Merge pull request #2593 from mgoelzer/paych_get_parse_as_fil

Parse amount as FIL in paych get
2020-07-25 09:54:54 +02:00 · 2020-07-25 01:54:21 +00:00 · 2020-07-24 13:17:41 -07:00 · 2020-07-24 13:09:19 -07:00 · 2020-07-24 12:41:23 -07:00 · 2020-07-24 12:33:04 -07:00
480 changed files with 36593 additions and 31876 deletions
@@ -1,11 +1,11 @@
 version: 2.1
 orbs:
-  go: gotest/tools@0.0.9
+  go: gotest/tools@0.0.13

 executors:
  golang:
    docker:
-      - image: circleci/golang:1.13
+      - image: circleci/golang:1.14.2
    resource_class: 2xlarge
  ubuntu:
    docker:
@@ -42,13 +42,13 @@ commands:
      - restore_cache:
          name: Restore parameters cache
          keys:
-            - 'v20-1k-lotus-params'
+            - 'v25-2k-lotus-params'
          paths:
            - /var/tmp/filecoin-proof-parameters/
-      - run:  ./lotus fetch-params --proving-params 1024
+      - run:  ./lotus fetch-params 2048
      - save_cache:
          name: Save parameters cache
-          key: 'v20-1k-lotus-params'
+          key: 'v25-2k-lotus-params'
          paths:
            - /var/tmp/filecoin-proof-parameters/
  install_ipfs:
@@ -79,7 +79,6 @@ jobs:
    steps:
      - install-deps
      - prepare
-      - go/mod-download
      - go/mod-tidy-check

  build-all:
@@ -87,12 +86,8 @@ jobs:
    steps:
      - install-deps
      - prepare
-      - go/mod-download
      - run: sudo apt-get update
      - run: sudo apt-get install npm
-      - restore_cache:
-          name: restore go mod cache
-          key: v1-go-deps-{{ arch }}-{{ checksum "/home/circleci/project/go.mod" }}
      - run:
          command: make buildall
      - store_artifacts:
@@ -107,6 +102,14 @@ jobs:
          paths:
            - linux

+  build-debug:
+    executor: golang
+    steps:
+      - install-deps
+      - prepare
+      - run:
+          command: make debug
+
  test: &test
    description: |
      Run tests with gotestsum.
@@ -122,6 +125,9 @@ jobs:
        type: string
        default: "./..."
        description: Import paths of packages to be tested.
+      winpost-test:
+        type: string
+        default: "0"
      test-suite-name:
        type: string
        default: unit
@@ -144,10 +150,6 @@ jobs:
    steps:
      - install-deps
      - prepare
-      - go/mod-download
-      - restore_cache:
-          name: restore go mod cache
-          key: v1-go-deps-{{ arch }}-{{ checksum "/home/circleci/project/go.mod" }}
      - run:
          command: make deps lotus
          no_output_timeout: 30m
@@ -159,6 +161,7 @@ jobs:
          environment:
            GOTESTSUM_JUNITFILE: /tmp/test-reports/<< parameters.test-suite-name >>/junit.xml
            GOTESTSUM_FORMAT: << parameters.gotestsum-format >>
+            LOTUS_TEST_WINDOW_POST: << parameters.winpost-test >>
          command: |
            mkdir -p /tmp/test-reports/<< parameters.test-suite-name >>
            gotestsum -- \
@@ -177,16 +180,11 @@ jobs:
                shell: /bin/bash -eo pipefail
                command: |
                  bash <(curl -s https://codecov.io/bash)
-      - save_cache:
-          name: save go mod cache
-          key: v1-go-deps-{{ arch }}-{{ checksum "/home/circleci/project/go.mod" }}
-          paths:
-            - "~/go/pkg"
-            - "~/go/src/github.com"
-            - "~/go/src/golang.org"

  test-short:
    <<: *test
+  test-window-post:
+    <<: *test

  build-macos:
    description: build darwin lotus binary
@@ -200,8 +198,8 @@ jobs:
      - run:
          name: Install go
          command: |
-            curl -O https://dl.google.com/go/go1.13.4.darwin-amd64.pkg && \
-            sudo installer -pkg go1.13.4.darwin-amd64.pkg -target /
+            curl -O https://dl.google.com/go/go1.14.2.darwin-amd64.pkg && \
+            sudo installer -pkg go1.14.2.darwin-amd64.pkg -target /
      - run:
          name: Install pkg-config
          command: HOMEBREW_NO_AUTO_UPDATE=1 brew install pkg-config
@@ -213,14 +211,12 @@ jobs:
      - run:
          name: Install jq
          command: |
-            mkdir $HOME/.bin
-            curl --location https://github.com/stedolan/jq/releases/download/jq-1.6/jq-osx-amd64 --output $HOME/.bin/jq
-            chmod +x $HOME/.bin/jq
+            curl --location https://github.com/stedolan/jq/releases/download/jq-1.6/jq-osx-amd64 --output /usr/local/bin/jq
+            chmod +x /usr/local/bin/jq
      - restore_cache:
-          name: restore go mod and cargo cache
+          name: restore cargo cache
          key: v3-go-deps-{{ arch }}-{{ checksum "~/go/src/github.com/filecoin-project/lotus/go.sum" }}
      - install-deps
-      - go/mod-download
      - run:
          command: make build
          no_output_timeout: 30m
@@ -242,6 +238,14 @@ jobs:
            - "~/.rustup"
            - "~/.cargo"

+  gofmt:
+    executor: golang
+    steps:
+      - install-deps
+      - prepare
+      - run:
+          command: "! go fmt ./... 2>&1 | read"
+
  lint: &lint
    description: |
      Run golangci-lint.
@@ -251,7 +255,7 @@ jobs:
        default: golang
      golangci-lint-version:
        type: string
-        default: 1.17.1
+        default: 1.27.0
      concurrency:
        type: string
        default: '2'
@@ -267,7 +271,6 @@ jobs:
    steps:
      - install-deps
      - prepare
-      - go/mod-download
      - run:
          command: make deps
          no_output_timeout: 30m
@@ -277,7 +280,7 @@ jobs:
      - run:
          name: Lint
          command: |
-            $HOME/.local/bin/golangci-lint run -v \
+            $HOME/.local/bin/golangci-lint run -v --timeout 2m \
              --concurrency << parameters.concurrency >> << parameters.args >>
  lint-changes:
    <<: *lint
@@ -312,15 +315,20 @@ workflows:
    jobs:
      - lint-changes:
          args: "--new-from-rev origin/master"
+      - mod-tidy-check
+      - gofmt
      - test:
          codecov-upload: true
-      - mod-tidy-check
+      - test-window-post:
+          go-test-flags: "-run=TestWindowedPost"
+          winpost-test: "1"
      - test-short:
          go-test-flags: "--timeout 10m --short"
          filters:
            tags:
              only:
                - /^v\d+\.\d+\.\d+$/
+      - build-debug
      - build-all:
          requires:
            - test-short
@@ -21,7 +21,7 @@ A clear and concise description of what you expected to happen.
 **Screenshots**
 If applicable, add screenshots to help explain your problem.

-**Version (run `lotus --version`):**
+**Version (run `lotus version`):**

 **Additional context**
 Add any other context about the problem here.
@@ -0,0 +1,34 @@
+---
+name: Sealing Issues
+about: Create a report for help with sealing (commit) failures.
+title: ''
+labels: 'sealing'
+assignees: ''
+
+---
+
+Please provide all the information requested here to help us troubleshoot "commit failed" issues.
+If the information requested is missing, we will probably have to just ask you to provide it anyway,
+before we can help debug.
+
+**Describe the problem**
+
+A brief description of the problem you encountered while proving (sealing) a sector.
+
+Including what commands you ran, and a description of your setup, is very helpful.
+
+**Sectors list**
+
+The output of `./lotus-storage-miner sectors list`.
+
+**Sectors status**
+
+The output of `./lotus-storage-miner sectors status --log <sectorId>` for the failed sector(s).
+
+**Lotus storage miner logs**
+
+Please go through the logs of your storage miner, and include screenshots of any error-like messages you find.
+
+**Version**
+
+The output of `./lotus --version`.
@@ -15,7 +15,6 @@
 /cmd/lotus-townhall/townhall/node_modules
 /cmd/lotus-townhall/townhall/build
 extern/filecoin-ffi/rust/target
-**/*.h
 **/*.a
 **/*.pc
 /**/*/.DS_STORE
@@ -36,3 +35,4 @@ build/paramfetch.sh
 bin/ipget
 bin/tmp/*
 .idea
+scratchpad
@@ -2,3 +2,6 @@
 	path = extern/filecoin-ffi
 	url = https://github.com/filecoin-project/filecoin-ffi.git
 	branch = master
+[submodule "extern/serialization-vectors"]
+	path = extern/serialization-vectors
+	url = https://github.com/filecoin-project/serialization-vectors
@@ -22,13 +22,27 @@ issues:
    - "func name will be used as test\\.Test.* by other packages, and that stutters; consider calling this"
    - "Potential file inclusion via variable"
    - "should have( a package)? comment"
+    - "Error return value of `logging.SetLogLevel` is not checked"

  exclude-use-default: false
  exclude-rules:
+    - path: lotuspond
+      linters:
+        - errcheck
+
    - path: node/modules/lp2p
      linters:
        - golint
-    - path: ".*_test.go"
+
+    - path: build/params_.*\.go
+      linters:
+        - golint
+          
+    - path: api/apistruct/struct.go
+      linters:
+        - golint
+
+    - path: .*_test.go
      linters:
        - gosec

@@ -3,8 +3,10 @@ SHELL=/usr/bin/env bash
 all: build
 .PHONY: all

+unexport GOFLAGS
+
 GOVERSION:=$(shell go version | cut -d' ' -f 3 | cut -d. -f 2)
-ifeq ($(shell expr $(GOVERSION) \< 13), 1)
+ifeq ($(shell expr $(GOVERSION) \< 14), 1)
 $(warning Your Golang version is go 1.$(GOVERSION))
 $(error Update Golang to version $(shell grep '^go' go.mod))
 endif
@@ -14,12 +16,19 @@ MODULES:=

 CLEAN:=
 BINS:=
-GOFLAGS+=-ldflags=-X="github.com/filecoin-project/lotus/build".CurrentCommit="+git$(subst -,.,$(shell git describe --always --match=NeVeRmAtCh --dirty 2>/dev/null || git rev-parse --short HEAD 2>/dev/null))"
+
+ldflags=-X=github.com/filecoin-project/lotus/build.CurrentCommit=+git.$(subst -,.,$(shell git describe --always --match=NeVeRmAtCh --dirty 2>/dev/null || git rev-parse --short HEAD 2>/dev/null))
+ifneq ($(strip $(LDFLAGS)),)
+	ldflags+=-extldflags=$(LDFLAGS)
+endif
+
+GOFLAGS+=-ldflags="$(ldflags)"
+

 ## FFI

 FFI_PATH:=extern/filecoin-ffi/
-FFI_DEPS:=libfilecoin.a filecoin.pc filecoin.h
+FFI_DEPS:=.install-filcrypto
 FFI_DEPS:=$(addprefix $(FFI_PATH),$(FFI_DEPS))

 $(FFI_DEPS): build/.filecoin-install ;
@@ -51,6 +60,9 @@ deps: $(BUILD_DEPS)
 debug: GOFLAGS+=-tags=debug
 debug: lotus lotus-storage-miner lotus-seal-worker lotus-seed

+2k: GOFLAGS+=-tags=2k
+2k: lotus lotus-storage-miner lotus-seal-worker lotus-seed
+
 lotus: $(BUILD_DEPS)
 	rm -f lotus
 	go build $(GOFLAGS) -o lotus ./cmd/lotus
@@ -91,6 +103,21 @@ install:
 	install -C ./lotus-storage-miner /usr/local/bin/lotus-storage-miner
 	install -C ./lotus-seal-worker /usr/local/bin/lotus-seal-worker

+install-services: install
+	mkdir -p /usr/local/lib/systemd/system
+	mkdir -p /var/log/lotus
+	install -C -m 0644 ./scripts/lotus-daemon.service /usr/local/lib/systemd/system/lotus-daemon.service
+	install -C -m 0644 ./scripts/lotus-miner.service /usr/local/lib/systemd/system/lotus-miner.service
+	systemctl daemon-reload
+	@echo
+	@echo "lotus-daemon and lotus-miner services installed. Don't forget to 'systemctl enable lotus-daemon|lotus-miner' for it to be enabled on startup."
+
+clean-services:
+	rm -f /usr/local/lib/systemd/system/lotus-daemon.service
+	rm -f /usr/local/lib/systemd/system/lotus-miner.service
+	rm -f /usr/local/lib/systemd/system/chainwatch.service
+	systemctl daemon-reload
+
 # TOOLS

 lotus-seed: $(BUILD_DEPS)
@@ -107,7 +134,7 @@ benchmarks:
 	@curl -X POST 'http://benchmark.kittyhawk.wtf/benchmark' -d '@bench.json' -u "${benchmark_http_cred}"
 .PHONY: benchmarks

-pond: build
+pond: 2k
 	go build -o pond ./lotuspond
 	(cd lotuspond/front && npm i && CI=false npm run build)
 .PHONY: pond
@@ -131,10 +158,16 @@ BINS+=fountain
 chainwatch:
 	rm -f chainwatch
 	go build -o chainwatch ./cmd/lotus-chainwatch
-	go run github.com/GeertJohan/go.rice/rice append --exec chainwatch -i ./cmd/lotus-chainwatch -i ./build
 .PHONY: chainwatch
 BINS+=chainwatch

+install-chainwatch-service: chainwatch
+	install -C ./chainwatch /usr/local/bin/chainwatch
+	install -C -m 0644 ./scripts/chainwatch.service /usr/local/lib/systemd/system/chainwatch.service
+	systemctl daemon-reload
+	@echo
+	@echo "chainwatch installed. Don't forget to 'systemctl enable chainwatch' for it to be enabled on startup."
+
 bench:
 	rm -f bench
 	go build -o bench ./cmd/lotus-bench
@@ -157,10 +190,28 @@ health:
 .PHONY: health
 BINS+=health

+testground:
+	go build -tags testground -o /dev/null ./cmd/lotus
+
+.PHONY: testground
+BINS+=testground
+
 # MISC

 buildall: $(BINS)

+completions:
+	./scripts/make-completions.sh lotus
+	./scripts/make-completions.sh lotus-storage-miner
+.PHONY: completions
+
+install-completions:
+	mkdir -p /usr/share/bash-completion/completions /usr/local/share/zsh/site-functions/
+	install -C ./scripts/bash-completion/lotus /usr/share/bash-completion/completions/lotus
+	install -C ./scripts/bash-completion/lotus-storage-miner /usr/share/bash-completion/completions/lotus-storage-miner
+	install -C ./scripts/zsh-completion/lotus /usr/local/share/zsh/site-functions/_lotus
+	install -C ./scripts/zsh-completion/lotus-storage-miner /usr/local/share/zsh/site-functions/_lotus-storage-miner
+
 clean:
 	rm -rf $(CLEAN) $(BINS)
 	-$(MAKE) -C $(FFI_PATH) clean
@@ -174,5 +225,10 @@ dist-clean:
 type-gen:
 	go run ./gen/main.go

+method-gen:
+	(cd ./lotuspond/front/src/chain && go run ./methodgen.go)
+
+gen: type-gen method-gen
+
 print-%:
 	@echo $*=$($*)
@@ -4,14 +4,23 @@

 Lotus is an implementation of the Filecoin Distributed Storage Network. For more details about Filecoin, check out the [Filecoin Spec](https://github.com/filecoin-project/specs).

-## Development
-
-All work is tracked via issues. An attempt at keeping an up-to-date view on remaining work is in the [lotus testnet github project board](https://github.com/filecoin-project/lotus/projects/1).
-
 ## Building & Documentation

 For instructions on how to build lotus from source, please visit [https://docs.lotu.sh](https://docs.lotu.sh) or read the source [here](https://github.com/filecoin-project/lotus/tree/master/documentation).

+## Reporting a Vulnerability
+
+Please send an email to security@filecoin.org. See our [security policy](SECURITY.md) for more details.
+
+## Development
+
+All work is tracked via issues. An attempt at keeping an up-to-date view on remaining work is in the [lotus testnet github project board](https://github.com/filecoin-project/lotus/projects/1).
+
+The main branches under development at the moment are:
+* [`master`](https://github.com/filecoin-project/lotus): current testnet.
+* [`next`](https://github.com/filecoin-project/lotus/tree/next): working branch with chain-breaking changes.
+* [`ntwk-calibration`](https://github.com/filecoin-project/lotus/tree/ntwk-calibration): devnet running one of `next` commits.
+
 ## License

 Dual-licensed under [MIT](https://github.com/filecoin-project/lotus/blob/master/LICENSE-MIT) + [Apache 2.0](https://github.com/filecoin-project/lotus/blob/master/LICENSE-APACHE)
@@ -0,0 +1,29 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+For *critical* bugs, please send an email to security@filecoin.org.
+
+The bug reporting process differs between bugs that are critical and may crash the network, and others that are unlikely to cause problems if malicious parties know about it. For non-critical bugs, please simply file a GitHub [issue](https://github.com/filecoin-project/lotus/issues/new?template=bug_report.md). 
+
+Please try to provide a clear description of any bugs reported, along with how to reproduce the bug if possible. More detailed bug reports (especially those with a PoC included) will help us move forward much faster. Additionally, please avoid reporting bugs that already have open issues. Take a moment to search the issue list of the related GitHub repositories before writing up a new report.
+
+Here are some examples of bugs we would consider 'critical':
+
+* If you can spend from a `multisig` wallet you do not control the keys for.
+* If you can cause a miner to be slashed without them actually misbehaving.
+* If you can maintain power without submitting windowed posts regularly.
+* If you can craft a message that causes lotus nodes to panic.
+* If you can cause your miner to win significantly more blocks than it should.
+* If you can craft a message that causes a persistent fork in the network.
+* If you can cause the total amount of Filecoin in the network to no longer be 2 billion.
+
+This is not an exhaustive list, but should provide some idea of what we consider 'critical'.
+
+## Supported Versions
+
+* TODO: This should be defined and set up by Mainnet launch.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| Testnet | :white_check_mark: |
@@ -4,19 +4,22 @@ import (
 	"context"
 	"fmt"

-	"github.com/filecoin-project/lotus/build"
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
+
+	"github.com/filecoin-project/go-jsonrpc/auth"
+
+	"github.com/filecoin-project/lotus/build"
 )

-type Permission = string
-
 type Common interface {
-	// Auth
-	AuthVerify(ctx context.Context, token string) ([]Permission, error)
-	AuthNew(ctx context.Context, perms []Permission) ([]byte, error)

-	// network
+	// MethodGroup: Auth
+
+	AuthVerify(ctx context.Context, token string) ([]auth.Permission, error)
+	AuthNew(ctx context.Context, perms []auth.Permission) ([]byte, error)
+
+	// MethodGroup: Net

 	NetConnectedness(context.Context, peer.ID) (network.Connectedness, error)
 	NetPeers(context.Context) ([]peer.AddrInfo, error)
@@ -24,6 +27,9 @@ type Common interface {
 	NetAddrsListen(context.Context) (peer.AddrInfo, error)
 	NetDisconnect(context.Context, peer.ID) error
 	NetFindPeer(context.Context, peer.ID) (peer.AddrInfo, error)
+	NetPubsubScores(context.Context) ([]PubsubScore, error)
+
+	// MethodGroup: Common

 	// ID returns peerID of libp2p node backing this API
 	ID(context.Context) (peer.ID, error)
@@ -33,6 +39,11 @@ type Common interface {

 	LogList(context.Context) ([]string, error)
 	LogSetLevel(context.Context, string, string) error
+
+	// trigger graceful shutdown
+	Shutdown(context.Context) error
+
+	Closing(context.Context) (<-chan struct{}, error)
 }

 // Version provides various build-time information
@@ -4,89 +4,212 @@ import (
 	"context"
 	"time"

-	"github.com/filecoin-project/go-address"
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-filestore"
 	"github.com/libp2p/go-libp2p-core/peer"

-	"github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/store"
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-fil-markets/storagemarket"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin/market"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/builtin/paych"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+
 	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
 )

 // FullNode API is a low-level interface to the Filecoin network full node
 type FullNode interface {
 	Common

-	// chain
+	// MethodGroup: Chain
+	// The Chain method group contains methods for interacting with the
+	// blockchain, but that do not require any form of state computation.

-	// ChainNotify returns channel with chain head updates
-	// First message is guaranteed to be of len == 1, and type == 'current'
-	ChainNotify(context.Context) (<-chan []*store.HeadChange, error)
+	// ChainNotify returns channel with chain head updates.
+	// First message is guaranteed to be of len == 1, and type == 'current'.
+	ChainNotify(context.Context) (<-chan []*HeadChange, error)
+
+	// ChainHead returns the current head of the chain.
 	ChainHead(context.Context) (*types.TipSet, error)
-	ChainGetRandomness(context.Context, types.TipSetKey, int64) ([]byte, error)
+
+	// ChainGetRandomness is used to sample the chain for randomness.
+	ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error)
+
+	// ChainGetBlock returns the block specified by the given CID.
 	ChainGetBlock(context.Context, cid.Cid) (*types.BlockHeader, error)
+	// ChainGetTipSet returns the tipset specified by the given TipSetKey.
 	ChainGetTipSet(context.Context, types.TipSetKey) (*types.TipSet, error)
-	ChainGetBlockMessages(context.Context, cid.Cid) (*BlockMessages, error)
-	ChainGetParentReceipts(context.Context, cid.Cid) ([]*types.MessageReceipt, error)
-	ChainGetParentMessages(context.Context, cid.Cid) ([]Message, error)
-	ChainGetTipSetByHeight(context.Context, uint64, types.TipSetKey) (*types.TipSet, error)
+
+	// ChainGetBlockMessages returns messages stored in the specified block.
+	ChainGetBlockMessages(ctx context.Context, blockCid cid.Cid) (*BlockMessages, error)
+
+	// ChainGetParentReceipts returns receipts for messages in parent tipset of
+	// the specified block.
+	ChainGetParentReceipts(ctx context.Context, blockCid cid.Cid) ([]*types.MessageReceipt, error)
+
+	// ChainGetParentMessages returns messages stored in parent tipset of the
+	// specified block.
+	ChainGetParentMessages(ctx context.Context, blockCid cid.Cid) ([]Message, error)
+
+	// ChainGetTipSetByHeight looks back for a tipset at the specified epoch.
+	// If there are no blocks at the specified epoch, a tipset at an earlier epoch
+	// will be returned.
+	ChainGetTipSetByHeight(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error)
+
+	// ChainReadObj reads ipld nodes referenced by the specified CID from chain
+	// blockstore and returns raw bytes.
 	ChainReadObj(context.Context, cid.Cid) ([]byte, error)
+
+	// ChainHasObj checks if a given CID exists in the chain blockstore.
 	ChainHasObj(context.Context, cid.Cid) (bool, error)
+	ChainStatObj(context.Context, cid.Cid, cid.Cid) (ObjStat, error)
+
+	// ChainSetHead forcefully sets current chain head. Use with caution.
 	ChainSetHead(context.Context, types.TipSetKey) error
+
+	// ChainGetGenesis returns the genesis tipset.
 	ChainGetGenesis(context.Context) (*types.TipSet, error)
+
+	// ChainTipSetWeight computes weight for the specified tipset.
 	ChainTipSetWeight(context.Context, types.TipSetKey) (types.BigInt, error)
-	ChainGetNode(ctx context.Context, p string) (interface{}, error)
+	ChainGetNode(ctx context.Context, p string) (*IpldObject, error)
+
+	// ChainGetMessage reads a message referenced by the specified CID from the
+	// chain blockstore.
 	ChainGetMessage(context.Context, cid.Cid) (*types.Message, error)
-	ChainGetPath(ctx context.Context, from types.TipSetKey, to types.TipSetKey) ([]*store.HeadChange, error)
+
+	// ChainGetPath returns a set of revert/apply operations needed to get from
+	// one tipset to another, for example:
+	//```
+	//        to
+	//         ^
+	// from   tAA
+	//   ^     ^
+	// tBA    tAB
+	//  ^---*--^
+	//      ^
+	//     tRR
+	//```
+	// Would return `[revert(tBA), apply(tAB), apply(tAA)]`
+	ChainGetPath(ctx context.Context, from types.TipSetKey, to types.TipSetKey) ([]*HeadChange, error)
+
+	// ChainExport returns a stream of bytes with CAR dump of chain data.
 	ChainExport(context.Context, types.TipSetKey) (<-chan []byte, error)

-	// syncer
+	// MethodGroup: Sync
+	// The Sync method group contains methods for interacting with and
+	// observing the lotus sync service.
+
+	// SyncState returns the current status of the lotus sync system.
 	SyncState(context.Context) (*SyncState, error)
+
+	// SyncSubmitBlock can be used to submit a newly created block to the.
+	// network through this node
 	SyncSubmitBlock(ctx context.Context, blk *types.BlockMsg) error
+
+	// SyncIncomingBlocks returns a channel streaming incoming, potentially not
+	// yet synced block headers.
 	SyncIncomingBlocks(ctx context.Context) (<-chan *types.BlockHeader, error)
+
+	// SyncMarkBad marks a blocks as bad, meaning that it won't ever by synced.
+	// Use with extreme caution.
 	SyncMarkBad(ctx context.Context, bcid cid.Cid) error
+
+	// SyncCheckBad checks if a block was marked as bad, and if it was, returns
+	// the reason.
 	SyncCheckBad(ctx context.Context, bcid cid.Cid) (string, error)

-	// messages
+	// MethodGroup: Mpool
+	// The Mpool methods are for interacting with the message pool. The message pool
+	// manages all incoming and outgoing 'messages' going over the network.
+
+	// MpoolPending returns pending mempool messages.
 	MpoolPending(context.Context, types.TipSetKey) ([]*types.SignedMessage, error)
+
+	// MpoolPush pushes a signed message to mempool.
 	MpoolPush(context.Context, *types.SignedMessage) (cid.Cid, error)
-	MpoolPushMessage(context.Context, *types.Message) (*types.SignedMessage, error) // get nonce, sign, push
+
+	// MpoolPushMessage atomically assigns a nonce, signs, and pushes a message
+	// to mempool.
+	MpoolPushMessage(context.Context, *types.Message) (*types.SignedMessage, error)
+
+	// MpoolGetNonce gets next nonce for the specified sender.
+	// Note that this method may not be atomic. Use MpoolPushMessage instead.
 	MpoolGetNonce(context.Context, address.Address) (uint64, error)
 	MpoolSub(context.Context) (<-chan MpoolUpdate, error)

-	// FullNodeStruct
+	// MpoolEstimateGasPrice estimates what gas price should be used for a
+	// message to have high likelihood of inclusion in `nblocksincl` epochs.
+	MpoolEstimateGasPrice(ctx context.Context, nblocksincl uint64, sender address.Address, gaslimit int64, tsk types.TipSetKey) (types.BigInt, error)

-	// miner
+	// MethodGroup: Miner

-	MinerCreateBlock(context.Context, address.Address, types.TipSetKey, *types.Ticket, *types.EPostProof, []*types.SignedMessage, uint64, uint64) (*types.BlockMsg, error)
+	MinerGetBaseInfo(context.Context, address.Address, abi.ChainEpoch, types.TipSetKey) (*MiningBaseInfo, error)
+	MinerCreateBlock(context.Context, *BlockTemplate) (*types.BlockMsg, error)

 	// // UX ?

-	// wallet
+	// MethodGroup: Wallet

-	WalletNew(context.Context, string) (address.Address, error)
+	// WalletNew creates a new address in the wallet with the given sigType.
+	WalletNew(context.Context, crypto.SigType) (address.Address, error)
+	// WalletHas indicates whether the given address is in the wallet.
 	WalletHas(context.Context, address.Address) (bool, error)
+	// WalletList lists all the addresses in the wallet.
 	WalletList(context.Context) ([]address.Address, error)
+	// WalletBalance returns the balance of the given address at the current head of the chain.
 	WalletBalance(context.Context, address.Address) (types.BigInt, error)
-	WalletSign(context.Context, address.Address, []byte) (*types.Signature, error)
+	// WalletSign signs the given bytes using the given address.
+	WalletSign(context.Context, address.Address, []byte) (*crypto.Signature, error)
+	// WalletSignMessage signs the given message using the given address.
 	WalletSignMessage(context.Context, address.Address, *types.Message) (*types.SignedMessage, error)
+	// WalletVerify takes an address, a signature, and some bytes, and indicates whether the signature is valid.
+	// The address does not have to be in the wallet.
+	WalletVerify(context.Context, address.Address, []byte, *crypto.Signature) bool
+	// WalletDefaultAddress returns the address marked as default in the wallet.
 	WalletDefaultAddress(context.Context) (address.Address, error)
+	// WalletSetDefault marks the given address as as the default one.
 	WalletSetDefault(context.Context, address.Address) error
+	// WalletExport returns the private key of an address in the wallet.
 	WalletExport(context.Context, address.Address) (*types.KeyInfo, error)
+	// WalletImport receives a KeyInfo, which includes a private key, and imports it into the wallet.
 	WalletImport(context.Context, *types.KeyInfo) (address.Address, error)
+	// WalletDelete deletes an address from the wallet.
+	WalletDelete(context.Context, address.Address) error

 	// Other

-	// ClientImport imports file under the specified path into filestore
-	ClientImport(ctx context.Context, path string) (cid.Cid, error)
-	ClientStartDeal(ctx context.Context, data cid.Cid, addr address.Address, miner address.Address, epochPrice types.BigInt, blocksDuration uint64) (*cid.Cid, error)
+	// MethodGroup: Client
+	// The Client methods all have to do with interacting with the storage and
+	// retrieval markets as a client
+
+	// ClientImport imports file under the specified path into filestore.
+	ClientImport(ctx context.Context, ref FileRef) (cid.Cid, error)
+	// ClientStartDeal proposes a deal with a miner.
+	ClientStartDeal(ctx context.Context, params *StartDealParams) (*cid.Cid, error)
+	// ClientGetDealInfo returns the latest information about a given deal.
 	ClientGetDealInfo(context.Context, cid.Cid) (*DealInfo, error)
+	// ClientListDeals returns information about the deals made by the local client.
 	ClientListDeals(ctx context.Context) ([]DealInfo, error)
+	// ClientHasLocal indicates whether a certain CID is locally stored.
 	ClientHasLocal(ctx context.Context, root cid.Cid) (bool, error)
+	// ClientFindData identifies peers that have a certain file, and returns QueryOffers (one per peer).
 	ClientFindData(ctx context.Context, root cid.Cid) ([]QueryOffer, error)
-	ClientRetrieve(ctx context.Context, order RetrievalOrder, path string) error
-	ClientQueryAsk(ctx context.Context, p peer.ID, miner address.Address) (*types.SignedStorageAsk, error)
+	// ClientMinerQueryOffer returns a QueryOffer for the specific miner and file.
+	ClientMinerQueryOffer(ctx context.Context, root cid.Cid, miner address.Address) (QueryOffer, error)
+	// ClientRetrieve initiates the retrieval of a file, as specified in the order.
+	ClientRetrieve(ctx context.Context, order RetrievalOrder, ref *FileRef) error
+	// ClientQueryAsk returns a signed StorageAsk from the specified miner.
+	ClientQueryAsk(ctx context.Context, p peer.ID, miner address.Address) (*storagemarket.SignedStorageAsk, error)
+	// ClientCalcCommP calculates the CommP for a specified file, based on the sector size of the provided miner.
+	ClientCalcCommP(ctx context.Context, inpath string, miner address.Address) (*CommPRet, error)
+	// ClientGenCar generates a CAR file for the specified file.
+	ClientGenCar(ctx context.Context, ref FileRef, outpath string) error

 	// ClientUnimport removes references to the specified file from filestore
 	//ClientUnimport(path string)
@@ -96,57 +219,149 @@ type FullNode interface {

 	//ClientListAsks() []Ask

-	// if tipset is nil, we'll use heaviest
-	StateCall(context.Context, *types.Message, types.TipSetKey) (*MethodCall, error)
-	StateReplay(context.Context, types.TipSetKey, cid.Cid) (*ReplayResults, error)
+	// MethodGroup: State
+	// The State methods are used to query, inspect, and interact with chain state.
+	// All methods take a TipSetKey as a parameter. The state looked up is the state at that tipset.
+	// A nil TipSetKey can be provided as a param, this will cause the heaviest tipset in the chain to be used.
+
+	// StateCall runs the given message and returns its result without any persisted changes.
+	StateCall(context.Context, *types.Message, types.TipSetKey) (*InvocResult, error)
+	// StateReplay returns the result of executing the indicated message, assuming it was executed in the indicated tipset.
+	StateReplay(context.Context, types.TipSetKey, cid.Cid) (*InvocResult, error)
+	// StateGetActor returns the indicated actor's nonce and balance.
 	StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error)
-	StateReadState(ctx context.Context, act *types.Actor, tsk types.TipSetKey) (*ActorState, error)
-	StateListMessages(ctx context.Context, match *types.Message, tsk types.TipSetKey, toht uint64) ([]cid.Cid, error)
+	// StateReadState returns the indicated actor's state.
+	StateReadState(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*ActorState, error)
+	// StateListMessages looks back and returns all messages with a matching to or from address, stopping at the given height.
+	StateListMessages(ctx context.Context, match *types.Message, tsk types.TipSetKey, toht abi.ChainEpoch) ([]cid.Cid, error)

-	StateMinerSectors(context.Context, address.Address, types.TipSetKey) ([]*ChainSectorInfo, error)
+	// StateNetworkName returns the name of the network the node is synced to
+	StateNetworkName(context.Context) (dtypes.NetworkName, error)
+	// StateMinerSectors returns info about the given miner's sectors. If the filter bitfield is nil, all sectors are included.
+	// If the filterOut boolean is set to true, any sectors in the filter are excluded.
+	// If false, only those sectors in the filter are included.
+	StateMinerSectors(context.Context, address.Address, *abi.BitField, bool, types.TipSetKey) ([]*ChainSectorInfo, error)
+	// StateMinerProvingSet returns info about those sectors that a given miner is actively proving.
 	StateMinerProvingSet(context.Context, address.Address, types.TipSetKey) ([]*ChainSectorInfo, error)
-	StateMinerPower(context.Context, address.Address, types.TipSetKey) (MinerPower, error)
-	StateMinerWorker(context.Context, address.Address, types.TipSetKey) (address.Address, error)
-	StateMinerPeerID(ctx context.Context, m address.Address, tsk types.TipSetKey) (peer.ID, error)
-	StateMinerElectionPeriodStart(ctx context.Context, actor address.Address, tsk types.TipSetKey) (uint64, error)
-	StateMinerSectorSize(context.Context, address.Address, types.TipSetKey) (uint64, error)
-	StateMinerFaults(context.Context, address.Address, types.TipSetKey) ([]uint64, error)
+	// StateMinerProvingDeadline calculates the deadline at some epoch for a proving period
+	// and returns the deadline-related calculations.
+	StateMinerProvingDeadline(context.Context, address.Address, types.TipSetKey) (*miner.DeadlineInfo, error)
+	// StateMinerPower returns the power of the indicated miner
+	StateMinerPower(context.Context, address.Address, types.TipSetKey) (*MinerPower, error)
+	// StateMinerInfo returns info about the indicated miner
+	StateMinerInfo(context.Context, address.Address, types.TipSetKey) (MinerInfo, error)
+	// StateMinerDeadlines returns all the proving deadlines for the given miner
+	StateMinerDeadlines(context.Context, address.Address, types.TipSetKey) (*miner.Deadlines, error)
+	// StateMinerFaults returns a bitfield indicating the faulty sectors of the given miner
+	StateMinerFaults(context.Context, address.Address, types.TipSetKey) (*abi.BitField, error)
+	// StateAllMinerFaults returns all non-expired Faults that occur within lookback epochs of the given tipset
+	StateAllMinerFaults(ctx context.Context, lookback abi.ChainEpoch, ts types.TipSetKey) ([]*Fault, error)
+	// StateMinerRecoveries returns a bitfield indicating the recovering sectors of the given miner
+	StateMinerRecoveries(context.Context, address.Address, types.TipSetKey) (*abi.BitField, error)
+	// StateMinerInitialPledgeCollateral returns the initial pledge collateral for the specified miner's sector
+	StateMinerInitialPledgeCollateral(context.Context, address.Address, abi.SectorNumber, types.TipSetKey) (types.BigInt, error)
+	// StateMinerAvailableBalance returns the portion of a miner's balance that can be withdrawn or spent
+	StateMinerAvailableBalance(context.Context, address.Address, types.TipSetKey) (types.BigInt, error)
+	// StateSectorPreCommitInfo returns the PreCommit info for the specified miner's sector
+	StateSectorPreCommitInfo(context.Context, address.Address, abi.SectorNumber, types.TipSetKey) (miner.SectorPreCommitOnChainInfo, error)
+	// StateSectorGetInfo returns the on-chain info for the specified miner's sector
+	StateSectorGetInfo(context.Context, address.Address, abi.SectorNumber, types.TipSetKey) (*miner.SectorOnChainInfo, error)
 	StatePledgeCollateral(context.Context, types.TipSetKey) (types.BigInt, error)
-	StateWaitMsg(context.Context, cid.Cid) (*MsgWait, error)
+	// StateSearchMsg searches for a message in the chain, and returns its receipt and the tipset where it was executed
+	StateSearchMsg(context.Context, cid.Cid) (*MsgLookup, error)
+	// StateWaitMsg looks back in the chain for a message. If not found, it blocks until the
+	// message arrives on chain, and gets to the indicated confidence depth.
+	StateWaitMsg(ctx context.Context, cid cid.Cid, confidence uint64) (*MsgLookup, error)
+	// StateListMiners returns the addresses of every miner that has claimed power in the Power Actor
 	StateListMiners(context.Context, types.TipSetKey) ([]address.Address, error)
+	// StateListActors returns the addresses of every actor in the state
 	StateListActors(context.Context, types.TipSetKey) ([]address.Address, error)
-	StateMarketBalance(context.Context, address.Address, types.TipSetKey) (actors.StorageParticipantBalance, error)
-	StateMarketParticipants(context.Context, types.TipSetKey) (map[string]actors.StorageParticipantBalance, error)
-	StateMarketDeals(context.Context, types.TipSetKey) (map[string]actors.OnChainDeal, error)
-	StateMarketStorageDeal(context.Context, uint64, types.TipSetKey) (*actors.OnChainDeal, error)
+	// StateMarketBalance looks up the Escrow and Locked balances of the given address in the Storage Market
+	StateMarketBalance(context.Context, address.Address, types.TipSetKey) (MarketBalance, error)
+	// StateMarketParticipants returns the Escrow and Locked balances of every participant in the Storage Market
+	StateMarketParticipants(context.Context, types.TipSetKey) (map[string]MarketBalance, error)
+	// StateMarketDeals returns information about every deal in the Storage Market
+	StateMarketDeals(context.Context, types.TipSetKey) (map[string]MarketDeal, error)
+	// StateMarketStorageDeal returns information about the indicated deal
+	StateMarketStorageDeal(context.Context, abi.DealID, types.TipSetKey) (*MarketDeal, error)
+	// StateLookupID retrieves the ID address of the given address
 	StateLookupID(context.Context, address.Address, types.TipSetKey) (address.Address, error)
+	// StateAccountKey returns the public key address of the given ID address
+	StateAccountKey(context.Context, address.Address, types.TipSetKey) (address.Address, error)
+	// StateChangedActors returns all the actors whose states change between the two given state CIDs
+	// TODO: Should this take tipset keys instead?
 	StateChangedActors(context.Context, cid.Cid, cid.Cid) (map[string]types.Actor, error)
+	// StateGetReceipt returns the message receipt for the given message
 	StateGetReceipt(context.Context, cid.Cid, types.TipSetKey) (*types.MessageReceipt, error)
+	// StateMinerSectorCount returns the number of sectors in a miner's sector set and proving set
 	StateMinerSectorCount(context.Context, address.Address, types.TipSetKey) (MinerSectors, error)
-	StateCompute(context.Context, uint64, []*types.Message, types.TipSetKey) (cid.Cid, error)
+	// StateCompute is a flexible command that applies the given messages on the given tipset.
+	// The messages are run as though the VM were at the provided height.
+	StateCompute(context.Context, abi.ChainEpoch, []*types.Message, types.TipSetKey) (*ComputeStateOutput, error)

+	// MethodGroup: Msig
+	// The Msig methods are used to interact with multisig wallets on the
+	// filecoin network
+
+	// MsigGetAvailableBalance returns the portion of a multisig's balance that can be withdrawn or spent
 	MsigGetAvailableBalance(context.Context, address.Address, types.TipSetKey) (types.BigInt, error)
+	// MsigCreate creates a multisig wallet
+	// It takes the following params: <required number of senders>, <approving addresses>, <unlock duration>
+	//<initial balance>, <sender address of the create msg>, <gas price>
+	MsigCreate(context.Context, int64, []address.Address, abi.ChainEpoch, types.BigInt, address.Address, types.BigInt) (cid.Cid, error)
+	// MsigPropose proposes a multisig message
+	// It takes the following params: <multisig address>, <recipient address>, <value to transfer>,
+	// <sender address of the propose msg>, <method to call in the proposed message>, <params to include in the proposed message>
+	MsigPropose(context.Context, address.Address, address.Address, types.BigInt, address.Address, uint64, []byte) (cid.Cid, error)
+	// MsigApprove approves a previously-proposed multisig message
+	// It takes the following params: <multisig address>, <proposed message ID>, <proposer address>, <recipient address>, <value to transfer>,
+	// <sender address of the approve msg>, <method to call in the proposed message>, <params to include in the proposed message>
+	MsigApprove(context.Context, address.Address, uint64, address.Address, address.Address, types.BigInt, address.Address, uint64, []byte) (cid.Cid, error)
+	// MsigCancel cancels a previously-proposed multisig message
+	// It takes the following params: <multisig address>, <proposed message ID>, <recipient address>, <value to transfer>,
+	// <sender address of the cancel msg>, <method to call in the proposed message>, <params to include in the proposed message>
+	MsigCancel(context.Context, address.Address, uint64, address.Address, types.BigInt, address.Address, uint64, []byte) (cid.Cid, error)
+	// MsigSwapPropose proposes swapping 2 signers in the multisig
+	// It takes the following params: <multisig address>, <sender address of the propose msg>,
+	// <old signer> <new signer>
+	MsigSwapPropose(context.Context, address.Address, address.Address, address.Address, address.Address) (cid.Cid, error)
+	// MsigSwapApprove approves a previously proposed SwapSigner
+	// It takes the following params: <multisig address>, <sender address of the approve msg>, <proposed message ID>,
+	// <proposer address>, <old signer> <new signer>
+	MsigSwapApprove(context.Context, address.Address, address.Address, uint64, address.Address, address.Address, address.Address) (cid.Cid, error)
+	// MsigSwapCancel cancels a previously proposed SwapSigner message
+	// It takes the following params: <multisig address>, <sender address of the cancel msg>, <proposed message ID>,
+	// <old signer> <new signer>
+	MsigSwapCancel(context.Context, address.Address, address.Address, uint64, address.Address, address.Address) (cid.Cid, error)

-	MarketEnsureAvailable(context.Context, address.Address, types.BigInt) error
+	MarketEnsureAvailable(context.Context, address.Address, address.Address, types.BigInt) (cid.Cid, error)
 	// MarketFreeBalance

+	// MethodGroup: Paych
+	// The Paych methods are for interacting with and managing payment channels
+
 	PaychGet(ctx context.Context, from, to address.Address, ensureFunds types.BigInt) (*ChannelInfo, error)
 	PaychList(context.Context) ([]address.Address, error)
 	PaychStatus(context.Context, address.Address) (*PaychStatus, error)
 	PaychClose(context.Context, address.Address) (cid.Cid, error)
 	PaychAllocateLane(ctx context.Context, ch address.Address) (uint64, error)
 	PaychNewPayment(ctx context.Context, from, to address.Address, vouchers []VoucherSpec) (*PaymentInfo, error)
-	PaychVoucherCheckValid(context.Context, address.Address, *types.SignedVoucher) error
-	PaychVoucherCheckSpendable(context.Context, address.Address, *types.SignedVoucher, []byte, []byte) (bool, error)
-	PaychVoucherCreate(context.Context, address.Address, types.BigInt, uint64) (*types.SignedVoucher, error)
-	PaychVoucherAdd(context.Context, address.Address, *types.SignedVoucher, []byte, types.BigInt) (types.BigInt, error)
-	PaychVoucherList(context.Context, address.Address) ([]*types.SignedVoucher, error)
-	PaychVoucherSubmit(context.Context, address.Address, *types.SignedVoucher) (cid.Cid, error)
+	PaychVoucherCheckValid(context.Context, address.Address, *paych.SignedVoucher) error
+	PaychVoucherCheckSpendable(context.Context, address.Address, *paych.SignedVoucher, []byte, []byte) (bool, error)
+	PaychVoucherCreate(context.Context, address.Address, types.BigInt, uint64) (*paych.SignedVoucher, error)
+	PaychVoucherAdd(context.Context, address.Address, *paych.SignedVoucher, []byte, types.BigInt) (types.BigInt, error)
+	PaychVoucherList(context.Context, address.Address) ([]*paych.SignedVoucher, error)
+	PaychVoucherSubmit(context.Context, address.Address, *paych.SignedVoucher) (cid.Cid, error)
+}
+
+type FileRef struct {
+	Path  string
+	IsCAR bool
 }

 type MinerSectors struct {
-	Pset uint64
 	Sset uint64
+	Pset uint64
 }

 type Import struct {
@@ -158,19 +373,24 @@ type Import struct {

 type DealInfo struct {
 	ProposalCid cid.Cid
-	State       DealState
+	State       storagemarket.StorageDealStatus
+	Message     string // more information about deal state, particularly errors
 	Provider    address.Address

-	PieceRef []byte // cid bytes
+	PieceCID cid.Cid
 	Size     uint64

 	PricePerEpoch types.BigInt
 	Duration      uint64
+
+	DealID abi.DealID
 }

-type MsgWait struct {
-	Receipt types.MessageReceipt
-	TipSet  *types.TipSet
+type MsgLookup struct {
+	Receipt   types.MessageReceipt
+	ReturnDec interface{}
+	TipSet    types.TipSetKey
+	Height    abi.ChainEpoch
 }

 type BlockMessages struct {
@@ -186,9 +406,8 @@ type Message struct {
 }

 type ChainSectorInfo struct {
-	SectorID uint64
-	CommD    []byte
-	CommR    []byte
+	Info miner.SectorOnChainInfo
+	ID   abi.SectorNumber
 }

 type ActorState struct {
@@ -217,20 +436,21 @@ type ChannelInfo struct {
 type PaymentInfo struct {
 	Channel        address.Address
 	ChannelMessage *cid.Cid
-	Vouchers       []*types.SignedVoucher
+	Vouchers       []*paych.SignedVoucher
 }

 type VoucherSpec struct {
-	Amount   types.BigInt
-	TimeLock uint64
-	MinClose uint64
+	Amount      types.BigInt
+	TimeLockMin abi.ChainEpoch
+	TimeLockMax abi.ChainEpoch
+	MinSettle   abi.ChainEpoch

-	Extra *types.ModVerifyParams
+	Extra *paych.ModVerifyParams
 }

 type MinerPower struct {
-	MinerPower types.BigInt
-	TotalPower types.BigInt
+	MinerPower power.Claim
+	TotalPower power.Claim
 }

 type QueryOffer struct {
@@ -238,42 +458,57 @@ type QueryOffer struct {

 	Root cid.Cid

-	Size     uint64
-	MinPrice types.BigInt
-
-	Miner       address.Address
-	MinerPeerID peer.ID
+	Size                    uint64
+	MinPrice                types.BigInt
+	PaymentInterval         uint64
+	PaymentIntervalIncrease uint64
+	Miner                   address.Address
+	MinerPeerID             peer.ID
 }

 func (o *QueryOffer) Order(client address.Address) RetrievalOrder {
 	return RetrievalOrder{
-		Root:  o.Root,
-		Size:  o.Size,
-		Total: o.MinPrice,
-
-		Client: client,
+		Root:                    o.Root,
+		Size:                    o.Size,
+		Total:                   o.MinPrice,
+		PaymentInterval:         o.PaymentInterval,
+		PaymentIntervalIncrease: o.PaymentIntervalIncrease,
+		Client:                  client,

 		Miner:       o.Miner,
 		MinerPeerID: o.MinerPeerID,
 	}
 }

+type MarketBalance struct {
+	Escrow big.Int
+	Locked big.Int
+}
+
+type MarketDeal struct {
+	Proposal market.DealProposal
+	State    market.DealState
+}
+
 type RetrievalOrder struct {
 	// TODO: make this less unixfs specific
 	Root cid.Cid
 	Size uint64
 	// TODO: support offset
-	Total types.BigInt
-
-	Client      address.Address
-	Miner       address.Address
-	MinerPeerID peer.ID
+	Total                   types.BigInt
+	PaymentInterval         uint64
+	PaymentIntervalIncrease uint64
+	Client                  address.Address
+	Miner                   address.Address
+	MinerPeerID             peer.ID
 }

-type ReplayResults struct {
-	Msg     *types.Message
-	Receipt *types.MessageReceipt
-	Error   string
+type InvocResult struct {
+	Msg            *types.Message
+	MsgRct         *types.MessageReceipt
+	ExecutionTrace types.ExecutionTrace
+	Error          string
+	Duration       time.Duration
 }

 type MethodCall struct {
@@ -281,12 +516,26 @@ type MethodCall struct {
 	Error string
 }

+type StartDealParams struct {
+	Data              *storagemarket.DataRef
+	Wallet            address.Address
+	Miner             address.Address
+	EpochPrice        types.BigInt
+	MinBlocksDuration uint64
+	DealStartEpoch    abi.ChainEpoch
+}
+
+type IpldObject struct {
+	Cid cid.Cid
+	Obj interface{}
+}
+
 type ActiveSync struct {
 	Base   *types.TipSet
 	Target *types.TipSet

 	Stage  SyncStateStage
-	Height uint64
+	Height abi.ChainEpoch

 	Start   time.Time
 	End     time.Time
@@ -319,3 +568,51 @@ type MpoolUpdate struct {
 	Type    MpoolChange
 	Message *types.SignedMessage
 }
+
+type ComputeStateOutput struct {
+	Root  cid.Cid
+	Trace []*InvocResult
+}
+
+type MiningBaseInfo struct {
+	MinerPower      types.BigInt
+	NetworkPower    types.BigInt
+	Sectors         []abi.SectorInfo
+	WorkerKey       address.Address
+	SectorSize      abi.SectorSize
+	PrevBeaconEntry types.BeaconEntry
+	BeaconEntries   []types.BeaconEntry
+}
+
+type BlockTemplate struct {
+	Miner            address.Address
+	Parents          types.TipSetKey
+	Ticket           *types.Ticket
+	Eproof           *types.ElectionProof
+	BeaconValues     []types.BeaconEntry
+	Messages         []*types.SignedMessage
+	Epoch            abi.ChainEpoch
+	Timestamp        uint64
+	WinningPoStProof []abi.PoStProof
+}
+
+type CommPRet struct {
+	Root cid.Cid
+	Size abi.UnpaddedPieceSize
+}
+type HeadChange struct {
+	Type string
+	Val  *types.TipSet
+}
+
+type MsigProposeResponse int
+
+const (
+	MsigApprove MsigProposeResponse = iota
+	MsigCancel
+)
+
+type Fault struct {
+	Miner address.Address
+	Epoch abi.ChainEpoch
+}
@@ -1,112 +1,80 @@
 package api

 import (
+	"bytes"
 	"context"

+	"github.com/ipfs/go-cid"
+
 	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/go-sectorbuilder"
+	"github.com/filecoin-project/go-fil-markets/storagemarket"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/sector-storage/stores"
+	"github.com/filecoin-project/sector-storage/storiface"
+	"github.com/filecoin-project/specs-actors/actors/abi"
 )

-// alias because cbor-gen doesn't like non-alias types
-type SectorState = uint64
-
-const (
-	UndefinedSectorState SectorState = iota
-
-	// happy path
-	Empty
-	Packing // sector not in sealStore, and not on chain
-
-	Unsealed      // sealing / queued
-	PreCommitting // on chain pre-commit
-	WaitSeed      // waiting for seed
-	Committing
-	CommitWait // waiting for message to land on chain
-	FinalizeSector
-	Proving
-	_ // reserved
-	_
-	_
-
-	// recovery handling
-	// Reseal
-	_
-	_
-	_
-	_
-	_
-	_
-	_
-
-	// error modes
-	FailedUnrecoverable
-
-	SealFailed
-	PreCommitFailed
-	SealCommitFailed
-	CommitFailed
-	PackingFailed
-	_
-	_
-	_
-
-	Faulty        // sector is corrupted or gone for some reason
-	FaultReported // sector has been declared as a fault on chain
-	FaultedFinal  // fault declared on chain
-)
-
-var SectorStates = []string{
-	UndefinedSectorState: "UndefinedSectorState",
-	Empty:                "Empty",
-	Packing:              "Packing",
-	Unsealed:             "Unsealed",
-	PreCommitting:        "PreCommitting",
-	WaitSeed:             "WaitSeed",
-	Committing:           "Committing",
-	CommitWait:           "CommitWait",
-	FinalizeSector:       "FinalizeSector",
-	Proving:              "Proving",
-
-	SealFailed:       "SealFailed",
-	PreCommitFailed:  "PreCommitFailed",
-	SealCommitFailed: "SealCommitFailed",
-	CommitFailed:     "CommitFailed",
-	PackingFailed:    "PackingFailed",
-
-	FailedUnrecoverable: "FailedUnrecoverable",
-
-	Faulty:        "Faulty",
-	FaultReported: "FaultReported",
-	FaultedFinal:  "FaultedFinal",
-}
-
 // StorageMiner is a low-level interface to the Filecoin network storage miner node
 type StorageMiner interface {
 	Common

 	ActorAddress(context.Context) (address.Address, error)

-	ActorSectorSize(context.Context, address.Address) (uint64, error)
+	ActorSectorSize(context.Context, address.Address) (abi.SectorSize, error)
+
+	MiningBase(context.Context) (*types.TipSet, error)

 	// Temp api for testing
 	PledgeSector(context.Context) error

 	// Get the status of a given sector by ID
-	SectorsStatus(context.Context, uint64) (SectorInfo, error)
+	SectorsStatus(context.Context, abi.SectorNumber) (SectorInfo, error)

 	// List all staged sectors
-	SectorsList(context.Context) ([]uint64, error)
+	SectorsList(context.Context) ([]abi.SectorNumber, error)

 	SectorsRefs(context.Context) (map[string][]SealedRef, error)

-	SectorsUpdate(context.Context, uint64, SectorState) error
+	SectorsUpdate(context.Context, abi.SectorNumber, SectorState) error
+	SectorRemove(context.Context, abi.SectorNumber) error

-	WorkerStats(context.Context) (sectorbuilder.WorkerStats, error)
+	StorageList(ctx context.Context) (map[stores.ID][]stores.Decl, error)
+	StorageLocal(ctx context.Context) (map[stores.ID]string, error)
+	StorageStat(ctx context.Context, id stores.ID) (stores.FsStat, error)

-	// WorkerQueue registers a remote worker
-	WorkerQueue(context.Context, sectorbuilder.WorkerCfg) (<-chan sectorbuilder.WorkerTask, error)
+	// WorkerConnect tells the node to connect to workers RPC
+	WorkerConnect(context.Context, string) error
+	WorkerStats(context.Context) (map[uint64]storiface.WorkerStats, error)

-	WorkerDone(ctx context.Context, task uint64, res sectorbuilder.SealRes) error
+	stores.SectorIndex
+
+	MarketImportDealData(ctx context.Context, propcid cid.Cid, path string) error
+	MarketListDeals(ctx context.Context) ([]storagemarket.StorageDeal, error)
+	MarketListIncompleteDeals(ctx context.Context) ([]storagemarket.MinerDeal, error)
+	MarketSetAsk(ctx context.Context, price types.BigInt, duration abi.ChainEpoch, minPieceSize abi.PaddedPieceSize, maxPieceSize abi.PaddedPieceSize) error
+	MarketGetAsk(ctx context.Context) (*storagemarket.SignedStorageAsk, error)
+
+	DealsImportData(ctx context.Context, dealPropCid cid.Cid, file string) error
+	DealsList(ctx context.Context) ([]storagemarket.StorageDeal, error)
+	DealsConsiderOnlineStorageDeals(context.Context) (bool, error)
+	DealsSetConsiderOnlineStorageDeals(context.Context, bool) error
+	DealsConsiderOnlineRetrievalDeals(context.Context) (bool, error)
+	DealsSetConsiderOnlineRetrievalDeals(context.Context, bool) error
+	DealsPieceCidBlocklist(context.Context) ([]cid.Cid, error)
+	DealsSetPieceCidBlocklist(context.Context, []cid.Cid) error
+	DealsConsiderOfflineStorageDeals(context.Context) (bool, error)
+	DealsSetConsiderOfflineStorageDeals(context.Context, bool) error
+	DealsConsiderOfflineRetrievalDeals(context.Context) (bool, error)
+	DealsSetConsiderOfflineRetrievalDeals(context.Context, bool) error
+
+	StorageAddLocal(ctx context.Context, path string) error
+}
+
+type SealRes struct {
+	Err   string
+	GoErr error `json:"-"`
+
+	Proof []byte
 }

 type SectorLog struct {
@@ -119,14 +87,14 @@ type SectorLog struct {
 }

 type SectorInfo struct {
-	SectorID uint64
+	SectorID abi.SectorNumber
 	State    SectorState
-	CommD    []byte
-	CommR    []byte
+	CommD    *cid.Cid
+	CommR    *cid.Cid
 	Proof    []byte
-	Deals    []uint64
-	Ticket   sectorbuilder.SealTicket
-	Seed     sectorbuilder.SealSeed
+	Deals    []abi.DealID
+	Ticket   SealTicket
+	Seed     SealSeed
 	Retries  uint64

 	LastErr string
@@ -135,11 +103,31 @@ type SectorInfo struct {
 }

 type SealedRef struct {
-	SectorID uint64
+	SectorID abi.SectorNumber
 	Offset   uint64
-	Size     uint64
+	Size     abi.UnpaddedPieceSize
 }

 type SealedRefs struct {
 	Refs []SealedRef
 }
+
+type SealTicket struct {
+	Value abi.SealRandomness
+	Epoch abi.ChainEpoch
+}
+
+type SealSeed struct {
+	Value abi.InteractiveSealRandomness
+	Epoch abi.ChainEpoch
+}
+
+func (st *SealTicket) Equals(ost *SealTicket) bool {
+	return bytes.Equal(st.Value, ost.Value) && st.Epoch == ost.Epoch
+}
+
+func (st *SealSeed) Equals(ost *SealSeed) bool {
+	return bytes.Equal(st.Value, ost.Value) && st.Epoch == ost.Epoch
+}
+
+type SectorState string
@@ -0,0 +1,34 @@
+package api
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+func goCmd() string {
+	var exeSuffix string
+	if runtime.GOOS == "windows" {
+		exeSuffix = ".exe"
+	}
+	path := filepath.Join(runtime.GOROOT(), "bin", "go"+exeSuffix)
+	if _, err := os.Stat(path); err == nil {
+		return path
+	}
+	return "go"
+}
+
+func TestDoesntDependOnFFI(t *testing.T) {
+	deps, err := exec.Command(goCmd(), "list", "-deps", "github.com/filecoin-project/lotus/api").Output()
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, pkg := range strings.Fields(string(deps)) {
+		if pkg == "github.com/filecoin-project/filecoin-ffi" {
+			t.Fatal("api depends on filecoin-ffi")
+		}
+	}
+}
@@ -0,0 +1,36 @@
+package api
+
+import (
+	"context"
+	"io"
+
+	"github.com/ipfs/go-cid"
+
+	"github.com/filecoin-project/sector-storage/sealtasks"
+	"github.com/filecoin-project/sector-storage/stores"
+	"github.com/filecoin-project/sector-storage/storiface"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-storage/storage"
+
+	"github.com/filecoin-project/lotus/build"
+)
+
+type WorkerAPI interface {
+	Version(context.Context) (build.Version, error)
+	// TODO: Info() (name, ...) ?
+
+	TaskTypes(context.Context) (map[sealtasks.TaskType]struct{}, error) // TaskType -> Weight
+	Paths(context.Context) ([]stores.StoragePath, error)
+	Info(context.Context) (storiface.WorkerInfo, error)
+
+	storage.Sealer
+
+	MoveStorage(ctx context.Context, sector abi.SectorID) error
+
+	UnsealPiece(context.Context, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) error
+	ReadPiece(context.Context, io.Writer, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize) error
+
+	Fetch(context.Context, abi.SectorID, stores.SectorFileType, stores.PathType, stores.AcquireMode) error
+
+	Closing(context.Context) (<-chan struct{}, error)
+}
@@ -18,6 +18,12 @@ type apiBStore struct {
 	api ChainIO
 }

+func NewAPIBlockstore(cio ChainIO) blockstore.Blockstore {
+	return &apiBStore{
+		api: cio,
+	}
+}
+
 func (a *apiBStore) DeleteBlock(cid.Cid) error {
 	return xerrors.New("not supported")
 }
@@ -1,105 +1,38 @@
 package apistruct

 import (
-	"context"
-	"reflect"
-
-	"golang.org/x/xerrors"
-
+	"github.com/filecoin-project/go-jsonrpc/auth"
 	"github.com/filecoin-project/lotus/api"
 )

-type permKey int
-
-var permCtxKey permKey
-
 const (
 	// When changing these, update docs/API.md too

-	PermRead  api.Permission = "read" // default
-	PermWrite api.Permission = "write"
-	PermSign  api.Permission = "sign"  // Use wallet keys for signing
-	PermAdmin api.Permission = "admin" // Manage permissions
+	PermRead  auth.Permission = "read" // default
+	PermWrite auth.Permission = "write"
+	PermSign  auth.Permission = "sign"  // Use wallet keys for signing
+	PermAdmin auth.Permission = "admin" // Manage permissions
 )

-var AllPermissions = []api.Permission{PermRead, PermWrite, PermSign, PermAdmin}
-var defaultPerms = []api.Permission{PermRead}
-
-func WithPerm(ctx context.Context, perms []api.Permission) context.Context {
-	return context.WithValue(ctx, permCtxKey, perms)
-}
+var AllPermissions = []auth.Permission{PermRead, PermWrite, PermSign, PermAdmin}
+var DefaultPerms = []auth.Permission{PermRead}

 func PermissionedStorMinerAPI(a api.StorageMiner) api.StorageMiner {
 	var out StorageMinerStruct
-	permissionedAny(a, &out.Internal)
-	permissionedAny(a, &out.CommonStruct.Internal)
+	auth.PermissionedProxy(AllPermissions, DefaultPerms, a, &out.Internal)
+	auth.PermissionedProxy(AllPermissions, DefaultPerms, a, &out.CommonStruct.Internal)
 	return &out
 }

 func PermissionedFullAPI(a api.FullNode) api.FullNode {
 	var out FullNodeStruct
-	permissionedAny(a, &out.Internal)
-	permissionedAny(a, &out.CommonStruct.Internal)
+	auth.PermissionedProxy(AllPermissions, DefaultPerms, a, &out.Internal)
+	auth.PermissionedProxy(AllPermissions, DefaultPerms, a, &out.CommonStruct.Internal)
 	return &out
 }

-func HasPerm(ctx context.Context, perm api.Permission) bool {
-	callerPerms, ok := ctx.Value(permCtxKey).([]api.Permission)
-	if !ok {
-		callerPerms = defaultPerms
-	}
-
-	for _, callerPerm := range callerPerms {
-		if callerPerm == perm {
-			return true
-		}
-	}
-	return false
-}
-
-func permissionedAny(in interface{}, out interface{}) {
-	rint := reflect.ValueOf(out).Elem()
-	ra := reflect.ValueOf(in)
-
-	for f := 0; f < rint.NumField(); f++ {
-		field := rint.Type().Field(f)
-		requiredPerm := api.Permission(field.Tag.Get("perm"))
-		if requiredPerm == "" {
-			panic("missing 'perm' tag on " + field.Name) // ok
-		}
-
-		// Validate perm tag
-		ok := false
-		for _, perm := range AllPermissions {
-			if requiredPerm == perm {
-				ok = true
-				break
-			}
-		}
-		if !ok {
-			panic("unknown 'perm' tag on " + field.Name) // ok
-		}
-
-		fn := ra.MethodByName(field.Name)
-
-		rint.Field(f).Set(reflect.MakeFunc(field.Type, func(args []reflect.Value) (results []reflect.Value) {
-			ctx := args[0].Interface().(context.Context)
-			if HasPerm(ctx, requiredPerm) {
-				return fn.Call(args)
-			}
-
-			err := xerrors.Errorf("missing permission to invoke '%s' (need '%s')", field.Name, requiredPerm)
-			rerr := reflect.ValueOf(&err).Elem()
-
-			if field.Type.NumOut() == 2 {
-				return []reflect.Value{
-					reflect.Zero(field.Type.Out(0)),
-					rerr,
-				}
-			} else {
-				return []reflect.Value{rerr}
-			}
-		}))
-
-	}
+func PermissionedWorkerAPI(a api.WorkerAPI) api.WorkerAPI {
+	var out WorkerStruct
+	auth.PermissionedProxy(AllPermissions, DefaultPerms, a, &out.Internal)
+	return &out
 }
@@ -0,0 +1,9 @@
+package apistruct
+
+import "testing"
+
+func TestPermTags(t *testing.T) {
+	_ = PermissionedFullAPI(&FullNodeStruct{})
+	_ = PermissionedStorMinerAPI(&StorageMinerStruct{})
+	_ = PermissionedWorkerAPI(&WorkerStruct{})
+}
@@ -1,16 +1,17 @@
+// Code generated by github.com/whyrusleeping/cbor-gen. DO NOT EDIT.
+
 package api

 import (
 	"fmt"
 	"io"

-	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin/paych"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	xerrors "golang.org/x/xerrors"
 )

-// Code generated by github.com/whyrusleeping/cbor-gen. DO NOT EDIT.
-
 var _ = xerrors.Errorf

 func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
@@ -22,15 +23,17 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 		return err
 	}

+	scratch := make([]byte, 9)
+
 	// t.Channel (address.Address) (struct)
 	if len("Channel") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"Channel\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("Channel")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Channel"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("Channel")); err != nil {
+	if _, err := io.WriteString(w, "Channel"); err != nil {
 		return err
 	}

@@ -43,10 +46,10 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Value in field \"ChannelMessage\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("ChannelMessage")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("ChannelMessage"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("ChannelMessage")); err != nil {
+	if _, err := io.WriteString(w, "ChannelMessage"); err != nil {
 		return err
 	}

@@ -55,20 +58,20 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 			return err
 		}
 	} else {
-		if err := cbg.WriteCid(w, *t.ChannelMessage); err != nil {
+		if err := cbg.WriteCidBuf(scratch, w, *t.ChannelMessage); err != nil {
 			return xerrors.Errorf("failed to write cid field t.ChannelMessage: %w", err)
 		}
 	}

-	// t.Vouchers ([]*types.SignedVoucher) (slice)
+	// t.Vouchers ([]*paych.SignedVoucher) (slice)
 	if len("Vouchers") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"Vouchers\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("Vouchers")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Vouchers"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("Vouchers")); err != nil {
+	if _, err := io.WriteString(w, "Vouchers"); err != nil {
 		return err
 	}

@@ -76,7 +79,7 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.Vouchers was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Vouchers)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Vouchers))); err != nil {
 		return err
 	}
 	for _, v := range t.Vouchers {
@@ -89,8 +92,9 @@ func (t *PaymentInfo) MarshalCBOR(w io.Writer) error {

 func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -108,7 +112,7 @@ func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) error {
 	for i := uint64(0); i < n; i++ {

 		{
-			sval, err := cbg.ReadString(br)
+			sval, err := cbg.ReadStringBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -123,7 +127,7 @@ func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) error {
 			{

 				if err := t.Channel.UnmarshalCBOR(br); err != nil {
-					return err
+					return xerrors.Errorf("unmarshaling t.Channel: %w", err)
 				}

 			}
@@ -152,10 +156,10 @@ func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) error {
 				}

 			}
-			// t.Vouchers ([]*types.SignedVoucher) (slice)
+			// t.Vouchers ([]*paych.SignedVoucher) (slice)
 		case "Vouchers":

-			maj, extra, err = cbg.CborReadHeader(br)
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -167,12 +171,14 @@ func (t *PaymentInfo) UnmarshalCBOR(r io.Reader) error {
 			if maj != cbg.MajArray {
 				return fmt.Errorf("expected cbor array")
 			}
+
 			if extra > 0 {
-				t.Vouchers = make([]*types.SignedVoucher, extra)
+				t.Vouchers = make([]*paych.SignedVoucher, extra)
 			}
+
 			for i := 0; i < int(extra); i++ {

-				var v types.SignedVoucher
+				var v paych.SignedVoucher
 				if err := v.UnmarshalCBOR(br); err != nil {
 					return err
 				}
@@ -196,19 +202,21 @@ func (t *SealedRef) MarshalCBOR(w io.Writer) error {
 		return err
 	}

-	// t.SectorID (uint64) (uint64)
+	scratch := make([]byte, 9)
+
+	// t.SectorID (abi.SectorNumber) (uint64)
 	if len("SectorID") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"SectorID\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("SectorID")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("SectorID"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("SectorID")); err != nil {
+	if _, err := io.WriteString(w, "SectorID"); err != nil {
 		return err
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.SectorID))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.SectorID)); err != nil {
 		return err
 	}

@@ -217,39 +225,41 @@ func (t *SealedRef) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Value in field \"Offset\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("Offset")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Offset"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("Offset")); err != nil {
+	if _, err := io.WriteString(w, "Offset"); err != nil {
 		return err
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.Offset))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Offset)); err != nil {
 		return err
 	}

-	// t.Size (uint64) (uint64)
+	// t.Size (abi.UnpaddedPieceSize) (uint64)
 	if len("Size") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"Size\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("Size")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Size"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("Size")); err != nil {
+	if _, err := io.WriteString(w, "Size"); err != nil {
 		return err
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.Size))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Size)); err != nil {
 		return err
 	}
+
 	return nil
 }

 func (t *SealedRef) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -267,7 +277,7 @@ func (t *SealedRef) UnmarshalCBOR(r io.Reader) error {
 	for i := uint64(0); i < n; i++ {

 		{
-			sval, err := cbg.ReadString(br)
+			sval, err := cbg.ReadStringBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -276,39 +286,51 @@ func (t *SealedRef) UnmarshalCBOR(r io.Reader) error {
 		}

 		switch name {
-		// t.SectorID (uint64) (uint64)
+		// t.SectorID (abi.SectorNumber) (uint64)
 		case "SectorID":

-			maj, extra, err = cbg.CborReadHeader(br)
-			if err != nil {
-				return err
+			{
+
+				maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+				if err != nil {
+					return err
+				}
+				if maj != cbg.MajUnsignedInt {
+					return fmt.Errorf("wrong type for uint64 field")
+				}
+				t.SectorID = abi.SectorNumber(extra)
+
 			}
-			if maj != cbg.MajUnsignedInt {
-				return fmt.Errorf("wrong type for uint64 field")
-			}
-			t.SectorID = uint64(extra)
 			// t.Offset (uint64) (uint64)
 		case "Offset":

-			maj, extra, err = cbg.CborReadHeader(br)
-			if err != nil {
-				return err
+			{
+
+				maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+				if err != nil {
+					return err
+				}
+				if maj != cbg.MajUnsignedInt {
+					return fmt.Errorf("wrong type for uint64 field")
+				}
+				t.Offset = uint64(extra)
+
 			}
-			if maj != cbg.MajUnsignedInt {
-				return fmt.Errorf("wrong type for uint64 field")
-			}
-			t.Offset = uint64(extra)
-			// t.Size (uint64) (uint64)
+			// t.Size (abi.UnpaddedPieceSize) (uint64)
 		case "Size":

-			maj, extra, err = cbg.CborReadHeader(br)
-			if err != nil {
-				return err
+			{
+
+				maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+				if err != nil {
+					return err
+				}
+				if maj != cbg.MajUnsignedInt {
+					return fmt.Errorf("wrong type for uint64 field")
+				}
+				t.Size = abi.UnpaddedPieceSize(extra)
+
 			}
-			if maj != cbg.MajUnsignedInt {
-				return fmt.Errorf("wrong type for uint64 field")
-			}
-			t.Size = uint64(extra)

 		default:
 			return fmt.Errorf("unknown struct field %d: '%s'", i, name)
@@ -326,15 +348,17 @@ func (t *SealedRefs) MarshalCBOR(w io.Writer) error {
 		return err
 	}

+	scratch := make([]byte, 9)
+
 	// t.Refs ([]api.SealedRef) (slice)
 	if len("Refs") > cbg.MaxLength {
 		return xerrors.Errorf("Value in field \"Refs\" was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len("Refs")))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Refs"))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte("Refs")); err != nil {
+	if _, err := io.WriteString(w, "Refs"); err != nil {
 		return err
 	}

@@ -342,7 +366,7 @@ func (t *SealedRefs) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.Refs was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Refs)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Refs))); err != nil {
 		return err
 	}
 	for _, v := range t.Refs {
@@ -355,8 +379,9 @@ func (t *SealedRefs) MarshalCBOR(w io.Writer) error {

 func (t *SealedRefs) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -374,7 +399,7 @@ func (t *SealedRefs) UnmarshalCBOR(r io.Reader) error {
 	for i := uint64(0); i < n; i++ {

 		{
-			sval, err := cbg.ReadString(br)
+			sval, err := cbg.ReadStringBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -386,7 +411,7 @@ func (t *SealedRefs) UnmarshalCBOR(r io.Reader) error {
 		// t.Refs ([]api.SealedRef) (slice)
 		case "Refs":

-			maj, extra, err = cbg.CborReadHeader(br)
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -398,9 +423,11 @@ func (t *SealedRefs) UnmarshalCBOR(r io.Reader) error {
 			if maj != cbg.MajArray {
 				return fmt.Errorf("expected cbor array")
 			}
+
 			if extra > 0 {
 				t.Refs = make([]SealedRef, extra)
 			}
+
 			for i := 0; i < int(extra); i++ {

 				var v SealedRef
@@ -418,3 +445,287 @@ func (t *SealedRefs) UnmarshalCBOR(r io.Reader) error {

 	return nil
 }
+func (t *SealTicket) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{162}); err != nil {
+		return err
+	}
+
+	scratch := make([]byte, 9)
+
+	// t.Value (abi.SealRandomness) (slice)
+	if len("Value") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"Value\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Value"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, "Value"); err != nil {
+		return err
+	}
+
+	if len(t.Value) > cbg.ByteArrayMaxLen {
+		return xerrors.Errorf("Byte array in field t.Value was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajByteString, uint64(len(t.Value))); err != nil {
+		return err
+	}
+
+	if _, err := w.Write(t.Value); err != nil {
+		return err
+	}
+
+	// t.Epoch (abi.ChainEpoch) (int64)
+	if len("Epoch") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"Epoch\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Epoch"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, "Epoch"); err != nil {
+		return err
+	}
+
+	if t.Epoch >= 0 {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Epoch)); err != nil {
+			return err
+		}
+	} else {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.Epoch-1)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *SealTicket) UnmarshalCBOR(r io.Reader) error {
+	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)
+
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajMap {
+		return fmt.Errorf("cbor input should be of type map")
+	}
+
+	if extra > cbg.MaxLength {
+		return fmt.Errorf("SealTicket: map struct too large (%d)", extra)
+	}
+
+	var name string
+	n := extra
+
+	for i := uint64(0); i < n; i++ {
+
+		{
+			sval, err := cbg.ReadStringBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			name = string(sval)
+		}
+
+		switch name {
+		// t.Value (abi.SealRandomness) (slice)
+		case "Value":
+
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			if extra > cbg.ByteArrayMaxLen {
+				return fmt.Errorf("t.Value: byte array too large (%d)", extra)
+			}
+			if maj != cbg.MajByteString {
+				return fmt.Errorf("expected byte array")
+			}
+			t.Value = make([]byte, extra)
+			if _, err := io.ReadFull(br, t.Value); err != nil {
+				return err
+			}
+			// t.Epoch (abi.ChainEpoch) (int64)
+		case "Epoch":
+			{
+				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+				var extraI int64
+				if err != nil {
+					return err
+				}
+				switch maj {
+				case cbg.MajUnsignedInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 positive overflow")
+					}
+				case cbg.MajNegativeInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 negative oveflow")
+					}
+					extraI = -1 - extraI
+				default:
+					return fmt.Errorf("wrong type for int64 field: %d", maj)
+				}
+
+				t.Epoch = abi.ChainEpoch(extraI)
+			}
+
+		default:
+			return fmt.Errorf("unknown struct field %d: '%s'", i, name)
+		}
+	}
+
+	return nil
+}
+func (t *SealSeed) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{162}); err != nil {
+		return err
+	}
+
+	scratch := make([]byte, 9)
+
+	// t.Value (abi.InteractiveSealRandomness) (slice)
+	if len("Value") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"Value\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Value"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, "Value"); err != nil {
+		return err
+	}
+
+	if len(t.Value) > cbg.ByteArrayMaxLen {
+		return xerrors.Errorf("Byte array in field t.Value was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajByteString, uint64(len(t.Value))); err != nil {
+		return err
+	}
+
+	if _, err := w.Write(t.Value); err != nil {
+		return err
+	}
+
+	// t.Epoch (abi.ChainEpoch) (int64)
+	if len("Epoch") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"Epoch\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Epoch"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, "Epoch"); err != nil {
+		return err
+	}
+
+	if t.Epoch >= 0 {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Epoch)); err != nil {
+			return err
+		}
+	} else {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajNegativeInt, uint64(-t.Epoch-1)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *SealSeed) UnmarshalCBOR(r io.Reader) error {
+	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)
+
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajMap {
+		return fmt.Errorf("cbor input should be of type map")
+	}
+
+	if extra > cbg.MaxLength {
+		return fmt.Errorf("SealSeed: map struct too large (%d)", extra)
+	}
+
+	var name string
+	n := extra
+
+	for i := uint64(0); i < n; i++ {
+
+		{
+			sval, err := cbg.ReadStringBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			name = string(sval)
+		}
+
+		switch name {
+		// t.Value (abi.InteractiveSealRandomness) (slice)
+		case "Value":
+
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			if extra > cbg.ByteArrayMaxLen {
+				return fmt.Errorf("t.Value: byte array too large (%d)", extra)
+			}
+			if maj != cbg.MajByteString {
+				return fmt.Errorf("expected byte array")
+			}
+			t.Value = make([]byte, extra)
+			if _, err := io.ReadFull(br, t.Value); err != nil {
+				return err
+			}
+			// t.Epoch (abi.ChainEpoch) (int64)
+		case "Epoch":
+			{
+				maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+				var extraI int64
+				if err != nil {
+					return err
+				}
+				switch maj {
+				case cbg.MajUnsignedInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 positive overflow")
+					}
+				case cbg.MajNegativeInt:
+					extraI = int64(extra)
+					if extraI < 0 {
+						return fmt.Errorf("int64 negative oveflow")
+					}
+					extraI = -1 - extraI
+				default:
+					return fmt.Errorf("wrong type for int64 field: %d", maj)
+				}
+
+				t.Epoch = abi.ChainEpoch(extraI)
+			}
+
+		default:
+			return fmt.Errorf("unknown struct field %d: '%s'", i, name)
+		}
+	}
+
+	return nil
+}
@@ -1,11 +1,12 @@
 package client

 import (
-	"github.com/filecoin-project/lotus/api/apistruct"
 	"net/http"

+	"github.com/filecoin-project/go-jsonrpc"
+
 	"github.com/filecoin-project/lotus/api"
-	"github.com/filecoin-project/lotus/lib/jsonrpc"
+	"github.com/filecoin-project/lotus/api/apistruct"
 )

 // NewCommonRPC creates a new http jsonrpc client.
@@ -14,7 +15,9 @@ func NewCommonRPC(addr string, requestHeader http.Header) (api.Common, jsonrpc.C
 	closer, err := jsonrpc.NewMergeClient(addr, "Filecoin",
 		[]interface{}{
 			&res.Internal,
-		}, requestHeader)
+		},
+		requestHeader,
+	)

 	return &res, closer, err
 }
@@ -38,7 +41,21 @@ func NewStorageMinerRPC(addr string, requestHeader http.Header) (api.StorageMine
 		[]interface{}{
 			&res.CommonStruct.Internal,
 			&res.Internal,
-		}, requestHeader)
+		},
+		requestHeader,
+	)
+
+	return &res, closer, err
+}
+
+func NewWorkerRPC(addr string, requestHeader http.Header) (api.WorkerAPI, jsonrpc.ClientCloser, error) {
+	var res apistruct.WorkerStruct
+	closer, err := jsonrpc.NewMergeClient(addr, "Filecoin",
+		[]interface{}{
+			&res.Internal,
+		},
+		requestHeader,
+	)

 	return &res, closer, err
 }
@@ -0,0 +1,379 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/token"
+	"reflect"
+	"sort"
+	"strings"
+	"time"
+	"unicode"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-bitfield"
+	"github.com/filecoin-project/go-jsonrpc/auth"
+	"github.com/filecoin-project/lotus/api"
+	"github.com/filecoin-project/lotus/api/apistruct"
+	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
+	"github.com/ipfs/go-cid"
+	"github.com/ipfs/go-filestore"
+	"github.com/libp2p/go-libp2p-core/network"
+	peer "github.com/libp2p/go-libp2p-peer"
+	"github.com/multiformats/go-multiaddr"
+)
+
+var ExampleValues = map[reflect.Type]interface{}{
+	reflect.TypeOf(auth.Permission("")): auth.Permission("write"),
+	reflect.TypeOf(""):                  "string value",
+	reflect.TypeOf(uint64(42)):          uint64(42),
+	reflect.TypeOf(byte(7)):             byte(7),
+	reflect.TypeOf([]byte{}):            []byte("byte array"),
+}
+
+func addExample(v interface{}) {
+	ExampleValues[reflect.TypeOf(v)] = v
+}
+
+func init() {
+	c, err := cid.Decode("bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4")
+	if err != nil {
+		panic(err)
+	}
+
+	ExampleValues[reflect.TypeOf(c)] = c
+
+	c2, err := cid.Decode("bafy2bzacebp3shtrn43k7g3unredz7fxn4gj533d3o43tqn2p2ipxxhrvchve")
+	if err != nil {
+		panic(err)
+	}
+
+	tsk := types.NewTipSetKey(c, c2)
+
+	ExampleValues[reflect.TypeOf(tsk)] = tsk
+
+	addr, err := address.NewIDAddress(1234)
+	if err != nil {
+		panic(err)
+	}
+
+	ExampleValues[reflect.TypeOf(addr)] = addr
+
+	pid, err := peer.IDB58Decode("12D3KooWGzxzKZYveHXtpG6AsrUJBcWxHBFS2HsEoGTxrMLvKXtf")
+	if err != nil {
+		panic(err)
+	}
+	addExample(pid)
+
+	addExample(bitfield.NewFromSet([]uint64{5}))
+	addExample(abi.RegisteredSealProof_StackedDrg32GiBV1)
+	addExample(abi.RegisteredPoStProof_StackedDrgWindow32GiBV1)
+	addExample(abi.ChainEpoch(10101))
+	addExample(crypto.SigTypeBLS)
+	addExample(int64(9))
+	addExample(12.3)
+	addExample(123)
+	addExample(uintptr(0))
+	addExample(abi.MethodNum(1))
+	addExample(exitcode.ExitCode(0))
+	addExample(crypto.DomainSeparationTag_ElectionProofProduction)
+	addExample(true)
+	addExample(abi.UnpaddedPieceSize(1024))
+	addExample(abi.UnpaddedPieceSize(1024).Padded())
+	addExample(abi.DealID(5432))
+	addExample(filestore.StatusFileChanged)
+	addExample(abi.SectorNumber(9))
+	addExample(abi.SectorSize(32 * 1024 * 1024 * 1024))
+	addExample(api.MpoolChange(0))
+	addExample(network.Connected)
+	addExample(dtypes.NetworkName("lotus"))
+	addExample(api.SyncStateStage(1))
+	addExample(build.APIVersion)
+	addExample(api.PCHInbound)
+	addExample(time.Minute)
+	addExample(&types.ExecutionTrace{
+		Msg:    exampleValue(reflect.TypeOf(&types.Message{}), nil).(*types.Message),
+		MsgRct: exampleValue(reflect.TypeOf(&types.MessageReceipt{}), nil).(*types.MessageReceipt),
+	})
+	addExample(map[string]types.Actor{
+		"t01236": exampleValue(reflect.TypeOf(types.Actor{}), nil).(types.Actor),
+	})
+	addExample(map[string]api.MarketDeal{
+		"t026363": exampleValue(reflect.TypeOf(api.MarketDeal{}), nil).(api.MarketDeal),
+	})
+	addExample(map[string]api.MarketBalance{
+		"t026363": exampleValue(reflect.TypeOf(api.MarketBalance{}), nil).(api.MarketBalance),
+	})
+
+	maddr, err := multiaddr.NewMultiaddr("/ip4/52.36.61.156/tcp/1347/p2p/12D3KooWFETiESTf1v4PGUvtnxMAcEFMzLZbJGg4tjWfGEimYior")
+	if err != nil {
+		panic(err)
+	}
+
+	// because reflect.TypeOf(maddr) returns the concrete type...
+	ExampleValues[reflect.TypeOf(struct{ A multiaddr.Multiaddr }{}).Field(0).Type] = maddr
+
+}
+
+func exampleValue(t, parent reflect.Type) interface{} {
+	v, ok := ExampleValues[t]
+	if ok {
+		return v
+	}
+
+	switch t.Kind() {
+	case reflect.Slice:
+		out := reflect.New(t).Elem()
+		reflect.Append(out, reflect.ValueOf(exampleValue(t.Elem(), t)))
+		return out.Interface()
+	case reflect.Chan:
+		return exampleValue(t.Elem(), nil)
+	case reflect.Struct:
+		es := exampleStruct(t, parent)
+		v := reflect.ValueOf(es).Elem().Interface()
+		ExampleValues[t] = v
+		return v
+	case reflect.Array:
+		out := reflect.New(t).Elem()
+		for i := 0; i < t.Len(); i++ {
+			out.Index(i).Set(reflect.ValueOf(exampleValue(t.Elem(), t)))
+		}
+		return out.Interface()
+
+	case reflect.Ptr:
+		if t.Elem().Kind() == reflect.Struct {
+			es := exampleStruct(t.Elem(), t)
+			//ExampleValues[t] = es
+			return es
+		}
+	case reflect.Interface:
+		return struct{}{}
+	}
+
+	panic(fmt.Sprintf("No example value for type: %s", t))
+}
+
+func exampleStruct(t, parent reflect.Type) interface{} {
+	ns := reflect.New(t)
+	for i := 0; i < t.NumField(); i++ {
+		f := t.Field(i)
+		if f.Type == parent {
+			continue
+		}
+		if strings.Title(f.Name) == f.Name {
+			ns.Elem().Field(i).Set(reflect.ValueOf(exampleValue(f.Type, t)))
+		}
+	}
+
+	return ns.Interface()
+}
+
+type Visitor struct {
+	Methods map[string]ast.Node
+}
+
+func (v *Visitor) Visit(node ast.Node) ast.Visitor {
+	st, ok := node.(*ast.TypeSpec)
+	if !ok {
+		return v
+	}
+
+	if st.Name.Name != "FullNode" {
+		return nil
+	}
+
+	iface := st.Type.(*ast.InterfaceType)
+	for _, m := range iface.Methods.List {
+		if len(m.Names) > 0 {
+			v.Methods[m.Names[0].Name] = m
+		}
+	}
+
+	return v
+}
+
+const noComment = "There are not yet any comments for this method."
+
+func parseApiASTInfo() (map[string]string, map[string]string) { //nolint:golint
+	fset := token.NewFileSet()
+	pkgs, err := parser.ParseDir(fset, "./api", nil, parser.AllErrors|parser.ParseComments)
+	if err != nil {
+		fmt.Println("parse error: ", err)
+	}
+
+	ap := pkgs["api"]
+
+	f := ap.Files["api/api_full.go"]
+
+	cmap := ast.NewCommentMap(fset, f, f.Comments)
+
+	v := &Visitor{make(map[string]ast.Node)}
+	ast.Walk(v, pkgs["api"])
+
+	groupDocs := make(map[string]string)
+	out := make(map[string]string)
+	for mn, node := range v.Methods {
+		cs := cmap.Filter(node).Comments()
+		if len(cs) == 0 {
+			out[mn] = noComment
+		} else {
+			for _, c := range cs {
+				if strings.HasPrefix(c.Text(), "MethodGroup:") {
+					parts := strings.Split(c.Text(), "\n")
+					groupName := strings.TrimSpace(parts[0][12:])
+					comment := strings.Join(parts[1:], "\n")
+					groupDocs[groupName] = comment
+
+					break
+				}
+			}
+
+			last := cs[len(cs)-1].Text()
+			if !strings.HasPrefix(last, "MethodGroup:") {
+				out[mn] = last
+			} else {
+				out[mn] = noComment
+			}
+		}
+	}
+	return out, groupDocs
+}
+
+type MethodGroup struct {
+	GroupName string
+	Header    string
+	Methods   []*Method
+}
+
+type Method struct {
+	Comment         string
+	Name            string
+	InputExample    string
+	ResponseExample string
+}
+
+func methodGroupFromName(mn string) string {
+	i := strings.IndexFunc(mn[1:], func(r rune) bool {
+		return unicode.IsUpper(r)
+	})
+	if i < 0 {
+		return ""
+	}
+	return mn[:i+1]
+}
+
+func main() {
+
+	comments, groupComments := parseApiASTInfo()
+
+	groups := make(map[string]*MethodGroup)
+
+	var api struct{ api.FullNode }
+	t := reflect.TypeOf(api)
+	for i := 0; i < t.NumMethod(); i++ {
+		m := t.Method(i)
+
+		groupName := methodGroupFromName(m.Name)
+
+		g, ok := groups[groupName]
+		if !ok {
+			g = new(MethodGroup)
+			g.Header = groupComments[groupName]
+			g.GroupName = groupName
+			groups[groupName] = g
+		}
+
+		var args []interface{}
+		ft := m.Func.Type()
+		for j := 2; j < ft.NumIn(); j++ {
+			inp := ft.In(j)
+			args = append(args, exampleValue(inp, nil))
+		}
+
+		v, err := json.MarshalIndent(args, "", "  ")
+		if err != nil {
+			panic(err)
+		}
+
+		outv := exampleValue(ft.Out(0), nil)
+
+		ov, err := json.MarshalIndent(outv, "", "  ")
+		if err != nil {
+			panic(err)
+		}
+
+		g.Methods = append(g.Methods, &Method{
+			Name:            m.Name,
+			Comment:         comments[m.Name],
+			InputExample:    string(v),
+			ResponseExample: string(ov),
+		})
+	}
+
+	var groupslice []*MethodGroup
+	for _, g := range groups {
+		groupslice = append(groupslice, g)
+	}
+
+	sort.Slice(groupslice, func(i, j int) bool {
+		return groupslice[i].GroupName < groupslice[j].GroupName
+	})
+
+	fmt.Printf("# Groups\n")
+
+	for _, g := range groupslice {
+		fmt.Printf("* [%s](#%s)\n", g.GroupName, g.GroupName)
+		for _, method := range g.Methods {
+			fmt.Printf("  * [%s](#%s)\n", method.Name, method.Name)
+		}
+	}
+
+	permStruct := reflect.TypeOf(apistruct.FullNodeStruct{}.Internal)
+	commonPermStruct := reflect.TypeOf(apistruct.CommonStruct{}.Internal)
+
+	for _, g := range groupslice {
+		g := g
+		fmt.Printf("## %s\n", g.GroupName)
+		fmt.Printf("%s\n\n", g.Header)
+
+		sort.Slice(g.Methods, func(i, j int) bool {
+			return g.Methods[i].Name < g.Methods[j].Name
+		})
+
+		for _, m := range g.Methods {
+			fmt.Printf("### %s\n", m.Name)
+			fmt.Printf("%s\n\n", m.Comment)
+
+			meth, ok := permStruct.FieldByName(m.Name)
+			if !ok {
+				meth, ok = commonPermStruct.FieldByName(m.Name)
+				if !ok {
+					panic("no perms for method: " + m.Name)
+				}
+			}
+
+			perms := meth.Tag.Get("perm")
+
+			fmt.Printf("Perms: %s\n\n", perms)
+
+			if strings.Count(m.InputExample, "\n") > 0 {
+				fmt.Printf("Inputs:\n```json\n%s\n```\n\n", m.InputExample)
+			} else {
+				fmt.Printf("Inputs: `%s`\n\n", m.InputExample)
+			}
+
+			if strings.Count(m.ResponseExample, "\n") > 0 {
+				fmt.Printf("Response:\n```json\n%s\n```\n\n", m.ResponseExample)
+			} else {
+				fmt.Printf("Response: `%s`\n\n", m.ResponseExample)
+			}
+		}
+	}
+}
@@ -8,15 +8,26 @@ import (
 	"math/rand"
 	"os"
 	"path/filepath"
+	"sync/atomic"
 	"testing"
 	"time"

-	logging "github.com/ipfs/go-log/v2"
+	"github.com/ipfs/go-cid"

+	files "github.com/ipfs/go-ipfs-files"
+	logging "github.com/ipfs/go-log/v2"
+	"github.com/ipld/go-car"
+
+	"github.com/filecoin-project/go-fil-markets/storagemarket"
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
+	dag "github.com/ipfs/go-merkledag"
+	dstest "github.com/ipfs/go-merkledag/test"
+	unixfile "github.com/ipfs/go-unixfs/file"
+
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/node/impl"
+	ipld "github.com/ipfs/go-ipld-format"
 )

 func init() {
@@ -24,11 +35,11 @@ func init() {
 	build.InsecurePoStValidation = true
 }

-func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration) {
-	os.Setenv("BELLMAN_NO_GPU", "1")
+func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration, carExport bool) {
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")

 	ctx := context.Background()
-	n, sn := b(t, 1, []int{0})
+	n, sn := b(t, 1, oneMiner)
 	client := n[0].FullNode.(*impl.FullNodeAPI)
 	miner := sn[0]

@@ -42,8 +53,67 @@ func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration) {
 	}
 	time.Sleep(time.Second)

-	data := make([]byte, 1000)
-	rand.New(rand.NewSource(5)).Read(data)
+	mine := int64(1)
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for atomic.LoadInt64(&mine) == 1 {
+			time.Sleep(blocktime)
+			if err := sn[0].MineOne(ctx, func(bool, error) {}); err != nil {
+				t.Error(err)
+			}
+		}
+	}()
+
+	makeDeal(t, ctx, 6, client, miner, carExport)
+
+	atomic.AddInt64(&mine, -1)
+	fmt.Println("shutting down mining")
+	<-done
+}
+
+func TestDoubleDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration) {
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
+
+	ctx := context.Background()
+	n, sn := b(t, 1, oneMiner)
+	client := n[0].FullNode.(*impl.FullNodeAPI)
+	miner := sn[0]
+
+	addrinfo, err := client.NetAddrsListen(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := miner.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Second)
+
+	mine := int64(1)
+	done := make(chan struct{})
+
+	go func() {
+		defer close(done)
+		for atomic.LoadInt64(&mine) == 1 {
+			time.Sleep(blocktime)
+			if err := sn[0].MineOne(ctx, func(bool, error) {}); err != nil {
+				t.Error(err)
+			}
+		}
+	}()
+
+	makeDeal(t, ctx, 6, client, miner, false)
+	makeDeal(t, ctx, 7, client, miner, false)
+
+	atomic.AddInt64(&mine, -1)
+	fmt.Println("shutting down mining")
+	<-done
+}
+
+func makeDeal(t *testing.T, ctx context.Context, rseed int, client *impl.FullNodeAPI, miner TestStorageNode, carExport bool) {
+	data := make([]byte, 1600)
+	rand.New(rand.NewSource(int64(rseed))).Read(data)

 	r := bytes.NewReader(data)
 	fcid, err := client.ClientImportLocal(ctx, r)
@@ -51,36 +121,43 @@ func TestDealFlow(t *testing.T, b APIBuilder, blocktime time.Duration) {
 		t.Fatal(err)
 	}

+	fmt.Println("FILE CID: ", fcid)
+
+	deal := startDeal(t, ctx, miner, client, fcid)
+
+	// TODO: this sleep is only necessary because deals don't immediately get logged in the dealstore, we should fix this
+	time.Sleep(time.Second)
+	waitDealSealed(t, ctx, client, deal)
+
+	// Retrieval
+
+	testRetrieval(t, ctx, err, client, fcid, carExport, data)
+}
+
+func startDeal(t *testing.T, ctx context.Context, miner TestStorageNode, client *impl.FullNodeAPI, fcid cid.Cid) *cid.Cid {
 	maddr, err := miner.ActorAddress(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}

-	fmt.Println("FILE CID: ", fcid)
-
-	mine := true
-	done := make(chan struct{})
-
-	go func() {
-		defer close(done)
-		for mine {
-			time.Sleep(blocktime)
-			if err := sn[0].MineOne(ctx); err != nil {
-				t.Error(err)
-			}
-		}
-	}()
 	addr, err := client.WalletDefaultAddress(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}
-	deal, err := client.ClientStartDeal(ctx, fcid, addr, maddr, types.NewInt(40000000), 100)
+	deal, err := client.ClientStartDeal(ctx, &api.StartDealParams{
+		Data:              &storagemarket.DataRef{Root: fcid},
+		Wallet:            addr,
+		Miner:             maddr,
+		EpochPrice:        types.NewInt(1000000),
+		MinBlocksDuration: 100,
+	})
 	if err != nil {
-		t.Fatal(err)
+		t.Fatalf("%+v", err)
 	}
+	return deal
+}

-	// TODO: this sleep is only necessary because deals don't immediately get logged in the dealstore, we should fix this
-	time.Sleep(time.Second)
+func waitDealSealed(t *testing.T, ctx context.Context, client *impl.FullNodeAPI, deal *cid.Cid) {
 loop:
 	for {
 		di, err := client.ClientGetDealInfo(ctx, *deal)
@@ -88,22 +165,22 @@ loop:
 			t.Fatal(err)
 		}
 		switch di.State {
-		case api.DealRejected:
+		case storagemarket.StorageDealProposalRejected:
 			t.Fatal("deal rejected")
-		case api.DealFailed:
+		case storagemarket.StorageDealFailing:
 			t.Fatal("deal failed")
-		case api.DealError:
-			t.Fatal("deal errored")
-		case api.DealComplete:
+		case storagemarket.StorageDealError:
+			t.Fatal("deal errored", di.Message)
+		case storagemarket.StorageDealActive:
 			fmt.Println("COMPLETE", di)
 			break loop
 		}
-		fmt.Println("Deal state: ", api.DealStates[di.State])
+		fmt.Println("Deal state: ", storagemarket.DealStates[di.State])
 		time.Sleep(time.Second / 2)
 	}
+}

-	// Retrieval
-
+func testRetrieval(t *testing.T, ctx context.Context, err error, client *impl.FullNodeAPI, fcid cid.Cid, carExport bool, data []byte) {
 	offers, err := client.ClientFindData(ctx, fcid)
 	if err != nil {
 		t.Fatal(err)
@@ -117,14 +194,18 @@ loop:
 	if err != nil {
 		t.Fatal(err)
 	}
-	defer os.RemoveAll(rpath)
+	defer os.RemoveAll(rpath) //nolint:errcheck

 	caddr, err := client.WalletDefaultAddress(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}

-	err = client.ClientRetrieve(ctx, offers[0].Order(caddr), filepath.Join(rpath, "ret"))
+	ref := &api.FileRef{
+		Path:  filepath.Join(rpath, "ret"),
+		IsCAR: carExport,
+	}
+	err = client.ClientRetrieve(ctx, offers[0].Order(caddr), ref)
 	if err != nil {
 		t.Fatalf("%+v", err)
 	}
@@ -134,11 +215,41 @@ loop:
 		t.Fatal(err)
 	}

+	if carExport {
+		rdata = extractCarData(t, ctx, rdata, rpath)
+	}
+
 	if !bytes.Equal(rdata, data) {
 		t.Fatal("wrong data retrieved")
 	}
+}

-	mine = false
-	fmt.Println("shutting down mining")
-	<-done
+func extractCarData(t *testing.T, ctx context.Context, rdata []byte, rpath string) []byte {
+	bserv := dstest.Bserv()
+	ch, err := car.LoadCar(bserv.Blockstore(), bytes.NewReader(rdata))
+	if err != nil {
+		t.Fatal(err)
+	}
+	b, err := bserv.GetBlock(ctx, ch.Roots[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	nd, err := ipld.Decode(b)
+	if err != nil {
+		t.Fatal(err)
+	}
+	dserv := dag.NewDAGService(bserv)
+	fil, err := unixfile.NewUnixfsFile(ctx, dserv, nd)
+	if err != nil {
+		t.Fatal(err)
+	}
+	outPath := filepath.Join(rpath, "retLoadedCAR")
+	if err := files.WriteTo(fil, outPath); err != nil {
+		t.Fatal(err)
+	}
+	rdata, err = ioutil.ReadFile(outPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return rdata
 }
@@ -1,31 +1,200 @@
 package test

 import (
+	"bytes"
 	"context"
+	"fmt"
+	"math/rand"
+	"os"
+	"sync/atomic"
 	"testing"
+	"time"

+	logging "github.com/ipfs/go-log/v2"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/stretchr/testify/require"
+
+	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/node/impl"
 )

+var log = logging.Logger("apitest")
+
 func (ts *testSuite) testMining(t *testing.T) {
 	ctx := context.Background()
-	apis, sn := ts.makeNodes(t, 1, []int{0})
+	apis, sn := ts.makeNodes(t, 1, oneMiner)
 	api := apis[0]

 	h1, err := api.ChainHead(ctx)
 	require.NoError(t, err)
-	require.Equal(t, uint64(0), h1.Height())
+	require.Equal(t, abi.ChainEpoch(0), h1.Height())

 	newHeads, err := api.ChainNotify(ctx)
 	require.NoError(t, err)
 	<-newHeads

-	err = sn[0].MineOne(ctx)
+	err = sn[0].MineOne(ctx, func(bool, error) {})
 	require.NoError(t, err)

 	<-newHeads

 	h2, err := api.ChainHead(ctx)
 	require.NoError(t, err)
-	require.Equal(t, uint64(1), h2.Height())
+	require.Equal(t, abi.ChainEpoch(1), h2.Height())
+}
+
+func (ts *testSuite) testMiningReal(t *testing.T) {
+	build.InsecurePoStValidation = false
+	defer func() {
+		build.InsecurePoStValidation = true
+	}()
+
+	ctx := context.Background()
+	apis, sn := ts.makeNodes(t, 1, oneMiner)
+	api := apis[0]
+
+	h1, err := api.ChainHead(ctx)
+	require.NoError(t, err)
+	require.Equal(t, abi.ChainEpoch(0), h1.Height())
+
+	newHeads, err := api.ChainNotify(ctx)
+	require.NoError(t, err)
+	<-newHeads
+
+	err = sn[0].MineOne(ctx, func(bool, error) {})
+	require.NoError(t, err)
+
+	<-newHeads
+
+	h2, err := api.ChainHead(ctx)
+	require.NoError(t, err)
+	require.Equal(t, abi.ChainEpoch(1), h2.Height())
+
+	err = sn[0].MineOne(ctx, func(bool, error) {})
+	require.NoError(t, err)
+
+	<-newHeads
+
+	h2, err = api.ChainHead(ctx)
+	require.NoError(t, err)
+	require.Equal(t, abi.ChainEpoch(2), h2.Height())
+}
+
+func TestDealMining(t *testing.T, b APIBuilder, blocktime time.Duration, carExport bool) {
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
+
+	// test making a deal with a fresh miner, and see if it starts to mine
+
+	ctx := context.Background()
+	n, sn := b(t, 1, []StorageMiner{
+		{Full: 0, Preseal: PresealGenesis},
+		{Full: 0, Preseal: 0}, // TODO: Add support for storage miners on non-first full node
+	})
+	client := n[0].FullNode.(*impl.FullNodeAPI)
+	provider := sn[1]
+	genesisMiner := sn[0]
+
+	addrinfo, err := client.NetAddrsListen(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := provider.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+
+	if err := genesisMiner.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+
+	time.Sleep(time.Second)
+
+	data := make([]byte, 600)
+	rand.New(rand.NewSource(5)).Read(data)
+
+	r := bytes.NewReader(data)
+	fcid, err := client.ClientImportLocal(ctx, r)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	fmt.Println("FILE CID: ", fcid)
+
+	var mine int32 = 1
+	done := make(chan struct{})
+	minedTwo := make(chan struct{})
+
+	go func() {
+		doneMinedTwo := false
+		defer close(done)
+
+		prevExpect := 0
+		for atomic.LoadInt32(&mine) != 0 {
+			wait := make(chan int, 2)
+			mdone := func(mined bool, err error) {
+				go func() {
+					n := 0
+					if mined {
+						n = 1
+					}
+					wait <- n
+				}()
+			}
+
+			if err := sn[0].MineOne(ctx, mdone); err != nil {
+				t.Error(err)
+			}
+
+			if err := sn[1].MineOne(ctx, mdone); err != nil {
+				t.Error(err)
+			}
+
+			expect := <-wait
+			expect += <-wait
+
+			time.Sleep(blocktime)
+
+			for {
+				n := 0
+				for i, node := range sn {
+					mb, err := node.MiningBase(ctx)
+					if err != nil {
+						t.Error(err)
+						return
+					}
+
+					if len(mb.Cids()) != expect {
+						log.Warnf("node %d mining base not complete (%d, want %d)", i, len(mb.Cids()), expect)
+						continue
+					}
+					n++
+				}
+				if n == len(sn) {
+					break
+				}
+				time.Sleep(blocktime)
+			}
+
+			if prevExpect == 2 && expect == 2 && !doneMinedTwo {
+				close(minedTwo)
+				doneMinedTwo = true
+			}
+
+			prevExpect = expect
+		}
+	}()
+
+	deal := startDeal(t, ctx, provider, client, fcid)
+
+	// TODO: this sleep is only necessary because deals don't immediately get logged in the dealstore, we should fix this
+	time.Sleep(time.Second)
+
+	waitDealSealed(t, ctx, client, deal)
+
+	<-minedTwo
+
+	atomic.StoreInt32(&mine, 0)
+	fmt.Println("shutting down mining")
+	<-done
 }
@@ -4,9 +4,11 @@ import (
 	"context"
 	"testing"

+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
-	"github.com/stretchr/testify/assert"
 )

 type TestNode struct {
@@ -16,7 +18,16 @@ type TestNode struct {
 type TestStorageNode struct {
 	api.StorageMiner

-	MineOne func(context.Context) error
+	MineOne func(context.Context, func(bool, error)) error
+}
+
+var PresealGenesis = -1
+
+const GenesisPreseals = 2
+
+type StorageMiner struct {
+	Full    int
+	Preseal int
 }

 // APIBuilder is a function which is invoked in test suite to provide
@@ -24,7 +35,7 @@ type TestStorageNode struct {
 //
 // storage array defines storage nodes, numbers in the array specify full node
 // index the storage node 'belongs' to
-type APIBuilder func(t *testing.T, nFull int, storage []int) ([]TestNode, []TestStorageNode)
+type APIBuilder func(t *testing.T, nFull int, storage []StorageMiner) ([]TestNode, []TestStorageNode)
 type testSuite struct {
 	makeNodes APIBuilder
 }
@@ -39,25 +50,26 @@ func TestApis(t *testing.T, b APIBuilder) {
 	t.Run("id", ts.testID)
 	t.Run("testConnectTwo", ts.testConnectTwo)
 	t.Run("testMining", ts.testMining)
+	t.Run("testMiningReal", ts.testMiningReal)
 }

+var oneMiner = []StorageMiner{{Full: 0, Preseal: PresealGenesis}}
+
 func (ts *testSuite) testVersion(t *testing.T) {
 	ctx := context.Background()
-	apis, _ := ts.makeNodes(t, 1, []int{0})
+	apis, _ := ts.makeNodes(t, 1, oneMiner)
 	api := apis[0]

 	v, err := api.Version(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}
-	if v.Version != build.BuildVersion {
-		t.Error("Version didn't work properly")
-	}
+	require.Equal(t, v.Version, build.BuildVersion)
 }

 func (ts *testSuite) testID(t *testing.T) {
 	ctx := context.Background()
-	apis, _ := ts.makeNodes(t, 1, []int{0})
+	apis, _ := ts.makeNodes(t, 1, oneMiner)
 	api := apis[0]

 	id, err := api.ID(ctx)
@@ -69,7 +81,7 @@ func (ts *testSuite) testID(t *testing.T) {

 func (ts *testSuite) testConnectTwo(t *testing.T) {
 	ctx := context.Background()
-	apis, _ := ts.makeNodes(t, 2, []int{0})
+	apis, _ := ts.makeNodes(t, 2, oneMiner)

 	p, err := apis[0].NetPeers(ctx)
 	if err != nil {
@@ -0,0 +1,169 @@
+package test
+
+import (
+	"context"
+	"fmt"
+	"github.com/filecoin-project/lotus/api"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	miner2 "github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	sealing "github.com/filecoin-project/storage-fsm"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/node/impl"
+)
+
+func TestPledgeSector(t *testing.T, b APIBuilder, blocktime time.Duration, nSectors int) {
+	os.Setenv("BELLMAN_NO_GPU", "1")
+
+	ctx := context.Background()
+	n, sn := b(t, 1, oneMiner)
+	client := n[0].FullNode.(*impl.FullNodeAPI)
+	miner := sn[0]
+
+	addrinfo, err := client.NetAddrsListen(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := miner.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Second)
+
+	mine := true
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for mine {
+			time.Sleep(blocktime)
+			if err := sn[0].MineOne(ctx, func(bool, error) {}); err != nil {
+				t.Error(err)
+			}
+		}
+	}()
+
+	pledgeSectors(t, ctx, miner, nSectors)
+
+	mine = false
+	<-done
+}
+
+func pledgeSectors(t *testing.T, ctx context.Context, miner TestStorageNode, n int) {
+	for i := 0; i < n; i++ {
+		err := miner.PledgeSector(ctx)
+		require.NoError(t, err)
+	}
+
+	for {
+		s, err := miner.SectorsList(ctx) // Note - the test builder doesn't import genesis sectors into FSM
+		require.NoError(t, err)
+		fmt.Printf("Sectors: %d\n", len(s))
+		if len(s) >= n {
+			break
+		}
+
+		time.Sleep(100 * time.Millisecond)
+	}
+
+	fmt.Printf("All sectors is fsm\n")
+
+	s, err := miner.SectorsList(ctx)
+	require.NoError(t, err)
+
+	toCheck := map[abi.SectorNumber]struct{}{}
+	for _, number := range s {
+		toCheck[number] = struct{}{}
+	}
+
+	for len(toCheck) > 0 {
+		for n := range toCheck {
+			st, err := miner.SectorsStatus(ctx, n)
+			require.NoError(t, err)
+			if st.State == api.SectorState(sealing.Proving) {
+				delete(toCheck, n)
+			}
+			if strings.Contains(string(st.State), "Fail") {
+				t.Fatal("sector in a failed state", st.State)
+			}
+		}
+
+		time.Sleep(100 * time.Millisecond)
+		fmt.Printf("WaitSeal: %d\n", len(s))
+	}
+}
+
+func TestWindowPost(t *testing.T, b APIBuilder, blocktime time.Duration, nSectors int) {
+	os.Setenv("BELLMAN_NO_GPU", "1")
+
+	ctx := context.Background()
+	n, sn := b(t, 1, oneMiner)
+	client := n[0].FullNode.(*impl.FullNodeAPI)
+	miner := sn[0]
+
+	addrinfo, err := client.NetAddrsListen(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := miner.NetConnect(ctx, addrinfo); err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Second)
+
+	mine := true
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for mine {
+			time.Sleep(blocktime)
+			if err := sn[0].MineOne(ctx, func(bool, error) {}); err != nil {
+				t.Error(err)
+			}
+		}
+	}()
+
+	pledgeSectors(t, ctx, miner, nSectors)
+
+	maddr, err := miner.ActorAddress(ctx)
+	require.NoError(t, err)
+
+	di, err := client.StateMinerProvingDeadline(ctx, maddr, types.EmptyTSK)
+	require.NoError(t, err)
+
+	fmt.Printf("Running one proving periods\n")
+
+	for {
+		head, err := client.ChainHead(ctx)
+		require.NoError(t, err)
+
+		if head.Height() > di.PeriodStart+(miner2.WPoStProvingPeriod)+2 {
+			break
+		}
+
+		if head.Height()%100 == 0 {
+			fmt.Printf("@%d\n", head.Height())
+		}
+		time.Sleep(blocktime)
+	}
+
+	p, err := client.StateMinerPower(ctx, maddr, types.EmptyTSK)
+	require.NoError(t, err)
+
+	ssz, err := miner.ActorSectorSize(ctx, maddr)
+	require.NoError(t, err)
+
+	require.Equal(t, p.MinerPower, p.TotalPower)
+	require.Equal(t, p.MinerPower.RawBytePower, types.NewInt(uint64(ssz)*uint64(nSectors+GenesisPreseals)))
+
+	// TODO: Inject faults here
+
+	mine = false
+	<-done
+}
@@ -2,41 +2,16 @@ package api

 import (
 	"encoding/json"
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"

+	"github.com/libp2p/go-libp2p-core/peer"
 	ma "github.com/multiformats/go-multiaddr"
 )

-type DealState = uint64
-
-const (
-	DealUnknown  = DealState(iota)
-	DealRejected // Provider didn't like the proposal
-	DealAccepted // Proposal accepted, data moved
-	DealStaged   // Data put into the sector
-	DealSealing  // Data in process of being sealed
-
-	DealFailed
-	DealComplete
-
-	// Internal
-
-	DealError // deal failed with an unexpected error
-
-	DealNoUpdate = DealUnknown
-)
-
-var DealStates = []string{
-	"DealUnknown",
-	"DealRejected",
-	"DealAccepted",
-	"DealStaged",
-	"DealSealing",
-	"DealFailed",
-	"DealComplete",
-	"DealError",
-}
-
 // TODO: check if this exists anywhere else
+
 type MultiaddrSlice []ma.Multiaddr

 func (m *MultiaddrSlice) UnmarshalJSON(raw []byte) (err error) {
@@ -57,3 +32,46 @@ func (m *MultiaddrSlice) UnmarshalJSON(raw []byte) (err error) {
 }

 var _ json.Unmarshaler = new(MultiaddrSlice)
+
+type ObjStat struct {
+	Size  uint64
+	Links uint64
+}
+
+type PubsubScore struct {
+	ID    peer.ID
+	Score float64
+}
+
+type MinerInfo struct {
+	Owner                      address.Address // Must be an ID-address.
+	Worker                     address.Address // Must be an ID-address.
+	NewWorker                  address.Address // Must be an ID-address.
+	WorkerChangeEpoch          abi.ChainEpoch
+	PeerId                     peer.ID
+	Multiaddrs                 []abi.Multiaddrs
+	SealProofType              abi.RegisteredSealProof
+	SectorSize                 abi.SectorSize
+	WindowPoStPartitionSectors uint64
+}
+
+func NewApiMinerInfo(info miner.MinerInfo) MinerInfo {
+	mi := MinerInfo{
+		Owner:                      info.Owner,
+		Worker:                     info.Worker,
+		NewWorker:                  address.Undef,
+		WorkerChangeEpoch:          -1,
+		PeerId:                     peer.ID(info.PeerId),
+		Multiaddrs:                 info.Multiaddrs,
+		SealProofType:              info.SealProofType,
+		SectorSize:                 info.SectorSize,
+		WindowPoStPartitionSectors: info.WindowPoStPartitionSectors,
+	}
+
+	if info.PendingWorkerKey != nil {
+		mi.NewWorker = info.PendingWorkerKey.NewWorker
+		mi.WorkerChangeEpoch = info.PendingWorkerKey.EffectiveAt
+	}
+
+	return mi
+}
@@ -4,12 +4,12 @@ import (
 	"context"

 	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
 )

-type SignFunc = func(context.Context, []byte) (*types.Signature, error)
+type SignFunc = func(context.Context, []byte) (*crypto.Signature, error)

-type Signer func(context.Context, address.Address, []byte) (*types.Signature, error)
+type Signer func(context.Context, address.Address, []byte) (*crypto.Signature, error)

 type Signable interface {
 	Sign(context.Context, SignFunc) error
@@ -17,7 +17,7 @@ type Signable interface {

 func SignWith(ctx context.Context, signer Signer, addr address.Address, signable ...Signable) error {
 	for _, s := range signable {
-		err := s.Sign(ctx, func(ctx context.Context, b []byte) (*types.Signature, error) {
+		err := s.Sign(ctx, func(ctx context.Context, b []byte) (*crypto.Signature, error) {
 			return signer(ctx, addr, b)
 		})
 		if err != nil {
@@ -1,177 +0,0 @@
-#!/bin/sh
-
-GOCC=${GOCC=go}
-
-die() {
-	echo "$@" >&2
-	exit 1
-}
-
-have_binary() {
-	type "$1" > /dev/null 2> /dev/null
-}
-
-check_writable() {
-	printf "" > "$1" && rm "$1"
-}
-
-try_download() {
-	url="$1"
-	output="$2"
-	command="$3"
-	util_name="$(set -- $command; echo "$1")"
-
-	if ! have_binary "$util_name"; then
-		return 1
-	fi
-
-	printf '==> Using %s to download "%s" to "%s"\n' "$util_name" "$url" "$output"
-	if eval "$command"; then
-		echo "==> Download complete!"
-		return
-	else
-		echo "error: couldn't download with $util_name ($?)"
-		return 1
-	fi
-}
-
-download() {
-	dl_url="$1"
-	dl_output="$2"
-
-	test "$#" -eq "2" || die "download requires exactly two arguments, was given $@"
-
-	if ! check_writable "$dl_output"; then
-		die "download error: cannot write to $dl_output"
-	fi
-
-	try_download "$dl_url" "$dl_output" "wget '$dl_url' -O '$dl_output'" && return
-	try_download "$dl_url" "$dl_output" "curl --silent --fail --output '$dl_output' '$dl_url'" && return
-	try_download "$dl_url" "$dl_output" "fetch '$dl_url' -o '$dl_output'" && return
-	try_download "$dl_url" "$dl_output" "http '$dl_url' > '$dl_output'" && return
-	try_download "$dl_url" "$dl_output" "ftp -o '$dl_output' '$dl_url'" && return
-
-	die "Unable to download $dl_url. exiting."
-}
-
-unarchive() {
-	ua_archivetype="$1"
-	ua_infile="$2"
-	ua_outfile="$3"
-	ua_distname="$4"
-	ua_binpostfix=""
-	ua_os=$(uname -o)
-
-	if [ "$ua_os" = "Msys" ] || [ "$ua_os" = "Cygwin" ] ; then
-	    ua_binpostfix=".exe"
-	fi
-	ua_outfile="$ua_outfile$ua_binpostfix"
-
-	if ! check_writable "$ua_outfile"; then
-		die "unarchive error: cannot write to $ua_outfile"
-	fi
-
-	case "$ua_archivetype" in
-		tar.gz)
-			if have_binary tar; then
-				echo "==> using 'tar' to extract binary from archive"
-				< "$ua_infile" tar -Ozxf - "$ua_distname/$ua_distname$ua_binpostfix" > "$ua_outfile" \
-					|| die "tar has failed"
-			else
-				die "no binary on system for extracting tar files"
-			fi
-			;;
-		zip)
-			if have_binary unzip; then
-				echo "==> using 'unzip' to extract binary from archive"
-				unzip -p "$ua_infile" "$ua_distname/$ua_distname$ua_binpostfix" > "$ua_outfile" \
-					|| die "unzip has failed"
-			else
-				die "no installed method for extracting .zip archives"
-			fi
-			;;
-		*)
-			die "unrecognized archive type '$ua_archivetype'"
-	esac
-
-	chmod +x "$ua_outfile" || die "chmod has failed"
-}
-
-get_go_vars() {
-	if [ ! -z "$GOOS" ] && [ ! -z "$GOARCH" ]; then
-		printf "%s-%s" "$GOOS" "$GOARCH"
-	elif have_binary go; then
-		printf "%s-%s" "$($GOCC env GOOS)" "$($GOCC env GOARCH)"
-	else
-		die "no way of determining system GOOS and GOARCH\nPlease manually set GOOS and GOARCH then retry."
-	fi
-}
-
-mkurl() {
-	m_root="$1"
-	m_name="$2"
-	m_vers="$3"
-	m_archive="$4"
-	m_govars=$(get_go_vars) || die "could not get go env vars"
-
-	echo "https://ipfs.io$m_root/$m_name/$m_vers/${m_name}_${m_vers}_$m_govars.$m_archive"
-}
-
-distroot="$1"
-distname="$2"
-outpath="$3"
-version="$4"
-
-if [ -z "$distroot" ] || [ -z "$distname" ] || [ -z "$outpath" ] || [ -z "$version" ]; then
-	die "usage: dist_get <distroot> <distname> <outpath> <version>"
-fi
-
-case $version in
-	v*)
-		# correct input
-		;;
-	*)
-		echo "invalid version '$version'" >&2
-		die "versions must begin with 'v', for example: v0.4.0"
-		;;
-esac
-
-# TODO: don't depend on the go tool being installed to detect this
-goenv=$(get_go_vars) || die "could not get go env vars"
-
-case $goenv in
-	linux-*)
-		archive="tar.gz"
-		;;
-	darwin-*)
-		archive="tar.gz"
-		;;
-	windows-*)
-		archive="zip"
-		;;
-	freebsd-*)
-		archive="tar.gz"
-		;;
-	openbsd-*)
-		archive="tar.gz"
-		;;
-	*)
-		echo "unrecognized system environment: $goenv" >&2
-		die "currently only linux, darwin, windows and freebsd are supported by this script"
-esac
-
-
-mkdir -p bin/tmp
-
-url=$(mkurl "$distroot" "$distname" "$version" "$archive")
-tmpfi="bin/tmp/$distname.$archive"
-
-download "$url" "$tmpfi"
-if [ $? -ne 0 ]; then
-	die "failed to download $url to $tmpfi"
-fi
-
-unarchive "$archive" "$tmpfi" "$outpath" "$distname"
-if [ $? -ne 0 ]; then
-	die "failed to extract archive $tmpfi"
-fi
@@ -13,6 +13,10 @@ import (
 )

 func BuiltinBootstrap() ([]peer.AddrInfo, error) {
+	if DisableBuiltinAssets {
+		return nil, nil
+	}
+
 	var out []peer.AddrInfo

 	b := rice.MustFindBox("bootstrap")
@@ -34,3 +38,12 @@ func BuiltinBootstrap() ([]peer.AddrInfo, error) {
 	})
 	return out, err
 }
+
+func DrandBootstrap() ([]peer.AddrInfo, error) {
+	addrs := []string{
+		"/dnsaddr/pl-eu.testnet.drand.sh/",
+		"/dnsaddr/pl-us.testnet.drand.sh/",
+		"/dnsaddr/pl-sin.testnet.drand.sh/",
+	}
+	return addrutil.ParseAddresses(context.TODO(), addrs)
+}
@@ -1,6 +1,12 @@
-/dns4/lotus-bootstrap-0.sin.fil-test.net/tcp/1347/p2p/12D3KooWLZs8BWtEzRTYET4yR4jzDtPamaA1YsyPQJq6cf2RfxBD
-/dns4/lotus-bootstrap-1.sin.fil-test.net/tcp/1347/p2p/12D3KooWGvrgjWw4Yqo4AFWqYp4g37FpUvUCQBkNWudZVSwR9tY1
-/dns4/lotus-bootstrap-0.fra.fil-test.net/tcp/1347/p2p/12D3KooWSfNcrD1cs5Cj5eSHbK6nHCqJLffAuPqvRMBRgvUdqQhX
-/dns4/lotus-bootstrap-1.fra.fil-test.net/tcp/1347/p2p/12D3KooWNkXyVPspUnrHUiSC3VJPMcXvHuNdy3BTCLTPPnDgwwTT
-/dns4/lotus-bootstrap-0.dfw.fil-test.net/tcp/1347/p2p/12D3KooWSgJWJZK8LTRtCWzPa5FQheCFJjHpficVYgEQWeimcqCu
-/dns4/lotus-bootstrap-1.dfw.fil-test.net/tcp/1347/p2p/12D3KooWFPaC4dyGpbNXCpVHjZucdJnDwmv4ng9tponPx5GrzJkT
+/dns4/bootstrap-0-sin.fil-test.net/tcp/1347/p2p/12D3KooWPdUquftaQvoQEtEdsRBAhwD6jopbF2oweVTzR59VbHEd
+/ip4/86.109.15.57/tcp/1347/p2p/12D3KooWPdUquftaQvoQEtEdsRBAhwD6jopbF2oweVTzR59VbHEd
+/dns4/bootstrap-0-dfw.fil-test.net/tcp/1347/p2p/12D3KooWQSCkHCzosEyrh8FgYfLejKgEPM5VB6qWzZE3yDAuXn8d
+/ip4/139.178.84.45/tcp/1347/p2p/12D3KooWQSCkHCzosEyrh8FgYfLejKgEPM5VB6qWzZE3yDAuXn8d
+/dns4/bootstrap-0-fra.fil-test.net/tcp/1347/p2p/12D3KooWEXN2eQmoyqnNjde9PBAQfQLHN67jcEdWU6JougWrgXJK
+/ip4/136.144.49.17/tcp/1347/p2p/12D3KooWEXN2eQmoyqnNjde9PBAQfQLHN67jcEdWU6JougWrgXJK
+/dns4/bootstrap-1-sin.fil-test.net/tcp/1347/p2p/12D3KooWLmJkZd33mJhjg5RrpJ6NFep9SNLXWc4uVngV4TXKwzYw
+/ip4/86.109.15.123/tcp/1347/p2p/12D3KooWLmJkZd33mJhjg5RrpJ6NFep9SNLXWc4uVngV4TXKwzYw
+/dns4/bootstrap-1-dfw.fil-test.net/tcp/1347/p2p/12D3KooWGXLHjiz6pTRu7x2pkgTVCoxcCiVxcNLpMnWcJ3JiNEy5
+/ip4/139.178.86.3/tcp/1347/p2p/12D3KooWGXLHjiz6pTRu7x2pkgTVCoxcCiVxcNLpMnWcJ3JiNEy5
+/dns4/bootstrap-1-fra.fil-test.net/tcp/1347/p2p/12D3KooW9szZmKttS9A1FafH3Zc2pxKwwmvCWCGKkRP4KmbhhC4R
+/ip4/136.144.49.131/tcp/1347/p2p/12D3KooW9szZmKttS9A1FafH3Zc2pxKwwmvCWCGKkRP4KmbhhC4R
@@ -0,0 +1,15 @@
+package build
+
+// DisableBuiltinAssets disables the resolution of go.rice boxes that store
+// built-in assets, such as proof parameters, bootstrap peers, genesis blocks,
+// etc.
+//
+// When this value is set to true, it is expected that the user will
+// provide any such configurations through the Lotus API itself.
+//
+// This is useful when you're using Lotus as a library, such as to orchestrate
+// test scenarios, or for other purposes where you don't need to use the
+// defaults shipped with the binary.
+//
+// For this flag to be effective, it must be enabled _before_ instantiating Lotus.
+var DisableBuiltinAssets = false
@@ -1,9 +1 @@
 package build
-
-const ForkBlizzardHeight = 6288
-
-const ForkFrigidHeight = 7950
-
-const ForkBootyBayHeight = 11000
-
-const ForkMissingSnowballs = 34000
@@ -2,6 +2,6 @@ package build

 import rice "github.com/GeertJohan/go.rice"

-func ParametersJson() []byte {
+func ParametersJSON() []byte {
 	return rice.MustFindBox("proof-params").MustBytes("parameters.json")
 }
@@ -0,0 +1,34 @@
+// +build debug 2k
+
+package build
+
+import (
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+	"github.com/filecoin-project/specs-actors/actors/builtin/verifreg"
+)
+
+func init() {
+	power.ConsensusMinerMinPower = big.NewInt(2048)
+	miner.SupportedProofTypes = map[abi.RegisteredSealProof]struct{}{
+		abi.RegisteredSealProof_StackedDrg2KiBV1: {},
+	}
+	verifreg.MinVerifiedDealSize = big.NewInt(256)
+
+	BuildType |= Build2k
+}
+
+const BlockDelaySecs = uint64(2)
+
+const PropagationDelaySecs = uint64(3)
+
+// SlashablePowerDelay is the number of epochs after ElectionPeriodStart, after
+// which the miner is slashed
+//
+// Epochs
+const SlashablePowerDelay = 20
+
+// Epochs
+const InteractivePoRepConfidence = 6
@@ -4,32 +4,7 @@ package build

 func init() {
 	InsecurePoStValidation = true
+	BuildType |= BuildDebug
 }

-var SectorSizes = []uint64{1024}
-
-// Seconds
-const BlockDelay = 6
-
-const PropagationDelay = 3
-
-// FallbackPoStDelay is the number of epochs the miner needs to wait after
-//  ElectionPeriodStart before starting fallback post computation
-//
-// Epochs
-const FallbackPoStDelay = 10
-
-// SlashablePowerDelay is the number of epochs after ElectionPeriodStart, after
-// which the miner is slashed
-//
-// Epochs
-const SlashablePowerDelay = 20
-
-// Epochs
-const InteractivePoRepDelay = 2
-
-// Epochs
-const InteractivePoRepConfidence = 6
-
-// Bytes
-var MinimumMinerPower uint64 = 2 << 10 // 2KiB
+// NOTE: Also includes settings from params_2k
@@ -1,110 +0,0 @@
-package build
-
-import (
-	"math/big"
-)
-
-// Core network constants
-
-// /////
-// Storage
-
-const UnixfsChunkSize uint64 = 1 << 20
-const UnixfsLinksPerLevel = 1024
-
-func SupportedSectorSize(ssize uint64) bool {
-	for _, ss := range SectorSizes {
-		if ssize == ss {
-			return true
-		}
-	}
-	return false
-}
-
-const SectorChallengeRatioDiv = 25
-
-// /////
-// Payments
-
-// Epochs
-const PaymentChannelClosingDelay = 6 * 60 * 60 / BlockDelay // six hours
-
-// /////
-// Consensus / Network
-
-// Seconds
-const AllowableClockDrift = 1
-
-// Epochs
-const ForkLengthThreshold = Finality
-
-// Blocks (e)
-const BlocksPerEpoch = 5
-
-// Epochs
-const Finality = 500
-
-// constants for Weight calculation
-// The ratio of weight contributed by short-term vs long-term factors in a given round
-const WRatioNum = int64(1)
-const WRatioDen = 2
-
-// /////
-// Proofs
-
-// Epochs
-const SealRandomnessLookback = Finality
-
-// Epochs
-const SealRandomnessLookbackLimit = SealRandomnessLookback + 2000
-
-// Maximum lookback that randomness can be sourced from for a seal proof submission
-const MaxSealLookback = SealRandomnessLookbackLimit + 2000
-
-// /////
-// Mining
-
-// Epochs
-const EcRandomnessLookback = 300
-
-const PowerCollateralProportion = 5
-const PerCapitaCollateralProportion = 1
-const CollateralPrecision = 1000
-
-// /////
-// Devnet settings
-
-const TotalFilecoin = 2_000_000_000
-const MiningRewardTotal = 1_400_000_000
-
-const InitialRewardStr = "153856861913558700202"
-
-var InitialReward *big.Int
-
-const FilecoinPrecision = 1_000_000_000_000_000_000
-
-// TODO: Move other important consts here
-
-func init() {
-	InitialReward = new(big.Int)
-
-	var ok bool
-	InitialReward, ok = InitialReward.
-		SetString(InitialRewardStr, 10)
-	if !ok {
-		panic("could not parse InitialRewardStr")
-	}
-}
-
-// Sync
-const BadBlockCacheSize = 1 << 15
-
-// assuming 4000 messages per round, this lets us not lose any messages across a
-// 10 block reorg.
-const BlsSignatureCacheSize = 40000
-
-// ///////
-// Limits
-
-const BlockMessageLimit = 512
-const MinerMaxSectors = 1 << 48
@@ -0,0 +1,38 @@
+package build
+
+import (
+	"sort"
+
+	"github.com/libp2p/go-libp2p-core/protocol"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
+)
+
+func DefaultSectorSize() abi.SectorSize {
+	szs := make([]abi.SectorSize, 0, len(miner.SupportedProofTypes))
+	for spt := range miner.SupportedProofTypes {
+		ss, err := spt.SectorSize()
+		if err != nil {
+			panic(err)
+		}
+
+		szs = append(szs, ss)
+	}
+
+	sort.Slice(szs, func(i, j int) bool {
+		return szs[i] < szs[j]
+	})
+
+	return szs[0]
+}
+
+// Core network constants
+
+func BlocksTopic(netName dtypes.NetworkName) string   { return "/fil/blocks/" + string(netName) }
+func MessagesTopic(netName dtypes.NetworkName) string { return "/fil/msgs/" + string(netName) }
+func DhtProtocolName(netName dtypes.NetworkName) protocol.ID {
+	return protocol.ID("/fil/kad/" + string(netName))
+}
@@ -0,0 +1,103 @@
+// +build !testground
+
+package build
+
+import (
+	"math/big"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
+)
+
+// /////
+// Storage
+
+const UnixfsChunkSize uint64 = 1 << 20
+const UnixfsLinksPerLevel = 1024
+
+// /////
+// Consensus / Network
+
+const AllowableClockDriftSecs = uint64(1)
+
+// Epochs
+const ForkLengthThreshold = Finality
+
+// Blocks (e)
+var BlocksPerEpoch = uint64(builtin.ExpectedLeadersPerEpoch)
+
+// Epochs
+const Finality = miner.ChainFinalityish
+const MessageConfidence = uint64(5)
+
+// constants for Weight calculation
+// The ratio of weight contributed by short-term vs long-term factors in a given round
+const WRatioNum = int64(1)
+const WRatioDen = uint64(2)
+
+// /////
+// Proofs
+
+// Epochs
+const SealRandomnessLookback = Finality
+
+// Epochs
+const SealRandomnessLookbackLimit = SealRandomnessLookback + 2000 // TODO: Get from spec specs-actors
+
+// Maximum lookback that randomness can be sourced from for a seal proof submission
+const MaxSealLookback = SealRandomnessLookbackLimit + 2000 // TODO: Get from specs-actors
+
+// /////
+// Mining
+
+// Epochs
+const TicketRandomnessLookback = abi.ChainEpoch(1)
+
+const WinningPoStSectorSetLookback = abi.ChainEpoch(10)
+
+// /////
+// Devnet settings
+
+const TotalFilecoin = uint64(2_000_000_000)
+const MiningRewardTotal = uint64(1_400_000_000)
+
+const FilecoinPrecision = uint64(1_000_000_000_000_000_000)
+
+var InitialRewardBalance *big.Int
+
+// TODO: Move other important consts here
+
+func init() {
+	InitialRewardBalance = big.NewInt(int64(MiningRewardTotal))
+	InitialRewardBalance = InitialRewardBalance.Mul(InitialRewardBalance, big.NewInt(int64(FilecoinPrecision)))
+}
+
+// Sync
+const BadBlockCacheSize = 1 << 15
+
+// assuming 4000 messages per round, this lets us not lose any messages across a
+// 10 block reorg.
+const BlsSignatureCacheSize = 40000
+
+// Size of signature verification cache
+// 32k keeps the cache around 10MB in size, max
+const VerifSigCacheSize = 32000
+
+// ///////
+// Limits
+
+// TODO: If this is gonna stay, it should move to specs-actors
+const BlockMessageLimit = 512
+const BlockGasLimit = 100_000_000_000
+
+var DrandConfig = dtypes.DrandConfig{
+	Servers: []string{
+		"https://pl-eu.testnet.drand.sh",
+		"https://pl-us.testnet.drand.sh",
+		"https://pl-sin.testnet.drand.sh",
+	},
+	ChainInfoJSON: `{"public_key":"922a2e93828ff83345bae533f5172669a26c02dc76d6bf59c80892e12ab1455c229211886f35bb56af6d5bea981024df","period":25,"genesis_time":1590445175,"hash":"138a324aa6540f93d0dad002aa89454b1bec2b6e948682cde6bd4db40f4b7c9b"}`,
+}
@@ -0,0 +1,73 @@
+// +build testground
+
+// This file makes hardcoded parameters (const) configurable as vars.
+//
+// Its purpose is to unlock various degrees of flexibility and parametrization
+// when writing Testground plans for Lotus.
+//
+package build
+
+import (
+	"math/big"
+
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+)
+
+var (
+	UnixfsChunkSize     = uint64(1 << 20)
+	UnixfsLinksPerLevel = 1024
+
+	BlocksPerEpoch       = uint64(builtin.ExpectedLeadersPerEpoch)
+	BlockMessageLimit    = 512
+	BlockGasLimit        = int64(100_000_000_000)
+	BlockDelaySecs       = uint64(builtin.EpochDurationSeconds)
+	PropagationDelaySecs = uint64(6)
+
+	AllowableClockDriftSecs = uint64(1)
+
+	Finality            = miner.ChainFinalityish
+	ForkLengthThreshold = Finality
+
+	SlashablePowerDelay        = 20
+	InteractivePoRepConfidence = 6
+
+	MessageConfidence uint64 = 5
+
+	WRatioNum = int64(1)
+	WRatioDen = uint64(2)
+
+	BadBlockCacheSize     = 1 << 15
+	BlsSignatureCacheSize = 40000
+	VerifSigCacheSize     = 32000
+
+	SealRandomnessLookback      = Finality
+	SealRandomnessLookbackLimit = SealRandomnessLookback + 2000
+	MaxSealLookback             = SealRandomnessLookbackLimit + 2000
+
+	TicketRandomnessLookback     = abi.ChainEpoch(1)
+	WinningPoStSectorSetLookback = abi.ChainEpoch(10)
+
+	TotalFilecoin     uint64 = 2_000_000_000
+	MiningRewardTotal uint64 = 1_400_000_000
+
+	FilecoinPrecision uint64 = 1_000_000_000_000_000_000
+
+	InitialRewardBalance = func() *big.Int {
+		v := big.NewInt(int64(MiningRewardTotal))
+		v = v.Mul(v, big.NewInt(int64(FilecoinPrecision)))
+		return v
+	}()
+
+	DrandConfig = dtypes.DrandConfig{
+		Servers: []string{
+			"https://pl-eu.testnet.drand.sh",
+			"https://pl-us.testnet.drand.sh",
+			"https://pl-sin.testnet.drand.sh",
+		},
+		ChainInfoJSON: `{"public_key":"922a2e93828ff83345bae533f5172669a26c02dc76d6bf59c80892e12ab1455c229211886f35bb56af6d5bea981024df","period":25,"genesis_time":1590445175,"hash":"138a324aa6540f93d0dad002aa89454b1bec2b6e948682cde6bd4db40f4b7c9b"}`,
+	}
+)
@@ -1,33 +1,25 @@
 // +build !debug
+// +build !2k
+// +build !testground

 package build

-var SectorSizes = []uint64{
-	32 << 30,
+import (
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+)
+
+func init() {
+	power.ConsensusMinerMinPower = big.NewInt(1024 << 30)
+	miner.SupportedProofTypes = map[abi.RegisteredSealProof]struct{}{
+		abi.RegisteredSealProof_StackedDrg32GiBV1: {},
+		abi.RegisteredSealProof_StackedDrg64GiBV1: {},
+	}
 }

-// Seconds
-const BlockDelay = 45
+const BlockDelaySecs = uint64(builtin.EpochDurationSeconds)

-const PropagationDelay = 6
-
-// FallbackPoStDelay is the number of epochs the miner needs to wait after
-//  ElectionPeriodStart before starting fallback post computation
-//
-// Epochs
-const FallbackPoStDelay = 30
-
-// SlashablePowerDelay is the number of epochs after ElectionPeriodStart, after
-// which the miner is slashed
-//
-// Epochs
-const SlashablePowerDelay = 200
-
-// Epochs
-const InteractivePoRepDelay = 8
-
-// Epochs
-const InteractivePoRepConfidence = 6
-
-// Bytes
-var MinimumMinerPower uint64 = 512 << 30 // 512GB
+const PropagationDelaySecs = uint64(6)
@@ -1,103 +1,152 @@
 {
-  "v20-proof-of-spacetime-election-5f585aca354eb68e411c8582ed0efd800792430e4e76d73468c4fc03f1a8d6d2.params": {
-    "cid": "QmX7tYeNPWae2fjZ3Am6GB9dmHvLqvoz8dKo3PR98VYxH9",
-    "digest": "39a9edec3355516674f0d12b926be493",
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-0170db1f394b35d995252228ee359194b13199d259380541dc529fb0099096b0.params": {
+    "cid": "QmeDRyxek34F1H6xJY6AkFdWvPsy5F6dKTrebV3ZtWT4ky",
+    "digest": "f5827f2d8801c62c831e0f972f6dc8bb",
+    "sector_size": 2048
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-0170db1f394b35d995252228ee359194b13199d259380541dc529fb0099096b0.vk": {
+    "cid": "QmUw1ZmG4BBbX19MsbH3zAEGKUc42iFJc5ZAyomDHeJTsA",
+    "digest": "398fecdb4b2de445125852bc3c080b35",
+    "sector_size": 2048
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-0cfb4f178bbb71cf2ecfcd42accce558b27199ab4fb59cb78f2483fe21ef36d9.params": {
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+    "digest": "2b6d2972ac9e862e8134d98fb695b0c5",
+    "sector_size": 536870912
+  },
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+    "cid": "QmQaQmTXX995Akd66ggtJY5bNx6Gkxk8P34JTdMMq8393G",
+    "digest": "3688c9eb256b7b17f411dad78d5ef74a",
+    "sector_size": 536870912
+  },
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+    "cid": "QmfEYTMSkwGJTumQx26iKXGNKiYh3mmAC4SkdybZpJCj5p",
+    "digest": "09bff16aed893349d94485cfae366a9c",
+    "sector_size": 2048
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-3ea05428c9d11689f23529cde32fd30aabd50f7d2c93657c1d3650bca3e8ea9e.vk": {
+    "cid": "QmP4ThPieSUJyRanjibWpT5R5cCMzMAU4j8Y7kBn7CSW1Q",
+    "digest": "142f2f7e8f1b1779290315cabfd2c803",
+    "sector_size": 2048
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-50c7368dea9593ed0989e70974d28024efa9d156d585b7eea1be22b2e753f331.params": {
+    "cid": "QmcAixrHsz29DgvtZiMc2kQjvPRvWxYUp36QYmRDZbmREm",
+    "digest": "8f987f64d434365562180b96ec12e299",
+    "sector_size": 8388608
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-50c7368dea9593ed0989e70974d28024efa9d156d585b7eea1be22b2e753f331.vk": {
+    "cid": "QmT4iFnbL6r4txS5PXsiV7NTzbhCxHy54PvdkJJGV2VFXb",
+    "digest": "94b6c24ac01924f4feeecedd16b5d77d",
+    "sector_size": 8388608
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-5294475db5237a2e83c3e52fd6c2b03859a1831d45ed08c4f35dbf9a803165a9.params": {
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+    "digest": "2c245fe8179839dd6c6cdea207c67ae8",
+    "sector_size": 8388608
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-5294475db5237a2e83c3e52fd6c2b03859a1831d45ed08c4f35dbf9a803165a9.vk": {
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+    "digest": "56ae47bfda53bb8d22981ed8d8d27d72",
+    "sector_size": 8388608
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-7d739b8cf60f1b0709eeebee7730e297683552e4b69cab6984ec0285663c5781.params": {
+    "cid": "QmQCABxeTpdvXTyjDyk7nPBxkQzCh7MXfGztWnSXEPKMLW",
+    "digest": "7e6b2eb5ecbb11ac651ad66ebbb2075a",
+    "sector_size": 536870912
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-7d739b8cf60f1b0709eeebee7730e297683552e4b69cab6984ec0285663c5781.vk": {
+    "cid": "QmPBweyugh5Sx4umk8ULhgEGbjY8xmWLfU6M7EMpc8Mad6",
+    "digest": "94a8d9e25a9ab9674d339833664eba25",
+    "sector_size": 536870912
+  },
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-0-0377ded656c6f524f1618760bffe4e0a1c51d5a70c4509eedae8a27555733edc.params": {
+    "cid": "QmY5yax1E9KymBnCeHksE9Zi8NieZbmwcpoDGoabkeeb9h",
+    "digest": "c909ea9e3fe25ab9b391a64593afdbba",
    "sector_size": 34359738368
  },
-  "v20-proof-of-spacetime-election-5f585aca354eb68e411c8582ed0efd800792430e4e76d73468c4fc03f1a8d6d2.vk": {
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-    "digest": "0227ae7df4f2affe529ebafbbc7540ee",
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-0-0377ded656c6f524f1618760bffe4e0a1c51d5a70c4509eedae8a27555733edc.vk": {
+    "cid": "QmXnPo4yH5mwMguwrvqgRfduSttbmPrXtbBfbwU21wQWHt",
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-  "v20-proof-of-spacetime-election-bf872523641b1de33553db2a177df13e412d7b3b0103e6696ae0a1cf5d525259.vk": {
-    "cid": "QmZa5FX27XyiEXQQLQpHqtMJKLzrcY8wMuj3pxzmSimSyu",
-    "digest": "7f796d3a0f13499181e44b5eee0cc744",
-    "sector_size": 16777216
-  },
-  "v20-proof-of-spacetime-election-ffc3fb192364238b60977839d14e3154d4a98313e30d46694a12af54b6874975.params": {
-    "cid": "Qmbt2SWWAmMcYoY3DAiRDXA8fAuqdqRLWucJMSxYmzBCmN",
-    "digest": "151ae0ae183fc141e8c2bebc28e5cc10",
-    "sector_size": 268435456
-  },
-  "v20-proof-of-spacetime-election-ffc3fb192364238b60977839d14e3154d4a98313e30d46694a12af54b6874975.vk": {
-    "cid": "QmUxvPu4xdVmjMFihUKoYyEdXBqxsXkvmxRweU7KouWHji",
-    "digest": "95eb89588e9d1832aca044c3a13178af",
-    "sector_size": 268435456
-  },
-  "v20-stacked-proof-of-replication-117839dacd1ef31e5968a6fd13bcd6fa86638d85c40c9241a1d07c2a954eb89b.params": {
-    "cid": "QmQZe8eLo2xXbhSDxtyYZNqEjqjdcWGdADywECRvNEZQdX",
-    "digest": "fcd50e2e08a8560a6bb3418e883567ed",
-    "sector_size": 268435456
-  },
-  "v20-stacked-proof-of-replication-117839dacd1ef31e5968a6fd13bcd6fa86638d85c40c9241a1d07c2a954eb89b.vk": {
-    "cid": "Qme1hn6QT1covfoUFGDZkqoE1pMTax9FNW3nWWmTNqFe7y",
-    "digest": "872e244d86499fd659082e3bcf3f13e7",
-    "sector_size": 268435456
-  },
-  "v20-stacked-proof-of-replication-b46f3a1051afbb67f70aae7082da95def62eee943662f3e1bf69837fb08aaae4.params": {
-    "cid": "QmSfrPDC9jwY4MKrjzhCqDBBAG44wSDM8oE5NuDwWSh2xN",
-    "digest": "0a338b941c5f17946340de5fc95cab30",
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-0-559e581f022bb4e4ec6e719e563bf0e026ad6de42e56c18714a2c692b1b88d7e.params": {
+    "cid": "QmZtzzPWwmZEgR7MSMvXRbt9KVK8k4XZ5RLWHybHJW9SdE",
+    "digest": "a2844f0703f186d143a06146a04577d8",
    "sector_size": 34359738368
  },
-  "v20-stacked-proof-of-replication-b46f3a1051afbb67f70aae7082da95def62eee943662f3e1bf69837fb08aaae4.vk": {
-    "cid": "QmTDGynCmnbaZNBP3Bv3F3duC3ecKRubCKeMUiQQZYbGpF",
-    "digest": "c752e070a6b7aa8b79aa661a6b600b55",
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-0-559e581f022bb4e4ec6e719e563bf0e026ad6de42e56c18714a2c692b1b88d7e.vk": {
+    "cid": "QmWxEA7EdQCUJTzjNpxg5XTF45D2uVyYnN1QRUb5TRYU8M",
+    "digest": "2306247a1e616dbe07f01b88196c2044",
    "sector_size": 34359738368
  },
-  "v20-stacked-proof-of-replication-e71093863cadc71de61f38311ee45816633973bbf34849316b147f8d2e66f199.params": {
-    "cid": "QmXjSSnMUnc7EjQBYtTHhvLU3kXJTbUyhVhJRSTRehh186",
-    "digest": "efa407fd09202dffd15799a8518e73d3",
-    "sector_size": 1024
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-2-2627e4006b67f99cef990c0a47d5426cb7ab0a0ad58fc1061547bf2d28b09def.params": {
+    "cid": "QmP676KwuvyF9Y64uJnXvLtvD1xcuWQ6wD23RzYtQ6dd4f",
+    "digest": "215b1c667a4f46a1d0178338df568615",
+    "sector_size": 68719476736
  },
-  "v20-stacked-proof-of-replication-e71093863cadc71de61f38311ee45816633973bbf34849316b147f8d2e66f199.vk": {
-    "cid": "QmYHW3zhQouDP4okFbXSsRMcZ8bokKGvzxqbv7ZrunPMiG",
-    "digest": "b2f09a0ccb62da28c890d5b881c8dcd2",
-    "sector_size": 1024
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-2-2627e4006b67f99cef990c0a47d5426cb7ab0a0ad58fc1061547bf2d28b09def.vk": {
+    "cid": "QmPvPwbJtcSGyqB1rQJhSF5yvFbX9ZBSsHVej5F8JUyHUJ",
+    "digest": "0c9c423b28b1455fcbc329a1045fd4dd",
+    "sector_size": 68719476736
  },
-  "v20-stacked-proof-of-replication-e99a585174b6a45b254ba4780d72c89ad808c305c6d11711009ade4f39dba8e9.params": {
-    "cid": "QmUhyfNeLb32LfSkjsUwTFYLXQGMj6JQ8daff4DdVMt79q",
-    "digest": "b53c1916a63839ec345aa2224e9198b7",
-    "sector_size": 1073741824
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-2-b62098629d07946e9028127e70295ed996fe3ed25b0f9f88eb610a0ab4385a3c.params": {
+    "cid": "QmUxPQfvckzm1t6MFRdDZ1fDK5UJzAjK7pTZ97cwyachdr",
+    "digest": "965132f51ae445b0e6d32692b7561995",
+    "sector_size": 68719476736
  },
-  "v20-stacked-proof-of-replication-e99a585174b6a45b254ba4780d72c89ad808c305c6d11711009ade4f39dba8e9.vk": {
-    "cid": "QmWReGfbuoozNErbskmFvqV4q36BY6F2WWb4cVFc3zoYkA",
-    "digest": "20d58a3fae7343481f8298a2dd493dd7",
-    "sector_size": 1073741824
+  "v27-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-8-2-b62098629d07946e9028127e70295ed996fe3ed25b0f9f88eb610a0ab4385a3c.vk": {
+    "cid": "QmTxq2EBnQWb5R8tS4MHdchj4vNfLYGoSXxwJFvs5xgW4K",
+    "digest": "fc8c3d26e0e56373ad96cb41520d55a6",
+    "sector_size": 68719476736
  },
-  "v20-stacked-proof-of-replication-f571ee2386f4c65a68e802747f2d78691006fc81a67971c4d9641403fffece16.params": {
-    "cid": "QmSAHu14Pe8iav6BYCt9XkpHJ73XM7tcpY4d9JK9BST9HU",
-    "digest": "7698426202c7e07b26ef056d31485b3a",
-    "sector_size": 16777216
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-032d3138d22506ec0082ed72b2dcba18df18477904e35bafee82b3793b06832f.params": {
+    "cid": "QmRjgZHERgqGoRagR788Kh6ybi26csVYa8mqbqhmZm57Jx",
+    "digest": "cfc7b0897d1eee48c586f7beb89e67f7",
+    "sector_size": 2048
  },
-  "v20-stacked-proof-of-replication-f571ee2386f4c65a68e802747f2d78691006fc81a67971c4d9641403fffece16.vk": {
-    "cid": "QmaKtFLShnhMGVn7P9UsHjkgqtqRFSwCStqqykBN7u8dax",
-    "digest": "834408e5c3fce6ec5d1bf64e64cee94e",
-    "sector_size": 16777216
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-032d3138d22506ec0082ed72b2dcba18df18477904e35bafee82b3793b06832f.vk": {
+    "cid": "QmNjvnvFP7KgovHUddULoB19fBHT81iz7NcUbzEHZUUPsm",
+    "digest": "fb59bd061c987eac7068008c44de346b",
+    "sector_size": 2048
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-6babf46ce344ae495d558e7770a585b2382d54f225af8ed0397b8be7c3fcd472.params": {
+    "cid": "QmTpRPBA4dt8fgGpcVzi4L1KA1U2eBHCE8WVmS2GUygMvT",
+    "digest": "36d465915b0afbf96bd08e7915e00952",
+    "sector_size": 536870912
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-6babf46ce344ae495d558e7770a585b2382d54f225af8ed0397b8be7c3fcd472.vk": {
+    "cid": "QmRzDyVfQCLsxspoVsed5bcQRsG6KiktngJfcNBL3TJPZe",
+    "digest": "99d16df0eb6a7e227a4f4570c4f6b6f1",
+    "sector_size": 536870912
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-ecd683648512ab1765faa2a5f14bab48f676e633467f0aa8aad4b55dcb0652bb.params": {
+    "cid": "QmV8ZjTSGzDUWmFvsq9NSyPBR7eDDUcvCPNgj2yE7HMAFu",
+    "digest": "34f3ddf1d1c9f41c0cd73b91e8b4bc27",
+    "sector_size": 8388608
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-0-0-sha256_hasher-ecd683648512ab1765faa2a5f14bab48f676e633467f0aa8aad4b55dcb0652bb.vk": {
+    "cid": "QmTa3VbjTiqJWU6r4WKayaQrUaaBsrpp5UDqYvPDd2C5hs",
+    "digest": "ec62d59651daa5631d3d1e9c782dd940",
+    "sector_size": 8388608
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-8-0-sha256_hasher-82a357d2f2ca81dc61bb45f4a762807aedee1b0a53fd6c4e77b46a01bfef7820.params": {
+    "cid": "Qmf8ngfArxrv9tFWDqBcNegdBMymvuakwyHKd1pbW3pbsb",
+    "digest": "a16d6f4c6424fb280236739f84b24f97",
+    "sector_size": 34359738368
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-8-0-sha256_hasher-82a357d2f2ca81dc61bb45f4a762807aedee1b0a53fd6c4e77b46a01bfef7820.vk": {
+    "cid": "QmfQgVFerArJ6Jupwyc9tKjLD9n1J9ajLHBdpY465tRM7M",
+    "digest": "7a139d82b8a02e35279d657e197f5c1f",
+    "sector_size": 34359738368
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-8-2-sha256_hasher-96f1b4a04c5c51e4759bbf224bbc2ef5a42c7100f16ec0637123f16a845ddfb2.params": {
+    "cid": "QmfDha8271nXJn14Aq3qQeghjMBWbs6HNSGa6VuzCVk4TW",
+    "digest": "5d3cd3f107a3bea8a96d1189efd2965c",
+    "sector_size": 68719476736
+  },
+  "v27-stacked-proof-of-replication-merkletree-poseidon_hasher-8-8-2-sha256_hasher-96f1b4a04c5c51e4759bbf224bbc2ef5a42c7100f16ec0637123f16a845ddfb2.vk": {
+    "cid": "QmRVtTtiFzHJTHurYzaCvetGAchux9cktixT4aGHthN6Zt",
+    "digest": "62c366405404e60f171e661492740b1c",
+    "sector_size": 68719476736
  }
-}
-
+}
@@ -3,11 +3,33 @@ package build
 import "fmt"

 var CurrentCommit string
+var BuildType int
+
+const (
+	BuildDefault = 0
+	Build2k      = 0x1
+	BuildDebug   = 0x3
+)
+
+func buildType() string {
+	switch BuildType {
+	case BuildDefault:
+		return ""
+	case BuildDebug:
+		return "+debug"
+	case Build2k:
+		return "+2k"
+	default:
+		return "+huh?"
+	}
+}

 // BuildVersion is the local build version, set by build system
-const BuildVersion = "0.2.8"
+const BuildVersion = "0.4.1"

-var UserVersion = BuildVersion + CurrentCommit
+func UserVersion() string {
+	return BuildVersion + buildType() + CurrentCommit
+}

 type Version uint32

@@ -31,8 +53,9 @@ func (ve Version) EqMajorMinor(v2 Version) bool {
 }

 // APIVersion is a semver version of the rpc api exposed
-var APIVersion Version = newVer(0, 1, 6)
+var APIVersion Version = newVer(0, 6, 0)

+//nolint:varcheck,deadcode
 const (
 	majorMask = 0xff0000
 	minorMask = 0xffff00
@@ -1,48 +0,0 @@
-package actors
-
-import (
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-)
-
-type CronActor struct{}
-
-type callTuple struct {
-	addr   address.Address
-	method uint64
-}
-
-var CronActors = []callTuple{
-	{StoragePowerAddress, SPAMethods.CheckProofSubmissions},
-}
-
-type CronActorState struct{}
-
-type cAMethods struct {
-	EpochTick uint64
-}
-
-var CAMethods = cAMethods{2}
-
-func (ca CronActor) Exports() []interface{} {
-	return []interface{}{
-		1: nil,
-		2: ca.EpochTick,
-	}
-}
-
-func (ca CronActor) EpochTick(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	if vmctx.Message().From != CronAddress {
-		return nil, aerrors.New(1, "EpochTick is only callable as a part of tipset state computation")
-	}
-
-	for _, call := range CronActors {
-		_, err := vmctx.Send(call.addr, call.method, types.NewInt(0), nil)
-		if err != nil {
-			return nil, err // todo: this very bad?
-		}
-	}
-
-	return nil, nil
-}
@@ -1,239 +0,0 @@
-package actors
-
-import (
-	"bytes"
-	"context"
-	"encoding/binary"
-	"fmt"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-	cbg "github.com/whyrusleeping/cbor-gen"
-	"golang.org/x/xerrors"
-
-	"github.com/ipfs/go-cid"
-	"github.com/ipfs/go-hamt-ipld"
-	cbor "github.com/ipfs/go-ipld-cbor"
-	logging "github.com/ipfs/go-log/v2"
-	mh "github.com/multiformats/go-multihash"
-)
-
-var log = logging.Logger("actors")
-
-var EmptyCBOR cid.Cid
-
-const (
-	GasCreateActor = 100
-)
-
-var BuiltInActors map[cid.Cid]bool
-
-func init() {
-
-	n, err := cbor.WrapObject(map[string]string{}, mh.SHA2_256, -1)
-	if err != nil {
-		panic(err) // ok
-	}
-
-	EmptyCBOR = n.Cid()
-}
-
-type InitActor struct{}
-
-type InitActorState struct {
-	AddressMap cid.Cid
-
-	NextID uint64
-}
-
-type iAMethods struct {
-	Exec uint64
-}
-
-var IAMethods = iAMethods{2}
-
-func (ia InitActor) Exports() []interface{} {
-	return []interface{}{
-		1: nil,
-		2: ia.Exec,
-	}
-}
-
-type ExecParams struct {
-	Code   cid.Cid
-	Params []byte
-}
-
-func CreateExecParams(act cid.Cid, obj cbg.CBORMarshaler) ([]byte, aerrors.ActorError) {
-	encparams, err := SerializeParams(obj)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "creating ExecParams")
-	}
-
-	return SerializeParams(&ExecParams{
-		Code:   act,
-		Params: encparams,
-	})
-}
-
-func (ia InitActor) Exec(act *types.Actor, vmctx types.VMContext, p *ExecParams) ([]byte, aerrors.ActorError) {
-	beginState := vmctx.Storage().GetHead()
-
-	var self InitActorState
-	if err := vmctx.Storage().Get(beginState, &self); err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.ChargeGas(GasCreateActor); err != nil {
-		return nil, aerrors.Wrap(err, "run out of gas")
-	}
-
-	// Make sure that only the actors defined in the spec can be launched.
-	if !IsBuiltinActor(p.Code) {
-		return nil, aerrors.New(1,
-			"cannot launch actor instance that is not a builtin actor")
-	}
-
-	// Ensure that singletons can be only launched once.
-	// TODO: do we want to enforce this? If so how should actors be marked as such?
-	if IsSingletonActor(p.Code) {
-		return nil, aerrors.New(1, "cannot launch another actor of this type")
-	}
-
-	// This generates a unique address for this actor that is stable across message
-	// reordering
-	creator := vmctx.Message().From
-	nonce := vmctx.Message().Nonce
-	addr, err := ComputeActorAddress(creator, nonce)
-	if err != nil {
-		return nil, err
-	}
-
-	// Set up the actor itself
-	actor := types.Actor{
-		Code:    p.Code,
-		Balance: types.NewInt(0),
-		Head:    EmptyCBOR,
-		Nonce:   0,
-	}
-
-	// The call to the actors constructor will set up the initial state
-	// from the given parameters, setting `actor.Head` to a new value when successful.
-	// TODO: can constructors fail?
-	//actor.Constructor(p.Params)
-
-	// Store the mapping of address to actor ID.
-	idAddr, nerr := self.AddActor(vmctx.Ipld(), addr)
-	if nerr != nil {
-		return nil, aerrors.Escalate(err, "adding new actor mapping")
-	}
-
-	// NOTE: This is a privileged call that only the init actor is allowed to make
-	// FIXME: Had to comment this  because state is not in interface
-	state, err := vmctx.StateTree()
-	if err != nil {
-		return nil, err
-	}
-
-	if err := state.SetActor(idAddr, &actor); err != nil {
-		if xerrors.Is(err, types.ErrActorNotFound) {
-			return nil, aerrors.Absorb(err, 1, "SetActor, actor not found")
-		}
-		return nil, aerrors.Escalate(err, "inserting new actor into state tree")
-	}
-
-	// '1' is reserved for constructor methods
-	_, err = vmctx.Send(idAddr, 1, vmctx.Message().Value, p.Params)
-	if err != nil {
-		return nil, err
-	}
-
-	c, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(beginState, c); err != nil {
-		return nil, err
-	}
-
-	return idAddr.Bytes(), nil
-}
-
-func IsBuiltinActor(code cid.Cid) bool {
-	return BuiltInActors[code]
-}
-
-func IsSingletonActor(code cid.Cid) bool {
-	return code == StoragePowerCodeCid || code == StorageMarketCodeCid || code == InitCodeCid || code == CronCodeCid
-}
-
-func (ias *InitActorState) AddActor(cst *hamt.CborIpldStore, addr address.Address) (address.Address, error) {
-	nid := ias.NextID
-
-	amap, err := hamt.LoadNode(context.TODO(), cst, ias.AddressMap)
-	if err != nil {
-		return address.Undef, err
-	}
-
-	if err := amap.Set(context.TODO(), string(addr.Bytes()), nid); err != nil {
-		return address.Undef, err
-	}
-
-	if err := amap.Flush(context.TODO()); err != nil {
-		return address.Undef, err
-	}
-
-	ncid, err := cst.Put(context.TODO(), amap)
-	if err != nil {
-		return address.Undef, err
-	}
-	ias.AddressMap = ncid
-	ias.NextID++
-
-	return NewIDAddress(nid)
-}
-
-func (ias *InitActorState) Lookup(cst *hamt.CborIpldStore, addr address.Address) (address.Address, error) {
-	amap, err := hamt.LoadNode(context.TODO(), cst, ias.AddressMap)
-	if err != nil {
-		return address.Undef, xerrors.Errorf("ias lookup failed loading hamt node: %w", err)
-	}
-
-	var val interface{}
-	err = amap.Find(context.TODO(), string(addr.Bytes()), &val)
-	if err != nil {
-		return address.Undef, xerrors.Errorf("ias lookup failed to do find: %w", err)
-	}
-
-	ival, ok := val.(uint64)
-	if !ok {
-		return address.Undef, fmt.Errorf("invalid value in init actor state, expected uint64, got %T", val)
-	}
-
-	return address.NewIDAddress(ival)
-}
-
-type AccountActorState struct {
-	Address address.Address
-}
-
-func ComputeActorAddress(creator address.Address, nonce uint64) (address.Address, ActorError) {
-	buf := new(bytes.Buffer)
-	_, err := buf.Write(creator.Bytes())
-	if err != nil {
-		return address.Undef, aerrors.Escalate(err, "could not write address")
-	}
-
-	err = binary.Write(buf, binary.BigEndian, nonce)
-	if err != nil {
-		return address.Undef, aerrors.Escalate(err, "could not write nonce")
-	}
-
-	addr, err := address.NewActorAddress(buf.Bytes())
-	if err != nil {
-		return address.Undef, aerrors.Escalate(err, "could not create address")
-	}
-	return addr, nil
-}
@@ -1,903 +0,0 @@
-package actors
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-
-	amt2 "github.com/filecoin-project/go-amt-ipld/v2"
-
-	"github.com/filecoin-project/go-sectorbuilder"
-	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-
-	"github.com/ipfs/go-cid"
-	cbor "github.com/ipfs/go-ipld-cbor"
-	cbg "github.com/whyrusleeping/cbor-gen"
-	"golang.org/x/xerrors"
-)
-
-type StorageMinerActor2 struct{}
-
-func (sma StorageMinerActor2) Exports() []interface{} {
-	return []interface{}{
-		1: sma.StorageMinerConstructor,
-		2: sma.PreCommitSector,
-		3: sma.ProveCommitSector,
-		4: sma.SubmitFallbackPoSt,
-		//5: sma.SlashStorageFault,
-		//6: sma.GetCurrentProvingSet,
-		//7:  sma.ArbitrateDeal,
-		//8:  sma.DePledge,
-		9:  sma.GetOwner,
-		10: sma.GetWorkerAddr,
-		11: withUpdates(
-			update{0, sma.GetPower},
-			update{build.ForkMissingSnowballs, sma.GetPower2},
-		), // FORK
-		12: sma.GetPeerID,
-		13: sma.GetSectorSize,
-		14: sma.UpdatePeerID,
-		//15: sma.ChangeWorker,
-		16: sma.IsSlashed,
-		17: sma.CheckMiner,
-		18: sma.DeclareFaults,
-		19: sma.SlashConsensusFault,
-		20: sma.SubmitElectionPoSt,
-	}
-}
-
-func (sma StorageMinerActor2) StorageMinerConstructor(act *types.Actor, vmctx types.VMContext, params *StorageMinerConstructorParams) ([]byte, ActorError) {
-	minerInfo := &MinerInfo{
-		Owner:      params.Owner,
-		Worker:     params.Worker,
-		PeerID:     params.PeerID,
-		SectorSize: params.SectorSize,
-	}
-
-	minfocid, err := vmctx.Storage().Put(minerInfo)
-	if err != nil {
-		return nil, err
-	}
-
-	var self StorageMinerActorState
-	sectors := amt2.NewAMT(types.WrapStorage(vmctx.Storage()))
-	scid, serr := sectors.Flush()
-	if serr != nil {
-		return nil, aerrors.HandleExternalError(serr, "initializing AMT")
-	}
-
-	self.Sectors = scid
-	self.ProvingSet = scid
-	self.Info = minfocid
-
-	storage := vmctx.Storage()
-	c, err := storage.Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := storage.Commit(EmptyCBOR, c); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) PreCommitSector(act *types.Actor, vmctx types.VMContext, params *SectorPreCommitInfo) ([]byte, ActorError) {
-
-	ctx := vmctx.Context()
-	oldstate, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	if params.SealEpoch >= vmctx.BlockHeight()+build.SealRandomnessLookback {
-		return nil, aerrors.Newf(1, "sector commitment must be based off past randomness (%d >= %d)", params.SealEpoch, vmctx.BlockHeight()+build.SealRandomnessLookback)
-	}
-
-	if vmctx.BlockHeight()-params.SealEpoch+build.SealRandomnessLookback > build.SealRandomnessLookbackLimit {
-		return nil, aerrors.Newf(2, "sector commitment must be recent enough (was %d)", vmctx.BlockHeight()-params.SealEpoch+build.SealRandomnessLookback)
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().From != mi.Worker {
-		return nil, aerrors.New(1, "not authorized to precommit sector for miner")
-	}
-
-	// make sure the miner isnt trying to submit a pre-existing sector
-	unique, err := SectorIsUnique(ctx, vmctx.Storage(), self.Sectors, params.SectorNumber)
-	if err != nil {
-		return nil, err
-	}
-	if !unique {
-		return nil, aerrors.New(3, "sector already committed!")
-	}
-
-	// Power of the miner after adding this sector
-	futurePower := types.BigAdd(self.Power, types.NewInt(mi.SectorSize))
-	collateralRequired := CollateralForPower(futurePower)
-
-	// TODO: grab from market?
-	if act.Balance.LessThan(collateralRequired) {
-		return nil, aerrors.New(4, "not enough collateral")
-	}
-
-	self.PreCommittedSectors[uintToStringKey(params.SectorNumber)] = &PreCommittedSector{
-		Info:          *params,
-		ReceivedEpoch: vmctx.BlockHeight(),
-	}
-
-	if len(self.PreCommittedSectors) > 4096 {
-		return nil, aerrors.New(5, "too many precommitted sectors")
-	}
-
-	nstate, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-	if err := vmctx.Storage().Commit(oldstate, nstate); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) ProveCommitSector(act *types.Actor, vmctx types.VMContext, params *SectorProveCommitInfo) ([]byte, ActorError) {
-	ctx := vmctx.Context()
-	oldstate, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().From != mi.Worker {
-		return nil, aerrors.New(1, "not authorized to submit sector proof for miner")
-	}
-
-	us, ok := self.PreCommittedSectors[uintToStringKey(params.SectorID)]
-	if !ok {
-		return nil, aerrors.New(1, "no pre-commitment found for sector")
-	}
-
-	if us.ReceivedEpoch+build.InteractivePoRepDelay >= vmctx.BlockHeight() {
-		return nil, aerrors.New(2, "too early for proof submission")
-	}
-
-	delete(self.PreCommittedSectors, uintToStringKey(params.SectorID))
-
-	// TODO: ensure normalization to ID address
-	maddr := vmctx.Message().To
-
-	if vmctx.BlockHeight()-us.Info.SealEpoch > build.MaxSealLookback {
-		return nil, aerrors.Newf(5, "source randomness for sector SealEpoch too far in past (epoch %d)", us.Info.SealEpoch)
-	}
-
-	if vmctx.BlockHeight()-us.ReceivedEpoch > build.MaxSealLookback {
-		return nil, aerrors.Newf(6, "source randomness for sector ReceivedEpoch too far in past (epoch %d)", us.ReceivedEpoch)
-	}
-
-	ticket, err := vmctx.GetRandomness(us.Info.SealEpoch - build.SealRandomnessLookback)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to get ticket randomness")
-	}
-
-	seed, err := vmctx.GetRandomness(us.ReceivedEpoch + build.InteractivePoRepDelay)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to get randomness for prove sector commitment")
-	}
-
-	enc, err := SerializeParams(&ComputeDataCommitmentParams{
-		DealIDs:    params.DealIDs,
-		SectorSize: mi.SectorSize,
-	})
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to serialize ComputeDataCommitmentParams")
-	}
-
-	commD, err := vmctx.Send(StorageMarketAddress, SMAMethods.ComputeDataCommitment, types.NewInt(0), enc)
-	if err != nil {
-		return nil, aerrors.Wrapf(err, "failed to compute data commitment (sector %d, deals: %v)", params.SectorID, params.DealIDs)
-	}
-
-	if ok, err := vmctx.Sys().ValidatePoRep(ctx, maddr, mi.SectorSize, commD, us.Info.CommR, ticket, params.Proof, seed, params.SectorID); err != nil {
-		return nil, err
-	} else if !ok {
-		return nil, aerrors.Newf(2, "porep proof was invalid (t:%x; s:%x(%d); p:%s)", ticket, seed, us.ReceivedEpoch+build.InteractivePoRepDelay, truncateHexPrint(params.Proof))
-	}
-
-	// Note: There must exist a unique index in the miner's sector set for each
-	// sector ID. The `faults`, `recovered`, and `done` parameters of the
-	// SubmitPoSt method express indices into this sector set.
-	nssroot, err := AddToSectorSet2(ctx, types.WrapStorage(vmctx.Storage()), self.Sectors, params.SectorID, us.Info.CommR, commD)
-	if err != nil {
-		return nil, err
-	}
-	self.Sectors = nssroot
-
-	// if miner is not mining, start their proving period now
-	// Note: As written here, every miners first PoSt will only be over one sector.
-	// We could set up a 'grace period' for starting mining that would allow miners
-	// to submit several sectors for their first proving period. Alternatively, we
-	// could simply make the 'PreCommitSector' call take multiple sectors at a time.
-	//
-	// Note: Proving period is a function of sector size; small sectors take less
-	// time to prove than large sectors do. Sector size is selected when pledging.
-	pss, lerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingSet)
-	if lerr != nil {
-		return nil, aerrors.HandleExternalError(lerr, "could not load proving set node")
-	}
-
-	if pss.Count == 0 && !self.Active {
-		self.ProvingSet = self.Sectors
-		// TODO: probably want to wait until the miner is above a certain
-		//  threshold before starting this
-		self.ElectionPeriodStart = vmctx.BlockHeight()
-	}
-
-	nstate, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-	if err := vmctx.Storage().Commit(oldstate, nstate); err != nil {
-		return nil, err
-	}
-
-	activateParams, err := SerializeParams(&ActivateStorageDealsParams{
-		Deals: params.DealIDs,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	_, err = vmctx.Send(StorageMarketAddress, SMAMethods.ActivateStorageDeals, types.NewInt(0), activateParams)
-	return nil, aerrors.Wrapf(err, "calling ActivateStorageDeals failed")
-}
-
-func (sma StorageMinerActor2) SubmitFallbackPoSt(act *types.Actor, vmctx types.VMContext, params *SubmitFallbackPoStParams) ([]byte, ActorError) {
-	oldstate, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().From != mi.Worker {
-		return nil, aerrors.New(1, "not authorized to submit post for miner")
-	}
-
-	/*
-		// TODO: handle fees
-		msgVal := vmctx.Message().Value
-		if msgVal.LessThan(feesRequired) {
-			return nil, aerrors.New(2, "not enough funds to pay post submission fees")
-		}
-
-		if msgVal.GreaterThan(feesRequired) {
-			_, err := vmctx.Send(vmctx.Message().From, 0,
-				types.BigSub(msgVal, feesRequired), nil)
-			if err != nil {
-				return nil, aerrors.Wrap(err, "could not refund excess fees")
-			}
-		}
-	*/
-
-	var seed [sectorbuilder.CommLen]byte
-	{
-		randHeight := self.ElectionPeriodStart + build.FallbackPoStDelay
-		if vmctx.BlockHeight() <= randHeight {
-			// TODO: spec, retcode
-			return nil, aerrors.Newf(1, "submit fallback PoSt called too early (%d < %d)", vmctx.BlockHeight(), randHeight)
-		}
-
-		rand, err := vmctx.GetRandomness(randHeight)
-
-		if err != nil {
-			return nil, aerrors.Wrap(err, "could not get randomness for PoST")
-		}
-		if len(rand) < len(seed) {
-			return nil, aerrors.Escalate(fmt.Errorf("randomness too small (%d < %d)",
-				len(rand), len(seed)), "improper randomness")
-		}
-		copy(seed[:], rand)
-	}
-
-	pss, lerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingSet)
-	if lerr != nil {
-		return nil, aerrors.HandleExternalError(lerr, "could not load proving set node")
-	}
-
-	ss, lerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Sectors)
-	if lerr != nil {
-		return nil, aerrors.HandleExternalError(lerr, "could not load proving set node")
-	}
-
-	faults, nerr := self.FaultSet.AllMap(2 * ss.Count)
-	if nerr != nil {
-		return nil, aerrors.Absorb(err, 5, "RLE+ invalid")
-	}
-
-	activeFaults := uint64(0)
-	var sectorInfos []types.PublicSectorInfo
-	if err := pss.ForEach(func(id uint64, v *cbg.Deferred) error {
-		if faults[id] {
-			activeFaults++
-			return nil
-		}
-
-		var comms [][]byte
-		if err := cbor.DecodeInto(v.Raw, &comms); err != nil {
-			return xerrors.New("could not decode comms")
-		}
-		si := types.PublicSectorInfo{
-			SectorID: id,
-		}
-		commR := comms[0]
-		if len(commR) != len(si.CommR) {
-			return xerrors.Errorf("commR length is wrong: %d", len(commR))
-		}
-		copy(si.CommR[:], commR)
-
-		sectorInfos = append(sectorInfos, si)
-
-		return nil
-	}); err != nil {
-		return nil, aerrors.Absorb(err, 3, "could not decode sectorset")
-	}
-
-	proverID := vmctx.Message().To // TODO: normalize to ID address
-
-	var candidates []types.Candidate
-	for _, t := range params.Candidates {
-		var partial [32]byte
-		copy(partial[:], t.Partial)
-		candidates = append(candidates, types.Candidate{
-			PartialTicket:        partial,
-			SectorID:             t.SectorID,
-			SectorChallengeIndex: t.ChallengeIndex,
-		})
-	}
-
-	if ok, lerr := vmctx.Sys().VerifyFallbackPost(vmctx.Context(), mi.SectorSize,
-		sectorInfos, seed[:], params.Proof, candidates, proverID, activeFaults); !ok || lerr != nil {
-		if lerr != nil {
-			// TODO: study PoST errors
-			return nil, aerrors.Absorb(lerr, 4, "PoST error")
-		}
-		if !ok {
-			return nil, aerrors.New(4, "PoST invalid")
-		}
-	}
-
-	// Post submission is successful!
-	if err := onSuccessfulPoSt2(self, vmctx, activeFaults); err != nil {
-		return nil, err
-	}
-
-	c, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(oldstate, c); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) GetPower(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	return self.Power.Bytes(), nil
-}
-
-func (sma StorageMinerActor2) GetPower2(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	if self.SlashedAt != 0 {
-		return types.NewInt(0).Bytes(), nil
-	}
-
-	return self.Power.Bytes(), nil
-}
-
-func SectorIsUnique2(ctx context.Context, s types.Storage, sroot cid.Cid, sid uint64) (bool, ActorError) {
-	found, _, _, err := GetFromSectorSet2(ctx, s, sroot, sid)
-	if err != nil {
-		return false, err
-	}
-
-	return !found, nil
-}
-
-func AddToSectorSet2(ctx context.Context, blks amt2.Blocks, ss cid.Cid, sectorID uint64, commR, commD []byte) (cid.Cid, ActorError) {
-	if sectorID >= build.MinerMaxSectors {
-		return cid.Undef, aerrors.Newf(25, "sector ID out of range: %d", sectorID)
-	}
-	ssr, err := amt2.LoadAMT(blks, ss)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "could not load sector set node")
-	}
-
-	// TODO: Spec says to use SealCommitment, and construct commD from deals each time,
-	//  but that would make SubmitPoSt way, way more expensive
-	if err := ssr.Set(sectorID, [][]byte{commR, commD}); err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to set commitment in sector set")
-	}
-
-	ncid, err := ssr.Flush()
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to flush sector set")
-	}
-
-	return ncid, nil
-}
-
-func GetFromSectorSet2(ctx context.Context, s types.Storage, ss cid.Cid, sectorID uint64) (bool, []byte, []byte, ActorError) {
-	if sectorID >= build.MinerMaxSectors {
-		return false, nil, nil, aerrors.Newf(25, "sector ID out of range: %d", sectorID)
-	}
-
-	ssr, err := amt2.LoadAMT(types.WrapStorage(s), ss)
-	if err != nil {
-		return false, nil, nil, aerrors.HandleExternalError(err, "could not load sector set node")
-	}
-
-	var comms [][]byte
-	err = ssr.Get(sectorID, &comms)
-	if err != nil {
-		if _, ok := err.(*amt2.ErrNotFound); ok {
-			return false, nil, nil, nil
-		}
-		return false, nil, nil, aerrors.HandleExternalError(err, "failed to find sector in sector set")
-	}
-
-	if len(comms) != 2 {
-		return false, nil, nil, aerrors.Newf(20, "sector set entry should only have 2 elements")
-	}
-
-	return true, comms[0], comms[1], nil
-}
-
-func RemoveFromSectorSet2(ctx context.Context, s types.Storage, ss cid.Cid, ids []uint64) (cid.Cid, aerrors.ActorError) {
-
-	ssr, err := amt2.LoadAMT(types.WrapStorage(s), ss)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "could not load sector set node")
-	}
-
-	for _, id := range ids {
-		if err := ssr.Delete(id); err != nil {
-			log.Warnf("failed to delete sector %d from set: %s", id, err)
-		}
-	}
-
-	ncid, err := ssr.Flush()
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to flush sector set")
-	}
-
-	return ncid, nil
-}
-
-func (sma StorageMinerActor2) GetWorkerAddr(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	return mi.Worker.Bytes(), nil
-}
-
-func (sma StorageMinerActor2) GetOwner(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	return mi.Owner.Bytes(), nil
-}
-
-func (sma StorageMinerActor2) GetPeerID(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	return []byte(mi.PeerID), nil
-}
-
-func (sma StorageMinerActor2) UpdatePeerID(act *types.Actor, vmctx types.VMContext, params *UpdatePeerIDParams) ([]byte, ActorError) {
-	oldstate, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().From != mi.Worker {
-		return nil, aerrors.New(2, "only the mine worker may update the peer ID")
-	}
-
-	mi.PeerID = params.PeerID
-
-	mic, err := vmctx.Storage().Put(mi)
-	if err != nil {
-		return nil, err
-	}
-
-	self.Info = mic
-
-	c, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(oldstate, c); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) GetSectorSize(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	mi, err := loadMinerInfo(vmctx, self)
-	if err != nil {
-		return nil, err
-	}
-
-	return types.NewInt(mi.SectorSize).Bytes(), nil
-}
-
-func (sma StorageMinerActor2) IsSlashed(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	_, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	return cbg.EncodeBool(self.SlashedAt != 0), nil
-}
-
-// TODO: better name
-func (sma StorageMinerActor2) CheckMiner(act *types.Actor, vmctx types.VMContext, params *CheckMinerParams) ([]byte, ActorError) {
-	if vmctx.Message().From != StoragePowerAddress {
-		return nil, aerrors.New(2, "only the storage power actor can check miner")
-	}
-
-	oldstate, self, err := loadState(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	if !isLate(vmctx.BlockHeight(), self) {
-		// Everything's fine
-		return nil, nil
-	}
-
-	if self.SlashedAt != 0 {
-		// Don't slash more than necessary
-		return nil, nil
-	}
-
-	if params.NetworkPower.Equals(self.Power) {
-		// Don't break the network when there's only one miner left
-
-		log.Warnf("can't slash miner %s for missed PoSt, no power would be left in the network", vmctx.Message().To)
-		return nil, nil
-	}
-
-	// Slash for being late
-
-	self.SlashedAt = vmctx.BlockHeight()
-	oldPower := self.Power
-
-	if vmctx.BlockHeight() > build.ForkMissingSnowballs {
-		self.Power = types.NewInt(0)
-	}
-
-	nstate, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-	if err := vmctx.Storage().Commit(oldstate, nstate); err != nil {
-		return nil, err
-	}
-
-	var out bytes.Buffer
-	if err := oldPower.MarshalCBOR(&out); err != nil {
-		return nil, aerrors.HandleExternalError(err, "marshaling return value")
-	}
-	return out.Bytes(), nil
-}
-
-func (sma StorageMinerActor2) DeclareFaults(act *types.Actor, vmctx types.VMContext, params *DeclareFaultsParams) ([]byte, ActorError) {
-	oldstate, self, aerr := loadState(vmctx)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	mi, aerr := loadMinerInfo(vmctx, self)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	if vmctx.Message().From != mi.Worker {
-		return nil, aerrors.New(1, "not authorized to declare faults for miner")
-	}
-
-	nfaults, err := types.MergeBitFields(params.Faults, self.FaultSet)
-	if err != nil {
-		return nil, aerrors.Absorb(err, 1, "failed to merge bitfields")
-	}
-
-	ss, nerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Sectors)
-	if nerr != nil {
-		return nil, aerrors.HandleExternalError(nerr, "failed to load sector set")
-	}
-
-	cf, nerr := nfaults.Count()
-	if nerr != nil {
-		return nil, aerrors.Absorb(nerr, 2, "could not decode RLE+")
-	}
-
-	if cf > 2*ss.Count {
-		return nil, aerrors.Newf(3, "too many declared faults: %d > %d", cf, 2*ss.Count)
-	}
-
-	self.FaultSet = nfaults
-
-	self.LastFaultSubmission = vmctx.BlockHeight()
-
-	nstate, aerr := vmctx.Storage().Put(self)
-	if aerr != nil {
-		return nil, aerr
-	}
-	if err := vmctx.Storage().Commit(oldstate, nstate); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) SlashConsensusFault(act *types.Actor, vmctx types.VMContext, params *MinerSlashConsensusFault) ([]byte, ActorError) {
-	if vmctx.Message().From != StoragePowerAddress {
-		return nil, aerrors.New(1, "SlashConsensusFault may only be called by the storage market actor")
-	}
-
-	slashedCollateral := params.SlashedCollateral
-	if slashedCollateral.LessThan(act.Balance) {
-		slashedCollateral = act.Balance
-	}
-
-	// Some of the slashed collateral should be paid to the slasher
-	// GROWTH_RATE determines how fast the slasher share of slashed collateral will increase as block elapses
-	// current GROWTH_RATE results in SLASHER_SHARE reaches 1 after 30 blocks
-	// TODO: define arithmetic precision and rounding for this operation
-	blockElapsed := vmctx.BlockHeight() - params.AtHeight
-
-	slasherShare := slasherShare(params.SlashedCollateral, blockElapsed)
-
-	burnPortion := types.BigSub(slashedCollateral, slasherShare)
-
-	_, err := vmctx.Send(vmctx.Message().From, 0, slasherShare, nil)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to pay slasher")
-	}
-
-	_, err = vmctx.Send(BurntFundsAddress, 0, burnPortion, nil)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to burn funds")
-	}
-
-	if vmctx.BlockHeight() > build.ForkMissingSnowballs {
-		oldstate, self, err := loadState(vmctx)
-		if err != nil {
-			return nil, aerrors.Wrap(err, "failed to load state for slashing")
-		}
-
-		self.Power = types.NewInt(0)
-
-		ncid, err := vmctx.Storage().Put(self)
-		if err != nil {
-			return nil, err
-		}
-		if err := vmctx.Storage().Commit(oldstate, ncid); err != nil {
-			return nil, err
-		}
-	}
-
-	// TODO: this still allows the miner to commit sectors and submit posts,
-	// their users could potentially be unaffected, but the miner will never be
-	// able to mine a block again
-	// One potential issue: the miner will have to pay back the slashed
-	// collateral to continue submitting PoSts, which includes pledge
-	// collateral that they no longer really 'need'
-
-	return nil, nil
-}
-
-func (sma StorageMinerActor2) SubmitElectionPoSt(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	if vmctx.Message().From != NetworkAddress {
-		return nil, aerrors.Newf(1, "submit election post can only be called by the storage power actor")
-	}
-
-	oldstate, self, aerr := loadState(vmctx)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	if self.SlashedAt != 0 {
-		return nil, aerrors.New(1, "slashed miners can't perform election PoSt")
-	}
-
-	pss, nerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingSet)
-	if nerr != nil {
-		return nil, aerrors.HandleExternalError(nerr, "failed to load proving set")
-	}
-
-	ss, nerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Sectors)
-	if nerr != nil {
-		return nil, aerrors.HandleExternalError(nerr, "failed to load proving set")
-	}
-
-	faults, nerr := self.FaultSet.AllMap(2 * ss.Count)
-	if nerr != nil {
-		return nil, aerrors.Absorb(nerr, 1, "invalid bitfield (fatal?)")
-	}
-
-	activeFaults := uint64(0)
-	for f := range faults {
-		if f > amt2.MaxIndex {
-			continue
-		}
-
-		var comms [][]byte
-		err := pss.Get(f, &comms)
-		if err != nil {
-			var notfound *amt2.ErrNotFound
-			if !xerrors.As(err, &notfound) {
-				return nil, aerrors.HandleExternalError(err, "failed to find sector in sector set")
-			}
-			continue
-		}
-
-		activeFaults++
-	}
-
-	if err := onSuccessfulPoSt2(self, vmctx, activeFaults); err != nil { // TODO
-		return nil, err
-	}
-
-	ncid, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, err
-	}
-	if err := vmctx.Storage().Commit(oldstate, ncid); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func onSuccessfulPoSt2(self *StorageMinerActorState, vmctx types.VMContext, activeFaults uint64) aerrors.ActorError {
-	// FORK
-	if vmctx.BlockHeight() < build.ForkBootyBayHeight {
-		return onSuccessfulPoSt(self, vmctx, activeFaults)
-	}
-
-	var mi MinerInfo
-	if err := vmctx.Storage().Get(self.Info, &mi); err != nil {
-		return err
-	}
-
-	pss, nerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingSet)
-	if nerr != nil {
-		return aerrors.HandleExternalError(nerr, "failed to load proving set")
-	}
-
-	ss, nerr := amt2.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Sectors)
-	if nerr != nil {
-		return aerrors.HandleExternalError(nerr, "failed to load sector set")
-	}
-
-	faults, nerr := self.FaultSet.All(2 * ss.Count)
-	if nerr != nil {
-		return aerrors.Absorb(nerr, 1, "invalid bitfield (fatal?)")
-	}
-
-	self.FaultSet = types.NewBitField()
-
-	oldPower := self.Power
-	newPower := types.BigMul(types.NewInt(pss.Count-activeFaults), types.NewInt(mi.SectorSize))
-
-	// If below the minimum size requirement, miners have zero power
-	if newPower.LessThan(types.NewInt(build.MinimumMinerPower)) {
-		newPower = types.NewInt(0)
-	}
-
-	self.Power = newPower
-
-	delta := types.BigSub(self.Power, oldPower)
-	if self.SlashedAt != 0 {
-		self.SlashedAt = 0
-		delta = self.Power
-	}
-
-	prevSlashingDeadline := self.ElectionPeriodStart + build.SlashablePowerDelay
-	if !self.Active && newPower.GreaterThan(types.NewInt(0)) {
-		self.Active = true
-		prevSlashingDeadline = 0
-	}
-
-	if !(oldPower.IsZero() && newPower.IsZero()) {
-		enc, err := SerializeParams(&UpdateStorageParams{
-			Delta:                 delta,
-			NextSlashDeadline:     vmctx.BlockHeight() + build.SlashablePowerDelay,
-			PreviousSlashDeadline: prevSlashingDeadline,
-		})
-		if err != nil {
-			return err
-		}
-
-		_, err = vmctx.Send(StoragePowerAddress, SPAMethods.UpdateStorage, types.NewInt(0), enc)
-		if err != nil {
-			return aerrors.Wrap(err, "updating storage failed")
-		}
-
-		self.ElectionPeriodStart = vmctx.BlockHeight()
-	}
-
-	var ncid cid.Cid
-	var err aerrors.ActorError
-
-	ncid, err = RemoveFromSectorSet2(vmctx.Context(), vmctx.Storage(), self.Sectors, faults)
-	if err != nil {
-		return err
-	}
-
-	self.Sectors = ncid
-	self.ProvingSet = ncid
-	return nil
-}
@@ -1,281 +0,0 @@
-package actors_test
-
-import (
-	"bytes"
-	"context"
-	"math"
-	"math/rand"
-	"testing"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/go-sectorbuilder"
-	"github.com/filecoin-project/lotus/api"
-	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/stmgr"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/lib/rlepluslazy"
-	hamt "github.com/ipfs/go-hamt-ipld"
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	"github.com/stretchr/testify/assert"
-	cbg "github.com/whyrusleeping/cbor-gen"
-)
-
-func TestMinerCommitSectors(t *testing.T) {
-	var worker, client address.Address
-	var minerAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&worker, 1000000),
-		HarnessAddr(&client, 1000000),
-		HarnessActor(&minerAddr, &worker, actors.StorageMinerCodeCid,
-			func() cbg.CBORMarshaler {
-				return &actors.StorageMinerConstructorParams{
-					Owner:      worker,
-					Worker:     worker,
-					SectorSize: 1024,
-					PeerID:     "fakepeerid",
-				}
-			}),
-	}
-
-	h := NewHarness(t, opts...)
-	h.vm.Syscalls.ValidatePoRep = func(ctx context.Context, maddr address.Address, ssize uint64, commD, commR, ticket, proof, seed []byte, sectorID uint64) (bool, aerrors.ActorError) {
-		// all proofs are valid
-		return true, nil
-	}
-
-	ret, _ := h.SendFunds(t, worker, minerAddr, types.NewInt(100000))
-	ApplyOK(t, ret)
-
-	ret, _ = h.InvokeWithValue(t, client, actors.StorageMarketAddress, actors.SMAMethods.AddBalance, types.NewInt(2000), nil)
-	ApplyOK(t, ret)
-
-	addSectorToMiner(h, t, minerAddr, worker, client, 1)
-
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-}
-
-type badRuns struct {
-	done bool
-}
-
-func (br *badRuns) HasNext() bool {
-	return !br.done
-}
-
-func (br *badRuns) NextRun() (rlepluslazy.Run, error) {
-	br.done = true
-	return rlepluslazy.Run{true, math.MaxInt64}, nil
-}
-
-var _ rlepluslazy.RunIterator = (*badRuns)(nil)
-
-func TestMinerSubmitBadFault(t *testing.T) {
-	oldSS, oldMin := build.SectorSizes, build.MinimumMinerPower
-	build.SectorSizes, build.MinimumMinerPower = []uint64{1024}, 1024
-	defer func() {
-		build.SectorSizes, build.MinimumMinerPower = oldSS, oldMin
-	}()
-
-	var worker, client address.Address
-	var minerAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&worker, 1000000),
-		HarnessAddr(&client, 1000000),
-		HarnessAddMiner(&minerAddr, &worker),
-	}
-
-	h := NewHarness(t, opts...)
-	h.vm.Syscalls.ValidatePoRep = func(ctx context.Context, maddr address.Address, ssize uint64, commD, commR, ticket, proof, seed []byte, sectorID uint64) (bool, aerrors.ActorError) {
-		// all proofs are valid
-		return true, nil
-	}
-
-	ret, _ := h.SendFunds(t, worker, minerAddr, types.NewInt(100000))
-	ApplyOK(t, ret)
-
-	ret, _ = h.InvokeWithValue(t, client, actors.StorageMarketAddress, actors.SMAMethods.AddBalance, types.NewInt(2000), nil)
-	ApplyOK(t, ret)
-
-	addSectorToMiner(h, t, minerAddr, worker, client, 1)
-
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-	bf := types.NewBitField()
-	bf.Set(6)
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.DeclareFaults, &actors.DeclareFaultsParams{bf})
-	ApplyOK(t, ret)
-
-	ret, _ = h.Invoke(t, actors.NetworkAddress, minerAddr, actors.MAMethods.SubmitElectionPoSt, nil)
-	ApplyOK(t, ret)
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-	st, err := getMinerState(context.TODO(), h.vm.StateTree(), h.bs, minerAddr)
-	assert.NoError(t, err)
-	expectedPower := st.Power
-	if types.BigCmp(expectedPower, types.NewInt(1024)) != 0 {
-		t.Errorf("Expected power of 1024, got %s", expectedPower)
-	}
-
-	badnum := uint64(0)
-	badnum--
-	bf = types.NewBitField()
-	bf.Set(badnum)
-	bf.Set(badnum - 1)
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.DeclareFaults, &actors.DeclareFaultsParams{bf})
-	ApplyOK(t, ret)
-
-	ret, _ = h.Invoke(t, actors.NetworkAddress, minerAddr, actors.MAMethods.SubmitElectionPoSt, nil)
-
-	ApplyOK(t, ret)
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-	st, err = getMinerState(context.TODO(), h.vm.StateTree(), h.bs, minerAddr)
-	assert.NoError(t, err)
-	currentPower := st.Power
-	if types.BigCmp(expectedPower, currentPower) != 0 {
-		t.Errorf("power changed and shouldn't have: %s != %s", expectedPower, currentPower)
-	}
-
-	bf.Set(badnum - 2)
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.DeclareFaults, &actors.DeclareFaultsParams{bf})
-	if ret.ExitCode != 3 {
-		t.Errorf("expected exit code 3, got %d: %+v", ret.ExitCode, ret.ActorErr)
-	}
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-	rle, err := rlepluslazy.EncodeRuns(&badRuns{}, []byte{})
-	assert.NoError(t, err)
-
-	bf, err = types.NewBitFieldFromBytes(rle)
-	assert.NoError(t, err)
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.DeclareFaults, &actors.DeclareFaultsParams{bf})
-	if ret.ExitCode != 3 {
-		t.Errorf("expected exit code 3, got %d: %+v", ret.ExitCode, ret.ActorErr)
-	}
-	assertSectorIDs(h, t, minerAddr, []uint64{1})
-
-	bf = types.NewBitField()
-	bf.Set(1)
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.DeclareFaults, &actors.DeclareFaultsParams{bf})
-	ApplyOK(t, ret)
-
-	ret, _ = h.Invoke(t, actors.NetworkAddress, minerAddr, actors.MAMethods.SubmitElectionPoSt, nil)
-	ApplyOK(t, ret)
-
-	assertSectorIDs(h, t, minerAddr, []uint64{})
-
-}
-
-func addSectorToMiner(h *Harness, t *testing.T, minerAddr, worker, client address.Address, sid uint64) {
-	t.Helper()
-	s := sectorbuilder.UserBytesForSectorSize(1024)
-	deal := h.makeFakeDeal(t, minerAddr, worker, client, s)
-	ret, _ := h.Invoke(t, worker, actors.StorageMarketAddress, actors.SMAMethods.PublishStorageDeals,
-		&actors.PublishStorageDealsParams{
-			Deals: []actors.StorageDealProposal{*deal},
-		})
-	ApplyOK(t, ret)
-	var dealIds actors.PublishStorageDealResponse
-	if err := dealIds.UnmarshalCBOR(bytes.NewReader(ret.Return)); err != nil {
-		t.Fatal(err)
-	}
-
-	dealid := dealIds.DealIDs[0]
-
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.PreCommitSector,
-		&actors.SectorPreCommitInfo{
-			SectorNumber: sid,
-			CommR:        []byte("cats"),
-			SealEpoch:    10,
-			DealIDs:      []uint64{dealid},
-		})
-	ApplyOK(t, ret)
-
-	h.BlockHeight += 100
-	ret, _ = h.Invoke(t, worker, minerAddr, actors.MAMethods.ProveCommitSector,
-		&actors.SectorProveCommitInfo{
-			Proof:    []byte("prooofy"),
-			SectorID: sid,
-			DealIDs:  []uint64{dealid}, // TODO: weird that i have to pass this again
-		})
-	ApplyOK(t, ret)
-}
-
-func assertSectorIDs(h *Harness, t *testing.T, maddr address.Address, ids []uint64) {
-	t.Helper()
-	sectors, err := getMinerSectorSet(context.TODO(), h.vm.StateTree(), h.bs, maddr)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if len(sectors) != len(ids) {
-		t.Fatal("miner has wrong number of sectors in their sector set")
-	}
-
-	all := make(map[uint64]bool)
-	for _, s := range sectors {
-		all[s.SectorID] = true
-	}
-
-	for _, id := range ids {
-		if !all[id] {
-			t.Fatal("expected to find sector ID: ", id)
-		}
-	}
-}
-
-func getMinerState(ctx context.Context, st types.StateTree, bs blockstore.Blockstore, maddr address.Address) (*actors.StorageMinerActorState, error) {
-	mact, err := st.GetActor(maddr)
-	if err != nil {
-		return nil, err
-	}
-
-	cst := hamt.CSTFromBstore(bs)
-
-	var mstate actors.StorageMinerActorState
-	if err := cst.Get(ctx, mact.Head, &mstate); err != nil {
-		return nil, err
-	}
-	return &mstate, nil
-}
-
-func getMinerSectorSet(ctx context.Context, st types.StateTree, bs blockstore.Blockstore, maddr address.Address) ([]*api.ChainSectorInfo, error) {
-	mstate, err := getMinerState(ctx, st, bs, maddr)
-	if err != nil {
-		return nil, err
-	}
-
-	return stmgr.LoadSectorsFromSet(ctx, bs, mstate.Sectors)
-}
-
-func (h *Harness) makeFakeDeal(t *testing.T, miner, worker, client address.Address, size uint64) *actors.StorageDealProposal {
-	data := make([]byte, size)
-	rand.Read(data)
-	commP, err := sectorbuilder.GeneratePieceCommitment(bytes.NewReader(data), size)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	prop := actors.StorageDealProposal{
-		PieceRef:  commP[:],
-		PieceSize: size,
-
-		Client:   client,
-		Provider: miner,
-
-		ProposalExpiration: 10000,
-		Duration:           150,
-
-		StoragePricePerEpoch: types.NewInt(1),
-		StorageCollateral:    types.NewInt(0),
-	}
-
-	if err := api.SignWith(context.TODO(), h.w.Sign, client, &prop); err != nil {
-		t.Fatal(err)
-	}
-
-	return &prop
-}
@@ -1,431 +0,0 @@
-package actors
-
-import (
-	"github.com/ipfs/go-cid"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-
-	cbg "github.com/whyrusleeping/cbor-gen"
-)
-
-type MultiSigActor struct{}
-type MultiSigActorState struct {
-	Signers  []address.Address
-	Required uint64
-	NextTxID uint64
-
-	InitialBalance types.BigInt
-	StartingBlock  uint64
-	UnlockDuration uint64
-
-	//TODO: make this map/sharray/whatever
-	Transactions []MTransaction
-}
-
-func (msas MultiSigActorState) canSpend(act *types.Actor, amnt types.BigInt, height uint64) bool {
-	if msas.UnlockDuration == 0 {
-		return true
-	}
-
-	offset := height - msas.StartingBlock
-	if offset > msas.UnlockDuration {
-		return true
-	}
-
-	minBalance := types.BigDiv(msas.InitialBalance, types.NewInt(msas.UnlockDuration))
-	minBalance = types.BigMul(minBalance, types.NewInt(offset))
-	return !minBalance.LessThan(types.BigSub(act.Balance, amnt))
-}
-
-func (msas MultiSigActorState) isSigner(addr address.Address) bool {
-	for _, s := range msas.Signers {
-		if s == addr {
-			return true
-		}
-	}
-	return false
-}
-
-func (msas MultiSigActorState) getTransaction(txid uint64) (*MTransaction, ActorError) {
-	if txid >= uint64(len(msas.Transactions)) {
-		return nil, aerrors.Newf(1, "could not get transaction (numbers of tx %d,want to get txid %d)", len(msas.Transactions), txid)
-	}
-	return &msas.Transactions[txid], nil
-}
-
-type MTransaction struct {
-	Created uint64 // NOT USED ??
-	TxID    uint64
-
-	To     address.Address
-	Value  types.BigInt
-	Method uint64
-	Params []byte
-
-	Approved []address.Address
-	Complete bool
-	Canceled bool
-	RetCode  uint64
-}
-
-func (tx MTransaction) Active() ActorError {
-	if tx.Complete {
-		return aerrors.New(2, "transaction already completed")
-	}
-	if tx.Canceled {
-		return aerrors.New(3, "transaction canceled")
-	}
-	return nil
-}
-
-type musigMethods struct {
-	MultiSigConstructor uint64
-	Propose             uint64
-	Approve             uint64
-	Cancel              uint64
-	ClearCompleted      uint64
-	AddSigner           uint64
-	RemoveSigner        uint64
-	SwapSigner          uint64
-	ChangeRequirement   uint64
-}
-
-var MultiSigMethods = musigMethods{1, 2, 3, 4, 5, 6, 7, 8, 9}
-
-func (msa MultiSigActor) Exports() []interface{} {
-	return []interface{}{
-		1: msa.MultiSigConstructor,
-		2: msa.Propose,
-		3: msa.Approve,
-		4: msa.Cancel,
-		//5: msa.ClearCompleted,
-		6: msa.AddSigner,
-		7: msa.RemoveSigner,
-		8: msa.SwapSigner,
-		9: msa.ChangeRequirement,
-	}
-}
-
-type MultiSigConstructorParams struct {
-	Signers        []address.Address
-	Required       uint64
-	UnlockDuration uint64
-}
-
-func (MultiSigActor) MultiSigConstructor(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigConstructorParams) ([]byte, ActorError) {
-	self := &MultiSigActorState{
-		Signers:  params.Signers,
-		Required: params.Required,
-	}
-
-	if params.UnlockDuration != 0 {
-		self.InitialBalance = vmctx.Message().Value
-		self.UnlockDuration = params.UnlockDuration
-		self.StartingBlock = vmctx.BlockHeight()
-	}
-
-	head, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "could not put new head")
-	}
-	err = vmctx.Storage().Commit(EmptyCBOR, head)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "could not commit new head")
-	}
-	return nil, nil
-}
-
-type MultiSigProposeParams struct {
-	To     address.Address
-	Value  types.BigInt
-	Method uint64
-	Params []byte
-}
-
-func (MultiSigActor) load(vmctx types.VMContext) (cid.Cid, *MultiSigActorState, ActorError) {
-	var self MultiSigActorState
-	head := vmctx.Storage().GetHead()
-
-	err := vmctx.Storage().Get(head, &self)
-	if err != nil {
-		return cid.Undef, nil, aerrors.Wrap(err, "could not get self")
-	}
-	return head, &self, nil
-}
-
-func (msa MultiSigActor) loadAndVerify(vmctx types.VMContext) (cid.Cid, *MultiSigActorState, ActorError) {
-	head, self, err := msa.load(vmctx)
-	if err != nil {
-		return cid.Undef, nil, err
-	}
-
-	if !self.isSigner(vmctx.Message().From) {
-		return cid.Undef, nil, aerrors.New(1, "not authorized")
-	}
-	return head, self, nil
-}
-
-func (MultiSigActor) save(vmctx types.VMContext, oldHead cid.Cid, self *MultiSigActorState) ActorError {
-	newHead, err := vmctx.Storage().Put(self)
-	if err != nil {
-		return aerrors.Wrap(err, "could not put new head")
-	}
-	err = vmctx.Storage().Commit(oldHead, newHead)
-	if err != nil {
-		return aerrors.Wrap(err, "could not commit new head")
-	}
-	return nil
-
-}
-
-func (msa MultiSigActor) Propose(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigProposeParams) ([]byte, ActorError) {
-
-	head, self, err := msa.loadAndVerify(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	txid := self.NextTxID
-	self.NextTxID++
-
-	{
-		tx := MTransaction{
-			TxID:     txid,
-			To:       params.To,
-			Value:    params.Value,
-			Method:   params.Method,
-			Params:   params.Params,
-			Approved: []address.Address{vmctx.Message().From},
-		}
-		self.Transactions = append(self.Transactions, tx)
-	}
-
-	tx, err := self.getTransaction(txid)
-	if err != nil {
-		return nil, err
-	}
-
-	if self.Required == 1 {
-		if !self.canSpend(act, tx.Value, vmctx.BlockHeight()) {
-			return nil, aerrors.New(100, "transaction amount exceeds available")
-		}
-		_, err := vmctx.Send(tx.To, tx.Method, tx.Value, tx.Params)
-		if aerrors.IsFatal(err) {
-			return nil, err
-		}
-		tx.RetCode = uint64(aerrors.RetCode(err))
-		tx.Complete = true
-	}
-
-	err = msa.save(vmctx, head, self)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "saving state")
-	}
-
-	// REVIEW: On one hand, I like being very explicit about how we're doing the serialization
-	// on the other, maybe we shouldnt do direct calls to underlying serialization libs?
-	return cbg.CborEncodeMajorType(cbg.MajUnsignedInt, tx.TxID), nil
-}
-
-type MultiSigTxID struct {
-	TxID uint64
-}
-
-func (msa MultiSigActor) Approve(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigTxID) ([]byte, ActorError) {
-
-	head, self, err := msa.loadAndVerify(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	tx, err := self.getTransaction(params.TxID)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := tx.Active(); err != nil {
-		return nil, aerrors.Wrap(err, "could not approve")
-	}
-
-	for _, signer := range tx.Approved {
-		if signer == vmctx.Message().From {
-			return nil, aerrors.New(4, "already signed this message")
-		}
-	}
-	tx.Approved = append(tx.Approved, vmctx.Message().From)
-	if uint64(len(tx.Approved)) >= self.Required {
-		if !self.canSpend(act, tx.Value, vmctx.BlockHeight()) {
-			return nil, aerrors.New(100, "transaction amount exceeds available")
-		}
-		_, err := vmctx.Send(tx.To, tx.Method, tx.Value, tx.Params)
-		if aerrors.IsFatal(err) {
-			return nil, err
-		}
-		tx.RetCode = uint64(aerrors.RetCode(err))
-		tx.Complete = true
-	}
-
-	return nil, msa.save(vmctx, head, self)
-}
-
-func (msa MultiSigActor) Cancel(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigTxID) ([]byte, ActorError) {
-
-	head, self, err := msa.loadAndVerify(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	tx, err := self.getTransaction(params.TxID)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := tx.Active(); err != nil {
-		return nil, aerrors.Wrap(err, "could not cancel")
-	}
-
-	proposer := tx.Approved[0]
-	if proposer != vmctx.Message().From && self.isSigner(proposer) {
-		return nil, aerrors.New(4, "cannot cancel another signers transaction")
-	}
-	tx.Canceled = true
-
-	return nil, msa.save(vmctx, head, self)
-}
-
-type MultiSigAddSignerParam struct {
-	Signer   address.Address
-	Increase bool
-}
-
-func (msa MultiSigActor) AddSigner(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigAddSignerParam) ([]byte, ActorError) {
-
-	head, self, err := msa.load(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	msg := vmctx.Message()
-	if msg.From != msg.To {
-		return nil, aerrors.New(4, "add signer must be called by wallet itself")
-	}
-	if self.isSigner(params.Signer) {
-		return nil, aerrors.New(5, "new address is already a signer")
-	}
-
-	self.Signers = append(self.Signers, params.Signer)
-	if params.Increase {
-		self.Required = self.Required + 1
-	}
-
-	return nil, msa.save(vmctx, head, self)
-}
-
-type MultiSigRemoveSignerParam struct {
-	Signer   address.Address
-	Decrease bool
-}
-
-func (msa MultiSigActor) RemoveSigner(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigRemoveSignerParam) ([]byte, ActorError) {
-
-	head, self, err := msa.load(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	msg := vmctx.Message()
-	if msg.From != msg.To {
-		return nil, aerrors.New(4, "remove signer must be called by wallet itself")
-	}
-	if !self.isSigner(params.Signer) {
-		return nil, aerrors.New(5, "given address was not a signer")
-	}
-
-	newSigners := make([]address.Address, 0, len(self.Signers)-1)
-	for _, s := range self.Signers {
-		if s != params.Signer {
-			newSigners = append(newSigners, s)
-		}
-	}
-	if params.Decrease || uint64(len(self.Signers)-1) < self.Required {
-		self.Required = self.Required - 1
-	}
-
-	self.Signers = newSigners
-
-	return nil, msa.save(vmctx, head, self)
-}
-
-type MultiSigSwapSignerParams struct {
-	From address.Address
-	To   address.Address
-}
-
-func (msa MultiSigActor) SwapSigner(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigSwapSignerParams) ([]byte, ActorError) {
-
-	head, self, err := msa.load(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	msg := vmctx.Message()
-	if msg.From != msg.To {
-		return nil, aerrors.New(4, "swap signer must be called by wallet itself")
-	}
-
-	if !self.isSigner(params.From) {
-		return nil, aerrors.New(5, "given old address was not a signer")
-	}
-	if self.isSigner(params.To) {
-		return nil, aerrors.New(6, "given new address was already a signer")
-	}
-
-	newSigners := make([]address.Address, 0, len(self.Signers))
-	for _, s := range self.Signers {
-		if s != params.From {
-			newSigners = append(newSigners, s)
-		}
-	}
-	newSigners = append(newSigners, params.To)
-	self.Signers = newSigners
-
-	return nil, msa.save(vmctx, head, self)
-}
-
-type MultiSigChangeReqParams struct {
-	Req uint64
-}
-
-func (msa MultiSigActor) ChangeRequirement(act *types.Actor, vmctx types.VMContext,
-	params *MultiSigChangeReqParams) ([]byte, ActorError) {
-
-	head, self, err := msa.load(vmctx)
-	if err != nil {
-		return nil, err
-	}
-
-	msg := vmctx.Message()
-	if msg.From != msg.To {
-		return nil, aerrors.New(4, "change requirement must be called by wallet itself")
-	}
-
-	if params.Req < 1 {
-		return nil, aerrors.New(5, "requirement must be at least 1")
-	}
-
-	if params.Req > uint64(len(self.Signers)) {
-		return nil, aerrors.New(6, "requirement must be at most the numbers of signers")
-	}
-
-	self.Required = params.Req
-	return nil, msa.save(vmctx, head, self)
-}
@@ -1,97 +0,0 @@
-package actors_test
-
-import (
-	"testing"
-
-	cbor "github.com/ipfs/go-ipld-cbor"
-	"github.com/stretchr/testify/assert"
-	cbg "github.com/whyrusleeping/cbor-gen"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/vm"
-)
-
-func TestMultiSigCreate(t *testing.T) {
-	var creatorAddr, sig1Addr, sig2Addr, outsideAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&creatorAddr, 100000),
-		HarnessAddr(&sig1Addr, 100000),
-		HarnessAddr(&sig2Addr, 100000),
-		HarnessAddr(&outsideAddr, 100000),
-	}
-
-	h := NewHarness(t, opts...)
-	ret, _ := h.CreateActor(t, creatorAddr, actors.MultisigCodeCid,
-		&actors.MultiSigConstructorParams{
-			Signers:  []address.Address{creatorAddr, sig1Addr, sig2Addr},
-			Required: 2,
-		})
-	ApplyOK(t, ret)
-}
-
-func ApplyOK(t testing.TB, ret *vm.ApplyRet) {
-	t.Helper()
-	if ret.ExitCode != 0 {
-		t.Fatalf("exit code should be 0, got %d, actorErr: %+v", ret.ExitCode, ret.ActorErr)
-	}
-	if ret.ActorErr != nil {
-		t.Fatalf("somehow got an error with exit == 0: %s", ret.ActorErr)
-	}
-}
-
-func TestMultiSigOps(t *testing.T) {
-	var creatorAddr, sig1Addr, sig2Addr, outsideAddr address.Address
-	var multSigAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&creatorAddr, 100000),
-		HarnessAddr(&sig1Addr, 100000),
-		HarnessAddr(&sig2Addr, 100000),
-		HarnessAddr(&outsideAddr, 100000),
-		HarnessActor(&multSigAddr, &creatorAddr, actors.MultisigCodeCid,
-			func() cbg.CBORMarshaler {
-				return &actors.MultiSigConstructorParams{
-					Signers:  []address.Address{creatorAddr, sig1Addr, sig2Addr},
-					Required: 2,
-				}
-			}),
-	}
-
-	h := NewHarness(t, opts...)
-	{
-		const chargeVal = 2000
-		// Send funds into the multisig
-		ret, _ := h.SendFunds(t, creatorAddr, multSigAddr, types.NewInt(chargeVal))
-		ApplyOK(t, ret)
-		h.AssertBalanceChange(t, creatorAddr, -chargeVal)
-		h.AssertBalanceChange(t, multSigAddr, chargeVal)
-	}
-
-	{
-		// Transfer funds outside of multsig
-		const sendVal = 1000
-		ret, _ := h.Invoke(t, creatorAddr, multSigAddr, actors.MultiSigMethods.Propose,
-			&actors.MultiSigProposeParams{
-				To:    outsideAddr,
-				Value: types.NewInt(sendVal),
-			})
-		ApplyOK(t, ret)
-		var txIDParam actors.MultiSigTxID
-		err := cbor.DecodeInto(ret.Return, &txIDParam.TxID)
-		assert.NoError(t, err, "decoding txid")
-
-		ret, _ = h.Invoke(t, outsideAddr, multSigAddr, actors.MultiSigMethods.Approve,
-			&txIDParam)
-		assert.Equal(t, uint8(1), ret.ExitCode, "outsideAddr should not approve")
-		h.AssertBalanceChange(t, multSigAddr, 0)
-
-		ret2, _ := h.Invoke(t, sig1Addr, multSigAddr, actors.MultiSigMethods.Approve,
-			&txIDParam)
-		ApplyOK(t, ret2)
-
-		h.AssertBalanceChange(t, outsideAddr, sendVal)
-		h.AssertBalanceChange(t, multSigAddr, -sendVal)
-	}
-
-}
@@ -1,302 +0,0 @@
-package actors
-
-import (
-	"bytes"
-	"fmt"
-
-	"github.com/ipfs/go-cid"
-	"github.com/minio/blake2b-simd"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-)
-
-type PaymentChannelActor struct{}
-
-type PaymentInfo struct {
-	PayChActor     address.Address
-	Payer          address.Address
-	ChannelMessage *cid.Cid
-
-	Vouchers []*types.SignedVoucher
-}
-
-type LaneState struct {
-	Closed   bool
-	Redeemed types.BigInt
-	Nonce    uint64
-}
-
-type PaymentChannelActorState struct {
-	From address.Address
-	To   address.Address
-
-	ToSend types.BigInt
-
-	ClosingAt      uint64
-	MinCloseHeight uint64
-
-	// TODO: needs to be map[uint64]*laneState
-	// waiting on refmt#35 to be fixed
-	LaneStates map[string]*LaneState
-}
-
-func (pca PaymentChannelActor) Exports() []interface{} {
-	return []interface{}{
-		1: pca.Constructor,
-		2: pca.UpdateChannelState,
-		3: pca.Close,
-		4: pca.Collect,
-		5: pca.GetOwner,
-		6: pca.GetToSend,
-	}
-}
-
-type pcaMethods struct {
-	Constructor        uint64
-	UpdateChannelState uint64
-	Close              uint64
-	Collect            uint64
-	GetOwner           uint64
-	GetToSend          uint64
-}
-
-var PCAMethods = pcaMethods{1, 2, 3, 4, 5, 6}
-
-type PCAConstructorParams struct {
-	To address.Address
-}
-
-func (pca PaymentChannelActor) Constructor(act *types.Actor, vmctx types.VMContext, params *PCAConstructorParams) ([]byte, ActorError) {
-	var self PaymentChannelActorState
-	self.From = vmctx.Origin()
-	self.To = params.To
-	self.LaneStates = make(map[string]*LaneState)
-
-	storage := vmctx.Storage()
-	c, err := storage.Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := storage.Commit(EmptyCBOR, c); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-type PCAUpdateChannelStateParams struct {
-	Sv     types.SignedVoucher
-	Secret []byte
-	Proof  []byte
-}
-
-func hash(b []byte) []byte {
-	s := blake2b.Sum256(b)
-	return s[:]
-}
-
-type PaymentVerifyParams struct {
-	Extra []byte
-	Proof []byte
-}
-
-func (pca PaymentChannelActor) UpdateChannelState(act *types.Actor, vmctx types.VMContext, params *PCAUpdateChannelStateParams) ([]byte, ActorError) {
-	var self PaymentChannelActorState
-	oldstate := vmctx.Storage().GetHead()
-	storage := vmctx.Storage()
-	if err := storage.Get(oldstate, &self); err != nil {
-		return nil, err
-	}
-
-	sv := params.Sv
-
-	vb, nerr := sv.SigningBytes()
-	if nerr != nil {
-		return nil, aerrors.Absorb(nerr, 1, "failed to serialize signedvoucher")
-	}
-
-	if err := vmctx.VerifySignature(sv.Signature, self.From, vb); err != nil {
-		return nil, err
-	}
-
-	if vmctx.BlockHeight() < sv.TimeLock {
-		return nil, aerrors.New(2, "cannot use this voucher yet!")
-	}
-
-	if len(sv.SecretPreimage) > 0 {
-		if !bytes.Equal(hash(params.Secret), sv.SecretPreimage) {
-			return nil, aerrors.New(3, "incorrect secret!")
-		}
-	}
-
-	if sv.Extra != nil {
-		encoded, err := SerializeParams(&PaymentVerifyParams{sv.Extra.Data, params.Proof})
-		if err != nil {
-			return nil, err
-		}
-
-		_, err = vmctx.Send(sv.Extra.Actor, sv.Extra.Method, types.NewInt(0), encoded)
-		if err != nil {
-			return nil, aerrors.Newf(4, "spend voucher verification failed: %s", err)
-		}
-	}
-
-	ls, ok := self.LaneStates[fmt.Sprint(sv.Lane)]
-	if !ok {
-		ls = new(LaneState)
-		ls.Redeemed = types.NewInt(0) // TODO: kinda annoying that this doesnt default to a usable value
-		self.LaneStates[fmt.Sprint(sv.Lane)] = ls
-	}
-	if ls.Closed {
-		return nil, aerrors.New(5, "cannot redeem a voucher on a closed lane")
-	}
-
-	if ls.Nonce > sv.Nonce {
-		return nil, aerrors.New(6, "voucher has an outdated nonce, cannot redeem")
-	}
-
-	mergeValue := types.NewInt(0)
-	for _, merge := range sv.Merges {
-		if merge.Lane == sv.Lane {
-			return nil, aerrors.New(7, "voucher cannot merge its own lane")
-		}
-
-		ols := self.LaneStates[fmt.Sprint(merge.Lane)]
-
-		if ols.Nonce >= merge.Nonce {
-			return nil, aerrors.New(8, "merge in voucher has outdated nonce, cannot redeem")
-		}
-
-		mergeValue = types.BigAdd(mergeValue, ols.Redeemed)
-		ols.Nonce = merge.Nonce
-	}
-
-	ls.Nonce = sv.Nonce
-	balanceDelta := types.BigSub(sv.Amount, types.BigAdd(mergeValue, ls.Redeemed))
-	ls.Redeemed = sv.Amount
-
-	newSendBalance := types.BigAdd(self.ToSend, balanceDelta)
-	if newSendBalance.LessThan(types.NewInt(0)) {
-		// TODO: is this impossible?
-		return nil, aerrors.New(9, "voucher would leave channel balance negative")
-	}
-
-	if newSendBalance.GreaterThan(act.Balance) {
-		return nil, aerrors.New(10, "not enough funds in channel to cover voucher")
-	}
-
-	log.Info("vals: ", newSendBalance, sv.Amount, balanceDelta, mergeValue, ls.Redeemed)
-	self.ToSend = newSendBalance
-
-	if sv.MinCloseHeight != 0 {
-		if self.ClosingAt != 0 && self.ClosingAt < sv.MinCloseHeight {
-			self.ClosingAt = sv.MinCloseHeight
-		}
-		if self.MinCloseHeight < sv.MinCloseHeight {
-			self.MinCloseHeight = sv.MinCloseHeight
-		}
-	}
-
-	ncid, err := storage.Put(&self)
-	if err != nil {
-		return nil, err
-	}
-	if err := storage.Commit(oldstate, ncid); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (pca PaymentChannelActor) Close(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	var self PaymentChannelActorState
-	storage := vmctx.Storage()
-	oldstate := storage.GetHead()
-	if err := storage.Get(oldstate, &self); err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().From != self.From && vmctx.Message().From != self.To {
-		return nil, aerrors.New(1, "not authorized to close channel")
-	}
-
-	if self.ClosingAt != 0 {
-		return nil, aerrors.New(2, "channel already closing")
-	}
-
-	self.ClosingAt = vmctx.BlockHeight() + build.PaymentChannelClosingDelay
-	if self.ClosingAt < self.MinCloseHeight {
-		self.ClosingAt = self.MinCloseHeight
-	}
-
-	ncid, err := storage.Put(&self)
-	if err != nil {
-		return nil, err
-	}
-	if err := storage.Commit(oldstate, ncid); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (pca PaymentChannelActor) Collect(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	var self PaymentChannelActorState
-	storage := vmctx.Storage()
-	oldstate := storage.GetHead()
-	if err := storage.Get(oldstate, &self); err != nil {
-		return nil, err
-	}
-
-	if self.ClosingAt == 0 {
-		return nil, aerrors.New(1, "payment channel not closing or closed")
-	}
-
-	if vmctx.BlockHeight() < self.ClosingAt {
-		return nil, aerrors.New(2, "payment channel not closed yet")
-	}
-	_, err := vmctx.Send(self.From, 0, types.BigSub(act.Balance, self.ToSend), nil)
-	if err != nil {
-		return nil, err
-	}
-	_, err = vmctx.Send(self.To, 0, self.ToSend, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	self.ToSend = types.NewInt(0)
-
-	ncid, err := storage.Put(&self)
-	if err != nil {
-		return nil, err
-	}
-	if err := storage.Commit(oldstate, ncid); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func (pca PaymentChannelActor) GetOwner(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	var self PaymentChannelActorState
-	storage := vmctx.Storage()
-	if err := storage.Get(storage.GetHead(), &self); err != nil {
-		return nil, err
-	}
-
-	return self.From.Bytes(), nil
-}
-
-func (pca PaymentChannelActor) GetToSend(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	var self PaymentChannelActorState
-	storage := vmctx.Storage()
-	if err := storage.Get(storage.GetHead(), &self); err != nil {
-		return nil, err
-	}
-
-	return self.ToSend.Bytes(), nil
-}
@@ -1,93 +0,0 @@
-package actors_test
-
-import (
-	"context"
-	"testing"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/wallet"
-)
-
-func TestPaychCreate(t *testing.T) {
-	var creatorAddr, targetAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&creatorAddr, 100000),
-		HarnessAddr(&targetAddr, 100000),
-	}
-
-	h := NewHarness(t, opts...)
-	ret, _ := h.CreateActor(t, creatorAddr, actors.PaymentChannelCodeCid,
-		&actors.PCAConstructorParams{
-			To: targetAddr,
-		})
-	ApplyOK(t, ret)
-}
-
-func signVoucher(t *testing.T, w *wallet.Wallet, addr address.Address, sv *types.SignedVoucher) {
-	vb, err := sv.SigningBytes()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	sig, err := w.Sign(context.TODO(), addr, vb)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	sv.Signature = sig
-}
-
-func TestPaychUpdate(t *testing.T) {
-	var creatorAddr, targetAddr address.Address
-	opts := []HarnessOpt{
-		HarnessAddr(&creatorAddr, 100000),
-		HarnessAddr(&targetAddr, 100000),
-	}
-
-	h := NewHarness(t, opts...)
-	ret, _ := h.CreateActor(t, creatorAddr, actors.PaymentChannelCodeCid,
-		&actors.PCAConstructorParams{
-			To: targetAddr,
-		})
-	ApplyOK(t, ret)
-	pch, err := address.NewFromBytes(ret.Return)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	ret, _ = h.SendFunds(t, creatorAddr, pch, types.NewInt(5000))
-	ApplyOK(t, ret)
-
-	sv := &types.SignedVoucher{
-		Amount: types.NewInt(100),
-		Nonce:  1,
-	}
-	signVoucher(t, h.w, creatorAddr, sv)
-
-	ret, _ = h.Invoke(t, targetAddr, pch, actors.PCAMethods.UpdateChannelState, &actors.PCAUpdateChannelStateParams{
-		Sv: *sv,
-	})
-	ApplyOK(t, ret)
-
-	ret, _ = h.Invoke(t, targetAddr, pch, actors.PCAMethods.GetToSend, nil)
-	ApplyOK(t, ret)
-
-	bi := types.BigFromBytes(ret.Return)
-	if bi.String() != "100" {
-		t.Fatal("toSend amount was wrong: ", bi.String())
-	}
-
-	ret, _ = h.Invoke(t, targetAddr, pch, actors.PCAMethods.Close, nil)
-	ApplyOK(t, ret)
-
-	// now we have to 'wait' for the chain to advance.
-	h.BlockHeight = 1000
-
-	ret, _ = h.Invoke(t, targetAddr, pch, actors.PCAMethods.Collect, nil)
-	ApplyOK(t, ret)
-
-	h.AssertBalanceChange(t, targetAddr, 100)
-	h.AssertBalanceChange(t, creatorAddr, -100)
-}
@@ -1,677 +0,0 @@
-package actors
-
-import (
-	"bytes"
-	"context"
-	"sort"
-
-	"go.opencensus.io/trace"
-	"golang.org/x/xerrors"
-
-	"github.com/filecoin-project/go-amt-ipld"
-	"github.com/ipfs/go-cid"
-	"github.com/ipfs/go-hamt-ipld"
-
-	"github.com/filecoin-project/go-address"
-	cborutil "github.com/filecoin-project/go-cbor-util"
-	"github.com/filecoin-project/go-sectorbuilder"
-	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/lib/sigs"
-)
-
-type StorageMarketActor struct{}
-
-type smaMethods struct {
-	Constructor                  uint64
-	WithdrawBalance              uint64
-	AddBalance                   uint64
-	CheckLockedBalance           uint64
-	PublishStorageDeals          uint64
-	HandleCronAction             uint64
-	SettleExpiredDeals           uint64
-	ProcessStorageDealsPayment   uint64
-	SlashStorageDealCollateral   uint64
-	GetLastExpirationFromDealIDs uint64
-	ActivateStorageDeals         uint64
-	ComputeDataCommitment        uint64
-}
-
-var SMAMethods = smaMethods{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
-
-func (sma StorageMarketActor) Exports() []interface{} {
-	return []interface{}{
-		2: sma.WithdrawBalance,
-		3: sma.AddBalance,
-		// 4: sma.CheckLockedBalance,
-		5: sma.PublishStorageDeals,
-		// 6: sma.HandleCronAction,
-		// 7: sma.SettleExpiredDeals,
-		// 8: sma.ProcessStorageDealsPayment,
-		// 9: sma.SlashStorageDealCollateral,
-		// 10: sma.GetLastExpirationFromDealIDs,
-		11: sma.ActivateStorageDeals, // TODO: move under PublishStorageDeals after specs team approves
-		12: sma.ComputeDataCommitment,
-	}
-}
-
-type StorageParticipantBalance struct {
-	Locked    types.BigInt
-	Available types.BigInt
-}
-
-type StorageMarketState struct {
-	Balances cid.Cid // hamt<addr, StorageParticipantBalance>
-	Deals    cid.Cid // amt<StorageDeal>
-
-	NextDealID uint64 // TODO: spec
-}
-
-// TODO: Drop in favour of car storage
-type SerializationMode = uint64
-
-const (
-	SerializationUnixFSv0 = iota
-	// IPLD / car
-)
-
-type StorageDealProposal struct {
-	PieceRef  []byte // cid bytes // TODO: spec says to use cid.Cid, probably not a good idea
-	PieceSize uint64
-
-	Client   address.Address
-	Provider address.Address
-
-	ProposalExpiration uint64
-	Duration           uint64 // TODO: spec
-
-	StoragePricePerEpoch types.BigInt
-	StorageCollateral    types.BigInt
-
-	ProposerSignature *types.Signature
-}
-
-func (sdp *StorageDealProposal) TotalStoragePrice() types.BigInt {
-	return types.BigMul(sdp.StoragePricePerEpoch, types.NewInt(sdp.Duration))
-}
-
-type SignFunc = func(context.Context, []byte) (*types.Signature, error)
-
-func (sdp *StorageDealProposal) Sign(ctx context.Context, sign SignFunc) error {
-	if sdp.ProposerSignature != nil {
-		return xerrors.New("signature already present in StorageDealProposal")
-	}
-	var buf bytes.Buffer
-	if err := sdp.MarshalCBOR(&buf); err != nil {
-		return err
-	}
-	sig, err := sign(ctx, buf.Bytes())
-	if err != nil {
-		return err
-	}
-	sdp.ProposerSignature = sig
-	return nil
-}
-
-func (sdp *StorageDealProposal) Cid() (cid.Cid, error) {
-	nd, err := cborutil.AsIpld(sdp)
-	if err != nil {
-		return cid.Undef, err
-	}
-
-	return nd.Cid(), nil
-}
-
-func (sdp *StorageDealProposal) Verify(worker address.Address) error {
-	if sdp.Client != worker || worker == address.Undef {
-		unsigned := *sdp
-		unsigned.ProposerSignature = nil
-		var buf bytes.Buffer
-		if err := unsigned.MarshalCBOR(&buf); err != nil {
-			return err
-		}
-
-		if err := sigs.Verify(sdp.ProposerSignature, sdp.Client, buf.Bytes()); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type OnChainDeal struct {
-	PieceRef  []byte // cid bytes // TODO: spec says to use cid.Cid, probably not a good idea
-	PieceSize uint64
-
-	Client   address.Address
-	Provider address.Address
-
-	ProposalExpiration uint64
-	Duration           uint64 // TODO: spec
-
-	StoragePricePerEpoch types.BigInt
-	StorageCollateral    types.BigInt
-	ActivationEpoch      uint64 // 0 = inactive
-}
-
-type WithdrawBalanceParams struct {
-	Balance types.BigInt
-}
-
-func (sma StorageMarketActor) WithdrawBalance(act *types.Actor, vmctx types.VMContext, params *WithdrawBalanceParams) ([]byte, ActorError) {
-	// TODO: (spec) this should be 2-stage
-
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	b, bnd, err := GetMarketBalances(vmctx.Context(), vmctx.Ipld(), self.Balances, vmctx.Message().From)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "could not get balance")
-	}
-
-	balance := b[0]
-
-	if balance.Available.LessThan(params.Balance) {
-		return nil, aerrors.Newf(1, "can not withdraw more funds than available: %s > %s", params.Balance, b[0].Available)
-	}
-
-	balance.Available = types.BigSub(balance.Available, params.Balance)
-
-	_, err = vmctx.Send(vmctx.Message().From, 0, params.Balance, nil)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "sending funds failed")
-	}
-
-	bcid, err := setMarketBalances(vmctx, bnd, map[address.Address]StorageParticipantBalance{
-		vmctx.Message().From: balance,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	self.Balances = bcid
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	return nil, vmctx.Storage().Commit(old, nroot)
-}
-
-func (sma StorageMarketActor) AddBalance(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	b, bnd, err := GetMarketBalances(vmctx.Context(), vmctx.Ipld(), self.Balances, vmctx.Message().From)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "could not get balance")
-	}
-
-	balance := b[0]
-
-	balance.Available = types.BigAdd(balance.Available, vmctx.Message().Value)
-
-	bcid, err := setMarketBalances(vmctx, bnd, map[address.Address]StorageParticipantBalance{
-		vmctx.Message().From: balance,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	self.Balances = bcid
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	return nil, vmctx.Storage().Commit(old, nroot)
-}
-
-func setMarketBalances(vmctx types.VMContext, nd *hamt.Node, set map[address.Address]StorageParticipantBalance) (cid.Cid, ActorError) {
-	keys := make([]address.Address, 0, len(set))
-	for k := range set {
-		keys = append(keys, k)
-	}
-	sort.Slice(keys, func(i, j int) bool {
-		return bytes.Compare(keys[i].Bytes(), keys[j].Bytes()) < 0
-	})
-	for _, addr := range keys {
-		balance := set[addr]
-		if err := nd.Set(vmctx.Context(), string(addr.Bytes()), &balance); err != nil {
-			return cid.Undef, aerrors.HandleExternalError(err, "setting new balance")
-		}
-	}
-	if err := nd.Flush(vmctx.Context()); err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "flushing balance hamt")
-	}
-
-	c, err := vmctx.Ipld().Put(vmctx.Context(), nd)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to balances storage")
-	}
-	return c, nil
-}
-
-func GetMarketBalances(ctx context.Context, store *hamt.CborIpldStore, rcid cid.Cid, addrs ...address.Address) ([]StorageParticipantBalance, *hamt.Node, ActorError) {
-	ctx, span := trace.StartSpan(ctx, "GetMarketBalances")
-	defer span.End()
-
-	nd, err := hamt.LoadNode(ctx, store, rcid)
-	if err != nil {
-		return nil, nil, aerrors.HandleExternalError(err, "failed to load miner set")
-	}
-
-	out := make([]StorageParticipantBalance, len(addrs))
-
-	for i, a := range addrs {
-		var balance StorageParticipantBalance
-		err = nd.Find(ctx, string(a.Bytes()), &balance)
-		switch err {
-		case hamt.ErrNotFound:
-			out[i] = StorageParticipantBalance{
-				Locked:    types.NewInt(0),
-				Available: types.NewInt(0),
-			}
-		case nil:
-			out[i] = balance
-		default:
-			return nil, nil, aerrors.HandleExternalError(err, "failed to do set lookup")
-		}
-
-	}
-
-	return out, nd, nil
-}
-
-/*
-func (sma StorageMarketActor) CheckLockedBalance(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-
-}
-*/
-
-type PublishStorageDealsParams struct {
-	Deals []StorageDealProposal
-}
-
-type PublishStorageDealResponse struct {
-	DealIDs []uint64
-}
-
-func (sma StorageMarketActor) PublishStorageDeals(act *types.Actor, vmctx types.VMContext, params *PublishStorageDealsParams) ([]byte, ActorError) {
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	deals, err := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Deals)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "loading deals amt")
-	}
-
-	// todo: handle duplicate deals
-
-	if len(params.Deals) == 0 {
-		return nil, aerrors.New(1, "no storage deals in params.Deals")
-	}
-
-	out := PublishStorageDealResponse{
-		DealIDs: make([]uint64, len(params.Deals)),
-	}
-
-	workerBytes, aerr := vmctx.Send(params.Deals[0].Provider, MAMethods.GetWorkerAddr, types.NewInt(0), nil)
-	if aerr != nil {
-		return nil, aerr
-	}
-	providerWorker, err := address.NewFromBytes(workerBytes)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "parsing provider worker address bytes")
-	}
-
-	// TODO: REVIEW: Do we want to check if provider exists in the power actor?
-
-	for i, deal := range params.Deals {
-		if err := self.validateDeal(vmctx, deal, providerWorker); err != nil {
-			return nil, err
-		}
-
-		err := deals.Set(self.NextDealID, &OnChainDeal{
-			PieceRef:  deal.PieceRef,
-			PieceSize: deal.PieceSize,
-
-			Client:   deal.Client,
-			Provider: deal.Provider,
-
-			ProposalExpiration: deal.ProposalExpiration,
-			Duration:           deal.Duration,
-
-			StoragePricePerEpoch: deal.StoragePricePerEpoch,
-			StorageCollateral:    deal.StorageCollateral,
-			ActivationEpoch:      0,
-		})
-		if err != nil {
-			return nil, aerrors.HandleExternalError(err, "setting deal in deal AMT")
-		}
-		out.DealIDs[i] = self.NextDealID
-
-		self.NextDealID++
-	}
-
-	dealsCid, err := deals.Flush()
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "saving deals AMT")
-	}
-
-	self.Deals = dealsCid
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "storing state failed")
-	}
-
-	aerr = vmctx.Storage().Commit(old, nroot)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	var outBuf bytes.Buffer
-	if err := out.MarshalCBOR(&outBuf); err != nil {
-		return nil, aerrors.HandleExternalError(err, "serialising output")
-	}
-
-	return outBuf.Bytes(), nil
-}
-
-func (st *StorageMarketState) validateDeal(vmctx types.VMContext, deal StorageDealProposal, providerWorker address.Address) aerrors.ActorError {
-	ctx, span := trace.StartSpan(vmctx.Context(), "validateDeal")
-	defer span.End()
-
-	if vmctx.BlockHeight() > deal.ProposalExpiration {
-		return aerrors.New(1, "deal proposal already expired")
-	}
-
-	if vmctx.Message().From != providerWorker {
-		return aerrors.New(2, "Deals must be submitted by the miner worker")
-	}
-
-	if err := deal.Verify(providerWorker); err != nil {
-		return aerrors.Absorb(err, 3, "verifying proposer signature")
-	}
-
-	// TODO: do some caching (changes gas so needs to be in spec too)
-	b, bnd, aerr := GetMarketBalances(ctx, vmctx.Ipld(), st.Balances, deal.Client, providerWorker)
-	if aerr != nil {
-		return aerrors.Wrap(aerr, "getting client, and provider balances")
-	}
-	clientBalance := b[0]
-	providerBalance := b[1]
-
-	totalPrice := deal.TotalStoragePrice()
-
-	if clientBalance.Available.LessThan(totalPrice) {
-		return aerrors.Newf(5, "client doesn't have enough available funds to cover storage price; %d < %d", clientBalance.Available, totalPrice)
-	}
-
-	clientBalance = lockFunds(clientBalance, totalPrice)
-
-	// TODO: REVIEW: Not clear who pays for this
-	if providerBalance.Available.LessThan(deal.StorageCollateral) {
-		return aerrors.Newf(6, "provider doesn't have enough available funds to cover StorageCollateral; %d < %d", providerBalance.Available, deal.StorageCollateral)
-	}
-
-	providerBalance = lockFunds(providerBalance, deal.StorageCollateral)
-
-	// TODO: piece checks (e.g. size > sectorSize)?
-
-	bcid, aerr := setMarketBalances(vmctx, bnd, map[address.Address]StorageParticipantBalance{
-		deal.Client:    clientBalance,
-		providerWorker: providerBalance,
-	})
-	if aerr != nil {
-		return aerr
-	}
-
-	st.Balances = bcid
-
-	return nil
-}
-
-type ActivateStorageDealsParams struct {
-	Deals []uint64
-}
-
-func (sma StorageMarketActor) ActivateStorageDeals(act *types.Actor, vmctx types.VMContext, params *ActivateStorageDealsParams) ([]byte, ActorError) {
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	deals, err := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Deals)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "loading deals amt")
-	}
-
-	for _, deal := range params.Deals {
-		var dealInfo OnChainDeal
-		if err := deals.Get(deal, &dealInfo); err != nil {
-			if _, is := err.(*amt.ErrNotFound); is {
-				return nil, aerrors.New(3, "deal not found")
-			}
-			return nil, aerrors.HandleExternalError(err, "getting deal info failed")
-		}
-
-		if vmctx.Message().From != dealInfo.Provider {
-			return nil, aerrors.New(1, "ActivateStorageDeals can only be called by the deal provider")
-		}
-
-		if vmctx.BlockHeight() > dealInfo.ProposalExpiration {
-			return nil, aerrors.New(2, "deal cannot be activated: proposal expired")
-		}
-
-		if dealInfo.ActivationEpoch > 0 {
-			// this probably can't happen in practice
-			return nil, aerrors.New(3, "deal already active")
-		}
-
-		dealInfo.ActivationEpoch = vmctx.BlockHeight()
-
-		if err := deals.Set(deal, &dealInfo); err != nil {
-			return nil, aerrors.HandleExternalError(err, "setting deal info in AMT failed")
-		}
-	}
-
-	dealsCid, err := deals.Flush()
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "saving deals AMT")
-	}
-
-	self.Deals = dealsCid
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "storing state failed")
-	}
-
-	aerr := vmctx.Storage().Commit(old, nroot)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	return nil, nil
-}
-
-type ProcessStorageDealsPaymentParams struct {
-	DealIDs []uint64
-}
-
-func (sma StorageMarketActor) ProcessStorageDealsPayment(act *types.Actor, vmctx types.VMContext, params *ProcessStorageDealsPaymentParams) ([]byte, ActorError) {
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	deals, err := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Deals)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "loading deals amt")
-	}
-
-	// TODO: Would be nice if send could assert actor type
-	workerBytes, aerr := vmctx.Send(vmctx.Message().From, MAMethods.GetWorkerAddr, types.NewInt(0), nil)
-	if aerr != nil {
-		return nil, aerr
-	}
-	providerWorker, err := address.NewFromBytes(workerBytes)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "parsing provider worker address bytes")
-	}
-
-	for _, deal := range params.DealIDs {
-		var dealInfo OnChainDeal
-		if err := deals.Get(deal, &dealInfo); err != nil {
-			if _, is := err.(*amt.ErrNotFound); is {
-				return nil, aerrors.New(2, "deal not found")
-			}
-			return nil, aerrors.HandleExternalError(err, "getting deal info failed")
-		}
-
-		if dealInfo.Provider != vmctx.Message().From {
-			return nil, aerrors.New(3, "ProcessStorageDealsPayment can only be called by deal provider")
-		}
-
-		if vmctx.BlockHeight() < dealInfo.ActivationEpoch {
-			// TODO: This is probably fatal
-			return nil, aerrors.New(4, "ActivationEpoch lower than block height")
-		}
-
-		if vmctx.BlockHeight() > dealInfo.ActivationEpoch+dealInfo.Duration {
-			// Deal expired, miner should drop it
-			// TODO: process payment for the remainder of last proving period
-			return nil, nil
-		}
-
-		toPay := types.BigMul(dealInfo.StoragePricePerEpoch, types.NewInt(build.SlashablePowerDelay))
-
-		b, bnd, aerr := GetMarketBalances(vmctx.Context(), vmctx.Ipld(), self.Balances, dealInfo.Client, providerWorker)
-		if aerr != nil {
-			return nil, aerr
-		}
-		clientBal := b[0]
-		providerBal := b[1]
-
-		clientBal.Locked, providerBal.Available = transferFunds(clientBal.Locked, providerBal.Available, toPay)
-
-		// TODO: call set once
-		bcid, aerr := setMarketBalances(vmctx, bnd, map[address.Address]StorageParticipantBalance{
-			dealInfo.Client: clientBal,
-			providerWorker:  providerBal,
-		})
-		if aerr != nil {
-			return nil, aerr
-		}
-
-		self.Balances = bcid
-	}
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "storing state failed")
-	}
-
-	aerr = vmctx.Storage().Commit(old, nroot)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	return nil, nil
-}
-
-func lockFunds(p StorageParticipantBalance, amt types.BigInt) StorageParticipantBalance {
-	p.Available, p.Locked = transferFunds(p.Available, p.Locked, amt)
-	return p
-}
-
-func transferFunds(from, to, amt types.BigInt) (types.BigInt, types.BigInt) {
-	// TODO: some asserts
-	return types.BigSub(from, amt), types.BigAdd(to, amt)
-}
-
-type ComputeDataCommitmentParams struct {
-	DealIDs    []uint64
-	SectorSize uint64
-}
-
-func (sma StorageMarketActor) ComputeDataCommitment(act *types.Actor, vmctx types.VMContext, params *ComputeDataCommitmentParams) ([]byte, ActorError) {
-	var self StorageMarketState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	deals, err := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.Deals)
-	if err != nil {
-		return nil, aerrors.HandleExternalError(err, "loading deals amt")
-	}
-
-	if len(params.DealIDs) == 0 {
-		return nil, aerrors.New(3, "no deal IDs")
-	}
-
-	var pieces []sectorbuilder.PublicPieceInfo
-	for _, deal := range params.DealIDs {
-		var dealInfo OnChainDeal
-		if err := deals.Get(deal, &dealInfo); err != nil {
-			if _, is := err.(*amt.ErrNotFound); is {
-				return nil, aerrors.New(4, "deal not found")
-			}
-			return nil, aerrors.HandleExternalError(err, "getting deal info failed")
-		}
-
-		if dealInfo.Provider != vmctx.Message().From {
-			return nil, aerrors.New(5, "referenced deal was not from caller")
-		}
-
-		var commP [32]byte
-		copy(commP[:], dealInfo.PieceRef)
-
-		pieces = append(pieces, sectorbuilder.PublicPieceInfo{
-			Size:  dealInfo.PieceSize,
-			CommP: commP,
-		})
-	}
-
-	commd, err := sectorbuilder.GenerateDataCommitment(params.SectorSize, pieces)
-	if err != nil {
-		return nil, aerrors.Absorb(err, 6, "failed to generate data commitment from pieces")
-	}
-
-	return commd[:], nil
-}
-
-/*
-func (sma StorageMarketActor) HandleCronAction(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-
-}
-
-func (sma StorageMarketActor) SettleExpiredDeals(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-
-}
-
-func (sma StorageMarketActor) SlashStorageDealCollateral(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-
-}
-
-func (sma StorageMarketActor) GetLastExpirationFromDealIDs(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-
-}
-*/
@@ -1,858 +0,0 @@
-package actors
-
-import (
-	"bytes"
-	"context"
-	"io"
-
-	"github.com/filecoin-project/go-amt-ipld"
-	cid "github.com/ipfs/go-cid"
-	hamt "github.com/ipfs/go-hamt-ipld"
-	"github.com/libp2p/go-libp2p-core/peer"
-	cbg "github.com/whyrusleeping/cbor-gen"
-	"go.opencensus.io/trace"
-	xerrors "golang.org/x/xerrors"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/lib/sigs"
-)
-
-type StoragePowerActor struct{}
-
-type spaMethods struct {
-	Constructor             uint64
-	CreateStorageMiner      uint64
-	ArbitrateConsensusFault uint64
-	UpdateStorage           uint64
-	GetTotalStorage         uint64
-	PowerLookup             uint64
-	IsValidMiner            uint64
-	PledgeCollateralForSize uint64
-	CheckProofSubmissions   uint64
-}
-
-var SPAMethods = spaMethods{1, 2, 3, 4, 5, 6, 7, 8, 9}
-
-func (spa StoragePowerActor) Exports() []interface{} {
-	return []interface{}{
-		//1: spa.StoragePowerConstructor,
-		2: spa.CreateStorageMiner,
-		3: spa.ArbitrateConsensusFault,
-		4: spa.UpdateStorage,
-		5: spa.GetTotalStorage,
-		6: spa.PowerLookup,
-		7: spa.IsValidMiner,
-		8: spa.PledgeCollateralForSize,
-		9: spa.CheckProofSubmissions,
-	}
-}
-
-type StoragePowerState struct {
-	Miners         cid.Cid
-	ProvingBuckets cid.Cid // amt[ProvingPeriodBucket]hamt[minerAddress]struct{}
-	MinerCount     uint64
-	LastMinerCheck uint64
-
-	TotalStorage types.BigInt
-}
-
-type CreateStorageMinerParams struct {
-	Owner      address.Address
-	Worker     address.Address
-	SectorSize uint64
-	PeerID     peer.ID
-}
-
-func (spa StoragePowerActor) CreateStorageMiner(act *types.Actor, vmctx types.VMContext, params *CreateStorageMinerParams) ([]byte, ActorError) {
-	if !build.SupportedSectorSize(params.SectorSize) {
-		return nil, aerrors.Newf(1, "Unsupported sector size: %d", params.SectorSize)
-	}
-
-	var self StoragePowerState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	reqColl, err := pledgeCollateralForSize(vmctx, types.NewInt(0), self.TotalStorage, self.MinerCount+1)
-	if err != nil {
-		return nil, err
-	}
-
-	if vmctx.Message().Value.LessThan(reqColl) {
-		return nil, aerrors.Newf(1, "not enough funds passed to cover required miner collateral (needed %s, got %s)", reqColl, vmctx.Message().Value)
-	}
-
-	// FORK
-	minerCid := StorageMinerCodeCid
-	if vmctx.BlockHeight() > build.ForkFrigidHeight {
-		minerCid = StorageMiner2CodeCid
-	}
-
-	encoded, err := CreateExecParams(minerCid, &StorageMinerConstructorParams{
-		Owner:      params.Owner,
-		Worker:     params.Worker,
-		SectorSize: params.SectorSize,
-		PeerID:     params.PeerID,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	ret, err := vmctx.Send(InitAddress, IAMethods.Exec, vmctx.Message().Value, encoded)
-	if err != nil {
-		return nil, err
-	}
-
-	naddr, nerr := address.NewFromBytes(ret)
-	if nerr != nil {
-		return nil, aerrors.Absorb(nerr, 2, "could not read address of new actor")
-	}
-
-	ncid, err := MinerSetAdd(context.TODO(), vmctx, self.Miners, naddr)
-	if err != nil {
-		return nil, err
-	}
-	self.Miners = ncid
-	self.MinerCount++
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(old, nroot); err != nil {
-		return nil, err
-	}
-
-	return naddr.Bytes(), nil
-}
-
-type ArbitrateConsensusFaultParams struct {
-	Block1 *types.BlockHeader
-	Block2 *types.BlockHeader
-}
-
-func (spa StoragePowerActor) ArbitrateConsensusFault(act *types.Actor, vmctx types.VMContext, params *ArbitrateConsensusFaultParams) ([]byte, ActorError) {
-	if params == nil || params.Block1 == nil || params.Block2 == nil {
-		return nil, aerrors.New(1, "failed to parse params")
-	}
-
-	if params.Block1.Miner != params.Block2.Miner {
-		return nil, aerrors.New(2, "blocks must be from the same miner")
-	}
-
-	// FORK
-	if vmctx.BlockHeight() > build.ForkBlizzardHeight {
-		if params.Block1.Height <= build.ForkBlizzardHeight {
-			return nil, aerrors.New(10, "cannot slash miners with blocks from before blizzard")
-		}
-
-		if params.Block2.Height <= build.ForkBlizzardHeight {
-			return nil, aerrors.New(11, "cannot slash miners with blocks from before blizzard")
-		}
-
-		if params.Block1.Cid() == params.Block2.Cid() {
-			return nil, aerrors.New(3, "blocks must be different")
-		}
-	}
-
-	rval, err := vmctx.Send(params.Block1.Miner, MAMethods.GetWorkerAddr, types.NewInt(0), nil)
-	if err != nil {
-		return nil, aerrors.Wrap(err, "failed to get miner worker")
-	}
-
-	worker, oerr := address.NewFromBytes(rval)
-	if oerr != nil {
-		// REVIEW: should this be fatal? i can't think of a real situation that would get us here
-		return nil, aerrors.Absorb(oerr, 3, "response from 'GetWorkerAddr' was not a valid address")
-	}
-
-	if err := sigs.CheckBlockSignature(params.Block1, vmctx.Context(), worker); err != nil {
-		return nil, aerrors.Absorb(err, 4, "block1 did not have valid signature")
-	}
-
-	if err := sigs.CheckBlockSignature(params.Block2, vmctx.Context(), worker); err != nil {
-		return nil, aerrors.Absorb(err, 5, "block2 did not have valid signature")
-	}
-
-	// see the "Consensus Faults" section of the faults spec (faults.md)
-	// for details on these slashing conditions.
-	if !shouldSlash(params.Block1, params.Block2) {
-		return nil, aerrors.New(6, "blocks do not prove a slashable offense")
-	}
-
-	var self StoragePowerState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	if types.BigCmp(self.TotalStorage, types.NewInt(0)) == 0 {
-		return nil, aerrors.Fatal("invalid state, storage power actor has zero total storage")
-	}
-
-	miner := params.Block1.Miner
-	if has, err := MinerSetHas(vmctx, self.Miners, miner); err != nil {
-		return nil, aerrors.Wrapf(err, "failed to check miner in set")
-	} else if !has {
-		return nil, aerrors.New(7, "either already slashed or not a miner")
-	}
-
-	minerPower, err := powerLookup(context.TODO(), vmctx, &self, miner)
-	if err != nil {
-		return nil, err
-	}
-
-	slashedCollateral, err := pledgeCollateralForSize(vmctx, minerPower, self.TotalStorage, self.MinerCount)
-	if err != nil {
-		return nil, err
-	}
-
-	enc, err := SerializeParams(&MinerSlashConsensusFault{
-		Slasher:           vmctx.Message().From,
-		AtHeight:          params.Block1.Height,
-		SlashedCollateral: slashedCollateral,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	_, err = vmctx.Send(miner, MAMethods.SlashConsensusFault, types.NewInt(0), enc)
-	if err != nil {
-		return nil, err
-	}
-
-	// Remove the miner from the list of network miners
-	ncid, err := MinerSetRemove(context.TODO(), vmctx, self.Miners, miner)
-	if err != nil {
-		return nil, err
-	}
-	self.Miners = ncid
-	self.MinerCount--
-
-	self.TotalStorage = types.BigSub(self.TotalStorage, minerPower)
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(old, nroot); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func cidArrContains(a []cid.Cid, b cid.Cid) bool {
-	for _, c := range a {
-		if b == c {
-			return true
-		}
-	}
-
-	return false
-}
-
-func shouldSlash(block1, block2 *types.BlockHeader) bool {
-	// First slashing condition, blocks have the same ticket round
-	if block1.Height == block2.Height {
-		return true
-	}
-
-	/* Second slashing condition requires having access to the parent tipset blocks
-	// This might not always be available, needs some thought on the best way to deal with this
-
-
-	// Second slashing condition, miner ignored own block when mining
-	// Case A: block2 could have been in block1's parent set but is not
-	b1ParentHeight := block1.Height - len(block1.Tickets)
-
-	block1ParentTipSet := block1.Parents
-	if !cidArrContains(block1.Parents, block2.Cid()) &&
-		b1ParentHeight == block2.Height &&
-		block1ParentTipSet.ParentCids == block2.ParentCids {
-		return true
-	}
-
-	// Case B: block1 could have been in block2's parent set but is not
-	block2ParentTipSet := parentOf(block2)
-	if !block2Parent.contains(block1) &&
-		block2ParentTipSet.Height == block1.Height &&
-		block2ParentTipSet.ParentCids == block1.ParentCids {
-		return true
-	}
-
-	*/
-
-	return false
-}
-
-type UpdateStorageParams struct {
-	Delta                 types.BigInt
-	NextSlashDeadline     uint64
-	PreviousSlashDeadline uint64
-}
-
-func (spa StoragePowerActor) UpdateStorage(act *types.Actor, vmctx types.VMContext, params *UpdateStorageParams) ([]byte, ActorError) {
-	var self StoragePowerState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	has, err := MinerSetHas(vmctx, self.Miners, vmctx.Message().From)
-	if err != nil {
-		return nil, err
-	}
-	if !has {
-		return nil, aerrors.New(1, "update storage must only be called by a miner actor")
-	}
-
-	self.TotalStorage = types.BigAdd(self.TotalStorage, params.Delta)
-
-	previousBucket := params.PreviousSlashDeadline % build.SlashablePowerDelay
-	nextBucket := params.NextSlashDeadline % build.SlashablePowerDelay
-
-	if previousBucket == nextBucket && params.PreviousSlashDeadline != 0 {
-		nroot, err := vmctx.Storage().Put(&self)
-		if err != nil {
-			return nil, err
-		}
-
-		if err := vmctx.Storage().Commit(old, nroot); err != nil {
-			return nil, err
-		}
-
-		return nil, nil // Nothing to do
-	}
-
-	buckets, eerr := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingBuckets)
-	if eerr != nil {
-		return nil, aerrors.HandleExternalError(eerr, "loading proving buckets amt")
-	}
-
-	if params.PreviousSlashDeadline != 0 { // delete from previous bucket
-		err := deleteMinerFromBucket(vmctx, buckets, previousBucket)
-		if err != nil {
-			return nil, aerrors.Wrapf(err, "delete from bucket %d, next %d", previousBucket, nextBucket)
-		}
-	}
-
-	err = addMinerToBucket(vmctx, buckets, nextBucket)
-	if err != nil {
-		return nil, err
-	}
-
-	self.ProvingBuckets, eerr = buckets.Flush()
-	if eerr != nil {
-		return nil, aerrors.HandleExternalError(eerr, "flushing proving buckets")
-	}
-
-	nroot, err := vmctx.Storage().Put(&self)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := vmctx.Storage().Commit(old, nroot); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func deleteMinerFromBucket(vmctx types.VMContext, buckets *amt.Root, previousBucket uint64) aerrors.ActorError {
-	var bucket cid.Cid
-	err := buckets.Get(previousBucket, &bucket)
-	switch err.(type) {
-	case *amt.ErrNotFound:
-		return aerrors.HandleExternalError(err, "proving bucket missing")
-	case nil: // noop
-	default:
-		return aerrors.HandleExternalError(err, "getting proving bucket")
-	}
-
-	bhamt, err := hamt.LoadNode(vmctx.Context(), vmctx.Ipld(), bucket)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "failed to load proving bucket")
-	}
-	err = bhamt.Delete(vmctx.Context(), string(vmctx.Message().From.Bytes()))
-	if err != nil {
-		return aerrors.HandleExternalError(err, "deleting miner from proving bucket")
-	}
-
-	err = bhamt.Flush(vmctx.Context())
-	if err != nil {
-		return aerrors.HandleExternalError(err, "flushing previous proving bucket")
-	}
-
-	bucket, err = vmctx.Ipld().Put(vmctx.Context(), bhamt)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "putting previous proving bucket hamt")
-	}
-
-	err = buckets.Set(previousBucket, bucket)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "setting previous proving bucket cid in amt")
-	}
-
-	return nil
-}
-
-func addMinerToBucket(vmctx types.VMContext, buckets *amt.Root, nextBucket uint64) aerrors.ActorError {
-	var bhamt *hamt.Node
-	var bucket cid.Cid
-	err := buckets.Get(nextBucket, &bucket)
-	switch err.(type) {
-	case *amt.ErrNotFound:
-		bhamt = hamt.NewNode(vmctx.Ipld())
-	case nil:
-		bhamt, err = hamt.LoadNode(vmctx.Context(), vmctx.Ipld(), bucket)
-		if err != nil {
-			return aerrors.HandleExternalError(err, "failed to load proving bucket")
-		}
-	default:
-		return aerrors.HandleExternalError(err, "getting proving bucket")
-	}
-
-	err = bhamt.Set(vmctx.Context(), string(vmctx.Message().From.Bytes()), CborNull)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "setting miner in proving bucket")
-	}
-
-	err = bhamt.Flush(vmctx.Context())
-	if err != nil {
-		return aerrors.HandleExternalError(err, "flushing previous proving bucket")
-	}
-
-	bucket, err = vmctx.Ipld().Put(vmctx.Context(), bhamt)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "putting previous proving bucket hamt")
-	}
-
-	err = buckets.Set(nextBucket, bucket)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "setting previous proving bucket cid in amt")
-	}
-	return nil
-}
-
-func (spa StoragePowerActor) GetTotalStorage(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
-	var self StoragePowerState
-	if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
-		return nil, err
-	}
-
-	return self.TotalStorage.Bytes(), nil
-}
-
-type PowerLookupParams struct {
-	Miner address.Address
-}
-
-func (spa StoragePowerActor) PowerLookup(act *types.Actor, vmctx types.VMContext, params *PowerLookupParams) ([]byte, ActorError) {
-	var self StoragePowerState
-	if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
-		return nil, aerrors.Wrap(err, "getting head")
-	}
-
-	pow, err := powerLookup(context.TODO(), vmctx, &self, params.Miner)
-	if err != nil {
-		return nil, err
-	}
-
-	return pow.Bytes(), nil
-}
-
-func powerLookup(ctx context.Context, vmctx types.VMContext, self *StoragePowerState, miner address.Address) (types.BigInt, ActorError) {
-	has, err := MinerSetHas(vmctx, self.Miners, miner)
-	if err != nil {
-		return types.EmptyInt, err
-	}
-
-	if !has {
-		// A miner could be registered with storage power actor, but removed for some reasons, e.g. consensus fault
-		return types.EmptyInt, aerrors.New(1, "miner not registered with storage power actor, or removed already")
-	}
-
-	// TODO: Use local amt
-	ret, err := vmctx.Send(miner, MAMethods.GetPower, types.NewInt(0), nil)
-	if err != nil {
-		return types.EmptyInt, aerrors.Wrap(err, "invoke Miner.GetPower")
-	}
-
-	return types.BigFromBytes(ret), nil
-}
-
-type IsValidMinerParam struct {
-	Addr address.Address
-}
-
-func (spa StoragePowerActor) IsValidMiner(act *types.Actor, vmctx types.VMContext, param *IsValidMinerParam) ([]byte, ActorError) {
-	var self StoragePowerState
-	if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
-		return nil, err
-	}
-
-	has, err := MinerSetHas(vmctx, self.Miners, param.Addr)
-	if err != nil {
-		return nil, err
-	}
-
-	if !has {
-		log.Warnf("Miner INVALID: not in set: %s", param.Addr)
-
-		return cbg.CborBoolFalse, nil
-	}
-
-	ret, err := vmctx.Send(param.Addr, MAMethods.IsSlashed, types.NewInt(0), nil)
-	if err != nil {
-		return nil, err
-	}
-
-	slashed := bytes.Equal(ret, cbg.CborBoolTrue)
-
-	if slashed {
-		log.Warnf("Miner INVALID: /SLASHED/ : %s", param.Addr)
-	}
-
-	return cbg.EncodeBool(!slashed), nil
-}
-
-type PledgeCollateralParams struct {
-	Size types.BigInt
-}
-
-func (spa StoragePowerActor) PledgeCollateralForSize(act *types.Actor, vmctx types.VMContext, param *PledgeCollateralParams) ([]byte, ActorError) {
-	var self StoragePowerState
-	if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
-		return nil, err
-	}
-
-	totalCollateral, err := pledgeCollateralForSize(vmctx, param.Size, self.TotalStorage, self.MinerCount)
-	if err != nil {
-		return nil, err
-	}
-
-	return totalCollateral.Bytes(), nil
-}
-
-func pledgeCollateralForSize(vmctx types.VMContext, size, totalStorage types.BigInt, minerCount uint64) (types.BigInt, aerrors.ActorError) {
-	netBalance, err := vmctx.GetBalance(NetworkAddress)
-	if err != nil {
-		return types.EmptyInt, err
-	}
-
-	// TODO: the spec says to also grab 'total vested filecoin' and include it as available
-	// If we don't factor that in, we effectively assume all of the locked up filecoin is 'available'
-	// the blocker on that right now is that its hard to tell how much filecoin is unlocked
-
-	availableFilecoin := types.BigSub(
-		types.BigMul(types.NewInt(build.TotalFilecoin), types.NewInt(build.FilecoinPrecision)),
-		netBalance,
-	)
-
-	totalPowerCollateral := types.BigDiv(
-		types.BigMul(
-			availableFilecoin,
-			types.NewInt(build.PowerCollateralProportion),
-		),
-		types.NewInt(build.CollateralPrecision),
-	)
-
-	totalPerCapitaCollateral := types.BigDiv(
-		types.BigMul(
-			availableFilecoin,
-			types.NewInt(build.PerCapitaCollateralProportion),
-		),
-		types.NewInt(build.CollateralPrecision),
-	)
-
-	// REVIEW: for bootstrapping purposes, we skip the power portion of the
-	// collateral if there is no collateral in the network yet
-	powerCollateral := types.NewInt(0)
-	if types.BigCmp(totalStorage, types.NewInt(0)) != 0 {
-		powerCollateral = types.BigDiv(
-			types.BigMul(
-				totalPowerCollateral,
-				size,
-			),
-			totalStorage,
-		)
-	}
-
-	perCapCollateral := types.BigDiv(
-		totalPerCapitaCollateral,
-		types.NewInt(minerCount),
-	)
-
-	return types.BigAdd(powerCollateral, perCapCollateral), nil
-}
-
-func (spa StoragePowerActor) CheckProofSubmissions(act *types.Actor, vmctx types.VMContext, param *struct{}) ([]byte, ActorError) {
-	if vmctx.Message().From != CronAddress {
-		return nil, aerrors.New(1, "CheckProofSubmissions is only callable from the cron actor")
-	}
-
-	var self StoragePowerState
-	old := vmctx.Storage().GetHead()
-	if err := vmctx.Storage().Get(old, &self); err != nil {
-		return nil, err
-	}
-
-	for i := self.LastMinerCheck; i < vmctx.BlockHeight(); i++ {
-		height := i + 1
-
-		err := checkProofSubmissionsAtH(vmctx, &self, height)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	self.LastMinerCheck = vmctx.BlockHeight()
-
-	nroot, aerr := vmctx.Storage().Put(&self)
-	if aerr != nil {
-		return nil, aerr
-	}
-
-	if err := vmctx.Storage().Commit(old, nroot); err != nil {
-		return nil, err
-	}
-
-	return nil, nil
-}
-
-func checkProofSubmissionsAtH(vmctx types.VMContext, self *StoragePowerState, height uint64) aerrors.ActorError {
-	bucketID := height % build.SlashablePowerDelay
-
-	buckets, eerr := amt.LoadAMT(types.WrapStorage(vmctx.Storage()), self.ProvingBuckets)
-	if eerr != nil {
-		return aerrors.HandleExternalError(eerr, "loading proving buckets amt")
-	}
-
-	var bucket cid.Cid
-	err := buckets.Get(bucketID, &bucket)
-	switch err.(type) {
-	case *amt.ErrNotFound:
-		return nil // nothing to do
-	case nil:
-	default:
-		return aerrors.HandleExternalError(err, "getting proving bucket")
-	}
-
-	bhamt, err := hamt.LoadNode(vmctx.Context(), vmctx.Ipld(), bucket)
-	if err != nil {
-		return aerrors.HandleExternalError(err, "failed to load proving bucket")
-	}
-
-	forRemoval := make([]address.Address, 0)
-
-	err = bhamt.ForEach(vmctx.Context(), func(k string, val interface{}) error {
-		_, span := trace.StartSpan(vmctx.Context(), "StoragePowerActor.CheckProofSubmissions.loop")
-		defer span.End()
-
-		maddr, err := address.NewFromBytes([]byte(k))
-		if err != nil {
-			return aerrors.Escalate(err, "parsing miner address")
-		}
-
-		if vmctx.BlockHeight() > build.ForkMissingSnowballs {
-			has, aerr := MinerSetHas(vmctx, self.Miners, maddr)
-			if aerr != nil {
-				return aerr
-			}
-
-			if !has {
-				forRemoval = append(forRemoval, maddr)
-			}
-
-		}
-
-		span.AddAttributes(trace.StringAttribute("miner", maddr.String()))
-
-		params, err := SerializeParams(&CheckMinerParams{NetworkPower: self.TotalStorage})
-		if err != nil {
-			return err
-		}
-
-		ret, err := vmctx.Send(maddr, MAMethods.CheckMiner, types.NewInt(0), params)
-		if err != nil {
-			return err
-		}
-
-		if len(ret) == 0 {
-			return nil // miner is fine
-		}
-
-		var power types.BigInt
-		if err := power.UnmarshalCBOR(bytes.NewReader(ret)); err != nil {
-			return xerrors.Errorf("unmarshaling CheckMiner response (%x): %w", ret, err)
-		}
-
-		if power.GreaterThan(types.NewInt(0)) {
-			log.Warnf("slashing miner %s for missed PoSt (%s B, H: %d, Bucket: %d)", maddr, power, height, bucketID)
-
-			self.TotalStorage = types.BigSub(self.TotalStorage, power)
-		}
-		return nil
-	})
-
-	if err != nil {
-		return aerrors.HandleExternalError(err, "iterating miners in proving bucket")
-	}
-
-	if vmctx.BlockHeight() > build.ForkMissingSnowballs && len(forRemoval) > 0 {
-		nBucket, err := MinerSetRemove(vmctx.Context(), vmctx, bucket, forRemoval...)
-
-		if err != nil {
-			return aerrors.Wrap(err, "could not remove miners from set")
-		}
-
-		eerr := buckets.Set(bucketID, nBucket)
-		if err != nil {
-			return aerrors.HandleExternalError(eerr, "could not set the bucket")
-		}
-		ncid, eerr := buckets.Flush()
-		if err != nil {
-			return aerrors.HandleExternalError(eerr, "could not flush buckets")
-		}
-		self.ProvingBuckets = ncid
-	}
-
-	return nil
-}
-
-func MinerSetHas(vmctx types.VMContext, rcid cid.Cid, maddr address.Address) (bool, aerrors.ActorError) {
-	nd, err := hamt.LoadNode(vmctx.Context(), vmctx.Ipld(), rcid)
-	if err != nil {
-		return false, aerrors.HandleExternalError(err, "failed to load miner set")
-	}
-
-	err = nd.Find(vmctx.Context(), string(maddr.Bytes()), nil)
-	switch err {
-	case hamt.ErrNotFound:
-		return false, nil
-	case nil:
-		return true, nil
-	default:
-		return false, aerrors.HandleExternalError(err, "failed to do set lookup")
-	}
-}
-
-func MinerSetList(ctx context.Context, cst *hamt.CborIpldStore, rcid cid.Cid) ([]address.Address, error) {
-	nd, err := hamt.LoadNode(ctx, cst, rcid)
-	if err != nil {
-		return nil, xerrors.Errorf("failed to load miner set: %w", err)
-	}
-
-	var out []address.Address
-	err = nd.ForEach(ctx, func(k string, val interface{}) error {
-		addr, err := address.NewFromBytes([]byte(k))
-		if err != nil {
-			return err
-		}
-		out = append(out, addr)
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return out, nil
-}
-
-func MinerSetAdd(ctx context.Context, vmctx types.VMContext, rcid cid.Cid, maddr address.Address) (cid.Cid, aerrors.ActorError) {
-	nd, err := hamt.LoadNode(ctx, vmctx.Ipld(), rcid)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to load miner set")
-	}
-
-	mkey := string(maddr.Bytes())
-	err = nd.Find(ctx, mkey, nil)
-	if err == nil {
-		return cid.Undef, aerrors.New(20, "miner already in set")
-	}
-
-	if !xerrors.Is(err, hamt.ErrNotFound) {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to do miner set check")
-	}
-
-	if err := nd.Set(ctx, mkey, uint64(1)); err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "adding miner address to set failed")
-	}
-
-	if err := nd.Flush(ctx); err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to flush miner set")
-	}
-
-	c, err := vmctx.Ipld().Put(ctx, nd)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to persist miner set to storage")
-	}
-
-	return c, nil
-}
-
-func MinerSetRemove(ctx context.Context, vmctx types.VMContext, rcid cid.Cid, maddrs ...address.Address) (cid.Cid, aerrors.ActorError) {
-	nd, err := hamt.LoadNode(ctx, vmctx.Ipld(), rcid)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to load miner set")
-	}
-
-	for _, maddr := range maddrs {
-		mkey := string(maddr.Bytes())
-		switch nd.Delete(ctx, mkey) {
-		default:
-			return cid.Undef, aerrors.HandleExternalError(err, "failed to delete miner from set")
-		case hamt.ErrNotFound:
-			return cid.Undef, aerrors.New(1, "miner not found in set on delete")
-		case nil:
-		}
-	}
-
-	if err := nd.Flush(ctx); err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to flush miner set")
-	}
-
-	c, err := vmctx.Ipld().Put(ctx, nd)
-	if err != nil {
-		return cid.Undef, aerrors.HandleExternalError(err, "failed to persist miner set to storage")
-	}
-
-	return c, nil
-}
-
-type cbgNull struct{}
-
-var CborNull = &cbgNull{}
-
-func (cbgNull) MarshalCBOR(w io.Writer) error {
-	n, err := w.Write(cbg.CborNull)
-	if err != nil {
-		return err
-	}
-	if n != 1 {
-		return xerrors.New("expected to write 1 byte")
-	}
-	return nil
-}
-
-func (cbgNull) UnmarshalCBOR(r io.Reader) error {
-	b := [1]byte{}
-	n, err := r.Read(b[:])
-	if err != nil {
-		return err
-	}
-	if n != 1 {
-		return xerrors.New("expected 1 byte")
-	}
-	if !bytes.Equal(b[:], cbg.CborNull) {
-		return xerrors.New("expected cbor null")
-	}
-	return nil
-}
@@ -1,184 +0,0 @@
-package actors_test
-
-import (
-	"context"
-	"fmt"
-	"testing"
-
-	"github.com/filecoin-project/lotus/build"
-	cbg "github.com/whyrusleeping/cbor-gen"
-
-	"github.com/filecoin-project/go-address"
-	. "github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/vm"
-	"github.com/filecoin-project/lotus/chain/wallet"
-	_ "github.com/filecoin-project/lotus/lib/sigs/bls"
-	_ "github.com/filecoin-project/lotus/lib/sigs/secp"
-
-	cid "github.com/ipfs/go-cid"
-	hamt "github.com/ipfs/go-hamt-ipld"
-	bstore "github.com/ipfs/go-ipfs-blockstore"
-	cbor "github.com/ipfs/go-ipld-cbor"
-	mh "github.com/multiformats/go-multihash"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestStorageMarketCreateAndSlashMiner(t *testing.T) {
-	var ownerAddr, workerAddr address.Address
-
-	opts := []HarnessOpt{
-		HarnessAddr(&ownerAddr, 1000000),
-		HarnessAddr(&workerAddr, 100000),
-	}
-
-	h := NewHarness(t, opts...)
-
-	var minerAddr address.Address
-	{
-		// cheating the bootstrapping problem
-		cheatStorageMarketTotal(t, h.vm, h.cs.Blockstore())
-
-		ret, _ := h.InvokeWithValue(t, ownerAddr, StoragePowerAddress, SPAMethods.CreateStorageMiner,
-			types.NewInt(500000),
-			&CreateStorageMinerParams{
-				Owner:      ownerAddr,
-				Worker:     workerAddr,
-				SectorSize: build.SectorSizes[0],
-				PeerID:     "fakepeerid",
-			})
-		ApplyOK(t, ret)
-		var err error
-		minerAddr, err = address.NewFromBytes(ret.Return)
-		assert.NoError(t, err)
-	}
-
-	{
-		ret, _ := h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.IsValidMiner,
-			&IsValidMinerParam{Addr: minerAddr})
-		ApplyOK(t, ret)
-
-		var output bool
-		err := cbor.DecodeInto(ret.Return, &output)
-		if err != nil {
-			t.Fatalf("error decoding: %+v", err)
-		}
-
-		if !output {
-			t.Fatalf("%s is miner but IsValidMiner call returned false", minerAddr)
-		}
-	}
-
-	{
-		ret, _ := h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.PowerLookup,
-			&PowerLookupParams{Miner: minerAddr})
-		ApplyOK(t, ret)
-		power := types.BigFromBytes(ret.Return)
-
-		if types.BigCmp(power, types.NewInt(0)) != 0 {
-			t.Fatalf("power should be zero, is: %s", power)
-		}
-	}
-
-	{
-		ret, _ := h.Invoke(t, ownerAddr, minerAddr, MAMethods.GetOwner, nil)
-		ApplyOK(t, ret)
-		oA, err := address.NewFromBytes(ret.Return)
-		assert.NoError(t, err)
-		assert.Equal(t, ownerAddr, oA, "return from GetOwner should be equal to the owner")
-	}
-
-	{
-		b1 := fakeBlock(t, minerAddr, 100)
-		b2 := fakeBlock(t, minerAddr, 101)
-
-		signBlock(t, h.w, workerAddr, b1)
-		signBlock(t, h.w, workerAddr, b2)
-
-		h.BlockHeight = build.ForkBlizzardHeight + 1
-		ret, _ := h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.ArbitrateConsensusFault,
-			&ArbitrateConsensusFaultParams{
-				Block1: b1,
-				Block2: b1,
-			})
-		assert.Equal(t, uint8(3), ret.ExitCode, "should have failed with exit 3")
-
-		ret, _ = h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.ArbitrateConsensusFault,
-			&ArbitrateConsensusFaultParams{
-				Block1: b1,
-				Block2: b2,
-			})
-		ApplyOK(t, ret)
-	}
-
-	{
-		ret, _ := h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.PowerLookup,
-			&PowerLookupParams{Miner: minerAddr})
-		assert.Equal(t, ret.ExitCode, byte(1))
-	}
-
-	{
-		ret, _ := h.Invoke(t, ownerAddr, StoragePowerAddress, SPAMethods.IsValidMiner, &IsValidMinerParam{minerAddr})
-		ApplyOK(t, ret)
-		assert.Equal(t, ret.Return, cbg.CborBoolFalse)
-	}
-}
-
-func cheatStorageMarketTotal(t *testing.T, vm *vm.VM, bs bstore.Blockstore) {
-	t.Helper()
-
-	sma, err := vm.StateTree().GetActor(StoragePowerAddress)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	cst := hamt.CSTFromBstore(bs)
-
-	var smastate StoragePowerState
-	if err := cst.Get(context.TODO(), sma.Head, &smastate); err != nil {
-		t.Fatal(err)
-	}
-
-	smastate.TotalStorage = types.NewInt(10000)
-
-	c, err := cst.Put(context.TODO(), &smastate)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	sma.Head = c
-
-	if err := vm.StateTree().SetActor(StoragePowerAddress, sma); err != nil {
-		t.Fatal(err)
-	}
-}
-
-func fakeBlock(t *testing.T, minerAddr address.Address, ts uint64) *types.BlockHeader {
-	c := fakeCid(t, 1)
-	return &types.BlockHeader{Height: 8000, Miner: minerAddr, Timestamp: ts, ParentStateRoot: c, Messages: c, ParentMessageReceipts: c, BLSAggregate: types.Signature{Type: types.KTBLS}}
-}
-
-func fakeCid(t *testing.T, s int) cid.Cid {
-	t.Helper()
-	c, err := cid.NewPrefixV1(cid.Raw, mh.IDENTITY).Sum([]byte(fmt.Sprintf("%d", s)))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	return c
-}
-
-func signBlock(t *testing.T, w *wallet.Wallet, worker address.Address, blk *types.BlockHeader) {
-	t.Helper()
-	sb, err := blk.SigningBytes()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	sig, err := w.Sign(context.TODO(), worker, sb)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	blk.BlockSig = sig
-}
@@ -1,65 +0,0 @@
-package actors
-
-import (
-	"github.com/filecoin-project/go-address"
-
-	"github.com/ipfs/go-cid"
-	mh "github.com/multiformats/go-multihash"
-)
-
-var AccountCodeCid cid.Cid
-var CronCodeCid cid.Cid
-var StoragePowerCodeCid cid.Cid
-var StorageMarketCodeCid cid.Cid
-var StorageMinerCodeCid cid.Cid
-var StorageMiner2CodeCid cid.Cid
-var MultisigCodeCid cid.Cid
-var InitCodeCid cid.Cid
-var PaymentChannelCodeCid cid.Cid
-
-var InitAddress = mustIDAddress(0)
-var NetworkAddress = mustIDAddress(1)
-var StoragePowerAddress = mustIDAddress(2)
-var StorageMarketAddress = mustIDAddress(3) // TODO: missing from spec
-var CronAddress = mustIDAddress(4)
-var BurntFundsAddress = mustIDAddress(99)
-
-func mustIDAddress(i uint64) address.Address {
-	a, err := address.NewIDAddress(i)
-	if err != nil {
-		panic(err) // ok
-	}
-	return a
-}
-
-func init() {
-	pref := cid.NewPrefixV1(cid.Raw, mh.IDENTITY)
-	mustSum := func(s string) cid.Cid {
-		c, err := pref.Sum([]byte(s))
-		if err != nil {
-			panic(err) // ok
-		}
-		return c
-	}
-
-	AccountCodeCid = mustSum("fil/1/account") // TODO: spec
-	CronCodeCid = mustSum("fil/1/cron")
-	StoragePowerCodeCid = mustSum("fil/1/power")
-	StorageMarketCodeCid = mustSum("fil/1/market")
-	StorageMinerCodeCid = mustSum("fil/1/miner")
-	StorageMiner2CodeCid = mustSum("fil/1/miner/2")
-	MultisigCodeCid = mustSum("fil/1/multisig")
-	InitCodeCid = mustSum("fil/1/init")
-	PaymentChannelCodeCid = mustSum("fil/1/paych")
-
-	BuiltInActors = map[cid.Cid]bool{
-		StorageMarketCodeCid:  true,
-		StoragePowerCodeCid:   true,
-		StorageMinerCodeCid:   true,
-		StorageMiner2CodeCid:  true,
-		AccountCodeCid:        true,
-		InitCodeCid:           true,
-		MultisigCodeCid:       true,
-		PaymentChannelCodeCid: true,
-	}
-}
@@ -1,158 +0,0 @@
-package actors_test
-
-import (
-	"context"
-	"encoding/binary"
-	"fmt"
-	"testing"
-
-	"github.com/filecoin-project/lotus/build"
-
-	"github.com/filecoin-project/go-address"
-	. "github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/gen"
-	"github.com/filecoin-project/lotus/chain/store"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/vm"
-	dstore "github.com/ipfs/go-datastore"
-	bstore "github.com/ipfs/go-ipfs-blockstore"
-)
-
-func blsaddr(n uint64) address.Address {
-	buf := make([]byte, 48)
-	binary.PutUvarint(buf, n)
-
-	addr, err := address.NewBLSAddress(buf)
-	if err != nil {
-		panic(err) // ok
-	}
-
-	return addr
-}
-
-func setupVMTestEnv(t *testing.T) (*vm.VM, []address.Address, bstore.Blockstore) {
-	bs := bstore.NewBlockstore(dstore.NewMapDatastore())
-
-	from := blsaddr(0)
-	maddr := blsaddr(1)
-
-	actors := map[address.Address]types.BigInt{
-		from:  types.NewInt(1000000),
-		maddr: types.NewInt(0),
-	}
-	st, err := gen.MakeInitialStateTree(bs, actors)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	stateroot, err := st.Flush(context.TODO())
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	cs := store.NewChainStore(bs, nil, nil)
-
-	// TODO: should probabaly mock out the randomness bit, nil works for now
-	vm, err := vm.NewVM(stateroot, 1, nil, maddr, cs.Blockstore(), cs.VMSys())
-	if err != nil {
-		t.Fatal(err)
-	}
-	return vm, []address.Address{from, maddr}, bs
-}
-
-func TestVMInvokeMethod(t *testing.T) {
-	vm, addrs, _ := setupVMTestEnv(t)
-	from := addrs[0]
-
-	var err error
-	cenc, err := SerializeParams(&StorageMinerConstructorParams{Owner: from, Worker: from})
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	execparams := &ExecParams{
-		Code:   StorageMinerCodeCid,
-		Params: cenc,
-	}
-	enc, err := SerializeParams(execparams)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	msg := &types.Message{
-		To:       InitAddress,
-		From:     from,
-		Method:   IAMethods.Exec,
-		Params:   enc,
-		GasPrice: types.NewInt(1),
-		GasLimit: types.NewInt(10000),
-		Value:    types.NewInt(0),
-	}
-
-	ret, err := vm.ApplyMessage(context.TODO(), msg)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if ret.ExitCode != 0 {
-		t.Fatal("invocation failed")
-	}
-
-	outaddr, err := address.NewFromBytes(ret.Return)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if outaddr.String() != "t0102" {
-		t.Fatal("hold up")
-	}
-}
-
-func TestStorageMarketActorCreateMiner(t *testing.T) {
-	vm, addrs, bs := setupVMTestEnv(t)
-	from := addrs[0]
-	maddr := addrs[1]
-
-	cheatStorageMarketTotal(t, vm, bs)
-
-	params := &StorageMinerConstructorParams{
-		Owner:      maddr,
-		Worker:     maddr,
-		SectorSize: build.SectorSizes[0],
-		PeerID:     "fakepeerid",
-	}
-	var err error
-	enc, err := SerializeParams(params)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	msg := &types.Message{
-		To:       StoragePowerAddress,
-		From:     from,
-		Method:   SPAMethods.CreateStorageMiner,
-		Params:   enc,
-		GasPrice: types.NewInt(1),
-		GasLimit: types.NewInt(10000),
-		Value:    types.NewInt(50000),
-	}
-
-	ret, err := vm.ApplyMessage(context.TODO(), msg)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if ret.ExitCode != 0 {
-		fmt.Println(ret.ActorErr)
-		t.Fatal("invocation failed: ", ret.ExitCode)
-	}
-
-	outaddr, err := address.NewFromBytes(ret.Return)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if outaddr.String() != "t0102" {
-		t.Fatal("hold up")
-	}
-}
@@ -1,14 +0,0 @@
-package actors
-
-import (
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-)
-
-func NewIDAddress(id uint64) (address.Address, ActorError) {
-	a, err := address.NewIDAddress(id)
-	if err != nil {
-		return address.Undef, aerrors.Escalate(err, "could not create ID Address")
-	}
-	return a, nil
-}
@@ -3,13 +3,14 @@ package aerrors
 import (
 	"fmt"

+	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
 	"golang.org/x/xerrors"
 )

 func IsFatal(err ActorError) bool {
 	return err != nil && err.IsFatal()
 }
-func RetCode(err ActorError) uint8 {
+func RetCode(err ActorError) exitcode.ExitCode {
 	if err == nil {
 		return 0
 	}
@@ -25,12 +26,12 @@ type internalActorError interface {
 type ActorError interface {
 	error
 	IsFatal() bool
-	RetCode() uint8
+	RetCode() exitcode.ExitCode
 }

 type actorError struct {
 	fatal   bool
-	retCode uint8
+	retCode exitcode.ExitCode

 	msg   string
 	frame xerrors.Frame
@@ -41,7 +42,7 @@ func (e *actorError) IsFatal() bool {
 	return e.fatal
 }

-func (e *actorError) RetCode() uint8 {
+func (e *actorError) RetCode() exitcode.ExitCode {
 	return e.retCode
 }

@@ -4,6 +4,7 @@ import (
 	"testing"

 	. "github.com/filecoin-project/lotus/chain/actors/aerrors"
+	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"

 	"github.com/stretchr/testify/assert"
 	"golang.org/x/xerrors"
@@ -31,5 +32,5 @@ func TestAbsorbeError(t *testing.T) {
 	aw3 := Wrap(aw2, "creating miner in storage market")
 	t.Logf("Verbose error: %+v", aw3)
 	t.Logf("Normal error: %v", aw3)
-	assert.Equal(t, uint8(35), RetCode(aw3))
+	assert.Equal(t, exitcode.ExitCode(35), RetCode(aw3))
 }
@@ -4,12 +4,13 @@ import (
 	"errors"
 	"fmt"

-	hamt "github.com/ipfs/go-hamt-ipld"
+	"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
+	cbor "github.com/ipfs/go-ipld-cbor"
 	"golang.org/x/xerrors"
 )

 // New creates a new non-fatal error
-func New(retCode uint8, message string) ActorError {
+func New(retCode exitcode.ExitCode, message string) ActorError {
 	if retCode == 0 {
 		return &actorError{
 			fatal:   true,
@@ -29,7 +30,7 @@ func New(retCode uint8, message string) ActorError {
 }

 // Newf creates a new non-fatal error
-func Newf(retCode uint8, format string, args ...interface{}) ActorError {
+func Newf(retCode exitcode.ExitCode, format string, args ...interface{}) ActorError {
 	if retCode == 0 {
 		return &actorError{
 			fatal:   true,
@@ -48,6 +49,27 @@ func Newf(retCode uint8, format string, args ...interface{}) ActorError {
 	}
 }

+// todo: bit hacky
+
+func NewfSkip(skip int, retCode exitcode.ExitCode, format string, args ...interface{}) ActorError {
+	if retCode == 0 {
+		return &actorError{
+			fatal:   true,
+			retCode: 0,
+
+			msg:   "tried creating an error and setting RetCode to 0",
+			frame: xerrors.Caller(skip),
+			err:   fmt.Errorf(format, args...),
+		}
+	}
+	return &actorError{
+		retCode: retCode,
+
+		msg:   fmt.Sprintf(format, args...),
+		frame: xerrors.Caller(skip),
+	}
+}
+
 func Fatal(message string, args ...interface{}) ActorError {
 	return &actorError{
 		fatal: true,
@@ -95,7 +117,7 @@ func Wrapf(err ActorError, format string, args ...interface{}) ActorError {
 }

 // Absorb takes and error and makes in not fatal ActorError
-func Absorb(err error, retCode uint8, msg string) ActorError {
+func Absorb(err error, retCode exitcode.ExitCode, msg string) ActorError {
 	if err == nil {
 		return nil
 	}
@@ -160,7 +182,7 @@ func HandleExternalError(err error, msg string) ActorError {
 		}
 	}

-	if xerrors.Is(err, &hamt.SerializationError{}) {
+	if xerrors.Is(err, &cbor.SerializationError{}) {
 		return &actorError{
 			fatal:   false,
 			retCode: 253,
@@ -1,5 +0,0 @@
-package actors
-
-import "github.com/filecoin-project/lotus/chain/actors/aerrors"
-
-type ActorError = aerrors.ActorError
@@ -1,46 +0,0 @@
-package actors
-
-import (
-	"reflect"
-	"sort"
-
-	"github.com/filecoin-project/lotus/chain/actors/aerrors"
-	"github.com/filecoin-project/lotus/chain/types"
-)
-
-type update struct {
-	start  uint64
-	method interface{}
-}
-
-func withUpdates(updates ...update) interface{} {
-	sort.Slice(updates, func(i, j int) bool { // so we iterate from newest below
-		return updates[i].start > updates[j].start
-	})
-
-	// <script type="application/javascript">
-
-	typ := reflect.TypeOf(updates[0].method)
-
-	out := reflect.MakeFunc(typ, func(args []reflect.Value) (results []reflect.Value) {
-		vmctx := args[1].Interface().(types.VMContext)
-
-		for _, u := range updates {
-			if vmctx.BlockHeight() > u.start {
-				return reflect.ValueOf(u.method).Call(args)
-			}
-		}
-
-		return reflect.ValueOf(notFound(vmctx)).Call([]reflect.Value{})
-	})
-
-	return out.Interface()
-
-	// </script>
-}
-
-func notFound(vmctx types.VMContext) func() ([]byte, ActorError) {
-	return func() ([]byte, ActorError) {
-		return nil, aerrors.Fatal("no code for method %d at height %d", vmctx.Message().Method, vmctx.BlockHeight())
-	}
-}
@@ -1,365 +0,0 @@
-package actors_test
-
-import (
-	"bytes"
-	"context"
-	"math/rand"
-	"testing"
-
-	"github.com/filecoin-project/go-sectorbuilder"
-
-	"github.com/ipfs/go-cid"
-	dstore "github.com/ipfs/go-datastore"
-	hamt "github.com/ipfs/go-hamt-ipld"
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	bstore "github.com/ipfs/go-ipfs-blockstore"
-	cbg "github.com/whyrusleeping/cbor-gen"
-	"golang.org/x/xerrors"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/lotus/chain/actors"
-	"github.com/filecoin-project/lotus/chain/gen"
-	"github.com/filecoin-project/lotus/chain/state"
-	"github.com/filecoin-project/lotus/chain/store"
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/vm"
-	"github.com/filecoin-project/lotus/chain/wallet"
-)
-
-const testGasLimit = 10000
-
-type HarnessInit struct {
-	NAddrs uint64
-	Addrs  map[address.Address]types.BigInt
-	Miner  address.Address
-}
-
-type HarnessStage int
-
-const (
-	HarnessPreInit HarnessStage = iota
-	HarnessPostInit
-)
-
-type HarnessOpt func(testing.TB, *Harness) error
-
-type Harness struct {
-	HI          HarnessInit
-	Stage       HarnessStage
-	Nonces      map[address.Address]uint64
-	GasCharges  map[address.Address]types.BigInt
-	Rand        vm.Rand
-	BlockHeight uint64
-
-	lastBalanceCheck map[address.Address]types.BigInt
-
-	ctx context.Context
-	bs  blockstore.Blockstore
-	vm  *vm.VM
-	cs  *store.ChainStore
-	w   *wallet.Wallet
-}
-
-var HarnessMinerFunds = types.NewInt(1000000)
-
-func HarnessAddr(addr *address.Address, value uint64) HarnessOpt {
-	return func(t testing.TB, h *Harness) error {
-		if h.Stage != HarnessPreInit {
-			return nil
-		}
-		hi := &h.HI
-		if addr.Empty() {
-			k, err := h.w.GenerateKey(types.KTSecp256k1)
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			*addr = k
-		}
-		hi.Addrs[*addr] = types.NewInt(value)
-		return nil
-	}
-}
-
-func HarnessMiner(addr *address.Address) HarnessOpt {
-	return func(_ testing.TB, h *Harness) error {
-		if h.Stage != HarnessPreInit {
-			return nil
-		}
-		hi := &h.HI
-		if addr.Empty() {
-			*addr = hi.Miner
-			return nil
-		}
-		delete(hi.Addrs, hi.Miner)
-		hi.Miner = *addr
-		return nil
-	}
-}
-
-func HarnessActor(actor *address.Address, creator *address.Address, code cid.Cid, params func() cbg.CBORMarshaler) HarnessOpt {
-	return func(t testing.TB, h *Harness) error {
-		if h.Stage != HarnessPostInit {
-			return nil
-		}
-		if !actor.Empty() {
-			return xerrors.New("actor address should be empty")
-		}
-
-		ret, _ := h.CreateActor(t, *creator, code, params())
-		if ret.ExitCode != 0 {
-			return xerrors.Errorf("creating actor: %w", ret.ActorErr)
-		}
-		var err error
-		*actor, err = address.NewFromBytes(ret.Return)
-		return err
-	}
-
-}
-
-func HarnessAddMiner(addr *address.Address, creator *address.Address) HarnessOpt {
-	return func(t testing.TB, h *Harness) error {
-		if h.Stage != HarnessPostInit {
-			return nil
-		}
-		if !addr.Empty() {
-			return xerrors.New("actor address should be empty")
-		}
-		ret, _ := h.InvokeWithValue(t, *creator, actors.StoragePowerAddress,
-			actors.SPAMethods.CreateStorageMiner, types.NewInt(3000), &actors.StorageMinerConstructorParams{
-				Owner:      *creator,
-				Worker:     *creator,
-				SectorSize: 1024,
-				PeerID:     "fakepeerid",
-			})
-
-		if ret.ExitCode != 0 {
-			return xerrors.Errorf("creating actor: %w", ret.ActorErr)
-		}
-		var err error
-		*addr, err = address.NewFromBytes(ret.Return)
-		return err
-
-	}
-}
-
-func HarnessCtx(ctx context.Context) HarnessOpt {
-	return func(t testing.TB, h *Harness) error {
-		h.ctx = ctx
-		return nil
-	}
-}
-
-func NewHarness(t *testing.T, options ...HarnessOpt) *Harness {
-	w, err := wallet.NewWallet(wallet.NewMemKeyStore())
-	if err != nil {
-		t.Fatal(err)
-	}
-	h := &Harness{
-		Stage:  HarnessPreInit,
-		Nonces: make(map[address.Address]uint64),
-		Rand:   &fakeRand{},
-		HI: HarnessInit{
-			NAddrs: 1,
-			Miner:  blsaddr(0),
-			Addrs: map[address.Address]types.BigInt{
-				blsaddr(0): HarnessMinerFunds,
-			},
-		},
-		GasCharges: make(map[address.Address]types.BigInt),
-
-		lastBalanceCheck: make(map[address.Address]types.BigInt),
-		w:                w,
-		ctx:              context.Background(),
-		bs:               bstore.NewBlockstore(dstore.NewMapDatastore()),
-		BlockHeight:      0,
-	}
-	for _, opt := range options {
-		err := opt(t, h)
-		if err != nil {
-			t.Fatalf("Applying options: %v", err)
-		}
-	}
-
-	st, err := gen.MakeInitialStateTree(h.bs, h.HI.Addrs)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	stateroot, err := st.Flush(context.TODO())
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	stateroot, err = gen.SetupStorageMarketActor(h.bs, stateroot, nil)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	h.cs = store.NewChainStore(h.bs, nil, vm.Syscalls(sectorbuilder.ProofVerifier))
-	h.vm, err = vm.NewVM(stateroot, 1, h.Rand, h.HI.Miner, h.cs.Blockstore(), h.cs.VMSys())
-	if err != nil {
-		t.Fatal(err)
-	}
-	h.Stage = HarnessPostInit
-	for _, opt := range options {
-		err := opt(t, h)
-		if err != nil {
-			t.Fatalf("Applying options: %+v", err)
-		}
-	}
-
-	return h
-}
-
-func (h *Harness) Apply(t testing.TB, msg types.Message) (*vm.ApplyRet, *state.StateTree) {
-	t.Helper()
-	if msg.Nonce == 0 {
-		msg.Nonce, _ = h.Nonces[msg.From]
-		h.Nonces[msg.From] = msg.Nonce + 1
-	}
-
-	ret, err := h.vm.ApplyMessage(h.ctx, &msg)
-	if err != nil {
-		t.Fatalf("Applying message: %+v", err)
-	}
-
-	if ret != nil {
-		if prev, ok := h.GasCharges[msg.From]; ok {
-			h.GasCharges[msg.From] = types.BigAdd(prev, ret.GasUsed)
-		} else {
-			h.GasCharges[msg.From] = ret.GasUsed
-		}
-	}
-
-	stateroot, err := h.vm.Flush(context.TODO())
-	if err != nil {
-		t.Fatalf("Flushing VM: %+v", err)
-	}
-	cst := hamt.CSTFromBstore(h.bs)
-	state, err := state.LoadStateTree(cst, stateroot)
-	if err != nil {
-		t.Fatalf("Loading state tree: %+v", err)
-	}
-	return ret, state
-}
-
-func (h *Harness) CreateActor(t testing.TB, from address.Address,
-	code cid.Cid, params cbg.CBORMarshaler) (*vm.ApplyRet, *state.StateTree) {
-	t.Helper()
-
-	return h.Apply(t, types.Message{
-		To:     actors.InitAddress,
-		From:   from,
-		Method: actors.IAMethods.Exec,
-		Params: DumpObject(t,
-			&actors.ExecParams{
-				Code:   code,
-				Params: DumpObject(t, params),
-			}),
-		GasPrice: types.NewInt(1),
-		GasLimit: types.NewInt(testGasLimit),
-		Value:    types.NewInt(0),
-	})
-}
-
-func (h *Harness) SendFunds(t testing.TB, from address.Address, to address.Address,
-	value types.BigInt) (*vm.ApplyRet, *state.StateTree) {
-	t.Helper()
-	return h.Apply(t, types.Message{
-		To:       to,
-		From:     from,
-		Method:   0,
-		Value:    value,
-		GasPrice: types.NewInt(1),
-		GasLimit: types.NewInt(testGasLimit),
-	})
-}
-
-func (h *Harness) Invoke(t testing.TB, from address.Address, to address.Address,
-	method uint64, params cbg.CBORMarshaler) (*vm.ApplyRet, *state.StateTree) {
-	t.Helper()
-	return h.InvokeWithValue(t, from, to, method, types.NewInt(0), params)
-}
-
-func (h *Harness) InvokeWithValue(t testing.TB, from address.Address, to address.Address,
-	method uint64, value types.BigInt, params cbg.CBORMarshaler) (*vm.ApplyRet, *state.StateTree) {
-	t.Helper()
-	h.vm.SetBlockHeight(h.BlockHeight)
-	return h.Apply(t, types.Message{
-		To:       to,
-		From:     from,
-		Method:   method,
-		Value:    value,
-		Params:   DumpObject(t, params),
-		GasPrice: types.NewInt(1),
-		GasLimit: types.NewInt(testGasLimit),
-	})
-}
-
-func (h *Harness) AssertBalance(t testing.TB, addr address.Address, amt uint64) {
-	t.Helper()
-
-	b, err := h.vm.ActorBalance(addr)
-	if err != nil {
-		t.Fatalf("%+v", err)
-	}
-
-	if types.BigCmp(types.NewInt(amt), b) != 0 {
-		t.Errorf("expected %s to have balanced of %d. Instead has %s", addr, amt, b)
-	}
-}
-
-func (h *Harness) AssertBalanceChange(t testing.TB, addr address.Address, amt int64) {
-	t.Helper()
-	lastBalance, ok := h.lastBalanceCheck[addr]
-	if !ok {
-		lastBalance, ok = h.HI.Addrs[addr]
-		if !ok {
-			lastBalance = types.NewInt(0)
-		}
-	}
-
-	var expected types.BigInt
-
-	if amt >= 0 {
-		expected = types.BigAdd(lastBalance, types.NewInt(uint64(amt)))
-	} else {
-		expected = types.BigSub(lastBalance, types.NewInt(uint64(-amt)))
-	}
-
-	h.lastBalanceCheck[addr] = expected
-
-	if gasUsed, ok := h.GasCharges[addr]; ok {
-		expected = types.BigSub(expected, gasUsed)
-	}
-
-	b, err := h.vm.ActorBalance(addr)
-	if err != nil {
-		t.Fatalf("%+v", err)
-	}
-
-	if types.BigCmp(expected, b) != 0 {
-		t.Errorf("expected %s to have balanced of %d. Instead has %s", addr, amt, b)
-	}
-}
-
-func DumpObject(t testing.TB, obj cbg.CBORMarshaler) []byte {
-	if obj == nil {
-		return nil
-	}
-	t.Helper()
-	b := new(bytes.Buffer)
-	if err := obj.MarshalCBOR(b); err != nil {
-		t.Fatalf("dumping params: %+v", err)
-	}
-	return b.Bytes()
-}
-
-type fakeRand struct{}
-
-func (fr *fakeRand) GetRandomness(ctx context.Context, h int64) ([]byte, error) {
-	out := make([]byte, 32)
-	rand.New(rand.NewSource(h)).Read(out)
-	return out, nil
-}
@@ -7,10 +7,6 @@ import (
 	cbg "github.com/whyrusleeping/cbor-gen"
 )

-var (
-	EmptyStructCBOR = []byte{0xa0}
-)
-
 func SerializeParams(i cbg.CBORMarshaler) ([]byte, aerrors.ActorError) {
 	buf := new(bytes.Buffer)
 	if err := i.MarshalCBOR(buf); err != nil {
@@ -1,6 +1,8 @@
 package chain

 import (
+	"fmt"
+
 	"github.com/filecoin-project/lotus/build"
 	lru "github.com/hashicorp/golang-lru"
 	"github.com/ipfs/go-cid"
@@ -10,6 +12,35 @@ type BadBlockCache struct {
 	badBlocks *lru.ARCCache
 }

+type BadBlockReason struct {
+	Reason         string
+	TipSet         []cid.Cid
+	OriginalReason *BadBlockReason
+}
+
+func NewBadBlockReason(cid []cid.Cid, format string, i ...interface{}) BadBlockReason {
+	return BadBlockReason{
+		TipSet: cid,
+		Reason: fmt.Sprintf(format, i...),
+	}
+}
+
+func (bbr BadBlockReason) Linked(reason string, i ...interface{}) BadBlockReason {
+	or := &bbr
+	if bbr.OriginalReason != nil {
+		or = bbr.OriginalReason
+	}
+	return BadBlockReason{Reason: fmt.Sprintf(reason, i...), OriginalReason: or}
+}
+
+func (bbr BadBlockReason) String() string {
+	res := bbr.Reason
+	if bbr.OriginalReason != nil {
+		res += " caused by: " + fmt.Sprintf("%s %s", bbr.OriginalReason.TipSet, bbr.OriginalReason.String())
+	}
+	return res
+}
+
 func NewBadBlockCache() *BadBlockCache {
 	cache, err := lru.NewARC(build.BadBlockCacheSize)
 	if err != nil {
@@ -21,15 +52,15 @@ func NewBadBlockCache() *BadBlockCache {
 	}
 }

-func (bts *BadBlockCache) Add(c cid.Cid, reason string) {
-	bts.badBlocks.Add(c, reason)
+func (bts *BadBlockCache) Add(c cid.Cid, bbr BadBlockReason) {
+	bts.badBlocks.Add(c, bbr)
 }

-func (bts *BadBlockCache) Has(c cid.Cid) (string, bool) {
+func (bts *BadBlockCache) Has(c cid.Cid) (BadBlockReason, bool) {
 	rval, ok := bts.badBlocks.Get(c)
 	if !ok {
-		return "", false
+		return BadBlockReason{}, false
 	}

-	return rval.(string), true
+	return rval.(BadBlockReason), true
 }
@@ -0,0 +1,93 @@
+package beacon
+
+import (
+	"context"
+	"time"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	logging "github.com/ipfs/go-log"
+	"golang.org/x/xerrors"
+)
+
+var log = logging.Logger("beacon")
+
+type Response struct {
+	Entry types.BeaconEntry
+	Err   error
+}
+
+// RandomBeacon represents a system that provides randomness to Lotus.
+// Other components interrogate the RandomBeacon to acquire randomness that's
+// valid for a specific chain epoch. Also to verify beacon entries that have
+// been posted on chain.
+type RandomBeacon interface {
+	Entry(context.Context, uint64) <-chan Response
+	VerifyEntry(types.BeaconEntry, types.BeaconEntry) error
+	MaxBeaconRoundForEpoch(abi.ChainEpoch, types.BeaconEntry) uint64
+}
+
+func ValidateBlockValues(b RandomBeacon, h *types.BlockHeader, prevEntry types.BeaconEntry) error {
+	maxRound := b.MaxBeaconRoundForEpoch(h.Height, prevEntry)
+	if maxRound == prevEntry.Round {
+		if len(h.BeaconEntries) != 0 {
+			return xerrors.Errorf("expected not to have any beacon entries in this block, got %d", len(h.BeaconEntries))
+		}
+		return nil
+	}
+
+	last := h.BeaconEntries[len(h.BeaconEntries)-1]
+	if last.Round != maxRound {
+		return xerrors.Errorf("expected final beacon entry in block to be at round %d, got %d", maxRound, last.Round)
+	}
+
+	for i, e := range h.BeaconEntries {
+		if err := b.VerifyEntry(e, prevEntry); err != nil {
+			return xerrors.Errorf("beacon entry %d (%d - %x (%d)) was invalid: %w", i, e.Round, e.Data, len(e.Data), err)
+		}
+		prevEntry = e
+	}
+
+	return nil
+}
+
+func BeaconEntriesForBlock(ctx context.Context, beacon RandomBeacon, round abi.ChainEpoch, prev types.BeaconEntry) ([]types.BeaconEntry, error) {
+	start := time.Now()
+
+	maxRound := beacon.MaxBeaconRoundForEpoch(round, prev)
+	if maxRound == prev.Round {
+		return nil, nil
+	}
+
+	// TODO: this is a sketchy way to handle the genesis block not having a beacon entry
+	if prev.Round == 0 {
+		prev.Round = maxRound - 1
+	}
+
+	cur := maxRound
+	var out []types.BeaconEntry
+	for cur > prev.Round {
+		rch := beacon.Entry(ctx, cur)
+		select {
+		case resp := <-rch:
+			if resp.Err != nil {
+				return nil, xerrors.Errorf("beacon entry request returned error: %w", resp.Err)
+			}
+
+			out = append(out, resp.Entry)
+			cur = resp.Entry.Round - 1
+		case <-ctx.Done():
+			return nil, xerrors.Errorf("context timed out waiting on beacon entry to come back for round %d: %w", round, ctx.Err())
+		}
+	}
+
+	log.Debugw("fetching beacon entries", "took", time.Since(start), "numEntries", len(out))
+	reverse(out)
+	return out, nil
+}
+
+func reverse(arr []types.BeaconEntry) {
+	for i := 0; i < len(arr)/2; i++ {
+		arr[i], arr[len(arr)-(1+i)] = arr[len(arr)-(1+i)], arr[i]
+	}
+}
@@ -0,0 +1,192 @@
+package drand
+
+import (
+	"bytes"
+	"context"
+	"sync"
+	"time"
+
+	dchain "github.com/drand/drand/chain"
+	dclient "github.com/drand/drand/client"
+	hclient "github.com/drand/drand/client/http"
+	dlog "github.com/drand/drand/log"
+	gclient "github.com/drand/drand/lp2p/client"
+	"github.com/drand/kyber"
+	kzap "github.com/go-kit/kit/log/zap"
+	"go.uber.org/zap/zapcore"
+	"golang.org/x/xerrors"
+
+	logging "github.com/ipfs/go-log"
+	pubsub "github.com/libp2p/go-libp2p-pubsub"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+
+	"github.com/filecoin-project/lotus/chain/beacon"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/node/modules/dtypes"
+)
+
+var log = logging.Logger("drand")
+
+type drandPeer struct {
+	addr string
+	tls  bool
+}
+
+func (dp *drandPeer) Address() string {
+	return dp.addr
+}
+
+func (dp *drandPeer) IsTLS() bool {
+	return dp.tls
+}
+
+// DrandBeacon connects Lotus with a drand network in order to provide
+// randomness to the system in a way that's aligned with Filecoin rounds/epochs.
+//
+// We connect to drand peers via their public HTTP endpoints. The peers are
+// enumerated in the drandServers variable.
+//
+// The root trust for the Drand chain is configured from build.DrandChain.
+type DrandBeacon struct {
+	client dclient.Client
+
+	pubkey kyber.Point
+
+	// seconds
+	interval time.Duration
+
+	drandGenTime uint64
+	filGenTime   uint64
+	filRoundTime uint64
+
+	cacheLk    sync.Mutex
+	localCache map[uint64]types.BeaconEntry
+}
+
+func NewDrandBeacon(genesisTs, interval uint64, ps *pubsub.PubSub, config dtypes.DrandConfig) (*DrandBeacon, error) {
+	if genesisTs == 0 {
+		panic("what are you doing this cant be zero")
+	}
+
+	drandChain, err := dchain.InfoFromJSON(bytes.NewReader([]byte(config.ChainInfoJSON)))
+	if err != nil {
+		return nil, xerrors.Errorf("unable to unmarshal drand chain info: %w", err)
+	}
+
+	dlogger := dlog.NewKitLoggerFrom(kzap.NewZapSugarLogger(
+		log.SugaredLogger.Desugar(), zapcore.InfoLevel))
+
+	var clients []dclient.Client
+	for _, url := range config.Servers {
+		hc, err := hclient.NewWithInfo(url, drandChain, nil)
+		if err != nil {
+			return nil, xerrors.Errorf("could not create http drand client: %w", err)
+		}
+		clients = append(clients, hc)
+
+	}
+
+	opts := []dclient.Option{
+		dclient.WithChainInfo(drandChain),
+		dclient.WithCacheSize(1024),
+		dclient.WithLogger(dlogger),
+		dclient.WithAutoWatch(),
+	}
+
+	if ps != nil {
+		opts = append(opts, gclient.WithPubsub(ps))
+	} else {
+		log.Info("drand beacon without pubsub")
+	}
+
+	client, err := dclient.Wrap(clients, opts...)
+	if err != nil {
+		return nil, xerrors.Errorf("creating drand client")
+	}
+
+	db := &DrandBeacon{
+		client:     client,
+		localCache: make(map[uint64]types.BeaconEntry),
+	}
+
+	db.pubkey = drandChain.PublicKey
+	db.interval = drandChain.Period
+	db.drandGenTime = uint64(drandChain.GenesisTime)
+	db.filRoundTime = interval
+	db.filGenTime = genesisTs
+
+	return db, nil
+}
+
+func (db *DrandBeacon) Entry(ctx context.Context, round uint64) <-chan beacon.Response {
+	out := make(chan beacon.Response, 1)
+	if round != 0 {
+		be := db.getCachedValue(round)
+		if be != nil {
+			out <- beacon.Response{Entry: *be}
+			close(out)
+			return out
+		}
+	}
+
+	go func() {
+		start := time.Now()
+		log.Infow("start fetching randomness", "round", round)
+		resp, err := db.client.Get(ctx, round)
+
+		var br beacon.Response
+		if err != nil {
+			br.Err = xerrors.Errorf("drand failed Get request: %w", err)
+		} else {
+			br.Entry.Round = resp.Round()
+			br.Entry.Data = resp.Signature()
+		}
+		log.Infow("done fetching randomness", "round", round, "took", time.Since(start))
+		out <- br
+		close(out)
+	}()
+
+	return out
+}
+func (db *DrandBeacon) cacheValue(e types.BeaconEntry) {
+	db.cacheLk.Lock()
+	defer db.cacheLk.Unlock()
+	db.localCache[e.Round] = e
+}
+
+func (db *DrandBeacon) getCachedValue(round uint64) *types.BeaconEntry {
+	db.cacheLk.Lock()
+	defer db.cacheLk.Unlock()
+	v, ok := db.localCache[round]
+	if !ok {
+		return nil
+	}
+	return &v
+}
+
+func (db *DrandBeacon) VerifyEntry(curr types.BeaconEntry, prev types.BeaconEntry) error {
+	if prev.Round == 0 {
+		// TODO handle genesis better
+		return nil
+	}
+	b := &dchain.Beacon{
+		PreviousSig: prev.Data,
+		Round:       curr.Round,
+		Signature:   curr.Data,
+	}
+	err := dchain.VerifyBeacon(db.pubkey, b)
+	if err == nil {
+		db.cacheValue(curr)
+	}
+	return err
+}
+
+func (db *DrandBeacon) MaxBeaconRoundForEpoch(filEpoch abi.ChainEpoch, prevEntry types.BeaconEntry) uint64 {
+	// TODO: sometimes the genesis time for filecoin is zero and this goes negative
+	latestTs := ((uint64(filEpoch) * db.filRoundTime) + db.filGenTime) - db.filRoundTime
+	dround := (latestTs - db.drandGenTime) / uint64(db.interval.Seconds())
+	return dround
+}
+
+var _ beacon.RandomBeacon = (*DrandBeacon)(nil)
@@ -0,0 +1,25 @@
+package drand
+
+import (
+	"os"
+	"testing"
+
+	dchain "github.com/drand/drand/chain"
+	hclient "github.com/drand/drand/client/http"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/filecoin-project/lotus/build"
+)
+
+func TestPrintGroupInfo(t *testing.T) {
+	server := build.DrandConfig.Servers[0]
+	c, err := hclient.New(server, nil, nil)
+	assert.NoError(t, err)
+	cg := c.(interface {
+		FetchChainInfo(groupHash []byte) (*dchain.Info, error)
+	})
+	chain, err := cg.FetchChainInfo(nil)
+	assert.NoError(t, err)
+	err = chain.ToJSON(os.Stdout)
+	assert.NoError(t, err)
+}
@@ -0,0 +1,64 @@
+package beacon
+
+import (
+	"bytes"
+	"context"
+	"encoding/binary"
+	"time"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/minio/blake2b-simd"
+	"golang.org/x/xerrors"
+)
+
+// Mock beacon assumes that filecoin rounds are 1:1 mapped with the beacon rounds
+type mockBeacon struct {
+	interval time.Duration
+}
+
+func NewMockBeacon(interval time.Duration) RandomBeacon {
+	mb := &mockBeacon{interval: interval}
+
+	return mb
+}
+
+func (mb *mockBeacon) RoundTime() time.Duration {
+	return mb.interval
+}
+
+func (mb *mockBeacon) entryForIndex(index uint64) types.BeaconEntry {
+	buf := make([]byte, 8)
+	binary.BigEndian.PutUint64(buf, index)
+	rval := blake2b.Sum256(buf)
+	return types.BeaconEntry{
+		Round: index,
+		Data:  rval[:],
+	}
+}
+
+func (mb *mockBeacon) Entry(ctx context.Context, index uint64) <-chan Response {
+	e := mb.entryForIndex(index)
+	out := make(chan Response, 1)
+	out <- Response{Entry: e}
+	return out
+}
+
+func (mb *mockBeacon) VerifyEntry(from types.BeaconEntry, to types.BeaconEntry) error {
+	// TODO: cache this, especially for bls
+	oe := mb.entryForIndex(from.Round)
+	if !bytes.Equal(from.Data, oe.Data) {
+		return xerrors.Errorf("mock beacon entry was invalid!")
+	}
+	return nil
+}
+
+func (mb *mockBeacon) IsEntryForEpoch(e types.BeaconEntry, epoch abi.ChainEpoch, nulls int) (bool, error) {
+	return int64(e.Round) <= int64(epoch) && int64(epoch)-int64(nulls) >= int64(e.Round), nil
+}
+
+func (mb *mockBeacon) MaxBeaconRoundForEpoch(epoch abi.ChainEpoch, prevEntry types.BeaconEntry) uint64 {
+	return uint64(epoch)
+}
+
+var _ RandomBeacon = (*mockBeacon)(nil)
@@ -10,6 +10,7 @@ import (
 	"golang.org/x/xerrors"

 	cborutil "github.com/filecoin-project/go-cbor-util"
+
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"

@@ -27,6 +28,24 @@ const BlockSyncProtocolID = "/fil/sync/blk/0.0.1"

 const BlockSyncMaxRequestLength = 800

+// BlockSyncService is the component that services BlockSync requests from
+// peers.
+//
+// BlockSync is the basic chain synchronization protocol of Filecoin. BlockSync
+// is an RPC-oriented protocol, with a single operation to request blocks.
+//
+// A request contains a start anchor block (referred to with a CID), and a
+// amount of blocks requested beyond the anchor (including the anchor itself).
+//
+// A client can also pass options, encoded as a 64-bit bitfield. Lotus supports
+// two options at the moment:
+//
+//  - include block contents
+//  - include block messages
+//
+// The response will include a status code, an optional message, and the
+// response payload in case of success. The payload is a slice of serialized
+// tipsets.
 type BlockSyncService struct {
 	cs *store.ChainStore
 }
@@ -91,7 +110,7 @@ func (bss *BlockSyncService) HandleStream(s inet.Stream) {
 	ctx, span := trace.StartSpan(context.Background(), "blocksync.HandleStream")
 	defer span.End()

-	defer s.Close()
+	defer s.Close() //nolint:errcheck

 	var req BlockSyncRequest
 	if err := cborutil.ReadCborRPC(bufio.NewReader(s), &req); err != nil {
@@ -107,7 +126,7 @@ func (bss *BlockSyncService) HandleStream(s inet.Stream) {
 	}

 	writeDeadline := 60 * time.Second
-	s.SetDeadline(time.Now().Add(writeDeadline))
+	_ = s.SetDeadline(time.Now().Add(writeDeadline))
 	if err := cborutil.WriteCborRPC(s, resp); err != nil {
 		log.Warnw("failed to write back response for handle stream", "err", err, "peer", s.Conn().RemotePeer())
 		return
@@ -138,7 +157,7 @@ func (bss *BlockSyncService) processRequest(ctx context.Context, p peer.ID, req
 		reqlen = BlockSyncMaxRequestLength
 	}

-	chain, err := bss.collectChainSegment(types.NewTipSetKey(req.Start...), reqlen, opts)
+	chain, err := collectChainSegment(bss.cs, types.NewTipSetKey(req.Start...), reqlen, opts)
 	if err != nil {
 		log.Warn("encountered error while responding to block sync request: ", err)
 		return &BlockSyncResponse{
@@ -158,18 +177,18 @@ func (bss *BlockSyncService) processRequest(ctx context.Context, p peer.ID, req
 	}, nil
 }

-func (bss *BlockSyncService) collectChainSegment(start types.TipSetKey, length uint64, opts *BSOptions) ([]*BSTipSet, error) {
+func collectChainSegment(cs *store.ChainStore, start types.TipSetKey, length uint64, opts *BSOptions) ([]*BSTipSet, error) {
 	var bstips []*BSTipSet
 	cur := start
 	for {
 		var bst BSTipSet
-		ts, err := bss.cs.LoadTipSet(cur)
+		ts, err := cs.LoadTipSet(cur)
 		if err != nil {
 			return nil, xerrors.Errorf("failed loading tipset %s: %w", cur, err)
 		}

 		if opts.IncludeMessages {
-			bmsgs, bmincl, smsgs, smincl, err := bss.gatherMessages(ts)
+			bmsgs, bmincl, smsgs, smincl, err := gatherMessages(cs, ts)
 			if err != nil {
 				return nil, xerrors.Errorf("gather messages failed: %w", err)
 			}
@@ -194,7 +213,7 @@ func (bss *BlockSyncService) collectChainSegment(start types.TipSetKey, length u
 	}
 }

-func (bss *BlockSyncService) gatherMessages(ts *types.TipSet) ([]*types.Message, [][]uint64, []*types.SignedMessage, [][]uint64, error) {
+func gatherMessages(cs *store.ChainStore, ts *types.TipSet) ([]*types.Message, [][]uint64, []*types.SignedMessage, [][]uint64, error) {
 	blsmsgmap := make(map[cid.Cid]uint64)
 	secpkmsgmap := make(map[cid.Cid]uint64)
 	var secpkmsgs []*types.SignedMessage
@@ -202,7 +221,7 @@ func (bss *BlockSyncService) gatherMessages(ts *types.TipSet) ([]*types.Message,
 	var secpkincl, blsincl [][]uint64

 	for _, b := range ts.Blocks() {
-		bmsgs, smsgs, err := bss.cs.MessagesForBlock(b)
+		bmsgs, smsgs, err := cs.MessagesForBlock(b)
 		if err != nil {
 			return nil, nil, nil, nil, err
 		}
@@ -12,6 +12,8 @@ import (
 	blocks "github.com/ipfs/go-block-format"
 	bserv "github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-cid"
+	graphsync "github.com/ipfs/go-graphsync"
+	gsnet "github.com/ipfs/go-graphsync/network"
 	host "github.com/libp2p/go-libp2p-core/host"
 	inet "github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
@@ -22,24 +24,26 @@ import (
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
 	incrt "github.com/filecoin-project/lotus/lib/increadtimeout"
+	"github.com/filecoin-project/lotus/lib/peermgr"
 	"github.com/filecoin-project/lotus/node/modules/dtypes"
-	"github.com/filecoin-project/lotus/peermgr"
 )

 type BlockSync struct {
 	bserv bserv.BlockService
+	gsync graphsync.GraphExchange
 	host  host.Host

 	syncPeers *bsPeerTracker
 	peerMgr   *peermgr.PeerMgr
 }

-func NewBlockSyncClient(bserv dtypes.ChainBlockService, h host.Host, pmgr peermgr.MaybePeerMgr) *BlockSync {
+func NewBlockSyncClient(bserv dtypes.ChainBlockService, h host.Host, pmgr peermgr.MaybePeerMgr, gs dtypes.Graphsync) *BlockSync {
 	return &BlockSync{
 		bserv:     bserv,
 		host:      h,
 		syncPeers: newPeerTracker(pmgr.Mgr),
 		peerMgr:   pmgr.Mgr,
+		gsync:     gs,
 	}
 }

@@ -60,6 +64,11 @@ func (bs *BlockSync) processStatus(req *BlockSyncRequest, res *BlockSyncResponse
 	}
 }

+// GetBlocks fetches count blocks from the network, from the provided tipset
+// *backwards*, returning as many tipsets as count.
+//
+// {hint/usage}: This is used by the Syncer during normal chain syncing and when
+// resolving forks.
 func (bs *BlockSync) GetBlocks(ctx context.Context, tsk types.TipSetKey, count int) ([]*types.TipSet, error) {
 	ctx, span := trace.StartSpan(ctx, "bsync.GetBlocks")
 	defer span.End()
@@ -76,7 +85,9 @@ func (bs *BlockSync) GetBlocks(ctx context.Context, tsk types.TipSetKey, count i
 		Options:       BSOptBlocks,
 	}

+	// this peerset is sorted by latency and failure counting.
 	peers := bs.getPeers()
+
 	// randomize the first few peers so we don't always pick the same peer
 	shufflePrefix(peers)

@@ -101,7 +112,7 @@ func (bs *BlockSync) GetBlocks(ctx context.Context, tsk types.TipSetKey, count i
 			continue
 		}

-		if res.Status == 0 {
+		if res.Status == StatusOK || res.Status == StatusPartial {
 			resp, err := bs.processBlocksResponse(req, res)
 			if err != nil {
 				return nil, xerrors.Errorf("success response from peer failed to process: %w", err)
@@ -110,6 +121,7 @@ func (bs *BlockSync) GetBlocks(ctx context.Context, tsk types.TipSetKey, count i
 			bs.host.ConnManager().TagPeer(p, "bsync", 25)
 			return resp, nil
 		}
+
 		oerr = bs.processStatus(req, res)
 		if oerr != nil {
 			log.Warnf("BlockSync peer %s response was an error: %s", p.String(), oerr)
@@ -141,7 +153,7 @@ func (bs *BlockSync) GetFullTipSet(ctx context.Context, p peer.ID, tsk types.Tip

 		return bstsToFullTipSet(bts)
 	case 101: // Partial Response
-		return nil, xerrors.Errorf("partial responses are not handled")
+		return nil, xerrors.Errorf("partial responses are not handled for single tipset fetching")
 	case 201: // req.Start not found
 		return nil, fmt.Errorf("not found")
 	case 202: // Go Away
@@ -181,7 +193,7 @@ func (bs *BlockSync) GetChainMessages(ctx context.Context, h *types.TipSet, coun
 	req := &BlockSyncRequest{
 		Start:         h.Cids(),
 		RequestLength: count,
-		Options:       BSOptMessages | BSOptBlocks,
+		Options:       BSOptMessages,
 	}

 	var err error
@@ -201,8 +213,8 @@ func (bs *BlockSync) GetChainMessages(ctx context.Context, h *types.TipSet, coun
 		}

 		if res.Status == StatusPartial {
-			log.Warn("dont yet handle partial responses")
-			continue
+			// TODO: track partial response sizes to ensure we don't overrequest too often
+			return res.Chain, nil
 		}

 		err = bs.processStatus(req, res)
@@ -234,27 +246,58 @@ func (bs *BlockSync) sendRequestToPeer(ctx context.Context, p peer.ID, req *Bloc
 		}
 	}()

-	start := time.Now()
-
 	if span.IsRecordingEvents() {
 		span.AddAttributes(
 			trace.StringAttribute("peer", p.Pretty()),
 		)
 	}

+	gsproto := string(gsnet.ProtocolGraphsync)
+	supp, err := bs.host.Peerstore().SupportsProtocols(p, BlockSyncProtocolID, gsproto)
+	if err != nil {
+		return nil, xerrors.Errorf("failed to get protocols for peer: %w", err)
+	}
+
+	if len(supp) == 0 {
+		return nil, xerrors.Errorf("peer %s supports no known sync protocols", p)
+	}
+
+	switch supp[0] {
+	case BlockSyncProtocolID:
+		res, err := bs.fetchBlocksBlockSync(ctx, p, req)
+		if err != nil {
+			return nil, xerrors.Errorf("blocksync req failed: %w", err)
+		}
+		return res, nil
+	case gsproto:
+		res, err := bs.fetchBlocksGraphSync(ctx, p, req)
+		if err != nil {
+			return nil, xerrors.Errorf("graphsync req failed: %w", err)
+		}
+		return res, nil
+	default:
+		return nil, xerrors.Errorf("peerstore somehow returned unexpected protocols: %v", supp)
+	}
+
+}
+func (bs *BlockSync) fetchBlocksBlockSync(ctx context.Context, p peer.ID, req *BlockSyncRequest) (*BlockSyncResponse, error) {
+	ctx, span := trace.StartSpan(ctx, "blockSyncFetch")
+	defer span.End()
+
+	start := time.Now()
 	s, err := bs.host.NewStream(inet.WithNoDial(ctx, "should already have connection"), p, BlockSyncProtocolID)
 	if err != nil {
 		bs.RemovePeer(p)
 		return nil, xerrors.Errorf("failed to open stream to peer: %w", err)
 	}
-	s.SetWriteDeadline(time.Now().Add(5 * time.Second))
+	_ = s.SetWriteDeadline(time.Now().Add(5 * time.Second))

 	if err := cborutil.WriteCborRPC(s, req); err != nil {
-		s.SetWriteDeadline(time.Time{})
+		_ = s.SetWriteDeadline(time.Time{})
 		bs.syncPeers.logFailure(p, time.Since(start))
 		return nil, err
 	}
-	s.SetWriteDeadline(time.Time{})
+	_ = s.SetWriteDeadline(time.Time{})

 	var res BlockSyncResponse
 	r := incrt.New(s, 50<<10, 5*time.Second)
@@ -272,7 +315,6 @@ func (bs *BlockSync) sendRequestToPeer(ctx context.Context, p peer.ID, req *Bloc
 	}

 	bs.syncPeers.logSuccess(p, time.Since(start))
-
 	return &res, nil
 }

@@ -321,6 +363,7 @@ func (bs *BlockSync) RemovePeer(p peer.ID) {
 	bs.syncPeers.removePeer(p)
 }

+// getPeers returns a preference-sorted set of peers to query.
 func (bs *BlockSync) getPeers() []peer.ID {
 	return bs.syncPeers.prefSortedPeers()
 }
@@ -526,26 +569,30 @@ func (bpt *bsPeerTracker) logSuccess(p peer.ID, dur time.Duration) {
 	bpt.lk.Lock()
 	defer bpt.lk.Unlock()

-	if pi, ok := bpt.peers[p]; !ok {
+	var pi *peerStats
+	var ok bool
+	if pi, ok = bpt.peers[p]; !ok {
 		log.Warnw("log success called on peer not in tracker", "peerid", p.String())
 		return
-	} else {
-		pi.successes++
-
-		logTime(pi, dur)
 	}
+
+	pi.successes++
+	logTime(pi, dur)
 }

 func (bpt *bsPeerTracker) logFailure(p peer.ID, dur time.Duration) {
 	bpt.lk.Lock()
 	defer bpt.lk.Unlock()
-	if pi, ok := bpt.peers[p]; !ok {
+
+	var pi *peerStats
+	var ok bool
+	if pi, ok = bpt.peers[p]; !ok {
 		log.Warn("log failure called on peer not in tracker", "peerid", p.String())
 		return
-	} else {
-		pi.failures++
-		logTime(pi, dur)
 	}
+
+	pi.failures++
+	logTime(pi, dur)
 }

 func (bpt *bsPeerTracker) removePeer(p peer.ID) {
@@ -1,3 +1,5 @@
+// Code generated by github.com/whyrusleeping/cbor-gen. DO NOT EDIT.
+
 package blocksync

 import (
@@ -5,54 +7,60 @@ import (
 	"io"

 	"github.com/filecoin-project/lotus/chain/types"
-	cid "github.com/ipfs/go-cid"
+	"github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	xerrors "golang.org/x/xerrors"
 )

-// Code generated by github.com/whyrusleeping/cbor-gen. DO NOT EDIT.
-
 var _ = xerrors.Errorf

+var lengthBufBlockSyncRequest = []byte{131}
+
 func (t *BlockSyncRequest) MarshalCBOR(w io.Writer) error {
 	if t == nil {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{131}); err != nil {
+	if _, err := w.Write(lengthBufBlockSyncRequest); err != nil {
 		return err
 	}

+	scratch := make([]byte, 9)
+
 	// t.Start ([]cid.Cid) (slice)
 	if len(t.Start) > cbg.MaxLength {
 		return xerrors.Errorf("Slice value in field t.Start was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Start)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Start))); err != nil {
 		return err
 	}
 	for _, v := range t.Start {
-		if err := cbg.WriteCid(w, v); err != nil {
+		if err := cbg.WriteCidBuf(scratch, w, v); err != nil {
 			return xerrors.Errorf("failed writing cid field t.Start: %w", err)
 		}
 	}

 	// t.RequestLength (uint64) (uint64)
-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.RequestLength))); err != nil {
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.RequestLength)); err != nil {
 		return err
 	}

 	// t.Options (uint64) (uint64)
-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.Options))); err != nil {
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Options)); err != nil {
 		return err
 	}
+
 	return nil
 }

 func (t *BlockSyncRequest) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -66,7 +74,7 @@ func (t *BlockSyncRequest) UnmarshalCBOR(r io.Reader) error {

 	// t.Start ([]cid.Cid) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -78,9 +86,11 @@ func (t *BlockSyncRequest) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.Start = make([]cid.Cid, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {

 		c, err := cbg.ReadCid(br)
@@ -92,42 +102,54 @@ func (t *BlockSyncRequest) UnmarshalCBOR(r io.Reader) error {

 	// t.RequestLength (uint64) (uint64)

-	maj, extra, err = cbg.CborReadHeader(br)
-	if err != nil {
-		return err
+	{
+
+		maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+		if err != nil {
+			return err
+		}
+		if maj != cbg.MajUnsignedInt {
+			return fmt.Errorf("wrong type for uint64 field")
+		}
+		t.RequestLength = uint64(extra)
+
 	}
-	if maj != cbg.MajUnsignedInt {
-		return fmt.Errorf("wrong type for uint64 field")
-	}
-	t.RequestLength = uint64(extra)
 	// t.Options (uint64) (uint64)

-	maj, extra, err = cbg.CborReadHeader(br)
-	if err != nil {
-		return err
+	{
+
+		maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+		if err != nil {
+			return err
+		}
+		if maj != cbg.MajUnsignedInt {
+			return fmt.Errorf("wrong type for uint64 field")
+		}
+		t.Options = uint64(extra)
+
 	}
-	if maj != cbg.MajUnsignedInt {
-		return fmt.Errorf("wrong type for uint64 field")
-	}
-	t.Options = uint64(extra)
 	return nil
 }

+var lengthBufBlockSyncResponse = []byte{131}
+
 func (t *BlockSyncResponse) MarshalCBOR(w io.Writer) error {
 	if t == nil {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{131}); err != nil {
+	if _, err := w.Write(lengthBufBlockSyncResponse); err != nil {
 		return err
 	}

+	scratch := make([]byte, 9)
+
 	// t.Chain ([]*blocksync.BSTipSet) (slice)
 	if len(t.Chain) > cbg.MaxLength {
 		return xerrors.Errorf("Slice value in field t.Chain was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Chain)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Chain))); err != nil {
 		return err
 	}
 	for _, v := range t.Chain {
@@ -137,7 +159,8 @@ func (t *BlockSyncResponse) MarshalCBOR(w io.Writer) error {
 	}

 	// t.Status (uint64) (uint64)
-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajUnsignedInt, uint64(t.Status))); err != nil {
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajUnsignedInt, uint64(t.Status)); err != nil {
 		return err
 	}

@@ -146,10 +169,10 @@ func (t *BlockSyncResponse) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Value in field t.Message was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajTextString, uint64(len(t.Message)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len(t.Message))); err != nil {
 		return err
 	}
-	if _, err := w.Write([]byte(t.Message)); err != nil {
+	if _, err := io.WriteString(w, t.Message); err != nil {
 		return err
 	}
 	return nil
@@ -157,8 +180,9 @@ func (t *BlockSyncResponse) MarshalCBOR(w io.Writer) error {

 func (t *BlockSyncResponse) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -172,7 +196,7 @@ func (t *BlockSyncResponse) UnmarshalCBOR(r io.Reader) error {

 	// t.Chain ([]*blocksync.BSTipSet) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -184,9 +208,11 @@ func (t *BlockSyncResponse) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.Chain = make([]*BSTipSet, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {

 		var v BSTipSet
@@ -199,18 +225,22 @@ func (t *BlockSyncResponse) UnmarshalCBOR(r io.Reader) error {

 	// t.Status (uint64) (uint64)

-	maj, extra, err = cbg.CborReadHeader(br)
-	if err != nil {
-		return err
+	{
+
+		maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+		if err != nil {
+			return err
+		}
+		if maj != cbg.MajUnsignedInt {
+			return fmt.Errorf("wrong type for uint64 field")
+		}
+		t.Status = uint64(extra)
+
 	}
-	if maj != cbg.MajUnsignedInt {
-		return fmt.Errorf("wrong type for uint64 field")
-	}
-	t.Status = uint64(extra)
 	// t.Message (string) (string)

 	{
-		sval, err := cbg.ReadString(br)
+		sval, err := cbg.ReadStringBuf(br, scratch)
 		if err != nil {
 			return err
 		}
@@ -220,21 +250,25 @@ func (t *BlockSyncResponse) UnmarshalCBOR(r io.Reader) error {
 	return nil
 }

+var lengthBufBSTipSet = []byte{133}
+
 func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 	if t == nil {
 		_, err := w.Write(cbg.CborNull)
 		return err
 	}
-	if _, err := w.Write([]byte{133}); err != nil {
+	if _, err := w.Write(lengthBufBSTipSet); err != nil {
 		return err
 	}

+	scratch := make([]byte, 9)
+
 	// t.Blocks ([]*types.BlockHeader) (slice)
 	if len(t.Blocks) > cbg.MaxLength {
 		return xerrors.Errorf("Slice value in field t.Blocks was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Blocks)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Blocks))); err != nil {
 		return err
 	}
 	for _, v := range t.Blocks {
@@ -248,7 +282,7 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.BlsMessages was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.BlsMessages)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.BlsMessages))); err != nil {
 		return err
 	}
 	for _, v := range t.BlsMessages {
@@ -262,7 +296,7 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.BlsMsgIncludes was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.BlsMsgIncludes)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.BlsMsgIncludes))); err != nil {
 		return err
 	}
 	for _, v := range t.BlsMsgIncludes {
@@ -270,11 +304,11 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 			return xerrors.Errorf("Slice value in field v was too long")
 		}

-		if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(v)))); err != nil {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(v))); err != nil {
 			return err
 		}
 		for _, v := range v {
-			if err := cbg.CborWriteHeader(w, cbg.MajUnsignedInt, v); err != nil {
+			if err := cbg.CborWriteHeader(w, cbg.MajUnsignedInt, uint64(v)); err != nil {
 				return err
 			}
 		}
@@ -285,7 +319,7 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.SecpkMessages was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.SecpkMessages)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.SecpkMessages))); err != nil {
 		return err
 	}
 	for _, v := range t.SecpkMessages {
@@ -299,7 +333,7 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 		return xerrors.Errorf("Slice value in field t.SecpkMsgIncludes was too long")
 	}

-	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.SecpkMsgIncludes)))); err != nil {
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.SecpkMsgIncludes))); err != nil {
 		return err
 	}
 	for _, v := range t.SecpkMsgIncludes {
@@ -307,11 +341,11 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {
 			return xerrors.Errorf("Slice value in field v was too long")
 		}

-		if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(v)))); err != nil {
+		if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(v))); err != nil {
 			return err
 		}
 		for _, v := range v {
-			if err := cbg.CborWriteHeader(w, cbg.MajUnsignedInt, v); err != nil {
+			if err := cbg.CborWriteHeader(w, cbg.MajUnsignedInt, uint64(v)); err != nil {
 				return err
 			}
 		}
@@ -321,8 +355,9 @@ func (t *BSTipSet) MarshalCBOR(w io.Writer) error {

 func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)

-	maj, extra, err := cbg.CborReadHeader(br)
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -336,7 +371,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {

 	// t.Blocks ([]*types.BlockHeader) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -348,9 +383,11 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.Blocks = make([]*types.BlockHeader, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {

 		var v types.BlockHeader
@@ -363,7 +400,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {

 	// t.BlsMessages ([]*types.Message) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -375,9 +412,11 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.BlsMessages = make([]*types.Message, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {

 		var v types.Message
@@ -390,7 +429,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {

 	// t.BlsMsgIncludes ([][]uint64) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -402,16 +441,18 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.BlsMsgIncludes = make([][]uint64, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {
 		{
 			var maj byte
 			var extra uint64
 			var err error

-			maj, extra, err = cbg.CborReadHeader(br)
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -423,12 +464,14 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 			if maj != cbg.MajArray {
 				return fmt.Errorf("expected cbor array")
 			}
+
 			if extra > 0 {
 				t.BlsMsgIncludes[i] = make([]uint64, extra)
 			}
+
 			for j := 0; j < int(extra); j++ {

-				maj, val, err := cbg.CborReadHeader(br)
+				maj, val, err := cbg.CborReadHeaderBuf(br, scratch)
 				if err != nil {
 					return xerrors.Errorf("failed to read uint64 for t.BlsMsgIncludes[i] slice: %w", err)
 				}
@@ -437,7 +480,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 					return xerrors.Errorf("value read for array t.BlsMsgIncludes[i] was not a uint, instead got %d", maj)
 				}

-				t.BlsMsgIncludes[i][j] = val
+				t.BlsMsgIncludes[i][j] = uint64(val)
 			}

 		}
@@ -445,7 +488,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {

 	// t.SecpkMessages ([]*types.SignedMessage) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -457,9 +500,11 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.SecpkMessages = make([]*types.SignedMessage, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {

 		var v types.SignedMessage
@@ -472,7 +517,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {

 	// t.SecpkMsgIncludes ([][]uint64) (slice)

-	maj, extra, err = cbg.CborReadHeader(br)
+	maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 	if err != nil {
 		return err
 	}
@@ -484,16 +529,18 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 	if maj != cbg.MajArray {
 		return fmt.Errorf("expected cbor array")
 	}
+
 	if extra > 0 {
 		t.SecpkMsgIncludes = make([][]uint64, extra)
 	}
+
 	for i := 0; i < int(extra); i++ {
 		{
 			var maj byte
 			var extra uint64
 			var err error

-			maj, extra, err = cbg.CborReadHeader(br)
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
 			if err != nil {
 				return err
 			}
@@ -505,12 +552,14 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 			if maj != cbg.MajArray {
 				return fmt.Errorf("expected cbor array")
 			}
+
 			if extra > 0 {
 				t.SecpkMsgIncludes[i] = make([]uint64, extra)
 			}
+
 			for j := 0; j < int(extra); j++ {

-				maj, val, err := cbg.CborReadHeader(br)
+				maj, val, err := cbg.CborReadHeaderBuf(br, scratch)
 				if err != nil {
 					return xerrors.Errorf("failed to read uint64 for t.SecpkMsgIncludes[i] slice: %w", err)
 				}
@@ -519,7 +568,7 @@ func (t *BSTipSet) UnmarshalCBOR(r io.Reader) error {
 					return xerrors.Errorf("value read for array t.SecpkMsgIncludes[i] was not a uint, instead got %d", maj)
 				}

-				t.SecpkMsgIncludes[i][j] = val
+				t.SecpkMsgIncludes[i][j] = uint64(val)
 			}

 		}
@@ -0,0 +1,151 @@
+package blocksync
+
+import (
+	"context"
+
+	"github.com/ipfs/go-cid"
+	"github.com/ipfs/go-datastore"
+	"github.com/ipfs/go-graphsync"
+	"github.com/ipld/go-ipld-prime"
+	"github.com/libp2p/go-libp2p-core/peer"
+	"golang.org/x/xerrors"
+
+	store "github.com/filecoin-project/lotus/chain/store"
+	"github.com/filecoin-project/lotus/chain/types"
+
+	cidlink "github.com/ipld/go-ipld-prime/linking/cid"
+	basicnode "github.com/ipld/go-ipld-prime/node/basic"
+	ipldselector "github.com/ipld/go-ipld-prime/traversal/selector"
+	selectorbuilder "github.com/ipld/go-ipld-prime/traversal/selector/builder"
+)
+
+const (
+
+	// AMT selector recursion. An AMT has arity of 8 so this gives allows
+	// us to retrieve trees with 8^10 (1,073,741,824) elements.
+	amtRecursionDepth = uint32(10)
+
+	// some constants for looking up tuple encoded struct fields
+	// field index of Parents field in a block header
+	blockIndexParentsField = 5
+
+	// field index of Messages field in a block header
+	blockIndexMessagesField = 10
+
+	// field index of AMT node in AMT head
+	amtHeadNodeFieldIndex = 2
+
+	// field index of links array AMT node
+	amtNodeLinksFieldIndex = 1
+
+	// field index of values array AMT node
+	amtNodeValuesFieldIndex = 2
+
+	// maximum depth per traversal
+	maxRequestLength = 50
+)
+
+var amtSelector selectorbuilder.SelectorSpec
+
+func init() {
+	// builer for selectors
+	ssb := selectorbuilder.NewSelectorSpecBuilder(basicnode.Style.Any)
+	// amt selector -- needed to selector through a messages AMT
+	amtSelector = ssb.ExploreIndex(amtHeadNodeFieldIndex,
+		ssb.ExploreRecursive(ipldselector.RecursionLimitDepth(int(amtRecursionDepth)),
+			ssb.ExploreUnion(
+				ssb.ExploreIndex(amtNodeLinksFieldIndex,
+					ssb.ExploreAll(ssb.ExploreRecursiveEdge())),
+				ssb.ExploreIndex(amtNodeValuesFieldIndex,
+					ssb.ExploreAll(ssb.Matcher())))))
+}
+
+func selectorForRequest(req *BlockSyncRequest) ipld.Node {
+	// builer for selectors
+	ssb := selectorbuilder.NewSelectorSpecBuilder(basicnode.Style.Any)
+
+	bso := ParseBSOptions(req.Options)
+	if bso.IncludeMessages {
+		return ssb.ExploreRecursive(ipldselector.RecursionLimitDepth(int(req.RequestLength)),
+			ssb.ExploreIndex(blockIndexParentsField,
+				ssb.ExploreUnion(
+					ssb.ExploreAll(
+						ssb.ExploreIndex(blockIndexMessagesField,
+							ssb.ExploreRange(0, 2, amtSelector),
+						)),
+					ssb.ExploreIndex(0, ssb.ExploreRecursiveEdge()),
+				))).Node()
+	}
+	return ssb.ExploreRecursive(ipldselector.RecursionLimitDepth(int(req.RequestLength)), ssb.ExploreIndex(blockIndexParentsField,
+		ssb.ExploreUnion(
+			ssb.ExploreAll(
+				ssb.Matcher(),
+			),
+			ssb.ExploreIndex(0, ssb.ExploreRecursiveEdge()),
+		))).Node()
+}
+
+func firstTipsetSelector(req *BlockSyncRequest) ipld.Node {
+	// builer for selectors
+	ssb := selectorbuilder.NewSelectorSpecBuilder(basicnode.Style.Any)
+
+	bso := ParseBSOptions(req.Options)
+	if bso.IncludeMessages {
+		return ssb.ExploreIndex(blockIndexMessagesField,
+			ssb.ExploreRange(0, 2, amtSelector),
+		).Node()
+	}
+	return ssb.Matcher().Node()
+
+}
+
+func (bs *BlockSync) executeGsyncSelector(ctx context.Context, p peer.ID, root cid.Cid, sel ipld.Node) error {
+	extension := graphsync.ExtensionData{
+		Name: "chainsync",
+		Data: nil,
+	}
+	_, errs := bs.gsync.Request(ctx, p, cidlink.Link{Cid: root}, sel, extension)
+
+	for err := range errs {
+		return xerrors.Errorf("failed to complete graphsync request: %w", err)
+	}
+	return nil
+}
+
+// Fallback for interacting with other non-lotus nodes
+func (bs *BlockSync) fetchBlocksGraphSync(ctx context.Context, p peer.ID, req *BlockSyncRequest) (*BlockSyncResponse, error) {
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	immediateTsSelector := firstTipsetSelector(req)
+
+	// Do this because we can only request one root at a time
+	for _, r := range req.Start {
+		if err := bs.executeGsyncSelector(ctx, p, r, immediateTsSelector); err != nil {
+			return nil, err
+		}
+	}
+
+	if req.RequestLength > maxRequestLength {
+		req.RequestLength = maxRequestLength
+	}
+
+	sel := selectorForRequest(req)
+
+	// execute the selector forreal
+	if err := bs.executeGsyncSelector(ctx, p, req.Start[0], sel); err != nil {
+		return nil, err
+	}
+
+	// Now pull the data we fetched out of the chainstore (where it should now be persisted)
+	tempcs := store.NewChainStore(bs.bserv.Blockstore(), datastore.NewMapDatastore(), nil)
+
+	opts := ParseBSOptions(req.Options)
+	tsk := types.NewTipSetKey(req.Start...)
+	chain, err := collectChainSegment(tempcs, tsk, req.RequestLength, opts)
+	if err != nil {
+		return nil, xerrors.Errorf("failed to load chain data from chainstore after successful graphsync response (start = %v): %w", req.Start, err)
+	}
+
+	return &BlockSyncResponse{Chain: chain}, nil
+}
@@ -5,6 +5,7 @@ import (
 	"sync"
 	"time"

+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/ipfs/go-cid"
 	logging "github.com/ipfs/go-log/v2"
 	"golang.org/x/xerrors"
@@ -18,8 +19,8 @@ import (

 var log = logging.Logger("events")

-// `curH`-`ts.Height` = `confidence`
-type HeightHandler func(ctx context.Context, ts *types.TipSet, curH uint64) error
+// HeightHandler `curH`-`ts.Height` = `confidence`
+type HeightHandler func(ctx context.Context, ts *types.TipSet, curH abi.ChainEpoch) error
 type RevertHandler func(ctx context.Context, ts *types.TipSet) error

 type heightHandler struct {
@@ -30,17 +31,18 @@ type heightHandler struct {
 	revert RevertHandler
 }

-type eventApi interface {
-	ChainNotify(context.Context) (<-chan []*store.HeadChange, error)
+type eventAPI interface {
+	ChainNotify(context.Context) (<-chan []*api.HeadChange, error)
 	ChainGetBlockMessages(context.Context, cid.Cid) (*api.BlockMessages, error)
-	ChainGetTipSetByHeight(context.Context, uint64, types.TipSetKey) (*types.TipSet, error)
+	ChainGetTipSetByHeight(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error)
 	StateGetReceipt(context.Context, cid.Cid, types.TipSetKey) (*types.MessageReceipt, error)
+	ChainGetTipSet(context.Context, types.TipSetKey) (*types.TipSet, error)

 	StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error) // optional / for CalledMsg
 }

 type Events struct {
-	api eventApi
+	api eventAPI

 	tsc *tipSetCache
 	lk  sync.Mutex
@@ -49,10 +51,10 @@ type Events struct {
 	readyOnce sync.Once

 	heightEvents
-	calledEvents
+	*hcEvents
 }

-func NewEvents(ctx context.Context, api eventApi) *Events {
+func NewEvents(ctx context.Context, api eventAPI) *Events {
 	gcConfidence := 2 * build.ForkLengthThreshold

 	tsc := newTSCache(gcConfidence, api.ChainGetTipSetByHeight)
@@ -65,25 +67,14 @@ func NewEvents(ctx context.Context, api eventApi) *Events {
 		heightEvents: heightEvents{
 			tsc:          tsc,
 			ctx:          ctx,
-			gcConfidence: uint64(gcConfidence),
+			gcConfidence: gcConfidence,

 			heightTriggers:   map[uint64]*heightHandler{},
-			htTriggerHeights: map[uint64][]uint64{},
-			htHeights:        map[uint64][]uint64{},
+			htTriggerHeights: map[abi.ChainEpoch][]uint64{},
+			htHeights:        map[abi.ChainEpoch][]uint64{},
 		},

-		calledEvents: calledEvents{
-			cs:           api,
-			tsc:          tsc,
-			ctx:          ctx,
-			gcConfidence: uint64(gcConfidence),
-
-			confQueue:   map[triggerH]map[msgH][]*queuedEvent{},
-			revertQueue: map[msgH][]triggerH{},
-			triggers:    map[triggerId]*callHandler{},
-			matchers:    map[triggerId][]MatchFunc{},
-			timeouts:    map[uint64]map[triggerId]int{},
-		},
+		hcEvents: newHCEvents(ctx, api, tsc, uint64(gcConfidence)),
 	}

 	e.ready.Add(1)
@@ -141,6 +132,8 @@ func (e *Events) listenHeadChangesOnce(ctx context.Context) error {
 	}

 	e.readyOnce.Do(func() {
+		e.lastTs = cur[0].Val
+
 		e.ready.Done()
 	})

@@ -160,6 +153,11 @@ func (e *Events) listenHeadChangesOnce(ctx context.Context) error {
 		if err := e.headChange(rev, app); err != nil {
 			log.Warnf("headChange failed: %s", err)
 		}
+
+		// sync with fake chainstore (for tests)
+		if fcs, ok := e.api.(interface{ notifDone() }); ok {
+			fcs.notifDone()
+		}
 	}

 	return nil
@@ -177,5 +175,5 @@ func (e *Events) headChange(rev, app []*types.TipSet) error {
 		return err
 	}

-	return e.headChangeCalled(rev, app)
+	return e.processHeadChangeEvent(rev, app)
 }
@@ -5,69 +5,79 @@ import (
 	"math"
 	"sync"

+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/ipfs/go-cid"
 	"golang.org/x/xerrors"

-	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
 )

-const NoTimeout = math.MaxUint64
+const NoTimeout = math.MaxInt64
+const NoHeight = abi.ChainEpoch(-1)

-type triggerId = uint64
+type triggerID = uint64

 // msgH is the block height at which a message was present / event has happened
-type msgH = uint64
+type msgH = abi.ChainEpoch

 // triggerH is the block height at which the listener will be notified about the
 //  message (msgH+confidence)
-type triggerH = uint64
+type triggerH = abi.ChainEpoch

-// `ts` is the tipset, in which the `msg` is included.
+type eventData interface{}
+
+// EventHandler arguments:
+// `prevTs` is the previous tipset, eg the "from" tipset for a state change.
+// `ts` is the event tipset, eg the tipset in which the `msg` is included.
 // `curH`-`ts.Height` = `confidence`
-type CalledHandler func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH uint64) (more bool, err error)
+type EventHandler func(data eventData, prevTs, ts *types.TipSet, curH abi.ChainEpoch) (more bool, err error)

 // CheckFunc is used for atomicity guarantees. If the condition the callbacks
 // wait for has already happened in tipset `ts`
 //
 // If `done` is true, timeout won't be triggered
-// If `more` is false, no messages will be sent to CalledHandler (RevertHandler
+// If `more` is false, no messages will be sent to EventHandler (RevertHandler
 //  may still be called)
 type CheckFunc func(ts *types.TipSet) (done bool, more bool, err error)

-type MatchFunc func(msg *types.Message) (bool, error)
-
-type callHandler struct {
+// Keep track of information for an event handler
+type handlerInfo struct {
 	confidence int
-	timeout    uint64
+	timeout    abi.ChainEpoch

 	disabled bool // TODO: GC after gcConfidence reached

-	handle CalledHandler
+	handle EventHandler
 	revert RevertHandler
 }

+// When a change occurs, a queuedEvent is created and put into a queue
+// until the required confidence is reached
 type queuedEvent struct {
-	trigger triggerId
+	trigger triggerID

-	h   uint64
-	msg *types.Message
+	prevH abi.ChainEpoch
+	h     abi.ChainEpoch
+	data  eventData

 	called bool
 }

-type calledEvents struct {
-	cs           eventApi
+// Manages chain head change events, which may be forward (new tipset added to
+// chain) or backward (chain branch discarded in favour of heavier branch)
+type hcEvents struct {
+	cs           eventAPI
 	tsc          *tipSetCache
 	ctx          context.Context
 	gcConfidence uint64

+	lastTs *types.TipSet
+
 	lk sync.Mutex

-	ctr triggerId
+	ctr triggerID

-	triggers map[triggerId]*callHandler
-	matchers map[triggerId][]MatchFunc
+	triggers map[triggerID]*handlerInfo

 	// maps block heights to events
 	// [triggerH][msgH][event]
@@ -76,27 +86,81 @@ type calledEvents struct {
 	// [msgH][triggerH]
 	revertQueue map[msgH][]triggerH

-	// [timeoutH+confidence][triggerId]{calls}
-	timeouts map[uint64]map[triggerId]int
+	// [timeoutH+confidence][triggerID]{calls}
+	timeouts map[abi.ChainEpoch]map[triggerID]int
+
+	messageEvents
+	watcherEvents
 }

-func (e *calledEvents) headChangeCalled(rev, app []*types.TipSet) error {
+func newHCEvents(ctx context.Context, cs eventAPI, tsc *tipSetCache, gcConfidence uint64) *hcEvents {
+	e := hcEvents{
+		ctx:          ctx,
+		cs:           cs,
+		tsc:          tsc,
+		gcConfidence: gcConfidence,
+
+		confQueue:   map[triggerH]map[msgH][]*queuedEvent{},
+		revertQueue: map[msgH][]triggerH{},
+		triggers:    map[triggerID]*handlerInfo{},
+		timeouts:    map[abi.ChainEpoch]map[triggerID]int{},
+	}
+
+	e.messageEvents = newMessageEvents(ctx, &e, cs)
+	e.watcherEvents = newWatcherEvents(ctx, &e, cs)
+
+	return &e
+}
+
+// Called when there is a change to the head with tipsets to be
+// reverted / applied
+func (e *hcEvents) processHeadChangeEvent(rev, app []*types.TipSet) error {
+	e.lk.Lock()
+	defer e.lk.Unlock()
+
 	for _, ts := range rev {
 		e.handleReverts(ts)
+		e.lastTs = ts
 	}

 	for _, ts := range app {
-		// called triggers
+		// Check if the head change caused any state changes that we were
+		// waiting for
+		stateChanges := e.watcherEvents.checkStateChanges(e.lastTs, ts)

-		e.checkNewCalls(ts)
-		e.applyWithConfidence(ts)
-		e.applyTimeouts(ts)
+		// Queue up calls until there have been enough blocks to reach
+		// confidence on the state changes
+		for tid, data := range stateChanges {
+			e.queueForConfidence(tid, data, e.lastTs, ts)
+		}
+
+		// Check if the head change included any new message calls
+		newCalls, err := e.messageEvents.checkNewCalls(ts)
+		if err != nil {
+			return err
+		}
+
+		// Queue up calls until there have been enough blocks to reach
+		// confidence on the message calls
+		for tid, data := range newCalls {
+			e.queueForConfidence(tid, data, nil, ts)
+		}
+
+		for at := e.lastTs.Height(); at <= ts.Height(); at++ {
+			// Apply any queued events and timeouts that were targeted at the
+			// current chain height
+			e.applyWithConfidence(ts, at)
+			e.applyTimeouts(ts)
+		}
+
+		// Update the latest known tipset
+		e.lastTs = ts
 	}

 	return nil
 }

-func (e *calledEvents) handleReverts(ts *types.TipSet) {
+func (e *hcEvents) handleReverts(ts *types.TipSet) {
 	reverts, ok := e.revertQueue[ts.Height()]
 	if !ok {
 		return // nothing to do
@@ -112,7 +176,7 @@ func (e *calledEvents) handleReverts(ts *types.TipSet) {
 			trigger := e.triggers[event.trigger]

 			if err := trigger.revert(e.ctx, ts); err != nil {
-				log.Errorf("reverting chain trigger (call %s.%d() @H %d, called @ %d) failed: %s", event.msg.To, event.msg.Method, ts.Height(), triggerH, err)
+				log.Errorf("reverting chain trigger (@H %d, triggered @ %d) failed: %s", ts.Height(), triggerH, err)
 			}
 		}
 		delete(e.confQueue[triggerH], ts.Height())
@@ -120,66 +184,46 @@ func (e *calledEvents) handleReverts(ts *types.TipSet) {
 	delete(e.revertQueue, ts.Height())
 }

-func (e *calledEvents) checkNewCalls(ts *types.TipSet) {
-	e.messagesForTs(ts, func(msg *types.Message) {
-		// TODO: provide receipts
+// Queue up events until the chain has reached a height that reflects the
+// desired confidence
+func (e *hcEvents) queueForConfidence(trigID uint64, data eventData, prevTs, ts *types.TipSet) {
+	trigger := e.triggers[trigID]

-		for tid, matchFns := range e.matchers {
-			var matched bool
-			for _, matchFn := range matchFns {
-				ok, err := matchFn(msg)
-				if err != nil {
-					log.Warnf("event matcher failed: %s")
-					continue
-				}
-				matched = ok
+	prevH := NoHeight
+	if prevTs != nil {
+		prevH = prevTs.Height()
+	}
+	appliedH := ts.Height()

-				if matched {
-					break
-				}
-			}
-
-			if matched {
-				e.queueForConfidence(tid, msg, ts)
-				break
-			}
-		}
-	})
-}
-
-func (e *calledEvents) queueForConfidence(triggerId uint64, msg *types.Message, ts *types.TipSet) {
-	trigger := e.triggers[triggerId]
-
-	// messages are not applied in the tipset they are included in
-	appliedH := ts.Height() + 1
-
-	triggerH := appliedH + uint64(trigger.confidence)
+	triggerH := appliedH + abi.ChainEpoch(trigger.confidence)

 	byOrigH, ok := e.confQueue[triggerH]
 	if !ok {
-		byOrigH = map[uint64][]*queuedEvent{}
+		byOrigH = map[abi.ChainEpoch][]*queuedEvent{}
 		e.confQueue[triggerH] = byOrigH
 	}

 	byOrigH[appliedH] = append(byOrigH[appliedH], &queuedEvent{
-		trigger: triggerId,
+		trigger: trigID,
+		prevH:   prevH,
 		h:       appliedH,
-		msg:     msg,
+		data:    data,
 	})

 	e.revertQueue[appliedH] = append(e.revertQueue[appliedH], triggerH)
 }

-func (e *calledEvents) applyWithConfidence(ts *types.TipSet) {
-	byOrigH, ok := e.confQueue[ts.Height()]
+// Apply any events that were waiting for this chain height for confidence
+func (e *hcEvents) applyWithConfidence(ts *types.TipSet, height abi.ChainEpoch) {
+	byOrigH, ok := e.confQueue[height]
 	if !ok {
-		return // no triggers at thin height
+		return // no triggers at this height
 	}

 	for origH, events := range byOrigH {
 		triggerTs, err := e.tsc.get(origH)
 		if err != nil {
-			log.Errorf("events: applyWithConfidence didn't find tipset for event; wanted %d; current %d", origH, ts.Height())
+			log.Errorf("events: applyWithConfidence didn't find tipset for event; wanted %d; current %d", origH, height)
 		}

 		for _, event := range events {
@@ -192,15 +236,20 @@ func (e *calledEvents) applyWithConfidence(ts *types.TipSet) {
 				continue
 			}

-			rec, err := e.cs.StateGetReceipt(e.ctx, event.msg.Cid(), ts.Key())
-			if err != nil {
-				log.Error(err)
-				return
+			// Previous tipset - this is relevant for example in a state change
+			// from one tipset to another
+			var prevTs *types.TipSet
+			if event.prevH != NoHeight {
+				prevTs, err = e.tsc.get(event.prevH)
+				if err != nil {
+					log.Errorf("events: applyWithConfidence didn't find tipset for previous event; wanted %d; current %d", event.prevH, height)
+					continue
+				}
 			}

-			more, err := trigger.handle(event.msg, rec, triggerTs, ts.Height())
+			more, err := trigger.handle(event.data, prevTs, triggerTs, height)
 			if err != nil {
-				log.Errorf("chain trigger (call %s.%d() @H %d, called @ %d) failed: %s", event.msg.To, event.msg.Method, origH, ts.Height(), err)
+				log.Errorf("chain trigger (@H %d, triggered @ %d) failed: %s", origH, height, err)
 				continue // don't revert failed calls
 			}

@@ -216,24 +265,25 @@ func (e *calledEvents) applyWithConfidence(ts *types.TipSet) {
 	}
 }

-func (e *calledEvents) applyTimeouts(ts *types.TipSet) {
+// Apply any timeouts that expire at this height
+func (e *hcEvents) applyTimeouts(ts *types.TipSet) {
 	triggers, ok := e.timeouts[ts.Height()]
 	if !ok {
 		return // nothing to do
 	}

-	for triggerId, calls := range triggers {
+	for triggerID, calls := range triggers {
 		if calls > 0 {
 			continue // don't timeout if the method was called
 		}
-		trigger := e.triggers[triggerId]
+		trigger := e.triggers[triggerID]
 		if trigger.disabled {
 			continue
 		}

-		timeoutTs, err := e.tsc.get(ts.Height() - uint64(trigger.confidence))
+		timeoutTs, err := e.tsc.get(ts.Height() - abi.ChainEpoch(trigger.confidence))
 		if err != nil {
-			log.Errorf("events: applyTimeouts didn't find tipset for event; wanted %d; current %d", ts.Height()-uint64(trigger.confidence), ts.Height())
+			log.Errorf("events: applyTimeouts didn't find tipset for event; wanted %d; current %d", ts.Height()-abi.ChainEpoch(trigger.confidence), ts.Height())
 		}

 		more, err := trigger.handle(nil, nil, timeoutTs, ts.Height())
@@ -246,12 +296,225 @@ func (e *calledEvents) applyTimeouts(ts *types.TipSet) {
 	}
 }

-func (e *calledEvents) messagesForTs(ts *types.TipSet, consume func(*types.Message)) {
+// Listen for an event
+// - CheckFunc: immediately checks if the event already occurred
+// - EventHandler: called when the event has occurred, after confidence tipsets
+// - RevertHandler: called if the chain head changes causing the event to revert
+// - confidence: wait this many tipsets before calling EventHandler
+// - timeout: at this chain height, timeout on waiting for this event
+func (e *hcEvents) onHeadChanged(check CheckFunc, hnd EventHandler, rev RevertHandler, confidence int, timeout abi.ChainEpoch) (triggerID, error) {
+	e.lk.Lock()
+	defer e.lk.Unlock()
+
+	// Check if the event has already occurred
+	ts := e.tsc.best()
+	done, more, err := check(ts)
+	if err != nil {
+		return 0, xerrors.Errorf("called check error (h: %d): %w", ts.Height(), err)
+	}
+	if done {
+		timeout = NoTimeout
+	}
+
+	// Create a trigger for the event
+	id := e.ctr
+	e.ctr++
+
+	e.triggers[id] = &handlerInfo{
+		confidence: confidence,
+		timeout:    timeout + abi.ChainEpoch(confidence),
+
+		disabled: !more,
+
+		handle: hnd,
+		revert: rev,
+	}
+
+	// If there's a timeout, set up a timeout check at that height
+	if timeout != NoTimeout {
+		if e.timeouts[timeout+abi.ChainEpoch(confidence)] == nil {
+			e.timeouts[timeout+abi.ChainEpoch(confidence)] = map[uint64]int{}
+		}
+		e.timeouts[timeout+abi.ChainEpoch(confidence)][id] = 0
+	}
+
+	return id, nil
+}
+
+// headChangeAPI is used to allow the composed event APIs to call back to hcEvents
+// to listen for changes
+type headChangeAPI interface {
+	onHeadChanged(check CheckFunc, hnd EventHandler, rev RevertHandler, confidence int, timeout abi.ChainEpoch) (triggerID, error)
+}
+
+// watcherEvents watches for a state change
+type watcherEvents struct {
+	ctx   context.Context
+	cs    eventAPI
+	hcAPI headChangeAPI
+
+	lk       sync.RWMutex
+	matchers map[triggerID]StateMatchFunc
+}
+
+func newWatcherEvents(ctx context.Context, hcAPI headChangeAPI, cs eventAPI) watcherEvents {
+	return watcherEvents{
+		ctx:      ctx,
+		cs:       cs,
+		hcAPI:    hcAPI,
+		matchers: make(map[triggerID]StateMatchFunc),
+	}
+}
+
+// Run each of the matchers against the previous and current state to see if
+// there's a change
+func (we *watcherEvents) checkStateChanges(oldState, newState *types.TipSet) map[triggerID]eventData {
+	we.lk.RLock()
+	defer we.lk.RUnlock()
+
+	res := make(map[triggerID]eventData)
+	for tid, matchFn := range we.matchers {
+		ok, data, err := matchFn(oldState, newState)
+		if err != nil {
+			log.Errorf("event diff fn failed: %s", err)
+			continue
+		}
+
+		if ok {
+			res[tid] = data
+		}
+	}
+	return res
+}
+
+// StateChange represents a change in state
+type StateChange interface{}
+
+// StateChangeHandler arguments:
+// `oldTs` is the state "from" tipset
+// `newTs` is the state "to" tipset
+// `states` is the change in state
+// `curH`-`ts.Height` = `confidence`
+type StateChangeHandler func(oldTs, newTs *types.TipSet, states StateChange, curH abi.ChainEpoch) (more bool, err error)
+
+type StateMatchFunc func(oldTs, newTs *types.TipSet) (bool, StateChange, error)
+
+// StateChanged registers a callback which is triggered when a specified state
+// change occurs or a timeout is reached.
+//
+// * `CheckFunc` callback is invoked immediately with a recent tipset, it
+//    returns two booleans - `done`, and `more`.
+//
+//   * `done` should be true when some on-chain state change we are waiting
+//     for has happened. When `done` is set to true, timeout trigger is disabled.
+//
+//   * `more` should be false when we don't want to receive new notifications
+//     through StateChangeHandler. Note that notifications may still be delivered to
+//     RevertHandler
+//
+// * `StateChangeHandler` is called when the specified state change was observed
+//    on-chain, and a confidence threshold was reached, or the specified `timeout`
+//    height was reached with no state change observed. When this callback is
+//    invoked on a timeout, `oldState` and `newState` are set to nil.
+//    This callback returns a boolean specifying whether further notifications
+//    should be sent, like `more` return param from `CheckFunc` above.
+//
+// * `RevertHandler` is called after apply handler, when we drop the tipset
+//    containing the message. The tipset passed as the argument is the tipset
+//    that is being dropped. Note that the event dropped may be re-applied
+//    in a different tipset in small amount of time.
+//
+// * `StateMatchFunc` is called against each tipset state. If there is a match,
+//   the state change is queued up until the confidence interval has elapsed (and
+//   `StateChangeHandler` is called)
+func (we *watcherEvents) StateChanged(check CheckFunc, scHnd StateChangeHandler, rev RevertHandler, confidence int, timeout abi.ChainEpoch, mf StateMatchFunc) error {
+	hnd := func(data eventData, prevTs, ts *types.TipSet, height abi.ChainEpoch) (bool, error) {
+		states, ok := data.(StateChange)
+		if data != nil && !ok {
+			panic("expected StateChange")
+		}
+
+		return scHnd(prevTs, ts, states, height)
+	}
+
+	id, err := we.hcAPI.onHeadChanged(check, hnd, rev, confidence, timeout)
+	if err != nil {
+		return err
+	}
+
+	we.lk.Lock()
+	defer we.lk.Unlock()
+	we.matchers[id] = mf
+
+	return nil
+}
+
+// messageEvents watches for message calls to actors
+type messageEvents struct {
+	ctx   context.Context
+	cs    eventAPI
+	hcAPI headChangeAPI
+
+	lk       sync.RWMutex
+	matchers map[triggerID][]MsgMatchFunc
+}
+
+func newMessageEvents(ctx context.Context, hcAPI headChangeAPI, cs eventAPI) messageEvents {
+	return messageEvents{
+		ctx:      ctx,
+		cs:       cs,
+		hcAPI:    hcAPI,
+		matchers: map[triggerID][]MsgMatchFunc{},
+	}
+}
+
+// Check if there are any new actor calls
+func (me *messageEvents) checkNewCalls(ts *types.TipSet) (map[triggerID]eventData, error) {
+	pts, err := me.cs.ChainGetTipSet(me.ctx, ts.Parents()) // we actually care about messages in the parent tipset here
+	if err != nil {
+		log.Errorf("getting parent tipset in checkNewCalls: %s", err)
+		return nil, err
+	}
+
+	me.lk.RLock()
+	defer me.lk.RUnlock()
+
+	res := make(map[triggerID]eventData)
+	me.messagesForTs(pts, func(msg *types.Message) {
+		// TODO: provide receipts
+
+		for tid, matchFns := range me.matchers {
+			var matched bool
+			for _, matchFn := range matchFns {
+				ok, err := matchFn(msg)
+				if err != nil {
+					log.Errorf("event matcher failed: %s", err)
+					continue
+				}
+				matched = ok
+
+				if matched {
+					break
+				}
+			}
+
+			if matched {
+				res[tid] = msg
+				break
+			}
+		}
+	})
+
+	return res, nil
+}
+
+// Get the messages in a tipset
+func (me *messageEvents) messagesForTs(ts *types.TipSet, consume func(*types.Message)) {
 	seen := map[cid.Cid]struct{}{}

 	for _, tsb := range ts.Blocks() {

-		msgs, err := e.cs.ChainGetBlockMessages(context.TODO(), tsb.Cid())
+		msgs, err := me.cs.ChainGetBlockMessages(context.TODO(), tsb.Cid())
 		if err != nil {
 			log.Errorf("messagesForTs MessagesForBlock failed (ts.H=%d, Bcid:%s, B.Mcid:%s): %s", ts.Height(), tsb.Cid(), tsb.Messages, err)
 			// this is quite bad, but probably better than missing all the other updates
@@ -280,20 +543,27 @@ func (e *calledEvents) messagesForTs(ts *types.TipSet, consume func(*types.Messa
 	}
 }

-// Called registers a callbacks which are triggered when a specified method is
+// MsgHandler arguments:
+// `ts` is the tipset, in which the `msg` is included.
+// `curH`-`ts.Height` = `confidence`
+type MsgHandler func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (more bool, err error)
+
+type MsgMatchFunc func(msg *types.Message) (bool, error)
+
+// Called registers a callback which is triggered when a specified method is
 //  called on an actor, or a timeout is reached.
 //
 // * `CheckFunc` callback is invoked immediately with a recent tipset, it
 //    returns two booleans - `done`, and `more`.
 //
-//  * `done` should be true when some on-chain action we are waiting for has
-//    happened. When `done` is set to true, timeout trigger is disabled.
+//   * `done` should be true when some on-chain action we are waiting for has
+//     happened. When `done` is set to true, timeout trigger is disabled.
 //
-//  * `more` should be false when we don't want to receive new notifications
-//    through CalledHandler. Note that notifications may still be delivered to
-//    RevertHandler
+//   * `more` should be false when we don't want to receive new notifications
+//     through MsgHandler. Note that notifications may still be delivered to
+//     RevertHandler
 //
-// * `CalledHandler` is called when the specified event was observed on-chain,
+// * `MsgHandler` is called when the specified event was observed on-chain,
 //    and a confidence threshold was reached, or the specified `timeout` height
 //    was reached with no events observed. When this callback is invoked on a
 //    timeout, `msg` is set to nil. This callback returns a boolean specifying
@@ -304,44 +574,38 @@ func (e *calledEvents) messagesForTs(ts *types.TipSet, consume func(*types.Messa
 //    containing the message. The tipset passed as the argument is the tipset
 //    that is being dropped. Note that the message dropped may be re-applied
 //    in a different tipset in small amount of time.
-func (e *calledEvents) Called(check CheckFunc, hnd CalledHandler, rev RevertHandler, confidence int, timeout uint64, mf MatchFunc) error {
-	e.lk.Lock()
-	defer e.lk.Unlock()
-
-	ts := e.tsc.best()
-	done, more, err := check(ts)
-	if err != nil {
-		return xerrors.Errorf("called check error (h: %d): %w", ts.Height(), err)
-	}
-	if done {
-		timeout = NoTimeout
-	}
-
-	id := e.ctr
-	e.ctr++
-
-	e.triggers[id] = &callHandler{
-		confidence: confidence,
-		timeout:    timeout + uint64(confidence),
-
-		disabled: !more,
-
-		handle: hnd,
-		revert: rev,
-	}
-
-	e.matchers[id] = append(e.matchers[id], mf)
-
-	if timeout != NoTimeout {
-		if e.timeouts[timeout+uint64(confidence)] == nil {
-			e.timeouts[timeout+uint64(confidence)] = map[uint64]int{}
+//
+// * `MsgMatchFunc` is called against each message. If there is a match, the
+//   message is queued up until the confidence interval has elapsed (and
+//   `MsgHandler` is called)
+func (me *messageEvents) Called(check CheckFunc, msgHnd MsgHandler, rev RevertHandler, confidence int, timeout abi.ChainEpoch, mf MsgMatchFunc) error {
+	hnd := func(data eventData, prevTs, ts *types.TipSet, height abi.ChainEpoch) (bool, error) {
+		msg, ok := data.(*types.Message)
+		if data != nil && !ok {
+			panic("expected msg")
 		}
-		e.timeouts[timeout+uint64(confidence)][id] = 0
+
+		rec, err := me.cs.StateGetReceipt(me.ctx, msg.Cid(), ts.Key())
+		if err != nil {
+			return false, err
+		}
+
+		return msgHnd(msg, rec, ts, height)
 	}

+	id, err := me.hcAPI.onHeadChanged(check, hnd, rev, confidence, timeout)
+	if err != nil {
+		return err
+	}
+
+	me.lk.Lock()
+	defer me.lk.Unlock()
+	me.matchers[id] = append(me.matchers[id], mf)
+
 	return nil
 }

-func (e *calledEvents) CalledMsg(ctx context.Context, hnd CalledHandler, rev RevertHandler, confidence int, timeout uint64, msg store.ChainMsg) error {
-	return e.Called(e.CheckMsg(ctx, msg, hnd), hnd, rev, confidence, timeout, e.MatchMsg(msg.VMMessage()))
+// Convenience function for checking and matching messages
+func (me *messageEvents) CalledMsg(ctx context.Context, hnd MsgHandler, rev RevertHandler, confidence int, timeout abi.ChainEpoch, msg types.ChainMsg) error {
+	return me.Called(me.CheckMsg(ctx, msg, hnd), hnd, rev, confidence, timeout, me.MatchMsg(msg.VMMessage()))
 }
@@ -4,6 +4,7 @@ import (
 	"context"
 	"sync"

+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"go.opencensus.io/trace"

 	"github.com/filecoin-project/lotus/chain/types"
@@ -12,34 +13,40 @@ import (
 type heightEvents struct {
 	lk           sync.Mutex
 	tsc          *tipSetCache
-	gcConfidence uint64
+	gcConfidence abi.ChainEpoch

-	ctr triggerId
+	ctr triggerID

-	heightTriggers map[triggerId]*heightHandler
+	heightTriggers map[triggerID]*heightHandler

-	htTriggerHeights map[triggerH][]triggerId
-	htHeights        map[msgH][]triggerId
+	htTriggerHeights map[triggerH][]triggerID
+	htHeights        map[msgH][]triggerID

 	ctx context.Context
 }

 func (e *heightEvents) headChangeAt(rev, app []*types.TipSet) error {
+
 	ctx, span := trace.StartSpan(e.ctx, "events.HeightHeadChange")
 	defer span.End()
 	span.AddAttributes(trace.Int64Attribute("endHeight", int64(app[0].Height())))
 	span.AddAttributes(trace.Int64Attribute("reverts", int64(len(rev))))
 	span.AddAttributes(trace.Int64Attribute("applies", int64(len(app))))

+	e.lk.Lock()
+	defer e.lk.Unlock()
 	for _, ts := range rev {
 		// TODO: log error if h below gcconfidence
 		// revert height-based triggers

-		revert := func(h uint64, ts *types.TipSet) {
+		revert := func(h abi.ChainEpoch, ts *types.TipSet) {
 			for _, tid := range e.htHeights[h] {
 				ctx, span := trace.StartSpan(ctx, "events.HeightRevert")

-				err := e.heightTriggers[tid].revert(ctx, ts)
+				rev := e.heightTriggers[tid].revert
+				e.lk.Unlock()
+				err := rev(ctx, ts)
+				e.lk.Lock()
 				e.heightTriggers[tid].called = false

 				span.End()
@@ -80,15 +87,14 @@ func (e *heightEvents) headChangeAt(rev, app []*types.TipSet) error {

 		// height triggers

-		apply := func(h uint64, ts *types.TipSet) error {
+		apply := func(h abi.ChainEpoch, ts *types.TipSet) error {
 			for _, tid := range e.htTriggerHeights[h] {
 				hnd := e.heightTriggers[tid]
 				if hnd.called {
 					return nil
 				}
-				hnd.called = true

-				triggerH := h - uint64(hnd.confidence)
+				triggerH := h - abi.ChainEpoch(hnd.confidence)

 				incTs, err := e.tsc.getNonNull(triggerH)
 				if err != nil {
@@ -97,8 +103,11 @@ func (e *heightEvents) headChangeAt(rev, app []*types.TipSet) error {

 				ctx, span := trace.StartSpan(ctx, "events.HeightApply")
 				span.AddAttributes(trace.BoolAttribute("immediate", false))
-
-				err = hnd.handle(ctx, incTs, h)
+				handle := hnd.handle
+				e.lk.Unlock()
+				err = handle(ctx, incTs, h)
+				e.lk.Lock()
+				hnd.called = true
 				span.End()

 				if err != nil {
@@ -139,13 +148,13 @@ func (e *heightEvents) headChangeAt(rev, app []*types.TipSet) error {
 //  specified height, `RevertHandler` will be called.
 //
 // ts passed to handlers is the tipset at the specified, or above, if lower tipsets were null
-func (e *heightEvents) ChainAt(hnd HeightHandler, rev RevertHandler, confidence int, h uint64) error {
+func (e *heightEvents) ChainAt(hnd HeightHandler, rev RevertHandler, confidence int, h abi.ChainEpoch) error {

 	e.lk.Lock() // Tricky locking, check your locks if you modify this function!

 	bestH := e.tsc.best().Height()

-	if bestH >= h+uint64(confidence) {
+	if bestH >= h+abi.ChainEpoch(confidence) {
 		ts, err := e.tsc.getNonNull(h)
 		if err != nil {
 			log.Warnf("events.ChainAt: calling HandleFunc with nil tipset, not found in cache: %s", err)
@@ -168,11 +177,11 @@ func (e *heightEvents) ChainAt(hnd HeightHandler, rev RevertHandler, confidence

 	defer e.lk.Unlock()

-	if bestH >= h+uint64(confidence)+e.gcConfidence {
+	if bestH >= h+abi.ChainEpoch(confidence)+e.gcConfidence {
 		return nil
 	}

-	triggerAt := h + uint64(confidence)
+	triggerAt := h + abi.ChainEpoch(confidence)

 	id := e.ctr
 	e.ctr++
@@ -3,18 +3,20 @@ package events
 import (
 	"context"
 	"fmt"
+	"sync"
 	"testing"
-	"time"
-
-	"github.com/filecoin-project/lotus/api"
-	"github.com/filecoin-project/lotus/chain/store"

 	"github.com/ipfs/go-cid"
 	"github.com/multiformats/go-multihash"
 	"github.com/stretchr/testify/require"

 	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
 )

@@ -31,15 +33,23 @@ type fakeMsg struct {

 type fakeCS struct {
 	t   *testing.T
-	h   uint64
+	h   abi.ChainEpoch
 	tsc *tipSetCache

 	msgs    map[cid.Cid]fakeMsg
 	blkMsgs map[cid.Cid]cid.Cid

+	sync sync.Mutex
+
+	tipsets map[types.TipSetKey]*types.TipSet
+
 	sub func(rev, app []*types.TipSet)
 }

+func (fcs *fakeCS) ChainGetTipSet(ctx context.Context, key types.TipSetKey) (*types.TipSet, error) {
+	return fcs.tipsets[key], nil
+}
+
 func (fcs *fakeCS) StateGetReceipt(context.Context, cid.Cid, types.TipSetKey) (*types.MessageReceipt, error) {
 	return nil, nil
 }
@@ -48,11 +58,11 @@ func (fcs *fakeCS) StateGetActor(ctx context.Context, actor address.Address, tsk
 	panic("Not Implemented")
 }

-func (fcs *fakeCS) ChainGetTipSetByHeight(context.Context, uint64, types.TipSetKey) (*types.TipSet, error) {
+func (fcs *fakeCS) ChainGetTipSetByHeight(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error) {
 	panic("Not Implemented")
 }

-func makeTs(t *testing.T, h uint64, msgcid cid.Cid) *types.TipSet {
+func (fcs *fakeCS) makeTs(t *testing.T, parents []cid.Cid, h abi.ChainEpoch, msgcid cid.Cid) *types.TipSet {
 	a, _ := address.NewFromString("t00")
 	b, _ := address.NewFromString("t02")
 	var ts, err = types.NewTipSet([]*types.BlockHeader{
@@ -60,50 +70,59 @@ func makeTs(t *testing.T, h uint64, msgcid cid.Cid) *types.TipSet {
 			Height: h,
 			Miner:  a,

+			Parents: parents,
+
 			Ticket: &types.Ticket{VRFProof: []byte{byte(h % 2)}},

 			ParentStateRoot:       dummyCid,
 			Messages:              msgcid,
 			ParentMessageReceipts: dummyCid,

-			BlockSig:     &types.Signature{Type: types.KTBLS},
-			BLSAggregate: types.Signature{Type: types.KTBLS},
+			BlockSig:     &crypto.Signature{Type: crypto.SigTypeBLS},
+			BLSAggregate: &crypto.Signature{Type: crypto.SigTypeBLS},
 		},
 		{
 			Height: h,
 			Miner:  b,

+			Parents: parents,
+
 			Ticket: &types.Ticket{VRFProof: []byte{byte((h + 1) % 2)}},

 			ParentStateRoot:       dummyCid,
 			Messages:              msgcid,
 			ParentMessageReceipts: dummyCid,

-			BlockSig:     &types.Signature{Type: types.KTBLS},
-			BLSAggregate: types.Signature{Type: types.KTBLS},
+			BlockSig:     &crypto.Signature{Type: crypto.SigTypeBLS},
+			BLSAggregate: &crypto.Signature{Type: crypto.SigTypeBLS},
 		},
 	})

+	if fcs.tipsets == nil {
+		fcs.tipsets = map[types.TipSetKey]*types.TipSet{}
+	}
+	fcs.tipsets[ts.Key()] = ts
+
 	require.NoError(t, err)

 	return ts
 }

-func (fcs *fakeCS) ChainNotify(context.Context) (<-chan []*store.HeadChange, error) {
-	out := make(chan []*store.HeadChange, 1)
-	out <- []*store.HeadChange{{Type: store.HCCurrent, Val: fcs.tsc.best()}}
+func (fcs *fakeCS) ChainNotify(context.Context) (<-chan []*api.HeadChange, error) {
+	out := make(chan []*api.HeadChange, 1)
+	out <- []*api.HeadChange{{Type: store.HCCurrent, Val: fcs.tsc.best()}}

 	fcs.sub = func(rev, app []*types.TipSet) {
-		notif := make([]*store.HeadChange, len(rev)+len(app))
+		notif := make([]*api.HeadChange, len(rev)+len(app))

 		for i, r := range rev {
-			notif[i] = &store.HeadChange{
+			notif[i] = &api.HeadChange{
 				Type: store.HCRevert,
 				Val:  r,
 			}
 		}
 		for i, r := range app {
-			notif[i+len(rev)] = &store.HeadChange{
+			notif[i+len(rev)] = &api.HeadChange{
 				Type: store.HCApply,
 				Val:  r,
 			}
@@ -177,7 +196,7 @@ func (fcs *fakeCS) advance(rev, app int, msgs map[int]cid.Cid, nulls ...int) { /
 			continue
 		}

-		ts := makeTs(fcs.t, fcs.h, mc)
+		ts := fcs.makeTs(fcs.t, fcs.tsc.best().Key().Cids(), fcs.h, mc)
 		require.NoError(fcs.t, fcs.tsc.add(ts))

 		if hasMsgs {
@@ -187,11 +206,19 @@ func (fcs *fakeCS) advance(rev, app int, msgs map[int]cid.Cid, nulls ...int) { /
 		apps = append(apps, ts)
 	}

+	fcs.sync.Lock()
+
 	fcs.sub(revs, apps)
-	time.Sleep(100 * time.Millisecond) // TODO: :c
+
+	fcs.sync.Lock()
+	fcs.sync.Unlock() //nolint:staticcheck
 }

-var _ eventApi = &fakeCS{}
+func (fcs *fakeCS) notifDone() {
+	fcs.sync.Unlock()
+}
+
+var _ eventAPI = &fakeCS{}

 func TestAt(t *testing.T) {
 	fcs := &fakeCS{
@@ -199,14 +226,14 @@ func TestAt(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		require.Equal(t, 5, int(ts.Height()))
 		require.Equal(t, 8, int(curH))
 		applied = true
@@ -264,14 +291,14 @@ func TestAtDoubleTrigger(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		require.Equal(t, 5, int(ts.Height()))
 		require.Equal(t, 8, int(curH))
 		applied = true
@@ -306,15 +333,15 @@ func TestAtNullTrigger(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
-		require.Equal(t, uint64(6), ts.Height())
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
+		require.Equal(t, abi.ChainEpoch(6), ts.Height())
 		require.Equal(t, 8, int(curH))
 		applied = true
 		return nil
@@ -340,14 +367,14 @@ func TestAtNullConf(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		require.Equal(t, 5, int(ts.Height()))
 		require.Equal(t, 8, int(curH))
 		applied = true
@@ -379,7 +406,7 @@ func TestAtStart(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -388,7 +415,7 @@ func TestAtStart(t *testing.T) {
 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		require.Equal(t, 5, int(ts.Height()))
 		require.Equal(t, 8, int(curH))
 		applied = true
@@ -413,7 +440,7 @@ func TestAtStartConfidence(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -422,7 +449,7 @@ func TestAtStartConfidence(t *testing.T) {
 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		require.Equal(t, 5, int(ts.Height()))
 		require.Equal(t, 11, int(curH))
 		applied = true
@@ -443,15 +470,15 @@ func TestAtChained(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
-		return events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
+		return events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 			require.Equal(t, 10, int(ts.Height()))
 			applied = true
 			return nil
@@ -477,7 +504,7 @@ func TestAtChainedConfidence(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -486,8 +513,8 @@ func TestAtChainedConfidence(t *testing.T) {
 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
-		return events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
+		return events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 			require.Equal(t, 10, int(ts.Height()))
 			applied = true
 			return nil
@@ -511,7 +538,7 @@ func TestAtChainedConfidenceNull(t *testing.T) {
 		h:   1,
 		tsc: newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -520,7 +547,7 @@ func TestAtChainedConfidenceNull(t *testing.T) {
 	var applied bool
 	var reverted bool

-	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH uint64) error {
+	err := events.ChainAt(func(_ context.Context, ts *types.TipSet, curH abi.ChainEpoch) error {
 		applied = true
 		require.Equal(t, 6, int(ts.Height()))
 		return nil
@@ -534,7 +561,7 @@ func TestAtChainedConfidenceNull(t *testing.T) {
 	require.Equal(t, false, reverted)
 }

-func matchAddrMethod(to address.Address, m uint64) func(msg *types.Message) (bool, error) {
+func matchAddrMethod(to address.Address, m abi.MethodNum) func(msg *types.Message) (bool, error) {
 	return func(msg *types.Message) (bool, error) {
 		return to == msg.To && m == msg.Method, nil
 	}
@@ -549,7 +576,7 @@ func TestCalled(t *testing.T) {
 		blkMsgs: map[cid.Cid]cid.Cid{},
 		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -560,11 +587,11 @@ func TestCalled(t *testing.T) {
 	var applied, reverted bool
 	var appliedMsg *types.Message
 	var appliedTs *types.TipSet
-	var appliedH uint64
+	var appliedH abi.ChainEpoch

 	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
 		return false, true, nil
-	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH uint64) (bool, error) {
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
 		require.Equal(t, false, applied)
 		applied = true
 		appliedMsg = msg
@@ -610,12 +637,12 @@ func TestCalled(t *testing.T) {
 	require.Equal(t, false, applied)
 	require.Equal(t, false, reverted)

-	require.Equal(t, uint64(7), appliedTs.Height())
+	require.Equal(t, abi.ChainEpoch(7), appliedTs.Height())
 	require.Equal(t, "bafkqaaa", appliedTs.Blocks()[0].Messages.String())
-	require.Equal(t, uint64(10), appliedH)
+	require.Equal(t, abi.ChainEpoch(10), appliedH)
 	require.Equal(t, t0123, appliedMsg.To)
 	require.Equal(t, uint64(1), appliedMsg.Nonce)
-	require.Equal(t, uint64(5), appliedMsg.Method)
+	require.Equal(t, abi.MethodNum(5), appliedMsg.Method)

 	// revert some blocks, keep the message

@@ -625,7 +652,7 @@ func TestCalled(t *testing.T) {

 	// revert the message

-	fcs.advance(2, 1, nil) // H=7, we reverted ts with the msg
+	fcs.advance(2, 1, nil) // H=7, we reverted ts with the msg execution, but not the msg itself

 	require.Equal(t, false, applied)
 	require.Equal(t, true, reverted)
@@ -639,24 +666,31 @@ func TestCalled(t *testing.T) {
 		},
 	})

-	fcs.advance(0, 5, map[int]cid.Cid{ // (confidence=3)
+	fcs.advance(0, 3, map[int]cid.Cid{ // (n2msg confidence=1)
 		0: n2msg,
 	})

+	require.Equal(t, true, applied) // msg from H=7, which had reverted execution
+	require.Equal(t, false, reverted)
+	require.Equal(t, abi.ChainEpoch(10), appliedH)
+	applied = false
+
+	fcs.advance(0, 2, nil) // (confidence=3)
+
 	require.Equal(t, true, applied)
 	require.Equal(t, false, reverted)
 	applied = false

-	require.Equal(t, uint64(9), appliedTs.Height())
+	require.Equal(t, abi.ChainEpoch(9), appliedTs.Height())
 	require.Equal(t, "bafkqaaa", appliedTs.Blocks()[0].Messages.String())
-	require.Equal(t, uint64(12), appliedH)
+	require.Equal(t, abi.ChainEpoch(12), appliedH)
 	require.Equal(t, t0123, appliedMsg.To)
 	require.Equal(t, uint64(2), appliedMsg.Nonce)
-	require.Equal(t, uint64(5), appliedMsg.Method)
+	require.Equal(t, abi.MethodNum(5), appliedMsg.Method)

 	// revert and apply at different height

-	fcs.advance(4, 6, map[int]cid.Cid{ // (confidence=3)
+	fcs.advance(8, 6, map[int]cid.Cid{ // (confidence=3)
 		1: n2msg,
 	})

@@ -668,12 +702,12 @@ func TestCalled(t *testing.T) {
 	reverted = false
 	applied = false

-	require.Equal(t, uint64(11), appliedTs.Height())
+	require.Equal(t, abi.ChainEpoch(7), appliedTs.Height())
 	require.Equal(t, "bafkqaaa", appliedTs.Blocks()[0].Messages.String())
-	require.Equal(t, uint64(14), appliedH)
+	require.Equal(t, abi.ChainEpoch(10), appliedH)
 	require.Equal(t, t0123, appliedMsg.To)
 	require.Equal(t, uint64(2), appliedMsg.Nonce)
-	require.Equal(t, uint64(5), appliedMsg.Method)
+	require.Equal(t, abi.MethodNum(5), appliedMsg.Method)

 	// call method again

@@ -694,7 +728,7 @@ func TestCalled(t *testing.T) {
 		}),
 	})

-	fcs.advance(1, 4, nil) // H=19, but message reverted
+	fcs.advance(2, 5, nil) // H=19, but message reverted

 	require.Equal(t, false, applied)
 	require.Equal(t, false, reverted)
@@ -754,7 +788,7 @@ func TestCalledTimeout(t *testing.T) {
 		blkMsgs: map[cid.Cid]cid.Cid{},
 		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -765,11 +799,11 @@ func TestCalledTimeout(t *testing.T) {

 	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
 		return false, true, nil
-	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH uint64) (bool, error) {
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
 		called = true
 		require.Nil(t, msg)
-		require.Equal(t, uint64(20), ts.Height())
-		require.Equal(t, uint64(23), curH)
+		require.Equal(t, abi.ChainEpoch(20), ts.Height())
+		require.Equal(t, abi.ChainEpoch(23), curH)
 		return false, nil
 	}, func(_ context.Context, ts *types.TipSet) error {
 		t.Fatal("revert on timeout")
@@ -794,17 +828,17 @@ func TestCalledTimeout(t *testing.T) {
 		blkMsgs: map[cid.Cid]cid.Cid{},
 		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events = NewEvents(context.Background(), fcs)

 	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
 		return true, true, nil
-	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH uint64) (bool, error) {
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
 		called = true
 		require.Nil(t, msg)
-		require.Equal(t, uint64(20), ts.Height())
-		require.Equal(t, uint64(23), curH)
+		require.Equal(t, abi.ChainEpoch(20), ts.Height())
+		require.Equal(t, abi.ChainEpoch(23), curH)
 		return false, nil
 	}, func(_ context.Context, ts *types.TipSet) error {
 		t.Fatal("revert on timeout")
@@ -828,7 +862,7 @@ func TestCalledOrder(t *testing.T) {
 		blkMsgs: map[cid.Cid]cid.Cid{},
 		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
 	}
-	require.NoError(t, fcs.tsc.add(makeTs(t, 1, dummyCid)))
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))

 	events := NewEvents(context.Background(), fcs)

@@ -839,14 +873,14 @@ func TestCalledOrder(t *testing.T) {

 	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
 		return false, true, nil
-	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH uint64) (bool, error) {
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
 		switch at {
 		case 0:
 			require.Equal(t, uint64(1), msg.Nonce)
-			require.Equal(t, uint64(4), ts.Height())
+			require.Equal(t, abi.ChainEpoch(4), ts.Height())
 		case 1:
 			require.Equal(t, uint64(2), msg.Nonce)
-			require.Equal(t, uint64(5), ts.Height())
+			require.Equal(t, abi.ChainEpoch(5), ts.Height())
 		default:
 			t.Fatal("apply should only get called twice, at: ", at)
 		}
@@ -855,9 +889,9 @@ func TestCalledOrder(t *testing.T) {
 	}, func(_ context.Context, ts *types.TipSet) error {
 		switch at {
 		case 2:
-			require.Equal(t, uint64(5), ts.Height())
+			require.Equal(t, abi.ChainEpoch(5), ts.Height())
 		case 3:
-			require.Equal(t, uint64(4), ts.Height())
+			require.Equal(t, abi.ChainEpoch(4), ts.Height())
 		default:
 			t.Fatal("revert should only get called twice, at: ", at)
 		}
@@ -881,3 +915,400 @@ func TestCalledOrder(t *testing.T) {

 	fcs.advance(9, 1, nil)
 }
+
+func TestCalledNull(t *testing.T) {
+	fcs := &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events := NewEvents(context.Background(), fcs)
+
+	t0123, err := address.NewFromString("t0123")
+	require.NoError(t, err)
+
+	more := true
+	var applied, reverted bool
+
+	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return false, true, nil
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
+		require.Equal(t, false, applied)
+		applied = true
+		return more, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		reverted = true
+		return nil
+	}, 3, 20, matchAddrMethod(t0123, 5))
+	require.NoError(t, err)
+
+	// create few blocks to make sure nothing get's randomly called
+
+	fcs.advance(0, 4, nil) // H=5
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create blocks with message (but below confidence threshold)
+
+	fcs.advance(0, 3, map[int]cid.Cid{ // msg at H=6; H=8 (confidence=2)
+		0: fcs.fakeMsgs(fakeMsg{
+			bmsgs: []*types.Message{
+				{To: t0123, From: t0123, Method: 5, Nonce: 1},
+			},
+		}),
+	})
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create additional blocks so we are above confidence threshold, but with null tipset at the height
+	// of application
+
+	fcs.advance(0, 3, nil, 10) // H=11 (confidence=3, apply)
+
+	require.Equal(t, true, applied)
+	require.Equal(t, false, reverted)
+	applied = false
+
+	fcs.advance(5, 1, nil, 10)
+
+	require.Equal(t, false, applied)
+	require.Equal(t, true, reverted)
+}
+
+func TestRemoveTriggersOnMessage(t *testing.T) {
+	fcs := &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events := NewEvents(context.Background(), fcs)
+
+	t0123, err := address.NewFromString("t0123")
+	require.NoError(t, err)
+
+	more := true
+	var applied, reverted bool
+
+	err = events.Called(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return false, true, nil
+	}, func(msg *types.Message, rec *types.MessageReceipt, ts *types.TipSet, curH abi.ChainEpoch) (bool, error) {
+		require.Equal(t, false, applied)
+		applied = true
+		return more, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		reverted = true
+		return nil
+	}, 3, 20, matchAddrMethod(t0123, 5))
+	require.NoError(t, err)
+
+	// create few blocks to make sure nothing get's randomly called
+
+	fcs.advance(0, 4, nil) // H=5
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create blocks with message (but below confidence threshold)
+
+	fcs.advance(0, 3, map[int]cid.Cid{ // msg occurs at H=5, applied at H=6; H=8 (confidence=2)
+		0: fcs.fakeMsgs(fakeMsg{
+			bmsgs: []*types.Message{
+				{To: t0123, From: t0123, Method: 5, Nonce: 1},
+			},
+		}),
+	})
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// revert applied TS & message TS
+	fcs.advance(3, 1, nil) // H=6 (tipset message applied in reverted, AND message reverted)
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create additional blocks so we are above confidence threshold, but message not applied
+	// as it was reverted
+	fcs.advance(0, 5, nil) // H=11 (confidence=3, apply)
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create blocks with message again (but below confidence threshold)
+
+	fcs.advance(0, 3, map[int]cid.Cid{ // msg occurs at H=12, applied at H=13; H=15 (confidence=2)
+		0: fcs.fakeMsgs(fakeMsg{
+			bmsgs: []*types.Message{
+				{To: t0123, From: t0123, Method: 5, Nonce: 2},
+			},
+		}),
+	})
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// revert applied height TS, but don't remove message trigger
+	fcs.advance(2, 1, nil) // H=13 (tipset message applied in reverted, by tipset with message not reverted)
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create additional blocks so we are above confidence threshold
+	fcs.advance(0, 4, nil) // H=18 (confidence=3, apply)
+
+	require.Equal(t, true, applied)
+	require.Equal(t, false, reverted)
+}
+
+type testStateChange struct {
+	from string
+	to   string
+}
+
+func TestStateChanged(t *testing.T) {
+	fcs := &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events := NewEvents(context.Background(), fcs)
+
+	more := true
+	var applied, reverted bool
+	var appliedData StateChange
+	var appliedOldTs *types.TipSet
+	var appliedNewTs *types.TipSet
+	var appliedH abi.ChainEpoch
+	var matchData StateChange
+
+	confidence := 3
+	timeout := abi.ChainEpoch(20)
+
+	err := events.StateChanged(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return false, true, nil
+	}, func(oldTs, newTs *types.TipSet, data StateChange, curH abi.ChainEpoch) (bool, error) {
+		require.Equal(t, false, applied)
+		applied = true
+		appliedData = data
+		appliedOldTs = oldTs
+		appliedNewTs = newTs
+		appliedH = curH
+		return more, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		reverted = true
+		return nil
+	}, confidence, timeout, func(oldTs, newTs *types.TipSet) (bool, StateChange, error) {
+		if matchData == nil {
+			return false, matchData, nil
+		}
+
+		d := matchData
+		matchData = nil
+		return true, d, nil
+	})
+	require.NoError(t, err)
+
+	// create few blocks to make sure nothing get's randomly called
+
+	fcs.advance(0, 4, nil) // H=5
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create state change (but below confidence threshold)
+	matchData = testStateChange{from: "a", to: "b"}
+	fcs.advance(0, 3, nil)
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// create additional block so we are above confidence threshold
+
+	fcs.advance(0, 2, nil) // H=10 (confidence=3, apply)
+
+	require.Equal(t, true, applied)
+	require.Equal(t, false, reverted)
+	applied = false
+
+	// dip below confidence (should not apply again)
+	fcs.advance(2, 2, nil) // H=10 (confidence=3, apply)
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// Change happens from 5 -> 6
+	require.Equal(t, abi.ChainEpoch(5), appliedOldTs.Height())
+	require.Equal(t, abi.ChainEpoch(6), appliedNewTs.Height())
+
+	// Actually applied (with confidence) at 9
+	require.Equal(t, abi.ChainEpoch(9), appliedH)
+
+	// Make sure the state change was correctly passed through
+	rcvd := appliedData.(testStateChange)
+	require.Equal(t, "a", rcvd.from)
+	require.Equal(t, "b", rcvd.to)
+}
+
+func TestStateChangedRevert(t *testing.T) {
+	fcs := &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events := NewEvents(context.Background(), fcs)
+
+	more := true
+	var applied, reverted bool
+	var matchData StateChange
+
+	confidence := 1
+	timeout := abi.ChainEpoch(20)
+
+	err := events.StateChanged(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return false, true, nil
+	}, func(oldTs, newTs *types.TipSet, data StateChange, curH abi.ChainEpoch) (bool, error) {
+		require.Equal(t, false, applied)
+		applied = true
+		return more, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		reverted = true
+		return nil
+	}, confidence, timeout, func(oldTs, newTs *types.TipSet) (bool, StateChange, error) {
+		if matchData == nil {
+			return false, matchData, nil
+		}
+
+		d := matchData
+		matchData = nil
+		return true, d, nil
+	})
+	require.NoError(t, err)
+
+	fcs.advance(0, 2, nil) // H=3
+
+	// Make a state change from TS at height 3 to TS at height 4
+	matchData = testStateChange{from: "a", to: "b"}
+	fcs.advance(0, 1, nil) // H=4
+
+	// Haven't yet reached confidence
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// Advance to reach confidence level
+	fcs.advance(0, 1, nil) // H=5
+
+	// Should now have called the handler
+	require.Equal(t, true, applied)
+	require.Equal(t, false, reverted)
+	applied = false
+
+	// Advance 3 more TS
+	fcs.advance(0, 3, nil) // H=8
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// Regress but not so far as to cause a revert
+	fcs.advance(3, 1, nil) // H=6
+
+	require.Equal(t, false, applied)
+	require.Equal(t, false, reverted)
+
+	// Regress back to state where change happened
+	fcs.advance(3, 1, nil) // H=4
+
+	// Expect revert to have happened
+	require.Equal(t, false, applied)
+	require.Equal(t, true, reverted)
+}
+
+func TestStateChangedTimeout(t *testing.T) {
+	fcs := &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events := NewEvents(context.Background(), fcs)
+
+	called := false
+
+	err := events.StateChanged(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return false, true, nil
+	}, func(oldTs, newTs *types.TipSet, data StateChange, curH abi.ChainEpoch) (bool, error) {
+		called = true
+		require.Nil(t, data)
+		require.Equal(t, abi.ChainEpoch(20), newTs.Height())
+		require.Equal(t, abi.ChainEpoch(23), curH)
+		return false, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		t.Fatal("revert on timeout")
+		return nil
+	}, 3, 20, func(oldTs, newTs *types.TipSet) (bool, StateChange, error) {
+		return false, nil, nil
+	})
+
+	require.NoError(t, err)
+
+	fcs.advance(0, 21, nil)
+	require.False(t, called)
+
+	fcs.advance(0, 5, nil)
+	require.True(t, called)
+	called = false
+
+	// with check func reporting done
+
+	fcs = &fakeCS{
+		t: t,
+		h: 1,
+
+		msgs:    map[cid.Cid]fakeMsg{},
+		blkMsgs: map[cid.Cid]cid.Cid{},
+		tsc:     newTSCache(2*build.ForkLengthThreshold, nil),
+	}
+	require.NoError(t, fcs.tsc.add(fcs.makeTs(t, nil, 1, dummyCid)))
+
+	events = NewEvents(context.Background(), fcs)
+
+	err = events.StateChanged(func(ts *types.TipSet) (d bool, m bool, e error) {
+		return true, true, nil
+	}, func(oldTs, newTs *types.TipSet, data StateChange, curH abi.ChainEpoch) (bool, error) {
+		called = true
+		require.Nil(t, data)
+		require.Equal(t, abi.ChainEpoch(20), newTs.Height())
+		require.Equal(t, abi.ChainEpoch(23), curH)
+		return false, nil
+	}, func(_ context.Context, ts *types.TipSet) error {
+		t.Fatal("revert on timeout")
+		return nil
+	}, 3, 20, func(oldTs, newTs *types.TipSet) (bool, StateChange, error) {
+		return false, nil, nil
+	})
+	require.NoError(t, err)
+
+	fcs.advance(0, 21, nil)
+	require.False(t, called)
+
+	fcs.advance(0, 5, nil)
+	require.False(t, called)
+}
@@ -0,0 +1,25 @@
+package state
+
+import (
+	"context"
+
+	"github.com/ipfs/go-cid"
+	cbor "github.com/ipfs/go-ipld-cbor"
+)
+
+type contextStore struct {
+	ctx context.Context
+	cst *cbor.BasicIpldStore
+}
+
+func (cs *contextStore) Context() context.Context {
+	return cs.ctx
+}
+
+func (cs *contextStore) Get(ctx context.Context, c cid.Cid, out interface{}) error {
+	return cs.cst.Get(ctx, c, out)
+}
+
+func (cs *contextStore) Put(ctx context.Context, v interface{}) (cid.Cid, error) {
+	return cs.cst.Put(ctx, v)
+}
@@ -0,0 +1,106 @@
+package state
+
+import (
+	"github.com/filecoin-project/specs-actors/actors/util/adt"
+	typegen "github.com/whyrusleeping/cbor-gen"
+)
+
+// AdtArrayDiff generalizes adt.Array diffing by accepting a Deferred type that can unmarshalled to its corresponding struct
+// in an interface implantation.
+// Add should be called when a new k,v is added to the array
+// Modify should be called when a value is modified in the array
+// Remove should be called when a value is removed from the array
+type AdtArrayDiff interface {
+	Add(key uint64, val *typegen.Deferred) error
+	Modify(key uint64, from, to *typegen.Deferred) error
+	Remove(key uint64, val *typegen.Deferred) error
+}
+
+// TODO Performance can be improved by diffing the underlying IPLD graph, e.g. https://github.com/ipfs/go-merkledag/blob/749fd8717d46b4f34c9ce08253070079c89bc56d/dagutils/diff.go#L104
+// CBOR Marshaling will likely be the largest performance bottleneck here.
+
+// DiffAdtArray accepts two *adt.Array's and an AdtArrayDiff implementation. It does the following:
+// - All values that exist in preArr and not in curArr are passed to AdtArrayDiff.Remove()
+// - All values that exist in curArr nnd not in prevArr are passed to adtArrayDiff.Add()
+// - All values that exist in preArr and in curArr are passed to AdtArrayDiff.Modify()
+//  - It is the responsibility of AdtArrayDiff.Modify() to determine if the values it was passed have been modified.
+func DiffAdtArray(preArr, curArr *adt.Array, out AdtArrayDiff) error {
+	prevVal := new(typegen.Deferred)
+	if err := preArr.ForEach(prevVal, func(i int64) error {
+		curVal := new(typegen.Deferred)
+		found, err := curArr.Get(uint64(i), curVal)
+		if err != nil {
+			return err
+		}
+		if !found {
+			if err := out.Remove(uint64(i), prevVal); err != nil {
+				return err
+			}
+			return nil
+		}
+
+		if err := out.Modify(uint64(i), prevVal, curVal); err != nil {
+			return err
+		}
+
+		return curArr.Delete(uint64(i))
+	}); err != nil {
+		return err
+	}
+
+	curVal := new(typegen.Deferred)
+	return curArr.ForEach(curVal, func(i int64) error {
+		return out.Add(uint64(i), curVal)
+	})
+}
+
+// TODO Performance can be improved by diffing the underlying IPLD graph, e.g. https://github.com/ipfs/go-merkledag/blob/749fd8717d46b4f34c9ce08253070079c89bc56d/dagutils/diff.go#L104
+// CBOR Marshaling will likely be the largest performance bottleneck here.
+
+// AdtMapDiff generalizes adt.Map diffing by accepting a Deferred type that can unmarshalled to its corresponding struct
+// in an interface implantation.
+// AsKey should return the Keyer implementation specific to the map
+// Add should be called when a new k,v is added to the map
+// Modify should be called when a value is modified in the map
+// Remove should be called when a value is removed from the map
+type AdtMapDiff interface {
+	AsKey(key string) (adt.Keyer, error)
+	Add(key string, val *typegen.Deferred) error
+	Modify(key string, from, to *typegen.Deferred) error
+	Remove(key string, val *typegen.Deferred) error
+}
+
+func DiffAdtMap(preMap, curMap *adt.Map, out AdtMapDiff) error {
+	prevVal := new(typegen.Deferred)
+	if err := preMap.ForEach(prevVal, func(key string) error {
+		curVal := new(typegen.Deferred)
+		k, err := out.AsKey(key)
+		if err != nil {
+			return err
+		}
+
+		found, err := curMap.Get(k, curVal)
+		if err != nil {
+			return err
+		}
+		if !found {
+			if err := out.Remove(key, prevVal); err != nil {
+				return err
+			}
+			return nil
+		}
+
+		if err := out.Modify(key, prevVal, curVal); err != nil {
+			return err
+		}
+
+		return curMap.Delete(k)
+	}); err != nil {
+		return err
+	}
+
+	curVal := new(typegen.Deferred)
+	return curMap.ForEach(curVal, func(key string) error {
+		return out.Add(key, curVal)
+	})
+}
@@ -0,0 +1,155 @@
+package state
+
+import (
+	"bytes"
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	ds "github.com/ipfs/go-datastore"
+	ds_sync "github.com/ipfs/go-datastore/sync"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbornode "github.com/ipfs/go-ipld-cbor"
+	typegen "github.com/whyrusleeping/cbor-gen"
+
+	"github.com/filecoin-project/specs-actors/actors/runtime"
+	"github.com/filecoin-project/specs-actors/actors/util/adt"
+)
+
+func TestDiffAdtArray(t *testing.T) {
+	ctxstoreA := newContextStore()
+	ctxstoreB := newContextStore()
+
+	arrA := adt.MakeEmptyArray(ctxstoreA)
+	arrB := adt.MakeEmptyArray(ctxstoreB)
+
+	require.NoError(t, arrA.Set(0, runtime.CBORBytes([]byte{0}))) // delete
+
+	require.NoError(t, arrA.Set(1, runtime.CBORBytes([]byte{0}))) // modify
+	require.NoError(t, arrB.Set(1, runtime.CBORBytes([]byte{1})))
+
+	require.NoError(t, arrA.Set(2, runtime.CBORBytes([]byte{1}))) // delete
+
+	require.NoError(t, arrA.Set(3, runtime.CBORBytes([]byte{0}))) // noop
+	require.NoError(t, arrB.Set(3, runtime.CBORBytes([]byte{0})))
+
+	require.NoError(t, arrA.Set(4, runtime.CBORBytes([]byte{0}))) // modify
+	require.NoError(t, arrB.Set(4, runtime.CBORBytes([]byte{6})))
+
+	require.NoError(t, arrB.Set(5, runtime.CBORBytes{8})) // add
+	require.NoError(t, arrB.Set(6, runtime.CBORBytes{9})) // add
+
+	changes := new(TestAdtDiff)
+
+	assert.NoError(t, DiffAdtArray(arrA, arrB, changes))
+	assert.NotNil(t, changes)
+
+	assert.Equal(t, 2, len(changes.Added))
+	// keys 5 and 6 were added
+	assert.EqualValues(t, uint64(5), changes.Added[0].key)
+	assert.EqualValues(t, []byte{8}, changes.Added[0].val)
+	assert.EqualValues(t, uint64(6), changes.Added[1].key)
+	assert.EqualValues(t, []byte{9}, changes.Added[1].val)
+
+	assert.Equal(t, 2, len(changes.Modified))
+	// keys 1 and 4 were modified
+	assert.EqualValues(t, uint64(1), changes.Modified[0].From.key)
+	assert.EqualValues(t, []byte{0}, changes.Modified[0].From.val)
+	assert.EqualValues(t, uint64(1), changes.Modified[0].To.key)
+	assert.EqualValues(t, []byte{1}, changes.Modified[0].To.val)
+	assert.EqualValues(t, uint64(4), changes.Modified[1].From.key)
+	assert.EqualValues(t, []byte{0}, changes.Modified[1].From.val)
+	assert.EqualValues(t, uint64(4), changes.Modified[1].To.key)
+	assert.EqualValues(t, []byte{6}, changes.Modified[1].To.val)
+
+	assert.Equal(t, 2, len(changes.Removed))
+	// keys 0 and 2 were deleted
+	assert.EqualValues(t, uint64(0), changes.Removed[0].key)
+	assert.EqualValues(t, []byte{0}, changes.Removed[0].val)
+	assert.EqualValues(t, uint64(2), changes.Removed[1].key)
+	assert.EqualValues(t, []byte{1}, changes.Removed[1].val)
+}
+
+type adtDiffResult struct {
+	key uint64
+	val runtime.CBORBytes
+}
+
+type TestAdtDiff struct {
+	Added    []adtDiffResult
+	Modified []TestAdtDiffModified
+	Removed  []adtDiffResult
+}
+
+var _ AdtArrayDiff = &TestAdtDiff{}
+
+type TestAdtDiffModified struct {
+	From adtDiffResult
+	To   adtDiffResult
+}
+
+func (t *TestAdtDiff) Add(key uint64, val *typegen.Deferred) error {
+	v := new(runtime.CBORBytes)
+	err := v.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	t.Added = append(t.Added, adtDiffResult{
+		key: key,
+		val: *v,
+	})
+	return nil
+}
+
+func (t *TestAdtDiff) Modify(key uint64, from, to *typegen.Deferred) error {
+	vFrom := new(runtime.CBORBytes)
+	err := vFrom.UnmarshalCBOR(bytes.NewReader(from.Raw))
+	if err != nil {
+		return err
+	}
+
+	vTo := new(runtime.CBORBytes)
+	err = vTo.UnmarshalCBOR(bytes.NewReader(to.Raw))
+	if err != nil {
+		return err
+	}
+
+	if !bytes.Equal(*vFrom, *vTo) {
+		t.Modified = append(t.Modified, TestAdtDiffModified{
+			From: adtDiffResult{
+				key: key,
+				val: *vFrom,
+			},
+			To: adtDiffResult{
+				key: key,
+				val: *vTo,
+			},
+		})
+	}
+	return nil
+}
+
+func (t *TestAdtDiff) Remove(key uint64, val *typegen.Deferred) error {
+	v := new(runtime.CBORBytes)
+	err := v.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	t.Removed = append(t.Removed, adtDiffResult{
+		key: key,
+		val: *v,
+	})
+	return nil
+}
+
+func newContextStore() *contextStore {
+	ctx := context.Background()
+	bs := bstore.NewBlockstore(ds_sync.MutexWrap(ds.NewMapDatastore()))
+	store := cbornode.NewCborStore(bs)
+	return &contextStore{
+		ctx: ctx,
+		cst: store,
+	}
+}
@@ -0,0 +1,490 @@
+package state
+
+import (
+	"bytes"
+	"context"
+	"github.com/filecoin-project/go-address"
+	"github.com/ipfs/go-cid"
+	cbor "github.com/ipfs/go-ipld-cbor"
+	typegen "github.com/whyrusleeping/cbor-gen"
+
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/market"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/util/adt"
+
+	"github.com/filecoin-project/lotus/api/apibstore"
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+// UserData is the data returned from the DiffTipSetKeyFunc
+type UserData interface{}
+
+// ChainAPI abstracts out calls made by this class to external APIs
+type ChainAPI interface {
+	apibstore.ChainIO
+	StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error)
+}
+
+// StatePredicates has common predicates for responding to state changes
+type StatePredicates struct {
+	api ChainAPI
+	cst *cbor.BasicIpldStore
+}
+
+func NewStatePredicates(api ChainAPI) *StatePredicates {
+	return &StatePredicates{
+		api: api,
+		cst: cbor.NewCborStore(apibstore.NewAPIBlockstore(api)),
+	}
+}
+
+// DiffTipSetKeyFunc check if there's a change form oldState to newState, and returns
+// - changed: was there a change
+// - user: user-defined data representing the state change
+// - err
+type DiffTipSetKeyFunc func(ctx context.Context, oldState, newState types.TipSetKey) (changed bool, user UserData, err error)
+
+type DiffActorStateFunc func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error)
+
+// OnActorStateChanged calls diffStateFunc when the state changes for the given actor
+func (sp *StatePredicates) OnActorStateChanged(addr address.Address, diffStateFunc DiffActorStateFunc) DiffTipSetKeyFunc {
+	return func(ctx context.Context, oldState, newState types.TipSetKey) (changed bool, user UserData, err error) {
+		oldActor, err := sp.api.StateGetActor(ctx, addr, oldState)
+		if err != nil {
+			return false, nil, err
+		}
+		newActor, err := sp.api.StateGetActor(ctx, addr, newState)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if oldActor.Head.Equals(newActor.Head) {
+			return false, nil, nil
+		}
+		return diffStateFunc(ctx, oldActor.Head, newActor.Head)
+	}
+}
+
+type DiffStorageMarketStateFunc func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error)
+
+// OnStorageMarketActorChanged calls diffStorageMarketState when the state changes for the market actor
+func (sp *StatePredicates) OnStorageMarketActorChanged(diffStorageMarketState DiffStorageMarketStateFunc) DiffTipSetKeyFunc {
+	return sp.OnActorStateChanged(builtin.StorageMarketActorAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
+		var oldState market.State
+		if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
+			return false, nil, err
+		}
+		var newState market.State
+		if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
+			return false, nil, err
+		}
+		return diffStorageMarketState(ctx, &oldState, &newState)
+	})
+}
+
+type DiffAdtArraysFunc func(ctx context.Context, oldDealStateRoot, newDealStateRoot *adt.Array) (changed bool, user UserData, err error)
+
+// OnDealStateChanged calls diffDealStates when the market deal state changes
+func (sp *StatePredicates) OnDealStateChanged(diffDealStates DiffAdtArraysFunc) DiffStorageMarketStateFunc {
+	return func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error) {
+		if oldState.States.Equals(newState.States) {
+			return false, nil, nil
+		}
+
+		ctxStore := &contextStore{
+			ctx: ctx,
+			cst: sp.cst,
+		}
+
+		oldRoot, err := adt.AsArray(ctxStore, oldState.States)
+		if err != nil {
+			return false, nil, err
+		}
+		newRoot, err := adt.AsArray(ctxStore, newState.States)
+		if err != nil {
+			return false, nil, err
+		}
+
+		return diffDealStates(ctx, oldRoot, newRoot)
+	}
+}
+
+// OnDealProposalChanged calls diffDealProps when the market proposal state changes
+func (sp *StatePredicates) OnDealProposalChanged(diffDealProps DiffAdtArraysFunc) DiffStorageMarketStateFunc {
+	return func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error) {
+		if oldState.Proposals.Equals(newState.Proposals) {
+			return false, nil, nil
+		}
+
+		ctxStore := &contextStore{
+			ctx: ctx,
+			cst: sp.cst,
+		}
+
+		oldRoot, err := adt.AsArray(ctxStore, oldState.Proposals)
+		if err != nil {
+			return false, nil, err
+		}
+		newRoot, err := adt.AsArray(ctxStore, newState.Proposals)
+		if err != nil {
+			return false, nil, err
+		}
+
+		return diffDealProps(ctx, oldRoot, newRoot)
+	}
+}
+
+var _ AdtArrayDiff = &MarketDealProposalChanges{}
+
+type MarketDealProposalChanges struct {
+	Added   []ProposalIDState
+	Removed []ProposalIDState
+}
+
+type ProposalIDState struct {
+	ID       abi.DealID
+	Proposal market.DealProposal
+}
+
+func (m *MarketDealProposalChanges) Add(key uint64, val *typegen.Deferred) error {
+	dp := new(market.DealProposal)
+	err := dp.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Added = append(m.Added, ProposalIDState{abi.DealID(key), *dp})
+	return nil
+}
+
+func (m *MarketDealProposalChanges) Modify(key uint64, from, to *typegen.Deferred) error {
+	// short circuit, DealProposals are static
+	return nil
+}
+
+func (m *MarketDealProposalChanges) Remove(key uint64, val *typegen.Deferred) error {
+	dp := new(market.DealProposal)
+	err := dp.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Removed = append(m.Removed, ProposalIDState{abi.DealID(key), *dp})
+	return nil
+}
+
+// OnDealProposalAmtChanged detects changes in the deal proposal AMT for all deal proposals and returns a MarketProposalsChanges structure containing:
+// - Added Proposals
+// - Modified Proposals
+// - Removed Proposals
+func (sp *StatePredicates) OnDealProposalAmtChanged() DiffAdtArraysFunc {
+	return func(ctx context.Context, oldDealProps, newDealProps *adt.Array) (changed bool, user UserData, err error) {
+		proposalChanges := new(MarketDealProposalChanges)
+		if err := DiffAdtArray(oldDealProps, newDealProps, proposalChanges); err != nil {
+			return false, nil, err
+		}
+
+		if len(proposalChanges.Added)+len(proposalChanges.Removed) == 0 {
+			return false, nil, nil
+		}
+
+		return true, proposalChanges, nil
+	}
+}
+
+var _ AdtArrayDiff = &MarketDealStateChanges{}
+
+type MarketDealStateChanges struct {
+	Added    []DealIDState
+	Modified []DealStateChange
+	Removed  []DealIDState
+}
+
+type DealIDState struct {
+	ID   abi.DealID
+	Deal market.DealState
+}
+
+func (m *MarketDealStateChanges) Add(key uint64, val *typegen.Deferred) error {
+	ds := new(market.DealState)
+	err := ds.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Added = append(m.Added, DealIDState{abi.DealID(key), *ds})
+	return nil
+}
+
+func (m *MarketDealStateChanges) Modify(key uint64, from, to *typegen.Deferred) error {
+	dsFrom := new(market.DealState)
+	if err := dsFrom.UnmarshalCBOR(bytes.NewReader(from.Raw)); err != nil {
+		return err
+	}
+
+	dsTo := new(market.DealState)
+	if err := dsTo.UnmarshalCBOR(bytes.NewReader(to.Raw)); err != nil {
+		return err
+	}
+
+	if *dsFrom != *dsTo {
+		m.Modified = append(m.Modified, DealStateChange{abi.DealID(key), dsFrom, dsTo})
+	}
+	return nil
+}
+
+func (m *MarketDealStateChanges) Remove(key uint64, val *typegen.Deferred) error {
+	ds := new(market.DealState)
+	err := ds.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Removed = append(m.Removed, DealIDState{abi.DealID(key), *ds})
+	return nil
+}
+
+// OnDealStateAmtChanged detects changes in the deal state AMT for all deal states and returns a MarketDealStateChanges structure containing:
+// - Added Deals
+// - Modified Deals
+// - Removed Deals
+func (sp *StatePredicates) OnDealStateAmtChanged() DiffAdtArraysFunc {
+	return func(ctx context.Context, oldDealStates, newDealStates *adt.Array) (changed bool, user UserData, err error) {
+		dealStateChanges := new(MarketDealStateChanges)
+		if err := DiffAdtArray(oldDealStates, newDealStates, dealStateChanges); err != nil {
+			return false, nil, err
+		}
+
+		if len(dealStateChanges.Added)+len(dealStateChanges.Modified)+len(dealStateChanges.Removed) == 0 {
+			return false, nil, nil
+		}
+
+		return true, dealStateChanges, nil
+	}
+}
+
+// ChangedDeals is a set of changes to deal state
+type ChangedDeals map[abi.DealID]DealStateChange
+
+// DealStateChange is a change in deal state from -> to
+type DealStateChange struct {
+	ID   abi.DealID
+	From *market.DealState
+	To   *market.DealState
+}
+
+// DealStateChangedForIDs detects changes in the deal state AMT for the given deal IDs
+func (sp *StatePredicates) DealStateChangedForIDs(dealIds []abi.DealID) DiffAdtArraysFunc {
+	return func(ctx context.Context, oldDealStateArray, newDealStateArray *adt.Array) (changed bool, user UserData, err error) {
+		changedDeals := make(ChangedDeals)
+		for _, dealID := range dealIds {
+			var oldDealPtr, newDealPtr *market.DealState
+			var oldDeal, newDeal market.DealState
+
+			_, err := oldDealStateArray.Get(uint64(dealID), &oldDeal)
+			if err != nil {
+				return false, nil, err
+			}
+			oldDealPtr = &oldDeal
+
+			_, err = newDealStateArray.Get(uint64(dealID), &newDeal)
+			if err != nil {
+				return false, nil, err
+			}
+			newDealPtr = &newDeal
+
+			if oldDeal != newDeal {
+				changedDeals[dealID] = DealStateChange{dealID, oldDealPtr, newDealPtr}
+			}
+		}
+		if len(changedDeals) > 0 {
+			return true, changedDeals, nil
+		}
+		return false, nil, nil
+	}
+}
+
+type DiffMinerActorStateFunc func(ctx context.Context, oldState *miner.State, newState *miner.State) (changed bool, user UserData, err error)
+
+func (sp *StatePredicates) OnMinerActorChange(minerAddr address.Address, diffMinerActorState DiffMinerActorStateFunc) DiffTipSetKeyFunc {
+	return sp.OnActorStateChanged(minerAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
+		var oldState miner.State
+		if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
+			return false, nil, err
+		}
+		var newState miner.State
+		if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
+			return false, nil, err
+		}
+		return diffMinerActorState(ctx, &oldState, &newState)
+	})
+}
+
+type MinerSectorChanges struct {
+	Added    []miner.SectorOnChainInfo
+	Extended []SectorExtensions
+	Removed  []miner.SectorOnChainInfo
+}
+
+var _ AdtArrayDiff = &MinerSectorChanges{}
+
+type SectorExtensions struct {
+	From miner.SectorOnChainInfo
+	To   miner.SectorOnChainInfo
+}
+
+func (m *MinerSectorChanges) Add(key uint64, val *typegen.Deferred) error {
+	si := new(miner.SectorOnChainInfo)
+	err := si.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Added = append(m.Added, *si)
+	return nil
+}
+
+func (m *MinerSectorChanges) Modify(key uint64, from, to *typegen.Deferred) error {
+	siFrom := new(miner.SectorOnChainInfo)
+	err := siFrom.UnmarshalCBOR(bytes.NewReader(from.Raw))
+	if err != nil {
+		return err
+	}
+
+	siTo := new(miner.SectorOnChainInfo)
+	err = siTo.UnmarshalCBOR(bytes.NewReader(to.Raw))
+	if err != nil {
+		return err
+	}
+
+	if siFrom.Info.Expiration != siTo.Info.Expiration {
+		m.Extended = append(m.Extended, SectorExtensions{
+			From: *siFrom,
+			To:   *siTo,
+		})
+	}
+	return nil
+}
+
+func (m *MinerSectorChanges) Remove(key uint64, val *typegen.Deferred) error {
+	si := new(miner.SectorOnChainInfo)
+	err := si.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Removed = append(m.Removed, *si)
+	return nil
+}
+
+func (sp *StatePredicates) OnMinerSectorChange() DiffMinerActorStateFunc {
+	return func(ctx context.Context, oldState, newState *miner.State) (changed bool, user UserData, err error) {
+		ctxStore := &contextStore{
+			ctx: ctx,
+			cst: sp.cst,
+		}
+
+		sectorChanges := &MinerSectorChanges{
+			Added:    []miner.SectorOnChainInfo{},
+			Extended: []SectorExtensions{},
+			Removed:  []miner.SectorOnChainInfo{},
+		}
+
+		// no sector changes
+		if oldState.Sectors.Equals(newState.Sectors) {
+			return false, nil, nil
+		}
+
+		oldSectors, err := adt.AsArray(ctxStore, oldState.Sectors)
+		if err != nil {
+			return false, nil, err
+		}
+
+		newSectors, err := adt.AsArray(ctxStore, newState.Sectors)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if err := DiffAdtArray(oldSectors, newSectors, sectorChanges); err != nil {
+			return false, nil, err
+		}
+
+		// nothing changed
+		if len(sectorChanges.Added)+len(sectorChanges.Extended)+len(sectorChanges.Removed) == 0 {
+			return false, nil, nil
+		}
+
+		return true, sectorChanges, nil
+	}
+}
+
+type MinerPreCommitChanges struct {
+	Added   []miner.SectorPreCommitOnChainInfo
+	Removed []miner.SectorPreCommitOnChainInfo
+}
+
+func (m *MinerPreCommitChanges) AsKey(key string) (adt.Keyer, error) {
+	sector, err := adt.ParseUIntKey(key)
+	if err != nil {
+		return nil, err
+	}
+	return miner.SectorKey(abi.SectorNumber(sector)), nil
+}
+
+func (m *MinerPreCommitChanges) Add(key string, val *typegen.Deferred) error {
+	sp := new(miner.SectorPreCommitOnChainInfo)
+	err := sp.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Added = append(m.Added, *sp)
+	return nil
+}
+
+func (m *MinerPreCommitChanges) Modify(key string, from, to *typegen.Deferred) error {
+	return nil
+}
+
+func (m *MinerPreCommitChanges) Remove(key string, val *typegen.Deferred) error {
+	sp := new(miner.SectorPreCommitOnChainInfo)
+	err := sp.UnmarshalCBOR(bytes.NewReader(val.Raw))
+	if err != nil {
+		return err
+	}
+	m.Removed = append(m.Removed, *sp)
+	return nil
+}
+
+func (sp *StatePredicates) OnMinerPreCommitChange() DiffMinerActorStateFunc {
+	return func(ctx context.Context, oldState, newState *miner.State) (changed bool, user UserData, err error) {
+		ctxStore := &contextStore{
+			ctx: ctx,
+			cst: sp.cst,
+		}
+
+		precommitChanges := &MinerPreCommitChanges{
+			Added:   []miner.SectorPreCommitOnChainInfo{},
+			Removed: []miner.SectorPreCommitOnChainInfo{},
+		}
+
+		if oldState.PreCommittedSectors.Equals(newState.PreCommittedSectors) {
+			return false, nil, nil
+		}
+
+		oldPrecommits, err := adt.AsMap(ctxStore, oldState.PreCommittedSectors)
+		if err != nil {
+			return false, nil, err
+		}
+
+		newPrecommits, err := adt.AsMap(ctxStore, newState.PreCommittedSectors)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if err := DiffAdtMap(oldPrecommits, newPrecommits, precommitChanges); err != nil {
+			return false, nil, err
+		}
+
+		if len(precommitChanges.Added)+len(precommitChanges.Removed) == 0 {
+			return false, nil, nil
+		}
+
+		return true, precommitChanges, nil
+	}
+}
@@ -0,0 +1,483 @@
+package state
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"golang.org/x/xerrors"
+
+	"github.com/ipfs/go-cid"
+	ds "github.com/ipfs/go-datastore"
+	ds_sync "github.com/ipfs/go-datastore/sync"
+	"github.com/ipfs/go-hamt-ipld"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbornode "github.com/ipfs/go-ipld-cbor"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-amt-ipld/v2"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin/market"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+	"github.com/filecoin-project/specs-actors/actors/util/adt"
+	tutils "github.com/filecoin-project/specs-actors/support/testing"
+
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+var dummyCid cid.Cid
+
+func init() {
+	dummyCid, _ = cid.Parse("bafkqaaa")
+}
+
+type mockAPI struct {
+	ts map[types.TipSetKey]*types.Actor
+	bs bstore.Blockstore
+}
+
+func newMockAPI(bs bstore.Blockstore) *mockAPI {
+	return &mockAPI{
+		bs: bs,
+		ts: make(map[types.TipSetKey]*types.Actor),
+	}
+}
+
+func (m mockAPI) ChainHasObj(ctx context.Context, c cid.Cid) (bool, error) {
+	return m.bs.Has(c)
+}
+
+func (m mockAPI) ChainReadObj(ctx context.Context, c cid.Cid) ([]byte, error) {
+	blk, err := m.bs.Get(c)
+	if err != nil {
+		return nil, xerrors.Errorf("blockstore get: %w", err)
+	}
+
+	return blk.RawData(), nil
+}
+
+func (m mockAPI) StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error) {
+	return m.ts[tsk], nil
+}
+
+func (m mockAPI) setActor(tsk types.TipSetKey, act *types.Actor) {
+	m.ts[tsk] = act
+}
+
+func TestMarketPredicates(t *testing.T) {
+	ctx := context.Background()
+	bs := bstore.NewBlockstore(ds_sync.MutexWrap(ds.NewMapDatastore()))
+	store := cbornode.NewCborStore(bs)
+
+	oldDeal1 := &market.DealState{
+		SectorStartEpoch: 1,
+		LastUpdatedEpoch: 2,
+		SlashEpoch:       0,
+	}
+	oldDeal2 := &market.DealState{
+		SectorStartEpoch: 4,
+		LastUpdatedEpoch: 5,
+		SlashEpoch:       0,
+	}
+	oldDeals := map[abi.DealID]*market.DealState{
+		abi.DealID(1): oldDeal1,
+		abi.DealID(2): oldDeal2,
+	}
+
+	oldProp1 := &market.DealProposal{
+		PieceCID:             dummyCid,
+		PieceSize:            0,
+		VerifiedDeal:         false,
+		Client:               tutils.NewIDAddr(t, 1),
+		Provider:             tutils.NewIDAddr(t, 1),
+		StartEpoch:           1,
+		EndEpoch:             2,
+		StoragePricePerEpoch: big.Zero(),
+		ProviderCollateral:   big.Zero(),
+		ClientCollateral:     big.Zero(),
+	}
+	oldProp2 := &market.DealProposal{
+		PieceCID:             dummyCid,
+		PieceSize:            0,
+		VerifiedDeal:         false,
+		Client:               tutils.NewIDAddr(t, 1),
+		Provider:             tutils.NewIDAddr(t, 1),
+		StartEpoch:           2,
+		EndEpoch:             3,
+		StoragePricePerEpoch: big.Zero(),
+		ProviderCollateral:   big.Zero(),
+		ClientCollateral:     big.Zero(),
+	}
+	oldProps := map[abi.DealID]*market.DealProposal{
+		abi.DealID(1): oldProp1,
+		abi.DealID(2): oldProp2,
+	}
+
+	oldStateC := createMarketState(ctx, t, store, oldDeals, oldProps)
+
+	newDeal1 := &market.DealState{
+		SectorStartEpoch: 1,
+		LastUpdatedEpoch: 3,
+		SlashEpoch:       0,
+	}
+	newDeal2 := &market.DealState{
+		SectorStartEpoch: 4,
+		LastUpdatedEpoch: 6,
+		SlashEpoch:       6,
+	}
+	// added
+	newDeal3 := &market.DealState{
+		SectorStartEpoch: 1,
+		LastUpdatedEpoch: 2,
+		SlashEpoch:       3,
+	}
+	newDeals := map[abi.DealID]*market.DealState{
+		abi.DealID(1): newDeal1,
+		abi.DealID(2): newDeal2,
+		abi.DealID(3): newDeal3,
+	}
+
+	// added
+	newProp3 := &market.DealProposal{
+		PieceCID:             dummyCid,
+		PieceSize:            0,
+		VerifiedDeal:         false,
+		Client:               tutils.NewIDAddr(t, 1),
+		Provider:             tutils.NewIDAddr(t, 1),
+		StartEpoch:           4,
+		EndEpoch:             4,
+		StoragePricePerEpoch: big.Zero(),
+		ProviderCollateral:   big.Zero(),
+		ClientCollateral:     big.Zero(),
+	}
+	newProps := map[abi.DealID]*market.DealProposal{
+		abi.DealID(1): oldProp1, // 1 was persisted
+		// prop 2 was removed
+		abi.DealID(3): newProp3, // new
+		// NB: DealProposals cannot be modified, so don't test that case.
+	}
+	newStateC := createMarketState(ctx, t, store, newDeals, newProps)
+
+	minerAddr, err := address.NewFromString("t00")
+	require.NoError(t, err)
+	oldState, err := mockTipset(minerAddr, 1)
+	require.NoError(t, err)
+	newState, err := mockTipset(minerAddr, 2)
+	require.NoError(t, err)
+
+	api := newMockAPI(bs)
+	api.setActor(oldState.Key(), &types.Actor{Head: oldStateC})
+	api.setActor(newState.Key(), &types.Actor{Head: newStateC})
+
+	t.Run("deal ID predicate", func(t *testing.T) {
+		preds := NewStatePredicates(api)
+
+		dealIds := []abi.DealID{abi.DealID(1), abi.DealID(2)}
+		diffIDFn := preds.OnStorageMarketActorChanged(preds.OnDealStateChanged(preds.DealStateChangedForIDs(dealIds)))
+
+		// Diff a state against itself: expect no change
+		changed, _, err := diffIDFn(ctx, oldState.Key(), oldState.Key())
+		require.NoError(t, err)
+		require.False(t, changed)
+
+		// Diff old state against new state
+		changed, valIDs, err := diffIDFn(ctx, oldState.Key(), newState.Key())
+		require.NoError(t, err)
+		require.True(t, changed)
+
+		changedDealIDs, ok := valIDs.(ChangedDeals)
+		require.True(t, ok)
+		require.Len(t, changedDealIDs, 2)
+		require.Contains(t, changedDealIDs, abi.DealID(1))
+		require.Contains(t, changedDealIDs, abi.DealID(2))
+		deal1 := changedDealIDs[abi.DealID(1)]
+		if deal1.From.LastUpdatedEpoch != 2 || deal1.To.LastUpdatedEpoch != 3 {
+			t.Fatal("Unexpected change to LastUpdatedEpoch")
+		}
+		deal2 := changedDealIDs[abi.DealID(2)]
+		if deal2.From.SlashEpoch != 0 || deal2.To.SlashEpoch != 6 {
+			t.Fatal("Unexpected change to SlashEpoch")
+		}
+
+		// Test that OnActorStateChanged does not call the callback if the state has not changed
+		mockAddr, err := address.NewFromString("t01")
+		require.NoError(t, err)
+		actorDiffFn := preds.OnActorStateChanged(mockAddr, func(context.Context, cid.Cid, cid.Cid) (bool, UserData, error) {
+			t.Fatal("No state change so this should not be called")
+			return false, nil, nil
+		})
+		changed, _, err = actorDiffFn(ctx, oldState.Key(), oldState.Key())
+		require.NoError(t, err)
+		require.False(t, changed)
+
+		// Test that OnDealStateChanged does not call the callback if the state has not changed
+		diffDealStateFn := preds.OnDealStateChanged(func(context.Context, *adt.Array, *adt.Array) (bool, UserData, error) {
+			t.Fatal("No state change so this should not be called")
+			return false, nil, nil
+		})
+		marketState := createEmptyMarketState(t, store)
+		changed, _, err = diffDealStateFn(ctx, marketState, marketState)
+		require.NoError(t, err)
+		require.False(t, changed)
+	})
+
+	t.Run("deal state array predicate", func(t *testing.T) {
+		preds := NewStatePredicates(api)
+		diffArrFn := preds.OnStorageMarketActorChanged(preds.OnDealStateChanged(preds.OnDealStateAmtChanged()))
+
+		changed, _, err := diffArrFn(ctx, oldState.Key(), oldState.Key())
+		require.NoError(t, err)
+		require.False(t, changed)
+
+		changed, valArr, err := diffArrFn(ctx, oldState.Key(), newState.Key())
+		require.NoError(t, err)
+		require.True(t, changed)
+
+		changedDeals, ok := valArr.(*MarketDealStateChanges)
+		require.True(t, ok)
+		require.Len(t, changedDeals.Added, 1)
+		require.Equal(t, abi.DealID(3), changedDeals.Added[0].ID)
+		require.Equal(t, *newDeal3, changedDeals.Added[0].Deal)
+
+		require.Len(t, changedDeals.Removed, 0)
+
+		require.Len(t, changedDeals.Modified, 2)
+		require.Equal(t, abi.DealID(1), changedDeals.Modified[0].ID)
+		require.Equal(t, newDeal1, changedDeals.Modified[0].To)
+		require.Equal(t, oldDeal1, changedDeals.Modified[0].From)
+
+		require.Equal(t, abi.DealID(2), changedDeals.Modified[1].ID)
+		require.Equal(t, oldDeal2, changedDeals.Modified[1].From)
+		require.Equal(t, newDeal2, changedDeals.Modified[1].To)
+	})
+
+	t.Run("deal proposal array predicate", func(t *testing.T) {
+		preds := NewStatePredicates(api)
+		diffArrFn := preds.OnStorageMarketActorChanged(preds.OnDealProposalChanged(preds.OnDealProposalAmtChanged()))
+		changed, _, err := diffArrFn(ctx, oldState.Key(), oldState.Key())
+		require.NoError(t, err)
+		require.False(t, changed)
+
+		changed, valArr, err := diffArrFn(ctx, oldState.Key(), newState.Key())
+		require.NoError(t, err)
+		require.True(t, changed)
+
+		changedProps, ok := valArr.(*MarketDealProposalChanges)
+		require.True(t, ok)
+		require.Len(t, changedProps.Added, 1)
+		require.Equal(t, abi.DealID(3), changedProps.Added[0].ID)
+		require.Equal(t, *newProp3, changedProps.Added[0].Proposal)
+
+		// proposals cannot be modified -- no modified testing
+
+		require.Len(t, changedProps.Removed, 1)
+		require.Equal(t, abi.DealID(2), changedProps.Removed[0].ID)
+		require.Equal(t, *oldProp2, changedProps.Removed[0].Proposal)
+	})
+}
+
+func TestMinerSectorChange(t *testing.T) {
+	ctx := context.Background()
+	bs := bstore.NewBlockstore(ds_sync.MutexWrap(ds.NewMapDatastore()))
+	store := cbornode.NewCborStore(bs)
+
+	nextID := uint64(0)
+	nextIDAddrF := func() address.Address {
+		defer func() { nextID++ }()
+		return tutils.NewIDAddr(t, nextID)
+	}
+
+	owner, worker := nextIDAddrF(), nextIDAddrF()
+	si0 := newSectorOnChainInfo(0, tutils.MakeCID("0"), big.NewInt(0), abi.ChainEpoch(0), abi.ChainEpoch(10))
+	si1 := newSectorOnChainInfo(1, tutils.MakeCID("1"), big.NewInt(1), abi.ChainEpoch(1), abi.ChainEpoch(11))
+	si2 := newSectorOnChainInfo(2, tutils.MakeCID("2"), big.NewInt(2), abi.ChainEpoch(2), abi.ChainEpoch(11))
+	oldMinerC := createMinerState(ctx, t, store, owner, worker, []miner.SectorOnChainInfo{si0, si1, si2})
+
+	si3 := newSectorOnChainInfo(3, tutils.MakeCID("3"), big.NewInt(3), abi.ChainEpoch(3), abi.ChainEpoch(12))
+	// 0 delete
+	// 1 extend
+	// 2 same
+	// 3 added
+	si1Ext := si1
+	si1Ext.Info.Expiration++
+	newMinerC := createMinerState(ctx, t, store, owner, worker, []miner.SectorOnChainInfo{si1Ext, si2, si3})
+
+	minerAddr := nextIDAddrF()
+	oldState, err := mockTipset(minerAddr, 1)
+	require.NoError(t, err)
+	newState, err := mockTipset(minerAddr, 2)
+	require.NoError(t, err)
+
+	api := newMockAPI(bs)
+	api.setActor(oldState.Key(), &types.Actor{Head: oldMinerC})
+	api.setActor(newState.Key(), &types.Actor{Head: newMinerC})
+
+	preds := NewStatePredicates(api)
+
+	minerDiffFn := preds.OnMinerActorChange(minerAddr, preds.OnMinerSectorChange())
+	change, val, err := minerDiffFn(ctx, oldState.Key(), newState.Key())
+	require.NoError(t, err)
+	require.True(t, change)
+	require.NotNil(t, val)
+
+	sectorChanges, ok := val.(*MinerSectorChanges)
+	require.True(t, ok)
+
+	require.Equal(t, len(sectorChanges.Added), 1)
+	require.Equal(t, 1, len(sectorChanges.Added))
+	require.Equal(t, si3, sectorChanges.Added[0])
+
+	require.Equal(t, 1, len(sectorChanges.Removed))
+	require.Equal(t, si0, sectorChanges.Removed[0])
+
+	require.Equal(t, 1, len(sectorChanges.Extended))
+	require.Equal(t, si1, sectorChanges.Extended[0].From)
+	require.Equal(t, si1Ext, sectorChanges.Extended[0].To)
+
+	change, val, err = minerDiffFn(ctx, oldState.Key(), oldState.Key())
+	require.NoError(t, err)
+	require.False(t, change)
+	require.Nil(t, val)
+
+	change, val, err = minerDiffFn(ctx, newState.Key(), oldState.Key())
+	require.NoError(t, err)
+	require.True(t, change)
+	require.NotNil(t, val)
+
+	sectorChanges, ok = val.(*MinerSectorChanges)
+	require.True(t, ok)
+
+	require.Equal(t, 1, len(sectorChanges.Added))
+	require.Equal(t, si0, sectorChanges.Added[0])
+
+	require.Equal(t, 1, len(sectorChanges.Removed))
+	require.Equal(t, si3, sectorChanges.Removed[0])
+
+	require.Equal(t, 1, len(sectorChanges.Extended))
+	require.Equal(t, si1, sectorChanges.Extended[0].To)
+	require.Equal(t, si1Ext, sectorChanges.Extended[0].From)
+}
+
+func mockTipset(minerAddr address.Address, timestamp uint64) (*types.TipSet, error) {
+	return types.NewTipSet([]*types.BlockHeader{{
+		Miner:                 minerAddr,
+		Height:                5,
+		ParentStateRoot:       dummyCid,
+		Messages:              dummyCid,
+		ParentMessageReceipts: dummyCid,
+		BlockSig:              &crypto.Signature{Type: crypto.SigTypeBLS},
+		BLSAggregate:          &crypto.Signature{Type: crypto.SigTypeBLS},
+		Timestamp:             timestamp,
+	}})
+}
+
+func createMarketState(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, deals map[abi.DealID]*market.DealState, props map[abi.DealID]*market.DealProposal) cid.Cid {
+	dealRootCid := createDealAMT(ctx, t, store, deals)
+	propRootCid := createProposalAMT(ctx, t, store, props)
+
+	state := createEmptyMarketState(t, store)
+	state.States = dealRootCid
+	state.Proposals = propRootCid
+
+	stateC, err := store.Put(ctx, state)
+	require.NoError(t, err)
+	return stateC
+}
+
+func createEmptyMarketState(t *testing.T, store *cbornode.BasicIpldStore) *market.State {
+	emptyArrayCid, err := amt.NewAMT(store).Flush(context.TODO())
+	require.NoError(t, err)
+	emptyMap, err := store.Put(context.TODO(), hamt.NewNode(store, hamt.UseTreeBitWidth(5)))
+	require.NoError(t, err)
+	return market.ConstructState(emptyArrayCid, emptyMap, emptyMap)
+}
+
+func createDealAMT(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, deals map[abi.DealID]*market.DealState) cid.Cid {
+	root := amt.NewAMT(store)
+	for dealID, dealState := range deals {
+		err := root.Set(ctx, uint64(dealID), dealState)
+		require.NoError(t, err)
+	}
+	rootCid, err := root.Flush(ctx)
+	require.NoError(t, err)
+	return rootCid
+}
+
+func createProposalAMT(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, props map[abi.DealID]*market.DealProposal) cid.Cid {
+	root := amt.NewAMT(store)
+	for dealID, prop := range props {
+		err := root.Set(ctx, uint64(dealID), prop)
+		require.NoError(t, err)
+	}
+	rootCid, err := root.Flush(ctx)
+	require.NoError(t, err)
+	return rootCid
+}
+
+func createMinerState(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, owner, worker address.Address, sectors []miner.SectorOnChainInfo) cid.Cid {
+	rootCid := createSectorsAMT(ctx, t, store, sectors)
+
+	state := createEmptyMinerState(ctx, t, store, owner, worker)
+	state.Sectors = rootCid
+
+	stateC, err := store.Put(ctx, state)
+	require.NoError(t, err)
+	return stateC
+}
+
+func createEmptyMinerState(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, owner, worker address.Address) *miner.State {
+	emptyArrayCid, err := amt.NewAMT(store).Flush(context.TODO())
+	require.NoError(t, err)
+	emptyMap, err := store.Put(context.TODO(), hamt.NewNode(store, hamt.UseTreeBitWidth(5)))
+	require.NoError(t, err)
+
+	emptyDeadlines := miner.ConstructDeadlines()
+	emptyDeadlinesCid, err := store.Put(context.Background(), emptyDeadlines)
+	require.NoError(t, err)
+
+	state, err := miner.ConstructState(emptyArrayCid, emptyMap, emptyDeadlinesCid, owner, worker, abi.PeerID{'1'}, nil, abi.RegisteredSealProof_StackedDrg64GiBV1, 0)
+	require.NoError(t, err)
+	return state
+
+}
+
+func createSectorsAMT(ctx context.Context, t *testing.T, store *cbornode.BasicIpldStore, sectors []miner.SectorOnChainInfo) cid.Cid {
+	root := amt.NewAMT(store)
+	for _, sector := range sectors {
+		sector := sector
+		err := root.Set(ctx, uint64(sector.Info.SectorNumber), &sector)
+		require.NoError(t, err)
+	}
+	rootCid, err := root.Flush(ctx)
+	require.NoError(t, err)
+	return rootCid
+}
+
+// returns a unique SectorOnChainInfo with each invocation with SectorNumber set to `sectorNo`.
+func newSectorOnChainInfo(sectorNo abi.SectorNumber, sealed cid.Cid, weight big.Int, activation, expiration abi.ChainEpoch) miner.SectorOnChainInfo {
+	info := newSectorPreCommitInfo(sectorNo, sealed, expiration)
+	return miner.SectorOnChainInfo{
+		Info:               *info,
+		ActivationEpoch:    activation,
+		DealWeight:         weight,
+		VerifiedDealWeight: weight,
+	}
+}
+
+const (
+	sectorSealRandEpochValue = abi.ChainEpoch(1)
+)
+
+// returns a unique SectorPreCommitInfo with each invocation with SectorNumber set to `sectorNo`.
+func newSectorPreCommitInfo(sectorNo abi.SectorNumber, sealed cid.Cid, expiration abi.ChainEpoch) *miner.SectorPreCommitInfo {
+	return &miner.SectorPreCommitInfo{
+		SealProof:     abi.RegisteredSealProof_StackedDrg32GiBV1,
+		SectorNumber:  sectorNo,
+		SealedCID:     sealed,
+		SealRandEpoch: sectorSealRandEpochValue,
+		DealIDs:       nil,
+		Expiration:    expiration,
+	}
+}
@@ -3,12 +3,13 @@ package events
 import (
 	"context"

+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"golang.org/x/xerrors"

 	"github.com/filecoin-project/lotus/chain/types"
 )

-type tsByHFunc func(context.Context, uint64, types.TipSetKey) (*types.TipSet, error)
+type tsByHFunc func(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error)

 // tipSetCache implements a simple ring-buffer cache to keep track of recent
 // tipsets
@@ -20,7 +21,7 @@ type tipSetCache struct {
 	storage tsByHFunc
 }

-func newTSCache(cap int, storage tsByHFunc) *tipSetCache {
+func newTSCache(cap abi.ChainEpoch, storage tsByHFunc) *tipSetCache {
 	return &tipSetCache{
 		cache: make([]*types.TipSet, cap),
 		start: 0,
@@ -77,7 +78,7 @@ func (tsc *tipSetCache) revert(ts *types.TipSet) error {
 	return nil
 }

-func (tsc *tipSetCache) getNonNull(height uint64) (*types.TipSet, error) {
+func (tsc *tipSetCache) getNonNull(height abi.ChainEpoch) (*types.TipSet, error) {
 	for {
 		ts, err := tsc.get(height)
 		if err != nil {
@@ -90,7 +91,7 @@ func (tsc *tipSetCache) getNonNull(height uint64) (*types.TipSet, error) {
 	}
 }

-func (tsc *tipSetCache) get(height uint64) (*types.TipSet, error) {
+func (tsc *tipSetCache) get(height abi.ChainEpoch) (*types.TipSet, error) {
 	if tsc.len == 0 {
 		log.Warnf("tipSetCache.get: cache is empty, requesting from storage (h=%d)", height)
 		return tsc.storage(context.TODO(), height, types.EmptyTSK)
@@ -4,6 +4,8 @@ import (
 	"context"
 	"testing"

+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
 	"github.com/stretchr/testify/require"

 	"github.com/filecoin-project/go-address"
@@ -11,12 +13,12 @@ import (
 )

 func TestTsCache(t *testing.T) {
-	tsc := newTSCache(50, func(context.Context, uint64, types.TipSetKey) (*types.TipSet, error) {
+	tsc := newTSCache(50, func(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error) {
 		t.Fatal("storage call")
 		return &types.TipSet{}, nil
 	})

-	h := uint64(75)
+	h := abi.ChainEpoch(75)

 	a, _ := address.NewFromString("t00")

@@ -27,8 +29,8 @@ func TestTsCache(t *testing.T) {
 			ParentStateRoot:       dummyCid,
 			Messages:              dummyCid,
 			ParentMessageReceipts: dummyCid,
-			BlockSig:              &types.Signature{Type: types.KTBLS},
-			BLSAggregate:          types.Signature{Type: types.KTBLS},
+			BlockSig:              &crypto.Signature{Type: crypto.SigTypeBLS},
+			BLSAggregate:          &crypto.Signature{Type: crypto.SigTypeBLS},
 		}})
 		if err != nil {
 			t.Fatal(err)
@@ -54,12 +56,12 @@ func TestTsCache(t *testing.T) {
 }

 func TestTsCacheNulls(t *testing.T) {
-	tsc := newTSCache(50, func(context.Context, uint64, types.TipSetKey) (*types.TipSet, error) {
+	tsc := newTSCache(50, func(context.Context, abi.ChainEpoch, types.TipSetKey) (*types.TipSet, error) {
 		t.Fatal("storage call")
 		return &types.TipSet{}, nil
 	})

-	h := uint64(75)
+	h := abi.ChainEpoch(75)

 	a, _ := address.NewFromString("t00")
 	add := func() {
@@ -69,8 +71,8 @@ func TestTsCacheNulls(t *testing.T) {
 			ParentStateRoot:       dummyCid,
 			Messages:              dummyCid,
 			ParentMessageReceipts: dummyCid,
-			BlockSig:              &types.Signature{Type: types.KTBLS},
-			BLSAggregate:          types.Signature{Type: types.KTBLS},
+			BlockSig:              &crypto.Signature{Type: crypto.SigTypeBLS},
+			BLSAggregate:          &crypto.Signature{Type: crypto.SigTypeBLS},
 		}})
 		if err != nil {
 			t.Fatal(err)
@@ -5,15 +5,14 @@ import (

 	"golang.org/x/xerrors"

-	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
 )

-func (e *calledEvents) CheckMsg(ctx context.Context, smsg store.ChainMsg, hnd CalledHandler) CheckFunc {
+func (me *messageEvents) CheckMsg(ctx context.Context, smsg types.ChainMsg, hnd MsgHandler) CheckFunc {
 	msg := smsg.VMMessage()

 	return func(ts *types.TipSet) (done bool, more bool, err error) {
-		fa, err := e.cs.StateGetActor(ctx, msg.From, ts.Key())
+		fa, err := me.cs.StateGetActor(ctx, msg.From, ts.Key())
 		if err != nil {
 			return false, true, err
 		}
@@ -23,7 +22,7 @@ func (e *calledEvents) CheckMsg(ctx context.Context, smsg store.ChainMsg, hnd Ca
 			return false, true, nil
 		}

-		rec, err := e.cs.StateGetReceipt(ctx, smsg.VMMessage().Cid(), ts.Key())
+		rec, err := me.cs.StateGetReceipt(ctx, smsg.VMMessage().Cid(), ts.Key())
 		if err != nil {
 			return false, true, xerrors.Errorf("getting receipt in CheckMsg: %w", err)
 		}
@@ -34,10 +33,10 @@ func (e *calledEvents) CheckMsg(ctx context.Context, smsg store.ChainMsg, hnd Ca
 	}
 }

-func (e *calledEvents) MatchMsg(inmsg *types.Message) MatchFunc {
+func (me *messageEvents) MatchMsg(inmsg *types.Message) MsgMatchFunc {
 	return func(msg *types.Message) (bool, error) {
 		if msg.From == inmsg.From && msg.Nonce == inmsg.Nonce && !inmsg.Equals(msg) {
-			return false, xerrors.Errorf("matching msg %s from %s, nonce %d: got duplicate origin/nonce msg %s", inmsg.Cid(), inmsg.From, inmsg.Nonce, msg.Nonce)
+			return false, xerrors.Errorf("matching msg %s from %s, nonce %d: got duplicate origin/nonce msg %d", inmsg.Cid(), inmsg.From, inmsg.Nonce, msg.Nonce)
 		}

 		return inmsg.Equals(msg), nil
@@ -3,27 +3,32 @@ package gen
 import (
 	"bytes"
 	"context"
-	"crypto/sha256"
-	"encoding/binary"
 	"fmt"
 	"io/ioutil"
 	"sync/atomic"
+	"time"

+	"github.com/filecoin-project/go-address"
+	commcid "github.com/filecoin-project/go-fil-commcid"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	saminer "github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
 	block "github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
-	"github.com/ipfs/go-car"
 	"github.com/ipfs/go-cid"
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	offline "github.com/ipfs/go-ipfs-exchange-offline"
+	format "github.com/ipfs/go-ipld-format"
 	logging "github.com/ipfs/go-log/v2"
 	"github.com/ipfs/go-merkledag"
-	peer "github.com/libp2p/go-libp2p-core/peer"
+	"github.com/ipld/go-car"
+	"go.opencensus.io/trace"
+	"golang.org/x/xerrors"

-	ffi "github.com/filecoin-project/filecoin-ffi"
-	"github.com/filecoin-project/go-address"
-	sectorbuilder "github.com/filecoin-project/go-sectorbuilder"
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/beacon"
+	genesis2 "github.com/filecoin-project/lotus/chain/gen/genesis"
 	"github.com/filecoin-project/lotus/chain/stmgr"
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
@@ -33,15 +38,17 @@ import (
 	"github.com/filecoin-project/lotus/genesis"
 	"github.com/filecoin-project/lotus/lib/sigs"
 	"github.com/filecoin-project/lotus/node/repo"
-
-	"go.opencensus.io/trace"
-	"golang.org/x/xerrors"
+	"github.com/filecoin-project/sector-storage/ffiwrapper"
 )

 var log = logging.Logger("gen")

 const msgsPerBlock = 20

+var ValidWpostForTesting = []abi.PoStProof{{
+	ProofBytes: []byte("valid proof"),
+}}
+
 type ChainGen struct {
 	msgsPerBlock int

@@ -49,18 +56,20 @@ type ChainGen struct {

 	cs *store.ChainStore

+	beacon beacon.RandomBeacon
+
 	sm *stmgr.StateManager

 	genesis   *types.BlockHeader
 	CurTipset *store.FullTipSet

-	Timestamper func(*types.TipSet, uint64) uint64
+	Timestamper func(*types.TipSet, abi.ChainEpoch) uint64

 	GetMessages func(*ChainGen) ([]*types.SignedMessage, error)

 	w *wallet.Wallet

-	eppProvs    map[address.Address]ElectionPoStProver
+	eppProvs    map[address.Address]WinningPoStProver
 	Miners      []address.Address
 	receivers   []address.Address
 	banker      address.Address
@@ -83,7 +92,11 @@ func (m mybs) Get(c cid.Cid) (block.Block, error) {
 	return b, nil
 }

-func NewGenerator() (*ChainGen, error) {
+func NewGeneratorWithSectors(numSectors int) (*ChainGen, error) {
+	saminer.SupportedProofTypes = map[abi.RegisteredSealProof]struct{}{
+		abi.RegisteredSealProof_StackedDrg2KiBV1: {},
+	}
+
 	mr := repo.NewMemory(nil)
 	lr, err := mr.Lock(repo.StorageMiner)
 	if err != nil {
@@ -95,7 +108,7 @@ func NewGenerator() (*ChainGen, error) {
 		return nil, xerrors.Errorf("failed to get metadata datastore: %w", err)
 	}

-	bds, err := lr.Datastore("/blocks")
+	bds, err := lr.Datastore("/chain")
 	if err != nil {
 		return nil, xerrors.Errorf("failed to get blocks datastore: %w", err)
 	}
@@ -112,74 +125,81 @@ func NewGenerator() (*ChainGen, error) {
 		return nil, xerrors.Errorf("creating memrepo wallet failed: %w", err)
 	}

-	banker, err := w.GenerateKey(types.KTSecp256k1)
+	banker, err := w.GenerateKey(crypto.SigTypeSecp256k1)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to generate banker key: %w", err)
 	}

 	receievers := make([]address.Address, msgsPerBlock)
 	for r := range receievers {
-		receievers[r], err = w.GenerateKey(types.KTBLS)
+		receievers[r], err = w.GenerateKey(crypto.SigTypeBLS)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to generate receiver key: %w", err)
 		}
 	}

-	maddr1, err := address.NewFromString("t0300")
-	if err != nil {
-		return nil, err
-	}
+	maddr1 := genesis2.MinerAddress(0)

 	m1temp, err := ioutil.TempDir("", "preseal")
 	if err != nil {
 		return nil, err
 	}

-	genm1, err := seed.PreSeal(maddr1, 1024, 0, 1, m1temp, []byte("some randomness"))
+	genm1, k1, err := seed.PreSeal(maddr1, abi.RegisteredSealProof_StackedDrg2KiBV1, 0, numSectors, m1temp, []byte("some randomness"), nil, true)
 	if err != nil {
 		return nil, err
 	}

-	maddr2, err := address.NewFromString("t0301")
-	if err != nil {
-		return nil, err
-	}
+	maddr2 := genesis2.MinerAddress(1)

 	m2temp, err := ioutil.TempDir("", "preseal")
 	if err != nil {
 		return nil, err
 	}

-	genm2, err := seed.PreSeal(maddr2, 1024, 0, 1, m2temp, []byte("some randomness"))
+	genm2, k2, err := seed.PreSeal(maddr2, abi.RegisteredSealProof_StackedDrg2KiBV1, 0, numSectors, m2temp, []byte("some randomness"), nil, true)
 	if err != nil {
 		return nil, err
 	}

-	mk1, err := w.Import(&genm1.Key)
+	mk1, err := w.Import(k1)
 	if err != nil {
 		return nil, err
 	}
-	mk2, err := w.Import(&genm2.Key)
+	mk2, err := w.Import(k2)
 	if err != nil {
 		return nil, err
 	}

-	minercfg := &GenMinerCfg{
-		PeerIDs: []peer.ID{"peerID1", "peerID2"},
-		PreSeals: map[string]genesis.GenesisMiner{
-			maddr1.String(): *genm1,
-			maddr2.String(): *genm2,
+	sys := vm.Syscalls(&genFakeVerifier{})
+
+	tpl := genesis.Template{
+		Accounts: []genesis.Actor{
+			{
+				Type:    genesis.TAccount,
+				Balance: types.FromFil(40000),
+				Meta:    (&genesis.AccountMeta{Owner: mk1}).ActorMeta(),
+			},
+			{
+				Type:    genesis.TAccount,
+				Balance: types.FromFil(40000),
+				Meta:    (&genesis.AccountMeta{Owner: mk2}).ActorMeta(),
+			},
+			{
+				Type:    genesis.TAccount,
+				Balance: types.FromFil(50000),
+				Meta:    (&genesis.AccountMeta{Owner: banker}).ActorMeta(),
+			},
 		},
-		MinerAddrs: []address.Address{maddr1, maddr2},
+		Miners: []genesis.Miner{
+			*genm1,
+			*genm2,
+		},
+		NetworkName: "",
+		Timestamp:   uint64(time.Now().Add(-500 * time.Duration(build.BlockDelaySecs) * time.Second).Unix()),
 	}

-	sys := vm.Syscalls(sectorbuilder.ProofVerifier)
-
-	genb, err := MakeGenesisBlock(bs, sys, map[address.Address]types.BigInt{
-		mk1:    types.FromFil(40000),
-		mk2:    types.FromFil(40000),
-		banker: types.FromFil(50000),
-	}, minercfg, 100000)
+	genb, err := genesis2.MakeGenesisBlock(context.TODO(), bs, sys, tpl)
 	if err != nil {
 		return nil, xerrors.Errorf("make genesis block failed: %w", err)
 	}
@@ -193,27 +213,32 @@ func NewGenerator() (*ChainGen, error) {
 		return nil, xerrors.Errorf("set genesis failed: %w", err)
 	}

-	if len(minercfg.MinerAddrs) == 0 {
-		return nil, xerrors.Errorf("MakeGenesisBlock failed to set miner address")
-	}
-
-	mgen := make(map[address.Address]ElectionPoStProver)
-	for _, m := range minercfg.MinerAddrs {
-		mgen[m] = &eppProvider{}
+	mgen := make(map[address.Address]WinningPoStProver)
+	for i := range tpl.Miners {
+		mgen[genesis2.MinerAddress(uint64(i))] = &wppProvider{}
 	}

 	sm := stmgr.NewStateManager(cs)

+	miners := []address.Address{maddr1, maddr2}
+
+	beac := beacon.NewMockBeacon(time.Second)
+	//beac, err := drand.NewDrandBeacon(tpl.Timestamp, build.BlockDelaySecs)
+	//if err != nil {
+	//return nil, xerrors.Errorf("creating drand beacon: %w", err)
+	//}
+
 	gen := &ChainGen{
 		bs:           bs,
 		cs:           cs,
 		sm:           sm,
 		msgsPerBlock: msgsPerBlock,
 		genesis:      genb.Genesis,
+		beacon:       beac,
 		w:            w,

 		GetMessages: getRandomMessages,
-		Miners:      minercfg.MinerAddrs,
+		Miners:      miners,
 		eppProvs:    mgen,
 		banker:      banker,
 		receivers:   receievers,
@@ -227,6 +252,10 @@ func NewGenerator() (*ChainGen, error) {
 	return gen, nil
 }

+func NewGenerator() (*ChainGen, error) {
+	return NewGeneratorWithSectors(1)
+}
+
 func (cg *ChainGen) SetStateManager(sm *stmgr.StateManager) {
 	cg.sm = sm
 }
@@ -246,46 +275,76 @@ func (cg *ChainGen) GenesisCar() ([]byte, error) {

 	out := new(bytes.Buffer)

-	if err := car.WriteCar(context.TODO(), dserv, []cid.Cid{cg.Genesis().Cid()}, out); err != nil {
+	if err := car.WriteCarWithWalker(context.TODO(), dserv, []cid.Cid{cg.Genesis().Cid()}, out, CarWalkFunc); err != nil {
 		return nil, xerrors.Errorf("genesis car write car failed: %w", err)
 	}

 	return out.Bytes(), nil
 }

-func (cg *ChainGen) nextBlockProof(ctx context.Context, pts *types.TipSet, m address.Address, round int64) (*types.EPostProof, *types.Ticket, error) {
+func CarWalkFunc(nd format.Node) (out []*format.Link, err error) {
+	for _, link := range nd.Links() {
+		if link.Cid.Prefix().MhType == uint64(commcid.FC_SEALED_V1) || link.Cid.Prefix().MhType == uint64(commcid.FC_UNSEALED_V1) {
+			continue
+		}
+		out = append(out, link)
+	}

-	lastTicket := pts.MinTicket()
+	return out, nil
+}
+
+func (cg *ChainGen) nextBlockProof(ctx context.Context, pts *types.TipSet, m address.Address, round abi.ChainEpoch) ([]types.BeaconEntry, *types.ElectionProof, *types.Ticket, error) {
+	mc := &mca{w: cg.w, sm: cg.sm, pv: ffiwrapper.ProofVerifier, bcn: cg.beacon}
+
+	mbi, err := mc.MinerGetBaseInfo(ctx, m, round, pts.Key())
+	if err != nil {
+		return nil, nil, nil, xerrors.Errorf("get miner base info: %w", err)
+	}
+
+	prev := mbi.PrevBeaconEntry
+
+	entries, err := beacon.BeaconEntriesForBlock(ctx, cg.beacon, round, prev)
+	if err != nil {
+		return nil, nil, nil, xerrors.Errorf("get beacon entries for block: %w", err)
+	}
+
+	rbase := prev
+	if len(entries) > 0 {
+		rbase = entries[len(entries)-1]
+	}
+
+	eproof, err := IsRoundWinner(ctx, pts, round, m, rbase, mbi, mc)
+	if err != nil {
+		return nil, nil, nil, xerrors.Errorf("checking round winner failed: %w", err)
+	}
+
+	buf := new(bytes.Buffer)
+	if err := m.MarshalCBOR(buf); err != nil {
+		return nil, nil, nil, xerrors.Errorf("failed to cbor marshal address: %w", err)
+	}
+
+	if len(entries) == 0 {
+		buf.Write(pts.MinTicket().VRFProof)
+	}
+
+	ticketRand, err := store.DrawRandomness(rbase.Data, crypto.DomainSeparationTag_TicketProduction, round-build.TicketRandomnessLookback, buf.Bytes())
+	if err != nil {
+		return nil, nil, nil, err
+	}

 	st := pts.ParentState()

 	worker, err := stmgr.GetMinerWorkerRaw(ctx, cg.sm, st, m)
 	if err != nil {
-		return nil, nil, xerrors.Errorf("get miner worker: %w", err)
+		return nil, nil, nil, xerrors.Errorf("get miner worker: %w", err)
 	}

-	vrfout, err := ComputeVRF(ctx, cg.w.Sign, worker, m, DSepTicket, lastTicket.VRFProof)
+	vrfout, err := ComputeVRF(ctx, cg.w.Sign, worker, ticketRand)
 	if err != nil {
-		return nil, nil, xerrors.Errorf("compute VRF: %w", err)
+		return nil, nil, nil, xerrors.Errorf("compute VRF: %w", err)
 	}

-	tick := &types.Ticket{
-		VRFProof: vrfout,
-	}
-
-	eproofin, err := IsRoundWinner(ctx, pts, round, m, cg.eppProvs[m], &mca{w: cg.w, sm: cg.sm})
-	if err != nil {
-		return nil, nil, xerrors.Errorf("checking round winner failed: %w", err)
-	}
-	if eproofin == nil {
-		return nil, tick, nil
-	}
-	eproof, err := ComputeProof(ctx, cg.eppProvs[m], eproofin)
-	if err != nil {
-		return nil, nil, xerrors.Errorf("computing proof: %w", err)
-	}
-
-	return eproof, tick, nil
+	return entries, eproof, &types.Ticket{VRFProof: vrfout}, nil
 }

 type MinedTipSet struct {
@@ -311,15 +370,21 @@ func (cg *ChainGen) NextTipSetFromMiners(base *types.TipSet, miners []address.Ad
 		return nil, xerrors.Errorf("get random messages: %w", err)
 	}

-	for round := int64(base.Height() + 1); len(blks) == 0; round++ {
+	for round := base.Height() + 1; len(blks) == 0; round++ {
 		for _, m := range miners {
-			proof, t, err := cg.nextBlockProof(context.TODO(), base, m, round)
+			bvals, et, ticket, err := cg.nextBlockProof(context.TODO(), base, m, round)
 			if err != nil {
 				return nil, xerrors.Errorf("next block proof: %w", err)
 			}

-			if proof != nil {
-				fblk, err := cg.makeBlock(base, m, proof, t, uint64(round), msgs)
+			if et != nil {
+				// TODO: maybe think about passing in more real parameters to this?
+				wpost, err := cg.eppProvs[m].ComputeProof(context.TODO(), nil, nil)
+				if err != nil {
+					return nil, err
+				}
+
+				fblk, err := cg.makeBlock(base, m, ticket, et, bvals, round, wpost, msgs)
 				if err != nil {
 					return nil, xerrors.Errorf("making a block for next tipset failed: %w", err)
 				}
@@ -341,16 +406,28 @@ func (cg *ChainGen) NextTipSetFromMiners(base *types.TipSet, miners []address.Ad
 	}, nil
 }

-func (cg *ChainGen) makeBlock(parents *types.TipSet, m address.Address, eproof *types.EPostProof, ticket *types.Ticket, height uint64, msgs []*types.SignedMessage) (*types.FullBlock, error) {
+func (cg *ChainGen) makeBlock(parents *types.TipSet, m address.Address, vrfticket *types.Ticket,
+	eticket *types.ElectionProof, bvals []types.BeaconEntry, height abi.ChainEpoch,
+	wpost []abi.PoStProof, msgs []*types.SignedMessage) (*types.FullBlock, error) {

 	var ts uint64
 	if cg.Timestamper != nil {
 		ts = cg.Timestamper(parents, height-parents.Height())
 	} else {
-		ts = parents.MinTimestamp() + ((height - parents.Height()) * build.BlockDelay)
+		ts = parents.MinTimestamp() + uint64(height-parents.Height())*build.BlockDelaySecs
 	}

-	fblk, err := MinerCreateBlock(context.TODO(), cg.sm, cg.w, m, parents, ticket, eproof, msgs, height, ts)
+	fblk, err := MinerCreateBlock(context.TODO(), cg.sm, cg.w, &api.BlockTemplate{
+		Miner:            m,
+		Parents:          parents.Key(),
+		Ticket:           vrfticket,
+		Eproof:           eticket,
+		BeaconValues:     bvals,
+		Messages:         msgs,
+		Epoch:            height,
+		Timestamp:        ts,
+		WinningPoStProof: wpost,
+	})
 	if err != nil {
 		return nil, err
 	}
@@ -358,7 +435,7 @@ func (cg *ChainGen) makeBlock(parents *types.TipSet, m address.Address, eproof *
 	return fblk, err
 }

-// This function is awkward. It's used to deal with messages made when
+// ResyncBankerNonce is used for dealing with messages made when
 // simulating forks
 func (cg *ChainGen) ResyncBankerNonce(ts *types.TipSet) error {
 	act, err := cg.sm.GetActor(cg.banker, ts)
@@ -391,7 +468,7 @@ func getRandomMessages(cg *ChainGen) ([]*types.SignedMessage, error) {

 			Method: 0,

-			GasLimit: types.NewInt(10000),
+			GasLimit: 10000,
 			GasPrice: types.NewInt(0),
 		}

@@ -417,232 +494,86 @@ func (cg *ChainGen) YieldRepo() (repo.Repo, error) {
 }

 type MiningCheckAPI interface {
-	ChainGetRandomness(context.Context, types.TipSetKey, int64) ([]byte, error)
+	ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error)

-	StateMinerPower(context.Context, address.Address, types.TipSetKey) (api.MinerPower, error)
+	MinerGetBaseInfo(context.Context, address.Address, abi.ChainEpoch, types.TipSetKey) (*api.MiningBaseInfo, error)

-	StateMinerWorker(context.Context, address.Address, types.TipSetKey) (address.Address, error)
-
-	StateMinerSectorSize(context.Context, address.Address, types.TipSetKey) (uint64, error)
-
-	StateMinerProvingSet(context.Context, address.Address, types.TipSetKey) ([]*api.ChainSectorInfo, error)
-
-	WalletSign(context.Context, address.Address, []byte) (*types.Signature, error)
+	WalletSign(context.Context, address.Address, []byte) (*crypto.Signature, error)
 }

 type mca struct {
-	w  *wallet.Wallet
-	sm *stmgr.StateManager
+	w   *wallet.Wallet
+	sm  *stmgr.StateManager
+	pv  ffiwrapper.Verifier
+	bcn beacon.RandomBeacon
 }

-func (mca mca) ChainGetRandomness(ctx context.Context, pts types.TipSetKey, lb int64) ([]byte, error) {
-	return mca.sm.ChainStore().GetRandomness(ctx, pts.Cids(), int64(lb))
-}
-
-func (mca mca) StateMinerPower(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (api.MinerPower, error) {
-	ts, err := mca.sm.ChainStore().LoadTipSet(tsk)
+func (mca mca) ChainGetRandomness(ctx context.Context, tsk types.TipSetKey, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error) {
+	pts, err := mca.sm.ChainStore().LoadTipSet(tsk)
 	if err != nil {
-		return api.MinerPower{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
-	}
-	mpow, tpow, err := stmgr.GetPower(ctx, mca.sm, ts, maddr)
-	if err != nil {
-		return api.MinerPower{}, err
+		return nil, xerrors.Errorf("loading tipset key: %w", err)
 	}

-	return api.MinerPower{
-		MinerPower: mpow,
-		TotalPower: tpow,
-	}, err
+	return mca.sm.ChainStore().GetRandomness(ctx, pts.Cids(), personalization, randEpoch, entropy)
 }

-func (mca mca) StateMinerWorker(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (address.Address, error) {
-	ts, err := mca.sm.ChainStore().LoadTipSet(tsk)
-	if err != nil {
-		return address.Undef, xerrors.Errorf("loading tipset %s: %w", tsk, err)
-	}
-	return stmgr.GetMinerWorkerRaw(ctx, mca.sm, ts.ParentState(), maddr)
+func (mca mca) MinerGetBaseInfo(ctx context.Context, maddr address.Address, epoch abi.ChainEpoch, tsk types.TipSetKey) (*api.MiningBaseInfo, error) {
+	return stmgr.MinerGetBaseInfo(ctx, mca.sm, mca.bcn, tsk, epoch, maddr, mca.pv)
 }

-func (mca mca) StateMinerSectorSize(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (uint64, error) {
-	ts, err := mca.sm.ChainStore().LoadTipSet(tsk)
-	if err != nil {
-		return 0, xerrors.Errorf("loading tipset %s: %w", tsk, err)
-	}
-	return stmgr.GetMinerSectorSize(ctx, mca.sm, ts, maddr)
-}
-
-func (mca mca) StateMinerProvingSet(ctx context.Context, maddr address.Address, tsk types.TipSetKey) ([]*api.ChainSectorInfo, error) {
-	ts, err := mca.sm.ChainStore().LoadTipSet(tsk)
-	if err != nil {
-		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
-	}
-	return stmgr.GetMinerProvingSet(ctx, mca.sm, ts, maddr)
-}
-
-func (mca mca) WalletSign(ctx context.Context, a address.Address, v []byte) (*types.Signature, error) {
+func (mca mca) WalletSign(ctx context.Context, a address.Address, v []byte) (*crypto.Signature, error) {
 	return mca.w.Sign(ctx, a, v)
 }

-type ElectionPoStProver interface {
-	GenerateCandidates(context.Context, sectorbuilder.SortedPublicSectorInfo, []byte) ([]sectorbuilder.EPostCandidate, error)
-	ComputeProof(context.Context, sectorbuilder.SortedPublicSectorInfo, []byte, []sectorbuilder.EPostCandidate) ([]byte, error)
+type WinningPoStProver interface {
+	GenerateCandidates(context.Context, abi.PoStRandomness, uint64) ([]uint64, error)
+	ComputeProof(context.Context, []abi.SectorInfo, abi.PoStRandomness) ([]abi.PoStProof, error)
 }

-type eppProvider struct{}
+type wppProvider struct{}

-func (epp *eppProvider) GenerateCandidates(ctx context.Context, _ sectorbuilder.SortedPublicSectorInfo, eprand []byte) ([]sectorbuilder.EPostCandidate, error) {
-	return []sectorbuilder.EPostCandidate{
-		{
-			SectorID:             1,
-			PartialTicket:        [32]byte{},
-			Ticket:               [32]byte{},
-			SectorChallengeIndex: 1,
-		},
-	}, nil
+func (wpp *wppProvider) GenerateCandidates(ctx context.Context, _ abi.PoStRandomness, _ uint64) ([]uint64, error) {
+	return []uint64{0}, nil
 }

-func (epp *eppProvider) ComputeProof(ctx context.Context, _ sectorbuilder.SortedPublicSectorInfo, eprand []byte, winners []sectorbuilder.EPostCandidate) ([]byte, error) {
-
-	return []byte("valid proof"), nil
+func (wpp *wppProvider) ComputeProof(context.Context, []abi.SectorInfo, abi.PoStRandomness) ([]abi.PoStProof, error) {
+	return ValidWpostForTesting, nil
 }

-type ProofInput struct {
-	sectors sectorbuilder.SortedPublicSectorInfo
-	hvrf    []byte
-	winners []sectorbuilder.EPostCandidate
-	vrfout  []byte
-}
+func IsRoundWinner(ctx context.Context, ts *types.TipSet, round abi.ChainEpoch,
+	miner address.Address, brand types.BeaconEntry, mbi *api.MiningBaseInfo, a MiningCheckAPI) (*types.ElectionProof, error) {

-func IsRoundWinner(ctx context.Context, ts *types.TipSet, round int64, miner address.Address, epp ElectionPoStProver, a MiningCheckAPI) (*ProofInput, error) {
-	r, err := a.ChainGetRandomness(ctx, ts.Key(), round-build.EcRandomnessLookback)
-	if err != nil {
-		return nil, xerrors.Errorf("chain get randomness: %w", err)
+	buf := new(bytes.Buffer)
+	if err := miner.MarshalCBOR(buf); err != nil {
+		return nil, xerrors.Errorf("failed to cbor marshal address: %w")
 	}

-	mworker, err := a.StateMinerWorker(ctx, miner, ts.Key())
+	electionRand, err := store.DrawRandomness(brand.Data, crypto.DomainSeparationTag_ElectionProofProduction, round, buf.Bytes())
 	if err != nil {
-		return nil, xerrors.Errorf("failed to get miner worker: %w", err)
+		return nil, xerrors.Errorf("failed to draw randomness: %w", err)
 	}

-	vrfout, err := ComputeVRF(ctx, a.WalletSign, mworker, miner, DSepElectionPost, r)
+	vrfout, err := ComputeVRF(ctx, a.WalletSign, mbi.WorkerKey, electionRand)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to compute VRF: %w", err)
 	}

-	pset, err := a.StateMinerProvingSet(ctx, miner, ts.Key())
-	if err != nil {
-		return nil, xerrors.Errorf("failed to load proving set for miner: %w", err)
-	}
-	if len(pset) == 0 {
+	// TODO: wire in real power
+	if !types.IsTicketWinner(vrfout, mbi.MinerPower, mbi.NetworkPower) {
 		return nil, nil
 	}

-	var sinfos []ffi.PublicSectorInfo
-	for _, s := range pset {
-		var commRa [32]byte
-		copy(commRa[:], s.CommR)
-		sinfos = append(sinfos, ffi.PublicSectorInfo{
-			SectorID: s.SectorID,
-			CommR:    commRa,
-		})
-	}
-	sectors := sectorbuilder.NewSortedPublicSectorInfo(sinfos)
-
-	hvrf := sha256.Sum256(vrfout)
-	candidates, err := epp.GenerateCandidates(ctx, sectors, hvrf[:])
-	if err != nil {
-		return nil, xerrors.Errorf("failed to generate electionPoSt candidates: %w", err)
-	}
-
-	pow, err := a.StateMinerPower(ctx, miner, ts.Key())
-	if err != nil {
-		return nil, xerrors.Errorf("failed to check power: %w", err)
-	}
-
-	ssize, err := a.StateMinerSectorSize(ctx, miner, ts.Key())
-	if err != nil {
-		return nil, xerrors.Errorf("failed to look up miners sector size: %w", err)
-	}
-
-	var winners []sectorbuilder.EPostCandidate
-	for _, c := range candidates {
-		if types.IsTicketWinner(c.PartialTicket[:], ssize, uint64(len(sinfos)), pow.TotalPower) {
-			winners = append(winners, c)
-		}
-	}
-
-	// no winners, sad
-	if len(winners) == 0 {
-		return nil, nil
-	}
-
-	return &ProofInput{
-		sectors: sectors,
-		hvrf:    hvrf[:],
-		winners: winners,
-		vrfout:  vrfout,
-	}, nil
+	return &types.ElectionProof{VRFProof: vrfout}, nil
 }

-func ComputeProof(ctx context.Context, epp ElectionPoStProver, pi *ProofInput) (*types.EPostProof, error) {
-	proof, err := epp.ComputeProof(ctx, pi.sectors, pi.hvrf, pi.winners)
-	if err != nil {
-		return nil, xerrors.Errorf("failed to compute snark for election proof: %w", err)
-	}
+type SignFunc func(context.Context, address.Address, []byte) (*crypto.Signature, error)

-	ept := types.EPostProof{
-		Proof:    proof,
-		PostRand: pi.vrfout,
-	}
-	for _, win := range pi.winners {
-		part := make([]byte, 32)
-		copy(part, win.PartialTicket[:])
-		ept.Candidates = append(ept.Candidates, types.EPostTicket{
-			Partial:        part,
-			SectorID:       win.SectorID,
-			ChallengeIndex: win.SectorChallengeIndex,
-		})
-	}
-
-	return &ept, nil
-}
-
-type SignFunc func(context.Context, address.Address, []byte) (*types.Signature, error)
-
-const (
-	DSepTicket       = 1
-	DSepElectionPost = 2
-)
-
-func hashVRFBase(personalization uint64, miner address.Address, input []byte) ([]byte, error) {
-	if miner.Protocol() != address.ID {
-		return nil, xerrors.Errorf("miner address for compute VRF must be an ID address")
-	}
-
-	var persbuf [8]byte
-	binary.LittleEndian.PutUint64(persbuf[:], personalization)
-
-	h := sha256.New()
-	h.Write(persbuf[:])
-	h.Write([]byte{0})
-	h.Write(input)
-	h.Write([]byte{0})
-	h.Write(miner.Bytes())
-
-	return h.Sum(nil), nil
-}
-
-func VerifyVRF(ctx context.Context, worker, miner address.Address, p uint64, input, vrfproof []byte) error {
+func VerifyVRF(ctx context.Context, worker address.Address, vrfBase, vrfproof []byte) error {
 	_, span := trace.StartSpan(ctx, "VerifyVRF")
 	defer span.End()

-	vrfBase, err := hashVRFBase(p, miner, input)
-	if err != nil {
-		return xerrors.Errorf("computing vrf base failed: %w", err)
-	}
-
-	sig := &types.Signature{
-		Type: types.KTBLS,
+	sig := &crypto.Signature{
+		Type: crypto.SigTypeBLS,
 		Data: vrfproof,
 	}

@@ -653,20 +584,35 @@ func VerifyVRF(ctx context.Context, worker, miner address.Address, p uint64, inp
 	return nil
 }

-func ComputeVRF(ctx context.Context, sign SignFunc, worker, miner address.Address, p uint64, input []byte) ([]byte, error) {
-	sigInput, err := hashVRFBase(p, miner, input)
-	if err != nil {
-		return nil, err
-	}
-
+func ComputeVRF(ctx context.Context, sign SignFunc, worker address.Address, sigInput []byte) ([]byte, error) {
 	sig, err := sign(ctx, worker, sigInput)
 	if err != nil {
 		return nil, err
 	}

-	if sig.Type != types.KTBLS {
+	if sig.Type != crypto.SigTypeBLS {
 		return nil, fmt.Errorf("miner worker address was not a BLS key")
 	}

 	return sig.Data, nil
 }
+
+type genFakeVerifier struct{}
+
+var _ ffiwrapper.Verifier = (*genFakeVerifier)(nil)
+
+func (m genFakeVerifier) VerifySeal(svi abi.SealVerifyInfo) (bool, error) {
+	return true, nil
+}
+
+func (m genFakeVerifier) VerifyWinningPoSt(ctx context.Context, info abi.WinningPoStVerifyInfo) (bool, error) {
+	panic("not supported")
+}
+
+func (m genFakeVerifier) VerifyWindowPoSt(ctx context.Context, info abi.WindowPoStVerifyInfo) (bool, error) {
+	panic("not supported")
+}
+
+func (m genFakeVerifier) GenerateWinningPoStSectorChallenge(ctx context.Context, proof abi.RegisteredPoStProof, id abi.ActorID, randomness abi.PoStRandomness, u uint64) ([]uint64, error) {
+	panic("not supported")
+}
@@ -3,20 +3,28 @@ package gen
 import (
 	"testing"

-	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+	"github.com/filecoin-project/specs-actors/actors/builtin/verifreg"
+
 	_ "github.com/filecoin-project/lotus/lib/sigs/bls"
 	_ "github.com/filecoin-project/lotus/lib/sigs/secp"
 )

 func init() {
-	build.SectorSizes = []uint64{1024}
-	build.MinimumMinerPower = 1024
+	miner.SupportedProofTypes = map[abi.RegisteredSealProof]struct{}{
+		abi.RegisteredSealProof_StackedDrg2KiBV1: {},
+	}
+	power.ConsensusMinerMinPower = big.NewInt(2048)
+	verifreg.MinVerifiedDealSize = big.NewInt(256)
 }

-func testGeneration(t testing.TB, n int, msgs int) {
-	g, err := NewGenerator()
+func testGeneration(t testing.TB, n int, msgs int, sectors int) {
+	g, err := NewGeneratorWithSectors(sectors)
 	if err != nil {
-		t.Fatal(err)
+		t.Fatalf("%+v", err)
 	}

 	g.msgsPerBlock = msgs
@@ -24,30 +32,31 @@ func testGeneration(t testing.TB, n int, msgs int) {
 	for i := 0; i < n; i++ {
 		mts, err := g.NextTipSet()
 		if err != nil {
-			t.Fatalf("error at H:%d, %s", i, err)
+			t.Fatalf("error at H:%d, %+v", i, err)
 		}
 		_ = mts
 	}
 }

 func TestChainGeneration(t *testing.T) {
-	testGeneration(t, 10, 20)
+	testGeneration(t, 10, 20, 1)
+	testGeneration(t, 10, 20, 25)
 }

 func BenchmarkChainGeneration(b *testing.B) {
 	b.Run("0-messages", func(b *testing.B) {
-		testGeneration(b, b.N, 0)
+		testGeneration(b, b.N, 0, 1)
 	})

 	b.Run("10-messages", func(b *testing.B) {
-		testGeneration(b, b.N, 10)
+		testGeneration(b, b.N, 10, 1)
 	})

 	b.Run("100-messages", func(b *testing.B) {
-		testGeneration(b, b.N, 100)
+		testGeneration(b, b.N, 100, 1)
 	})

 	b.Run("1000-messages", func(b *testing.B) {
-		testGeneration(b, b.N, 1000)
+		testGeneration(b, b.N, 1000, 1)
 	})
 }
@@ -0,0 +1,370 @@
+package genesis
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/filecoin-project/go-amt-ipld/v2"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/account"
+	"github.com/filecoin-project/specs-actors/actors/builtin/verifreg"
+	"github.com/filecoin-project/specs-actors/actors/runtime"
+	"github.com/ipfs/go-cid"
+	"github.com/ipfs/go-datastore"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+	logging "github.com/ipfs/go-log/v2"
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/go-address"
+
+	"github.com/filecoin-project/lotus/chain/state"
+	"github.com/filecoin-project/lotus/chain/store"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/chain/vm"
+	"github.com/filecoin-project/lotus/genesis"
+)
+
+const AccountStart = 100
+const MinerStart = 1000
+const MaxAccounts = MinerStart - AccountStart
+
+var log = logging.Logger("genesis")
+
+type GenesisBootstrap struct {
+	Genesis *types.BlockHeader
+}
+
+/*
+From a list of parameters, create a genesis block / initial state
+
+The process:
+- Bootstrap state (MakeInitialStateTree)
+  - Create empty state
+  - Create system actor
+  - Make init actor
+    - Create accounts mappings
+    - Set NextID to MinerStart
+  - Setup Reward (1.4B fil)
+  - Setup Cron
+  - Create empty power actor
+  - Create empty market
+  - Create verified registry
+  - Setup burnt fund address
+  - Initialize account / msig balances
+- Instantiate early vm with genesis syscalls
+  - Create miners
+    - Each:
+      - power.CreateMiner, set msg value to PowerBalance
+      - market.AddFunds with correct value
+      - market.PublishDeals for related sectors
+      - Set precommits
+      - Commit presealed sectors
+
+Data Types:
+
+PreSeal :{
+  CommR    CID
+  CommD    CID
+  SectorID SectorNumber
+  Deal     market.DealProposal # Start at 0, self-deal!
+}
+
+Genesis: {
+	Accounts: [ # non-miner, non-singleton actors, max len = MaxAccounts
+		{
+			Type: "account" / "multisig",
+			Value: "attofil",
+			[Meta: {msig settings, account key..}]
+		},...
+	],
+	Miners: [
+		{
+			Owner, Worker Addr # ID
+			MarketBalance, PowerBalance TokenAmount
+			SectorSize uint64
+			PreSeals []PreSeal
+		},...
+	],
+}
+
+*/
+
+func MakeInitialStateTree(ctx context.Context, bs bstore.Blockstore, template genesis.Template) (*state.StateTree, error) {
+	// Create empty state tree
+
+	cst := cbor.NewCborStore(bs)
+	_, err := cst.Put(context.TODO(), []struct{}{})
+	if err != nil {
+		return nil, xerrors.Errorf("putting empty object: %w", err)
+	}
+
+	state, err := state.NewStateTree(cst)
+	if err != nil {
+		return nil, xerrors.Errorf("making new state tree: %w", err)
+	}
+
+	emptyobject, err := cst.Put(context.TODO(), []struct{}{})
+	if err != nil {
+		return nil, xerrors.Errorf("failed putting empty object: %w", err)
+	}
+
+	// Create system actor
+
+	sysact, err := SetupSystemActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup init actor: %w", err)
+	}
+	if err := state.SetActor(builtin.SystemActorAddr, sysact); err != nil {
+		return nil, xerrors.Errorf("set init actor: %w", err)
+	}
+
+	// Create init actor
+
+	initact, err := SetupInitActor(bs, template.NetworkName, template.Accounts)
+	if err != nil {
+		return nil, xerrors.Errorf("setup init actor: %w", err)
+	}
+	if err := state.SetActor(builtin.InitActorAddr, initact); err != nil {
+		return nil, xerrors.Errorf("set init actor: %w", err)
+	}
+
+	// Setup reward
+	rewact, err := SetupRewardActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup init actor: %w", err)
+	}
+
+	err = state.SetActor(builtin.RewardActorAddr, rewact)
+	if err != nil {
+		return nil, xerrors.Errorf("set network account actor: %w", err)
+	}
+
+	// Setup cron
+	cronact, err := SetupCronActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup cron actor: %w", err)
+	}
+	if err := state.SetActor(builtin.CronActorAddr, cronact); err != nil {
+		return nil, xerrors.Errorf("set cron actor: %w", err)
+	}
+
+	// Create empty power actor
+	spact, err := SetupStoragePowerActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup storage market actor: %w", err)
+	}
+	if err := state.SetActor(builtin.StoragePowerActorAddr, spact); err != nil {
+		return nil, xerrors.Errorf("set storage market actor: %w", err)
+	}
+
+	// Create empty market actor
+	marketact, err := SetupStorageMarketActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup storage market actor: %w", err)
+	}
+	if err := state.SetActor(builtin.StorageMarketActorAddr, marketact); err != nil {
+		return nil, xerrors.Errorf("set market actor: %w", err)
+	}
+
+	// Create verified registry
+	verifact, err := SetupVerifiedRegistryActor(bs)
+	if err != nil {
+		return nil, xerrors.Errorf("setup storage market actor: %w", err)
+	}
+	if err := state.SetActor(builtin.VerifiedRegistryActorAddr, verifact); err != nil {
+		return nil, xerrors.Errorf("set market actor: %w", err)
+	}
+
+	// Setup burnt-funds
+	err = state.SetActor(builtin.BurntFundsActorAddr, &types.Actor{
+		Code:    builtin.AccountActorCodeID,
+		Balance: types.NewInt(0),
+		Head:    emptyobject,
+	})
+	if err != nil {
+		return nil, xerrors.Errorf("set burnt funds account actor: %w", err)
+	}
+
+	// Create accounts
+	for id, info := range template.Accounts {
+		if info.Type != genesis.TAccount {
+			return nil, xerrors.New("unsupported account type") // TODO: msigs
+		}
+
+		ida, err := address.NewIDAddress(uint64(AccountStart + id))
+		if err != nil {
+			return nil, err
+		}
+
+		var ainfo genesis.AccountMeta
+		if err := json.Unmarshal(info.Meta, &ainfo); err != nil {
+			return nil, xerrors.Errorf("unmarshaling account meta: %w", err)
+		}
+
+		st, err := cst.Put(ctx, &account.State{Address: ainfo.Owner})
+		if err != nil {
+			return nil, err
+		}
+
+		err = state.SetActor(ida, &types.Actor{
+			Code:    builtin.AccountActorCodeID,
+			Balance: info.Balance,
+			Head:    st,
+		})
+		if err != nil {
+			return nil, xerrors.Errorf("setting account from actmap: %w", err)
+		}
+	}
+
+	vregroot, err := address.NewIDAddress(80)
+	if err != nil {
+		return nil, err
+	}
+
+	vrst, err := cst.Put(ctx, &account.State{Address: RootVerifierAddr})
+	if err != nil {
+		return nil, err
+	}
+
+	err = state.SetActor(vregroot, &types.Actor{
+		Code:    builtin.AccountActorCodeID,
+		Balance: types.NewInt(0),
+		Head:    vrst,
+	})
+
+	if err != nil {
+		return nil, xerrors.Errorf("setting account from actmap: %w", err)
+	}
+
+	return state, nil
+}
+
+func VerifyPreSealedData(ctx context.Context, cs *store.ChainStore, stateroot cid.Cid, template genesis.Template) (cid.Cid, error) {
+	verifNeeds := make(map[address.Address]abi.PaddedPieceSize)
+	var sum abi.PaddedPieceSize
+	for _, m := range template.Miners {
+		for _, s := range m.Sectors {
+			amt := s.Deal.PieceSize
+			verifNeeds[s.Deal.Client] += amt
+			sum += amt
+		}
+	}
+
+	verifier, err := address.NewIDAddress(80)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	vm, err := vm.NewVM(stateroot, 0, &fakeRand{}, cs.Blockstore(), &fakedSigSyscalls{cs.VMSys()})
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("failed to create NewVM: %w", err)
+	}
+
+	_, err = doExecValue(ctx, vm, builtin.VerifiedRegistryActorAddr, RootVerifierAddr, types.NewInt(0), builtin.MethodsVerifiedRegistry.AddVerifier, mustEnc(&verifreg.AddVerifierParams{
+		Address:   verifier,
+		Allowance: abi.NewStoragePower(int64(sum)), // eh, close enough
+
+	}))
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("failed to failed to create verifier: %w", err)
+	}
+
+	for c, amt := range verifNeeds {
+		_, err := doExecValue(ctx, vm, builtin.VerifiedRegistryActorAddr, verifier, types.NewInt(0), builtin.MethodsVerifiedRegistry.AddVerifiedClient, mustEnc(&verifreg.AddVerifiedClientParams{
+			Address:   c,
+			Allowance: abi.NewStoragePower(int64(amt)),
+		}))
+		if err != nil {
+			return cid.Undef, xerrors.Errorf("failed to add verified client: %w", err)
+		}
+	}
+
+	return vm.Flush(ctx)
+}
+
+func MakeGenesisBlock(ctx context.Context, bs bstore.Blockstore, sys runtime.Syscalls, template genesis.Template) (*GenesisBootstrap, error) {
+	st, err := MakeInitialStateTree(ctx, bs, template)
+	if err != nil {
+		return nil, xerrors.Errorf("make initial state tree failed: %w", err)
+	}
+
+	stateroot, err := st.Flush(ctx)
+	if err != nil {
+		return nil, xerrors.Errorf("flush state tree failed: %w", err)
+	}
+
+	// temp chainstore
+	cs := store.NewChainStore(bs, datastore.NewMapDatastore(), sys)
+
+	// Verify PreSealed Data
+	stateroot, err = VerifyPreSealedData(ctx, cs, stateroot, template)
+	if err != nil {
+		return nil, xerrors.Errorf("failed to verify presealed data: %w", err)
+	}
+
+	stateroot, err = SetupStorageMiners(ctx, cs, stateroot, template.Miners)
+	if err != nil {
+		return nil, xerrors.Errorf("setup storage miners failed: %w", err)
+	}
+
+	cst := cbor.NewCborStore(bs)
+
+	emptyroot, err := amt.FromArray(ctx, cst, nil)
+	if err != nil {
+		return nil, xerrors.Errorf("amt build failed: %w", err)
+	}
+
+	mm := &types.MsgMeta{
+		BlsMessages:   emptyroot,
+		SecpkMessages: emptyroot,
+	}
+	mmb, err := mm.ToStorageBlock()
+	if err != nil {
+		return nil, xerrors.Errorf("serializing msgmeta failed: %w", err)
+	}
+	if err := bs.Put(mmb); err != nil {
+		return nil, xerrors.Errorf("putting msgmeta block to blockstore: %w", err)
+	}
+
+	log.Infof("Empty Genesis root: %s", emptyroot)
+
+	genesisticket := &types.Ticket{
+		VRFProof: []byte("vrf proof0000000vrf proof0000000"),
+	}
+
+	b := &types.BlockHeader{
+		Miner:                 builtin.SystemActorAddr,
+		Ticket:                genesisticket,
+		Parents:               []cid.Cid{},
+		Height:                0,
+		ParentWeight:          types.NewInt(0),
+		ParentStateRoot:       stateroot,
+		Messages:              mmb.Cid(),
+		ParentMessageReceipts: emptyroot,
+		BLSAggregate:          nil,
+		BlockSig:              nil,
+		Timestamp:             template.Timestamp,
+		ElectionProof:         new(types.ElectionProof),
+		BeaconEntries: []types.BeaconEntry{
+			{
+				Round: 0,
+				Data:  make([]byte, 32),
+			},
+		},
+	}
+
+	sb, err := b.ToStorageBlock()
+	if err != nil {
+		return nil, xerrors.Errorf("serializing block header failed: %w", err)
+	}
+
+	if err := bs.Put(sb); err != nil {
+		return nil, xerrors.Errorf("putting header to blockstore: %w", err)
+	}
+
+	return &GenesisBootstrap{
+		Genesis: b,
+	}, nil
+}
@@ -0,0 +1,263 @@
+package genesis
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"math/rand"
+
+	"github.com/ipfs/go-cid"
+	cbor "github.com/ipfs/go-ipld-cbor"
+	cbg "github.com/whyrusleeping/cbor-gen"
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/sector-storage/ffiwrapper"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/market"
+	"github.com/filecoin-project/specs-actors/actors/builtin/miner"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+	"github.com/filecoin-project/specs-actors/actors/runtime"
+
+	"github.com/filecoin-project/lotus/chain/state"
+	"github.com/filecoin-project/lotus/chain/store"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/chain/vm"
+	"github.com/filecoin-project/lotus/genesis"
+)
+
+func MinerAddress(genesisIndex uint64) address.Address {
+	maddr, err := address.NewIDAddress(MinerStart + genesisIndex)
+	if err != nil {
+		panic(err)
+	}
+
+	return maddr
+}
+
+type fakedSigSyscalls struct {
+	runtime.Syscalls
+}
+
+func (fss *fakedSigSyscalls) VerifySignature(signature crypto.Signature, signer address.Address, plaintext []byte) error {
+	return nil
+}
+
+func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sroot cid.Cid, miners []genesis.Miner) (cid.Cid, error) {
+	vm, err := vm.NewVM(sroot, 0, &fakeRand{}, cs.Blockstore(), &fakedSigSyscalls{cs.VMSys()})
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("failed to create NewVM: %w", err)
+	}
+
+	if len(miners) == 0 {
+		return cid.Undef, xerrors.New("no genesis miners")
+	}
+
+	for i, m := range miners {
+		// Create miner through power actor
+		i := i
+		m := m
+
+		spt, err := ffiwrapper.SealProofTypeFromSectorSize(m.SectorSize)
+		if err != nil {
+			return cid.Undef, err
+		}
+
+		var maddr address.Address
+		{
+			constructorParams := &power.CreateMinerParams{
+				Owner:         m.Worker,
+				Worker:        m.Worker,
+				Peer:          []byte(m.PeerId),
+				SealProofType: spt,
+			}
+
+			params := mustEnc(constructorParams)
+			rval, err := doExecValue(ctx, vm, builtin.StoragePowerActorAddr, m.Owner, m.PowerBalance, builtin.MethodsPower.CreateMiner, params)
+			if err != nil {
+				return cid.Undef, xerrors.Errorf("failed to create genesis miner: %w", err)
+			}
+
+			var ma power.CreateMinerReturn
+			if err := ma.UnmarshalCBOR(bytes.NewReader(rval)); err != nil {
+				return cid.Undef, xerrors.Errorf("unmarshaling CreateMinerReturn: %w", err)
+			}
+
+			expma := MinerAddress(uint64(i))
+			if ma.IDAddress != expma {
+				return cid.Undef, xerrors.Errorf("miner assigned wrong address: %s != %s", ma.IDAddress, expma)
+			}
+			maddr = ma.IDAddress
+		}
+
+		// Add market funds
+
+		{
+			params := mustEnc(&maddr)
+			_, err := doExecValue(ctx, vm, builtin.StorageMarketActorAddr, m.Worker, m.MarketBalance, builtin.MethodsMarket.AddBalance, params)
+			if err != nil {
+				return cid.Undef, xerrors.Errorf("failed to create genesis miner: %w", err)
+			}
+		}
+		{
+			params := mustEnc(&m.Worker)
+			_, err := doExecValue(ctx, vm, builtin.StorageMarketActorAddr, m.Worker, big.Zero(), builtin.MethodsMarket.AddBalance, params)
+			if err != nil {
+				return cid.Undef, xerrors.Errorf("failed to create genesis miner: %w", err)
+			}
+		}
+
+		// Publish preseal deals
+
+		var dealIDs []abi.DealID
+		{
+			publish := func(params *market.PublishStorageDealsParams) error {
+				fmt.Printf("publishing %d storage deals on miner %s with worker %s\n", len(params.Deals), params.Deals[0].Proposal.Provider, m.Worker)
+
+				ret, err := doExecValue(ctx, vm, builtin.StorageMarketActorAddr, m.Worker, big.Zero(), builtin.MethodsMarket.PublishStorageDeals, mustEnc(params))
+				if err != nil {
+					return xerrors.Errorf("failed to create genesis miner: %w", err)
+				}
+				var ids market.PublishStorageDealsReturn
+				if err := ids.UnmarshalCBOR(bytes.NewReader(ret)); err != nil {
+					return xerrors.Errorf("unmarsahling publishStorageDeals result: %w", err)
+				}
+
+				dealIDs = append(dealIDs, ids.IDs...)
+				return nil
+			}
+
+			params := &market.PublishStorageDealsParams{}
+			for _, preseal := range m.Sectors {
+				preseal.Deal.VerifiedDeal = true
+				params.Deals = append(params.Deals, market.ClientDealProposal{
+					Proposal:        preseal.Deal,
+					ClientSignature: crypto.Signature{Type: crypto.SigTypeBLS}, // TODO: do we want to sign these? Or do we want to fake signatures for genesis setup?
+				})
+
+				if len(params.Deals) == cbg.MaxLength {
+					if err := publish(params); err != nil {
+						return cid.Undef, err
+					}
+
+					params = &market.PublishStorageDealsParams{}
+				}
+			}
+
+			if len(params.Deals) > 0 {
+				if err := publish(params); err != nil {
+					return cid.Undef, err
+				}
+			}
+		}
+
+		// Commit sectors
+		for pi, preseal := range m.Sectors {
+			preseal := preseal
+			// TODO: Maybe check seal (Can just be snark inputs, doesn't go into the genesis file)
+
+			// check deals, get dealWeight
+			var dealWeight market.VerifyDealsOnSectorProveCommitReturn
+			{
+				params := &market.VerifyDealsOnSectorProveCommitParams{
+					DealIDs:      []abi.DealID{dealIDs[pi]},
+					SectorExpiry: preseal.Deal.EndEpoch,
+				}
+
+				ret, err := doExecValue(ctx, vm, builtin.StorageMarketActorAddr, maddr, big.Zero(), builtin.MethodsMarket.VerifyDealsOnSectorProveCommit, mustEnc(params))
+				if err != nil {
+					return cid.Undef, xerrors.Errorf("failed to verify preseal deals miner: %w", err)
+				}
+				if err := dealWeight.UnmarshalCBOR(bytes.NewReader(ret)); err != nil {
+					return cid.Undef, xerrors.Errorf("unmarshaling market onProveCommit result: %w", err)
+				}
+			}
+
+			// update power claims
+			{
+				err = vm.MutateState(ctx, builtin.StoragePowerActorAddr, func(cst cbor.IpldStore, st *power.State) error {
+					weight := &power.SectorStorageWeightDesc{
+						SectorSize:         m.SectorSize,
+						Duration:           preseal.Deal.Duration(),
+						DealWeight:         dealWeight.DealWeight,
+						VerifiedDealWeight: dealWeight.VerifiedDealWeight,
+					}
+
+					qapower := power.QAPowerForWeight(weight)
+
+					err := st.AddToClaim(&state.AdtStore{cst}, maddr, types.NewInt(uint64(weight.SectorSize)), qapower)
+					if err != nil {
+						return xerrors.Errorf("add to claim: %w", err)
+					}
+					fmt.Println("Added weight to claim: ", st.TotalRawBytePower, st.TotalQualityAdjPower)
+					return nil
+				})
+				if err != nil {
+					return cid.Undef, xerrors.Errorf("register power claim in power actor: %w", err)
+				}
+			}
+
+			// Put sectors to miner sector sets
+			{
+				newSectorInfo := &miner.SectorOnChainInfo{
+					Info: miner.SectorPreCommitInfo{
+						SealProof:     preseal.ProofType,
+						SectorNumber:  preseal.SectorID,
+						SealedCID:     preseal.CommR,
+						SealRandEpoch: 0,
+						DealIDs:       []abi.DealID{dealIDs[pi]},
+						Expiration:    preseal.Deal.EndEpoch,
+					},
+					ActivationEpoch:    0,
+					DealWeight:         dealWeight.DealWeight,
+					VerifiedDealWeight: dealWeight.VerifiedDealWeight,
+				}
+
+				err = vm.MutateState(ctx, maddr, func(cst cbor.IpldStore, st *miner.State) error {
+					store := &state.AdtStore{cst}
+
+					if err = st.PutSector(store, newSectorInfo); err != nil {
+						return xerrors.Errorf("failed to put sector: %v", err)
+					}
+
+					if err := st.AddNewSectors(newSectorInfo.Info.SectorNumber); err != nil {
+						return xerrors.Errorf("failed to add NewSector: %w", err)
+					}
+
+					return nil
+				})
+				if err != nil {
+					return cid.Cid{}, xerrors.Errorf("put to sset: %w", err)
+				}
+			}
+		}
+
+	}
+
+	// TODO: to avoid division by zero, we set the initial power actor power to 1, this adjusts that back down so the accounting is accurate.
+	err = vm.MutateState(ctx, builtin.StoragePowerActorAddr, func(cst cbor.IpldStore, st *power.State) error {
+		st.TotalQualityAdjPower = big.Sub(st.TotalQualityAdjPower, big.NewInt(1))
+		return nil
+	})
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("mutating state: %w", err)
+	}
+
+	c, err := vm.Flush(ctx)
+	if err != nil {
+		return cid.Undef, xerrors.Errorf("flushing vm: %w", err)
+	}
+	return c, nil
+}
+
+// TODO: copied from actors test harness, deduplicate or remove from here
+type fakeRand struct{}
+
+func (fr *fakeRand) GetRandomness(ctx context.Context, personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) ([]byte, error) {
+	out := make([]byte, 32)
+	_, _ = rand.New(rand.NewSource(int64(randEpoch))).Read(out)
+	return out, nil
+}
@@ -0,0 +1,29 @@
+package genesis
+
+import (
+	"context"
+	"github.com/filecoin-project/specs-actors/actors/builtin/system"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+)
+
+func SetupSystemActor(bs bstore.Blockstore) (*types.Actor, error) {
+	var st system.State
+
+	cst := cbor.NewCborStore(bs)
+
+	statecid, err := cst.Put(context.TODO(), &st)
+	if err != nil {
+		return nil, err
+	}
+
+	act := &types.Actor{
+		Code: builtin.SystemActorCodeID,
+		Head: statecid,
+	}
+
+	return act, nil
+}
@@ -0,0 +1,74 @@
+package genesis
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+
+	init_ "github.com/filecoin-project/specs-actors/actors/builtin/init"
+	"github.com/ipfs/go-hamt-ipld"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/genesis"
+)
+
+func SetupInitActor(bs bstore.Blockstore, netname string, initialActors []genesis.Actor) (*types.Actor, error) {
+	if len(initialActors) > MaxAccounts {
+		return nil, xerrors.New("too many initial actors")
+	}
+
+	var ias init_.State
+	ias.NextID = MinerStart
+	ias.NetworkName = netname
+
+	cst := cbor.NewCborStore(bs)
+	amap := hamt.NewNode(cst, hamt.UseTreeBitWidth(5)) // TODO: use spec adt map
+
+	for i, a := range initialActors {
+		if a.Type != genesis.TAccount {
+			return nil, xerrors.Errorf("unsupported account type: %s", a.Type) // TODO: Support msig (skip here)
+		}
+
+		var ainfo genesis.AccountMeta
+		if err := json.Unmarshal(a.Meta, &ainfo); err != nil {
+			return nil, xerrors.Errorf("unmarshaling account meta: %w", err)
+		}
+
+		fmt.Printf("init set %s t0%d\n", ainfo.Owner, AccountStart+uint64(i))
+
+		if err := amap.Set(context.TODO(), string(ainfo.Owner.Bytes()), AccountStart+uint64(i)); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := amap.Set(context.TODO(), string(RootVerifierAddr.Bytes()), 80); err != nil {
+		return nil, err
+	}
+
+	if err := amap.Flush(context.TODO()); err != nil {
+		return nil, err
+	}
+	amapcid, err := cst.Put(context.TODO(), amap)
+	if err != nil {
+		return nil, err
+	}
+
+	ias.AddressMap = amapcid
+
+	statecid, err := cst.Put(context.TODO(), &ias)
+	if err != nil {
+		return nil, err
+	}
+
+	act := &types.Actor{
+		Code: builtin.InitActorCodeID,
+		Head: statecid,
+	}
+
+	return act, nil
+}
@@ -0,0 +1,30 @@
+package genesis
+
+import (
+	"context"
+
+	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/reward"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+)
+
+func SetupRewardActor(bs bstore.Blockstore) (*types.Actor, error) {
+	cst := cbor.NewCborStore(bs)
+
+	st := reward.ConstructState()
+	st.LastPerEpochReward = types.FromFil(100)
+
+	hcid, err := cst.Put(context.TODO(), st)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Actor{
+		Code:    builtin.RewardActorCodeID,
+		Balance: types.BigInt{Int: build.InitialRewardBalance},
+		Head:    hcid,
+	}, nil
+}
@@ -0,0 +1,29 @@
+package genesis
+
+import (
+	"context"
+
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/cron"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+func SetupCronActor(bs bstore.Blockstore) (*types.Actor, error) {
+	cst := cbor.NewCborStore(bs)
+	cas := cron.ConstructState(cron.BuiltInEntries())
+
+	stcid, err := cst.Put(context.TODO(), cas)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Actor{
+		Code:    builtin.CronActorCodeID,
+		Head:    stcid,
+		Nonce:   0,
+		Balance: types.NewInt(0),
+	}, nil
+}
@@ -0,0 +1,47 @@
+package genesis
+
+import (
+	"context"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+	"github.com/filecoin-project/specs-actors/actors/builtin/power"
+	"github.com/ipfs/go-hamt-ipld"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+func SetupStoragePowerActor(bs bstore.Blockstore) (*types.Actor, error) {
+	ctx := context.TODO()
+	cst := cbor.NewCborStore(bs)
+	nd := hamt.NewNode(cst, hamt.UseTreeBitWidth(5))
+	emptyhamt, err := cst.Put(ctx, nd)
+	if err != nil {
+		return nil, err
+	}
+
+	sms := &power.State{
+		TotalRawBytePower:        big.NewInt(0),
+		TotalQualityAdjPower:     big.NewInt(1), // TODO: has to be 1 initially to avoid div by zero. Kinda annoying, should find a way to fix
+		TotalPledgeCollateral:    big.NewInt(0),
+		MinerCount:               0,
+		CronEventQueue:           emptyhamt,
+		LastEpochTick:            0,
+		Claims:                   emptyhamt,
+		NumMinersMeetingMinPower: 0,
+	}
+
+	stcid, err := cst.Put(ctx, sms)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Actor{
+		Code:    builtin.StoragePowerActorCodeID,
+		Head:    stcid,
+		Nonce:   0,
+		Balance: types.NewInt(0),
+	}, nil
+}
@@ -0,0 +1,42 @@
+package genesis
+
+import (
+	"context"
+	"github.com/ipfs/go-hamt-ipld"
+
+	"github.com/filecoin-project/go-amt-ipld/v2"
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/market"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+func SetupStorageMarketActor(bs bstore.Blockstore) (*types.Actor, error) {
+	cst := cbor.NewCborStore(bs)
+
+	a, err := amt.NewAMT(cst).Flush(context.TODO())
+	if err != nil {
+		return nil, err
+	}
+	h, err := cst.Put(context.TODO(), hamt.NewNode(cst, hamt.UseTreeBitWidth(5)))
+	if err != nil {
+		return nil, err
+	}
+
+	sms := market.ConstructState(a, h, h)
+
+	stcid, err := cst.Put(context.TODO(), sms)
+	if err != nil {
+		return nil, err
+	}
+
+	act := &types.Actor{
+		Code:    builtin.StorageMarketActorCodeID,
+		Head:    stcid,
+		Balance: types.NewInt(0),
+	}
+
+	return act, nil
+}
@@ -0,0 +1,59 @@
+package genesis
+
+import (
+	"context"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/ipfs/go-hamt-ipld"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	cbor "github.com/ipfs/go-ipld-cbor"
+
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+	"github.com/filecoin-project/specs-actors/actors/builtin/verifreg"
+
+	"github.com/filecoin-project/lotus/chain/types"
+)
+
+var RootVerifierAddr address.Address
+
+var RootVerifierID address.Address
+
+func init() {
+	k, err := address.NewFromString("t3qfoulel6fy6gn3hjmbhpdpf6fs5aqjb5fkurhtwvgssizq4jey5nw4ptq5up6h7jk7frdvvobv52qzmgjinq")
+	if err != nil {
+		panic(err)
+	}
+
+	RootVerifierAddr = k
+
+	idk, err := address.NewFromString("t080")
+	if err != nil {
+		panic(err)
+	}
+
+	RootVerifierID = idk
+}
+
+func SetupVerifiedRegistryActor(bs bstore.Blockstore) (*types.Actor, error) {
+	cst := cbor.NewCborStore(bs)
+
+	h, err := cst.Put(context.TODO(), hamt.NewNode(cst, hamt.UseTreeBitWidth(5)))
+	if err != nil {
+		return nil, err
+	}
+
+	sms := verifreg.ConstructState(h, RootVerifierID)
+
+	stcid, err := cst.Put(context.TODO(), sms)
+	if err != nil {
+		return nil, err
+	}
+
+	act := &types.Actor{
+		Code:    builtin.VerifiedRegistryActorCodeID,
+		Head:    stcid,
+		Balance: types.NewInt(0),
+	}
+
+	return act, nil
+}
@@ -0,0 +1,53 @@
+package genesis
+
+import (
+	"context"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/specs-actors/actors/abi"
+	cbg "github.com/whyrusleeping/cbor-gen"
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/lotus/chain/actors"
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/chain/vm"
+)
+
+func mustEnc(i cbg.CBORMarshaler) []byte {
+	enc, err := actors.SerializeParams(i)
+	if err != nil {
+		panic(err) // ok
+	}
+	return enc
+}
+
+func doExec(ctx context.Context, vm *vm.VM, to, from address.Address, method abi.MethodNum, params []byte) ([]byte, error) {
+	return doExecValue(ctx, vm, to, from, types.NewInt(0), method, params)
+}
+
+func doExecValue(ctx context.Context, vm *vm.VM, to, from address.Address, value types.BigInt, method abi.MethodNum, params []byte) ([]byte, error) {
+	act, err := vm.StateTree().GetActor(from)
+	if err != nil {
+		return nil, xerrors.Errorf("doExec failed to get from actor: %w", err)
+	}
+
+	ret, err := vm.ApplyImplicitMessage(ctx, &types.Message{
+		To:       to,
+		From:     from,
+		Method:   method,
+		Params:   params,
+		GasLimit: 1_000_000_000_000_000,
+		GasPrice: types.NewInt(0),
+		Value:    value,
+		Nonce:    act.Nonce,
+	})
+	if err != nil {
+		return nil, xerrors.Errorf("doExec apply message failed: %w", err)
+	}
+
+	if ret.ExitCode != 0 {
+		return nil, xerrors.Errorf("failed to call method: %w", ret.ActorErr)
+	}
+
+	return ret.Return, nil
+}
@@ -4,13 +4,14 @@ import (
 	"context"

 	bls "github.com/filecoin-project/filecoin-ffi"
-	amt "github.com/filecoin-project/go-amt-ipld"
+	amt "github.com/filecoin-project/go-amt-ipld/v2"
+	"github.com/filecoin-project/specs-actors/actors/crypto"
 	cid "github.com/ipfs/go-cid"
-	hamt "github.com/ipfs/go-hamt-ipld"
+	cbor "github.com/ipfs/go-ipld-cbor"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	"golang.org/x/xerrors"

-	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/chain/state"
 	"github.com/filecoin-project/lotus/chain/stmgr"
 	"github.com/filecoin-project/lotus/chain/types"
@@ -18,24 +19,33 @@ import (
 	"github.com/filecoin-project/lotus/chain/wallet"
 )

-func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wallet, miner address.Address, parents *types.TipSet, ticket *types.Ticket, proof *types.EPostProof, msgs []*types.SignedMessage, height, timestamp uint64) (*types.FullBlock, error) {
-	st, recpts, err := sm.TipSetState(ctx, parents)
+func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wallet, bt *api.BlockTemplate) (*types.FullBlock, error) {
+
+	pts, err := sm.ChainStore().LoadTipSet(bt.Parents)
+	if err != nil {
+		return nil, xerrors.Errorf("failed to load parent tipset: %w", err)
+	}
+
+	st, recpts, err := sm.TipSetState(ctx, pts)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to load tipset state: %w", err)
 	}

-	worker, err := stmgr.GetMinerWorkerRaw(ctx, sm, st, miner)
+	worker, err := stmgr.GetMinerWorkerRaw(ctx, sm, st, bt.Miner)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to get miner worker: %w", err)
 	}

 	next := &types.BlockHeader{
-		Miner:                 miner,
-		Parents:               parents.Cids(),
-		Ticket:                ticket,
-		Height:                height,
-		Timestamp:             timestamp,
-		EPostProof:            *proof,
+		Miner:         bt.Miner,
+		Parents:       bt.Parents.Cids(),
+		Ticket:        bt.Ticket,
+		ElectionProof: bt.Eproof,
+
+		BeaconEntries:         bt.BeaconValues,
+		Height:                bt.Epoch,
+		Timestamp:             bt.Timestamp,
+		WinPoStProof:          bt.WinningPoStProof,
 		ParentStateRoot:       st,
 		ParentMessageReceipts: recpts,
 	}
@@ -44,9 +54,9 @@ func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wal
 	var secpkMessages []*types.SignedMessage

 	var blsMsgCids, secpkMsgCids []cid.Cid
-	var blsSigs []types.Signature
-	for _, msg := range msgs {
-		if msg.Signature.TypeCode() == types.IKTBLS {
+	var blsSigs []crypto.Signature
+	for _, msg := range bt.Messages {
+		if msg.Signature.Type == crypto.SigTypeBLS {
 			blsSigs = append(blsSigs, msg.Signature)
 			blsMessages = append(blsMessages, &msg.Message)

@@ -68,17 +78,17 @@ func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wal
 		}
 	}

-	bs := amt.WrapBlockstore(sm.ChainStore().Blockstore())
-	blsmsgroot, err := amt.FromArray(bs, toIfArr(blsMsgCids))
+	bs := cbor.NewCborStore(sm.ChainStore().Blockstore())
+	blsmsgroot, err := amt.FromArray(ctx, bs, toIfArr(blsMsgCids))
 	if err != nil {
 		return nil, xerrors.Errorf("building bls amt: %w", err)
 	}
-	secpkmsgroot, err := amt.FromArray(bs, toIfArr(secpkMsgCids))
+	secpkmsgroot, err := amt.FromArray(ctx, bs, toIfArr(secpkMsgCids))
 	if err != nil {
 		return nil, xerrors.Errorf("building secpk amt: %w", err)
 	}

-	mmcid, err := bs.Put(&types.MsgMeta{
+	mmcid, err := bs.Put(ctx, &types.MsgMeta{
 		BlsMessages:   blsmsgroot,
 		SecpkMessages: secpkmsgroot,
 	})
@@ -93,13 +103,13 @@ func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wal
 	}

 	next.BLSAggregate = aggSig
-	pweight, err := sm.ChainStore().Weight(ctx, parents)
+	pweight, err := sm.ChainStore().Weight(ctx, pts)
 	if err != nil {
 		return nil, err
 	}
 	next.ParentWeight = pweight

-	cst := hamt.CSTFromBstore(sm.ChainStore().Blockstore())
+	cst := cbor.NewCborStore(sm.ChainStore().Blockstore())
 	tree, err := state.LoadStateTree(cst, st)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to load state tree: %w", err)
@@ -131,7 +141,7 @@ func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w *wallet.Wal
 	return fullBlock, nil
 }

-func aggregateSignatures(sigs []types.Signature) (types.Signature, error) {
+func aggregateSignatures(sigs []crypto.Signature) (*crypto.Signature, error) {
 	var blsSigs []bls.Signature
 	for _, s := range sigs {
 		var bsig bls.Signature
@@ -140,8 +150,19 @@ func aggregateSignatures(sigs []types.Signature) (types.Signature, error) {
 	}

 	aggSig := bls.Aggregate(blsSigs)
-	return types.Signature{
-		Type: types.KTBLS,
+	if aggSig == nil {
+		if len(sigs) > 0 {
+			return nil, xerrors.Errorf("bls.Aggregate returned nil with %d signatures", len(sigs))
+		}
+
+		return &crypto.Signature{
+			Type: crypto.SigTypeBLS,
+			Data: new(bls.Signature)[:],
+		}, nil
+	}
+
+	return &crypto.Signature{
+		Type: crypto.SigTypeBLS,
 		Data: aggSig[:],
 	}, nil
 }
--- a/Show More
+++ b/Show More