diff --git a/api/api_full.go b/api/api_full.go
index 76a033ae8..ed3418852 100644
--- a/api/api_full.go
+++ b/api/api_full.go
@@ -136,7 +136,7 @@ type FullNode interface {
 
 	MsigGetAvailableBalance(context.Context, address.Address, types.TipSetKey) (types.BigInt, error)
 
-	MarketEnsureAvailable(context.Context, address.Address, types.BigInt) error
+	MarketEnsureAvailable(context.Context, address.Address, address.Address, types.BigInt) error
 	// MarketFreeBalance
 
 	PaychGet(ctx context.Context, from, to address.Address, ensureFunds types.BigInt) (*ChannelInfo, error)
diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index 09aa89a51..7d5e0ab44 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -132,7 +132,7 @@ type FullNodeStruct struct {
 
 		MsigGetAvailableBalance func(context.Context, address.Address, types.TipSetKey) (types.BigInt, error) `perm:"read"`
 
-		MarketEnsureAvailable func(context.Context, address.Address, types.BigInt) error `perm:"sign"`
+		MarketEnsureAvailable func(context.Context, address.Address, address.Address, types.BigInt) error `perm:"sign"`
 
 		PaychGet                   func(ctx context.Context, from, to address.Address, ensureFunds types.BigInt) (*api.ChannelInfo, error)   `perm:"sign"`
 		PaychList                  func(context.Context) ([]address.Address, error)                                                          `perm:"read"`
@@ -519,8 +519,8 @@ func (c *FullNodeStruct) MsigGetAvailableBalance(ctx context.Context, a address.
 	return c.Internal.MsigGetAvailableBalance(ctx, a, tsk)
 }
 
-func (c *FullNodeStruct) MarketEnsureAvailable(ctx context.Context, addr address.Address, amt types.BigInt) error {
-	return c.Internal.MarketEnsureAvailable(ctx, addr, amt)
+func (c *FullNodeStruct) MarketEnsureAvailable(ctx context.Context, addr, wallet address.Address, amt types.BigInt) error {
+	return c.Internal.MarketEnsureAvailable(ctx, addr, wallet, amt)
 }
 
 func (c *FullNodeStruct) PaychGet(ctx context.Context, from, to address.Address, ensureFunds types.BigInt) (*api.ChannelInfo, error) {
diff --git a/chain/events/events_called.go b/chain/events/events_called.go
index 3b1d86123..cbdae4483 100644
--- a/chain/events/events_called.go
+++ b/chain/events/events_called.go
@@ -130,7 +130,7 @@ func (e *calledEvents) checkNewCalls(ts *types.TipSet) {
 			for _, matchFn := range matchFns {
 				ok, err := matchFn(msg)
 				if err != nil {
-					log.Warnf("event matcher failed: %s", err)
+					log.Errorf("event matcher failed: %s", err)
 					continue
 				}
 				matched = ok
diff --git a/chain/gen/gen.go b/chain/gen/gen.go
index 1f3b890c3..1fecbacba 100644
--- a/chain/gen/gen.go
+++ b/chain/gen/gen.go
@@ -574,9 +574,13 @@ func IsRoundWinner(ctx context.Context, ts *types.TipSet, round int64, miner add
 
 	var sinfos []abi.SectorInfo
 	for _, s := range pset {
+		if s.Info.Info.RegisteredProof == 0 {
+			return nil, xerrors.Errorf("sector %d in proving set had registered type of zero", s.ID)
+		}
 		sinfos = append(sinfos, abi.SectorInfo{
-			SectorNumber: s.ID,
-			SealedCID:    s.Info.Info.SealedCID,
+			SectorNumber:    s.ID,
+			SealedCID:       s.Info.Info.SealedCID,
+			RegisteredProof: s.Info.Info.RegisteredProof,
 		})
 	}
 
diff --git a/chain/gen/genesis/miners.go b/chain/gen/genesis/miners.go
index 70ae75ec4..0fb2f5741 100644
--- a/chain/gen/genesis/miners.go
+++ b/chain/gen/genesis/miners.go
@@ -201,11 +201,12 @@ func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sroot cid.Cid
 			{
 				newSectorInfo := &miner.SectorOnChainInfo{
 					Info: miner.SectorPreCommitInfo{
-						SectorNumber:  preseal.SectorID,
-						SealedCID:     preseal.CommR,
-						SealRandEpoch: 0,
-						DealIDs:       []abi.DealID{dealIDs[pi]},
-						Expiration:    preseal.Deal.EndEpoch,
+						RegisteredProof: preseal.ProofType,
+						SectorNumber:    preseal.SectorID,
+						SealedCID:       preseal.CommR,
+						SealRandEpoch:   0,
+						DealIDs:         []abi.DealID{dealIDs[pi]},
+						Expiration:      preseal.Deal.EndEpoch,
 					},
 					ActivationEpoch:   0,
 					DealWeight:        dealWeight,
diff --git a/chain/market/fundmgr.go b/chain/market/fundmgr.go
index e43dbfa79..76f0c795c 100644
--- a/chain/market/fundmgr.go
+++ b/chain/market/fundmgr.go
@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/filecoin-project/specs-actors/actors/builtin"
+	logging "github.com/ipfs/go-log"
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-address"
@@ -14,6 +15,8 @@ import (
 	"github.com/filecoin-project/lotus/node/impl/full"
 )
 
+var log = logging.Logger("market_adapter")
+
 type FundMgr struct {
 	sm    *stmgr.StateManager
 	mpool full.MpoolAPI
@@ -31,7 +34,7 @@ func NewFundMgr(sm *stmgr.StateManager, mpool full.MpoolAPI) *FundMgr {
 	}
 }
 
-func (fm *FundMgr) EnsureAvailable(ctx context.Context, addr address.Address, amt types.BigInt) error {
+func (fm *FundMgr) EnsureAvailable(ctx context.Context, addr, wallet address.Address, amt types.BigInt) error {
 	fm.lk.Lock()
 	avail, ok := fm.available[addr]
 	if !ok {
@@ -64,7 +67,7 @@ func (fm *FundMgr) EnsureAvailable(ctx context.Context, addr address.Address, am
 
 	smsg, err := fm.mpool.MpoolPushMessage(ctx, &types.Message{
 		To:       builtin.StorageMarketActorAddr,
-		From:     addr,
+		From:     wallet,
 		Value:    toAdd,
 		GasPrice: types.NewInt(0),
 		GasLimit: types.NewInt(1000000),
@@ -77,7 +80,7 @@ func (fm *FundMgr) EnsureAvailable(ctx context.Context, addr address.Address, am
 
 	_, r, err := fm.sm.WaitForMessage(ctx, smsg.Cid())
 	if err != nil {
-		return err
+		return xerrors.Errorf("failed waiting for market AddBalance message: %w", err)
 	}
 
 	if r.ExitCode != 0 {
diff --git a/chain/stmgr/forks_test.go b/chain/stmgr/forks_test.go
index 99770c01c..a61752616 100644
--- a/chain/stmgr/forks_test.go
+++ b/chain/stmgr/forks_test.go
@@ -12,6 +12,7 @@ import (
 	init_ "github.com/filecoin-project/specs-actors/actors/builtin/init"
 	"github.com/filecoin-project/specs-actors/actors/runtime"
 	"github.com/filecoin-project/specs-actors/actors/util/adt"
+	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/actors"
@@ -57,7 +58,7 @@ func (tas *testActorState) UnmarshalCBOR(r io.Reader) error {
 		return err
 	}
 	if t != cbg.MajUnsignedInt {
-		return fmt.Errorf("wrong type in test actor state")
+		return fmt.Errorf("wrong type in test actor state (got %d)", t)
 	}
 	tas.HasUpgraded = v
 	return nil
@@ -70,38 +71,29 @@ func (ta *testActor) Exports() []interface{} {
 	}
 }
 
-func (ta *testActor) Constructor(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
-	c, err := vmctx.Storage().Put(&testActorState{11})
-	if err != nil {
-		return nil, err
-	}
-	empty, err := vmctx.Storage().Put(&adt.EmptyValue{})
-	if err != nil {
-		return nil, err
-	}
+func (ta *testActor) Constructor(rt runtime.Runtime, params *adt.EmptyValue) *adt.EmptyValue {
 
-	fmt.Println("NEW ACTOR ADDRESS IS: ", vmctx.Message().To.String())
+	rt.State().Create(&testActorState{11})
+	fmt.Println("NEW ACTOR ADDRESS IS: ", rt.Message().Receiver())
 
-	return nil, vmctx.Storage().Commit(empty, c)
+	return &adt.EmptyValue{}
 }
 
-func (ta *testActor) TestMethod(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, aerrors.ActorError) {
+func (ta *testActor) TestMethod(rt runtime.Runtime, params *adt.EmptyValue) *adt.EmptyValue {
 	var st testActorState
-	if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &st); err != nil {
-		return nil, err
-	}
+	rt.State().Readonly(&st)
 
-	if vmctx.BlockHeight() > testForkHeight {
+	if rt.CurrEpoch() > testForkHeight {
 		if st.HasUpgraded != 55 {
-			return nil, aerrors.Fatal("fork updating applied in wrong order")
+			panic(aerrors.Fatal("fork updating applied in wrong order"))
 		}
 	} else {
 		if st.HasUpgraded != 11 {
-			return nil, aerrors.Fatal("fork updating happened too early")
+			panic(aerrors.Fatal("fork updating happened too early"))
 		}
 	}
 
-	return nil, nil
+	return &adt.EmptyValue{}
 }
 
 func TestForkHeightTriggers(t *testing.T) {
@@ -125,7 +117,7 @@ func TestForkHeightTriggers(t *testing.T) {
 	}
 
 	// predicting the address here... may break if other assumptions change
-	taddr, err := address.NewIDAddress(1000)
+	taddr, err := address.NewIDAddress(1002)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -144,7 +136,7 @@ func TestForkHeightTriggers(t *testing.T) {
 
 		var tas testActorState
 		if err := cst.Get(ctx, act.Head, &tas); err != nil {
-			return cid.Undef, err
+			return cid.Undef, xerrors.Errorf("in fork handler, failed to run get: %w", err)
 		}
 
 		tas.HasUpgraded = 55
diff --git a/chain/store/store.go b/chain/store/store.go
index ff40b6da1..ed86b1727 100644
--- a/chain/store/store.go
+++ b/chain/store/store.go
@@ -5,11 +5,12 @@ import (
 	"context"
 	"encoding/binary"
 	"encoding/json"
-	"github.com/filecoin-project/specs-actors/actors/crypto"
-	"github.com/minio/blake2b-simd"
 	"io"
 	"sync"
 
+	"github.com/filecoin-project/specs-actors/actors/crypto"
+	"github.com/minio/blake2b-simd"
+
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/filecoin-project/specs-actors/actors/runtime"
@@ -890,12 +891,12 @@ func (cs *ChainStore) TryFillTipSet(ts *types.TipSet) (*FullTipSet, error) {
 }
 
 func drawRandomness(t *types.Ticket, pers crypto.DomainSeparationTag, round int64, entropy []byte) ([]byte, error) {
-	// TODO: Make this spec compliant
 	h := blake2b.New256()
 	if err := binary.Write(h, binary.BigEndian, int64(pers)); err != nil {
 		return nil, xerrors.Errorf("deriving randomness: %w", err)
 	}
-	h.Write(t.VRFProof)
+	VRFDigest := blake2b.Sum256(t.VRFProof)
+	h.Write(VRFDigest[:])
 	if err := binary.Write(h, binary.BigEndian, round); err != nil {
 		return nil, xerrors.Errorf("deriving randomness: %w", err)
 	}
@@ -909,9 +910,11 @@ func (cs *ChainStore) GetRandomness(ctx context.Context, blks []cid.Cid, pers cr
 	defer span.End()
 	span.AddAttributes(trace.Int64Attribute("round", round))
 
-	defer func() {
-		log.Infof("getRand %v %d %d %x -> %x", blks, pers, round, entropy, out)
-	}()
+	/*
+		defer func() {
+			log.Infof("getRand %v %d %d %x -> %x", blks, pers, round, entropy, out)
+		}()
+	*/
 
 	for {
 		nts, err := cs.LoadTipSet(types.NewTipSetKey(blks...))
@@ -921,25 +924,12 @@ func (cs *ChainStore) GetRandomness(ctx context.Context, blks []cid.Cid, pers cr
 
 		mtb := nts.MinTicketBlock()
 
-		if int64(nts.Height()) <= round {
+		// if at (or just past -- for null epochs) appropriate epoch
+		// or at genesis (works for negative epochs)
+		if int64(nts.Height()) <= round || mtb.Height == 0 {
 			return drawRandomness(nts.MinTicketBlock().Ticket, pers, round, entropy)
 		}
 
-		// special case for lookback behind genesis block
-		// TODO(spec): this is not in the spec, need to sync that
-		if mtb.Height == 0 {
-
-			// round is negative
-			thash, err := drawRandomness(mtb.Ticket, pers, round*-1, entropy)
-			if err != nil {
-				return nil, err
-			}
-
-			// for negative lookbacks, just use the hash of the positive tickethash value
-			h := blake2b.Sum256(thash)
-			return h[:], nil
-		}
-
 		blks = mtb.Parents
 	}
 }
diff --git a/chain/types/tipset.go b/chain/types/tipset.go
index a92b27fcf..86e82032c 100644
--- a/chain/types/tipset.go
+++ b/chain/types/tipset.go
@@ -10,6 +10,7 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/ipfs/go-cid"
 	logging "github.com/ipfs/go-log/v2"
+	"github.com/minio/blake2b-simd"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	"golang.org/x/xerrors"
 )
@@ -170,7 +171,9 @@ func (ts *TipSet) Equals(ots *TipSet) bool {
 }
 
 func (t *Ticket) Less(o *Ticket) bool {
-	return bytes.Compare(t.VRFProof, o.VRFProof) < 0
+	tDigest := blake2b.Sum256(t.VRFProof)
+	oDigest := blake2b.Sum256(o.VRFProof)
+	return bytes.Compare(tDigest[:], oDigest[:]) < 0
 }
 
 func (ts *TipSet) MinTicket() *Ticket {
diff --git a/chain/vm/invoker.go b/chain/vm/invoker.go
index 70a7011e5..df5ec704e 100644
--- a/chain/vm/invoker.go
+++ b/chain/vm/invoker.go
@@ -5,7 +5,6 @@ import (
 	"encoding/hex"
 	"fmt"
 	"reflect"
-	"strings"
 
 	"github.com/ipfs/go-cid"
 	cbg "github.com/whyrusleeping/cbor-gen"
@@ -89,17 +88,7 @@ type Invokee interface {
 var tVMContext = reflect.TypeOf((*types.VMContext)(nil)).Elem()
 var tAError = reflect.TypeOf((*aerrors.ActorError)(nil)).Elem()
 
-func (i *invoker) transform(instance Invokee) (nativeCode, error) {
-	itype := reflect.TypeOf(instance)
-	if strings.Contains(itype.PkgPath(), "github.com/filecoin-project/specs-actors/") {
-		return i.transformSpec(instance)
-	} else {
-		return i.transformLotus(instance)
-	}
-
-}
-
-func (*invoker) transformSpec(instance Invokee) (nativeCode, error) {
+func (*invoker) transform(instance Invokee) (nativeCode, error) {
 	itype := reflect.TypeOf(instance)
 	exports := instance.Exports()
 	for i, m := range exports {
@@ -178,81 +167,6 @@ func (*invoker) transformSpec(instance Invokee) (nativeCode, error) {
 	return code, nil
 }
 
-func (*invoker) transformLotus(instance Invokee) (nativeCode, error) {
-	itype := reflect.TypeOf(instance)
-	exports := instance.Exports()
-	for i, m := range exports {
-		i := i
-		newErr := func(format string, args ...interface{}) error {
-			str := fmt.Sprintf(format, args...)
-			return fmt.Errorf("transform(%s) export(%d): %s", itype.Name(), i, str)
-		}
-		if m == nil {
-			continue
-		}
-		meth := reflect.ValueOf(m)
-		t := meth.Type()
-		if t.Kind() != reflect.Func {
-			return nil, newErr("is not a function")
-		}
-		if t.NumIn() != 3 {
-			return nil, newErr("wrong number of inputs should be: " +
-				"*types.Actor, *VMContext, <type of parameter>")
-		}
-		if t.In(0) != reflect.TypeOf(&types.Actor{}) {
-			return nil, newErr("first arguemnt should be *types.Actor")
-		}
-		if t.In(1) != tVMContext {
-			return nil, newErr("second argument should be types.VMContext")
-		}
-
-		if t.In(2).Kind() != reflect.Ptr {
-			return nil, newErr("parameter has to be a pointer to parameter, is: %s",
-				t.In(2).Kind())
-		}
-
-		if t.NumOut() != 2 {
-			return nil, newErr("wrong number of outputs should be: " +
-				"(InvokeRet, error)")
-		}
-		if t.Out(0) != reflect.TypeOf([]byte{}) {
-			return nil, newErr("first output should be slice of bytes")
-		}
-		if !t.Out(1).Implements(tAError) {
-			return nil, newErr("second output should be ActorError type")
-		}
-
-	}
-	code := make(nativeCode, len(exports))
-	for id, m := range exports {
-		meth := reflect.ValueOf(m)
-		code[id] = reflect.MakeFunc(reflect.TypeOf((invokeFunc)(nil)),
-			func(in []reflect.Value) []reflect.Value {
-				paramT := meth.Type().In(2).Elem()
-				param := reflect.New(paramT)
-
-				inBytes := in[2].Interface().([]byte)
-				if len(inBytes) > 0 {
-					if err := DecodeParams(inBytes, param.Interface()); err != nil {
-						aerr := aerrors.Absorb(err, 1, "failed to decode parameters")
-						return []reflect.Value{
-							reflect.ValueOf([]byte{}),
-							// Below is a hack, fixed in Go 1.13
-							// https://git.io/fjXU6
-							reflect.ValueOf(&aerr).Elem(),
-						}
-					}
-				}
-
-				return meth.Call([]reflect.Value{
-					in[0], in[1], param,
-				})
-			}).Interface().(invokeFunc)
-
-	}
-	return code, nil
-}
-
 func DecodeParams(b []byte, out interface{}) error {
 	um, ok := out.(cbg.CBORUnmarshaler)
 	if !ok {
diff --git a/chain/vm/spec_shim.go b/chain/vm/spec_shim.go
index 1cadde826..c5f6f1b06 100644
--- a/chain/vm/spec_shim.go
+++ b/chain/vm/spec_shim.go
@@ -257,6 +257,7 @@ func (rs *runtimeShim) Send(to address.Address, method abi.MethodNum, m vmr.CBOR
 		if err.IsFatal() {
 			panic(err)
 		}
+		log.Warnf("vmctx send failed: to: %s, method: %d: ret: %d, err: %s", to, method, ret, err)
 		return nil, exitcode.ExitCode(err.RetCode())
 	}
 	return &dumbWrapperType{ret}, 0
diff --git a/chain/vm/syscalls.go b/chain/vm/syscalls.go
index 63292b348..8d22d74dd 100644
--- a/chain/vm/syscalls.go
+++ b/chain/vm/syscalls.go
@@ -76,7 +76,6 @@ func (ss *syscallShim) VerifyConsensusFault(a, b []byte) error {
 }
 
 func (ss *syscallShim) VerifyPoSt(proof abi.PoStVerifyInfo) error {
-	//VerifyFallbackPost(ctx context.Context, sectorSize abi.SectorSize, sectorInfo SortedPublicSectorInfo, challengeSeed []byte, proof []byte, candidates []EPostCandidate, proverID address.Address, faults uint64) (bool, error)
 	ok, err := ss.verifier.VerifyFallbackPost(context.TODO(), proof)
 	if err != nil {
 		return err
@@ -105,9 +104,6 @@ func (ss *syscallShim) VerifySeal(info abi.SealVerifyInfo) error {
 	//_, span := trace.StartSpan(ctx, "ValidatePoRep")
 	//defer span.End()
 
-	commD := cidToCommD(info.UnsealedCID)
-	commR := cidToCommR(info.OnChain.SealedCID)
-
 	miner, err := address.NewIDAddress(uint64(info.Miner))
 	if err != nil {
 		return xerrors.Errorf("weirdly failed to construct address: %w", err)
@@ -117,7 +113,7 @@ func (ss *syscallShim) VerifySeal(info abi.SealVerifyInfo) error {
 	proof := []byte(info.OnChain.Proof)
 	seed := []byte(info.InteractiveRandomness)
 
-	log.Infof("Verif r:%x; d:%x; m:%s; t:%x; s:%x; N:%d; p:%x", commR, commD, miner, ticket, seed, info.SectorID.Number, proof)
+	log.Infof("Verif r:%x; d:%x; m:%s; t:%x; s:%x; N:%d; p:%x", info.OnChain.SealedCID, info.UnsealedCID, miner, ticket, seed, info.SectorID.Number, proof)
 
 	//func(ctx context.Context, maddr address.Address, ssize abi.SectorSize, commD, commR, ticket, proof, seed []byte, sectorID abi.SectorNumber)
 	ok, err := ss.verifier.VerifySeal(info)
diff --git a/chain/vm/vm.go b/chain/vm/vm.go
index c74f2cafe..e9ece15ae 100644
--- a/chain/vm/vm.go
+++ b/chain/vm/vm.go
@@ -4,10 +4,11 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"github.com/filecoin-project/specs-actors/actors/builtin"
 	"math/big"
 	"reflect"
 
+	"github.com/filecoin-project/specs-actors/actors/builtin"
+
 	block "github.com/ipfs/go-block-format"
 	cid "github.com/ipfs/go-cid"
 	hamt "github.com/ipfs/go-hamt-ipld"
diff --git a/cmd/lotus-bench/main.go b/cmd/lotus-bench/main.go
index 27eb5141b..0070ae2df 100644
--- a/cmd/lotus-bench/main.go
+++ b/cmd/lotus-bench/main.go
@@ -227,7 +227,7 @@ func main() {
 
 				seed := lapi.SealSeed{
 					Epoch: 101,
-					Value: []byte{1, 2, 3, 4, 5},
+					Value: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 255},
 				}
 
 				log.Info("Generating PoRep for sector (1)")
diff --git a/cmd/lotus-chainwatch/storage.go b/cmd/lotus-chainwatch/storage.go
index c3df0a789..374066ced 100644
--- a/cmd/lotus-chainwatch/storage.go
+++ b/cmd/lotus-chainwatch/storage.go
@@ -555,7 +555,7 @@ create temp table c (like blocks_challenges excluding constraints) on commit dro
 		}
 	}
 
-	stmt2, err := tx.Prepare(`copy b (cid, parentWeight, parentStateRoot, height, miner, "timestamp", vrfproof, tickets, eprof, prand, ep0partial, ep0sector, ep0challangei) from stdin`)
+	stmt2, err := tx.Prepare(`copy b (cid, parentWeight, parentStateRoot, height, miner, "timestamp", vrfproof, tickets, prand, ep0partial, ep0sector, ep0challangei) from stdin`)
 	if err != nil {
 		return err
 	}
@@ -575,7 +575,7 @@ create temp table c (like blocks_challenges excluding constraints) on commit dro
 			bh.Timestamp,
 			bh.Ticket.VRFProof,
 			l,
-			bh.EPostProof.Proof,
+			//bh.EPostProof.Proof,
 			bh.EPostProof.PostRand,
 			bh.EPostProof.Candidates[0].Partial,
 			bh.EPostProof.Candidates[0].SectorID,
diff --git a/cmd/lotus-seed/main.go b/cmd/lotus-seed/main.go
index 46445f1f0..2096ac0ff 100644
--- a/cmd/lotus-seed/main.go
+++ b/cmd/lotus-seed/main.go
@@ -21,6 +21,7 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/filecoin-project/specs-actors/actors/abi/big"
 
+	lapi "github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/cmd/lotus-seed/seed"
@@ -119,7 +120,7 @@ var preSealCmd = &cli.Command{
 			}
 		}
 
-		rp, err := registeredProofFromSsize(c.Uint64("sector-size"))
+		rp, _, err := lapi.ProofTypeFromSectorSize(abi.SectorSize(c.Uint64("sector-size")))
 		if err != nil {
 			return err
 		}
@@ -221,20 +222,15 @@ var aggregateSectorDirsCmd = &cli.Command{
 
 		ssize := abi.SectorSize(cctx.Uint64("sector-size"))
 
-		rp, err := registeredProofFromSsize(cctx.Uint64("sector-size"))
-		if err != nil {
-			return err
-		}
-
-		sp, err := rp.RegisteredSealProof()
+		ppt, spt, err := lapi.ProofTypeFromSectorSize(abi.SectorSize(cctx.Uint64("sector-size")))
 		if err != nil {
 			return err
 		}
 
 		agsb, err := sectorbuilder.New(&sectorbuilder.Config{
 			Miner:         maddr,
-			SealProofType: sp,
-			PoStProofType: rp,
+			SealProofType: spt,
+			PoStProofType: ppt,
 			Paths:         sectorbuilder.SimplePath(destdir),
 			WorkerThreads: 2,
 		}, namespace.Wrap(agmds, datastore.NewKey("/sectorbuilder")))
@@ -295,8 +291,8 @@ var aggregateSectorDirsCmd = &cli.Command{
 
 			sb, err := sectorbuilder.New(&sectorbuilder.Config{
 				Miner:         maddr,
-				SealProofType: sp,
-				PoStProofType: rp,
+				SealProofType: spt,
+				PoStProofType: ppt,
 				Paths:         sectorbuilder.SimplePath(dir),
 				WorkerThreads: 2,
 			}, namespace.Wrap(mds, datastore.NewKey("/sectorbuilder")))
@@ -336,19 +332,3 @@ func mergeGenMiners(a, b genesis.Miner) genesis.Miner {
 		Sectors:       append(a.Sectors, b.Sectors...),
 	}
 }
-
-func registeredProofFromSsize(ssize uint64) (abi.RegisteredProof, error) {
-	// TODO: this should be provided to us by something lower down...
-	switch ssize {
-	case 2 << 10:
-		return abi.RegisteredProof_StackedDRG2KiBPoSt, nil
-	case 32 << 30:
-		return abi.RegisteredProof_StackedDRG32GiBPoSt, nil
-	case 8 << 20:
-		return abi.RegisteredProof_StackedDRG8MiBPoSt, nil
-	case 512 << 20:
-		return abi.RegisteredProof_StackedDRG512MiBPoSt, nil
-	default:
-		return 0, fmt.Errorf("unsupported sector size: %d", ssize)
-	}
-}
diff --git a/cmd/lotus-seed/seed/seed.go b/cmd/lotus-seed/seed/seed.go
index 270b35e6d..8af65e3bb 100644
--- a/cmd/lotus-seed/seed/seed.go
+++ b/cmd/lotus-seed/seed/seed.go
@@ -101,9 +101,10 @@ func PreSeal(maddr address.Address, pt abi.RegisteredProof, offset abi.SectorNum
 
 		log.Warn("PreCommitOutput: ", sid, scid, ucid)
 		sealedSectors = append(sealedSectors, &genesis.PreSeal{
-			CommR:    scid,
-			CommD:    ucid,
-			SectorID: sid,
+			CommR:     scid,
+			CommD:     ucid,
+			SectorID:  sid,
+			ProofType: pt,
 		})
 	}
 
diff --git a/genesis/types.go b/genesis/types.go
index 5d9073c07..20a795642 100644
--- a/genesis/types.go
+++ b/genesis/types.go
@@ -18,10 +18,11 @@ const (
 )
 
 type PreSeal struct {
-	CommR    cid.Cid
-	CommD    cid.Cid
-	SectorID abi.SectorNumber
-	Deal     market.DealProposal
+	CommR     cid.Cid
+	CommD     cid.Cid
+	SectorID  abi.SectorNumber
+	Deal      market.DealProposal
+	ProofType abi.RegisteredProof
 }
 
 type Miner struct {
diff --git a/go.mod b/go.mod
index eb744a101..6adb11e0c 100644
--- a/go.mod
+++ b/go.mod
@@ -18,12 +18,12 @@ require (
 	github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03
 	github.com/filecoin-project/go-data-transfer v0.0.0-20191219005021-4accf56bd2ce
 	github.com/filecoin-project/go-fil-commcid v0.0.0-20200208005934-2b8bd03caca5
-	github.com/filecoin-project/go-fil-markets v0.0.0-20200227194154-8ef88c730c81
+	github.com/filecoin-project/go-fil-markets v0.0.0-20200228192824-ee51014cc8c6
 	github.com/filecoin-project/go-padreader v0.0.0-20200210211231-548257017ca6
 	github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663
 	github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200228064721-be233370d8e9
 	github.com/filecoin-project/go-statestore v0.1.0
-	github.com/filecoin-project/specs-actors v0.0.0-20200226233922-9ed222007d11
+	github.com/filecoin-project/specs-actors v0.0.0-20200229011003-1d726e3afd04
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1
 	github.com/go-ole/go-ole v1.2.4 // indirect
 	github.com/google/uuid v1.1.1
diff --git a/go.sum b/go.sum
index 921506d7a..b582d3542 100644
--- a/go.sum
+++ b/go.sum
@@ -94,13 +94,11 @@ github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25Kn
 github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
 github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
 github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
-github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.8.0 h1:5bzFgL+oy7JITMTxUPJ00n7VxmYd/PdMp5mHFX40/RY=
 github.com/fatih/color v1.8.0/go.mod h1:3l45GVGkyrnYNl9HoIjnp2NnNWvh6hLAqD8yTfGjnw8=
 github.com/fd/go-nat v1.0.0/go.mod h1:BTBu/CKvMmOMUPkKVef1pngt2WFH/lg7E6yQnulfp6E=
 github.com/filecoin-project/chain-validation v0.0.3 h1:luT/8kJ0WdMIqQ9Bm31W4JkuYCW0wUb26AvnD4WK59M=
 github.com/filecoin-project/chain-validation v0.0.3/go.mod h1:NCEGFjcWRjb8akWFSOXvU6n2efkWIqAeOKU6o5WBGQw=
-github.com/filecoin-project/go-address v0.0.0-20200107215422-da8eea2842b5 h1:/MmWluswvDIbuPvBct4q6HeQgVm62O2DzWYTB38kt4A=
 github.com/filecoin-project/go-address v0.0.0-20200107215422-da8eea2842b5/go.mod h1:SAOwJoakQ8EPjwNIsiakIQKsoKdkcbx8U3IapgCg9R0=
 github.com/filecoin-project/go-address v0.0.2-0.20200218010043-eb9bb40ed5be h1:TooKBwR/g8jG0hZ3lqe9S5sy2vTUcLOZLlz3M5wGn2E=
 github.com/filecoin-project/go-address v0.0.2-0.20200218010043-eb9bb40ed5be/go.mod h1:SAOwJoakQ8EPjwNIsiakIQKsoKdkcbx8U3IapgCg9R0=
@@ -114,23 +112,12 @@ github.com/filecoin-project/go-data-transfer v0.0.0-20191219005021-4accf56bd2ce
 github.com/filecoin-project/go-data-transfer v0.0.0-20191219005021-4accf56bd2ce/go.mod h1:b14UWxhxVCAjrQUYvVGrQRRsjAh79wXYejw9RbUcAww=
 github.com/filecoin-project/go-fil-commcid v0.0.0-20200208005934-2b8bd03caca5 h1:yvQJCW9mmi9zy+51xA01Ea2X7/dL7r8eKDPuGUjRmbo=
 github.com/filecoin-project/go-fil-commcid v0.0.0-20200208005934-2b8bd03caca5/go.mod h1:JbkIgFF/Z9BDlvrJO1FuKkaWsH673/UdFaiVS6uIHlA=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200223154807-f7afd8e927f9 h1:uFS5r3K3AgIuR7cGBYY8k+vgwn/UXhin9NR2yCXVe7o=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200223154807-f7afd8e927f9/go.mod h1:ftsiBbjLjNLAZ52FVDigkdCp73ltdcvAzAXav6drSLA=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200227185910-091d5f0ab546 h1:wIrzVUX4TZ56WMbTpl9cNr/XRyTfI9RTc3GfFxUtznA=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200227185910-091d5f0ab546/go.mod h1:f272JjgKXzn2OxdlmVhq6CjvlX5FfV743TvWLirsDpk=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200227194154-8ef88c730c81 h1:3jFhWp4lC7irXg/d4Q4p3FQtw0m8hne+9GHveViCM04=
-github.com/filecoin-project/go-fil-markets v0.0.0-20200227194154-8ef88c730c81/go.mod h1:rfRwhd3ujcCXnD4N9oEM2wjh8GRZGoeNXME+UPG/9ts=
+github.com/filecoin-project/go-fil-markets v0.0.0-20200228192824-ee51014cc8c6 h1:xYldVV9fZ+nsykQnEVMwcLU+6R5EshzmOWcyQDpludc=
+github.com/filecoin-project/go-fil-markets v0.0.0-20200228192824-ee51014cc8c6/go.mod h1:rfRwhd3ujcCXnD4N9oEM2wjh8GRZGoeNXME+UPG/9ts=
 github.com/filecoin-project/go-padreader v0.0.0-20200210211231-548257017ca6 h1:92PET+sx1Hb4W/8CgFwGuxaKbttwY+UNspYZTvXY0vs=
 github.com/filecoin-project/go-padreader v0.0.0-20200210211231-548257017ca6/go.mod h1:0HgYnrkeSU4lu1p+LEOeDpFsNBssa0OGGriWdA4hvaE=
-github.com/filecoin-project/go-paramfetch v0.0.0-20200102181131-b20d579f2878/go.mod h1:40kI2Gv16mwcRsHptI3OAV4nlOEU7wVDc4RgMylNFjU=
-github.com/filecoin-project/go-paramfetch v0.0.1 h1:gV7bs5YaqlgpGFMiLxInGK2L1FyCXUE0rimz4L7ghoE=
-github.com/filecoin-project/go-paramfetch v0.0.1/go.mod h1:fZzmf4tftbwf9S37XRifoJlz7nCjRdIrMGLR07dKLCc=
 github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663 h1:eYxi6vI5CyeXD15X1bB3bledDXbqKxqf0wQzTLgwYwA=
 github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663/go.mod h1:fZzmf4tftbwf9S37XRifoJlz7nCjRdIrMGLR07dKLCc=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200210220012-eb75ec747d6b h1:ds4TQay8wuV+2ucC6ENAeSYQDdl9CWYXnX0gvxzGKHg=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200210220012-eb75ec747d6b/go.mod h1:qsuPYsbKTHH2phNk81aUF9VJIilUxFrnxxnryJh4FOM=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200224193134-7d37ec0f7723 h1:06DgVyH7jjafVa01EuVltEvJ7J7Q5A3/XEOLhmdDFOc=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200224193134-7d37ec0f7723/go.mod h1:u8n91UJUua9zEiyAPw8wRAgUEoyTH8BBM9LWJ5WuxOM=
 github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200226210935-4739f8749f56 h1:CqldkHf9HtAsewneyOZdi19Btc6kEvktVVeZsP9N7NQ=
 github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200226210935-4739f8749f56/go.mod h1:tzTc9BxxSbjlIzhFwm5h9oBkXKkRuLxeiWspntwnKyw=
 github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200227214127-332d57b390aa h1:EVToQ5L+49psMvYP5ICsOcFRua79oDMyYQAeEqxkzwU=
@@ -143,22 +130,11 @@ github.com/filecoin-project/go-statemachine v0.0.0-20200226041606-2074af6d51d9 h
 github.com/filecoin-project/go-statemachine v0.0.0-20200226041606-2074af6d51d9/go.mod h1:FGwQgZAt2Gh5mjlwJUlVB62JeYdo+if0xWxSEfBD9ig=
 github.com/filecoin-project/go-statestore v0.1.0 h1:t56reH59843TwXHkMcwyuayStBIiWBRilQjQ+5IiwdQ=
 github.com/filecoin-project/go-statestore v0.1.0/go.mod h1:LFc9hD+fRxPqiHiaqUEZOinUJB4WARkRfNl10O7kTnI=
-github.com/filecoin-project/specs-actors v0.0.0-20200210130641-2d1fbd8672cf h1:fbxBG12yrxilPFV1EG2lYqpUyAlRZWkvtqjk2svSeXY=
 github.com/filecoin-project/specs-actors v0.0.0-20200210130641-2d1fbd8672cf/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
-github.com/filecoin-project/specs-actors v0.0.0-20200213011857-91a589664341/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
-github.com/filecoin-project/specs-actors v0.0.0-20200220011005-b2a2fbf40362/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
-github.com/filecoin-project/specs-actors v0.0.0-20200223194852-39976038b18d h1:vukVHqbLQnXc+ZfhK+Cor3kaQx9SQbSZISqSeGjhYcE=
-github.com/filecoin-project/specs-actors v0.0.0-20200223194852-39976038b18d/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
 github.com/filecoin-project/specs-actors v0.0.0-20200226200336-94c9b92b2775/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
-github.com/filecoin-project/specs-actors v0.0.0-20200226204010-2ecdc6712206 h1:n63pVgoasZ8lzmC+Vx3/argZ5x9Vw+fPj/f24zsCAPE=
-github.com/filecoin-project/specs-actors v0.0.0-20200226204010-2ecdc6712206/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
-github.com/filecoin-project/specs-actors v0.0.0-20200226222440-f5d1be727992 h1:T4BLV7JBn+0xxSzWlmMwU4tCGp2QkqcE+xXwNO0ufBo=
-github.com/filecoin-project/specs-actors v0.0.0-20200226222915-a3b194d36c61 h1:W5/1uYhny36b2x6Ce8awB3tF40z0Lmw7qluukRiVaVM=
-github.com/filecoin-project/specs-actors v0.0.0-20200226222915-a3b194d36c61/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
-github.com/filecoin-project/specs-actors v0.0.0-20200226232338-edd04eb6eda5 h1:B1JCug32caW45wn0X0oifwhFdveLRoi0wrVkKlf7hMs=
-github.com/filecoin-project/specs-actors v0.0.0-20200226232338-edd04eb6eda5/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
-github.com/filecoin-project/specs-actors v0.0.0-20200226233922-9ed222007d11 h1:IJJmTpNWYSdPPyMGP7ET3JE04jjZl7AzGiLTDcJOL04=
-github.com/filecoin-project/specs-actors v0.0.0-20200226233922-9ed222007d11/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
+github.com/filecoin-project/specs-actors v0.0.0-20200228215954-2c5be7cfad99/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
+github.com/filecoin-project/specs-actors v0.0.0-20200229011003-1d726e3afd04 h1:O343OeQLkLWLj5ZqQ5nhevAGBTeB5LioiA53ddScqdY=
+github.com/filecoin-project/specs-actors v0.0.0-20200229011003-1d726e3afd04/go.mod h1:0HAWYrvajFHDgRaKbF0rl+IybVLZL5z4gQ8koCMPhoU=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1 h1:EzDjxMg43q1tA2c0MV3tNbaontnHLplHyFF6M5KiVP0=
diff --git a/lotuspond/spawn.go b/lotuspond/spawn.go
index db6b8b51b..c13a14065 100644
--- a/lotuspond/spawn.go
+++ b/lotuspond/spawn.go
@@ -3,9 +3,6 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	genesis2 "github.com/filecoin-project/lotus/chain/gen/genesis"
-	"github.com/filecoin-project/lotus/genesis"
-	"github.com/filecoin-project/specs-actors/actors/abi/big"
 	"io"
 	"io/ioutil"
 	"os"
@@ -14,6 +11,10 @@ import (
 	"sync/atomic"
 	"time"
 
+	genesis2 "github.com/filecoin-project/lotus/chain/gen/genesis"
+	"github.com/filecoin-project/lotus/genesis"
+	"github.com/filecoin-project/specs-actors/actors/abi/big"
+
 	"github.com/filecoin-project/specs-actors/actors/abi"
 	"golang.org/x/xerrors"
 
@@ -45,7 +46,7 @@ func (api *api) Spawn() (nodeInfo, error) {
 		}
 
 		sbroot := filepath.Join(dir, "preseal")
-		genm, ki, err := seed.PreSeal(genMiner, build.SectorSizes[0], 0, 2, sbroot, []byte("8"), nil)
+		genm, ki, err := seed.PreSeal(genMiner, abi.RegisteredProof_StackedDRG2KiBSeal, 0, 2, sbroot, []byte("8"), nil)
 		if err != nil {
 			return nodeInfo{}, xerrors.Errorf("preseal failed: %w", err)
 		}
diff --git a/markets/storageadapter/client.go b/markets/storageadapter/client.go
index 34cd5352c..9e99b0128 100644
--- a/markets/storageadapter/client.go
+++ b/markets/storageadapter/client.go
@@ -145,8 +145,8 @@ func (n *ClientNodeAdapter) AddFunds(ctx context.Context, addr address.Address,
 	return nil
 }
 
-func (n *ClientNodeAdapter) EnsureFunds(ctx context.Context, addr address.Address, amount abi.TokenAmount) error {
-	return n.fm.EnsureAvailable(ctx, addr, amount)
+func (n *ClientNodeAdapter) EnsureFunds(ctx context.Context, addr, wallet address.Address, amount abi.TokenAmount) error {
+	return n.fm.EnsureAvailable(ctx, addr, wallet, amount)
 }
 
 func (n *ClientNodeAdapter) GetBalance(ctx context.Context, addr address.Address) (storagemarket.Balance, error) {
@@ -234,7 +234,7 @@ func (c *ClientNodeAdapter) OnDealSectorCommitted(ctx context.Context, provider
 			return false, false, xerrors.Errorf("failed to look up deal on chain: %w", err)
 		}
 
-		if sd.Proposal.StartEpoch > 0 {
+		if sd.State.SectorStartEpoch > 0 {
 			cb(nil)
 			return true, false, nil
 		}
@@ -259,7 +259,7 @@ func (c *ClientNodeAdapter) OnDealSectorCommitted(ctx context.Context, provider
 			return false, xerrors.Errorf("failed to look up deal on chain: %w", err)
 		}
 
-		if sd.Proposal.StartEpoch == 0 {
+		if sd.State.SectorStartEpoch < 1 {
 			return false, xerrors.Errorf("deal wasn't active: deal=%d, parentState=%s, h=%d", dealId, ts.ParentState(), ts.Height())
 		}
 
@@ -276,29 +276,47 @@ func (c *ClientNodeAdapter) OnDealSectorCommitted(ctx context.Context, provider
 		return nil
 	}
 
+	var sectorNumber abi.SectorNumber
+	var sectorFound bool
 	matchEvent := func(msg *types.Message) (bool, error) {
 		if msg.To != provider {
 			return false, nil
 		}
 
-		if msg.Method != builtin.MethodsMiner.ProveCommitSector {
+		switch msg.Method {
+		case builtin.MethodsMiner.PreCommitSector:
+			var params miner.SectorPreCommitInfo
+			if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
+				return false, xerrors.Errorf("unmarshal pre commit: %w", err)
+			}
+
+			for _, did := range params.DealIDs {
+				if did == abi.DealID(dealId) {
+					sectorNumber = params.SectorNumber
+					sectorFound = true
+					return false, nil
+				}
+			}
+
+			return false, nil
+		case builtin.MethodsMiner.ProveCommitSector:
+			var params miner.ProveCommitSectorParams
+			if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
+				return false, xerrors.Errorf("failed to unmarshal prove commit sector params: %w", err)
+			}
+
+			if !sectorFound {
+				return false, nil
+			}
+
+			if params.SectorNumber != sectorNumber {
+				return false, nil
+			}
+
+			return true, nil
+		default:
 			return false, nil
 		}
-
-		var params miner.SectorPreCommitInfo
-		if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
-			return false, err
-		}
-
-		var found bool
-		for _, dealID := range params.DealIDs {
-			if uint64(dealID) == dealId {
-				found = true
-				break
-			}
-		}
-
-		return found, nil
 	}
 
 	if err := c.ev.Called(checkFunc, called, revert, 3, build.SealRandomnessLookbackLimit, matchEvent); err != nil {
diff --git a/markets/storageadapter/provider.go b/markets/storageadapter/provider.go
index c7837894d..55ded4553 100644
--- a/markets/storageadapter/provider.go
+++ b/markets/storageadapter/provider.go
@@ -144,8 +144,8 @@ func (n *ProviderNodeAdapter) SignBytes(ctx context.Context, signer address.Addr
 	return localSignature, nil
 }
 
-func (n *ProviderNodeAdapter) EnsureFunds(ctx context.Context, addr address.Address, amt abi.TokenAmount) error {
-	return n.MarketEnsureAvailable(ctx, addr, amt)
+func (n *ProviderNodeAdapter) EnsureFunds(ctx context.Context, addr, wallet address.Address, amt abi.TokenAmount) error {
+	return n.MarketEnsureAvailable(ctx, addr, wallet, amt)
 }
 
 func (n *ProviderNodeAdapter) MostRecentStateId(ctx context.Context) (storagemarket.StateKey, error) {
@@ -269,29 +269,49 @@ func (n *ProviderNodeAdapter) OnDealSectorCommitted(ctx context.Context, provide
 		return nil
 	}
 
+	var sectorNumber abi.SectorNumber
+	var sectorFound bool
+
 	matchEvent := func(msg *types.Message) (bool, error) {
 		if msg.To != provider {
 			return false, nil
 		}
 
-		if msg.Method != builtin.MethodsMiner.ProveCommitSector {
+		switch msg.Method {
+		case builtin.MethodsMiner.PreCommitSector:
+			var params miner.SectorPreCommitInfo
+			if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
+				return false, xerrors.Errorf("unmarshal pre commit: %w", err)
+			}
+
+			for _, did := range params.DealIDs {
+				if did == abi.DealID(dealID) {
+					sectorNumber = params.SectorNumber
+					sectorFound = true
+					return false, nil
+				}
+			}
+
+			return false, nil
+		case builtin.MethodsMiner.ProveCommitSector:
+			var params miner.ProveCommitSectorParams
+			if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
+				return false, xerrors.Errorf("failed to unmarshal prove commit sector params: %w", err)
+			}
+
+			if !sectorFound {
+				return false, nil
+			}
+
+			if params.SectorNumber != sectorNumber {
+				return false, nil
+			}
+
+			return true, nil
+		default:
 			return false, nil
 		}
 
-		var params miner.SectorPreCommitInfo
-		if err := params.UnmarshalCBOR(bytes.NewReader(msg.Params)); err != nil {
-			return false, err
-		}
-
-		var found bool
-		for _, did := range params.DealIDs {
-			if did == abi.DealID(dealID) {
-				found = true
-				break
-			}
-		}
-
-		return found, nil
 	}
 
 	if err := n.ev.Called(checkFunc, called, revert, 3, build.SealRandomnessLookbackLimit, matchEvent); err != nil {
diff --git a/node/impl/client/client.go b/node/impl/client/client.go
index a08303a7d..d2555968a 100644
--- a/node/impl/client/client.go
+++ b/node/impl/client/client.go
@@ -300,6 +300,10 @@ func (a *API) ClientRetrieve(ctx context.Context, order api.RetrievalOrder, path
 		order.MinerPeerID = pid
 	}
 
+	if order.Size == 0 {
+		return xerrors.Errorf("cannot make retrieval deal for zero bytes")
+	}
+
 	retrievalResult := make(chan error, 1)
 
 	unsubscribe := a.Retrieval.SubscribeToEvents(func(event retrievalmarket.ClientEvent, state retrievalmarket.ClientDealState) {
@@ -313,10 +317,12 @@ func (a *API) ClientRetrieve(ctx context.Context, order api.RetrievalOrder, path
 		}
 	})
 
+	ppb := types.BigDiv(order.Total, types.NewInt(order.Size))
+
 	a.Retrieval.Retrieve(
 		ctx,
 		order.Root,
-		retrievalmarket.NewParamsV0(types.BigDiv(order.Total, types.NewInt(order.Size)), order.PaymentInterval, order.PaymentIntervalIncrease),
+		retrievalmarket.NewParamsV0(ppb, order.PaymentInterval, order.PaymentIntervalIncrease),
 		order.Total,
 		order.MinerPeerID,
 		order.Client,
diff --git a/node/impl/market/market.go b/node/impl/market/market.go
index fceb75781..eb7b9d258 100644
--- a/node/impl/market/market.go
+++ b/node/impl/market/market.go
@@ -16,6 +16,6 @@ type MarketAPI struct {
 	FMgr *market.FundMgr
 }
 
-func (a *MarketAPI) MarketEnsureAvailable(ctx context.Context, addr address.Address, amt types.BigInt) error {
-	return a.FMgr.EnsureAvailable(ctx, addr, amt)
+func (a *MarketAPI) MarketEnsureAvailable(ctx context.Context, addr, wallet address.Address, amt types.BigInt) error {
+	return a.FMgr.EnsureAvailable(ctx, addr, wallet, amt)
 }
diff --git a/storage/miner.go b/storage/miner.go
index 11853776a..41088908d 100644
--- a/storage/miner.go
+++ b/storage/miner.go
@@ -134,7 +134,7 @@ func (epp *SectorBuilderEpp) GenerateCandidates(ctx context.Context, ssi []abi.S
 
 	cds, err := epp.sb.GenerateEPostCandidates(ssi, rand, faults)
 	if err != nil {
-		return nil, err
+		return nil, xerrors.Errorf("failed to generate candidates: %w", err)
 	}
 	log.Infof("Generate candidates took %s", time.Since(start))
 	return cds, nil
diff --git a/storage/sbmock/preseal.go b/storage/sbmock/preseal.go
index 66b9b72b0..7d7e1d741 100644
--- a/storage/sbmock/preseal.go
+++ b/storage/sbmock/preseal.go
@@ -8,6 +8,7 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/builtin/market"
 	"github.com/filecoin-project/specs-actors/actors/crypto"
 
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/chain/wallet"
 	"github.com/filecoin-project/lotus/genesis"
@@ -29,9 +30,15 @@ func PreSeal(ssize abi.SectorSize, maddr address.Address, sectors int) (*genesis
 		Sectors:       make([]*genesis.PreSeal, sectors),
 	}
 
+	_, st, err := api.ProofTypeFromSectorSize(ssize)
+	if err != nil {
+		return nil, nil, err
+	}
+
 	for i := range genm.Sectors {
 		preseal := &genesis.PreSeal{}
 
+		preseal.ProofType = st
 		preseal.CommD = zerocomm.ForSize(abi.PaddedPieceSize(ssize).Unpadded())
 		d, _ := commcid.CIDToPieceCommitmentV1(preseal.CommD)
 		r := commDR(d)
diff --git a/storage/sealing/fsm_events.go b/storage/sealing/fsm_events.go
index dc773b966..e809685eb 100644
--- a/storage/sealing/fsm_events.go
+++ b/storage/sealing/fsm_events.go
@@ -46,13 +46,15 @@ func (evt SectorForceState) applyGlobal(state *SectorInfo) bool {
 // Normal path
 
 type SectorStart struct {
-	id     abi.SectorNumber
-	pieces []Piece
+	id         abi.SectorNumber
+	sectorType abi.RegisteredProof
+	pieces     []Piece
 }
 
 func (evt SectorStart) apply(state *SectorInfo) {
 	state.SectorID = evt.id
 	state.Pieces = evt.pieces
+	state.SectorType = evt.sectorType
 }
 
 type SectorPacked struct{ pieces []Piece }
diff --git a/storage/sealing/garbage.go b/storage/sealing/garbage.go
index d0874f66c..660a2604a 100644
--- a/storage/sealing/garbage.go
+++ b/storage/sealing/garbage.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/filecoin-project/specs-actors/actors/abi"
 
+	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/lib/nullreader"
 )
 
@@ -48,6 +49,12 @@ func (m *Sealing) PledgeSector() error {
 
 		size := abi.PaddedPieceSize(m.sb.SectorSize()).Unpadded()
 
+		rt, _, err := api.ProofTypeFromSectorSize(m.sb.SectorSize())
+		if err != nil {
+			log.Error(err)
+			return
+		}
+
 		sid, err := m.sb.AcquireSectorNumber()
 		if err != nil {
 			log.Errorf("%+v", err)
@@ -60,7 +67,7 @@ func (m *Sealing) PledgeSector() error {
 			return
 		}
 
-		if err := m.newSector(sid, pieces); err != nil {
+		if err := m.newSector(sid, rt, pieces); err != nil {
 			log.Errorf("%+v", err)
 			return
 		}
diff --git a/storage/sealing/sealing.go b/storage/sealing/sealing.go
index 8fd16cc17..cd2f6ff5f 100644
--- a/storage/sealing/sealing.go
+++ b/storage/sealing/sealing.go
@@ -121,7 +121,12 @@ func (m *Sealing) SealPiece(ctx context.Context, size abi.UnpaddedPieceSize, r i
 		return xerrors.Errorf("adding piece to sector: %w", err)
 	}
 
-	return m.newSector(sectorID, []Piece{
+	_, rt, err := api.ProofTypeFromSectorSize(m.sb.SectorSize())
+	if err != nil {
+		return xerrors.Errorf("bad sector size: %w", err)
+	}
+
+	return m.newSector(sectorID, rt, []Piece{
 		{
 			DealID: &dealID,
 
@@ -131,10 +136,11 @@ func (m *Sealing) SealPiece(ctx context.Context, size abi.UnpaddedPieceSize, r i
 	})
 }
 
-func (m *Sealing) newSector(sid abi.SectorNumber, pieces []Piece) error {
+func (m *Sealing) newSector(sid abi.SectorNumber, rt abi.RegisteredProof, pieces []Piece) error {
 	log.Infof("Start sealing %d", sid)
 	return m.sectors.Send(uint64(sid), SectorStart{
-		id:     sid,
-		pieces: pieces,
+		id:         sid,
+		pieces:     pieces,
+		sectorType: rt,
 	})
 }
diff --git a/storage/sealing/states.go b/storage/sealing/states.go
index 426f028ad..b3f033a9d 100644
--- a/storage/sealing/states.go
+++ b/storage/sealing/states.go
@@ -100,7 +100,7 @@ func (m *Sealing) handlePreCommitting(ctx statemachine.Context, sector SectorInf
 	params := &miner.SectorPreCommitInfo{
 		Expiration:      10000000, // TODO: implement
 		SectorNumber:    sector.SectorID,
-		RegisteredProof: abi.RegisteredProof_StackedDRG32GiBSeal,
+		RegisteredProof: sector.SectorType,
 
 		SealedCID:     *sector.CommR,
 		SealRandEpoch: sector.Ticket.Epoch,