no more need for errNotSupported

unit tests for ancient interfaces
ancient interfaces
2020-09-14 10:18:50 -05:00 · 2020-09-14 10:15:39 -05:00 · 2020-09-14 08:53:30 -05:00 · 2020-09-14 08:51:48 -05:00 · 2020-09-14 08:50:51 -05:00 · 2020-09-11 09:02:11 -05:00
41 changed files with 2321 additions and 1961 deletions
--- a/README.md
+++ b/README.md
@ -1,6 +1,6 @@
 ## ipfs-ethdb

-[![Go Report Card](https://goreportcard.com/badge/github.com/cerc/ipfs-ethdb)](https://goreportcard.com/report/github.com/cerc-io/ipfs-ethdb)
+[![Go Report Card](https://goreportcard.com/badge/github.com/vulcanize/ipfs-ethdb)](https://goreportcard.com/report/github.com/vulcanize/ipfs-ethdb)

 > go-ethereum ethdb interfaces for Ethereum state data stored in IPFS

@ -11,7 +11,7 @@ interfacing with a state database. These interfaces are used to build higher-lev
 which are used to perform the bulk of state related needs.

 Ethereum data can be stored on IPFS, standard codecs for Etheruem data are defined in the [go-cid](https://github.com/ipfs/go-cid) library.
-Using our [statediffing geth client](https://github.com/cerc-io/go-ethereum/releases/tag/v1.9.11-statediff-0.0.2) it is feasible to extract every single
+Using our [statediffing geth client](https://github.com/vulcanize/go-ethereum/releases/tag/v1.9.11-statediff-0.0.2) it is feasible to extract every single
 state and storage node and publish it to IPFS.

 Geth stores state data in leveldb as key-value pairs between the keccak256 hash of the rlp-encoded object and the rlp-encoded object.
@ -34,7 +34,7 @@ Ancient interfaces are used for Ancient/frozen data operations (e.g. rawdb/table
 Outside of these primarily auxiliary capabilities, this package satisfies the interfaces required for many state operations using Ethereum data on IPFS.

 e.g.
-
+ 
 go-ethereum trie.NodeIterator and state.NodeIterator can be constructed from the ethdb.KeyValueStore and ethdb.Database interfaces, respectively:

 ```go
@ -42,7 +42,7 @@ package main

 import (
    "context"
-
+	
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/trie"
@ -50,7 +50,7 @@ import (
    "github.com/ipfs/go-ipfs/core"
    "github.com/ipfs/go-ipfs/repo/fsrepo"
    "github.com/jmoiron/sqlx"
-    "github.com/cerc-io/ipfs-ethdb/v5"
+    "github.com/vulcanize/ipfs-ethdb"
 )

 func main() {
@ -71,7 +71,7 @@ func main() {

    database := ipfsethdb.NewDatabase(ipfsNode.Blocks)
    stateDatabase := state.NewDatabase(database)
-    stateDB, _ := state.New(common.Hash{}, stateDatabase, nil)
+    stateDB, _ := state.New(common.Hash{}, stateDatabase)
    stateDBNodeIterator := state.NewNodeIterator(stateDB)
    // do stuff with the statedb node iterator
 }
--- a/batch.go
+++ b/batch.go
@ -17,13 +17,12 @@
 package ipfsethdb

 import (
-	"context"
 	"errors"

 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethdb"
-	lru "github.com/hashicorp/golang-lru"
-	blocks "github.com/ipfs/go-block-format"
+	"github.com/hashicorp/golang-lru"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 )

@ -31,8 +30,6 @@ var (
 	EvictionWarningErr = errors.New("warn: batch has exceeded capacity, data has been evicted")
 )

-var _ ethdb.Batch = &Batch{}
-
 // Batch is the type that satisfies the ethdb.Batch interface for IPFS Ethereum data using the ipfs blockservice interface
 // This is ipfs-backing-datastore agnostic but must operate through a configured ipfs node (and so is subject to lockfile contention with e.g. an ipfs daemon)
 // If blockservice block exchange is configured the blockservice can fetch data that are missing locally from IPFS peers
@ -104,7 +101,7 @@ func (b *Batch) Write() error {
 		}
 		puts[i] = b
 	}
-	if err := b.blockService.AddBlocks(context.Background(), puts); err != nil {
+	if err := b.blockService.AddBlocks(puts); err != nil {
 		return err
 	}
 	for _, key := range b.deleteCache.Keys() {
@ -113,7 +110,7 @@ func (b *Batch) Write() error {
 		if err != nil {
 			return err
 		}
-		if err := b.blockService.DeleteBlock(context.Background(), c); err != nil {
+		if err := b.blockService.DeleteBlock(c); err != nil {
 			return err
 		}
 	}
--- a/batch_test.go
+++ b/batch_test.go
@ -25,7 +25,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"

-	ipfsethdb "github.com/cerc-io/ipfs-ethdb/v5"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb"
 )

 var (
--- a/database.go
+++ b/database.go
@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strconv"
 	"strings"

 	"github.com/ethereum/go-ethereum/ethdb"
@ -32,8 +33,6 @@ var (
 	errNotSupported             = errors.New("this operation is not supported")
 )

-var _ ethdb.Database = &Database{}
-
 // Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for IPFS Ethereum data
 // This is ipfs-backing-datastore agnostic but must operate through a configured ipfs node (and so is subject to lockfile contention with e.g. an ipfs daemon)
 // If blockservice block exchange is configured the blockservice can fetch data that are missing locally from IPFS peers
@ -55,10 +54,6 @@ func NewDatabase(bs blockservice.BlockService) ethdb.Database {
 	}
 }

-func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
-	return 0, errNotSupported
-}
-
 // Has satisfies the ethdb.KeyValueReader interface
 // Has retrieves if a key is present in the key-value data store
 // This only operates on the local blockstore not through the exchange
@ -68,7 +63,7 @@ func (d *Database) Has(key []byte) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	return d.blockService.Blockstore().Has(context.Background(), c)
+	return d.blockService.Blockstore().Has(c)
 }

 // Get satisfies the ethdb.KeyValueReader interface
@ -94,7 +89,7 @@ func (d *Database) Put(key []byte, value []byte) error {
 	if err != nil {
 		return err
 	}
-	return d.blockService.AddBlock(context.Background(), b)
+	return d.blockService.AddBlock(b)
 }

 // Delete satisfies the ethdb.KeyValueWriter interface
@ -105,7 +100,7 @@ func (d *Database) Delete(key []byte) error {
 	if err != nil {
 		return err
 	}
-	return d.blockService.DeleteBlock(context.Background(), c)
+	return d.blockService.DeleteBlock(c)
 }

 // DatabaseProperty enum type
@ -134,6 +129,9 @@ func (d *Database) Stat(property string) (string, error) {
 		return "", err
 	}
 	switch prop {
+	case ExchangeOnline:
+		online := d.blockService.Exchange().IsOnline()
+		return strconv.FormatBool(online), nil
 	default:
 		return "", fmt.Errorf("unhandled database property")
 	}
@ -156,25 +154,23 @@ func (d *Database) NewBatch() ethdb.Batch {
 	return b
 }

-// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	b, err := NewBatch(d.blockService, size)
-	if err != nil {
-		panic(err)
-	}
-	return b
+// NewIterator creates a binary-alphabetical iterator over the entire keyspace
+// contained within the key-value database.
+func (d *Database) NewIterator() ethdb.Iterator {
+	return NewIterator([]byte{}, []byte{}, d.blockService)
 }

-// NewIterator satisfies the ethdb.Iteratee interface
-// it creates a binary-alphabetical iterator over a subset
-// of database content with a particular key prefix, starting at a particular
-// initial key (or after, if it does not exist).
-//
-// Note: This method assumes that the prefix is NOT part of the start, so there's
-// no need for the caller to prepend the prefix to the start
-func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
-	return NewIterator(start, prefix, d.blockService)
+// NewIteratorWithStart creates a binary-alphabetical iterator over a subset of
+// database content starting at a particular initial key (or after, if it does
+// not exist).
+func (d *Database) NewIteratorWithStart(start []byte) ethdb.Iterator {
+	return NewIterator(start, []byte{}, d.blockService)
+}
+
+// NewIteratorWithPrefix creates a binary-alphabetical iterator over a subset
+// of database content with a particular key prefix.
+func (d *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
+	return NewIterator([]byte{}, prefix, d.blockService)
 }

 // Close satisfies the io.Closer interface
@ -201,41 +197,21 @@ func (d *Database) Ancients() (uint64, error) {
 	return 0, errNotSupported
 }

-// Tail satisfies the ethdb.AncientReader interface.
-// Tail returns the number of first stored item in the freezer.
-func (d *Database) Tail() (uint64, error) {
-	return 0, errNotSupported
-}
-
 // AncientSize satisfies the ethdb.AncientReader interface
 // AncientSize returns the ancient size of the specified category
 func (d *Database) AncientSize(kind string) (uint64, error) {
 	return 0, errNotSupported
 }

-// AncientRange retrieves all the items in a range, starting from the index 'start'.
-// It will return
-//  - at most 'count' items,
-//  - at least 1 item (even if exceeding the maxBytes), but will otherwise
-//   return as many items as fit into maxBytes.
-func (d *Database) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
-	return nil, errNotSupported
-}
-
-// ReadAncients applies the provided AncientReader function
-func (d *Database) ReadAncients(fn func(ethdb.AncientReaderOp) error) (err error) {
+// AppendAncient satisfies the ethdb.AncientWriter interface
+// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
+func (d *Database) AppendAncient(number uint64, hash, header, body, receipt, td []byte) error {
 	return errNotSupported
 }

-// TruncateHead satisfies the ethdb.AncientWriter interface.
-// TruncateHead discards all but the first n ancient data from the ancient store.
-func (d *Database) TruncateHead(n uint64) error {
-	return errNotSupported
-}
-
-// TruncateTail satisfies the ethdb.AncientWriter interface.
-// TruncateTail discards the first n ancient data from the ancient store.
-func (d *Database) TruncateTail(n uint64) error {
+// TruncateAncients satisfies the ethdb.AncientWriter interface
+// TruncateAncients discards all but the first n ancient data from the ancient store
+func (d *Database) TruncateAncients(n uint64) error {
 	return errNotSupported
 }

@ -244,20 +220,3 @@ func (d *Database) TruncateTail(n uint64) error {
 func (d *Database) Sync() error {
 	return errNotSupported
 }
-
-// MigrateTable satisfies the ethdb.AncientWriter interface.
-// MigrateTable processes and migrates entries of a given table to a new format.
-func (d *Database) MigrateTable(string, func([]byte) ([]byte, error)) error {
-	return errNotSupported
-}
-
-// NewSnapshot satisfies the ethdb.Snapshotter interface.
-// NewSnapshot creates a database snapshot based on the current state.
-func (d *Database) NewSnapshot() (ethdb.Snapshot, error) {
-	return nil, errNotSupported
-}
-
-// AncientDatadir returns an error as we don't have a backing chain freezer.
-func (d *Database) AncientDatadir() (string, error) {
-	return "", errNotSupported
-}
--- a/database_test.go
+++ b/database_test.go
@ -26,7 +26,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"

-	ipfsethdb "github.com/cerc-io/ipfs-ethdb/v5"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb"
 )

 var (
--- a/go.mod
+++ b/go.mod
@ -1,71 +1,20 @@
-module github.com/cerc-io/ipfs-ethdb/v5
+module github.com/vulcanize/ipfs-ethdb

-go 1.19
+go 1.13

 require (
-	github.com/ethereum/go-ethereum v1.11.5
-	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d
-	github.com/ipfs/go-block-format v0.0.3
-	github.com/ipfs/go-blockservice v0.4.0
-	github.com/ipfs/go-cid v0.2.0
-	github.com/ipfs/go-ipfs-blockstore v1.2.0
-	github.com/ipfs/go-ipfs-ds-help v1.1.0
-	github.com/ipfs/go-ipfs-exchange-interface v0.2.0
-	github.com/jmoiron/sqlx v1.3.5
-	github.com/lib/pq v1.10.6
-	github.com/mailgun/groupcache/v2 v2.3.0
-	github.com/multiformats/go-multihash v0.1.0
-	github.com/onsi/ginkgo v1.16.5
-	github.com/onsi/gomega v1.19.0
+	github.com/ethereum/go-ethereum v1.9.10
+	github.com/hashicorp/golang-lru v0.5.4
+	github.com/ipfs/go-block-format v0.0.2
+	github.com/ipfs/go-blockservice v0.1.3
+	github.com/ipfs/go-cid v0.0.5
+	github.com/ipfs/go-ipfs-blockstore v1.0.0
+	github.com/ipfs/go-ipfs-ds-help v1.0.0
+	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
+	github.com/jmoiron/sqlx v1.2.0
+	github.com/lib/pq v1.0.0
+	github.com/multiformats/go-multihash v0.0.13
+	github.com/onsi/ginkgo v1.8.0
+	github.com/onsi/gomega v1.5.0
 	github.com/sirupsen/logrus v1.6.0
 )
-
-require github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
-
-require (
-	github.com/btcsuite/btcd v0.22.0-beta // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/fsnotify/fsnotify v1.6.0 // indirect
-	github.com/go-logr/logr v1.2.3 // indirect
-	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/uuid v1.3.0 // indirect
-	github.com/holiman/uint256 v1.2.0 // indirect
-	github.com/ipfs/bbloom v0.0.4 // indirect
-	github.com/ipfs/go-datastore v0.5.0 // indirect
-	github.com/ipfs/go-ipfs-util v0.0.2 // indirect
-	github.com/ipfs/go-ipld-format v0.4.0 // indirect
-	github.com/ipfs/go-log v1.0.5 // indirect
-	github.com/ipfs/go-log/v2 v2.3.0 // indirect
-	github.com/ipfs/go-metrics-interface v0.0.1 // indirect
-	github.com/ipfs/go-verifcid v0.0.1 // indirect
-	github.com/jbenet/goprocess v0.1.4 // indirect
-	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
-	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
-	github.com/mattn/go-isatty v0.0.16 // indirect
-	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 // indirect
-	github.com/minio/sha256-simd v1.0.0 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
-	github.com/multiformats/go-base32 v0.0.3 // indirect
-	github.com/multiformats/go-base36 v0.1.0 // indirect
-	github.com/multiformats/go-multibase v0.0.3 // indirect
-	github.com/multiformats/go-varint v0.0.6 // indirect
-	github.com/nxadm/tail v1.4.8 // indirect
-	github.com/opentracing/opentracing-go v1.2.0 // indirect
-	github.com/segmentio/fasthash v1.0.3 // indirect
-	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	go.opentelemetry.io/otel v1.7.0 // indirect
-	go.opentelemetry.io/otel/trace v1.7.0 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
-	go.uber.org/zap v1.16.0 // indirect
-	golang.org/x/crypto v0.1.0 // indirect
-	golang.org/x/net v0.4.0 // indirect
-	golang.org/x/sys v0.5.0 // indirect
-	golang.org/x/text v0.7.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
-	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
-	lukechampine.com/blake3 v1.1.6 // indirect
-)
--- a/go.sum
+++ b/go.sum
@ -1,359 +1,403 @@
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/AndreasBriese/bbloom v0.0.0-20180913140656-343706a395b7/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
+github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
+github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
+github.com/Azure/azure-storage-blob-go v0.7.0/go.mod h1:f9YQKtsG1nMisotuTPpO0tjNuEjKRYAcJU8/ydDI++4=
+github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
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-github.com/DataDog/zstd v1.5.2 h1:vUG4lAyuPCXO0TLbXvPv7EB7cNK1QV/luu55UHLrrn8=
-github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIOA6tDi6QXUemppXK3P9BI7mr2hd6gx8=
-github.com/VictoriaMetrics/fastcache v1.6.0 h1:C/3Oi3EiBCqufydp1neRZkqcwmEiuRT9c3fqvvgKm5o=
+github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETFUpAzWW2ep1Y=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/OneOfOne/xxhash v1.2.5/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q=
+github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
+github.com/VictoriaMetrics/fastcache v1.5.3 h1:2odJnXLbFZcoV9KYtQ+7TH1UOq3dn3AssMgieaezkR4=
+github.com/VictoriaMetrics/fastcache v1.5.3/go.mod h1:+jv9Ckb+za/P1ZRg/sulP5Ni1v49daAVERr0H3CuscE=
+github.com/VictoriaMetrics/fastcache v1.5.7 h1:4y6y0G8PRzszQUYIQHHssv/jgPHAb5qQuuDNdCbyAgw=
+github.com/VictoriaMetrics/fastcache v1.5.7/go.mod h1:ptDBkNMQI4RtmVo8VS/XwRY6RoTu1dAWCbrk+6WsEM8=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
-github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
-github.com/btcsuite/btcd v0.22.0-beta h1:LTDpDKUM5EeOFBPM8IXpinEcmZ6FWfNZbE3lfrfdnWo=
-github.com/btcsuite/btcd v0.22.0-beta/go.mod h1:9n5ntfhhHQBIhUvlhDvD3Qg6fRUj4jkN0VB8L8svzOA=
-github.com/btcsuite/btcd/btcec/v2 v2.2.0 h1:fzn1qaOt32TuLjFlkzYSsBC35Q3KUjT1SwPxiMSCF5k=
-github.com/btcsuite/btcd/btcec/v2 v2.2.0/go.mod h1:U7MHm051Al6XmscBQ0BoNydpOTsFAn707034b5nY8zU=
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--- a/iterator.go
+++ b/iterator.go
@ -23,8 +23,6 @@ import (
 	"github.com/ipfs/go-blockservice"
 )

-var _ ethdb.Iterator = &Iterator{}
-
 // Iterator is the type that satisfies the ethdb.Iterator interface for IPFS Ethereum data
 // Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
 // rawdb.InspectDatabase, and the new core/state/snapshot features.
--- a/mock_blockservice.go
+++ b/mock_blockservice.go
@ -20,11 +20,11 @@ import (
 	"context"
 	"errors"

-	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-cid"
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	exchange "github.com/ipfs/go-ipfs-exchange-interface"
+	"github.com/ipfs/go-ipfs-blockstore"
+	"github.com/ipfs/go-ipfs-exchange-interface"
 )

 var (
@ -52,27 +52,27 @@ func (mbs *MockBlockservice) Exchange() exchange.Interface {
 	panic("Exchange: implement me")
 }

-func (mbs *MockBlockservice) AddBlock(ctx context.Context, b blocks.Block) error {
-	return mbs.blockStore.Put(ctx, b)
+func (mbs *MockBlockservice) AddBlock(b blocks.Block) error {
+	return mbs.blockStore.Put(b)
 }

-func (mbs *MockBlockservice) AddBlocks(ctx context.Context, bs []blocks.Block) error {
-	return mbs.blockStore.PutMany(ctx, bs)
+func (mbs *MockBlockservice) AddBlocks(bs []blocks.Block) error {
+	return mbs.blockStore.PutMany(bs)
 }

-func (mbs *MockBlockservice) DeleteBlock(ctx context.Context, c cid.Cid) error {
-	return mbs.blockStore.DeleteBlock(ctx, c)
+func (mbs *MockBlockservice) DeleteBlock(c cid.Cid) error {
+	return mbs.blockStore.DeleteBlock(c)
 }

 func (mbs *MockBlockservice) GetBlock(ctx context.Context, c cid.Cid) (blocks.Block, error) {
-	return mbs.blockStore.Get(ctx, c)
+	return mbs.blockStore.Get(c)
 }

 func (mbs *MockBlockservice) GetBlocks(ctx context.Context, cs []cid.Cid) <-chan blocks.Block {
 	blockChan := make(chan blocks.Block)
 	go func() {
 		for _, c := range cs {
-			if b, err := mbs.blockStore.Get(ctx, c); err == nil {
+			if b, err := mbs.blockStore.Get(c); err == nil {
 				blockChan <- b
 			}
 		}
@ -93,17 +93,17 @@ type MockBlockstore struct {
 	err    error
 }

-func (mbs *MockBlockstore) DeleteBlock(ctx context.Context, c cid.Cid) error {
+func (mbs *MockBlockstore) DeleteBlock(c cid.Cid) error {
 	delete(mbs.blocks, c.String())
 	return mbs.err
 }

-func (mbs *MockBlockstore) Has(ctx context.Context, c cid.Cid) (bool, error) {
+func (mbs *MockBlockstore) Has(c cid.Cid) (bool, error) {
 	_, ok := mbs.blocks[c.String()]
 	return ok, mbs.err
 }

-func (mbs *MockBlockstore) Get(ctx context.Context, c cid.Cid) (blocks.Block, error) {
+func (mbs *MockBlockstore) Get(c cid.Cid) (blocks.Block, error) {
 	obj, ok := mbs.blocks[c.String()]
 	if !ok {
 		return nil, blockNotFoundErr
@ -111,7 +111,7 @@ func (mbs *MockBlockstore) Get(ctx context.Context, c cid.Cid) (blocks.Block, er
 	return obj, mbs.err
 }

-func (mbs *MockBlockstore) GetSize(ctx context.Context, c cid.Cid) (int, error) {
+func (mbs *MockBlockstore) GetSize(c cid.Cid) (int, error) {
 	obj, ok := mbs.blocks[c.String()]
 	if !ok {
 		return 0, blockNotFoundErr
@ -119,12 +119,12 @@ func (mbs *MockBlockstore) GetSize(ctx context.Context, c cid.Cid) (int, error)
 	return len(obj.RawData()), mbs.err
 }

-func (mbs *MockBlockstore) Put(ctx context.Context, b blocks.Block) error {
+func (mbs *MockBlockstore) Put(b blocks.Block) error {
 	mbs.blocks[b.Cid().String()] = b
 	return mbs.err
 }

-func (mbs *MockBlockstore) PutMany(ctx context.Context, bs []blocks.Block) error {
+func (mbs *MockBlockstore) PutMany(bs []blocks.Block) error {
 	for _, b := range bs {
 		mbs.blocks[b.Cid().String()] = b
 	}
--- a/postgres/ancient.go
+++ b/postgres/ancient.go
@ -0,0 +1,238 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb
+
+import (
+	"database/sql"
+	"fmt"
+
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	// FreezerHeaderTable indicates the name of the freezer header table.
+	FreezerHeaderTable = "headers"
+
+	// FreezerHashTable indicates the name of the freezer canonical hash table.
+	FreezerHashTable = "hashes"
+
+	// FreezerBodiesTable indicates the name of the freezer block body table.
+	FreezerBodiesTable = "bodies"
+
+	// FreezerReceiptTable indicates the name of the freezer receipts table.
+	FreezerReceiptTable = "receipts"
+
+	// FreezerDifficultyTable indicates the name of the freezer total difficulty table.
+	FreezerDifficultyTable = "diffs"
+
+	// ancient append Postgres statements
+	appendAncientHeaderPgStr   = "INSERT INTO eth.ancient_headers (block_number, header) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET header = $2"
+	appendAncientHashPgStr     = "INSERT INTO eth.ancient_hashes (block_number, hash) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET hash = $2"
+	appendAncientBodyPgStr     = "INSERT INTO eth.ancient_bodies (block_number, body) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET body = $2"
+	appendAncientReceiptsPgStr = "INSERT INTO eth.ancient_receipts (block_number, receipts) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET receipts = $2"
+	appendAncientTDPgStr       = "INSERT INTO eth.ancient_tds (block_number, td) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET td = $2"
+
+	// ancient truncate Postgres statements
+	truncateAncientHeaderPgStr   = "DELETE FROM eth.ancient_headers WHERE block_number > $1"
+	truncateAncientHashPgStr     = "DELETE FROM eth.ancient_hashes WHERE block_number > $1"
+	truncateAncientBodiesPgStr   = "DELETE FROM eth.ancient_bodies WHERE block_number > $1"
+	truncateAncientReceiptsPgStr = "DELETE FROM eth.ancient_receipts WHERE block_number > $1"
+	truncateAncientTDPgStr       = "DELETE FROM eth.ancient_tds WHERE block_number > $1"
+
+	// ancient size Postgres statement
+	ancientSizePgStr = "SELECT pg_total_relation_size($1)"
+
+	// ancients Postgres statement
+	ancientsPgStr = "SELECT block_number FROM eth.ancient_headers ORDER BY block_number DESC LIMIT 1"
+
+	// ancient has Postgres statements
+	hasAncientHeaderPgStr   = "SELECT exists(SELECT 1 FROM eth.ancient_headers WHERE block_number = $1)"
+	hasAncientHashPgStr     = "SELECT exists(SELECT 1 FROM eth.ancient_hashes WHERE block_number = $1)"
+	hasAncientBodyPgStr     = "SELECT exists(SELECT 1 FROM eth.ancient_bodies WHERE block_number = $1)"
+	hasAncientReceiptsPgStr = "SELECT exists(SELECT 1 FROM eth.ancient_receipts WHERE block_number = $1)"
+	hasAncientTDPgStr       = "SELECT exists(SELECT 1 FROM eth.ancient_tds WHERE block_number = $1)"
+
+	// ancient get Postgres statements
+	getAncientHeaderPgStr   = "SELECT header FROM eth.ancient_headers WHERE block_number = $1"
+	getAncientHashPgStr     = "SELECT hash FROM eth.ancient_hashes WHERE block_number = $1"
+	getAncientBodyPgStr     = "SELECT body FROM eth.ancient_bodies WHERE block_number = $1"
+	getAncientReceiptsPgStr = "SELECT receipts FROM eth.ancient_receipts WHERE block_number = $1"
+	getAncientTDPgStr       = "SELECT td FROM eth.ancient_tds WHERE block_number = $1"
+)
+
+// HasAncient satisfies the ethdb.AncientReader interface
+// HasAncient returns an indicator whether the specified data exists in the ancient store
+func (d *Database) HasAncient(kind string, number uint64) (bool, error) {
+	var pgStr string
+	switch kind {
+	case FreezerHeaderTable:
+		pgStr = hasAncientHeaderPgStr
+	case FreezerHashTable:
+		pgStr = hasAncientHashPgStr
+	case FreezerBodiesTable:
+		pgStr = hasAncientBodyPgStr
+	case FreezerReceiptTable:
+		pgStr = hasAncientReceiptsPgStr
+	case FreezerDifficultyTable:
+		pgStr = hasAncientTDPgStr
+	default:
+		return false, fmt.Errorf("unexpected ancient kind: %s", kind)
+	}
+	has := new(bool)
+	return *has, d.db.Get(has, pgStr, number)
+}
+
+// Ancient satisfies the ethdb.AncientReader interface
+// Ancient retrieves an ancient binary blob from the append-only immutable files
+func (d *Database) Ancient(kind string, number uint64) ([]byte, error) {
+	var pgStr string
+	switch kind {
+	case FreezerHeaderTable:
+		pgStr = getAncientHeaderPgStr
+	case FreezerHashTable:
+		pgStr = getAncientHashPgStr
+	case FreezerBodiesTable:
+		pgStr = getAncientBodyPgStr
+	case FreezerReceiptTable:
+		pgStr = getAncientReceiptsPgStr
+	case FreezerDifficultyTable:
+		pgStr = getAncientTDPgStr
+	default:
+		return nil, fmt.Errorf("unexpected ancient kind: %s", kind)
+	}
+	data := new([]byte)
+	return *data, d.db.Get(data, pgStr, number)
+}
+
+// Ancients satisfies the ethdb.AncientReader interface
+// Ancients returns the ancient item numbers in the ancient store
+func (d *Database) Ancients() (uint64, error) {
+	num := new(uint64)
+	if err := d.db.Get(num, ancientsPgStr); err != nil {
+		if err == sql.ErrNoRows {
+			return 0, nil
+		}
+		return 0, err
+	}
+	return *num, nil
+}
+
+// AncientSize satisfies the ethdb.AncientReader interface
+// AncientSize returns the ancient size of the specified category
+func (d *Database) AncientSize(kind string) (uint64, error) {
+	var tableName string
+	switch kind {
+	case FreezerHeaderTable:
+		tableName = "eth.ancient_headers"
+	case FreezerHashTable:
+		tableName = "eth.ancient_hashes"
+	case FreezerBodiesTable:
+		tableName = "eth.ancient_bodies"
+	case FreezerReceiptTable:
+		tableName = "eth.ancient_receipts"
+	case FreezerDifficultyTable:
+		tableName = "eth.ancient_tds"
+	default:
+		return 0, fmt.Errorf("unexpected ancient kind: %s", kind)
+	}
+	size := new(uint64)
+	return *size, d.db.Get(size, ancientSizePgStr, tableName)
+}
+
+// AppendAncient satisfies the ethdb.AncientWriter interface
+// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
+func (d *Database) AppendAncient(number uint64, hash, header, body, receipts, td []byte) error {
+	// append in batch
+	var err error
+	if d.ancientTx == nil {
+		d.ancientTx, err = d.db.Beginx()
+		if err != nil {
+			return err
+		}
+	}
+	defer func() {
+		if err != nil {
+			if err := d.ancientTx.Rollback(); err != nil {
+				logrus.Error(err)
+				d.ancientTx = nil
+			}
+		}
+	}()
+
+	if _, err := d.ancientTx.Exec(appendAncientHashPgStr, number, hash); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(appendAncientHeaderPgStr, number, header); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(appendAncientBodyPgStr, number, body); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(appendAncientReceiptsPgStr, number, receipts); err != nil {
+		return err
+	}
+	_, err = d.ancientTx.Exec(appendAncientTDPgStr, number, td)
+	return err
+}
+
+// TruncateAncients satisfies the ethdb.AncientWriter interface
+// TruncateAncients discards all but the first n ancient data from the ancient store
+func (d *Database) TruncateAncients(n uint64) error {
+	// truncate in batch
+	var err error
+	if d.ancientTx == nil {
+		d.ancientTx, err = d.db.Beginx()
+		if err != nil {
+			return err
+		}
+	}
+	defer func() {
+		if err != nil {
+			if err := d.ancientTx.Rollback(); err != nil {
+				logrus.Error(err)
+				d.ancientTx = nil
+			}
+		}
+	}()
+	if _, err := d.ancientTx.Exec(truncateAncientHeaderPgStr, n); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(truncateAncientHashPgStr, n); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(truncateAncientBodiesPgStr, n); err != nil {
+		return err
+	}
+	if _, err := d.ancientTx.Exec(truncateAncientReceiptsPgStr, n); err != nil {
+		return err
+	}
+	_, err = d.ancientTx.Exec(truncateAncientTDPgStr, n)
+	return err
+}
+
+// Sync satisfies the ethdb.AncientWriter interface
+// Sync flushes all in-memory ancient store data to disk
+func (d *Database) Sync() error {
+	if d.ancientTx == nil {
+		return nil
+	}
+	if err := d.ancientTx.Commit(); err != nil {
+		return err
+	}
+	d.ancientTx = nil
+	return nil
+}
--- a/postgres/ancient_test.go
+++ b/postgres/ancient_test.go
@ -0,0 +1,232 @@
+// VulcanizeDB
+// Copyright © 2019 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb_test
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/rlp"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"github.com/vulcanize/ipfs-ethdb/postgres"
+)
+
+var (
+	ancientDB                ethdb.Database
+	testBlockNumber          uint64 = 1
+	testAncientHeader               = types.Header{Number: big.NewInt(2)}
+	testAncientHeaderRLP, _         = rlp.EncodeToBytes(testHeader2)
+	testAncientHash                 = testAncientHeader.Hash().Bytes()
+	testAncientBodyBytes            = make([]byte, 10000)
+	testAncientReceiptsBytes        = make([]byte, 5000)
+	testAncientTD, _                = new(big.Int).SetString("1000000000000000000000", 10)
+	testAncientTDBytes              = testAncientTD.Bytes()
+)
+
+var _ = Describe("Ancient", func() {
+	BeforeEach(func() {
+		db, err = pgipfsethdb.TestDB()
+		Expect(err).ToNot(HaveOccurred())
+		ancientDB = pgipfsethdb.NewDatabase(db)
+
+	})
+	AfterEach(func() {
+		err = pgipfsethdb.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	Describe("AppendAncient/Sync/Has", func() {
+		It("adds eth objects to the Ancient database and returns whether or not an ancient record exists", func() {
+			hasAncient(testBlockNumber, false)
+
+			err = ancientDB.AppendAncient(testBlockNumber, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
+			Expect(err).ToNot(HaveOccurred())
+
+			hasAncient(testBlockNumber, false)
+
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			hasAncient(testBlockNumber, true)
+		})
+	})
+
+	Describe("AppendAncient/Sync/Ancient", func() {
+		It("adds the eth objects to the Ancient database and returns the ancient objects on request", func() {
+			hasAncient(testBlockNumber, false)
+
+			_, err := ancientDB.Ancient(pgipfsethdb.FreezerHeaderTable, testBlockNumber)
+			Expect(err).To(HaveOccurred())
+			_, err = ancientDB.Ancient(pgipfsethdb.FreezerHashTable, testBlockNumber)
+			Expect(err).To(HaveOccurred())
+			_, err = ancientDB.Ancient(pgipfsethdb.FreezerBodiesTable, testBlockNumber)
+			Expect(err).To(HaveOccurred())
+			_, err = ancientDB.Ancient(pgipfsethdb.FreezerReceiptTable, testBlockNumber)
+			Expect(err).To(HaveOccurred())
+			_, err = ancientDB.Ancient(pgipfsethdb.FreezerDifficultyTable, testBlockNumber)
+			Expect(err).To(HaveOccurred())
+
+			err = ancientDB.AppendAncient(testBlockNumber, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
+			Expect(err).ToNot(HaveOccurred())
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			hasAncient(testBlockNumber, true)
+
+			ancientHeader, err := ancientDB.Ancient(pgipfsethdb.FreezerHeaderTable, testBlockNumber)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientHeader).To(Equal(testAncientHeaderRLP))
+
+			ancientHash, err := ancientDB.Ancient(pgipfsethdb.FreezerHashTable, testBlockNumber)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientHash).To(Equal(testAncientHash))
+
+			ancientBody, err := ancientDB.Ancient(pgipfsethdb.FreezerBodiesTable, testBlockNumber)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientBody).To(Equal(testAncientBodyBytes))
+
+			ancientReceipts, err := ancientDB.Ancient(pgipfsethdb.FreezerReceiptTable, testBlockNumber)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientReceipts).To(Equal(testAncientReceiptsBytes))
+
+			ancientTD, err := ancientDB.Ancient(pgipfsethdb.FreezerDifficultyTable, testBlockNumber)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientTD).To(Equal(testAncientTDBytes))
+		})
+	})
+
+	Describe("AppendAncient/Sync/Ancients", func() {
+		It("returns the height of the ancient database", func() {
+			ancients, err := ancientDB.Ancients()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancients).To(Equal(uint64(0)))
+
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, false)
+				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
+				Expect(err).ToNot(HaveOccurred())
+			}
+
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, true)
+			}
+			ancients, err = ancientDB.Ancients()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancients).To(Equal(uint64(100)))
+		})
+	})
+
+	Describe("AppendAncient/Truncate/Sync", func() {
+		It("truncates the ancient database to the provided height", func() {
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, false)
+				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
+				Expect(err).ToNot(HaveOccurred())
+			}
+
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			err = ancientDB.TruncateAncients(50)
+			Expect(err).ToNot(HaveOccurred())
+
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, true)
+			}
+
+			ancients, err := ancientDB.Ancients()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancients).To(Equal(uint64(100)))
+
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			for i := uint64(0); i <= 100; i++ {
+				if i <= 50 {
+					hasAncient(i, true)
+				} else {
+					hasAncient(i, false)
+				}
+			}
+
+			ancients, err = ancientDB.Ancients()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancients).To(Equal(uint64(50)))
+		})
+	})
+
+	Describe("AppendAncient/Sync/AncientSize", func() {
+		It("adds the eth objects to the Ancient database and returns the ancient objects on request", func() {
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, false)
+				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
+				Expect(err).ToNot(HaveOccurred())
+			}
+
+			err = ancientDB.Sync()
+			Expect(err).ToNot(HaveOccurred())
+
+			for i := uint64(0); i <= 100; i++ {
+				hasAncient(i, true)
+			}
+
+			ancientHeaderSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerHeaderTable)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientHeaderSize).To(Equal(uint64(106496)))
+
+			ancientHashSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerHashTable)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientHashSize).To(Equal(uint64(32768)))
+
+			ancientBodySize, err := ancientDB.AncientSize(pgipfsethdb.FreezerBodiesTable)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientBodySize).To(Equal(uint64(73728)))
+
+			ancientReceiptsSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerReceiptTable)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientReceiptsSize).To(Equal(uint64(65536)))
+
+			ancientTDSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerDifficultyTable)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ancientTDSize).To(Equal(uint64(32768)))
+		})
+	})
+})
+
+func hasAncient(blockNumber uint64, shouldHave bool) {
+	has, err := ancientDB.HasAncient(pgipfsethdb.FreezerHeaderTable, blockNumber)
+	Expect(err).ToNot(HaveOccurred())
+	Expect(has).To(Equal(shouldHave))
+	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerHashTable, blockNumber)
+	Expect(err).ToNot(HaveOccurred())
+	Expect(has).To(Equal(shouldHave))
+	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerBodiesTable, blockNumber)
+	Expect(err).ToNot(HaveOccurred())
+	Expect(has).To(Equal(shouldHave))
+	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerReceiptTable, blockNumber)
+	Expect(err).ToNot(HaveOccurred())
+	Expect(has).To(Equal(shouldHave))
+	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerDifficultyTable, blockNumber)
+	Expect(err).ToNot(HaveOccurred())
+	Expect(has).To(Equal(shouldHave))
+}
--- a/postgres/v1/batch.go
+++ b/postgres/v1/batch.go
@ -17,29 +17,25 @@
 package pgipfsethdb

 import (
-	"math/big"
-
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/jmoiron/sqlx"
 )

-var _ ethdb.Batch = &Batch{}
-
 // Batch is the type that satisfies the ethdb.Batch interface for PG-IPFS Ethereum data using a direct Postgres connection
 type Batch struct {
-	db        *sqlx.DB
-	tx        *sqlx.Tx
-	valueSize int
-
-	blockNumber *big.Int
+	db          *sqlx.DB
+	tx          *sqlx.Tx
+	valueSize   int
+	replayCache map[string][]byte
 }

 // NewBatch returns a ethdb.Batch interface for PG-IPFS
-func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
+func NewBatch(db *sqlx.DB, tx *sqlx.Tx) ethdb.Batch {
 	b := &Batch{
 		db:          db,
 		tx:          tx,
-		blockNumber: blockNumber,
+		replayCache: make(map[string][]byte),
 	}
 	if tx == nil {
 		b.Reset()
@ -51,26 +47,30 @@ func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
 // Put inserts the given value into the key-value data store
 // Key is expected to be the keccak256 hash of value
 func (b *Batch) Put(key []byte, value []byte) (err error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
+	dsKey, prefix, err := DatastoreKeyFromGethKey(key)
 	if err != nil {
 		return err
 	}
-	if _, err = b.tx.Exec(putPgStr, mhKey, value, b.blockNumber.Uint64()); err != nil {
+	if _, err = b.tx.Exec(putPgStr, dsKey, value); err != nil {
+		return err
+	}
+	if _, err = b.tx.Exec(putPreimagePgStr, key, dsKey, prefix); err != nil {
 		return err
 	}
 	b.valueSize += len(value)
+	b.replayCache[common.Bytes2Hex(key)] = value
 	return nil
 }

 // Delete satisfies the ethdb.Batch interface
 // Delete removes the key from the key-value data store
 func (b *Batch) Delete(key []byte) (err error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
+	_, err = b.tx.Exec(deletePgStr, key)
 	if err != nil {
 		return err
 	}
-	_, err = b.tx.Exec(deletePgStr, mhKey)
-	return err
+	delete(b.replayCache, common.Bytes2Hex(key))
+	return nil
 }

 // ValueSize satisfies the ethdb.Batch interface
@ -82,17 +82,32 @@ func (b *Batch) ValueSize() int {

 // Write satisfies the ethdb.Batch interface
 // Write flushes any accumulated data to disk
+// Reset should be called after every write
 func (b *Batch) Write() error {
 	if b.tx == nil {
 		return nil
 	}
-	return b.tx.Commit()
+	if err := b.tx.Commit(); err != nil {
+		return err
+	}
+	b.replayCache = nil
+	return nil
 }

 // Replay satisfies the ethdb.Batch interface
 // Replay replays the batch contents
 func (b *Batch) Replay(w ethdb.KeyValueWriter) error {
-	return errNotSupported
+	if b.tx != nil {
+		b.tx.Rollback()
+		b.tx = nil
+	}
+	for key, value := range b.replayCache {
+		if err := w.Put(common.Hex2Bytes(key), value); err != nil {
+			return err
+		}
+	}
+	b.replayCache = nil
+	return nil
 }

 // Reset satisfies the ethdb.Batch interface
@ -104,5 +119,6 @@ func (b *Batch) Reset() {
 	if err != nil {
 		panic(err)
 	}
+	b.replayCache = make(map[string][]byte)
 	b.valueSize = 0
 }
--- a/postgres/v1/batch_test.go
+++ b/postgres/v1/batch_test.go
@ -18,72 +18,55 @@ package pgipfsethdb_test

 import (
 	"math/big"
-	"time"
-
-	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"

 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/mailgun/groupcache/v2"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"

-	pgipfsethdb "github.com/cerc-io/ipfs-ethdb/v5/postgres/v1"
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/postgres"
 )

 var (
-	batch         ethdb.Batch
-	testHeader2   = types.Header{Number: big.NewInt(2)}
-	testValue2, _ = rlp.EncodeToBytes(testHeader2)
-	testEthKey2   = testHeader2.Hash().Bytes()
+	batch             ethdb.Batch
+	testHeader2       = types.Header{Number: big.NewInt(2)}
+	testValue2, _     = rlp.EncodeToBytes(testHeader2)
+	testKeccakEthKey2 = testHeader2.Hash().Bytes()
 )

 var _ = Describe("Batch", func() {
 	BeforeEach(func() {
-		db, err = shared.TestDB()
+		db, err = pgipfsethdb.TestDB()
 		Expect(err).ToNot(HaveOccurred())
-
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
-
+		database = pgipfsethdb.NewDatabase(db)
 		batch = database.NewBatch()
 	})
 	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
-		err = shared.ResetTestDB(db)
+		err = pgipfsethdb.ResetTestDB(db)
 		Expect(err).ToNot(HaveOccurred())
 	})

 	Describe("Put/Write", func() {
 		It("adds the key-value pair to the batch", func() {
-			_, err = database.Get(testEthKey)
+			_, err = database.Get(testKeccakEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testEthKey2)
+			_, err = database.Get(testKeccakEthKey2)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))

-			err = batch.Put(testEthKey, testValue)
+			err = batch.Put(testKeccakEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testEthKey2, testValue2)
+			err = batch.Put(testKeccakEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())

-			val, err := database.Get(testEthKey)
+			val, err := database.Get(testKeccakEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val).To(Equal(testValue))
-			val2, err := database.Get(testEthKey2)
+			val2, err := database.Get(testKeccakEthKey2)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val2).To(Equal(testValue2))
 		})
@ -91,25 +74,25 @@ var _ = Describe("Batch", func() {

 	Describe("Delete/Reset/Write", func() {
 		It("deletes the key-value pair in the batch", func() {
-			err = batch.Put(testEthKey, testValue)
+			err = batch.Put(testKeccakEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testEthKey2, testValue2)
+			err = batch.Put(testKeccakEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())

 			batch.Reset()
-			err = batch.Delete(testEthKey)
+			err = batch.Delete(testKeccakEthKey)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Delete(testEthKey2)
+			err = batch.Delete(testKeccakEthKey2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())

-			_, err = database.Get(testEthKey)
+			_, err = database.Get(testKeccakEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testEthKey2)
+			_, err = database.Get(testKeccakEthKey2)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 		})
@ -117,9 +100,9 @@ var _ = Describe("Batch", func() {

 	Describe("ValueSize/Reset", func() {
 		It("returns the size of data in the batch queued for write", func() {
-			err = batch.Put(testEthKey, testValue)
+			err = batch.Put(testKeccakEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testEthKey2, testValue2)
+			err = batch.Put(testKeccakEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())
@ -132,4 +115,30 @@ var _ = Describe("Batch", func() {
 			Expect(size).To(Equal(0))
 		})
 	})
+
+	Describe("Replay", func() {
+		It("returns the size of data in the batch queued for write", func() {
+			err = batch.Put(testKeccakEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Put(testKeccakEthKey2, testValue2)
+			Expect(err).ToNot(HaveOccurred())
+
+			_, err = database.Get(testKeccakEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+			_, err = database.Get(testKeccakEthKey2)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = batch.Replay(database)
+			Expect(err).ToNot(HaveOccurred())
+
+			val, err := database.Get(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+			val2, err := database.Get(testKeccakEthKey2)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val2).To(Equal(testValue2))
+		})
+	})
 })
--- a/postgres/database.go
+++ b/postgres/database.go
@ -0,0 +1,222 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/sirupsen/logrus"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/jmoiron/sqlx"
+)
+
+const (
+	hasPgStr         = "SELECT exists(SELECT 1 FROM eth.key_preimages WHERE eth_key = $1)"
+	getPgStr         = "SELECT data FROM public.blocks INNER JOIN eth.key_preimages ON (ipfs_key = blocks.key) WHERE eth_key = $1"
+	putPgStr         = "INSERT INTO public.blocks (key, data) VALUES ($1, $2) ON CONFLICT (key) DO NOTHING"
+	putPreimagePgStr = "INSERT INTO eth.key_preimages (eth_key, ipfs_key, prefix) VALUES ($1, $2, $3) ON CONFLICT (eth_key) DO UPDATE SET (ipfs_key, prefix) = ($2, $3)"
+	deletePgStr      = "DELETE FROM public.blocks USING eth.key_preimages WHERE ipfs_key = blocks.key AND eth_key = $1"
+	dbSizePgStr      = "SELECT pg_database_size(current_database())"
+)
+
+// Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for PG-IPFS Ethereum data using a direct Postgres connection
+type Database struct {
+	db        *sqlx.DB
+	ancientTx *sqlx.Tx
+}
+
+// NewKeyValueStore returns a ethdb.KeyValueStore interface for PG-IPFS
+func NewKeyValueStore(db *sqlx.DB) ethdb.KeyValueStore {
+	return &Database{
+		db: db,
+	}
+}
+
+// NewDatabase returns a ethdb.Database interface for PG-IPFS
+func NewDatabase(db *sqlx.DB) ethdb.Database {
+	return &Database{
+		db: db,
+	}
+}
+
+// Has satisfies the ethdb.KeyValueReader interface
+// Has retrieves if a key is present in the key-value data store
+// Has uses the eth.key_preimages table
+func (d *Database) Has(key []byte) (bool, error) {
+	var exists bool
+	return exists, d.db.Get(&exists, hasPgStr, key)
+}
+
+// Get satisfies the ethdb.KeyValueReader interface
+// Get retrieves the given key if it's present in the key-value data store
+// Get uses the eth.key_preimages table
+func (d *Database) Get(key []byte) ([]byte, error) {
+	var data []byte
+	return data, d.db.Get(&data, getPgStr, key)
+}
+
+// Put satisfies the ethdb.KeyValueWriter interface
+// Put inserts the given value into the key-value data store
+// Key is expected to be the keccak256 hash of value
+// Put inserts the keccak256 key into the eth.key_preimages table
+func (d *Database) Put(key []byte, value []byte) error {
+	dsKey, prefix, err := DatastoreKeyFromGethKey(key)
+	if err != nil {
+		return err
+	}
+	tx, err := d.db.Beginx()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			if err := tx.Rollback(); err != nil {
+				logrus.Error(err)
+			}
+		} else {
+			err = tx.Commit()
+		}
+	}()
+	if _, err = tx.Exec(putPgStr, dsKey, value); err != nil {
+		return err
+	}
+	_, err = tx.Exec(putPreimagePgStr, key, dsKey, prefix)
+	return err
+}
+
+// Delete satisfies the ethdb.KeyValueWriter interface
+// Delete removes the key from the key-value data store
+// Delete uses the eth.key_preimages table
+func (d *Database) Delete(key []byte) error {
+	_, err := d.db.Exec(deletePgStr, key)
+	return err
+}
+
+// DatabaseProperty enum type
+type DatabaseProperty int
+
+const (
+	Unknown DatabaseProperty = iota
+	Size
+	Idle
+	InUse
+	MaxIdleClosed
+	MaxLifetimeClosed
+	MaxOpenConnections
+	OpenConnections
+	WaitCount
+	WaitDuration
+)
+
+// DatabasePropertyFromString helper function
+func DatabasePropertyFromString(property string) (DatabaseProperty, error) {
+	switch strings.ToLower(property) {
+	case "size":
+		return Size, nil
+	case "idle":
+		return Idle, nil
+	case "inuse":
+		return InUse, nil
+	case "maxidleclosed":
+		return MaxIdleClosed, nil
+	case "maxlifetimeclosed":
+		return MaxLifetimeClosed, nil
+	case "maxopenconnections":
+		return MaxOpenConnections, nil
+	case "openconnections":
+		return OpenConnections, nil
+	case "waitcount":
+		return WaitCount, nil
+	case "waitduration":
+		return WaitDuration, nil
+	default:
+		return Unknown, fmt.Errorf("unknown database property")
+	}
+}
+
+// Stat satisfies the ethdb.Stater interface
+// Stat returns a particular internal stat of the database
+func (d *Database) Stat(property string) (string, error) {
+	prop, err := DatabasePropertyFromString(property)
+	if err != nil {
+		return "", err
+	}
+	switch prop {
+	case Size:
+		var byteSize string
+		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
+	case Idle:
+		return string(d.db.Stats().Idle), nil
+	case InUse:
+		return string(d.db.Stats().InUse), nil
+	case MaxIdleClosed:
+		return string(d.db.Stats().MaxIdleClosed), nil
+	case MaxLifetimeClosed:
+		return string(d.db.Stats().MaxLifetimeClosed), nil
+	case MaxOpenConnections:
+		return string(d.db.Stats().MaxOpenConnections), nil
+	case OpenConnections:
+		return string(d.db.Stats().OpenConnections), nil
+	case WaitCount:
+		return string(d.db.Stats().WaitCount), nil
+	case WaitDuration:
+		return d.db.Stats().WaitDuration.String(), nil
+	default:
+		return "", fmt.Errorf("unhandled database property")
+	}
+}
+
+// Compact satisfies the ethdb.Compacter interface
+// Compact flattens the underlying data store for the given key range
+func (d *Database) Compact(start []byte, limit []byte) error {
+	// this leveldb functionality doesn't translate to Postgres
+	return nil
+}
+
+// NewBatch satisfies the ethdb.Batcher interface
+// NewBatch creates a write-only database that buffers changes to its host db
+// until a final write is called
+func (d *Database) NewBatch() ethdb.Batch {
+	return NewBatch(d.db, nil)
+}
+
+// NewIterator creates a binary-alphabetical iterator over the entire keyspace
+// contained within the key-value database.
+func (d *Database) NewIterator() ethdb.Iterator {
+	return NewIterator(nil, nil, d.db)
+}
+
+// NewIteratorWithStart creates a binary-alphabetical iterator over a subset of
+// database content starting at a particular initial key (or after, if it does
+// not exist).
+func (d *Database) NewIteratorWithStart(start []byte) ethdb.Iterator {
+	return NewIterator(start, nil, d.db)
+}
+
+// NewIteratorWithPrefix creates a binary-alphabetical iterator over a subset
+// of database content with a particular key prefix.
+func (d *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
+	return NewIterator(nil, prefix, d.db)
+}
+
+// Close satisfies the io.Closer interface
+// Close closes the db connection
+func (d *Database) Close() error {
+	return d.db.DB.Close()
+}
--- a/postgres/database_test.go
+++ b/postgres/database_test.go
@ -0,0 +1,387 @@
+// VulcanizeDB
+// Copyright © 2019 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb_test
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/jmoiron/sqlx"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/postgres"
+)
+
+var (
+	database         ethdb.Database
+	db               *sqlx.DB
+	err              error
+	testHeader       = types.Header{Number: big.NewInt(1337)}
+	testValue, _     = rlp.EncodeToBytes(testHeader)
+	testKeccakEthKey = testHeader.Hash().Bytes()
+	testMhKey, _     = pgipfsethdb.MultihashKeyFromKeccak256(testKeccakEthKey)
+
+	testPrefixedEthKey = append(append([]byte("prefix"), pgipfsethdb.KeyDelineation...), testKeccakEthKey...)
+	testPrefixedDsKey  = common.Bytes2Hex(testPrefixedEthKey)
+
+	testSuffixedEthKey = append(append(testPrefixedEthKey, pgipfsethdb.KeyDelineation...), []byte("suffix")...)
+	testSuffixedDsKey  = common.Bytes2Hex(testSuffixedEthKey)
+
+	testHeaderEthKey = append(append(append(append(pgipfsethdb.HeaderPrefix, pgipfsethdb.KeyDelineation...),
+		[]byte("number")...), pgipfsethdb.NumberDelineation...), testKeccakEthKey...)
+	testHeaderDsKey = testMhKey
+
+	testPreimageEthKey = append(append(pgipfsethdb.PreimagePrefix, pgipfsethdb.KeyDelineation...), testKeccakEthKey...)
+	testPreimageDsKey  = testMhKey
+)
+
+var _ = Describe("Database", func() {
+	BeforeEach(func() {
+		db, err = pgipfsethdb.TestDB()
+		Expect(err).ToNot(HaveOccurred())
+		database = pgipfsethdb.NewDatabase(db)
+	})
+	AfterEach(func() {
+		err = pgipfsethdb.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	Describe("Has - Keccak keys", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).ToNot(BeTrue())
+		})
+		It("returns true if a key-pair exists in the db", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testKeccakEthKey, testMhKey)
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Has - Prefixed keys", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).ToNot(BeTrue())
+		})
+		It("returns true if a key-pair exists in the db", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testPrefixedDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPrefixedEthKey, testPrefixedDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Has - Suffixed keys", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).ToNot(BeTrue())
+		})
+		It("returns true if a key-pair exists in the db", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testSuffixedDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testSuffixedEthKey, testSuffixedDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Has - Header keys", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).ToNot(BeTrue())
+		})
+		It("returns true if a key-pair exists in the db", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testHeaderDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testHeaderEthKey, testHeaderDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Has - Preimage keys", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).ToNot(BeTrue())
+		})
+		It("returns true if a key-pair exists in the db", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testPreimageDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPreimageEthKey, testPreimageDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Get - Keccak keys", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testKeccakEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+		It("returns the value associated with the key, if the pair exists", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testKeccakEthKey, testMhKey)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Get - Prefixed keys", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testPrefixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+		It("returns the value associated with the key, if the pair exists", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testPrefixedDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPrefixedEthKey, testPrefixedDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Get - Suffixed keys", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testSuffixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+		It("returns the value associated with the key, if the pair exists", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testSuffixedDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testSuffixedEthKey, testSuffixedDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Get - Header keys", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testHeaderEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+		It("returns the value associated with the key, if the pair exists", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testHeaderDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testHeaderEthKey, testHeaderDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Get - Preimage keys", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testPreimageEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+		It("returns the value associated with the key, if the pair exists", func() {
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testPreimageDsKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPreimageEthKey, testPreimageDsKey)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put - Keccak keys", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testKeccakEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testKeccakEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put - Prefixed keys", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testPrefixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testPrefixedEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put - Suffixed keys", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testSuffixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testSuffixedEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put - Header keys", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testHeaderEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testHeaderEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put - Preimage keys", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testPreimageEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testPreimageEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Delete - Keccak keys", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testKeccakEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testKeccakEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testKeccakEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+
+	Describe("Delete - Prefixed keys", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testPrefixedEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testPrefixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testPrefixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+
+	Describe("Delete - Suffixed keys", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testSuffixedEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testSuffixedEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testSuffixedEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+
+	Describe("Delete - Header keys", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testHeaderEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testHeaderEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testHeaderEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+
+	Describe("Delete - Preimage keys", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testPreimageEthKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testPreimageEthKey)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testPreimageEthKey)
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+})
--- a/postgres/db/migrations/00001_create_ipfs_blocks_table.sql
+++ b/postgres/db/migrations/00001_create_ipfs_blocks_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS public.blocks (
+  key TEXT UNIQUE NOT NULL,
+  data BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE public.blocks;
--- a/postgres/db/migrations/00002_create_eth_schema.sql
+++ b/postgres/db/migrations/00002_create_eth_schema.sql
@ -0,0 +1,5 @@
+-- +goose Up
+CREATE SCHEMA eth;
+
+-- +goose Down
+DROP SCHEMA eth;
--- a/postgres/db/migrations/00003_create_eth_key_preimages_table.sql
+++ b/postgres/db/migrations/00003_create_eth_key_preimages_table.sql
@ -0,0 +1,9 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.key_preimages (
+  eth_key BYTEA UNIQUE NOT NULL,
+  prefix BYTEA,
+  ipfs_key TEXT NOT NULL REFERENCES public.blocks (key) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED
+);
+
+-- +goose Down
+DROP TABLE eth.key_preimages;
--- a/postgres/db/migrations/00004_create_eth_ancient_headers_table.sql
+++ b/postgres/db/migrations/00004_create_eth_ancient_headers_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.ancient_headers (
+  block_number BIGINT UNIQUE NOT NULL,
+  header BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE eth.ancient_headers;
--- a/postgres/db/migrations/00005_create_eth_ancient_hashes_table.sql
+++ b/postgres/db/migrations/00005_create_eth_ancient_hashes_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.ancient_hashes (
+  block_number BIGINT UNIQUE NOT NULL,
+  hash BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE eth.ancient_hashes;
--- a/postgres/db/migrations/00006_create_eth_ancient_bodies_table.sql
+++ b/postgres/db/migrations/00006_create_eth_ancient_bodies_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.ancient_bodies (
+  block_number BIGINT UNIQUE NOT NULL,
+  body BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE eth.ancient_bodies;
--- a/postgres/db/migrations/00007_create_eth_ancient_receipts_table.sql
+++ b/postgres/db/migrations/00007_create_eth_ancient_receipts_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.ancient_receipts (
+  block_number BIGINT UNIQUE NOT NULL,
+  receipts BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE eth.ancient_receipts;
--- a/postgres/db/migrations/00008_create_eth_ancient_tds_table.sql
+++ b/postgres/db/migrations/00008_create_eth_ancient_tds_table.sql
@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.ancient_tds (
+  block_number BIGINT UNIQUE NOT NULL,
+  td BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE eth.ancient_tds;
--- a/postgres/doc.md
+++ b/postgres/doc.md
@ -1,6 +1,6 @@
 ## ipfs-ethdb

-IPFS has been [extended](https://github.com/cerc-io/go-ipfs/releases/tag/v0.4.22-alpha) to [use Postgres](https://github.com/cerc-io/go-ipfs-config/releases/tag/v0.0.8-alpha) as a backing [datastore](https://github.com/ipfs/go-ds-sql/tree/master/postgres).
+IPFS has been [extended](https://github.com/vulcanize/go-ipfs/releases/tag/v0.4.22-alpha) to [use Postgres](https://github.com/vulcanize/go-ipfs-config/releases/tag/v0.0.8-alpha) as a backing [datastore](https://github.com/ipfs/go-ds-sql/tree/master/postgres).
 Interfacing directly with the IPFS-backing Postgres database has some advantages over using the blockservice interface.
 Namely, batching of IPFS writes with other Postgres writes and avoiding lock contention on the ipfs repository (lockfile located at the `IPFS_PATH`).
 The downside is that we forgo the block-exchange capabilities of the blockservice, and are only able to fetch data contained in the local datastore.
@ -18,11 +18,11 @@ import (
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/trie"
    "github.com/jmoiron/sqlx"
-    "github.com/cerc-io/ipfs-ethdb/v5/postgres/v1"
+    "github.com/vulcanize/ipfs-ethdb/postgres"
 )

 func main() {
-    connectStr := "postgresql://vdbm:password@localhost:8077/cerc_testing?sslmode=disable"
+    connectStr := "postgresql://localhost:5432/vulcanize_testing?sslmode=disable"
    db, _ := sqlx.Connect("postgres", connectStr)

    kvs := pgipfsethdb.NewKeyValueStore(db)
@ -31,13 +31,9 @@ func main() {
    trieNodeIterator := t.NodeIterator([]byte{})
    // do stuff with trie node iterator

-    database := pgipfsethdb.NewDatabase(db, pgipfsethdb.CacheConfig{
-		Name:           "db",
-		Size:           3000000, // 3MB
-		ExpiryDuration: time.Hour,
-	})
+    database := pgipfsethdb.NewDatabase(db)
    stateDatabase := state.NewDatabase(database)
-    stateDB, _ := state.New(common.Hash{}, stateDatabase, nil)
+    stateDB, _ := state.New(common.Hash{}, stateDatabase)
    stateDBNodeIterator := state.NewNodeIterator(stateDB)
    // do stuff with the statedb node iterator
 }
--- a/postgres/v1/iterator.go
+++ b/postgres/v1/iterator.go
@ -21,17 +21,31 @@ import (
 	"github.com/jmoiron/sqlx"
 )

-var _ ethdb.Iterator = &Iterator{}
+const (
+	initPgStr = `SELECT eth_key, data FROM public.blocks
+				INNER JOIN eth.key_preimages ON (ipfs_key = key)
+				WHERE eth_key = $1`
+	nextPgStr = `SELECT eth_key, data FROM public.blocks
+				INNER JOIN eth.key_preimages ON (ipfs_key = key)
+				WHERE eth_key > $1
+				ORDER BY eth_key LIMIT 1`
+	nextPgStrWithPrefix = `SELECT eth_key, data FROM public.blocks
+				INNER JOIN eth.key_preimages ON (ipfs_key = key)
+				WHERE eth_key > $1 AND prefix = $2 
+				ORDER BY eth_key LIMIT 1`
+)
+
+type nextModel struct {
+	Key   []byte `db:"eth_key"`
+	Value []byte `db:"data"`
+}

 // Iterator is the type that satisfies the ethdb.Iterator interface for PG-IPFS Ethereum data using a direct Postgres connection
-// Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
-// rawdb.InspectDatabase, and the new core/state/snapshot features.
-// This should not be confused with trie.NodeIterator or state.NodeIteraor (which can be constructed
-// from the ethdb.KeyValueStoreand ethdb.Database interfaces)
 type Iterator struct {
-	db                 *sqlx.DB
-	currentKey, prefix []byte
-	err                error
+	db                               *sqlx.DB
+	currentKey, prefix, currentValue []byte
+	err                              error
+	init                             bool
 }

 // NewIterator returns an ethdb.Iterator interface for PG-IPFS
@ -40,6 +54,7 @@ func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
 		db:         db,
 		prefix:     prefix,
 		currentKey: start,
+		init:       start != nil,
 	}
 }

@ -47,9 +62,26 @@ func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
 // Next moves the iterator to the next key/value pair
 // It returns whether the iterator is exhausted
 func (i *Iterator) Next() bool {
-	// this is complicated by the ipfs db keys not being the keccak256 hashes
-	// go-ethereum usage of this method expects the iteration to occur over keccak256 keys
-	panic("implement me: Next")
+	next := new(nextModel)
+	if i.init {
+		i.init = false
+		if err := i.db.Get(next, initPgStr, i.currentKey); err != nil {
+			i.currentKey, i.currentValue, i.err = nil, nil, err
+			return false
+		}
+	} else if i.prefix != nil {
+		if err := i.db.Get(next, nextPgStrWithPrefix, i.currentKey, i.prefix); err != nil {
+			i.currentKey, i.currentValue, i.err = nil, nil, err
+			return false
+		}
+	} else {
+		if err := i.db.Get(next, nextPgStr, i.currentKey); err != nil {
+			i.currentKey, i.currentValue, i.err = nil, nil, err
+			return false
+		}
+	}
+	i.currentKey, i.currentValue, i.err = next.Key, next.Value, nil
+	return true
 }

 // Error satisfies the ethdb.Iterator interface
@ -72,19 +104,12 @@ func (i *Iterator) Key() []byte {
 // The caller should not modify the contents of the returned slice
 // and its contents may change on the next call to Next
 func (i *Iterator) Value() []byte {
-	mhKey, err := MultihashKeyFromKeccak256(i.currentKey)
-	if err != nil {
-		i.err = err
-		return nil
-	}
-	var data []byte
-	i.err = i.db.Get(&data, getPgStr, mhKey)
-	return data
+	return i.currentValue
 }

 // Release satisfies the ethdb.Iterator interface
 // Release releases associated resources
 // Release should always succeed and can be called multiple times without causing error
 func (i *Iterator) Release() {
-	i.db.Close()
+	i.db, i.currentKey, i.currentValue, i.err, i.prefix = nil, nil, nil, nil, nil
 }
--- a/postgres/iterator_test.go
+++ b/postgres/iterator_test.go
@ -0,0 +1,513 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb_test
+
+import (
+	"database/sql"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"github.com/vulcanize/ipfs-ethdb/postgres"
+)
+
+var (
+	iterator            ethdb.Iterator
+	testPrefix          = []byte("testPrefix")
+	testEthKey1         = []byte{'\x01'}
+	testEthKey2         = []byte{'\x01', '\x01'}
+	testEthKey3         = []byte{'\x01', '\x02'}
+	testEthKey4         = []byte{'\x01', '\x0e'}
+	testEthKey5         = []byte{'\x01', '\x02', '\x01'}
+	testEthKey6         = []byte{'\x01', '\x0e', '\x01'}
+	prefixedTestEthKey1 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey1...)
+	prefixedTestEthKey2 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey2...)
+	prefixedTestEthKey3 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey3...)
+	prefixedTestEthKey4 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey4...)
+	prefixedTestEthKey5 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey5...)
+	prefixedTestEthKey6 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey6...)
+	mockValue1          = []byte{1}
+	mockValue2          = []byte{2}
+	mockValue3          = []byte{3}
+	mockValue4          = []byte{4}
+	mockValue5          = []byte{5}
+	mockValue6          = []byte{6}
+)
+
+var _ = Describe("Iterator", func() {
+	BeforeEach(func() {
+		db, err = pgipfsethdb.TestDB()
+		Expect(err).ToNot(HaveOccurred())
+		database = pgipfsethdb.NewDatabase(db)
+		// non-prefixed entries
+		err = database.Put(testEthKey1, mockValue1)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(testEthKey2, mockValue2)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(testEthKey3, mockValue3)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(testEthKey4, mockValue4)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(testEthKey5, mockValue5)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(testEthKey6, mockValue6)
+		Expect(err).ToNot(HaveOccurred())
+		// prefixed entries
+		err = database.Put(prefixedTestEthKey1, mockValue1)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(prefixedTestEthKey2, mockValue2)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(prefixedTestEthKey3, mockValue3)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(prefixedTestEthKey4, mockValue4)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(prefixedTestEthKey5, mockValue5)
+		Expect(err).ToNot(HaveOccurred())
+		err = database.Put(prefixedTestEthKey6, mockValue6)
+		Expect(err).ToNot(HaveOccurred())
+	})
+	AfterEach(func() {
+		err = pgipfsethdb.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	Describe("NewIterator", func() {
+		It("iterates over the entire key-set (prefixed or not)", func() {
+			iterator = database.NewIterator()
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+	})
+
+	Describe("NewIteratorWithPrefix", func() {
+		It("iterates over all db entries that have the provided prefix", func() {
+			iterator = database.NewIteratorWithPrefix(testPrefix)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+
+		It("behaves as no prefix is provided if prefix is nil", func() {
+			iterator = database.NewIteratorWithPrefix(nil)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+
+		It("considers empty but non-nil []byte a valid prefix, which precludes iteration over any other prefixed keys", func() {
+			iterator = database.NewIteratorWithPrefix([]byte{})
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+	})
+
+	Describe("NewIteratorWithStart", func() {
+		It("iterates over the entire key-set (prefixed or not) starting with at the provided path", func() {
+			iterator = database.NewIteratorWithStart(testEthKey2)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
+			Expect(iterator.Value()).To(Equal(mockValue1))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+
+		It("iterates over the entire key-set (prefixed or not) starting with at the provided path", func() {
+			iterator = database.NewIteratorWithStart(prefixedTestEthKey3)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
+			Expect(iterator.Value()).To(Equal(mockValue3))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
+			Expect(iterator.Value()).To(Equal(mockValue5))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
+			Expect(iterator.Value()).To(Equal(mockValue4))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
+			Expect(iterator.Value()).To(Equal(mockValue6))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).ToNot(BeTrue())
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
+		})
+	})
+
+	Describe("Release", func() {
+		It("releases resources associated with the Iterator", func() {
+			iterator = database.NewIteratorWithStart(testEthKey2)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more := iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+
+			iterator.Release()
+			iterator.Release() // check that we don't panic if called multiple times
+
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(BeNil())
+			Expect(iterator.Error()).To(BeNil())
+			Expect(func() { iterator.Next() }).To(Panic()) // check that we panic if we try to use released iterator
+
+			// We can still create a new iterator from the same backing db
+			iterator = database.NewIteratorWithStart(testEthKey2)
+			Expect(iterator.Value()).To(BeNil())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Error()).To(BeNil())
+
+			more = iterator.Next()
+			Expect(more).To(BeTrue())
+			Expect(iterator.Key()).To(Equal(testEthKey2))
+			Expect(iterator.Value()).To(Equal(mockValue2))
+			Expect(iterator.Error()).To(BeNil())
+		})
+	})
+})
--- a/postgres/key_type.go
+++ b/postgres/key_type.go
@ -0,0 +1,64 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb
+
+import "bytes"
+
+type KeyType uint
+
+const (
+	Invalid KeyType = iota
+	Keccak
+	Prefixed
+	Suffixed
+	Header
+	Preimage
+)
+
+var (
+	// keyDelineation is used to delineate the key prefixes and suffixes
+	KeyDelineation = []byte("/")
+
+	// numberDelineation is used to delineate the block number encoded in a key
+	NumberDelineation = []byte(":")
+
+	// Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes).
+	HeaderPrefix   = []byte("h")           // headerPrefix + num (uint64 big endian) + hash -> header
+	PreimagePrefix = []byte("secure-key-") // preimagePrefix + hash -> preimage
+)
+
+// ResolveKeyType returns the key type based on the prefix
+func ResolveKeyType(key []byte) (KeyType, [][]byte) {
+	sk := bytes.Split(key, KeyDelineation)
+
+	switch len(sk) {
+	case 1:
+		return Keccak, sk
+	case 2:
+		switch prefix := sk[0]; {
+		case bytes.Equal(prefix, HeaderPrefix):
+			return Header, bytes.Split(sk[1], NumberDelineation)
+		case bytes.Equal(prefix, PreimagePrefix):
+			return Preimage, sk
+		default:
+			return Prefixed, sk
+		}
+	case 3:
+		return Suffixed, sk
+	}
+	return Invalid, sk
+}
--- a/postgres/v0/postgres_suite_test.go
+++ b/postgres/v0/postgres_suite_test.go
--- a/postgres/shared/util.go
+++ b/postgres/shared/util.go
@ -1,42 +0,0 @@
-// VulcanizeDB
-// Copyright © 2023 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package shared
-
-import (
-	"github.com/jmoiron/sqlx"
-)
-
-/*
-	Hostname:     "localhost",
-	Port:         8077,
-	DatabaseName: "cerc_testing",
-	Username:     "vdbm",
-	Password:     "password",
-*/
-// TestDB connect to the testing database
-// it assumes the database has the IPFS ipld.blocks table present
-// DO NOT use a production db for the test db, as it will remove all contents of the ipld.blocks table
-func TestDB() (*sqlx.DB, error) {
-	connectStr := "postgresql://vdbm:password@localhost:8077/cerc_testing?sslmode=disable"
-	return sqlx.Connect("postgres", connectStr)
-}
-
-// ResetTestDB drops all rows in the test db ipld.blocks table
-func ResetTestDB(db *sqlx.DB) error {
-	_, err := db.Exec("TRUNCATE ipld.blocks CASCADE")
-	return err
-}
--- a/postgres/test_helpers.go
+++ b/postgres/test_helpers.go
@ -0,0 +1,67 @@
+// VulcanizeDB
+// Copyright © 2020 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package pgipfsethdb
+
+import (
+	"github.com/jmoiron/sqlx"
+)
+
+// TestDB connect to the testing database
+// it assumes the database has the IPFS public.blocks table present
+// DO NOT use a production db for the test db, as it will remove all contents of the public.blocks table
+func TestDB() (*sqlx.DB, error) {
+	connectStr := "postgresql://localhost:5432/vulcanize_testing?sslmode=disable"
+	return sqlx.Connect("postgres", connectStr)
+}
+
+// ResetTestDB drops all rows in the test db public.blocks table
+func ResetTestDB(db *sqlx.DB) error {
+	tx, err := db.Beginx()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if p := recover(); p != nil {
+			tx.Rollback()
+			panic(p)
+		} else if err != nil {
+			tx.Rollback()
+		} else {
+			err = tx.Commit()
+		}
+	}()
+	if _, err := tx.Exec("TRUNCATE public.blocks CASCADE"); err != nil {
+		return err
+	}
+	if _, err := tx.Exec("TRUNCATE eth.key_preimages CASCADE"); err != nil {
+		return err
+	}
+	if _, err := tx.Exec("TRUNCATE eth.ancient_headers CASCADE"); err != nil {
+		return err
+	}
+	if _, err := tx.Exec("TRUNCATE eth.ancient_hashes CASCADE"); err != nil {
+		return err
+	}
+	if _, err := tx.Exec("TRUNCATE eth.ancient_bodies CASCADE"); err != nil {
+		return err
+	}
+	if _, err := tx.Exec("TRUNCATE eth.ancient_receipts CASCADE"); err != nil {
+		return err
+	}
+	_, err = tx.Exec("TRUNCATE eth.ancient_tds CASCADE")
+	return err
+}
--- a/postgres/v1/util.go
+++ b/postgres/v1/util.go
@ -17,8 +17,11 @@
 package pgipfsethdb

 import (
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	dshelp "github.com/ipfs/go-ipfs-ds-help"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ipfs/go-ipfs-blockstore"
+	"github.com/ipfs/go-ipfs-ds-help"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"
 )
@ -32,3 +35,27 @@ func MultihashKeyFromKeccak256(h []byte) (string, error) {
 	dbKey := dshelp.MultihashToDsKey(mh)
 	return blockstore.BlockPrefix.String() + dbKey.String(), nil
 }
+
+// DatastoreKeyFromGethKey returns the public.blocks key from the provided geth key
+// It also returns the key's prefix, if it has one
+func DatastoreKeyFromGethKey(h []byte) (string, []byte, error) {
+	keyType, keyComponents := ResolveKeyType(h)
+	switch keyType {
+	case Keccak:
+		mhKey, err := MultihashKeyFromKeccak256(h)
+		return mhKey, nil, err
+	case Header:
+		mhKey, err := MultihashKeyFromKeccak256(keyComponents[1])
+		return mhKey, keyComponents[0], err
+	case Preimage:
+		mhKey, err := MultihashKeyFromKeccak256(keyComponents[1])
+		return mhKey, keyComponents[0], err
+	case Prefixed, Suffixed:
+		// This data is not mapped by hash => content by geth, store it using the prefixed/suffixed key directly
+		// I.e. the public.blocks datastore key == the hex representation of the geth key
+		// Alternatively, decompose the data and derive the hash
+		return common.Bytes2Hex(h), keyComponents[0], nil
+	default:
+		return "", nil, fmt.Errorf("invalid formatting of database key: %x", h)
+	}
+}
--- a/postgres/v0/batch.go
+++ b/postgres/v0/batch.go
@ -1,117 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"math/big"
-
-	"github.com/ipfs/go-cid"
-
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/jmoiron/sqlx"
-)
-
-var _ ethdb.Batch = &Batch{}
-
-// Batch is the type that satisfies the ethdb.Batch interface for PG-IPFS Ethereum data using a direct Postgres connection
-type Batch struct {
-	db        *sqlx.DB
-	tx        *sqlx.Tx
-	valueSize int
-
-	blockNumber *big.Int
-}
-
-// NewBatch returns a ethdb.Batch interface for PG-IPFS
-func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
-	b := &Batch{
-		db:          db,
-		tx:          tx,
-		blockNumber: blockNumber,
-	}
-	if tx == nil {
-		b.Reset()
-	}
-	return b
-}
-
-// Put satisfies the ethdb.Batch interface
-// Put inserts the given value into the key-value data store
-// Key is expected to be a fully formulated cid key
-// TODO: note, now that we expected a cid we could route to the "cids" tables based on prefix instead of to ipld.blocks
-// but is it better to handle this routing here, or use a completely different interface since we already have to refactor
-// at levels above this package in order to pass in cids instead of raw keccak256 hashes
-func (b *Batch) Put(cidBytes []byte, value []byte) (err error) {
-	// cast and resolve strings from cid.Cast
-	// this will assert that we have a correctly formatted CID
-	// and will handle the different string encodings for v0 and v1 CIDs
-	// (note that this v0 vs v1 is different from the blockstore v0 vs v1)
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return err
-	}
-	if _, err = b.tx.Exec(putPgStr, c.String(), value, b.blockNumber.Uint64()); err != nil {
-		return err
-	}
-	b.valueSize += len(value)
-	return nil
-}
-
-// Delete satisfies the ethdb.Batch interface
-// Delete removes the key from the key-value data store
-func (b *Batch) Delete(cidBytes []byte) (err error) {
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return err
-	}
-	_, err = b.tx.Exec(deletePgStr, c.String())
-	return err
-}
-
-// ValueSize satisfies the ethdb.Batch interface
-// ValueSize retrieves the amount of data queued up for writing
-// The returned value is the total byte length of all data queued to write
-func (b *Batch) ValueSize() int {
-	return b.valueSize
-}
-
-// Write satisfies the ethdb.Batch interface
-// Write flushes any accumulated data to disk
-func (b *Batch) Write() error {
-	if b.tx == nil {
-		return nil
-	}
-	return b.tx.Commit()
-}
-
-// Replay satisfies the ethdb.Batch interface
-// Replay replays the batch contents
-func (b *Batch) Replay(w ethdb.KeyValueWriter) error {
-	return errNotSupported
-}
-
-// Reset satisfies the ethdb.Batch interface
-// Reset resets the batch for reuse
-// This should be called after every write
-func (b *Batch) Reset() {
-	var err error
-	b.tx, err = b.db.Beginx()
-	if err != nil {
-		panic(err)
-	}
-	b.valueSize = 0
-}
--- a/postgres/v0/batch_test.go
+++ b/postgres/v0/batch_test.go
@ -1,138 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"math/big"
-	"time"
-
-	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
-
-	"github.com/ipfs/go-cid"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/mailgun/groupcache/v2"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-
-	pgipfsethdb "github.com/cerc-io/ipfs-ethdb/v5/postgres/v0"
-)
-
-var (
-	batch         ethdb.Batch
-	testHeader2   = types.Header{Number: big.NewInt(2)}
-	testValue2, _ = rlp.EncodeToBytes(testHeader2)
-	testEthKey2   = testHeader2.Hash().Bytes()
-	testCID2, _   = pgipfsethdb.CIDFromKeccak256(testEthKey2, cid.EthBlock)
-)
-
-var _ = Describe("Batch", func() {
-	BeforeEach(func() {
-		db, err = shared.TestDB()
-		Expect(err).ToNot(HaveOccurred())
-
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
-
-		batch = database.NewBatch()
-	})
-	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
-		err = shared.ResetTestDB(db)
-		Expect(err).ToNot(HaveOccurred())
-	})
-
-	Describe("Put/Write", func() {
-		It("adds the key-value pair to the batch", func() {
-			_, err = database.Get(testCID.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testCID2.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = batch.Put(testCID.Bytes(), testValue)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testCID2.Bytes(), testValue2)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Write()
-			Expect(err).ToNot(HaveOccurred())
-
-			val, err := database.Get(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-			val2, err := database.Get(testCID2.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val2).To(Equal(testValue2))
-		})
-	})
-
-	Describe("Delete/Reset/Write", func() {
-		It("deletes the key-value pair in the batch", func() {
-			err = batch.Put(testCID.Bytes(), testValue)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testCID2.Bytes(), testValue2)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Write()
-			Expect(err).ToNot(HaveOccurred())
-
-			batch.Reset()
-			err = batch.Delete(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Delete(testCID2.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Write()
-			Expect(err).ToNot(HaveOccurred())
-
-			_, err = database.Get(testCID.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testCID2.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-
-	Describe("ValueSize/Reset", func() {
-		It("returns the size of data in the batch queued for write", func() {
-			err = batch.Put(testCID.Bytes(), testValue)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testCID2.Bytes(), testValue2)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Write()
-			Expect(err).ToNot(HaveOccurred())
-
-			size := batch.ValueSize()
-			Expect(size).To(Equal(len(testValue) + len(testValue2)))
-
-			batch.Reset()
-			size = batch.ValueSize()
-			Expect(size).To(Equal(0))
-		})
-	})
-})
--- a/postgres/v0/database.go
+++ b/postgres/v0/database.go
@ -1,365 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"context"
-	"database/sql"
-	"errors"
-	"fmt"
-	"math/big"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/ipfs/go-cid"
-
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
-	log "github.com/sirupsen/logrus"
-)
-
-var errNotSupported = errors.New("this operation is not supported")
-
-var (
-	hasPgStr    = "SELECT exists(select 1 from ipld.blocks WHERE key = $1 LIMIT 1)"
-	getPgStr    = "SELECT data FROM ipld.blocks WHERE key = $1 LIMIT 1"
-	putPgStr    = "INSERT INTO ipld.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
-	deletePgStr = "DELETE FROM ipld.blocks WHERE key = $1"
-	dbSizePgStr = "SELECT pg_database_size(current_database())"
-)
-
-var _ ethdb.Database = &Database{}
-
-// Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for PG-IPFS Ethereum data using a direct Postgres connection
-type Database struct {
-	db    *sqlx.DB
-	cache *groupcache.Group
-
-	BlockNumber *big.Int
-}
-
-func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
-	return 0, errNotSupported
-}
-
-type CacheConfig struct {
-	Name           string
-	Size           int
-	ExpiryDuration time.Duration
-}
-
-// NewKeyValueStore returns a ethdb.KeyValueStore interface for PG-IPFS
-func NewKeyValueStore(db *sqlx.DB, cacheConfig CacheConfig) ethdb.KeyValueStore {
-	database := Database{db: db}
-	database.InitCache(cacheConfig)
-
-	return &database
-}
-
-// NewDatabase returns a ethdb.Database interface for PG-IPFS
-func NewDatabase(db *sqlx.DB, cacheConfig CacheConfig) ethdb.Database {
-	database := Database{db: db}
-	database.InitCache(cacheConfig)
-
-	return &database
-}
-
-func (d *Database) InitCache(cacheConfig CacheConfig) {
-	d.cache = groupcache.NewGroup(cacheConfig.Name, int64(cacheConfig.Size), groupcache.GetterFunc(
-		func(_ context.Context, id string, dest groupcache.Sink) error {
-			val, err := d.dbGet(id)
-
-			if err != nil {
-				return err
-			}
-
-			// Set the value in the groupcache, with expiry
-			if err := dest.SetBytes(val, time.Now().Add(cacheConfig.ExpiryDuration)); err != nil {
-				return err
-			}
-
-			return nil
-		},
-	))
-}
-
-func (d *Database) GetCacheStats() groupcache.Stats {
-	return d.cache.Stats
-}
-
-// Has satisfies the ethdb.KeyValueReader interface
-// Has retrieves if a cid is present in the key-value data store
-func (d *Database) Has(cidBytes []byte) (bool, error) {
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return false, err
-	}
-	var exists bool
-	return exists, d.db.Get(&exists, hasPgStr, c.String())
-}
-
-// Get retrieves the given key if it's present in the key-value data store
-func (d *Database) dbGet(key string) ([]byte, error) {
-	var data []byte
-	err := d.db.Get(&data, getPgStr, key)
-	if err == sql.ErrNoRows {
-		log.Warn("Database miss for key ", key)
-	}
-
-	return data, err
-}
-
-// Get satisfies the ethdb.KeyValueReader interface
-// Get retrieves the given cid if it's present in the key-value data store
-func (d *Database) Get(cidBytes []byte) ([]byte, error) {
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-
-	var data []byte
-	return data, d.cache.Get(ctx, c.String(), groupcache.AllocatingByteSliceSink(&data))
-}
-
-// Put satisfies the ethdb.KeyValueWriter interface
-// Put inserts the given value into the key-value data store
-// Key is expected to be a fully formulated cis of value
-func (d *Database) Put(cidBytes []byte, value []byte) error {
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return err
-	}
-	_, err = d.db.Exec(putPgStr, c.String(), value, d.BlockNumber.Uint64())
-	return err
-}
-
-// Delete satisfies the ethdb.KeyValueWriter interface
-// Delete removes the cid from the key-value data store
-func (d *Database) Delete(cidBytes []byte) error {
-	c, err := cid.Cast(cidBytes)
-	if err != nil {
-		return err
-	}
-	cidString := c.String()
-
-	_, err = d.db.Exec(deletePgStr, cidString)
-	if err != nil {
-		return err
-	}
-
-	// Remove from cache.
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-	err = d.cache.Remove(ctx, cidString)
-
-	return err
-}
-
-// DatabaseProperty enum type
-type DatabaseProperty int
-
-const (
-	Unknown DatabaseProperty = iota
-	Size
-	Idle
-	InUse
-	MaxIdleClosed
-	MaxLifetimeClosed
-	MaxOpenConnections
-	OpenConnections
-	WaitCount
-	WaitDuration
-)
-
-// DatabasePropertyFromString helper function
-func DatabasePropertyFromString(property string) (DatabaseProperty, error) {
-	switch strings.ToLower(property) {
-	case "size":
-		return Size, nil
-	case "idle":
-		return Idle, nil
-	case "inuse":
-		return InUse, nil
-	case "maxidleclosed":
-		return MaxIdleClosed, nil
-	case "maxlifetimeclosed":
-		return MaxLifetimeClosed, nil
-	case "maxopenconnections":
-		return MaxOpenConnections, nil
-	case "openconnections":
-		return OpenConnections, nil
-	case "waitcount":
-		return WaitCount, nil
-	case "waitduration":
-		return WaitDuration, nil
-	default:
-		return Unknown, fmt.Errorf("unknown database property")
-	}
-}
-
-// Stat satisfies the ethdb.Stater interface
-// Stat returns a particular internal stat of the database
-func (d *Database) Stat(property string) (string, error) {
-	prop, err := DatabasePropertyFromString(property)
-	if err != nil {
-		return "", err
-	}
-	switch prop {
-	case Size:
-		var byteSize string
-		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
-	case Idle:
-		return strconv.Itoa(d.db.Stats().Idle), nil
-	case InUse:
-		return strconv.Itoa(d.db.Stats().InUse), nil
-	case MaxIdleClosed:
-		return strconv.FormatInt(d.db.Stats().MaxIdleClosed, 10), nil
-	case MaxLifetimeClosed:
-		return strconv.FormatInt(d.db.Stats().MaxLifetimeClosed, 10), nil
-	case MaxOpenConnections:
-		return strconv.Itoa(d.db.Stats().MaxOpenConnections), nil
-	case OpenConnections:
-		return strconv.Itoa(d.db.Stats().OpenConnections), nil
-	case WaitCount:
-		return strconv.FormatInt(d.db.Stats().WaitCount, 10), nil
-	case WaitDuration:
-		return d.db.Stats().WaitDuration.String(), nil
-	default:
-		return "", fmt.Errorf("unhandled database property")
-	}
-}
-
-// Compact satisfies the ethdb.Compacter interface
-// Compact flattens the underlying data store for the given key range
-func (d *Database) Compact(start []byte, limit []byte) error {
-	return errNotSupported
-}
-
-// NewBatch satisfies the ethdb.Batcher interface
-// NewBatch creates a write-only database that buffers changes to its host db
-// until a final write is called
-func (d *Database) NewBatch() ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
-}
-
-// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
-}
-
-// NewIterator satisfies the ethdb.Iteratee interface
-// it creates a binary-alphabetical iterator over a subset
-// of database content with a particular key prefix, starting at a particular
-// initial key (or after, if it does not exist).
-//
-// Note: This method assumes that the prefix is NOT part of the start, so there's
-// no need for the caller to prepend the prefix to the start
-func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
-	return NewIterator(start, prefix, d.db)
-}
-
-// Close satisfies the io.Closer interface.
-// Close closes the db connection and deregisters from groupcache.
-func (d *Database) Close() error {
-	groupcache.DeregisterGroup(d.cache.Name())
-	return d.db.DB.Close()
-}
-
-// HasAncient satisfies the ethdb.AncientReader interface
-// HasAncient returns an indicator whether the specified data exists in the ancient store
-func (d *Database) HasAncient(kind string, number uint64) (bool, error) {
-	return false, errNotSupported
-}
-
-// Ancient satisfies the ethdb.AncientReader interface
-// Ancient retrieves an ancient binary blob from the append-only immutable files
-func (d *Database) Ancient(kind string, number uint64) ([]byte, error) {
-	return nil, errNotSupported
-}
-
-// Ancients satisfies the ethdb.AncientReader interface
-// Ancients returns the ancient item numbers in the ancient store
-func (d *Database) Ancients() (uint64, error) {
-	return 0, errNotSupported
-}
-
-// Tail satisfies the ethdb.AncientReader interface.
-// Tail returns the number of first stored item in the freezer.
-func (d *Database) Tail() (uint64, error) {
-	return 0, errNotSupported
-}
-
-// AncientSize satisfies the ethdb.AncientReader interface
-// AncientSize returns the ancient size of the specified category
-func (d *Database) AncientSize(kind string) (uint64, error) {
-	return 0, errNotSupported
-}
-
-// AncientRange retrieves all the items in a range, starting from the index 'start'.
-// It will return
-//  - at most 'count' items,
-//  - at least 1 item (even if exceeding the maxBytes), but will otherwise
-//   return as many items as fit into maxBytes.
-func (d *Database) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
-	return nil, errNotSupported
-}
-
-// ReadAncients applies the provided AncientReader function
-func (d *Database) ReadAncients(fn func(ethdb.AncientReaderOp) error) (err error) {
-	return errNotSupported
-}
-
-// TruncateHead satisfies the ethdb.AncientWriter interface.
-// TruncateHead discards all but the first n ancient data from the ancient store.
-func (d *Database) TruncateHead(n uint64) error {
-	return errNotSupported
-}
-
-// TruncateTail satisfies the ethdb.AncientWriter interface.
-// TruncateTail discards the first n ancient data from the ancient store.
-func (d *Database) TruncateTail(n uint64) error {
-	return errNotSupported
-}
-
-// Sync satisfies the ethdb.AncientWriter interface
-// Sync flushes all in-memory ancient store data to disk
-func (d *Database) Sync() error {
-	return errNotSupported
-}
-
-// MigrateTable satisfies the ethdb.AncientWriter interface.
-// MigrateTable processes and migrates entries of a given table to a new format.
-func (d *Database) MigrateTable(string, func([]byte) ([]byte, error)) error {
-	return errNotSupported
-}
-
-// NewSnapshot satisfies the ethdb.Snapshotter interface.
-// NewSnapshot creates a database snapshot based on the current state.
-func (d *Database) NewSnapshot() (ethdb.Snapshot, error) {
-	return nil, errNotSupported
-}
-
-// AncientDatadir returns an error as we don't have a backing chain freezer.
-func (d *Database) AncientDatadir() (string, error) {
-	return "", errNotSupported
-}
--- a/postgres/v0/database_test.go
+++ b/postgres/v0/database_test.go
@ -1,133 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"math/big"
-	"time"
-
-	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
-
-	"github.com/ipfs/go-cid"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-
-	pgipfsethdb "github.com/cerc-io/ipfs-ethdb/v5/postgres/v0"
-)
-
-var (
-	database        ethdb.Database
-	db              *sqlx.DB
-	err             error
-	testBlockNumber = big.NewInt(1337)
-	testHeader      = types.Header{Number: testBlockNumber}
-	testValue, _    = rlp.EncodeToBytes(testHeader)
-	testEthKey      = testHeader.Hash().Bytes()
-	testCID, _      = pgipfsethdb.CIDFromKeccak256(testEthKey, cid.EthBlock)
-)
-
-var _ = Describe("Database", func() {
-	BeforeEach(func() {
-		db, err = shared.TestDB()
-		Expect(err).ToNot(HaveOccurred())
-
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
-	})
-	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
-		err = shared.ResetTestDB(db)
-		Expect(err).ToNot(HaveOccurred())
-		err = db.Close()
-		Expect(err).ToNot(HaveOccurred())
-	})
-
-	Describe("Has", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).ToNot(BeTrue())
-		})
-		It("returns true if a key-pair exists in the db", func() {
-			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testCID.String(), testValue, testBlockNumber.Uint64())
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Get", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testCID.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-		It("returns the value associated with the key, if the pair exists", func() {
-			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testCID.String(), testValue, testBlockNumber.Uint64())
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testCID.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testCID.Bytes(), testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Delete", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testCID.Bytes(), testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testCID.Bytes())
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testCID.Bytes())
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-})
--- a/postgres/v0/iterator.go
+++ b/postgres/v0/iterator.go
@ -1,91 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ipfs/go-cid"
-	"github.com/jmoiron/sqlx"
-)
-
-var _ ethdb.Iterator = &Iterator{}
-
-// Iterator is the type that satisfies the ethdb.Iterator interface for PG-IPFS Ethereum data using a direct Postgres connection
-// Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
-// rawdb.InspectDatabase, and the new core/state/snapshot features.
-// This should not be confused with trie.NodeIterator or state.NodeIteraor (which can be constructed
-// from the ethdb.KeyValueStoreand ethdb.Database interfaces)
-type Iterator struct {
-	db                 *sqlx.DB
-	currentKey, prefix []byte
-	err                error
-}
-
-// NewIterator returns an ethdb.Iterator interface for PG-IPFS
-func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
-	return &Iterator{
-		db:         db,
-		prefix:     prefix,
-		currentKey: start,
-	}
-}
-
-// Next satisfies the ethdb.Iterator interface
-// Next moves the iterator to the next key/value pair
-// It returns whether the iterator is exhausted
-func (i *Iterator) Next() bool {
-	// this is complicated by the ipfs db keys not being the keccak256 hashes
-	// go-ethereum usage of this method expects the iteration to occur over keccak256 keys
-	panic("implement me: Next")
-}
-
-// Error satisfies the ethdb.Iterator interface
-// Error returns any accumulated error
-// Exhausting all the key/value pairs is not considered to be an error
-func (i *Iterator) Error() error {
-	return i.err
-}
-
-// Key satisfies the ethdb.Iterator interface
-// Key returns the key of the current key/value pair, or nil if done
-// The caller should not modify the contents of the returned slice
-// and its contents may change on the next call to Next
-func (i *Iterator) Key() []byte {
-	return i.currentKey
-}
-
-// Value satisfies the ethdb.Iterator interface
-// Value returns the value of the current key/value pair, or nil if done
-// The caller should not modify the contents of the returned slice
-// and its contents may change on the next call to Next
-func (i *Iterator) Value() []byte {
-	c, err := cid.Cast(i.currentKey)
-	if err != nil {
-		i.err = err
-		return nil
-	}
-	var data []byte
-	i.err = i.db.Get(&data, getPgStr, c)
-	return data
-}
-
-// Release satisfies the ethdb.Iterator interface
-// Release releases associated resources
-// Release should always succeed and can be called multiple times without causing error
-func (i *Iterator) Release() {
-	i.db.Close()
-}
--- a/postgres/v0/util.go
+++ b/postgres/v0/util.go
@ -1,32 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"github.com/ipfs/go-cid"
-	_ "github.com/lib/pq" //postgres driver
-	"github.com/multiformats/go-multihash"
-)
-
-// CIDFromKeccak256 converts keccak256 hash bytes into a v1 cid
-func CIDFromKeccak256(hash []byte, codecType uint64) (cid.Cid, error) {
-	mh, err := multihash.Encode(hash, multihash.KECCAK_256)
-	if err != nil {
-		return cid.Cid{}, err
-	}
-	return cid.NewCidV1(codecType, mh), nil
-}
--- a/postgres/v1/database.go
+++ b/postgres/v1/database.go
@ -1,367 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"context"
-	"database/sql"
-	"errors"
-	"fmt"
-	"math/big"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
-	log "github.com/sirupsen/logrus"
-)
-
-var errNotSupported = errors.New("this operation is not supported")
-
-var (
-	hasPgStr    = "SELECT exists(select 1 from ipld.blocks WHERE key = $1 LIMIT 1)"
-	getPgStr    = "SELECT data FROM ipld.blocks WHERE key = $1 LIMIT 1"
-	putPgStr    = "INSERT INTO ipld.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
-	deletePgStr = "DELETE FROM ipld.blocks WHERE key = $1"
-	dbSizePgStr = "SELECT pg_database_size(current_database())"
-
-	DefaultCacheConfig = CacheConfig{
-		Name:           "db",
-		Size:           3000000, // 3MB
-		ExpiryDuration: time.Hour,
-	}
-)
-
-var _ ethdb.Database = &Database{}
-
-// Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for PG-IPFS Ethereum data using a direct Postgres connection
-type Database struct {
-	db    *sqlx.DB
-	cache *groupcache.Group
-
-	BlockNumber *big.Int
-}
-
-func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
-	return 0, errNotSupported
-}
-
-type CacheConfig struct {
-	Name           string
-	Size           int
-	ExpiryDuration time.Duration
-}
-
-// NewKeyValueStore returns a ethdb.KeyValueStore interface for PG-IPFS
-func NewKeyValueStore(db *sqlx.DB, cacheConfig CacheConfig) ethdb.KeyValueStore {
-	database := Database{db: db}
-	database.InitCache(cacheConfig)
-
-	return &database
-}
-
-// NewDatabase returns a ethdb.Database interface for PG-IPFS
-func NewDatabase(db *sqlx.DB, cacheConfig CacheConfig) ethdb.Database {
-	database := Database{db: db}
-	database.InitCache(cacheConfig)
-
-	return &database
-}
-
-func (d *Database) InitCache(cacheConfig CacheConfig) {
-	d.cache = groupcache.NewGroup(cacheConfig.Name, int64(cacheConfig.Size), groupcache.GetterFunc(
-		func(_ context.Context, id string, dest groupcache.Sink) error {
-			val, err := d.dbGet(id)
-
-			if err != nil {
-				return err
-			}
-
-			// Set the value in the groupcache, with expiry
-			if err := dest.SetBytes(val, time.Now().Add(cacheConfig.ExpiryDuration)); err != nil {
-				return err
-			}
-
-			return nil
-		},
-	))
-}
-
-func (d *Database) GetCacheStats() groupcache.Stats {
-	return d.cache.Stats
-}
-
-// Has satisfies the ethdb.KeyValueReader interface
-// Has retrieves if a key is present in the key-value data store
-func (d *Database) Has(key []byte) (bool, error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return false, err
-	}
-	var exists bool
-	return exists, d.db.Get(&exists, hasPgStr, mhKey)
-}
-
-// Get retrieves the given key if it's present in the key-value data store
-func (d *Database) dbGet(key string) ([]byte, error) {
-	var data []byte
-	err := d.db.Get(&data, getPgStr, key)
-	if err == sql.ErrNoRows {
-		log.Warn("Database miss for key", key)
-	}
-
-	return data, err
-}
-
-// Get satisfies the ethdb.KeyValueReader interface
-// Get retrieves the given key if it's present in the key-value data store
-func (d *Database) Get(key []byte) ([]byte, error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return nil, err
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-
-	var data []byte
-	return data, d.cache.Get(ctx, mhKey, groupcache.AllocatingByteSliceSink(&data))
-}
-
-// Put satisfies the ethdb.KeyValueWriter interface
-// Put inserts the given value into the key-value data store
-// Key is expected to be the keccak256 hash of value
-func (d *Database) Put(key []byte, value []byte) error {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return err
-	}
-	_, err = d.db.Exec(putPgStr, mhKey, value, d.BlockNumber.Uint64())
-	return err
-}
-
-// Delete satisfies the ethdb.KeyValueWriter interface
-// Delete removes the key from the key-value data store
-func (d *Database) Delete(key []byte) error {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return err
-	}
-
-	_, err = d.db.Exec(deletePgStr, mhKey)
-	if err != nil {
-		return err
-	}
-
-	// Remove from cache.
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-	err = d.cache.Remove(ctx, mhKey)
-
-	return err
-}
-
-// DatabaseProperty enum type
-type DatabaseProperty int
-
-const (
-	Unknown DatabaseProperty = iota
-	Size
-	Idle
-	InUse
-	MaxIdleClosed
-	MaxLifetimeClosed
-	MaxOpenConnections
-	OpenConnections
-	WaitCount
-	WaitDuration
-)
-
-// DatabasePropertyFromString helper function
-func DatabasePropertyFromString(property string) (DatabaseProperty, error) {
-	switch strings.ToLower(property) {
-	case "size":
-		return Size, nil
-	case "idle":
-		return Idle, nil
-	case "inuse":
-		return InUse, nil
-	case "maxidleclosed":
-		return MaxIdleClosed, nil
-	case "maxlifetimeclosed":
-		return MaxLifetimeClosed, nil
-	case "maxopenconnections":
-		return MaxOpenConnections, nil
-	case "openconnections":
-		return OpenConnections, nil
-	case "waitcount":
-		return WaitCount, nil
-	case "waitduration":
-		return WaitDuration, nil
-	default:
-		return Unknown, fmt.Errorf("unknown database property")
-	}
-}
-
-// Stat satisfies the ethdb.Stater interface
-// Stat returns a particular internal stat of the database
-func (d *Database) Stat(property string) (string, error) {
-	prop, err := DatabasePropertyFromString(property)
-	if err != nil {
-		return "", err
-	}
-	switch prop {
-	case Size:
-		var byteSize string
-		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
-	case Idle:
-		return strconv.Itoa(d.db.Stats().Idle), nil
-	case InUse:
-		return strconv.Itoa(d.db.Stats().InUse), nil
-	case MaxIdleClosed:
-		return strconv.FormatInt(d.db.Stats().MaxIdleClosed, 10), nil
-	case MaxLifetimeClosed:
-		return strconv.FormatInt(d.db.Stats().MaxLifetimeClosed, 10), nil
-	case MaxOpenConnections:
-		return strconv.Itoa(d.db.Stats().MaxOpenConnections), nil
-	case OpenConnections:
-		return strconv.Itoa(d.db.Stats().OpenConnections), nil
-	case WaitCount:
-		return strconv.FormatInt(d.db.Stats().WaitCount, 10), nil
-	case WaitDuration:
-		return d.db.Stats().WaitDuration.String(), nil
-	default:
-		return "", fmt.Errorf("unhandled database property")
-	}
-}
-
-// Compact satisfies the ethdb.Compacter interface
-// Compact flattens the underlying data store for the given key range
-func (d *Database) Compact(start []byte, limit []byte) error {
-	return errNotSupported
-}
-
-// NewBatch satisfies the ethdb.Batcher interface
-// NewBatch creates a write-only database that buffers changes to its host db
-// until a final write is called
-func (d *Database) NewBatch() ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
-}
-
-// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
-}
-
-// NewIterator satisfies the ethdb.Iteratee interface
-// it creates a binary-alphabetical iterator over a subset
-// of database content with a particular key prefix, starting at a particular
-// initial key (or after, if it does not exist).
-//
-// Note: This method assumes that the prefix is NOT part of the start, so there's
-// no need for the caller to prepend the prefix to the start
-func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
-	return NewIterator(start, prefix, d.db)
-}
-
-// Close satisfies the io.Closer interface
-// Close closes the db connection
-func (d *Database) Close() error {
-	return d.db.DB.Close()
-}
-
-// HasAncient satisfies the ethdb.AncientReader interface
-// HasAncient returns an indicator whether the specified data exists in the ancient store
-func (d *Database) HasAncient(kind string, number uint64) (bool, error) {
-	return false, errNotSupported
-}
-
-// Ancient satisfies the ethdb.AncientReader interface
-// Ancient retrieves an ancient binary blob from the append-only immutable files
-func (d *Database) Ancient(kind string, number uint64) ([]byte, error) {
-	return nil, errNotSupported
-}
-
-// Ancients satisfies the ethdb.AncientReader interface
-// Ancients returns the ancient item numbers in the ancient store
-func (d *Database) Ancients() (uint64, error) {
-	return 0, errNotSupported
-}
-
-// Tail satisfies the ethdb.AncientReader interface.
-// Tail returns the number of first stored item in the freezer.
-func (d *Database) Tail() (uint64, error) {
-	return 0, errNotSupported
-}
-
-// AncientSize satisfies the ethdb.AncientReader interface
-// AncientSize returns the ancient size of the specified category
-func (d *Database) AncientSize(kind string) (uint64, error) {
-	return 0, errNotSupported
-}
-
-// AncientRange retrieves all the items in a range, starting from the index 'start'.
-// It will return
-//  - at most 'count' items,
-//  - at least 1 item (even if exceeding the maxBytes), but will otherwise
-//   return as many items as fit into maxBytes.
-func (d *Database) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
-	return nil, errNotSupported
-}
-
-// ReadAncients applies the provided AncientReader function
-func (d *Database) ReadAncients(fn func(ethdb.AncientReaderOp) error) (err error) {
-	return errNotSupported
-}
-
-// TruncateHead satisfies the ethdb.AncientWriter interface.
-// TruncateHead discards all but the first n ancient data from the ancient store.
-func (d *Database) TruncateHead(n uint64) error {
-	return errNotSupported
-}
-
-// TruncateTail satisfies the ethdb.AncientWriter interface.
-// TruncateTail discards the first n ancient data from the ancient store.
-func (d *Database) TruncateTail(n uint64) error {
-	return errNotSupported
-}
-
-// Sync satisfies the ethdb.AncientWriter interface
-// Sync flushes all in-memory ancient store data to disk
-func (d *Database) Sync() error {
-	return errNotSupported
-}
-
-// MigrateTable satisfies the ethdb.AncientWriter interface.
-// MigrateTable processes and migrates entries of a given table to a new format.
-func (d *Database) MigrateTable(string, func([]byte) ([]byte, error)) error {
-	return errNotSupported
-}
-
-// NewSnapshot satisfies the ethdb.Snapshotter interface.
-// NewSnapshot creates a database snapshot based on the current state.
-func (d *Database) NewSnapshot() (ethdb.Snapshot, error) {
-	return nil, errNotSupported
-}
-
-// AncientDatadir returns an error as we don't have a backing chain freezer.
-func (d *Database) AncientDatadir() (string, error) {
-	return "", errNotSupported
-}
--- a/postgres/v1/database_test.go
+++ b/postgres/v1/database_test.go
@ -1,131 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"math/big"
-	"time"
-
-	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-
-	pgipfsethdb "github.com/cerc-io/ipfs-ethdb/v5/postgres/v1"
-)
-
-var (
-	database        ethdb.Database
-	db              *sqlx.DB
-	err             error
-	testBlockNumber = big.NewInt(1337)
-	testHeader      = types.Header{Number: testBlockNumber}
-	testValue, _    = rlp.EncodeToBytes(testHeader)
-	testEthKey      = testHeader.Hash().Bytes()
-	testMhKey, _    = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
-)
-
-var _ = Describe("Database", func() {
-	BeforeEach(func() {
-		db, err = shared.TestDB()
-		Expect(err).ToNot(HaveOccurred())
-
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
-	})
-	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
-		err = shared.ResetTestDB(db)
-		Expect(err).ToNot(HaveOccurred())
-		err = db.Close()
-		Expect(err).ToNot(HaveOccurred())
-	})
-
-	Describe("Has", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).ToNot(BeTrue())
-		})
-		It("returns true if a key-pair exists in the db", func() {
-			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Get", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-		It("returns the value associated with the key, if the pair exists", func() {
-			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Delete", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-})
--- a/postgres/v1/postgres_suite_test.go
+++ b/postgres/v1/postgres_suite_test.go
@ -1,29 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"testing"
-
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-)
-
-func TestPGIPFSETHDB(t *testing.T) {
-	RegisterFailHandler(Fail)
-	RunSpecs(t, "PG-IPFS ethdb test")
-}
--- a/util.go
+++ b/util.go
@ -17,7 +17,7 @@
 package ipfsethdb

 import (
-	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-cid"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"
@ -29,7 +29,7 @@ func Keccak256ToCid(h []byte, codec uint64) (cid.Cid, error) {
 	if err != nil {
 		return cid.Cid{}, err
 	}
-	return cid.NewCidV1(codec, buf), nil
+	return cid.NewCidV1(codec, multihash.Multihash(buf)), nil
 }

 // NewBlock takes a keccak256 hash key and the rlp []byte value it was derived from and creates an ipfs block object
Author	SHA1	Message	Date
Ian Norden	2c4e718a67	no more need for errNotSupported	2020-09-14 10:18:50 -05:00
Ian Norden	961e10bfe8	unit tests for ancient interfaces	2020-09-14 10:15:39 -05:00
Ian Norden	95178107c0	ancient interfaces	2020-09-14 08:53:30 -05:00
Ian Norden	531bc62eff	ancient tables	2020-09-14 08:51:48 -05:00
Ian Norden	07a7a534da	batch.Replay() method	2020-09-14 08:50:51 -05:00
Ian Norden	400f64e7f9	Merge pull request #16 from vulcanize/iterator_support_1.9.10 Iterator support 1.9.10	2020-09-11 09:02:11 -05:00
Ian Norden	6358511b19	finish iterator; unit tests for iterator	2020-09-11 09:00:41 -05:00
Ian Norden	147186e529	cache prefixes for prefix-based iteration	2020-09-11 07:35:41 -05:00
Ian Norden	f5a12a8d3f	Iterator.Next() method	2020-09-10 22:58:56 -05:00
Ian Norden	470bdc5ed4	Merge pull request #15 from vulcanize/iterator_support_1.9.10 Handle different key prefixes	2020-09-10 22:52:59 -05:00
Ian Norden	7c6660a5a6	database tests for different key prefixes	2020-09-09 10:59:48 -05:00
Ian Norden	05648112e9	handle different key prefixes	2020-09-09 10:54:27 -05:00
Ian Norden	dece84dc59	revert to version that works with 1.9.10	2020-09-09 10:54:27 -05:00
Ian Norden	520d6b9b90	Merge pull request #14 from vulcanize/iterator_support_1.9.10 utilize eth key preimage table	2020-09-09 10:04:57 -05:00
Ian Norden	f3751d2b3c	revert to version that works with 1.9.10	2020-09-08 16:24:25 -05:00
Ian Norden	0b26f2cc8b	utilize eth key preimage table	2020-09-08 14:15:35 -05:00