diff --git a/.travis.yml b/.travis.yml
index 5163d693fc757ec0c13d134e9d4cabd6cc7c85d7..a156d3eb5eb29547d593ebf789debd98e2135cf9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ os:
 language: go
 
 go:
-  - 1.11.x
+  - 1.13.x
 
 env:
   global:
diff --git a/arc_cache.go b/arc_cache.go
index 8e88fa81ae149250fabc17372e4c460658456098..e2b930dcadaa614de81dfe9f9e63cdef0113f763 100644
--- a/arc_cache.go
+++ b/arc_cache.go
@@ -59,7 +59,7 @@ func (b *arccache) hasCached(k cid.Cid) (has bool, size int, ok bool) {
 		return false, -1, false
 	}
 
-	h, ok := b.arc.Get(k.KeyString())
+	h, ok := b.arc.Get(string(k.Hash()))
 	if ok {
 		b.hits.Inc()
 		switch h := h.(type) {
@@ -160,11 +160,11 @@ func (b *arccache) HashOnRead(enabled bool) {
 }
 
 func (b *arccache) cacheHave(c cid.Cid, have bool) {
-	b.arc.Add(c.KeyString(), cacheHave(have))
+	b.arc.Add(string(c.Hash()), cacheHave(have))
 }
 
 func (b *arccache) cacheSize(c cid.Cid, blockSize int) {
-	b.arc.Add(c.KeyString(), cacheSize(blockSize))
+	b.arc.Add(string(c.Hash()), cacheSize(blockSize))
 }
 
 func (b *arccache) AllKeysChan(ctx context.Context) (<-chan cid.Cid, error) {
diff --git a/blockstore.go b/blockstore.go
index 03004b59243b93cbf0ca57cd9100264dd5799b66..e815642da073896c53132aaccaf91463f98b5661 100644
--- a/blockstore.go
+++ b/blockstore.go
@@ -119,8 +119,7 @@ func (bs *blockstore) Get(k cid.Cid) (blocks.Block, error) {
 		log.Error("undefined cid in blockstore")
 		return nil, ErrNotFound
 	}
-
-	bdata, err := bs.datastore.Get(dshelp.CidToDsKey(k))
+	bdata, err := bs.datastore.Get(dshelp.MultihashToDsKey(k.Hash()))
 	if err == ds.ErrNotFound {
 		return nil, ErrNotFound
 	}
@@ -143,7 +142,7 @@ func (bs *blockstore) Get(k cid.Cid) (blocks.Block, error) {
 }
 
 func (bs *blockstore) Put(block blocks.Block) error {
-	k := dshelp.CidToDsKey(block.Cid())
+	k := dshelp.MultihashToDsKey(block.Cid().Hash())
 
 	// Has is cheaper than Put, so see if we already have it
 	exists, err := bs.datastore.Has(k)
@@ -159,7 +158,7 @@ func (bs *blockstore) PutMany(blocks []blocks.Block) error {
 		return err
 	}
 	for _, b := range blocks {
-		k := dshelp.CidToDsKey(b.Cid())
+		k := dshelp.MultihashToDsKey(b.Cid().Hash())
 		exists, err := bs.datastore.Has(k)
 		if err == nil && exists {
 			continue
@@ -174,11 +173,11 @@ func (bs *blockstore) PutMany(blocks []blocks.Block) error {
 }
 
 func (bs *blockstore) Has(k cid.Cid) (bool, error) {
-	return bs.datastore.Has(dshelp.CidToDsKey(k))
+	return bs.datastore.Has(dshelp.MultihashToDsKey(k.Hash()))
 }
 
 func (bs *blockstore) GetSize(k cid.Cid) (int, error) {
-	size, err := bs.datastore.GetSize(dshelp.CidToDsKey(k))
+	size, err := bs.datastore.GetSize(dshelp.MultihashToDsKey(k.Hash()))
 	if err == ds.ErrNotFound {
 		return -1, ErrNotFound
 	}
@@ -186,7 +185,7 @@ func (bs *blockstore) GetSize(k cid.Cid) (int, error) {
 }
 
 func (bs *blockstore) DeleteBlock(k cid.Cid) error {
-	return bs.datastore.Delete(dshelp.CidToDsKey(k))
+	return bs.datastore.Delete(dshelp.MultihashToDsKey(k.Hash()))
 }
 
 // AllKeysChan runs a query for keys from the blockstore.
@@ -220,12 +219,12 @@ func (bs *blockstore) AllKeysChan(ctx context.Context) (<-chan cid.Cid, error) {
 			}
 
 			// need to convert to key.Key using key.KeyFromDsKey.
-			k, err := dshelp.DsKeyToCid(ds.RawKey(e.Key))
+			bk, err := dshelp.BinaryFromDsKey(ds.RawKey(e.Key))
 			if err != nil {
-				log.Warningf("error parsing key from DsKey: %s", err)
+				log.Warningf("error parsing key from binary: %s", err)
 				continue
 			}
-
+			k := cid.NewCidV1(cid.Raw, bk)
 			select {
 			case <-ctx.Done():
 				return
diff --git a/blockstore_test.go b/blockstore_test.go
index b01574a440da19884406c2db0394d4c6ee853143..a165652f412f313e034c436ad35a0613f8265ea6 100644
--- a/blockstore_test.go
+++ b/blockstore_test.go
@@ -53,6 +53,24 @@ func TestPutThenGetBlock(t *testing.T) {
 	}
 }
 
+func TestCidv0v1(t *testing.T) {
+	bs := NewBlockstore(ds_sync.MutexWrap(ds.NewMapDatastore()))
+	block := blocks.NewBlock([]byte("some data"))
+
+	err := bs.Put(block)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	blockFromBlockstore, err := bs.Get(cid.NewCidV1(cid.DagProtobuf, block.Cid().Hash()))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !bytes.Equal(block.RawData(), blockFromBlockstore.RawData()) {
+		t.Fail()
+	}
+}
+
 func TestPutThenGetSizeBlock(t *testing.T) {
 	bs := NewBlockstore(ds_sync.MutexWrap(ds.NewMapDatastore()))
 	block := blocks.NewBlock([]byte("some data"))
@@ -218,18 +236,19 @@ func TestAllKeysRespectsContext(t *testing.T) {
 }
 
 func expectMatches(t *testing.T, expect, actual []cid.Cid) {
+	t.Helper()
 
 	if len(expect) != len(actual) {
 		t.Errorf("expect and actual differ: %d != %d", len(expect), len(actual))
 	}
+
+	actualSet := make(map[string]bool, len(actual))
+	for _, k := range actual {
+		actualSet[string(k.Hash())] = true
+	}
+
 	for _, ek := range expect {
-		found := false
-		for _, ak := range actual {
-			if ek.Equals(ak) {
-				found = true
-			}
-		}
-		if !found {
+		if !actualSet[string(ek.Hash())] {
 			t.Error("expected key not found: ", ek)
 		}
 	}
@@ -269,6 +288,10 @@ func (c *queryTestDS) Query(q dsq.Query) (dsq.Results, error) {
 	return c.ds.Query(q)
 }
 
+func (c *queryTestDS) Sync(key ds.Key) error {
+	return c.ds.Sync(key)
+}
+
 func (c *queryTestDS) Batch() (ds.Batch, error) {
 	return ds.NewBasicBatch(c), nil
 }
diff --git a/bloom_cache.go b/bloom_cache.go
index 6e28ecec6a9d030b3a43478d5d621675e32a242d..b4fadc2ef0af1c97d9613cd94f98d1d984b28c66 100644
--- a/bloom_cache.go
+++ b/bloom_cache.go
@@ -103,7 +103,7 @@ func (b *bloomcache) build(ctx context.Context) error {
 				atomic.StoreInt32(&b.active, 1)
 				return nil
 			}
-			b.bloom.AddTS(key.Bytes()) // Use binary key, the more compact the better
+			b.bloom.AddTS(key.Hash()) // Use binary key, the more compact the better
 		case <-ctx.Done():
 			b.buildErr = ctx.Err()
 			return b.buildErr
@@ -130,7 +130,7 @@ func (b *bloomcache) hasCached(k cid.Cid) (has bool, ok bool) {
 		return false, false
 	}
 	if b.BloomActive() {
-		blr := b.bloom.HasTS(k.Bytes())
+		blr := b.bloom.HasTS(k.Hash())
 		if !blr { // not contained in bloom is only conclusive answer bloom gives
 			b.hits.Inc()
 			return false, true
@@ -163,7 +163,7 @@ func (b *bloomcache) Put(bl blocks.Block) error {
 	// See comment in PutMany
 	err := b.blockstore.Put(bl)
 	if err == nil {
-		b.bloom.AddTS(bl.Cid().Bytes())
+		b.bloom.AddTS(bl.Cid().Hash())
 	}
 	return err
 }
@@ -178,7 +178,7 @@ func (b *bloomcache) PutMany(bs []blocks.Block) error {
 		return err
 	}
 	for _, bl := range bs {
-		b.bloom.AddTS(bl.Cid().Bytes())
+		b.bloom.AddTS(bl.Cid().Hash())
 	}
 	return nil
 }
diff --git a/bloom_cache_test.go b/bloom_cache_test.go
index fd65c0b2868df378cc934463e14eae5e83cc23fd..3b290a0c2c737ed99e68eb98b6657dac8f6d38a0 100644
--- a/bloom_cache_test.go
+++ b/bloom_cache_test.go
@@ -202,6 +202,11 @@ func (c *callbackDatastore) Query(q dsq.Query) (dsq.Results, error) {
 	return c.ds.Query(q)
 }
 
+func (c *callbackDatastore) Sync(key ds.Key) error {
+	c.CallF()
+	return c.ds.Sync(key)
+}
+
 func (c *callbackDatastore) Batch() (ds.Batch, error) {
 	return ds.NewBasicBatch(c), nil
 }
diff --git a/go.mod b/go.mod
index 3d4b324e6a4a0c79987e7b84969e5d2340e12a33..0749b04fe956c0543adf679a0d6921265ce0b518 100644
--- a/go.mod
+++ b/go.mod
@@ -5,12 +5,12 @@ require (
 	github.com/ipfs/bbloom v0.0.4
 	github.com/ipfs/go-block-format v0.0.2
 	github.com/ipfs/go-cid v0.0.4
-	github.com/ipfs/go-datastore v0.1.1
-	github.com/ipfs/go-ipfs-ds-help v0.0.1
+	github.com/ipfs/go-datastore v0.3.1
+	github.com/ipfs/go-ipfs-ds-help v0.1.0
 	github.com/ipfs/go-ipfs-util v0.0.1
 	github.com/ipfs/go-log v0.0.1
 	github.com/ipfs/go-metrics-interface v0.0.1
 	github.com/multiformats/go-multihash v0.0.10
 )
 
-go 1.12
+go 1.13
diff --git a/go.sum b/go.sum
index 24781c217811a42f12897f40877e340402a9e89f..f1cbeaf5770a5d8a3ee7fdc79811f8f7744bfeab 100644
--- a/go.sum
+++ b/go.sum
@@ -10,8 +10,6 @@ github.com/gxed/hashland/keccakpg v0.0.1 h1:wrk3uMNaMxbXiHibbPO4S0ymqJMm41WiudyF
 github.com/gxed/hashland/keccakpg v0.0.1/go.mod h1:kRzw3HkwxFU1mpmPP8v1WyQzwdGfmKFJ6tItnhQ67kU=
 github.com/gxed/hashland/murmur3 v0.0.1 h1:SheiaIt0sda5K+8FLz952/1iWS9zrnKsEJaOJu4ZbSc=
 github.com/gxed/hashland/murmur3 v0.0.1/go.mod h1:KjXop02n4/ckmZSnY2+HKcLud/tcmvhST0bie/0lS48=
-github.com/hashicorp/golang-lru v0.5.3 h1:YPkqC67at8FYaadspW/6uE0COsBxS2656RLEr8Bppgk=
-github.com/hashicorp/golang-lru v0.5.3/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/ipfs/bbloom v0.0.4 h1:Gi+8EGJ2y5qiD5FbsbpX/TMNcJw8gSqr7eyjHa4Fhvs=
@@ -20,19 +18,15 @@ github.com/ipfs/go-block-format v0.0.2 h1:qPDvcP19izTjU8rgo6p7gTXZlkMkF5bz5G3fqI
 github.com/ipfs/go-block-format v0.0.2/go.mod h1:AWR46JfpcObNfg3ok2JHDUfdiHRgWhJgCQF+KIgOPJY=
 github.com/ipfs/go-cid v0.0.1 h1:GBjWPktLnNyX0JiQCNFpUuUSoMw5KMyqrsejHYlILBE=
 github.com/ipfs/go-cid v0.0.1/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
-github.com/ipfs/go-cid v0.0.3 h1:UIAh32wymBpStoe83YCzwVQQ5Oy/H0FdxvUS6DJDzms=
-github.com/ipfs/go-cid v0.0.3/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
 github.com/ipfs/go-cid v0.0.4 h1:UlfXKrZx1DjZoBhQHmNHLC1fK1dUJDN20Y28A7s+gJ8=
 github.com/ipfs/go-cid v0.0.4/go.mod h1:4LLaPOQwmk5z9LBgQnpkivrx8BJjUyGwTXCd5Xfj6+M=
-github.com/ipfs/go-datastore v0.0.1 h1:AW/KZCScnBWlSb5JbnEnLKFWXL224LBEh/9KXXOrUms=
-github.com/ipfs/go-datastore v0.0.1/go.mod h1:d4KVXhMt913cLBEI/PXAy6ko+W7e9AhyAKBGh803qeE=
-github.com/ipfs/go-datastore v0.1.0 h1:TOxI04l8CmO4zGtesENhzm4PwkFwJXY3rKiYaaMf9fI=
-github.com/ipfs/go-datastore v0.1.0/go.mod h1:d4KVXhMt913cLBEI/PXAy6ko+W7e9AhyAKBGh803qeE=
 github.com/ipfs/go-datastore v0.1.1 h1:F4k0TkTAZGLFzBOrVKDAvch6JZtuN4NHkfdcEZL50aI=
 github.com/ipfs/go-datastore v0.1.1/go.mod h1:w38XXW9kVFNp57Zj5knbKWM2T+KOZCGDRVNdgPHtbHw=
+github.com/ipfs/go-datastore v0.3.1 h1:SS1t869a6cctoSYmZXUk8eL6AzVXgASmKIWFNQkQ1jU=
+github.com/ipfs/go-datastore v0.3.1/go.mod h1:w38XXW9kVFNp57Zj5knbKWM2T+KOZCGDRVNdgPHtbHw=
 github.com/ipfs/go-ipfs-delay v0.0.0-20181109222059-70721b86a9a8/go.mod h1:8SP1YXK1M1kXuc4KJZINY3TQQ03J2rwBG9QfXmbRPrw=
-github.com/ipfs/go-ipfs-ds-help v0.0.1 h1:QBg+Ts2zgeemK/dB0saiF/ykzRGgfoFMT90Rzo0OnVU=
-github.com/ipfs/go-ipfs-ds-help v0.0.1/go.mod h1:gtP9xRaZXqIQRh1HRpp595KbBEdgqWFxefeVKOV8sxo=
+github.com/ipfs/go-ipfs-ds-help v0.1.0 h1:/MfUnPgrtRCJvLdOiAgaODJD/BtV1CpfqQ53eqhWXqM=
+github.com/ipfs/go-ipfs-ds-help v0.1.0/go.mod h1:zjN0aB3d6VyzJTSvcylSYxo+LSR/ELEfNnQM8p/vwc8=
 github.com/ipfs/go-ipfs-util v0.0.1 h1:Wz9bL2wB2YBJqggkA4dD7oSmqB4cAnpNbGrlHJulv50=
 github.com/ipfs/go-ipfs-util v0.0.1/go.mod h1:spsl5z8KUnrve+73pOhSVZND1SIxPW5RyBCNzQxlJBc=
 github.com/ipfs/go-log v0.0.1 h1:9XTUN/rW64BCG1YhPK9Hoy3q8nr4gOmHHBpgFdfw6Lc=
@@ -68,10 +62,6 @@ github.com/multiformats/go-multibase v0.0.1 h1:PN9/v21eLywrFWdFNsFKaU04kLJzuYzmr
 github.com/multiformats/go-multibase v0.0.1/go.mod h1:bja2MqRZ3ggyXtZSEDKpl0uO/gviWFaSteVbWT51qgs=
 github.com/multiformats/go-multihash v0.0.1 h1:HHwN1K12I+XllBCrqKnhX949Orn4oawPkegHMu2vDqQ=
 github.com/multiformats/go-multihash v0.0.1/go.mod h1:w/5tugSrLEbWqlcgJabL3oHFKTwfvkofsjW2Qa1ct4U=
-github.com/multiformats/go-multihash v0.0.8 h1:wrYcW5yxSi3dU07n5jnuS5PrNwyHy0zRHGVoUugWvXg=
-github.com/multiformats/go-multihash v0.0.8/go.mod h1:YSLudS+Pi8NHE7o6tb3D8vrpKa63epEDmG8nTduyAew=
-github.com/multiformats/go-multihash v0.0.9 h1:aoijQXYYl7Xtb2pUUP68R+ys1TlnlR3eX6wmozr0Hp4=
-github.com/multiformats/go-multihash v0.0.9/go.mod h1:YSLudS+Pi8NHE7o6tb3D8vrpKa63epEDmG8nTduyAew=
 github.com/multiformats/go-multihash v0.0.10 h1:lMoNbh2Ssd9PUF74Nz008KGzGPlfeV6wH3rit5IIGCM=
 github.com/multiformats/go-multihash v0.0.10/go.mod h1:YSLudS+Pi8NHE7o6tb3D8vrpKa63epEDmG8nTduyAew=
 github.com/opentracing/opentracing-go v1.0.2 h1:3jA2P6O1F9UOrWVpwrIo17pu01KWvNWg4X946/Y5Zwg=