diff --git a/arc_cache.go b/arc_cache.go
index 8e88fa8..e2b930d 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_test.go b/blockstore_test.go
index b01574a..1bc86ea 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)
 		}
 	}
diff --git a/bloom_cache.go b/bloom_cache.go
index 6e28ece..b4fadc2 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/go.mod b/go.mod
index d51377e..1896650 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	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-ipfs-ds-help v0.0.2-0.20200107180048-11890cc86e62
 	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
diff --git a/go.sum b/go.sum
index 23952fb..99295b5 100644
--- a/go.sum
+++ b/go.sum
@@ -18,19 +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 h1:UlfXKrZx1DjZoBhQHmNHLC1fK1dUJDN20Y28A7s+gJ8=
+github.com/ipfs/go-cid v0.0.4/go.mod h1:4LLaPOQwmk5z9LBgQnpkivrx8BJjUyGwTXCd5Xfj6+M=
 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-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 v0.0.2-0.20200107180048-11890cc86e62 h1:ib57ZzQCRZ/scmBO32DqWThjwpTqBW/fGqurYDE/rFA=
+github.com/ipfs/go-ipfs-ds-help v0.0.2-0.20200107180048-11890cc86e62/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=
@@ -66,10 +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=