diff --git a/block/block.go b/block/block.go
deleted file mode 100644
index da3e73d2b..000000000
--- a/block/block.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package block
-
-import (
-  "github.com/jbenet/go-multihash"
-)
-
-type Block struct {
-  Multihash []byte
-  Data []byte
-}
diff --git a/blocks/blocks.go b/blocks/blocks.go
index 284e555ff..8d5f64e05 100644
--- a/blocks/blocks.go
+++ b/blocks/blocks.go
@@ -39,9 +39,10 @@ func NewBlockService(d ds.Datastore) (*BlockService, error) {
 	return &BlockService{Datastore: d}, nil
 }
 
-func (s *BlockService) AddBlock(b *Block) error {
-	dsk := ds.NewKey(string(b.Key()))
-	return s.Datastore.Put(dsk, b.Data)
+func (s *BlockService) AddBlock(b *Block) (u.Key, error) {
+	k := b.Key()
+	dsk := ds.NewKey(string(k))
+	return k, s.Datastore.Put(dsk, b.Data)
 }
 
 func (s *BlockService) GetBlock(k u.Key) (*Block, error) {
diff --git a/blocks/blocks_test.go b/blocks/blocks_test.go
index 6ee6c3d36..ec3738330 100644
--- a/blocks/blocks_test.go
+++ b/blocks/blocks_test.go
@@ -37,12 +37,16 @@ func TestBlocks(t *testing.T) {
 		t.Error("Block key and data multihash key not equal")
 	}
 
-	err = bs.AddBlock(b)
+	k, err := bs.AddBlock(b)
 	if err != nil {
 		t.Error("failed to add block to BlockService", err)
 		return
 	}
 
+	if k != b.Key() {
+		t.Error("returned key is not equal to block key", err)
+	}
+
 	b2, err := bs.GetBlock(b.Key())
 	if err != nil {
 		t.Error("failed to retrieve block from BlockService", err)