core: Add Block.IsGenesis() and set Block.ParentHash to 0 in genesis block. (#37)

1 files changed, 5 insertions, 0 deletions

diff --git a/core/types/block.go b/core/types/block.go
index 55e82da..e35ab8d 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -111,6 +111,11 @@ func (b *Block) Clone() *Block {
 	return bcopy
 }
 
+// IsGenesis checks if the block is a genesisBlock
+func (b *Block) IsGenesis() bool {
+	return b.Height == 0 && b.ParentHash == common.Hash{}
+}
+
 // ByHash is the helper type for sorting slice of blocks by hash.
 type ByHash []*Block