diff --git a/pkg/core/block_base.go b/pkg/core/block_base.go
index 77ec7d61d..d67970009 100644
--- a/pkg/core/block_base.go
+++ b/pkg/core/block_base.go
@@ -107,8 +107,8 @@ func (b *BlockBase) GetHashableData() []byte {
 // the modification of transaction will influence the hash value of the block.
 func (b *BlockBase) createHash() {
 	bb := b.GetHashableData()
-	b.hash = hash.DoubleSha256(bb)
 	b.verificationHash = hash.Sha256(bb)
+	b.hash = hash.Sha256(b.verificationHash.BytesBE())
 }
 
 // encodeHashableFields will only encode the fields used for hashing.
diff --git a/pkg/core/transaction/transaction.go b/pkg/core/transaction/transaction.go
index 305a577d2..2669c5e8a 100644
--- a/pkg/core/transaction/transaction.go
+++ b/pkg/core/transaction/transaction.go
@@ -178,8 +178,8 @@ func (t *Transaction) createHash() error {
 	}
 
 	b := buf.Bytes()
-	t.hash = hash.DoubleSha256(b)
 	t.verificationHash = hash.Sha256(b)
+	t.hash = hash.Sha256(t.verificationHash.BytesBE())
 
 	return nil
 }