diff --git a/identitychain/identityblock.go b/identitychain/identityblock.go
deleted file mode 100644
index 46bd295d5..000000000
--- a/identitychain/identityblock.go
+++ /dev/null
@@ -1,74 +0,0 @@
-package identitychain
-
-import (
-	"bytes"
-	"crypto/sha256"
-	"encoding/gob"
-	"log"
-	"time"
-
-	"github.com/simple-rules/harmony-benchmark/node"
-	"github.com/simple-rules/harmony-benchmark/utils"
-)
-
-// IdentityBlock has the information of one node
-type IdentityBlock struct {
-	Timestamp     int64
-	PrevBlockHash [32]byte
-	NumIdentities int32
-	Identities    []*node.Node
-}
-
-// Serialize serializes the block
-func (b *IdentityBlock) Serialize() []byte {
-	var result bytes.Buffer
-	encoder := gob.NewEncoder(&result)
-	err := encoder.Encode(b)
-	if err != nil {
-		log.Panic(err)
-	}
-	return result.Bytes()
-}
-
-// GetIdentities returns a list of identities.
-func (b *IdentityBlock) GetIdentities() []*node.Node {
-	return b.Identities
-}
-
-// DeserializeBlock deserializes a block
-func DeserializeBlock(d []byte) *IdentityBlock {
-	var block IdentityBlock
-	decoder := gob.NewDecoder(bytes.NewReader(d))
-	err := decoder.Decode(&block)
-	if err != nil {
-		log.Panic(err)
-	}
-	return &block
-}
-
-// NewBlock creates and returns a new block.
-func NewBlock(Identities []*node.Node, prevBlockHash [32]byte) *IdentityBlock {
-	block := &IdentityBlock{Timestamp: time.Now().Unix(), PrevBlockHash: prevBlockHash, NumIdentities: int32(len(Identities)), Identities: Identities}
-	return block
-}
-
-// CalculateBlockHash returns a hash of the block
-func (b *IdentityBlock) CalculateBlockHash() [32]byte {
-	var hashes [][]byte
-	var blockHash [32]byte
-	hashes = append(hashes, utils.ConvertFixedDataIntoByteArray(b.Timestamp))
-	hashes = append(hashes, b.PrevBlockHash[:])
-	for _, id := range b.Identities {
-		hashes = append(hashes, utils.ConvertFixedDataIntoByteArray(id))
-	}
-	hashes = append(hashes, utils.ConvertFixedDataIntoByteArray(b.NumIdentities))
-	blockHash = sha256.Sum256(bytes.Join(hashes, []byte{}))
-	return blockHash
-}
-
-// NewGenesisBlock creates and returns genesis Block.
-func NewGenesisBlock() *IdentityBlock {
-	var Ids []*node.Node
-	block := &IdentityBlock{Timestamp: time.Now().Unix(), PrevBlockHash: [32]byte{}, NumIdentities: 1, Identities: Ids}
-	return block
-}