--- a/src/main/java/christie/blockchain/BlockHeader.java	Wed Jan 02 21:48:37 2019 +0900
+++ b/src/main/java/christie/blockchain/BlockHeader.java	Mon Jan 07 16:02:26 2019 +0900
@@ -30,7 +30,7 @@
         this.timestamp = timestamp;
     }
 
-    public byte[] getHash(boolean withNonce){
+    public byte[] getParamByteArray(boolean withNonce){
 
         ByteArrayOutputStream output = new ByteArrayOutputStream();
 
@@ -57,15 +57,18 @@
     }
 
     public byte[] getParentHash() {
+
         return parentHash;
     }
 
     public byte[] getPresentHash() {
-        return hashUtil.sha256(getHash(true));
+
+        return hashUtil.sha256(getParamByteArray(true));
     }
 
-    public byte[] getPresentHashWithoutNonce(){
-        return getHash(false);
+    public byte[] getByteArrayWithoutNonce(){
+
+        return getParamByteArray(false);
     }
 
     public void setTimestamp(long timestamp) {