diff --git a/src/main/scala/com/github/fluency03/blockchain/package.scala b/src/main/scala/com/github/fluency03/blockchain/package.scala
index 6f86fcd..5f85872 100644
--- a/src/main/scala/com/github/fluency03/blockchain/package.scala
+++ b/src/main/scala/com/github/fluency03/blockchain/package.scala
@@ -48,7 +48,7 @@ package object blockchain {
     def toBase64: String = base64Of(bytes)
     def toSha256: String = SHA256.hash(bytes)
     def toSha256Digest: Bytes = SHA256.hashToDigest(bytes)
-    def toRipemd160Of: String = RIPEMD160.hash(bytes)
+    def toRipemd160: String = RIPEMD160.hash(bytes)
     def toRipemd160ODigest: Bytes = RIPEMD160.hashToDigest(bytes)
     def toHash160: String = RIPEMD160.doubleHash(bytes)
     def toHash160Digest: Bytes = RIPEMD160.doubleHashToDigest(bytes)
diff --git a/src/test/scala/com/github/fluency03/blockchain/UtilTest.scala b/src/test/scala/com/github/fluency03/blockchain/BlockchainPackageTest.scala
similarity index 66%
rename from src/test/scala/com/github/fluency03/blockchain/UtilTest.scala
rename to src/test/scala/com/github/fluency03/blockchain/BlockchainPackageTest.scala
index fcca1cb..45bbceb 100644
--- a/src/test/scala/com/github/fluency03/blockchain/UtilTest.scala
+++ b/src/test/scala/com/github/fluency03/blockchain/BlockchainPackageTest.scala
@@ -5,7 +5,7 @@ import java.time.format.DateTimeParseException
 import org.scalamock.scalatest.MockFactory
 import org.scalatest.{FlatSpec, Matchers}
 
-class UtilTest extends FlatSpec with Matchers with MockFactory {
+class BlockchainPackageTest extends FlatSpec with Matchers with MockFactory {
 
   "getCurrentTimestamp" should "be able to get current Unix epoch time." in {
     val t1 = getCurrentTimestamp
@@ -54,13 +54,34 @@ class UtilTest extends FlatSpec with Matchers with MockFactory {
     "open sesame".toSha256 shouldEqual "41ef4bb0b23661e66301aac36066912dac037827b4ae63a7b1165a5aa93ed4eb"
     "".toSha256 shouldEqual "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
     "a".hex2Binary shouldEqual "1010"
+    "a".hex2BigInt shouldEqual BigInt(10)
     "ab".hex2Binary shouldEqual "10101011"
+    "ab".hex2BigInt shouldEqual BigInt(171)
+    "bitcoin".toRipemd160 shouldEqual "5891bf40b0b0e8e19f524bdc2e842d012264624b"
+    "blockchain".toRipemd160 shouldEqual "5c403af45cae136a79eea3c7e9f79c3dd049776b"
   }
 
   "BytesImplicit" should "convert Array of Byte to corresponding type." in {
     val bytes: Bytes = Array(192.toByte, 168.toByte, 1, 9)
     bytes.toHex shouldEqual "c0a80109"
     bytes.toBase64 shouldEqual "wKgBCQ=="
+    "open sesame".getBytes.toSha256 shouldEqual "41ef4bb0b23661e66301aac36066912dac037827b4ae63a7b1165a5aa93ed4eb"
+    "open sesame".getBytes.toSha256Digest shouldEqual ("41ef4bb0b23661e66301aac36066912da" +
+      "c037827b4ae63a7b1165a5aa93ed4eb").hex2Bytes
+
+    "173BDED8F2A2069C193E63EA30DC8FD20E815EC3642B9C24AD7002C03D1BFB9B".hex2Bytes.toRipemd160 shouldEqual
+      "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".toLowerCase
+
+    "173BDED8F2A2069C193E63EA30DC8FD20E815EC3642B9C24AD7002C03D1BFB9B".hex2Bytes.toRipemd160ODigest shouldEqual
+      "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".hex2Bytes
+
+    ("04b4d653fcbb4b96000c99343f23b08a44fa306031e0587f9e657ab4a25411" +
+      "29368d7d9bb05cd8afbdf7705a6540d98028236965553f91bf1c5b4f70073f55b55d").hex2Bytes.toHash160Digest shouldEqual
+      "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".hex2Bytes
+
+    ("04b4d653fcbb4b96000c99343f23b08a44fa306031e0587f9e657ab4a25411" +
+      "29368d7d9bb05cd8afbdf7705a6540d98028236965553f91bf1c5b4f70073f55b55d").hex2Bytes.toHash160 shouldEqual
+      "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".toLowerCase
   }
 
   "genesisTimestamp" should "be the Epoch time of 2018-04-11T18:52:01Z ." in {
diff --git a/src/test/scala/com/github/fluency03/blockchain/RIPEMD160Test.scala b/src/test/scala/com/github/fluency03/blockchain/RIPEMD160Test.scala
index c23a71e..f99b72e 100644
--- a/src/test/scala/com/github/fluency03/blockchain/RIPEMD160Test.scala
+++ b/src/test/scala/com/github/fluency03/blockchain/RIPEMD160Test.scala
@@ -13,6 +13,10 @@ class RIPEMD160Test extends FlatSpec with Matchers {
       "29368d7d9bb05cd8afbdf7705a6540d98028236965553f91bf1c5b4f70073f55b55d").hex2Bytes) shouldEqual
       "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".hex2Bytes
 
+    RIPEMD160.doubleHash(("04b4d653fcbb4b96000c99343f23b08a44fa306031e0587f9e657ab4a25411" +
+      "29368d7d9bb05cd8afbdf7705a6540d98028236965553f91bf1c5b4f70073f55b55d").hex2Bytes) shouldEqual
+      "88C2D2FA846282C870A76CADECBE45C4ACD72BB6".toLowerCase
+
     RIPEMD160.hash("61956bf4e271df1cd88a9a7828a59c88eb7ea13c176c4d03355ac27129760673") shouldEqual
       "352b0b6bd7284755d5c685fb7793c9f4d672c5ff"
     RIPEMD160.hash("abcd") shouldEqual "2e7e536fd487deaa943fda5522d917bdb9011b7a"
@@ -20,8 +24,6 @@ class RIPEMD160Test extends FlatSpec with Matchers {
     RIPEMD160.hash("bitcoin") shouldEqual "5891bf40b0b0e8e19f524bdc2e842d012264624b"
     RIPEMD160.hash("blockchain") shouldEqual "5c403af45cae136a79eea3c7e9f79c3dd049776b"
 
-
-
   }
 
 }