diff --git a/src/main/java/com/sparrowwallet/drongo/crypto/DeterministicKey.java b/src/main/java/com/sparrowwallet/drongo/crypto/DeterministicKey.java
index 9d4d588..68eb9a9 100644
--- a/src/main/java/com/sparrowwallet/drongo/crypto/DeterministicKey.java
+++ b/src/main/java/com/sparrowwallet/drongo/crypto/DeterministicKey.java
@@ -175,7 +175,7 @@ public class DeterministicKey extends ECKey {
         int inputLength = input.length;
         byte[] checksummed = new byte[inputLength + 4];
         System.arraycopy(input, 0, checksummed, 0, inputLength);
-        byte[] checksum = Sha256Hash.hashTwice(input);
+        byte[] checksum = Groestl.digest(input);
         System.arraycopy(checksum, 0, checksummed, inputLength, 4);
         return checksummed;
     }
diff --git a/src/main/java/com/sparrowwallet/drongo/protocol/Base58.java b/src/main/java/com/sparrowwallet/drongo/protocol/Base58.java
index c000de0..0f0046d 100644
--- a/src/main/java/com/sparrowwallet/drongo/protocol/Base58.java
+++ b/src/main/java/com/sparrowwallet/drongo/protocol/Base58.java
@@ -122,7 +122,7 @@ public class Base58 {
         byte[] addressBytes = new byte[1 + payload.length + 4];
         addressBytes[0] = (byte) version;
         System.arraycopy(payload, 0, addressBytes, 1, payload.length);
-        byte[] checksum = Sha256Hash.hashTwice(addressBytes, 0, payload.length + 1);
+        byte[] checksum = Groestl.digest(addressBytes, 0, payload.length + 1);
         System.arraycopy(checksum, 0, addressBytes, payload.length + 1, 4);
         return Base58.encode(addressBytes);
     }