/**
  * @param input
  * @param serializationTag see {@link SerializationTags}
  * @return
  */
 public static byte[] DecodeCheckAndTag(string input, int serializationTag)
 {
     byte[] tag     = new BigInteger(serializationTag).ToByteArray();
     byte[] decoded = DecodeCheckWithIdentifier(input);
     return(tag.Concatenate(decoded));
 }