The term rh-negative blood type is identified in base64 scheme by the sequence cmgtbmVnYXRpdmUgYmxvb2QgdHlwZQ==, while the MD5 signature is equal to a16b8904a1e3035de52d240b5fe1db16. The ASCII encoding of rh-negative blood type in hexadecimal notation is 72682d6e6567617469766520626c6f6f642074797065.