The term potential difference is identified in base64 scheme by the sequence cG90ZW50aWFsIGRpZmZlcmVuY2U=, while the MD5 signature is equal to 637905ae85ba79b07a68caca949350d8. The ASCII encoding of potential difference in hexadecimal notation is 706f74656e7469616c20646966666572656e6365.