The term just-noticeable difference is identified in base64 scheme by the sequence anVzdC1ub3RpY2VhYmxlIGRpZmZlcmVuY2U=, while the MD5 signature is equal to 827218affb03ec615f1f23d3e29820d9. The ASCII encoding of just-noticeable difference in hexadecimal notation is 6a7573742d6e6f7469636561626c6520646966666572656e6365.