The term polyphonic letter is identified in base64 scheme by the sequence cG9seXBob25pYyBsZXR0ZXI=, while the MD5 signature is equal to e1bcb50a337e2f2f44523e9ddde3da64. The ASCII encoding of polyphonic letter in hexadecimal notation is 706f6c7970686f6e6963206c6574746572.