The term self-annihilation is identified in base64 scheme by the sequence c2VsZi1hbm5paGlsYXRpb24=, while the MD5 signature is equal to f4fd23f57825d370a33857f4d24a33b3. The ASCII encoding of self-annihilation in hexadecimal notation is 73656c662d616e6e6968696c6174696f6e.