The term osip emilevich mandelstam is identified in base64 scheme by the sequence b3NpcCBlbWlsZXZpY2ggbWFuZGVsc3RhbQ==, while the MD5 signature is equal to 5a55d564b4f47b45dab92dabc8d64994. The ASCII encoding of osip emilevich mandelstam in hexadecimal notation is 6f73697020656d696c6576696368206d616e64656c7374616d.