The term proterozoic eon is identified in base64 scheme by the sequence cHJvdGVyb3pvaWMgZW9u, while the MD5 signature is equal to 1d7d08f530cb51f7a7525c44e6ce2bba. The ASCII encoding of proterozoic eon in hexadecimal notation is 70726f7465726f7a6f696320656f6e.