The term william butterfield is identified in base64 scheme by the sequence d2lsbGlhbSBidXR0ZXJmaWVsZA==, while the MD5 signature is equal to fcebf9a30218bc3d2258ce0fc244fb05. The ASCII encoding of william butterfield in hexadecimal notation is 77696c6c69616d206275747465726669656c64.