The term corroborating evidence is identified in base64 scheme by the sequence Y29ycm9ib3JhdGluZyBldmlkZW5jZQ==, while the MD5 signature is equal to 73c8c39e3a49e9c15f4c09bbe5e770bb. The ASCII encoding of corroborating evidence in hexadecimal notation is 636f72726f626f726174696e672065766964656e6365.