The term proportional sample is identified in base64 scheme by the sequence cHJvcG9ydGlvbmFsIHNhbXBsZQ==, while the MD5 signature is equal to 3fc8739c829b73eb6c3edd44a6a6c0ce. The ASCII encoding of proportional sample in hexadecimal notation is 70726f706f7274696f6e616c2073616d706c65.