The term blank endorsement is identified in base64 scheme by the sequence YmxhbmsgZW5kb3JzZW1lbnQ=, while the MD5 signature is equal to a9ed9f460d71dfddb4ca1698fe01f74b. The ASCII encoding of blank endorsement in hexadecimal notation is 626c616e6b20656e646f7273656d656e74.