The term rh-positive blood type is identified in base64 scheme by the sequence cmgtcG9zaXRpdmUgYmxvb2QgdHlwZQ==, while the MD5 signature is equal to 8c0304a9ac1026b7a0c6dadc855b3da9. The ASCII encoding of rh-positive blood type in hexadecimal notation is 72682d706f73697469766520626c6f6f642074797065.