The term coordinate system is identified in base64 scheme by the sequence Y29vcmRpbmF0ZSBzeXN0ZW0=, while the MD5 signature is equal to 258b9bf3716f5566a2215a0a7e0cfd55. The ASCII encoding of coordinate system in hexadecimal notation is 636f6f7264696e6174652073797374656d.