The term perceptual constancy is identified in base64 scheme by the sequence cGVyY2VwdHVhbCBjb25zdGFuY3k=, while the MD5 signature is equal to 5ae0071e6bdd3510c857c86410ce98c9. The ASCII encoding of perceptual constancy in hexadecimal notation is 7065726365707475616c20636f6e7374616e6379.