The term copperplate engraving is identified in base64 scheme by the sequence Y29wcGVycGxhdGUgZW5ncmF2aW5n, while the MD5 signature is equal to 23261cad99aec6d2eadfab337c0f33f6. The ASCII encoding of copperplate engraving in hexadecimal notation is 636f70706572706c61746520656e67726176696e67.