Hidden message
The mysteries of nfts are only increased by even more mysterious messages.

Transcript
Paul and Max are having a beer.
Max: As an extra feature, there is a secret hidden message hyper-cryptographically encoded in all my nfts.
Stored for aeons to come in the block chain, hidden in plain sight. Secrets... mystery... conspiracy!
Paul, while Max takes a selfie with his beer: "If you can read this, you wasted your money?"
Max: "Send more beer money." Err, I mean, I can't tell, it's secret!
Paul: Good luck.