jm B«<Ä¿=|¸¤¬© o¿þ [¹R#Î:>TËLªWell, maybe like the platform does it you're currently writing on? You can just query the blockchain for a certain byte pattern prefix you define to identify the content.
https://whatsonchain.com/tx/dd72e2e1322a2e39226db5ecc26b0a99183aed16d57f81117445a978a22d5746