Ok this is cool
nostr:npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8n is this satogram a legit puzzle from you?

Discussion
Agreed it’s a fun way to do a giveaway. I tried a few obvious bitcoin and Blockstream related phrases/terms with no luck. Without any other clues, the input of a SHA-256 hash could literally be anything 🤣