Time capsule notes. Visible notes with hidden content that will only appear at a specified time. You wait in anticipation not knowing what the note will contain.
Use case: who knows 🤷♂️
Discussion
Sounds like something the Shipyard scheduling DVM b nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft does, but you would use the kind 7000 reaction as placeholder node
If you don't resign every x days then the message reveals.
Use case:
• final message to the world
• proof of change of keys
Made me think of warrant canary.