Clunky solution for number 1: >Create a 12-word mnemonic phrase for a reproducible Border Wallet. >Pick a 24-word mnemonic phrase from there. >Publish 1kind event with the original 12-word Border Wallet. >If the private key leaks, Rotate to other 24-word mnemonic phrase from the original Border Wallet. >publish how you got the private key/NPUB and the 24-word mnemonic phrase. Timestamp it before the attacker on both the old and new npub. >Third parties can verify that you are the original owner. Just rotate the keys as you wish.