Paste a JSON object containing content, hash, and signature and confirm whether it is valid and signed by me. (Example JSON here for this page.)
The ed25519 public key I use for signing content on this website is 0x84f7a2874d37cca848d0feb7731411b0f26e5592a8337b7c99da38504107d647. I added that key to my Farcaster account in this transaction.