It's an NFT in their collectibles
Wallets show NFTs without asking. Your message is literally the image, and the collection is named Knock: you have a message. Rabby, Robinhood Wallet, Zerion, Rainbow, Blockscout all render it.
Devs launch a token and vanish behind an X account. Knock drops your message inside their wallet: an NFT with your words drawn on it, plus an ETH tip, in one transaction. They answer from the same wallet, so the reply is provably theirs.
Or the dev's wallet. Knock finds the creator wallet on Pons automatically, V1 or V2.
Up to 280 characters. It becomes the image of an NFT, rendered entirely on-chain.
The NFT and your ETH tip land in the dev's wallet within seconds. No account, nothing to install.
Wallets show NFTs without asking. Your message is literally the image, and the collection is named Knock: you have a message. Rabby, Robinhood Wallet, Zerion, Rainbow, Blockscout all render it.
Everything except a 10% protocol fee goes to the dev as ETH, in the same transaction. Every wallet shows incoming funds. Two channels, zero dependency on us.
Only the wallet that created the token can reply. No blue check to buy, no impersonation: a reply is a signature on-chain, shown as Verified dev reply on the public wall.