How do I prove a human wrote something, not an AI?
Type it on Human Keys at sebbi.pro/keys. The page measures how you type — the rhythm, corrections and pauses — never what you type, seals the result with a fingerprint of the text, and gives you a code anyone can check. The proof is signed by a key on your own phone and dated by Bitcoin, so the original can always show it came first.
How it works
- Type on sebbi.pro/keys. The text stays on your device; only its fingerprint is sent.
- The typing rhythm is scored on the server against a challenge that cannot be prepared in advance.
- You get a code like HK-7Q2M-X9KD and a check page others can open and paste the text into.
- The proof joins the next Bitcoin batch, and you can prove ownership with your phone's key.
50p a month for unlimited proofs. Checking a proof is always free.