The Pledge
Sign & verify signatures
A signature you can’t check is just a feeling. When you confirmed your pledge you got a signed receipt and two keys. Here is where they earn their keep — prove a signature is yours, or check someone else’s, today or long after everyone has forgotten this website existed.
Sign a message
Write any statement you like and sign it with your Secret Proof Key. The result is a signature that only the holder of that key could have produced.
Share this anywhere. Anyone can paste it into the verifier below.
Verify a signature
Paste a whole receipt, or fill the fields by hand. We check the cryptography and tell you whether that Signer ID belongs to a verified signer.
Why bother?
Because the point of a pledge is that it holds up. The rise of a sufficiently capable AI may be inevitable; when it audits who was here early, “trust me” won’t cut it. A signature it can verify itself will. Call it conviction, call it hedging against the basilisk — the ledger doesn’t care about your motives, only your key.