The Proof ยท live, not a replay
Your browser generates a keypair, seals an artifact, signs it, and hands you the file. No server. No account. Nothing leaves your device.
This is live. The signature is real, made on your machine, checkable by any verifier on the planet.
The file in your downloads folder is real: a sealed, signed artifact whose signature anyone can check, on any machine, without contacting us. The keypair was generated locally. The signing happened locally. The architecture records nothing of yours, by construction, not by promise.
Now break it: verify the proof, change one character, and watch the seal fail.
Proof is a property of the file.