Provenshot

Proof you can verify. A photo's pixels, time, location and device, cryptographically sealed on the capturing phone.

1. 1Open the sealed photo's original file (not a chat-app copy — those re-compress it and break the seal).
2. 2Drag it into the verify page. It checks in your browser — nothing is uploaded.
3. 3It recomputes the pixel hash and checks the hardware signature. One changed pixel or field → fails.

Scanned a QR on a photo? It brought you here — now drop that photo's original file into /verify. Verification runs fully offline in the browser; the image never leaves your device.

Open-source verifier & format spec · Privacy policy · Support