Evidence protocol

ProofQR

Show a live signed QR on one screen. Another phone’s Camera app opens verification and checks whether the token is still valid — time from the server, location from the proving device’s GPS.

  • Start live proof

    This device shows a rotating QR. Tokens refresh every few seconds.

  • Scan with Camera

    Point the other phone’s Camera at the QR — it opens the verify page automatically.

  • Validity check

    Signature, expiry, and claimed GPS are graded. Location is a device claim, not a server attest.

▣ Start live proof ✓ Verify / scan

Tip: use two phones — one for live proof, one to scan. You can also open Verify and tap “Scan with camera”.