Time · GPS · On-chain proof

Photos you can prove.

OPCam burns time, GPS coordinates and address into every photo, fingerprints it with SHA-256, and anchors that fingerprint on-chain — so anyone can independently verify when and where it was taken.

See how it works Verify a photo

24 LANGUAGES · ON-DEVICE · NO ACCOUNT

Built for evidence

Field inspections, incident reports, deliveries, insurance — any photo that has to be trusted.

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Time & place, burned in

Date, time, GPS coordinates and reverse-geocoded address are written into the original pixels — they can't be edited out.

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SHA-256 fingerprint

Every photo gets a cryptographic fingerprint — the same value shown in the watermark and the receipt.

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Optional on-chain anchor

The fingerprint is recorded on Optimism. Anyone can confirm the photo existed at that time — no trust in us required.

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Record library

Browse your captures by timeline, place, or a live map. Each entry keeps its proof.

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Private by design

Photos stay in your library. Only an anonymous hash and timestamp ever leave the device — never your image or location.

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24 languages

Full in-app localization with a built-in language switcher, including right-to-left layouts.

How it works

Three steps, fully on your phone.

Capture. OPCam writes the time, GPS and address watermark into the original photo as you shoot.

Fingerprint. A SHA-256 hash of the original is computed and shown on the photo and in the receipt.

Anchor (optional). Turn on on-chain proof and the fingerprint is recorded on Optimism. Verify it anytime, by anyone, on a public explorer or right here.

Verify a fingerprint

Paste a photo's SHA-256 fingerprint to check whether it has been anchored on-chain.

Open the verifier →