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.
24 LANGUAGES · ON-DEVICE · NO ACCOUNT
Built for evidence
Field inspections, incident reports, deliveries, insurance — any photo that has to be trusted.
Time & place, burned in
Date, time, GPS coordinates and reverse-geocoded address are written into the original pixels — they can't be edited out.
SHA-256 fingerprint
Every photo gets a cryptographic fingerprint — the same value shown in the watermark and the receipt.
Optional on-chain anchor
The fingerprint is recorded on Optimism. Anyone can confirm the photo existed at that time — no trust in us required.
Share a proof package
Export a watermarked photo with a JSON sidecar from the receipt. Recipients can verify the fingerprint at opcam.ms.co.th/verify without the app.
Record library
Browse your captures by timeline, place, or a live map. Each entry keeps its proof. Back up the whole log as a ZIP archive from Settings.
Private by design
Photos stay in your library. Only an anonymous hash and timestamp ever leave the device — never your image or location.
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.
Verify a fingerprint
Drop a proof package on the verifier, paste a fingerprint, or hash a photo locally — then check whether it has been anchored on-chain.