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FactLockCam
Use cases

Use case

Create the record before cleanup begins.

Storm damage, leaks, and loss claims are easier to explain when the original file and signed metadata can be inspected later. FactLockCam seals in-app captures into an encrypted archive you control.

  • Wide then close-up
  • Before and after pairs
  • Title without rewriting bytes

What to document before conditions change

  • Wide shots of the room or exterior, then close-ups of the damaged area
  • Before-and-after pairs when you can capture both states
  • Serial numbers, water lines, or debris that may be cleared

How FactLockCam seals the record

Capture inside the app. FactLockCam records the media fingerprint and file details, then signs a canonical manifest. When a GPS reading is available, Send Proof seals it inside the package you share. That reading is device-reported and is not part of the signed manifest. The encrypted item stays on your device.

Add context without changing the original record

Use Certificate Studio to add a title and description for the recipient. Those fields travel with the package; they do not alter the sealed media or the signed manifest hash.

Send and open without uploading

Share one .flcproof file. The app makes the unlock key, so no one types a password. A small proof opens in the recipient's browser from the link. A proof is large when the photo or video inside is 25 MiB or more. A large proof opens in the free FactLockFile desktop Viewer, coming for Mac, Windows and Linux once each version is tested. Its key comes as a note beside the file. FactLockCam does not host the file.

What the checks establish

Verification shows file integrity, signed-manifest integrity, signing-address recovery, and, when the public record is available, that the signed record existed no later than the Polygon block shown. Capture time and GPS are reported by the device. It verifies the exact file and signed record; the full scope is on the threat model page.

Next step

Document it before it is gone.

Debris gets cleared and water lines dry. The signed record does not change.

with the FactLockCam app.

Tamper-evident archive · signed record · public-record anchor on Polygon.