Your photos can prove they're real.
Biometric proof woven into every photo at the moment of capture — signos sealed. Not AI. Not a deepfake. A real human, really there.
Nobody can alter it. Anyone can verify it.
Who needs proof?
Prove you were there. Prove a human took the photo. Not generated. Not staged.
Prove when damage occurred. Unaltered originals with chain of custody from the moment of capture.
Timestamped documentation that stands up to scrutiny. Progress reports no one can question.
Prove it's your original work. Immutable timestamp + human proof that you created it first.
Wills, contracts, wet signatures. Immutable proof a document existed in that exact state, verifiable by anyone.
Receipts, accidents, conditions — sealed the moment you capture them. Your word, backed by proof.
Proof in one tap.
Tap the shutter. The app creates a sealed photo that can prove itself — who took it, what it contains, and exactly when. A copy lands in your Camera Roll too, so it's no different than using your normal camera.
Use signos.app like any camera. One tap, same as always.
Content hash, biometric proof, and timestamp are locked together on an immutable public ledger.
Drop the file at verify.signos.app. No account, no download, no app required.
Four layers of proof. One tap.
The exact pixels are sealed at capture. No cropping, no editing, no filters. Change one pixel and verification fails.
Registered on a public ledger within seconds. Permanent. Immutable. Anyone can look it up.
GPS coordinates embedded at capture. Private Zones automatically strip location near your home.
Anonymous data proves a real person held the phone. Not a bot. Not AI. Not a deepfake.
The sealed file is the proof.
Patent-pending technology. No certificates. No companies. No middlemen. Verification instructions and biometric evidence are woven into the file itself.
- Works without the app
- Works without an account
- Works without signos.app
- Verification tools are open source
We don't want your data.
Nothing leaves your device by default. We register a digital fingerprint that's impossible to fake — not your files. We never see your content.
signos.app is a utility, not a platform. You pay us whether people see your photos or not. We will never advertise to you. We don't have your email address. We don't want it.
- Digital fingerprint only. We never see your content.
- Optional sharing at full resolution with full metadata
- No ads. No tracking. No email. No incentive to lie.
Don't take our word for it.
No account. No download. Drop a file and get an answer.
Your file stays on your device. Verification happens in your browser.
Every photo proves it's real.
signos.app Proof Camera is coming to the App Store.
$2.99/month · Every capture registered · Social Links · Free to verify