Don't take our word for it.
Drop a file. Get proof. No account, no download, no upload. Everything happens in your browser.
Drop your [S] file here to verify
or click to browse
Four checks. Zero trust required.
Every sealed file is verified across four independent dimensions. All checks happen in your browser — your file never touches a server.
What — is the file untouched? BLAKE3 generates a unique fingerprint of every byte. Change one pixel and verification fails.
When — was it created? The hash is registered on an immutable public ledger. The timestamp can't be forged or backdated.
Who — was a real person there? Biometric motion data captured at the moment of creation proves a human held the camera.
Who sealed it? The registration wallet is verified against the Signos registry to confirm it was created and managed exclusively by Signos.
How verification works
Three checks happen entirely in your browser. Your file never touches a server.
- Hash the file — BLAKE3 generates a unique fingerprint of the exact bytes
- Extract metadata — Read the embedded verification instructions from the file
- Search public ledger — Look up the hash on an immutable public ledger
- Verify human presence — Cross-check biometric proof with the on-chain record
Take photos that prove themselves.
signos.app Proof Camera seals every photo at capture. Biometric proof, tamper-proof timestamp, self-certifying file. One tap.
$2.99/month · 25 free registrations · Free to verify