Prove it's real. Prove it's yours.
Signos seals photos and videos with a cryptographic fingerprint and registers them on the Algorand blockchain at the moment of creation. Files become self-certifying — anyone can verify their authenticity without contacting Signos.
signos.app · verify.signos.app · iOS App Store
| Repo | What it is |
|---|---|
| verify | Open-source, client-side verifier. Drop a Signos-sealed file in your browser and watch the four checks run: content hash, timestamp record, human presence, wallet registration. ~3,000 lines of TypeScript, runs entirely in the browser, no backend needed. |
| spec | Field reference for the SIGNOS_SEAL_V2 sealed file format — what data is embedded in a sealed image or video, where to find it in the file, and how to validate it. CC-BY-4.0. |
More reference tools and language ports coming.
The iOS app captures a photo or video, generates a BLAKE3 fingerprint of the file, and registers that fingerprint on the Algorand blockchain along with metadata that lets any third party verify the file later. The architecture is patent-pending.
The verification side is open source. If Signos disappears tomorrow, every sealed file ever created remains verifiable using public Algorand indexers and the code at Signos-app/verify.
This is the point: trust the math, not the company.
- Security: see each repo's
SECURITY.md - Press / partnerships / general:
russ@signos.app - Bug reports: open an issue on the relevant repo