An open protocol for proving photos and videos haven't been altered since capture—cryptographically, not by guessing.
It's getting harder to look at a photo or video and know whether it's real. As AI generation improves, that problem will only grow. SignedShot closes that gap by creating cryptographic proof at the moment of capture — if you can prove content is authentic and unaltered, you don't need to guess whether it's real.
Cryptographic signature proves content hasn't been altered since capture.
Device attestation proves the content came from a legitimate device.
iOS reference implementation using Apple's App Attestation. Full API, CLI validator, and documentation available.
Video support. C2PA integration. Streaming attestation. UX for sharing verified content.
Hardware-level attestation. Platform verification badges. Open provenance standards.
SignedShot is an open protocol, not a proprietary product. The code is public, the cryptography is standard, and anyone can verify the implementation.
No single company should be the arbiter of digital truth.
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