Building trust infrastructure for the post-AI era.
When generative AI makes any content trivially forgeable, the only sustainable answer is proving authenticity at the hardware level.
We let real content prove itself.
Real and fake media sit side by side, and the line between them is vanishing. Detection algorithms are in a losing arms race against generation.
mutual builds hardware that flips the problem: instead of detecting fakes, we let authentic content carry cryptographic proof of its origin, signed at the moment of capture, before software can intervene.
Hardware-rooted
Cryptographic keys live in the silicon. No software can extract or forge them.
Open standard
Built on C2PA. Interoperable by design, not locked into a proprietary ecosystem.
Sensor-level signing
Signatures happen at the moment light hits the sensor. The earliest possible point.
The team
Yejun Jang
Alex Jihoon Park
Kihyun Kim
Wonbeen Yoon
Hyeongtak Ryu
Technology
Every stage uses ECDSA signatures + C2PA manifests. Only the hardware platform evolves.
TrustZone Signing
Key storage and signing in ARM TrustZone Secure World. Software-isolated prototype.
Secure Element
Signing in a dedicated secure element. Keys physically separated from the main processor.
Sensor-embedded ASIC
Signing logic embedded directly in the image sensor. Light to signature, all in one chip.