[abricq]

What I am waiting for is something similar to this (proof of image ownership / authenticity) embedded in smartphones cameras.

Not sure if ZK is the right way of achieving this. Even if the cryptographic guarantees are strong, generating these proofs is very expensive.

[realharo]

Some smartphone cameras already have this. Samsung tried it on the S25 but apparently did it wrong (https://petapixel.com/2025/02/13/samsungs-image-authenticity...). Google has it on the Pixel 10 line.

I think it's very likely the next iPhone will have some form of authenticity proof too, I just hope Apple doesn't go with its own standard again that's incompatible with everything else.

[bnreed]

Samsung were also the ones who demonstrated a fatal flaw in C2PA: device manufacturers are explicitly trusted in implementation.

C2PA requires trust that manufacturers would not be materially modifying the scene using convolutional neural networks to detect objects and add/remove details[1]

1) https://www.samsung.com/uk/support/mobile-devices/how-galaxy...

[jonathanstrange]

That's tricky because it needs to store and verify metadata that the user cannot edit and that allows one to distinguish a "normal" photo from a professional photography of a photo. The only place where this can happen are the camera settings but these are limited on smart phones and it's not easy to discern the two cases. I'm sure someone would print a 10x10 meter fake image, put it at just the right distance, and wait for the best indirect light to prove that the Yeti exists.

[realharo]

Just include a depth sensor, lidar, etc. I'm sure over time that will become increasingly easy to defeat too, but then we can just keep improving the sensors too.