Or in general, a way to digitally sign a tamper-free video recoding made with a camera from a reputable manufacturer. Maybe a regular iPhone already has enough integrity checks and security contexts to achieve this.
I'm almost certain that an iPhone camera can go that, and the reason that Apple controls the full stack. It's necessary but not sufficient, since it's missing the identity maintenance when media leaves the device. Apple would have to place a cryptographically signed digital watermark into a global blockchain so that the analog hole can be closed. All devices that present that media back to a human would need to verify the contents provenance chain back to the initial capture device.
There's nothing missing technology wise to achieving this but we, at this point, lack the collective will and the regulatory regime. I do foresee a future where this is the norm and that anything you listen to or watch you'll be able to trace back to the device that captured the data.
I'm almost certain that an iPhone camera can go that, and the reason that Apple controls the full stack. It's necessary but not sufficient, since it's missing the identity maintenance when media leaves the device. Apple would have to place a cryptographically signed digital watermark into a global blockchain so that the analog hole can be closed. All devices that present that media back to a human would need to verify the contents provenance chain back to the initial capture device.
There's nothing missing technology wise to achieving this but we, at this point, lack the collective will and the regulatory regime. I do foresee a future where this is the norm and that anything you listen to or watch you'll be able to trace back to the device that captured the data.