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Yep, I think the world would benefit much more if they just put the ability to do digital signatures in the CMOS. People want to do touchups, they just add a link to the original signed image in the EXIF do folks can take a look for themselves.

Definitely not going to stop state actors, but might help with some of the noise from doctored images/video.

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unlikely to be useful unless you're shooting in RAW and need evidence that a specific sensor took the shot. phones and cameras do a lot of post processing before an image hits the disk and the original is discarded.

Eh, the purpose would be to demonstrate that a camera took the shot. The fact that it id’s which one specifically isn’t particularly material but might be a little useful in some circumstances.

You wouldn’t need to publish the unprocessed photo, just keep it in escrow.

Nothing stops you editing the photo, printing it out, and taking a photo of the printout.

The new photo would still get signed, and look original.

And if you did this in the right conditions, it wouldn't be possible to tell it was a photo of a print.

Since all the metadata (exposure time, shutter speed and so on) in the photo is signed as well, it would be possible to tell.

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