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Am I just a crazy cynic or are ZK proofs here just a buzzword.

Like, how is this any different than having each camera equipped with a vendor controlled key and then having it sign every photo?

If you can spoof the sensor enough to reuse the key, couldn't you spoof the sensor enough to fool a verifier into believing your false proof?

You take a photo of an AI generated photo. What's yr proof worth then?

Yes, IIRC if you measure an image signal, i.e. here: image, that is at twice the resolution of the sensor you use, there won't be any artifacts.

Nyquist–Shannon sampling theorem.

But, if the sony sensor also measures depth information, this attack vector will fall flat. Pun intended.

The technique you describe has seen some use by some major vendors for 5 to 10 years right?

Not sure.