I think the best proof of authenticity is already there, in the quirks each particular camera model has in the recording encoding. It's likely that a forgery wo

I think the best proof of authenticity is already there, in the quirks each particular camera model has in the recording encoding. It's likely that a forgery would easily be shown to have differences in encoding when compared with a video file from the same camera. It would be more difficult with an audio recorder, as you could just record the AI voice in the room. An audio expert could probably show that the acoustics of the fakery don't match where it was claimed to be recorded.