Earlier quoted context omitted.
I think this will be a thing one day, where photos are digitally watermarked by the camera sensor in a non-repudiable manner.
This is a losing battle. You can always just record an AI video with your camera. Done, now you have a real video.
1. AI video watermarks that carry over even if a video of the AI video is taken
2. Cameras that can see AI video watermarks and put an AI video watermark on the videos of any AI videos they take