Watermars in ai generated stuff

I had a question if they're working on or if there ever is going to be required water marks required in videos made by ai? Because I learned that all images generated by Google image generators have water marks embedded within the code of the pic that only a computer can see. So at least with Google images you can use a computer to scan it to tell it was made by a computer. I was hoping that there will be a future where this is so and required of all ai generated stuff. Because maybe in the future you just feed a link to a website to and it will be able to detect the water mark and tell you. Also I hope they do because imagine how if this is required it would put a stop in scammers being able to use AI to scam people because with the watermark law in effect and the public tools online to be able to read those water marks would help a lot. Obvious it would not eliminate the problem completely because there would be people who would find ways around it and generate videos without and pics with out it. Also the problem is making it a golbal wide law so the scammers and people cannot effectively hide and do it in other countries.