That part doesn’t really need ML of any kind; ultimately unless a watermark is based on a rigorous and proven cryptographic scheme, it can be faked. They are a

That part doesn’t really need ML of any kind; ultimately unless a watermark is based on a rigorous and proven cryptographic scheme, it can be faked. They are apparently not doing anything like that, it’s just “hey, these photo sites are all a bit different”. Well, that’s what they’re saying publicly anyway, could be complete bs and every sensor has a government sanctioned backdoor in it.