No technology will solve willful misbehavior. If you want Apple to solve this as quickly as possible, throw someone in jail for contempt of court.

It's a lot more complicated than that due to edge cases like format conversion, resolution downscaling, chunking, etc but people are working on a solution in this vein: https://contentauthenticity.org/

Full-disclosure: I work (on completely unrelated stuff) at one of the organizations involved