I appreciate this take and think it’s a great idea. You have everything written on an immutable distributed ledger (dare i say blockchain) so that no matter what is created and shared, it can be traced back.
You still allow it’s capabilities to evolve but you always will be able to confirm with a check.
It will be similar to the pictures of diseased lungs and hearts on cigarettes. People will still “buy” the “news” even though it’s fake.
At this point though, you can run a deepfake off a laptop, there would need to be a complete fork for existing code with heavy regulation.