There’s no realistic way to enforce that. The answer is to go the other way. We used to have systems in place for accountability of information. We need to bring back institutions for journalism and historians to be trustworthy sources that cite their work and show their research.
Don’t get me started on the sham that is recycling icons 😂
I’m all for making regulation that would require media companies to disclose that something is fake if it could be reasonably taken as truth. But that doesn’t solve the problem of anyone with a computer pumping fake images on to the web. What you’re suggesting would require a world government that has chip level access to anything with a CPU.
As for the public enforcing the truth; that’s what I’m suggesting. Assume anything you see online could be fake. Only trust trustworthy institutions that back up their media with verifiable facts.