Reminds me of the old “evil bit” RFC[1]

[1] https://www.ietf.org/rfc/rfc3514.txt

If content with a "human-generated" flag is rated more highly in some way -- e.g. search results -- then of course spammers will automatically add that flag to their AI-generated garbage. How do you propose to prevent them?

I assume, like the actual meta generator tags, it wouldn't actually be a massive boon for regular search results

And if it's not: why bother.

I think something like this will definitely happen, and your suggestion is the cleanest implementation idea I've seen for it. I imagine there will be a service provided by Google and OpenAI where they verify your identity as a human and then grant you a token to put into your meta tags (wait a second... this sounds like sama's worldcoin idea...).

It will need to be based somewhat on the honor system (just because someone's proved they're a human doesn't mean they won't put their attestation on auto-generated text), but it definitely sounds better than nothing.

They'll still need to incentivize it somehow, though. Why do I as a human want to add that meta tag? If the answer is "better search ranking" then it renders the whole scheme mostly pointless because obviously spammers will want to acquire the attestation and attach it to their auto-generated content.