The "if found to contain AI" part will possibly become harder and harder to detect over time, at which point you have to assume all entries could be AI, and flagging or making them pay a review fee would become the standard.
But it's similar to emails, under water your e-mail account has a 'trust score' based on previous behaviour, domain, etc. It could also come from the other side, if a scientist is attached to a university or other research body, they should sign off on a declaration that AI was not used (or used but clearly marked as such), with a big fine and reputation damage for the university if their researchers violate it.