I think we are reaching a point where some kind of solid attestation that things are not AI generated would be very valuable, for all kinds of different media (printed word, photo, video, etc).

I'm not sure how you would actually do any of that attestation, if it's even possible. Text seems especially difficult. Maybe photo/video could be achieved with specialized hardware and cryptographic signing though I don't know much about either so I'm not sure how it would work. Maybe all that attestation would also tie in to some kind of universal personal identifier online, so that bad actors can be tracked or excluded and can't repeatedly spin up new accounts.

It might mean a big reduction in privacy for certain online spaces that opt in to such a system... but the alternative of all trust being eroded and voices drowned out by a sea of bots or generated content seems potentially worse.