I don't understand the argument that crypto solves the problem of verifying real vs AI-generated content. how exactly does crypto help here? genuinely curious

The year is 2035, 80% of videos on YouTube are deepfakes. POTUS "saying" all kinds of stuff they don't say. A video appears that's signed by POTUS.eth, which is an actual Eth address controlled by the White House. You watch the signed video, knowing it's real, knowing it's not deepfaked by some actor.

cant this be solved using existing identity systems like twitter? you can differentiate content between official Potus account vs others