You’re talking about possible sibyl attacks. Yes that’s a concern but there’s a large literature on how to reduce their threat. This might be a place where “pr

You’re talking about possible sibyl attacks. Yes that’s a concern but there’s a large literature on how to reduce their threat. This might be a place where “proof of x” concepts from crypto land work. But we don’t need to go all the way to the maximal solution for it to be practical.