blocktree, more than blockchain. Aren't there some altcoins that have attempted to do a blocktree? I haven't paid much attention to them, other than reading a

blocktree, more than blockchain. Aren't there some altcoins that have attempted to do a blocktree? I haven't paid much attention to them, other than reading about one a while back, but it seems like that wouldn't really go anywhere because once you do away with a single, unified, public view of truth you might as well be using a lightning network?