Regarding $lit Lighter's Sybil check, it should be a locally optimal solution after back-engineering BN. It's known that BN won't be listed on D0 for PERP and SPAMT, and there will be a period of market observation (i.e., it can't perform too poorly). It's known that listing on BN requires airdropping n% of the coins to BN holders. There's observation pressure before and selling pressure after (the latter suppressing the former). If you don't manage your tokens well, you'll have to spend a lot of money, or rely on market buying to prop up the price. The latter is basically impossible in this market environment. If you're unwilling to spend money, then you can only control the tokens. So how do I control the tokens? Sybil checks are just one way…