Next task BTSX/Entity or person...
It is both great (from a privacy perspective) and also a little sad (from a data analysis perspective) that we cannot figure out BTSX/person distributions.
Then again, we could set up a voting system with traceable ring signatures to allow anonymous polling of BTSX stake. The system could have 20 million votes. You provide proof of ownership of an unspent transaction balance (unspent up to some recent block number we all agree on). That proof of ownership gives you N = floor(balance/(100 BTSX)) votes. You are allowed to submit a ballot for each vote (using traceable ring signatures to vote anonymously but also prevent double voting) in which you sign the ballot with a private key. By using the same private key for all of the ballots allocated from each vote coming from all of a single individual's unspent balances, people can have a very good lower bound estimate on how much BTSX each person owns without identifying the actual owners even when they later spend their balances. Of course, people could simply sign each ballot with a unique private key to make it seem like there is less wealth concentration than there really is, so the accuracy of this method depends entirely on how honest people want to be (however individual dishonest actors cannot make it appear that there is higher wealth concentration than there really is unless they collude together). Unfortunately, besides being so much work to implement, a lot of people would probably just prefer not to take part in the polling, leading to very incomplete and unhelpful results. Maybe there could be some incentive structure where a reward, determined from a superlinear function of each person's final balance, was handed out to motivate people to report all of their combined wealth. The reward would also need to be designed in a way (likely through traceable ring signatures) to be claimed without linking the claimer back to the balances for the sake of privacy.