Buy tickets, watch three clocks run down, and see who takes the pot. Every ticket is one entry; the draw picks a single winner weighted by tickets held, and they take the whole pot. It's play money only — coins can't be bought or cashed out for anything real, and every wallet resets to a fresh 1000 on the 1st of the month, so the leaderboard is really a monthly race, not a lifetime one.
atproto OAuth scope — it never touches your PDS) so
your wallet and leaderboard spot are actually yours instead of an anonymous browser id. Every balance resets
to 1000 coins at the start of each UTC month; whoever was on top gets
immortalized below first.