Constitution Lottery accumulates fee seeds each L2 seal and draws every 100 L2 blocks. Winner = BigInt(settle_blockhash) % tickets. Ticket txid is receipt only.
lottery_id on-chain.
Gas: 1 KRAY → Treasury on create/buy. User pots keep 10% creator fee. Draw formula is public.
Require end block and/or target pot. Create costs 1 KRAY gas (extension popup).