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CHASTLE is a 5,000-piece royal court on BNB Chain where rank is not bought and never drawn by luck — it is proven with proof-of-work. Holders of an Agent ID grind a keccak256 proof bound to their wallet; the proof's leading zero bits set the highest rank they may claim: Pawn (24–27 bits, 2,500 seats), Rook (28–31, 1,500), Knight (32–35, 700), Queen (36–39, 250), and King (40+, only 50 seats, opening after 1,000 mints). When a rank fills, a proof takes the highest rank still open below it, and the proof's true bits remain recorded on-chain as the unit's power. Every one of the 5,000 portraits is unique. First 2 claims per wallet are free while the 2,000 free seats last (FCFS), then a flat 0.0004 BNB per mint, cap 10 per wallet. Mint is live now at chastle.pages.dev.
