Havoc Win 的可证明公平机制

每一局已完成的 Havoc 原创游戏都附带可检查的加密证据。承诺哈希在开局前锁定隐藏的服务器种子；揭示后的种子、客户端种子和随机数让结算结果可以被重新计算。

The server publishes a hash commitment before the outcome is known to you.
Your client seed and the round nonce make each wager's input explicit.
After reveal, the verifier recomputes the round and checks it against the commitment.