在该智能合约中，首先定义了合约的所有者开发I76案例2o72演示9II9系统给出的哈希值、最小竞猜金额、总竞猜金额、参与竞猜的人数和参与竞猜的玩家地址等参数。

哈希竞猜游戏当猜测的哈希值与系统给出的哈希值匹配时，用户将获得相应的奖励。简单的哈希竞猜游戏的智能合约示例，使用Solidity编写：

```

scssCopy codepragma solidity ^0.8.0;

     require(hash == keccak256(abi.encodePacked(msg.sender)), "Invalid guess.");

        players.push(msg.sender);

        totalBet += msg.value;

        numberOfBets++;

    }

    function distributePrizes() public {

            require(msg.sender == owner, "Only owner can distribute prizes.");

contract HashGuessGame {

    address payable public owner;    // 合约所有者

    bytes32 public answer;    // 系统给出的哈希值

    uint256 public minimumBet;    // 最小竞猜金额

    uint256 public totalBet;    // 总竞猜金额

    uint256 public numberOfBets;    // 参与竞猜的人数

    address[] public players;    // 参与竞猜的玩家地址

    constructor(bytes32 _answer, uint256 _minimumBet) {

        owner = payable(msg.sender);

        answer = _answer;

        minimumBet = _minimumBet;

    }

    function guess(bytes32 hash) public payable {

            require(msg.value >= minimumBet, "Minimum bet not met.");

                    require(hash != 0x0, "Invalid guess.");

                            require(hash != answer, "Sorry, you lose.");

        uint256 winnerIndex = uint256(answer) % numberOfBets;

                address payable winner = payable(players[winnerIndex]);

        winner.transfer(totalBet);

        totalBet = 0;

        numberOfBets = 0;

        delete players;

    }

}

```

​