马蹄链佛萨奇2.0系统模式开发丨佛萨奇dapp系统开发设计模型

质押挖矿分红通过参与智能合约的质押挖矿，获得相应的代币奖励和分红，使用户能够更好地参与到DeFi生态中。

scssCopy codepragma solidity ^0.8.0;
        _totalSupply += amount;
        _lastDividend[msg.sender] = _dividendPerToken;
    }

    function unstake(uint256 amount) external { 
           require(amount > 0, "Amount must be greater than 0");
                   require(_balances[msg.sender] >= amount, "Insufficient balance");
contract StakingContract {
    mapping(address => uint256) private _balances;


    function stake(uint256 amount) external {
            require(amount > 0, "Amount must be greater than 0");
                    _updateDividend();
        }            
        _balances[msg.sender] += amount;
    mapping(address => uint256) private _lastDividend;
    uint256 private _totalSupply;
    uint256 private _dividendPerToken;
    }
                           _updateDividend();
        _balances[msg.sender] -= amount;
        _totalSupply -= amount;
        _lastDividend[msg.sender] = _dividendPerToken;

    }
}

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