Defi/DAPP智慧合約質押挖礦系統開發/DeFi應用/NFT/DAPP
隨著加密貨幣市場的不斷髮展,DeFi(去中心化金融)市場也越來越受到關注。在DeFi市場中,LP(流動性提供者)智慧合
約質押挖礦已經成為一種非常受歡迎的方式。
LP智慧合約質押挖礦是一種DeFi挖礦方式,它透過提供流動性支援某個交易對的交易,來獲得獎勵代幣。LP智慧合約質押挖
礦是一個相對安全的投資方式,因為您可以透過提供流動性支援兩種資產的交易,來確保自己的資產價值。
以下是一個使用Solidity編寫的LP智慧合約質押挖礦的示例程式碼:
scssCopy codepragma solidity ^0.8.0; interface IERC20 { function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); function transfer(address recipient, uint256 amount) external returns (bool); function balanceOf(address account) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } contract LPStaking { uint256 public totalStaked; mapping(address => uint256) public balances; mapping(address => uint256) public rewards; uint256 public periodFinish; uint256 public rewardRate; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; IERC20 public token; IERC20 public lpToken; constructor(IERC20 _token, IERC20 _lpToken) public { token = _token; lpToken = _lpToken; } function staking(uint256 amount) public { require(amount > 0, "Cannot stake 0"); require(lpToken.transferFrom(msg.sender, address(this), amount), "Stake failed"); _updateReward(msg.sender); totalStaked += amount; balances[msg.sender] += amount; } function unstaking(uint256 amount) public { require(amount > 0, "Cannot unstake 0"); require(balances[msg.sender] >= amount, "Insufficient balance"); _updateReward(msg.sender); totalStaked -= amount; balances[msg.sender] -= amount; require(lpToken.transfer(msg.sender, amount), "Unstake failed"); } function getReward() public { _updateReward(msg.sender); uint256 reward = rewards[msg.sender]; if (reward > 0) { rewards[msg.sender] = 0; require(token.transfer(msg.sender, reward), "Reward failed"); } } function exit() external { unstaking(balances[msg.sender]); getReward(); } function _updateReward(address account) internal { rewardPerTokenStored = _currentRewardPerToken(); lastUpdateTime = _lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = _earned(account); } } function _earned(address account) internal view retur
來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/70027424/viewspace-2948560/,如需轉載,請註明出處,否則將追究法律責任。
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