Defi/AVIVE質押挖礦系統模式開發詳情/Dapp/Defi/IDO/DAO

AVIVE流動性質押挖礦是一種基於區塊鏈的挖礦和質押合約，由AVIVE代幣和外部代幣構成。在本文中，我們將介紹如

何使用Solidity編寫一個簡單的AVIVE流動性質押挖礦合約，並演示它在以太坊區塊鏈上執行的基本步驟。

首先，我們需要定義我們的合約。合約應該包括以下資訊：

AVIVE代幣地址

外部代幣地址

流動性提供者之間的資金分配比例

挖礦獎勵的總量和每塊的獎勵數量

最小質押金額和質押期限

下面是一個簡單的Solidity程式碼示例：

pragma solidity ^0.8.0;

interface IERC20 {

    function approve(address spender, uint256 amount) external returns (bool);

    function transfer(address to, uint256 amount) external returns (bool);

    function balanceOf(address account) external view returns (uint256);

}

contract AVIVELiquidityMining {

    address public owner;

    address public aviveAddress;

    address public externalTokenAddress;

    uint256 public poolSize;

    uint256 public miningReward;

    uint256 public miningStep;

    uint256 public startDate;

    uint256 public endDate;

    uint256 public totalStaked;

    uint256 public minimumStake;

    

    mapping(address => uint256) public stakedAmount;

    mapping(address => uint256) public lastClaim;

    

    event Staked(address indexed user, uint256 amount);

    event Withdrawn(address indexed user, uint256 amount);

    event RewardPaid(address indexed user, uint256 reward);

    constructor(

        address aviveAddr,

        address externalTokenAddr,

        uint256 poolSz,

        uint256 rewardAmt,

        uint256 miningStepAmt,

        uint256 stDate,

        uint256 enDate,

        uint256 minStake

    ) {

        owner = msg.sender;

        aviveAddress = aviveAddr;

        externalTokenAddress = externalTokenAddr;

        poolSize = poolSz;

        miningReward = rewardAmt;

        miningStep = miningStepAmt;

        startDate = stDate;

        endDate = enDate;

        minimumStake = minStake;

        

        IERC20(aviveAddr).approve(address(this), poolSz);

        IERC20(externalTokenAddr).approve(address(this), poolSz);

    }

}