一、说明
arbitrum链上加池分红LP功能由于uniswap的版本升级到v3,在v3新版本上已经不在支持直接在合约中实现代币的跨资金池兑换功能。因此,类似加池红花arb的功能只能在v2版本的流动性中实现;但是目前uniswap已经全面升级到v3版本,并且v4版本已经开源,v2版本已经彻底下线。在uniswap上已经无法实现该功能。目前支持lp加池分红的主流dex为sushiswap和pancakeswap。
arbitrum链的lp加池分红功能,目前只能在sushiswap的v2版本实现。
二、核心代码分析
以下为实现用户添加流动性获取分红的功能,根据用户持有的流动性LP的权重分红arb代币,同时每笔交易燃烧2%的本币到黑洞地址,基金会钱包地址2%回流arb代币的核心代码部分
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract LiquidityPool { mapping(address => uint256) private liquidity; address private constant blackHole = 0x0000000000000000000000000000000000000001; // 黑洞地址 address private constant foundationWallet = 0x1234567890; // 基金会钱包地址 uint256 private totalLiquidity; uint256 private constant burnRate = 2; // 燃烧率,2%燃烧到黑洞地址 uint256 private constant foundationRate = 2; // 基金会回流率,2%回流到基金会钱包地址 event LiquidityAdded(address indexed user, uint256 amount); event DividendsClaimed(address indexed user, uint256 amount); function addLiquidity(uint256 amount) external { require(amount > 0, "Amount must be greater than zero"); require(totalLiquidity + amount > totalLiquidity, "Overflow error"); require( liquidity[msg.sender] + amount > liquidity[msg.sender], "Overflow error" ); // Transfer LP tokens to the contract // Assuming the LP token is an ERC20 token // You'll need to include the necessary ERC20 contract code here liquidity[msg.sender] += amount; totalLiquidity += amount; emit LiquidityAdded(msg.sender, amount); } function claimDividends() external { uint256 userBalance = liquidity[msg.sender]; require(userBalance > 0, "No liquidity balance"); uint256 totalDividends = calculateDividends(); uint256 userDividends = (userBalance * totalDividends) / totalLiquidity; liquidity[msg.sender] = 0; // Transfer dividends in ARB token to the user's address // Assuming ARB token is an ERC20 token // You'll need to include the necessary ERC20 contract code here emit DividendsClaimed(msg.sender, userDividends); } function calculateDividends() private view returns (uint256) { // Calculate total dividends based on the liquidity weight of LP tokens // Add your custom dividend calculation logic here return 0; // Placeholder, replace with actual calculation } function burn(address token, uint256 amount) private { // Transfer and burn the specified amount of tokens to the black hole address // Assuming the token follows the ERC20 standard // You'll need to include the necessary ERC20 contract code here emit Transfer(token, blackHole, amount); } function distributeToFoundation(address token, uint256 amount) private { // Transfer the specified amount of tokens to the foundation wallet address // Assuming the token follows the ERC20 standard // You'll need to include the necessary ERC20 contract code here emit Transfer(token, foundationWallet, amount); } }
上述示例合约中,用户可以通过调用addLiquidity
函数向合约添加流动性。添加的流动性将保存在合约的liquidity
映射中,记录了每个用户的流动性份额。totalLiquidity
变量保存了总的流动性份额。
用户可以通过调用claimDividends
函数来领取分红。该函数会根据用户持有的流动性份额,计算应分发的分红金额,并将相应的ARB代币转账给用户。分红计算的具体逻辑需要根据你的要求进行实现。
合约中的burn
函数用于将指定数量的本币燃烧到黑洞地址。你需要在其中包含适用的ERC20合约代码,以实现燃烧功能。
distributeToFoundation
函数用于将指定数量的ARB代币转账给基金会钱包地址。同样,你需要在其中包含适用的ERC20合约代码,以实现转账功能。
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多模式(燃烧、回流指定营销地址、分红本币及任意币种,邀请推广八代收益,LP加池分红、交易分红、复利分红、NFT分红、自动筑池、动态手续费、定时开盘、回购)组合合约源代码下载:
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