Contract 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 11

 
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Block
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Value
0xddcf3f31e414c45a7457818983ae51f3d1e7f5b6bab73265550b05391fdf9d06Approve1146194172024-01-09 22:00:1147 days 3 hrs ago0x285904bccd6687f41d05a80be6fcd31bffd56c46 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000918441410.393038131
0x5fc7ef7a5da52f7ae2a510ebaf347d189ef4b8abe79913e0739b8fc3c44f00b7Approve1136674172023-12-18 21:06:5169 days 4 hrs ago0xd5612dd045399350f27eef4a198ee26d15ca7ac9 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0001563348650.101459061
0x57d5fce5b3a7921445e23edac0031fd079b3a7fc750d9cf5f95778e8a7d9c264Approve1127033962023-11-26 13:32:4991 days 11 hrs ago0x6a1afc8a229d820015361da64819e64e6a0258f9 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000472138680.009273505
0x2418c34fb8b6003282402761bc4f501f1845d82da1562aa9c6c25467da3afe4bApprove1127029412023-11-26 13:17:3991 days 12 hrs ago0x6a1afc8a229d820015361da64819e64e6a0258f9 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000492081530.007708258
0x62347aa4ef840576dcabf103315ec89d1d1c3b811b644302fffaffd34c850ea2Approve1121093372023-11-12 19:30:51105 days 5 hrs ago0x089a2c44131b1eb30cc4fc226560163fcef2c288 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000528678840.012495169
0x8d72acb356a3c348ac1063a03474983b5e37c4b5607ea0f9b0a163c097cfcbceApprove1111000092023-10-20 10:46:35128 days 14 hrs ago0xf50bf4cdf303f764155b73c42746775eb0b89a75 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000232717580.0182836
0xa85cb17c40d7aeff0518192dc9c957d174ffe533ad737f48c0ed4ad73262da3eApprove1107747932023-10-12 22:06:03136 days 3 hrs ago0xe1a9229006d237b23a833c00b056fea8c0a342ca IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000126432460.013090623
0x0ccf1e6891569f6ed1bbb5c0eba907e6d4dfb07f4f9295bf7feb4900424c237bApprove1099880942023-09-24 17:02:45154 days 8 hrs ago0xb964dad306ba4d74d906da4a48602c908e0af5cc IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000191678830.056464587
0x5ec33118772c7fea07649c38dd32a07a331b47e6f12fa7617f86dd96b8fbda39Approve1098687532023-09-21 22:44:43157 days 2 hrs ago0x0cf776d57e0223f47ed3a101927bb78d41ad8a13 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000192429810.082979667
0x47c2314dd3df0563a70bc91139c1ba13c31f8e4d903313b5bc2b17dad993ca7fApprove1095710292023-09-15 1:20:35164 days ago0x26daee818a1e38a46825fafb8a729a1c021cc726 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000723883260.000007708
0x155e8d18f5a37ef36bfa4a79801dc4f78ab40cc2fed2dfce89a10fb5e2bc68bcClaim Fees1095706452023-09-15 1:07:47164 days 12 mins ago0x26daee818a1e38a46825fafb8a729a1c021cc726 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000283701750.000535386
0x4827405df0eaa874634f08dc24e68c7cfc26dc1f4c4da3a03510b9089a73b50eApprove1086181092023-08-23 23:56:35186 days 1 hr ago0xe1a9229006d237b23a833c00b056fea8c0a342ca IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.000025451060.0000001
0x5d32be854ebf5b2ae378a84e0b5ba4066d646d80bb8723d610b6d7ab160699a9Approve1084917602023-08-21 1:44:57188 days 23 hrs ago0x7ad3486da9dc64b6e6e21f9c1fa8bd584e7d16c8 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000200430990.000500081
0x661f4e88c02370ec1b015cc2dfb8b3ad47fff863ea806d715571bfddb35df2adApprove1084030432023-08-19 0:27:43191 days 52 mins ago0xea2db1f298e99fb1e6cd5c324d49c766e129ada2 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000237139410.0005431
0xb97c555a47d74ae3918bab3b4d95c5ebfa5395278a116654f69f13e6b015ead1Approve1084022872023-08-19 0:02:31191 days 1 hr ago0xea2db1f298e99fb1e6cd5c324d49c766e129ada2 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000310022070.000012
0x6b1eda69a4279113fbdd735cdf2154439835329460a0080268496ea0dbb377acApprove1083926742023-08-18 18:42:05191 days 6 hrs ago0xce641a4a18a4be7b703848290251a3ee9288fee9 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000522228960.014895049
0x54cdb0dbab39d04531e07e8d606fac4caabae7cef51066e3a33145ce3161cdf4Claim Fees1083926612023-08-18 18:41:39191 days 6 hrs ago0xce641a4a18a4be7b703848290251a3ee9288fee9 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000462926860.048500072
0xc95d701107b624586d9f4c229e03bd2d0145caa8ad36de658a43b1b37ea1dbf2Approve1083593652023-08-18 0:11:47192 days 1 hr ago0x87e790ae036ea07f217dcfd18cb7a6ede7f55167 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000796522930.0147976
0x5af69fece4cd36f2a37e302a6f3a8b6ec0cd6c1e4ac12f92e7919d3d90529ffaApprove1083047582023-08-16 17:51:33193 days 7 hrs ago0x0cf776d57e0223f47ed3a101927bb78d41ad8a13 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000502866210.000500069
0xe59170b6f346a08201f8544f17bdb2368ca0e68edf11afad047a5dd60ab24056Approve1082003162023-08-14 7:50:09195 days 17 hrs ago0x309156fcb6d32e6a117e578553df76b326b62e28 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000220294410.000003757
0x07f8c3fdaf61c10d0e31bc7a7ee4f66304b0d289a3c272751c42734b2647183cApprove1076648952023-08-01 22:22:47208 days 2 hrs ago0x7f8bef6099f892521aa85c528f1f7f1b9ae1379d IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000342116140.000979761
0x70bb86657fdbe959195a2c7914b2a9e192a2588cc8f29c1bb7ef9b8c7f948d20Approve1075652222023-07-30 15:00:21210 days 10 hrs ago0xc5de27336e04e4a6eb1a766323d3ad1d21efa767 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000368674530.000500387
0x7e85ad971925b5ab3c4f7ec17c4bbb3cc907da2adfc01e83436a76fae85a4c94Approve1073991242023-07-26 18:43:45214 days 6 hrs ago0xe85909f8a1753734b19dd7abcfe40fda79f39c78 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000678443430.042508489
0x6d239bc28c92c8d121327aaecb3172d381d5152595df08c538cbde19b44fb4b1Approve1071680072023-07-21 10:19:51219 days 15 hrs ago0xa39ba2cd8658d0b69ba1880dcfbb65216ab33056 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0001257636492.00000008
0x9b91e3298e90dbb75705528db087ee7772d4b741ddfe802e09b54369cb373560Approve1070319122023-07-18 6:43:21222 days 18 hrs ago0xfc5723d6bc8da7cadde437fe7cea54219ce97a67 IN  0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH0.0000233061280.000005071
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x29062d803d8586fde18d37b4a5fa1bbf1b207c35 0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x81f638e5d063618fc5f6a976e48e9b803b3240c00 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Beefy: Old BIFI Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Optimism: OP Token0 ETH
0x0642b3592b9226231d4949a63c40bc9bd879f63fa468f3a73b396aa255b6b8631075582702023-07-30 11:08:37210 days 14 hrs ago 0x81f638e5d063618fc5f6a976e48e9b803b3240c0 Velodrome Finance: Pair Factory0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x335bd4ffa921160fc86ce3843f80a9941e7456c6
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Pair

Compiler Version
v0.8.13+commit.abaa5c0e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : Pair.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import 'contracts/libraries/Math.sol';
import 'contracts/interfaces/IERC20.sol';
import 'contracts/interfaces/IPair.sol';
import 'contracts/interfaces/IPairCallee.sol';
import 'contracts/factories/PairFactory.sol';
import 'contracts/PairFees.sol';

// The base pair of pools, either stable or volatile
contract Pair is IPair {

    string public name;
    string public symbol;
    uint8 public constant decimals = 18;

    // Used to denote stable or volatile pair, not immutable since construction happens in the initialize method for CREATE2 deterministic addresses
    bool public immutable stable;

    uint public totalSupply = 0;

    mapping(address => mapping (address => uint)) public allowance;
    mapping(address => uint) public balanceOf;

    bytes32 internal DOMAIN_SEPARATOR;
    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 internal constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    mapping(address => uint) public nonces;

    uint internal constant MINIMUM_LIQUIDITY = 10**3;

    address public immutable token0;
    address public immutable token1;
    address public immutable fees;
    address immutable factory;

    // Structure to capture time period obervations every 30 minutes, used for local oracles
    struct Observation {
        uint timestamp;
        uint reserve0Cumulative;
        uint reserve1Cumulative;
    }

    // Capture oracle reading every 30 minutes
    uint constant periodSize = 1800;

    Observation[] public observations;

    uint internal immutable decimals0;
    uint internal immutable decimals1;

    uint public reserve0;
    uint public reserve1;
    uint public blockTimestampLast;

    uint public reserve0CumulativeLast;
    uint public reserve1CumulativeLast;

    // index0 and index1 are used to accumulate fees, this is split out from normal trades to keep the swap "clean"
    // this further allows LP holders to easily claim fees for tokens they have/staked
    uint public index0 = 0;
    uint public index1 = 0;

    // position assigned to each LP to track their current index0 & index1 vs the global position
    mapping(address => uint) public supplyIndex0;
    mapping(address => uint) public supplyIndex1;

    // tracks the amount of unclaimed, but claimable tokens off of fees for token0 and token1
    mapping(address => uint) public claimable0;
    mapping(address => uint) public claimable1;

    event Fees(address indexed sender, uint amount0, uint amount1);
    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint reserve0, uint reserve1);
    event Claim(address indexed sender, address indexed recipient, uint amount0, uint amount1);

    event Transfer(address indexed from, address indexed to, uint amount);
    event Approval(address indexed owner, address indexed spender, uint amount);

    constructor() {
        factory = msg.sender;
        (address _token0, address _token1, bool _stable) = PairFactory(msg.sender).getInitializable();
        (token0, token1, stable) = (_token0, _token1, _stable);
        fees = address(new PairFees(_token0, _token1));
        if (_stable) {
            name = string(abi.encodePacked("StableV1 AMM - ", IERC20(_token0).symbol(), "/", IERC20(_token1).symbol()));
            symbol = string(abi.encodePacked("sAMM-", IERC20(_token0).symbol(), "/", IERC20(_token1).symbol()));
        } else {
            name = string(abi.encodePacked("VolatileV1 AMM - ", IERC20(_token0).symbol(), "/", IERC20(_token1).symbol()));
            symbol = string(abi.encodePacked("vAMM-", IERC20(_token0).symbol(), "/", IERC20(_token1).symbol()));
        }

        decimals0 = 10**IERC20(_token0).decimals();
        decimals1 = 10**IERC20(_token1).decimals();

        observations.push(Observation(block.timestamp, 0, 0));
    }

    // simple re-entrancy check
    uint internal _unlocked = 1;
    modifier lock() {
        require(_unlocked == 1);
        _unlocked = 2;
        _;
        _unlocked = 1;
    }

    function observationLength() external view returns (uint) {
        return observations.length;
    }

    function lastObservation() public view returns (Observation memory) {
        return observations[observations.length-1];
    }

    function metadata() external view returns (uint dec0, uint dec1, uint r0, uint r1, bool st, address t0, address t1) {
        return (decimals0, decimals1, reserve0, reserve1, stable, token0, token1);
    }

    function tokens() external view returns (address, address) {
        return (token0, token1);
    }

    // claim accumulated but unclaimed fees (viewable via claimable0 and claimable1)
    function claimFees() external returns (uint claimed0, uint claimed1) {
        _updateFor(msg.sender);

        claimed0 = claimable0[msg.sender];
        claimed1 = claimable1[msg.sender];

        if (claimed0 > 0 || claimed1 > 0) {
            claimable0[msg.sender] = 0;
            claimable1[msg.sender] = 0;

            PairFees(fees).claimFeesFor(msg.sender, claimed0, claimed1);

            emit Claim(msg.sender, msg.sender, claimed0, claimed1);
        }
    }

    // Accrue fees on token0
    function _update0(uint amount) internal {
        _safeTransfer(token0, fees, amount); // transfer the fees out to PairFees
        uint256 _ratio = amount * 1e18 / totalSupply; // 1e18 adjustment is removed during claim
        if (_ratio > 0) {
            index0 += _ratio;
        }
        emit Fees(msg.sender, amount, 0);
    }

    // Accrue fees on token1
    function _update1(uint amount) internal {
        _safeTransfer(token1, fees, amount);
        uint256 _ratio = amount * 1e18 / totalSupply;
        if (_ratio > 0) {
            index1 += _ratio;
        }
        emit Fees(msg.sender, 0, amount);
    }

    // this function MUST be called on any balance changes, otherwise can be used to infinitely claim fees
    // Fees are segregated from core funds, so fees can never put liquidity at risk
    function _updateFor(address recipient) internal {
        uint _supplied = balanceOf[recipient]; // get LP balance of `recipient`
        if (_supplied > 0) {
            uint _supplyIndex0 = supplyIndex0[recipient]; // get last adjusted index0 for recipient
            uint _supplyIndex1 = supplyIndex1[recipient];
            uint _index0 = index0; // get global index0 for accumulated fees
            uint _index1 = index1;
            supplyIndex0[recipient] = _index0; // update user current position to global position
            supplyIndex1[recipient] = _index1;
            uint _delta0 = _index0 - _supplyIndex0; // see if there is any difference that need to be accrued
            uint _delta1 = _index1 - _supplyIndex1;
            if (_delta0 > 0) {
                uint _share = _supplied * _delta0 / 1e18; // add accrued difference for each supplied token
                claimable0[recipient] += _share;
            }
            if (_delta1 > 0) {
                uint _share = _supplied * _delta1 / 1e18;
                claimable1[recipient] += _share;
            }
        } else {
            supplyIndex0[recipient] = index0; // new users are set to the default global state
            supplyIndex1[recipient] = index1;
        }
    }

    function getReserves() public view returns (uint _reserve0, uint _reserve1, uint _blockTimestampLast) {
        _reserve0 = reserve0;
        _reserve1 = reserve1;
        _blockTimestampLast = blockTimestampLast;
    }

    // update reserves and, on the first call per block, price accumulators
    function _update(uint balance0, uint balance1, uint _reserve0, uint _reserve1) internal {
        uint blockTimestamp = block.timestamp;
        uint timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
        if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
            reserve0CumulativeLast += _reserve0 * timeElapsed;
            reserve1CumulativeLast += _reserve1 * timeElapsed;
        }

        Observation memory _point = lastObservation();
        timeElapsed = blockTimestamp - _point.timestamp; // compare the last observation with current timestamp, if greater than 30 minutes, record a new event
        if (timeElapsed > periodSize) {
            observations.push(Observation(blockTimestamp, reserve0CumulativeLast, reserve1CumulativeLast));
        }
        reserve0 = balance0;
        reserve1 = balance1;
        blockTimestampLast = blockTimestamp;
        emit Sync(reserve0, reserve1);
    }

    // produces the cumulative price using counterfactuals to save gas and avoid a call to sync.
    function currentCumulativePrices() public view returns (uint reserve0Cumulative, uint reserve1Cumulative, uint blockTimestamp) {
        blockTimestamp = block.timestamp;
        reserve0Cumulative = reserve0CumulativeLast;
        reserve1Cumulative = reserve1CumulativeLast;

        // if time has elapsed since the last update on the pair, mock the accumulated price values
        (uint _reserve0, uint _reserve1, uint _blockTimestampLast) = getReserves();
        if (_blockTimestampLast != blockTimestamp) {
            // subtraction overflow is desired
            uint timeElapsed = blockTimestamp - _blockTimestampLast;
            reserve0Cumulative += _reserve0 * timeElapsed;
            reserve1Cumulative += _reserve1 * timeElapsed;
        }
    }

    // gives the current twap price measured from amountIn * tokenIn gives amountOut
    function current(address tokenIn, uint amountIn) external view returns (uint amountOut) {
        Observation memory _observation = lastObservation();
        (uint reserve0Cumulative, uint reserve1Cumulative,) = currentCumulativePrices();
        if (block.timestamp == _observation.timestamp) {
            _observation = observations[observations.length-2];
        }

        uint timeElapsed = block.timestamp - _observation.timestamp;
        uint _reserve0 = (reserve0Cumulative - _observation.reserve0Cumulative) / timeElapsed;
        uint _reserve1 = (reserve1Cumulative - _observation.reserve1Cumulative) / timeElapsed;
        amountOut = _getAmountOut(amountIn, tokenIn, _reserve0, _reserve1);
    }

    // as per `current`, however allows user configured granularity, up to the full window size
    function quote(address tokenIn, uint amountIn, uint granularity) external view returns (uint amountOut) {
        uint [] memory _prices = sample(tokenIn, amountIn, granularity, 1);
        uint priceAverageCumulative;
        for (uint i = 0; i < _prices.length; i++) {
            priceAverageCumulative += _prices[i];
        }
        return priceAverageCumulative / granularity;
    }

    // returns a memory set of twap prices
    function prices(address tokenIn, uint amountIn, uint points) external view returns (uint[] memory) {
        return sample(tokenIn, amountIn, points, 1);
    }

    function sample(address tokenIn, uint amountIn, uint points, uint window) public view returns (uint[] memory) {
        uint[] memory _prices = new uint[](points);

        uint length = observations.length-1;
        uint i = length - (points * window);
        uint nextIndex = 0;
        uint index = 0;

        for (; i < length; i+=window) {
            nextIndex = i + window;
            uint timeElapsed = observations[nextIndex].timestamp - observations[i].timestamp;
            uint _reserve0 = (observations[nextIndex].reserve0Cumulative - observations[i].reserve0Cumulative) / timeElapsed;
            uint _reserve1 = (observations[nextIndex].reserve1Cumulative - observations[i].reserve1Cumulative) / timeElapsed;
            _prices[index] = _getAmountOut(amountIn, tokenIn, _reserve0, _reserve1);
            // index < length; length cannot overflow
            unchecked {
                index = index + 1;
            }
        }
        return _prices;
    }

    // this low-level function should be called by addLiquidity functions in Router.sol, which performs important safety checks
    // standard uniswap v2 implementation
    function mint(address to) external lock returns (uint liquidity) {
        (uint _reserve0, uint _reserve1) = (reserve0, reserve1);
        uint _balance0 = IERC20(token0).balanceOf(address(this));
        uint _balance1 = IERC20(token1).balanceOf(address(this));
        uint _amount0 = _balance0 - _reserve0;
        uint _amount1 = _balance1 - _reserve1;

        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        if (_totalSupply == 0) {
            liquidity = Math.sqrt(_amount0 * _amount1) - MINIMUM_LIQUIDITY;
            _mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
        } else {
            liquidity = Math.min(_amount0 * _totalSupply / _reserve0, _amount1 * _totalSupply / _reserve1);
        }
        require(liquidity > 0, 'ILM'); // Pair: INSUFFICIENT_LIQUIDITY_MINTED
        _mint(to, liquidity);

        _update(_balance0, _balance1, _reserve0, _reserve1);
        emit Mint(msg.sender, _amount0, _amount1);
    }

    // this low-level function should be called from a contract which performs important safety checks
    // standard uniswap v2 implementation
    function burn(address to) external lock returns (uint amount0, uint amount1) {
        (uint _reserve0, uint _reserve1) = (reserve0, reserve1);
        (address _token0, address _token1) = (token0, token1);
        uint _balance0 = IERC20(_token0).balanceOf(address(this));
        uint _balance1 = IERC20(_token1).balanceOf(address(this));
        uint _liquidity = balanceOf[address(this)];

        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        amount0 = _liquidity * _balance0 / _totalSupply; // using balances ensures pro-rata distribution
        amount1 = _liquidity * _balance1 / _totalSupply; // using balances ensures pro-rata distribution
        require(amount0 > 0 && amount1 > 0, 'ILB'); // Pair: INSUFFICIENT_LIQUIDITY_BURNED
        _burn(address(this), _liquidity);
        _safeTransfer(_token0, to, amount0);
        _safeTransfer(_token1, to, amount1);
        _balance0 = IERC20(_token0).balanceOf(address(this));
        _balance1 = IERC20(_token1).balanceOf(address(this));

        _update(_balance0, _balance1, _reserve0, _reserve1);
        emit Burn(msg.sender, amount0, amount1, to);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external lock {
        require(!PairFactory(factory).isPaused());
        require(amount0Out > 0 || amount1Out > 0, 'IOA'); // Pair: INSUFFICIENT_OUTPUT_AMOUNT
        (uint _reserve0, uint _reserve1) =  (reserve0, reserve1);
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'IL'); // Pair: INSUFFICIENT_LIQUIDITY

        uint _balance0;
        uint _balance1;
        { // scope for _token{0,1}, avoids stack too deep errors
        (address _token0, address _token1) = (token0, token1);
        require(to != _token0 && to != _token1, 'IT'); // Pair: INVALID_TO
        if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out); // optimistically transfer tokens
        if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out); // optimistically transfer tokens
        if (data.length > 0) IPairCallee(to).hook(msg.sender, amount0Out, amount1Out, data); // callback, used for flash loans
        _balance0 = IERC20(_token0).balanceOf(address(this));
        _balance1 = IERC20(_token1).balanceOf(address(this));
        }
        uint amount0In = _balance0 > _reserve0 - amount0Out ? _balance0 - (_reserve0 - amount0Out) : 0;
        uint amount1In = _balance1 > _reserve1 - amount1Out ? _balance1 - (_reserve1 - amount1Out) : 0;
        require(amount0In > 0 || amount1In > 0, 'IIA'); // Pair: INSUFFICIENT_INPUT_AMOUNT
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        (address _token0, address _token1) = (token0, token1);
        if (amount0In > 0) _update0(amount0In * PairFactory(factory).getFee(stable) / 10000); // accrue fees for token0 and move them out of pool
        if (amount1In > 0) _update1(amount1In * PairFactory(factory).getFee(stable) / 10000); // accrue fees for token1 and move them out of pool
        _balance0 = IERC20(_token0).balanceOf(address(this)); // since we removed tokens, we need to reconfirm balances, can also simply use previous balance - amountIn/ 10000, but doing balanceOf again as safety check
        _balance1 = IERC20(_token1).balanceOf(address(this));
        // The curve, either x3y+y3x for stable pools, or x*y for volatile pools
        require(_k(_balance0, _balance1) >= _k(_reserve0, _reserve1), 'K'); // Pair: K
        }

        _update(_balance0, _balance1, _reserve0, _reserve1);
        emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
    }

    // force balances to match reserves
    function skim(address to) external lock {
        (address _token0, address _token1) = (token0, token1);
        _safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)) - (reserve0));
        _safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)) - (reserve1));
    }

    // force reserves to match balances
    function sync() external lock {
        _update(IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), reserve0, reserve1);
    }

    function _f(uint x0, uint y) internal pure returns (uint) {
        return x0*(y*y/1e18*y/1e18)/1e18+(x0*x0/1e18*x0/1e18)*y/1e18;
    }

    function _d(uint x0, uint y) internal pure returns (uint) {
        return 3*x0*(y*y/1e18)/1e18+(x0*x0/1e18*x0/1e18);
    }

    function _get_y(uint x0, uint xy, uint y) internal pure returns (uint) {
        for (uint i = 0; i < 255; i++) {
            uint y_prev = y;
            uint k = _f(x0, y);
            if (k < xy) {
                uint dy = (xy - k)*1e18/_d(x0, y);
                y = y + dy;
            } else {
                uint dy = (k - xy)*1e18/_d(x0, y);
                y = y - dy;
            }
            if (y > y_prev) {
                if (y - y_prev <= 1) {
                    return y;
                }
            } else {
                if (y_prev - y <= 1) {
                    return y;
                }
            }
        }
        return y;
    }

    function getAmountOut(uint amountIn, address tokenIn) external view returns (uint) {
        (uint _reserve0, uint _reserve1) = (reserve0, reserve1);
        amountIn -= amountIn * PairFactory(factory).getFee(stable) / 10000; // remove fee from amount received
        return _getAmountOut(amountIn, tokenIn, _reserve0, _reserve1);
    }

    function _getAmountOut(uint amountIn, address tokenIn, uint _reserve0, uint _reserve1) internal view returns (uint) {
        if (stable) {
            uint xy =  _k(_reserve0, _reserve1);
            _reserve0 = _reserve0 * 1e18 / decimals0;
            _reserve1 = _reserve1 * 1e18 / decimals1;
            (uint reserveA, uint reserveB) = tokenIn == token0 ? (_reserve0, _reserve1) : (_reserve1, _reserve0);
            amountIn = tokenIn == token0 ? amountIn * 1e18 / decimals0 : amountIn * 1e18 / decimals1;
            uint y = reserveB - _get_y(amountIn+reserveA, xy, reserveB);
            return y * (tokenIn == token0 ? decimals1 : decimals0) / 1e18;
        } else {
            (uint reserveA, uint reserveB) = tokenIn == token0 ? (_reserve0, _reserve1) : (_reserve1, _reserve0);
            return amountIn * reserveB / (reserveA + amountIn);
        }
    }

    function _k(uint x, uint y) internal view returns (uint) {
        if (stable) {
            uint _x = x * 1e18 / decimals0;
            uint _y = y * 1e18 / decimals1;
            uint _a = (_x * _y) / 1e18;
            uint _b = ((_x * _x) / 1e18 + (_y * _y) / 1e18);
            return _a * _b / 1e18;  // x3y+y3x >= k
        } else {
            return x * y; // xy >= k
        }
    }

    function _mint(address dst, uint amount) internal {
        _updateFor(dst); // balances must be updated on mint/burn/transfer
        totalSupply += amount;
        balanceOf[dst] += amount;
        emit Transfer(address(0), dst, amount);
    }

    function _burn(address dst, uint amount) internal {
        _updateFor(dst);
        totalSupply -= amount;
        balanceOf[dst] -= amount;
        emit Transfer(dst, address(0), amount);
    }

    function approve(address spender, uint amount) external returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
        require(deadline >= block.timestamp, 'Pair: EXPIRED');
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes(name)),
                keccak256(bytes('1')),
                block.chainid,
                address(this)
            )
        );
        bytes32 digest = keccak256(
            abi.encodePacked(
                '\x19\x01',
                DOMAIN_SEPARATOR,
                keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
            )
        );
        address recoveredAddress = ecrecover(digest, v, r, s);
        require(recoveredAddress != address(0) && recoveredAddress == owner, 'Pair: INVALID_SIGNATURE');
        allowance[owner][spender] = value;

        emit Approval(owner, spender, value);
    }

    function transfer(address dst, uint amount) external returns (bool) {
        _transferTokens(msg.sender, dst, amount);
        return true;
    }

    function transferFrom(address src, address dst, uint amount) external returns (bool) {
        address spender = msg.sender;
        uint spenderAllowance = allowance[src][spender];

        if (spender != src && spenderAllowance != type(uint).max) {
            uint newAllowance = spenderAllowance - amount;
            allowance[src][spender] = newAllowance;

            emit Approval(src, spender, newAllowance);
        }

        _transferTokens(src, dst, amount);
        return true;
    }

    function _transferTokens(address src, address dst, uint amount) internal {
        _updateFor(src); // update fee position for src
        _updateFor(dst); // update fee position for dst

        balanceOf[src] -= amount;
        balanceOf[dst] += amount;

        emit Transfer(src, dst, amount);
    }

    function _safeTransfer(address token,address to,uint256 value) internal {
        require(token.code.length > 0);
        (bool success, bytes memory data) =
        token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))));
    }
}

File 2 of 8 : Math.sol
pragma solidity 0.8.13;

library Math {
    function max(uint a, uint b) internal pure returns (uint) {
        return a >= b ? a : b;
    }
    function min(uint a, uint b) internal pure returns (uint) {
        return a < b ? a : b;
    }
    function sqrt(uint y) internal pure returns (uint z) {
        if (y > 3) {
            z = y;
            uint x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
    function cbrt(uint256 n) internal pure returns (uint256) { unchecked {
        uint256 x = 0;
        for (uint256 y = 1 << 255; y > 0; y >>= 3) {
            x <<= 1;
            uint256 z = 3 * x * (x + 1) + 1;
            if (n / y >= z) {
                n -= y * z;
                x += 1;
            }
        }
        return x;
    }}
}

File 3 of 8 : IERC20.sol
pragma solidity 0.8.13;

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function transfer(address recipient, uint amount) external returns (bool);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function balanceOf(address) external view returns (uint);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function approve(address spender, uint value) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

File 4 of 8 : IPair.sol
pragma solidity 0.8.13;

interface IPair {
    function metadata() external view returns (uint dec0, uint dec1, uint r0, uint r1, bool st, address t0, address t1);
    function claimFees() external returns (uint, uint);
    function tokens() external returns (address, address);
    function transferFrom(address src, address dst, uint amount) external returns (bool);
    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function burn(address to) external returns (uint amount0, uint amount1);
    function mint(address to) external returns (uint liquidity);
    function getReserves() external view returns (uint _reserve0, uint _reserve1, uint _blockTimestampLast);
    function getAmountOut(uint, address) external view returns (uint);
}

File 5 of 8 : IPairCallee.sol
pragma solidity 0.8.13;

interface IPairCallee {
    function hook(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

File 6 of 8 : PairFactory.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import 'contracts/interfaces/IPairFactory.sol';
import 'contracts/Pair.sol';

contract PairFactory is IPairFactory {

    bool public isPaused;
    address public pauser;
    address public pendingPauser;

    uint256 public stableFee;
    uint256 public volatileFee;
    uint256 public constant MAX_FEE = 5; // 0.05%
    address public feeManager;
    address public pendingFeeManager;

    mapping(address => mapping(address => mapping(bool => address))) public getPair;
    address[] public allPairs;
    mapping(address => bool) public isPair; // simplified check if its a pair, given that `stable` flag might not be available in peripherals

    address internal _temp0;
    address internal _temp1;
    bool internal _temp;

    event PairCreated(address indexed token0, address indexed token1, bool stable, address pair, uint);

    constructor() {
        pauser = msg.sender;
        isPaused = false;
        feeManager = msg.sender;
        stableFee = 2; // 0.02%
        volatileFee = 2;
    }

    function allPairsLength() external view returns (uint) {
        return allPairs.length;
    }

    function setPauser(address _pauser) external {
        require(msg.sender == pauser);
        pendingPauser = _pauser;
    }

    function acceptPauser() external {
        require(msg.sender == pendingPauser);
        pauser = pendingPauser;
    }

    function setPause(bool _state) external {
        require(msg.sender == pauser);
        isPaused = _state;
    }

    function setFeeManager(address _feeManager) external {
        require(msg.sender == feeManager, 'not fee manager');
        pendingFeeManager = _feeManager;
    }

    function acceptFeeManager() external {
        require(msg.sender == pendingFeeManager, 'not pending fee manager');
        feeManager = pendingFeeManager;
    }

    function setFee(bool _stable, uint256 _fee) external {
        require(msg.sender == feeManager, 'not fee manager');
        require(_fee <= MAX_FEE, 'fee too high');
        require(_fee != 0, 'fee must be nonzero');
        if (_stable) {
            stableFee = _fee;
        } else {
            volatileFee = _fee;
        }
    }

    function getFee(bool _stable) public view returns(uint256) {
        return _stable ? stableFee : volatileFee;
    }

    function pairCodeHash() external pure returns (bytes32) {
        return keccak256(type(Pair).creationCode);
    }

    function getInitializable() external view returns (address, address, bool) {
        return (_temp0, _temp1, _temp);
    }

    function createPair(address tokenA, address tokenB, bool stable) external returns (address pair) {
        require(tokenA != tokenB, 'IA'); // Pair: IDENTICAL_ADDRESSES
        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'ZA'); // Pair: ZERO_ADDRESS
        require(getPair[token0][token1][stable] == address(0), 'PE'); // Pair: PAIR_EXISTS - single check is sufficient
        bytes32 salt = keccak256(abi.encodePacked(token0, token1, stable)); // notice salt includes stable as well, 3 parameters
        (_temp0, _temp1, _temp) = (token0, token1, stable);
        pair = address(new Pair{salt:salt}());
        getPair[token0][token1][stable] = pair;
        getPair[token1][token0][stable] = pair; // populate mapping in the reverse direction
        allPairs.push(pair);
        isPair[pair] = true;
        emit PairCreated(token0, token1, stable, pair, allPairs.length);
    }
}

File 7 of 8 : PairFees.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import 'contracts/interfaces/IERC20.sol';

// Pair Fees contract is used as a 1:1 pair relationship to split out fees, this ensures that the curve does not need to be modified for LP shares
contract PairFees {

    address internal immutable pair; // The pair it is bonded to
    address internal immutable token0; // token0 of pair, saved localy and statically for gas optimization
    address internal immutable token1; // Token1 of pair, saved localy and statically for gas optimization

    constructor(address _token0, address _token1) {
        pair = msg.sender;
        token0 = _token0;
        token1 = _token1;
    }

    function _safeTransfer(address token,address to,uint256 value) internal {
        require(token.code.length > 0);
        (bool success, bytes memory data) =
        token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))));
    }

    // Allow the pair to transfer fees to users
    function claimFeesFor(address recipient, uint amount0, uint amount1) external {
        require(msg.sender == pair);
        if (amount0 > 0) _safeTransfer(token0, recipient, amount0);
        if (amount1 > 0) _safeTransfer(token1, recipient, amount1);
    }

}

File 8 of 8 : IPairFactory.sol
pragma solidity 0.8.13;

interface IPairFactory {
    function allPairsLength() external view returns (uint);
    function isPair(address pair) external view returns (bool);
    function pairCodeHash() external pure returns (bytes32);
    function getPair(address tokenA, address token, bool stable) external view returns (address);
    function createPair(address tokenA, address tokenB, bool stable) external returns (address pair);
}

Settings
{
  "remappings": [
    "LayerZero/=lib/LayerZero/contracts/",
    "ds-test/=lib/ds-test/src/",
    "forge-optimism/=lib/rollcall/lib/forge-optimism/src/",
    "forge-std/=lib/forge-std/src/",
    "lib/=lib/rollcall/src/lib/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "rollcall/=lib/rollcall/src/",
    "solmate/=lib/solmate/src/",
    "utils/=test/utils/",
    "contracts/=contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london"
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"Burn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"}],"name":"Fees","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0In","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1In","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount0Out","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1Out","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"Swap","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"reserve0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"reserve1","type":"uint256"}],"name":"Sync","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"blockTimestampLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"burn","outputs":[{"internalType":"uint256","name":"amount0","type":"uint256"},{"internalType":"uint256","name":"amount1","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimFees","outputs":[{"internalType":"uint256","name":"claimed0","type":"uint256"},{"internalType":"uint256","name":"claimed1","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"claimable0","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"claimable1","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"}],"name":"current","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentCumulativePrices","outputs":[{"internalType":"uint256","name":"reserve0Cumulative","type":"uint256"},{"internalType":"uint256","name":"reserve1Cumulative","type":"uint256"},{"internalType":"uint256","name":"blockTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"fees","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenIn","type":"address"}],"name":"getAmountOut","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReserves","outputs":[{"internalType":"uint256","name":"_reserve0","type":"uint256"},{"internalType":"uint256","name":"_reserve1","type":"uint256"},{"internalType":"uint256","name":"_blockTimestampLast","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"index0","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"index1","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastObservation","outputs":[{"components":[{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"uint256","name":"reserve0Cumulative","type":"uint256"},{"internalType":"uint256","name":"reserve1Cumulative","type":"uint256"}],"internalType":"struct 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Deployed Bytecode

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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