Contract 0x985612ff2c9409174fedcff23d4f4761af124f88 12

 
Txn Hash Method
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0x2bd3e8d7ee8ea70ff12b7c3784544c7db2809535c47c860d1424d51066f3d3dfApprove1160806942024-02-12 17:49:2513 days 8 hrs ago0x0e9d0c4ca23480bb1fd70337ad6dd8d925d13e43 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0001165891010.100632133
0x6cfedee76dc92fd6afd8364e69703eb74b7db18925dfebbe3037caae845b0b3eApprove1156390672024-02-02 12:28:3123 days 13 hrs ago0x4f9afede969310e108395ab40e77a37b255b7488 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.000035079950.005866913
0x84c52ec9993516c86aa514a0761de7c02e468effe394da62c63dc403bbe83dbcApprove1154374202024-01-28 20:26:5728 days 5 hrs ago0x69323bd279f2ed51bffe88ab8f25a46fc53562bb IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000168093490.007328
0x02b15b0a45c698f51fd86ded8db313d681d97cc14dfae281da813ff848b7b67fApprove1154374142024-01-28 20:26:4528 days 5 hrs ago0x69323bd279f2ed51bffe88ab8f25a46fc53562bb IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000170822980.0074936
0xb816c9d68f6c94bbd037637b769cc14511fd073359be0f3d45b51f88a8d05b9cClaim Fees1152305022024-01-24 1:29:4133 days 32 mins ago0xc8bb7b8c5fef1692da769989e6183d608f84b966 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000135425450.004090925
0x77a5193197ce1d04255cd0b3ed52aa5e72059c50175d201181f9ff146ccef8c8Approve1152303292024-01-24 1:23:5533 days 38 mins ago0xc8bb7b8c5fef1692da769989e6183d608f84b966 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000200529730.003855677
0xd382759a260ce65adc962ff6d093cb2d906b11b26d5179374ce1b694c38e9ff3Approve1148472882024-01-15 4:35:5341 days 21 hrs ago0x7c2b924ff6abc40f1a30dd3308288af7d488dab4 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000340402960.041355715
0xb1632037c39e4561807faf33b434c7f7755e4b1e1bec32ec7b996781d60abdc3Approve1146540592024-01-10 17:14:5546 days 8 hrs ago0x11a49404b74ae8dd718e339bcf2d152b71e08ff2 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000772706330.01
0xd96cfcd136bd8e5b5928aa7e4367b04cbc65d988eee16e9770da00cfd4d4991fApprove1145595372024-01-08 12:44:1148 days 13 hrs ago0x2aec5e040d17c68b8270c76296120cbeff5dcea7 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000356143270.006268695
0xb807436aab03eb01e2e4e72a2b48bd25941c55f15248c85c81f7f3608fb654faApprove1141317572023-12-29 15:04:5158 days 10 hrs ago0x926e8c83d5e09ef85116eeb7bd29388524d66855 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000497365340.00469917
0x34dfb42b4d4ccd42c6d7fed80125b42ad5f484f81b3a3e26bbfe662b94d700deApprove1140622162023-12-28 0:26:4960 days 1 hr ago0x4602525fdeee4084ae863c5a81d605b498f4714e IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000407851820.00649521
0xc80a6b74fb81b500740cca6a3804243531f88bfcf6f35532ccdeb7bd1e0eb4ddApprove1137398252023-12-20 13:20:2767 days 12 hrs ago0x7931422a0d7c01563ffed338ce9b25fb4662c8ff IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0001161291760.004595925
0x9f121842bb56a69352775092c91f27bec8fdef7778c561f39340328070f5e42fApprove1137398212023-12-20 13:20:1967 days 12 hrs ago0x7931422a0d7c01563ffed338ce9b25fb4662c8ff IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0001155754810.004800995
0x4c12e64d02970f3e6d7ec04c4025837ed05f29363cd6b2c4b530a56ea1016179Approve1137398172023-12-20 13:20:1167 days 12 hrs ago0x7931422a0d7c01563ffed338ce9b25fb4662c8ff IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0001161363540.00489165
0x05a0c755756c7fb6309a8788b6c13e9fa0b3da3af61673c6fa55a526211236b6Approve1136435202023-12-18 7:50:1769 days 18 hrs ago0x7f36a317ea8da45693ed087e64baf0d321aaece3 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000568370110.0152602
0x88ddc4ba2fc70036de612fb8b3125d087632014394d6f07efbb0d045fcbf1003Approve1133842732023-12-12 7:48:4375 days 18 hrs ago0xe64113140960528f6af928d7ca4f45d192286a7a IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000504870870.010497032
0x5f365b510688f8a253b62b0550b1a6362a206f6ca6562e59e2033f7d40b8099eApprove1130169092023-12-03 19:43:1584 days 6 hrs ago0x9ea6cb453b9dc345075da025e6cfe6050282eee0 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000589579940.0114898
0xe6eea5ebeddb5b3ed17a394cb008d1fa752d30d53a87c4cf1d49156e3304f83fApprove1128650562023-11-30 7:21:2987 days 18 hrs ago0xd180dd68759a1570a66439548319b94240f309c0 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000497712810.0130286
0x64203359dfb80d2c02f7c1562e46bf708a6eff8b35435aff50f8c988e18787e4Approve1128358482023-11-29 15:07:5388 days 10 hrs ago0xf5d9cd9bc51a0a59598a5bcd8eb6440002be3e64 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000881480.016046322
0x1d56477153b0779065acb95b704a3af91972d859397168e670487447a7380599Approve1128251272023-11-29 9:10:3188 days 16 hrs ago0x45821aaa1d5923eb66363f82b9f37e2fef758433 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000503279330.0094326
0x608a0acdc37149e4162c952e6fb9141ddfcd95b4835bf8a601f0fa91416718b1Approve1128250352023-11-29 9:07:2788 days 16 hrs ago0x45821aaa1d5923eb66363f82b9f37e2fef758433 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000515281520.0097179
0x69fb33f55c4a9bfdd2f13d0722a006045703c157cb646ec00ddce27134104cdaApprove1125656502023-11-23 9:01:1794 days 17 hrs ago0x6456e4be31ead7d3da918757fe54b49ee23f2739 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000489818640.010186171
0xe9fbdade25d47ee53865052bfcfbd867c655440a8629393317fc7c9274077ea1Approve1125656412023-11-23 9:00:5994 days 17 hrs ago0x6456e4be31ead7d3da918757fe54b49ee23f2739 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.000044711770.010380829
0x3afc2d6a7b21ccc101210b086b89de8217a182f94922c1025ae42ba2a30a2152Approve1125656162023-11-23 9:00:0994 days 17 hrs ago0x6456e4be31ead7d3da918757fe54b49ee23f2739 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000419959530.009210851
0x92fe41a73e2a7952549f56a8346c6b66e212cc2f9b6781274ff570db92ccbea3Approve1125496722023-11-23 0:08:4195 days 1 hr ago0xb760c246db7eee48169c729d0394a7773be6a376 IN  0x985612ff2c9409174fedcff23d4f4761af124f880 ETH0.0000565250890.004738094
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Latest 25 internal transaction
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0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x985612ff2c9409174fedcff23d4f4761af124f880 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x985612ff2c9409174fedcff23d4f4761af124f880 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x985612ff2c9409174fedcff23d4f4761af124f880 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x29062d803d8586fde18d37b4a5fa1bbf1b207c35 0x985612ff2c9409174fedcff23d4f4761af124f880 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x985612ff2c9409174fedcff23d4f4761af124f880 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Velodrome Finance: Pair Factory0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 Rocket Pool ETH: rETH Token0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88Wrapped Ether0 ETH
0x856053b5ca080e1c637538094cf387fc2167f6b9b8fffa27b010dc5bd8697a991075549162023-07-30 9:16:49210 days 16 hrs ago 0x985612ff2c9409174fedcff23d4f4761af124f88 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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