Contract 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 11

 
Txn Hash Method
Block
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Value
0x861cda116e95441f568653dca1ce4956e695e29eccfe5de38ce1de4423252e9fApprove1162240782024-02-16 1:28:539 days 22 hrs ago0x60980686da35c3f08ddad5bfc3fc92c884ba3de6 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000405507480.004078109
0x4e0972912e974f78d710872e4a2ef821f68d6a001bc25566490897c3ce55f1ecApprove1161998032024-02-15 11:59:4310 days 12 hrs ago0xd123741a601e1ddb7ac43e78834f3fb1740034c9 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000439777980.006170496
0xe5c9af758a15e4e3b7a911b626735a986eab86fc6b8ce3caeb267bd9369f9b99Approve1135724102023-12-16 16:19:5771 days 8 hrs ago0xa33ca84383bac2efb11b8ce21bc10403ff9cc77a IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0001288144120.0056573
0xfe594b481f87fe3881dc214435f7a57397358456bae4c71874aad8e5615fa2caApprove1135723712023-12-16 16:18:3971 days 8 hrs ago0xa33ca84383bac2efb11b8ce21bc10403ff9cc77a IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0001308057640.0056573
0x6b4181b4ade9c046906f44588a66cfae62443ad8b284ba039b813e99710aedd0Approve1128237512023-11-29 8:24:3988 days 15 hrs ago0xcd22a3962a067472b335cf2564365c3034bc975b IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000498874730.009560776
0xcefdfb0c1a75aa0c81939f3dc763ad64b62867410477d952263b99c3696fb3f1Approve1123532672023-11-18 11:01:5199 days 13 hrs ago0xe77428ce19ad1ad1c7f85fe86119793520b48e81 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000317148320.0092716
0xc4fc6a7b9497efe25a295ccc7b9edc5d0ab313d6eda676a00b21ee59afe43955Approve1116169482023-11-01 9:57:53116 days 14 hrs ago0xa087900621e2b6cd659a7c26c695e60e69cdde75 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000270217370.010492914
0x7a38714f8a38d8e70b1818be68e8f4c69536db7d8155ff2fa814e7231850603dApprove1085867582023-08-23 6:31:33186 days 17 hrs ago0x31b84b632e43e5ddb2abbab6c43922e01b30cf54 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000240564160.00000681
0x824982554ddcdad6c722e2216a79d628bf6fda6bc1259a03845a010d08de0c23Approve1085867572023-08-23 6:31:31186 days 17 hrs ago0x31b84b632e43e5ddb2abbab6c43922e01b30cf54 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000215574010.000006803
0xc1c9e4f6372f909bb2d1fd8bae4a8a41ee523d5ab3ec5a32589575bdab08c5a4Approve1072961322023-07-24 9:30:41216 days 14 hrs ago0xd3c77d4f2c259d5cfd959d45c8592df4260f58db IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000400185730.000067636
0xa73c8263f7ddb4496c96586fabaa2c2aa4713126ebdc0c1089d6d50fdec1dfacApprove1068678392023-07-14 11:34:15226 days 12 hrs ago0xe07e487d5a5e1098bbb4d259dac5ef83ae273f4e IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000276817770.005455175
0xa4d4fab61ffbacef36fe2280b591bc58e23df719801cea2d75eba816c400ae4cClaim Fees1068678292023-07-14 11:33:55226 days 12 hrs ago0xe07e487d5a5e1098bbb4d259dac5ef83ae273f4e IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000215687410.005469708
0x2d4571920b0140c2ff7a1ab1b338ab6d7b414d1492ee27f43359ffcc34a090e8Approve1062263252023-06-29 15:10:27241 days 9 hrs ago0x51b0eab5e7aef09d268d20d2c2c0c147220d6535 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000856235330.000859132
0xdf2e1e4fd342627d88ef456cf4ea2f9ca1089ffe256260eee3186ac824ea5208Approve1062263162023-06-29 15:10:09241 days 9 hrs ago0x51b0eab5e7aef09d268d20d2c2c0c147220d6535 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000856229350.000834477
0x54fd3792aaec1b3e04bf8bd66857eb363d5ab7a186b255455e11ee6a2678033cApprove1061568242023-06-28 0:33:45242 days 23 hrs ago0x89edc11116ca95170fdfe2669f66dbb287dccf7a IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000229182530.000016657
0x64265d1e375ade047f877b230da086238c6ba84928f0943662da447bbfba8061Claim Fees1061567992023-06-28 0:32:55242 days 23 hrs ago0x89edc11116ca95170fdfe2669f66dbb287dccf7a IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000182842330.001939965
0x0f6145ee2c2b8486f9dcdc006c1b383440ce07157eccf683ab1527b371ef7183Approve943559642023-04-26 8:39:00305 days 15 hrs ago0xfa3340c89539b704661c62f56afdb661418aefd3 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0001521709690.001
0xebd6b4b48eb16e16ff2ce96b78583005a33b14aed71c4ae8949d63266896df72Approve918853752023-04-18 10:52:53313 days 13 hrs ago0xfa3340c89539b704661c62f56afdb661418aefd3 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.000173768850.001
0x2bbc78d44b0fbddcce89332d519496d6f8039bbb28f5848d12e532219989d068Approve871463262023-04-07 5:20:08324 days 19 hrs ago0x3110c828a7fe9db8f919abd45b7637807b750135 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000836385030.001
0x59bb9a7e159a6fec88f07aa1aa985bdfc4b6fda55b1d8836441d69787f3949c7Approve838039562023-03-26 11:15:01336 days 13 hrs ago0xd3c77d4f2c259d5cfd959d45c8592df4260f58db IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000812421730.001
0x7e55b32f3379c88a18adc1755e489a2959ed76af86c64566db6cbb19fb07aa2cApprove820560932023-03-19 3:42:34343 days 20 hrs ago0x1e58038aa99e082a41d6b09e0ae38614f1ce8dd9 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000629262190.001
0xd06bd3d335ee8fbde2357cbb3572c2f883faa3bec71fdbae01c90ac35d57de21Approve820557412023-03-19 3:39:47343 days 20 hrs ago0x1e58038aa99e082a41d6b09e0ae38614f1ce8dd9 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000632482190.001
0x2daf7460b11143f711643f369094a936919519aba4949a203d4d564a3a158a81Approve813145452023-03-16 6:59:15346 days 17 hrs ago0x5ecfabeea7500ef0bfdadfb211d5c4bb87c7e876 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000845857660.001
0x7ec1fe371bcdd7735fddd00a274e1867f9ee3f5ffd1bcf3e0d15793633bdcaf9Approve813138052023-03-16 6:56:15346 days 17 hrs ago0xdbf4915c6ac10da0162f2f6b0a5ad080f94d9676 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000845857660.001
0x9a064490c0485daf38579f5ec8eeed1de634e6d330857ca4f58c5a43a6766053Approve810218642023-03-15 8:02:13347 days 16 hrs ago0x5ecfabeea7500ef0bfdadfb211d5c4bb87c7e876 IN  0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH0.0000978841670.001024961
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0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0xb9fec82b2e852d218ae77a645601d2e9a1d7a30f1755484f59461cd2cb1071f21075533762023-07-30 8:25:29210 days 15 hrs ago 0xed4da4d3b90cb359d0216c0016ac6d9241d817c3 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Synthetix: sUSD Token0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Wrapped Ether0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Synthetix: sUSD Token0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Synthetix: sUSD Token0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Wrapped Ether0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04Wrapped Ether0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0xa132dab612db5cb9fc9ac426a0cc215a3423f9c9 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0x58f98be02c4ffb675af8857013a9c0dfa5750d04 Velodrome Finance: Pair Factory0 ETH
0x075f633a38b9029273c5065f55a6f6d10c9fb9122642bdd8e54e944487fef2de1075469182023-07-30 4:50:13210 days 19 hrs ago 0xa132dab612db5cb9fc9ac426a0cc215a3423f9c9 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x2f670a071702ba7e73ac7522f9dd36e0d3cf938214979469056f46e7adb15bd91075468972023-07-30 4:49:31210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 ETH
0x64c12bc68b55c12f4556cf93b6cc6dff2bf4f68b4652615d36ec3e9fc1a1542d1075468922023-07-30 4:49:21210 days 19 hrs ago Velodrome Finance: Prices Oracle V2 0x58f98be02c4ffb675af8857013a9c0dfa5750d040 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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