Contract 0x5757371414417b8C6CAad45bAeF941aBc7d3Ab32 3

 
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xebf26cd29d809a88e06ecfdfb08dbc22ca315c92253e1a90cb8512eed0d8df58Create Pair360834072022-11-26 8:21:032 days 13 hrs ago0x769a584853d3edffc6d74e46698523376eb9040d IN  QuickSwap: Factory0 MATIC0.07518858008 30.000000032
0xcb5a98b3e7d22a8cfc9c3ebf5db782bc4184b6c384929a091abd2cbd447a646bTransfer360085762022-11-24 12:59:174 days 9 hrs ago0x49433697ffcbc7a5e96461d0e57ee7b200aea9e9 IN  QuickSwap: Factory3 MATIC0.003009144759 143.292607609
0xfed22b4e50034b102aa39d3502dcb9574f52ccd727306880206b7722cb66e736Set Fee To353977712022-11-09 13:43:2119 days 8 hrs ago0x2ee05fad3b206a232e985acbda949b215c67f00e IN  QuickSwap: Factory0 MATIC0.003909253089 135.455755008
0xc05e6914336de422c06cd40b5f023aa67513cc747ef5dfe91be0cdbc5380c631Set Fee To353977202022-11-09 13:41:3519 days 8 hrs ago0x2ee05fad3b206a232e985acbda949b215c67f00e IN  QuickSwap: Factory0 MATIC0.002707041365 93.799077108
0xdaf471a4ee41ed250072d278133994c7155fe577779cdc42c596b1f6e0d4698bSet Fee To353973402022-11-09 13:28:3119 days 8 hrs ago0x2ee05fad3b206a232e985acbda949b215c67f00e IN  QuickSwap: Factory0 MATIC0.002903078018 100.591753926
0x489050f4102a0cddf9fd6c2a51a9a55b16520c4a9f800b63370b48a7ecde6171Create Pair353913932022-11-09 10:01:4619 days 12 hrs ago0xfebcdbd511ba46b7b3a24086633ff7f005b23442 IN  QuickSwap: Factory0 MATIC1.071681652947427.59751
0x377f8fcf10c434a194944173e0a715c17914a63cecaf0fc3440f912dd0906be3Set Fee To347085312022-10-23 17:22:0436 days 4 hrs ago0x2ee05fad3b206a232e985acbda949b215c67f00e IN  QuickSwap: Factory0 MATIC0.002305536253 79.886911055
0x68f0b0b9c26b5f5a2e95ff1ca3643355e11c1aafa18a0afe49c9c82341fa68e4Create Pair343578032022-10-15 2:30:2544 days 19 hrs ago0x9f86c2105849f8af776f841e312f20122c05f40f IN  QuickSwap: Factory0 MATIC0.401637894489 160.252219615
0x80adf8cdada2d6ddfa513f925753bfb0d1c9f430c603f8cbe8f548be2a84cc90Create Pair343197802022-10-14 4:23:0245 days 17 hrs ago0x9f86c2105849f8af776f841e312f20122c05f40f IN  QuickSwap: Factory0 MATIC0.157706328062 62.924565396
0x1c5f86bb68a7d4e7d034223dd8ea8162f35fa9d6fed79ed86d929d5a573cceb6Create Pair342548512022-10-12 14:42:4047 days 7 hrs ago0x9f86c2105849f8af776f841e312f20122c05f40f IN  QuickSwap: Factory0 MATIC0.076632986667 30.576435583
0xccb020080a1af432c2e3bb81547e511c2e6505d8a0f68c7d702711cccd98f447Create Pair336675702022-09-28 10:22:4361 days 11 hrs ago0xbc124a2df7f1f4e0566c16f72012acae6f23245e IN  QuickSwap: Factory0 MATIC0.095792966696 38.221419091
0xe637796250a0af41cb56726ffffddb841d2a90246fe8dd626d56fcadb0569454Transfer334276052022-09-22 14:10:0467 days 7 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.002683714132 127.795911073
0xd0f9da3c5a89ee0cbac63bd117eb637ce69b3c754992e1086352aea27915c023Transfer334275732022-09-22 14:08:5667 days 7 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000824503563 39.262074451
0x5040e1724e9cc9b5a9786a677752704df4ccbcccaa4d9b247c810a05118148c6Transfer334271832022-09-22 13:55:3267 days 8 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00078457396 37.360664774
0xd75dcd8e0644b49a4f1acf6be429a06adca4ab483ce64d997476b43d7d38a2c1Transfer334271292022-09-22 13:53:4067 days 8 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00088318745 42.056545271
0x4f35da9a04118c08f687862e5dc292ccdb1422e760cb6d9170db04a43ef5345dTransfer334268692022-09-22 13:44:4467 days 8 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00125254893 59.645187143
0xed32842bc951ad54b10a33d39350db6ac91e777980d6f19369211f7cb0c149c9Transfer334237622022-09-22 11:57:5367 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000845153173 40.245389199
0x9c6cf028cecccb434106397404eca36bc3810b6aba2d01543dfb9a51324022bcTransfer334227232022-09-22 11:22:1067 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000961307829 45.77656329
0xcf24dc09479f5c554a7a87f88c57ef5b9184119b7127624e7b3bf22949438444Transfer334226562022-09-22 11:19:5267 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000828394785 39.447370742
0xdb5ab9fe46282393b296dd9c4c8a167ed680610b472d16cbc144b709206d408eTransfer334225942022-09-22 11:17:4467 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000965331018 45.968143716
0x50bd2f7ce4102314b8232493417cad7f8dc65744a7bd9f2bf62c311f2c782d61Transfer334225482022-09-22 11:16:0867 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.0008715 41.50000001
0x1d7bfa2c592cb26555bd97c8b151249b3f21e1c291988e17d0e6a54925a4a939Transfer334223772022-09-22 11:10:1467 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000904910225 43.090963119
0x5c5b6f9c41d41d891f3fcc099e9cae3f81f35609f03449cde00e60d4acf79c33Transfer334223272022-09-22 11:08:3067 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00091688551 43.661214808
0xed73a7e6bbbace05fd1f8200cce727076110789b7c0ed42e3a9ffeba82cccd54Transfer334223022022-09-22 11:07:4067 days 10 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000894171117 42.579577006
0x56795efe690d2d7c7c225279511b41e050fc58d53dcf24885686ca081b7b0ad7Transfer334211782022-09-22 10:28:5767 days 11 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000830110868 39.529088994
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OVERVIEW

QuickSwap is a permissionless decentralized exchange (DEX) based on Ethereum, powered by Polygon Network’s Layer 2 scalability infrastructure.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x10553830381c8f910b34c10b69de3ea2281674c592d4344881fb734d3a80912e361861192022-11-28 20:31:341 hr 35 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x9dba4b437c6693cecf629355a1cbe98a0c58471e7c5acb7a5acf8b462320a767361823262022-11-28 18:20:373 hrs 46 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xb3596aba5f3d0e02b3a642822155a44a7d6c5819e926ecf59269c59f5cc2b9b1361789722022-11-28 16:25:125 hrs 41 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xa5386965b5a3b2751c3df52d948855d208c01496d9046af59632acd781700378361748422022-11-28 13:56:488 hrs 10 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xa9c0c254e869e220733e26a7ba9ab805b3193d401269ac6f89b0ea0b192070b3361740332022-11-28 13:29:028 hrs 38 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x181700be6919ae00dadec9602775e5ef5d6bf3c1c7a10edccda6a015ce1b2f8c361728212022-11-28 12:45:129 hrs 21 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x28add7a644daf7f98fff6720309e47185236be55cdabc60d4cbe99d0bc371d90361725582022-11-28 12:36:109 hrs 30 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x991aa5165b42bc6609ca02d6e04ad1bedad063e51ddcd864f11efd86b7cf4ead361717762022-11-28 12:09:189 hrs 57 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xbbbf59c94e8e385b9cc69ba201854334af8c81e00e06720e52aa8f910524328a361715812022-11-28 12:02:3210 hrs 4 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xbc04ad5d32625fe8ffedbdc414d121382b7cb088936445bd0b288647d87ec999361713702022-11-28 11:55:1810 hrs 11 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x1fd509d96bcc73753b43e3945073621a215b064aae2a5e8f5ed82eed84627c52361713072022-11-28 11:53:0810 hrs 14 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xb2eb3efca96781eec5e0a04f083ca9a20f00a17369b9d9bcd1f8a15f9becfd19361703652022-11-28 11:15:3110 hrs 51 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xf3926c264afcd97f6f26db10fd055a36325ea2c2854d8ba142f2bc2a2fea2567361695742022-11-28 10:48:2011 hrs 18 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x3a3daced99c10e0bec7cfe1ce81d823271d7d986770ffdb3135e292ac0c78707361693452022-11-28 10:40:3011 hrs 26 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x94cc1621a38b2162454cb3d712a7473a66cee39fa9cf568bb169ff1c543e9593361686672022-11-28 10:17:0711 hrs 50 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x8361fb334fc7b2b32f8d4e5b753b38893766497ca73e7ca9fc299cbed62a02c7361669142022-11-28 9:16:5112 hrs 50 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xac2803bf2cd46f95b76419039322599b65ea0965f5597101747ad678f3ab7335361664252022-11-28 9:00:0113 hrs 7 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x7a0dc5ccf98adaabf42a88d05e16d6edd1f3de8278340f24518b72776d284c60361617932022-11-28 6:18:3215 hrs 48 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xc956a7bba237bad65b9e3faa9a5e33c1fafee98fa29938060edbe606f9cbe788361608272022-11-28 5:45:0816 hrs 22 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x75de700f398a1d2297579288fb683873613d5c8a6506d03f886873c3290abed5361597112022-11-28 5:06:4817 hrs ago QuickSwap: Factory  Contract Creation0 MATIC
0x7b62e41fe331b266d8a9acadec01598d6b9f3afa26df6818ab1d9d2456a5bc61361593752022-11-28 4:55:1617 hrs 11 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x1c778df89f30434db102e4a75351be08ee0aa56e07735150e20d4f0c16ab0bdf361592842022-11-28 4:52:0617 hrs 15 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x9f406537cd90981a5ed6882d06cf81b17c5ca4963a01c64d293fa332200f992d361590222022-11-28 4:43:0617 hrs 24 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x81298c278f1199f17342967d7c5da21648c9b288e3f47a19348ae0fa110e848e361522972022-11-28 0:49:2421 hrs 17 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x56a04f868312c1e74f75cf5951dac70f5708400ca6ab3ed51224c6354db56360361507122022-11-27 23:54:4722 hrs 12 mins ago QuickSwap: Factory  Contract Creation0 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
UniswapV2Factory

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 999999 runs

Other Settings:
default evmVersion, GNU GPLv3 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-05-18
*/

// File: contracts/interfaces/IUniswapV2Factory.sol

pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: contracts/interfaces/IUniswapV2Pair.sol

pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    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(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// File: contracts/interfaces/IUniswapV2ERC20.sol

pragma solidity >=0.5.0;

interface IUniswapV2ERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}

// File: contracts/libraries/SafeMath.sol

pragma solidity =0.5.16;

// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)

library SafeMath {
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x, 'ds-math-add-overflow');
    }

    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, 'ds-math-sub-underflow');
    }

    function mul(uint x, uint y) internal pure returns (uint z) {
        require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
    }
}

// File: contracts/UniswapV2ERC20.sol

pragma solidity =0.5.16;



contract UniswapV2ERC20 is IUniswapV2ERC20 {
    using SafeMath for uint;

    string public constant name = 'Uniswap V2';
    string public constant symbol = 'UNI-V2';
    uint8 public constant decimals = 18;
    uint  public totalSupply;
    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

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

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

    constructor() public {
        uint chainId;
        assembly {
            chainId := chainid
        }
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes(name)),
                keccak256(bytes('1')),
                chainId,
                address(this)
            )
        );
    }

    function _mint(address to, uint value) internal {
        totalSupply = totalSupply.add(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint value) internal {
        balanceOf[from] = balanceOf[from].sub(value);
        totalSupply = totalSupply.sub(value);
        emit Transfer(from, address(0), value);
    }

    function _approve(address owner, address spender, uint value) private {
        allowance[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    function _transfer(address from, address to, uint value) private {
        balanceOf[from] = balanceOf[from].sub(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(from, to, value);
    }

    function approve(address spender, uint value) external returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transfer(address to, uint value) external returns (bool) {
        _transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(address from, address to, uint value) external returns (bool) {
        if (allowance[from][msg.sender] != uint(-1)) {
            allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
        }
        _transfer(from, to, value);
        return true;
    }

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
        require(deadline >= block.timestamp, 'UniswapV2: EXPIRED');
        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, 'UniswapV2: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }
}

// File: contracts/libraries/Math.sol

pragma solidity =0.5.16;

// a library for performing various math operations

library Math {
    function min(uint x, uint y) internal pure returns (uint z) {
        z = x < y ? x : y;
    }

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    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;
        }
    }
}

// File: contracts/libraries/UQ112x112.sol

pragma solidity =0.5.16;

// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))

// range: [0, 2**112 - 1]
// resolution: 1 / 2**112

library UQ112x112 {
    uint224 constant Q112 = 2**112;

    // encode a uint112 as a UQ112x112
    function encode(uint112 y) internal pure returns (uint224 z) {
        z = uint224(y) * Q112; // never overflows
    }

    // divide a UQ112x112 by a uint112, returning a UQ112x112
    function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
        z = x / uint224(y);
    }
}

// File: contracts/interfaces/IERC20.sol

pragma solidity >=0.5.0;

interface IERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);
}

// File: contracts/interfaces/IUniswapV2Callee.sol

pragma solidity >=0.5.0;

interface IUniswapV2Callee {
    function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

// File: contracts/UniswapV2Pair.sol

pragma solidity =0.5.16;








contract UniswapV2Pair is IUniswapV2Pair, UniswapV2ERC20 {
    using SafeMath  for uint;
    using UQ112x112 for uint224;

    uint public constant MINIMUM_LIQUIDITY = 10**3;
    bytes4 private constant SELECTOR = bytes4(keccak256(bytes('transfer(address,uint256)')));

    address public factory;
    address public token0;
    address public token1;

    uint112 private reserve0;           // uses single storage slot, accessible via getReserves
    uint112 private reserve1;           // uses single storage slot, accessible via getReserves
    uint32  private blockTimestampLast; // uses single storage slot, accessible via getReserves

    uint public price0CumulativeLast;
    uint public price1CumulativeLast;
    uint public kLast; // reserve0 * reserve1, as of immediately after the most recent liquidity event

    uint private unlocked = 1;
    modifier lock() {
        require(unlocked == 1, 'UniswapV2: LOCKED');
        unlocked = 0;
        _;
        unlocked = 1;
    }

    function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) {
        _reserve0 = reserve0;
        _reserve1 = reserve1;
        _blockTimestampLast = blockTimestampLast;
    }

    function _safeTransfer(address token, address to, uint value) private {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'UniswapV2: TRANSFER_FAILED');
    }

    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(uint112 reserve0, uint112 reserve1);

    constructor() public {
        factory = msg.sender;
    }

    // called once by the factory at time of deployment
    function initialize(address _token0, address _token1) external {
        require(msg.sender == factory, 'UniswapV2: FORBIDDEN'); // sufficient check
        token0 = _token0;
        token1 = _token1;
    }

    // update reserves and, on the first call per block, price accumulators
    function _update(uint balance0, uint balance1, uint112 _reserve0, uint112 _reserve1) private {
        require(balance0 <= uint112(-1) && balance1 <= uint112(-1), 'UniswapV2: OVERFLOW');
        uint32 blockTimestamp = uint32(block.timestamp % 2**32);
        uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
        if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
            // * never overflows, and + overflow is desired
            price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
            price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
        }
        reserve0 = uint112(balance0);
        reserve1 = uint112(balance1);
        blockTimestampLast = blockTimestamp;
        emit Sync(reserve0, reserve1);
    }

    // if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
    function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
        address feeTo = IUniswapV2Factory(factory).feeTo();
        feeOn = feeTo != address(0);
        uint _kLast = kLast; // gas savings
        if (feeOn) {
            if (_kLast != 0) {
                uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
                uint rootKLast = Math.sqrt(_kLast);
                if (rootK > rootKLast) {
                    uint numerator = totalSupply.mul(rootK.sub(rootKLast));
                    uint denominator = rootK.mul(5).add(rootKLast);
                    uint liquidity = numerator / denominator;
                    if (liquidity > 0) _mint(feeTo, liquidity);
                }
            }
        } else if (_kLast != 0) {
            kLast = 0;
        }
    }

    // this low-level function should be called from a contract which performs important safety checks
    function mint(address to) external lock returns (uint liquidity) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        uint balance0 = IERC20(token0).balanceOf(address(this));
        uint balance1 = IERC20(token1).balanceOf(address(this));
        uint amount0 = balance0.sub(_reserve0);
        uint amount1 = balance1.sub(_reserve1);

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        if (_totalSupply == 0) {
            liquidity = Math.sqrt(amount0.mul(amount1)).sub(MINIMUM_LIQUIDITY);
           _mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
        } else {
            liquidity = Math.min(amount0.mul(_totalSupply) / _reserve0, amount1.mul(_totalSupply) / _reserve1);
        }
        require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
        _mint(to, liquidity);

        _update(balance0, balance1, _reserve0, _reserve1);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Mint(msg.sender, amount0, amount1);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function burn(address to) external lock returns (uint amount0, uint amount1) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        address _token0 = token0;                                // gas savings
        address _token1 = token1;                                // gas savings
        uint balance0 = IERC20(_token0).balanceOf(address(this));
        uint balance1 = IERC20(_token1).balanceOf(address(this));
        uint liquidity = balanceOf[address(this)];

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        amount0 = liquidity.mul(balance0) / _totalSupply; // using balances ensures pro-rata distribution
        amount1 = liquidity.mul(balance1) / _totalSupply; // using balances ensures pro-rata distribution
        require(amount0 > 0 && amount1 > 0, 'UniswapV2: 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);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        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(amount0Out > 0 || amount1Out > 0, 'UniswapV2: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'UniswapV2: INSUFFICIENT_LIQUIDITY');

        uint balance0;
        uint balance1;
        { // scope for _token{0,1}, avoids stack too deep errors
        address _token0 = token0;
        address _token1 = token1;
        require(to != _token0 && to != _token1, 'UniswapV2: 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) IUniswapV2Callee(to).uniswapV2Call(msg.sender, amount0Out, amount1Out, data);
        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, 'UniswapV2: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(3));
        uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(3));
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'UniswapV2: 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 = token0; // gas savings
        address _token1 = token1; // gas savings
        _safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)).sub(reserve0));
        _safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)).sub(reserve1));
    }

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

// File: contracts/UniswapV2Factory.sol

pragma solidity =0.5.16;



contract UniswapV2Factory is IUniswapV2Factory {
    address public feeTo;
    address public feeToSetter;

    mapping(address => mapping(address => address)) public getPair;
    address[] public allPairs;

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

    constructor(address _feeToSetter) public {
        feeToSetter = _feeToSetter;
    }

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

    function createPair(address tokenA, address tokenB) external returns (address pair) {
        require(tokenA != tokenB, 'UniswapV2: IDENTICAL_ADDRESSES');
        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'UniswapV2: ZERO_ADDRESS');
        require(getPair[token0][token1] == address(0), 'UniswapV2: PAIR_EXISTS'); // single check is sufficient
        bytes memory bytecode = type(UniswapV2Pair).creationCode;
        bytes32 salt = keccak256(abi.encodePacked(token0, token1));
        assembly {
            pair := create2(0, add(bytecode, 32), mload(bytecode), salt)
        }
        IUniswapV2Pair(pair).initialize(token0, token1);
        getPair[token0][token1] = pair;
        getPair[token1][token0] = pair; // populate mapping in the reverse direction
        allPairs.push(pair);
        emit PairCreated(token0, token1, pair, allPairs.length);
    }

    function setFeeTo(address _feeTo) external {
        require(msg.sender == feeToSetter, 'UniswapV2: FORBIDDEN');
        feeTo = _feeTo;
    }

    function setFeeToSetter(address _feeToSetter) external {
        require(msg.sender == feeToSetter, 'UniswapV2: FORBIDDEN');
        feeToSetter = _feeToSetter;
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_feeToSetter","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token0","type":"address"},{"indexed":true,"internalType":"address","name":"token1","type":"address"},{"indexed":false,"internalType":"address","name":"pair","type":"address"},{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"PairCreated","type":"event"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allPairs","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"allPairsLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"createPair","outputs":[{"internalType":"address","name":"pair","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"feeTo","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"feeToSetter","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"getPair","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_feeTo","type":"address"}],"name":"setFeeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_feeToSetter","type":"address"}],"name":"setFeeToSetter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000476307dac3fd170166e007fcaa14f0a129721463

-----Decoded View---------------
Arg [0] : _feeToSetter (address): 0x476307dac3fd170166e007fcaa14f0a129721463

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000476307dac3fd170166e007fcaa14f0a129721463


Deployed ByteCode Sourcemap

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Swarm Source

bzzr://2760f92d7fa1db6f5aa16307bad65df4ebcc8550c4b1f03755ab8dfd830c178f
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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