Contract 0x5757371414417b8c6caad45baef941abc7d3ab32 3

 
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xe637796250a0af41cb56726ffffddb841d2a90246fe8dd626d56fcadb0569454Transfer334276052022-09-22 14:10:042 days 1 hr ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.002683714132 127.795911073
0xd0f9da3c5a89ee0cbac63bd117eb637ce69b3c754992e1086352aea27915c023Transfer334275732022-09-22 14:08:562 days 1 hr ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000824503563 39.262074451
0x5040e1724e9cc9b5a9786a677752704df4ccbcccaa4d9b247c810a05118148c6Transfer334271832022-09-22 13:55:322 days 1 hr ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00078457396 37.360664774
0xd75dcd8e0644b49a4f1acf6be429a06adca4ab483ce64d997476b43d7d38a2c1Transfer334271292022-09-22 13:53:402 days 1 hr ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00088318745 42.056545271
0x4f35da9a04118c08f687862e5dc292ccdb1422e760cb6d9170db04a43ef5345dTransfer334268692022-09-22 13:44:442 days 2 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00125254893 59.645187143
0xed32842bc951ad54b10a33d39350db6ac91e777980d6f19369211f7cb0c149c9Transfer334237622022-09-22 11:57:532 days 3 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000845153173 40.245389199
0x9c6cf028cecccb434106397404eca36bc3810b6aba2d01543dfb9a51324022bcTransfer334227232022-09-22 11:22:102 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000961307829 45.77656329
0xcf24dc09479f5c554a7a87f88c57ef5b9184119b7127624e7b3bf22949438444Transfer334226562022-09-22 11:19:522 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000828394785 39.447370742
0xdb5ab9fe46282393b296dd9c4c8a167ed680610b472d16cbc144b709206d408eTransfer334225942022-09-22 11:17:442 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000965331018 45.968143716
0x50bd2f7ce4102314b8232493417cad7f8dc65744a7bd9f2bf62c311f2c782d61Transfer334225482022-09-22 11:16:082 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.0008715 41.50000001
0x1d7bfa2c592cb26555bd97c8b151249b3f21e1c291988e17d0e6a54925a4a939Transfer334223772022-09-22 11:10:142 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000904910225 43.090963119
0x5c5b6f9c41d41d891f3fcc099e9cae3f81f35609f03449cde00e60d4acf79c33Transfer334223272022-09-22 11:08:302 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00091688551 43.661214808
0xed73a7e6bbbace05fd1f8200cce727076110789b7c0ed42e3a9ffeba82cccd54Transfer334223022022-09-22 11:07:402 days 4 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000894171117 42.579577006
0x56795efe690d2d7c7c225279511b41e050fc58d53dcf24885686ca081b7b0ad7Transfer334211782022-09-22 10:28:572 days 5 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000830110868 39.529088994
0xc85187940b7d0ff26334ebaae18cdd19f8e810b7417b15d3db7b8e0c6f7066adTransfer334206802022-09-22 10:11:522 days 5 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.00089519853 42.62850143
0x8035c4107ad3f0bb5bc6527f495d2933db22ab91887786473f65660a827d8da8Transfer334206332022-09-22 10:10:142 days 5 hrs ago0xbdcdcb8dbb39e0a43ae19ff78aaadd76fa6ee572 IN  QuickSwap: Factory0 MATIC0.000883768343 42.084206834
0x16b1eef4bc12ea36c3b13c88624b2d19d80d1bd8688b65d53f9ee70a51c9bc1cCreate Pair331919292022-09-16 20:40:467 days 19 hrs ago0xe07bb478def57f3776a92d8c085c0a4e36b37181 IN  QuickSwap: Factory0 MATIC0.07769455599730.999999999
0x9cf3b43fbcd95848bf6ec00e6d5f3574140c99728a748924b72fbae115ed34d2Create Pair331736742022-09-16 9:59:518 days 5 hrs ago0x63c58f4ec7db428ef09d1467e8a449f485201026 IN  QuickSwap: Factory0 MATIC0.10025104 40
0xdab90f82b7e28bd91d24742e3fbe7bcc27645264d528546fddfe662aefd6e0e6Create Pair331207912022-09-15 3:29:589 days 12 hrs ago0x306719d72996c06ff332d32658b775ace0a8f0df IN  QuickSwap: Factory0 MATIC0.109626930064 43.740790183
0x3f2e718ce81c8b1bbbe5cb4d0287fe9bc7ef91116d2295266265ae116b8955cbCreate Pair327600672022-09-06 10:43:2018 days 5 hrs ago0xc494bdc2f0fbf4567cff383293eeede1934832e7 IN  QuickSwap: Factory0 MATIC0.07518858003 30.000000012
0xc8f0c190a7150f3b7807b7f60a15bed80973d4b8d5d4be43859bb9dd5bffbc29Create Pair326275912022-09-03 6:13:4721 days 9 hrs ago0x47a2a7c7aad23134ec938c6c2a0ae68e0eb98c34 IN  QuickSwap: Factory0 MATIC0.07518792003230.000000013
0xe1d6ba328adce778bd189bb0d73840610a981b23d1a367d50c465fe52ffc2850Create Pair326275852022-09-03 6:13:3521 days 9 hrs ago0x47a2a7c7aad23134ec938c6c2a0ae68e0eb98c34 IN  QuickSwap: Factory0 MATIC0.07518828003230.000000013
0x29fc01bb7e20ebb698fe0b60815b303d1902798d270b85ef1b577dc8128cb1c3Create Pair325124602022-08-31 9:01:0024 days 6 hrs ago0x487b1732d8937d20132cc9f5cd455760134e355b IN  QuickSwap: Factory0 MATIC0.518965314194 207.066306422
0xc5d08f6d0ed1107c481c58119366f05903be3191499aed8ae74ea238b98a8c37Create Pair322689272022-08-24 13:30:4831 days 2 hrs ago0xc8fccbac1a696dd329edfc941e4f453638729c1a IN  QuickSwap: Factory0 MATIC0.082707445067 33.00000282
0xc60337e0a674d42e120ca115d4d535ccd2363a5131d84aad07f94494e30b9eefCreate Pair322689022022-08-24 13:29:0831 days 2 hrs ago0xc8fccbac1a696dd329edfc941e4f453638729c1a IN  QuickSwap: Factory0 MATIC0.123985473925 49.470000082
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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
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0xbb80ff485c3140979d6870bc8432a7023b5d988ba06e0391091c82ee5b159557335124912022-09-24 15:34:4814 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x6873d08a015db9b5d26ab145d206881677c5577d919a6031f660f6663d67748a335118892022-09-24 15:14:0834 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xaea17201cfbb4188348d818c671e1de64d9a551883176e7906428438dc6c2778335100172022-09-24 14:07:351 hr 41 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xbe38f6f5241a75c5874c05a66339b6fa61a65d95c990fbb184b0b01b427ffdee335090632022-09-24 13:34:472 hrs 14 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x0738671da2b3406c6698340605aa4862ea3c22489c35faf09f8da9f1777eeac9335089062022-09-24 13:29:212 hrs 19 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x2232c3d60d6a4a3f37251606ae19b5d0cd661d9a674827879d6220bf2e943182335084062022-09-24 13:12:092 hrs 36 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x0b89394117bb0946ad4a784dddfede76552939851c901b54f076971017fc25f6335059932022-09-24 11:47:034 hrs 1 min ago QuickSwap: Factory  Contract Creation0 MATIC
0x3132fb15324a1414f0827478bdc4f6ec9072ddbf913fdef7bcd7939499e4b7b2335058372022-09-24 11:41:394 hrs 7 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xe005331e20ba9f5d1098e8c3adde6260206a1539eb8f9ce7014deb38417612d2335052412022-09-24 11:21:104 hrs 27 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x6e147ce9fcb6b2d203f9af6edc915efc51752e3d8709ae791a8e711664ef75d5335049412022-09-24 11:10:144 hrs 38 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xef31f6c2078d7001aca1f9d8a3ed144df17e4f44e40d1e706b44ab5fa4a0ef59335023562022-09-24 9:37:436 hrs 11 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xf0baeb9e50fbc10674738f68595a421841567ca76decb0fe095e3c468a5ff3ca335021642022-09-24 9:31:076 hrs 17 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x3ead9928fa620b7b99f7fc7c26b2b681ce2c04d9e183b6a121ebdcdf9fdfe516335016562022-09-24 9:13:356 hrs 35 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x81cd2892389c1511d8c7ecbf9e8cb4ea84af5f32aebf0f49697314f8cffb452a335008892022-09-24 8:45:537 hrs 2 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xd07b347f4e763df8d912cff6d51dc8a9ff6a35a438d27ff37c5593d974f3fabb335008842022-09-24 8:45:437 hrs 3 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xc2a62bb0adcb70feebcaf60e9d8e74968eeeafd3a3668abcc32abe52809b9e04335007782022-09-24 8:42:037 hrs 6 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x831ce0d94fa851b26de34301cd9e81a9cdaa626bf0de891a73801cc95cec5a3d335007762022-09-24 8:41:597 hrs 6 mins ago QuickSwap: Factory  Contract Creation0 MATIC
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0x6e6ee721f60cecb1d566bf956b6e10f038fafbcc5dab25d46cf2bfd7e1c5a30a335003522022-09-24 8:27:267 hrs 21 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x87a5f864d1d86c2a3a319064bd6c7a150353535f49bb30884c2e6e3ef0572532335000562022-09-24 8:17:147 hrs 31 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xae594575cb39c4e3fd47c84b907b17280bdef29013ad9ee952a8cfca1555e1d7334996102022-09-24 8:01:547 hrs 46 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x4e2a359c5717cd16a2d446c1ff099dccb22bd7b15f5246cbb561fea908afb2e0334993302022-09-24 7:52:187 hrs 56 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0xca3e6d1f65e65f4f5d94794aff7e90fbd845cd4428f749b53d25f3e04edeffac334986652022-09-24 7:29:248 hrs 19 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x5ffbb88914102ed066d722fbe3eb3332ca1fbe81cae4512aa3251017bd60e327334985932022-09-24 7:26:568 hrs 21 mins ago QuickSwap: Factory  Contract Creation0 MATIC
0x73664702c77a26d3bbae6848e9e00b926002e857e450c5c7de845a68756172d0334957132022-09-24 5:47:5410 hrs 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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