Contract 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7 1

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash
Method
Block
From
To
Value [Txn Fee]
0x12cd099bf014cc5e19f2884b6d54b7e9e9e5308d038ccefa103a6db2b6262ea3Transfer371664822022-12-23 5:21:3343 days 4 hrs ago0x95c71fa9a9e1a8a857905dbc323882dec86e2720 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70.001 MATIC0.189426045 9,001
0x5112d1c033e23475cdfd5f3aefb169cf4237b8765180367f303ab4e5588bda48Create Pair291199622022-06-03 15:37:32245 days 17 hrs ago0x2708e897db4b75dcb2900f4ba89d3195a7b638a3 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.161631820151 80.576758257
0x9f1221265caea4f2b23a3c0e1663498a2b4363a8c8780c474fff177da4b7fa0dCreate Pair197373092021-10-02 0:04:29490 days 9 hrs ago0xc3c206540e37a410b78b1219e623d7929a3f8f13 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0601783830
0x1ec4674cc5bc146a8b055fd6f298c5c4f5328b2756189df8e861a6efaacdc7e5Create Pair197372232021-10-02 0:01:33490 days 9 hrs ago0xc3c206540e37a410b78b1219e623d7929a3f8f13 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0601780830
0xd07c562578b2e8c5b430a1a57d896d1a77e28c46794ac586993e09bcf68150dbCreate Pair196136412021-09-28 14:47:20493 days 18 hrs ago0x934f744ad21758d47f41f3cf65264a82f0551cb8 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.100297350
0x969c22d1ed6d9ff0d8c1451f5693e20dfa6a8e77de5951aa20f1367fcb57ad5aCreate Pair196136272021-09-28 14:46:48493 days 18 hrs ago0x934f744ad21758d47f41f3cf65264a82f0551cb8 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.100297350
0xd7cfe9a5c8fc0fefbf8551f12d10afcc4743aa7eb2a023316897a4042cc4dd7eCreate Pair194974282021-09-25 12:42:57496 days 20 hrs ago0x50d13b084cdbeaf35cfb8122435a005c08ec3066 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0060178383
0x6fbaaad4349e5a8282221b05e8bba4fa814162e4c09c908af800bcc88b744f01Create Pair194974282021-09-25 12:42:57496 days 20 hrs ago0x50d13b084cdbeaf35cfb8122435a005c08ec3066 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0802378440
0x3a0f43fc9ab2574389ffea44052540bcf2fcfe82236be098dbf88bcc8f84a98cCreate Pair194309302021-09-23 19:27:24498 days 13 hrs ago0xf98fdd55330ffc2606638135a449a006dd63ca1a IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.100296850
0xeb9aba2fb9ffe492fa874db73b91fe21b042ca2eef80932e52b62499ef9ac484Create Pair194308742021-09-23 19:25:26498 days 13 hrs ago0xf98fdd55330ffc2606638135a449a006dd63ca1a IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0401189220
0x79f743ea04bdea13cb651ec311c50164d3940925716b0f1c220556617338df7bCreate Pair194308622021-09-23 19:25:02498 days 13 hrs ago0xf98fdd55330ffc2606638135a449a006dd63ca1a IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0401189220
0xe8d5cafade7ade87270ea315d30696f7d4b1442ef11d3ab176b036e2b503ed5dCreate Pair193764042021-09-22 6:58:48500 days 2 hrs ago0xf98fdd55330ffc2606638135a449a006dd63ca1a IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0200593610
0x16ceba8b412c904a28758caa7aab303ab112b9275e497b9e9c0404bd6bd0e75eCreate Pair193751862021-09-22 6:05:53500 days 3 hrs ago0x7f837e531ceabc43640b734ca5bf1d7887603ee2 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0200594610
0x66ab803bc355fc9835c495db823edb39bc095b888162c6e3bfa43c4c72c00751Create Pair193751192021-09-22 6:03:35500 days 3 hrs ago0x7f837e531ceabc43640b734ca5bf1d7887603ee2 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0200594610
0x904fd6eacbf36bef93e91e466f7ca66ff01b45e8e92681a8c1c47c07dcc4693dCreate Pair166309602021-07-08 6:24:04576 days 2 hrs ago0x0d31cb017573b8398b283b068ce7cf53c3de6d60 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059341
0x2faa50ed4a25408579bcbc018bc7f290f4da315ccdfbf355f4a51cb1824d9b1eCreate Pair165739322021-07-06 19:42:20577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0060178083
0xc02ecbf0a9860497a7f7d7c508b53d7df0b82ad7344679105176867fa5b3992fCreate Pair165737922021-07-06 19:35:24577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.002226600061.11
0xd404dcbc38e9173a74a7c937d3c52ce17e3daf625f70d7b6383e7df09486d9f5Create Pair165737922021-07-06 19:35:24577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059461
0x30a8eeea5bf4fdd2ab8b1f5d4b05ac9b05e20148cfc8b24b380f64c1d836be53Create Pair165737882021-07-06 19:35:16577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059461
0x87a3b4b1e5bf06a94c613a09a8ea0a7fd9bef7ba9ba2865556d2aedf440c8c60Create Pair165737382021-07-06 19:33:32577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059361
0xe39180e8b800b1b6cd99a0e85392ff8a50f9d01c66f8564111b4dcbbfb66240eCreate Pair165737312021-07-06 19:33:18577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059461
0xe436ec166b2fede9f805d39610b55a463f6bb7cd1f6c8b3c023631eb48e11c6aCreate Pair165737232021-07-06 19:33:02577 days 13 hrs ago0xdcab82ae4710e4cb0ed05472068594fbb9866132 IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0020059461
0x81872ade8709834e2a322d0f5f0749b9db50b6f8f09a3ea0889a3183bf8e35a0Set Fee To165723302021-07-06 18:40:52577 days 14 hrs agoJetSwap: Deployer IN  0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac70 MATIC0.0000460331
0x9f514edd48d1612b5225499147b32c02b77cdd051a05ca6820b5858cce65f44e0x60806040165693742021-07-06 16:52:52577 days 16 hrs agoJetSwap: Deployer IN  Create: JetswapFactory0 MATIC0.0024395430121.000001235
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0x7cbc877a57f4df4a8b0767b5fd9d998b346cf0bd28daf97ffc2745fe9938199a384073722023-01-22 23:38:1112 days 9 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x42d36d984f1e082c2d734912cb5c68cbd51ed14061343dfe16caea1d267d61ce379548792023-01-11 19:22:2523 days 14 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x4f13a7dadb7c90a9afa129eb731d566d9224c4b6544d951a51569d49c4fa5482376848712023-01-05 2:25:5530 days 6 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x108159d47c5597407409b5cc13960d42a6d6fb267612f35a5405af12f06f7bd6371254512022-12-22 4:55:0744 days 4 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x74f8caf75ac557d8ec46500fb8c964ac398cf83884aece9f683443ea7dbb6f43371010282022-12-21 14:23:5544 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x800dd59902d4e2e7eeba88682b8880277effedd8fb467154c4354ac5d900af8a352147722022-11-05 2:54:3091 days 6 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xe5f34f40d2df73c3ea75ebce893f2432af326344b81ba4ce069fba8a4ef620b4349921122022-10-30 15:55:1996 days 17 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x276f7f9ec214b06aa59e58bd03bde04362c611300dced22a41bd1440e8a27d15347645902022-10-25 2:20:24102 days 7 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xce491ff476ccab861df9ba868f0a96491a4f76a72c46d8389bac26efb203b1c9347067152022-10-23 16:18:45103 days 17 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x4a080d7fe6c04db1e1f0694fae3d75c5164aab5e603404113f960c3c31c0114d347042722022-10-23 14:54:36103 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xc6be5cfe36ccb001e37cd0ba393dd3e2f2a5e88a162ac762598bd5c0120ccf40347042092022-10-23 14:52:26103 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xa66ffabcb87edd8f1d6e68052f0fa5271466ade15a46c85a9f12cc688d1b1942347037562022-10-23 14:36:52103 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x6bfbeea5aec84ced5ceba6f8282c8945f20e0c9cb9fa57af6080eb739148052c347034172022-10-23 14:25:10103 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x0721a5c9d8c6069683b18c09bb570cfc463612d9ae93a3c1464fab6dc3d5dfaa332744332022-09-18 20:36:29138 days 12 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xf33467ee522221ad8428ae130490188ce09afb406b195bdb44c2ee1eb9a1afb8326868942022-09-04 16:30:49152 days 16 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xdbb5e748b06282a9cdbfea5338772602f0d555be211413074ee0f28e82ac4bb3324063462022-08-28 8:02:11160 days 1 hr ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x314b0cb3887e264659f51f2a9e0dd7d145c28f6f32a19be1848d602374ea2d55323835922022-08-27 17:02:12160 days 16 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x11dbbd851e589f29cc3ffc0fe6e5d55950abc5b6e8e7a94599d4e0c05aeb8794322336542022-08-23 15:15:57164 days 18 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x66099a2c09f77d1c6930dec9624059a66ece42a2357afed9925e5d28e284cec9321977792022-08-22 16:39:57165 days 16 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x9fe8688139a744b7820bbc3eeec1b4df0aa1ec3a2f3e025c262444b34bcaeb31321759802022-08-22 2:58:43166 days 6 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xd7166a9053d50ec1c80901d0a0ebf7cb40f5b89e067472079463d63b24ca013d320949472022-08-20 2:33:30168 days 6 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xca4c3be2a993a18a8b9798f2d7bbe52ff6dfab81840d132b3391b46a0e2a85a9312738772022-07-29 11:16:50189 days 22 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0xa3dd8d1903d1837f1f66069cdc2779aa447f2c73724471289b8ce70273a5187c312719912022-07-29 10:09:47189 days 23 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x6eafc1ec328c5177c0735f0ef89c199f5234523393a2cc3a22f80ec106d35073312642412022-07-29 5:34:40190 days 3 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
0x1d3e43f36406676e0e70446ca836eeab7c5f0ac5c0b5d25a8c29c08c32051fae312580422022-07-29 1:45:43190 days 7 hrs ago 0x668ad0ed2622c62e24f0d5ab6b6ac1b9d2cd4ac7  Contract Creation0 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
JetswapFactory

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-07-06
*/

pragma solidity =0.5.16;

interface IJetswapFactory {
    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;
}

interface IJetswapPair {
    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;
}

interface IJetswapERC20 {
    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;
}

// 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');
    }
}

contract JetswapERC20 is IJetswapERC20 {
    using SafeMath for uint;

    string public constant name = 'Jetswap LPs';
    string public constant symbol = 'pWINGS-LP';
    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, 'Jetswap: 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, 'Jetswap: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }
}

// 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;
        }
    }
}

// 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);
    }
}

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);
}

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

contract JetswapPair is IJetswapPair, JetswapERC20 {
    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, 'Jetswap: 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))), 'Jetswap: 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, 'Jetswap: 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), 'Jetswap: 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 = IJetswapFactory(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, 'Jetswap: 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, 'Jetswap: 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, 'Jetswap: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'Jetswap: 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, 'Jetswap: 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) IJetswapCallee(to).jetswapCall(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, 'Jetswap: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(1));
        uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(1));
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'Jetswap: 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);
    }
}

contract JetswapFactory is IJetswapFactory {
    bytes32 public constant INIT_CODE_PAIR_HASH = keccak256(abi.encodePacked(type(JetswapPair).creationCode));

    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, 'Jetswap: IDENTICAL_ADDRESSES');
        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'Jetswap: ZERO_ADDRESS');
        require(getPair[token0][token1] == address(0), 'Jetswap: PAIR_EXISTS'); // single check is sufficient
        bytes memory bytecode = type(JetswapPair).creationCode;
        bytes32 salt = keccak256(abi.encodePacked(token0, token1));
        assembly {
            pair := create2(0, add(bytecode, 32), mload(bytecode), salt)
        }
        IJetswapPair(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, 'Jetswap: FORBIDDEN');
        feeTo = _feeTo;
    }

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

Contract Security Audit

Contract ABI

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

000000000000000000000000c9cb0b9fe83698dfc3d3935d31baddedb5c06151

-----Decoded View---------------
Arg [0] : _feeToSetter (address): 0xc9cb0b9fe83698dfc3d3935d31baddedb5c06151

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000c9cb0b9fe83698dfc3d3935d31baddedb5c06151


Deployed ByteCode Sourcemap

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Swarm Source

bzzr://f7a9b3cf2967d5b6b944c222f840d226a52fac3df52bd7de1e1615283c1f6fc4
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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