Contract 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6 1

 

Contract Overview

Balance:
0 BNB

BNB Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xadb94be6c16bcb0121838ef12921dfe537779116b939f4f761e60d8bf35433e9Create Pair69247642021-04-27 8:11:32216 days 6 hrs ago0xfed34c436c66fba8ed31048fc9aad387e0461730 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215405
0xca35a79fc32dd68b8c7d4a46b2008977352fd2b1a465b146d1a1aae4b275b755Transfer68234722021-04-23 19:22:25219 days 19 hrs ago0xe8172fe04dd50d9e6ec5376c5dab93575944cc6b IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60.066840987178216 BNB0.000105
0xd559d746b797aec6eb4f1b53ffe943a9dab723f3b392779a4781b50158a367b1Create Pair68102322021-04-23 8:20:01220 days 6 hrs ago0xbe16b821428d9e095e99229b74c1ef06a406d3eb IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215515
0x08c47d4efcca71c26cd5eb3206d9df6fcda263175b30b515752d47159e3f8b76Create Pair68056102021-04-23 4:28:22220 days 10 hrs agoNerve: Deployer IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x0dcff0e42565228745e4bfef5ea6502073767312a88d1c82a84e38f267fc53a0Create Pair67945932021-04-22 18:48:15220 days 20 hrs agoBlizzard Money: Deployer IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215515
0xa3f426bc0423caa8a7051b6f9a76d532446499bdd53354707d4b799901b4460fCreate Pair67945842021-04-22 18:47:48220 days 20 hrs agoBlizzard Money: Deployer IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215515
0xdf44e589920db47be0af6d0c4d35a4d54ec4c290afb81e30c2a407b4880af59fCreate Pair67940052021-04-22 18:18:47220 days 20 hrs ago0xde8dcd65042db880006421dd3eca5d94117642d1 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xde7e7129cd364d9a983926a69559e6db7549217521a1f258be1ec2a028a7cab5Create Pair67859862021-04-22 11:30:10221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x01f2dbc0530438a6f8ede3b028dbe8f163a5765e46acb39a1d9e3b2d6d16274fCreate Pair67859832021-04-22 11:30:01221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215405
0x05af29c83c26d1da9680c0c37869709ae9d4fc965cab9c190328e61e5e862c72Create Pair67859802021-04-22 11:29:52221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xbc5130eb585c11e2eaed0cc2d4724b7bdb6afd213e5229a36ca0de2cc52d62b4Create Pair67859762021-04-22 11:29:40221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x3904b8f6fe69d6401f586e7b4043045cd8990a0c1fb002be5a312e77da8db2baCreate Pair67859732021-04-22 11:29:31221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xe59d0a7c12f1bc905077fa857e42a41484cb3cec42bca77c3374d7ba5e2f297dCreate Pair67859692021-04-22 11:29:19221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x15e3e0931ee6bad14b1c2c3074d276c6abe315bf75288a72c6c2aef7f0b478e8Create Pair67859662021-04-22 11:29:10221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x405954f2c2a0db09a97806ae49fb6aab6c0154281c63a2391451541e7dc6dfd6Create Pair67859622021-04-22 11:28:58221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xa8ff0981f1d0602f064741e2e88f0b63e300dc4c7917aa0dff81ad3fc6680a2eCreate Pair67859542021-04-22 11:28:34221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x058a468bb2c9db32132e1e2381bb28315aba123d7f820eec2e4a46dbe57c1028Create Pair67859512021-04-22 11:28:25221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x22ba42ab301077f66ff4b5abb131d4330d3e01beccf401b6005eb4a6c6a1dae7Create Pair67859472021-04-22 11:28:13221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x946dc2ce6701a2a683e61f21d854d325ea14733c8bb2dd98a0e6c8bcbebe052bCreate Pair67858442021-04-22 11:23:04221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x401a336227a9518b2e35caae91e81293e02281d0085ab35718cd1a98dcc901ddCreate Pair67858422021-04-22 11:22:58221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x70822f61c5584cdc50d18d1f99b4ec8b2dddc36b7d5248c55a0f95d7c6f4b436Create Pair67858392021-04-22 11:22:49221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xe5b8bd369330335614a5077627c8be91451ac89dcb69620fbf2af277f60d23d0Create Pair67858372021-04-22 11:22:43221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xfb20ad54746b52ee286a14c892e9e7ede6fc69ac89aa2de30f2de300464b2fcbCreate Pair67858342021-04-22 11:22:34221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0x80c406fd9864a0774e000aed730a261687d0a74a964b7e1a0c495d7b60d6228fCreate Pair67858312021-04-22 11:22:25221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
0xc43f301af3cebaee94316a37a252cacfc20a60815f6846c482e776f8822576d5Create Pair67858282021-04-22 11:22:16221 days 3 hrs ago0x36469e4e6ec2fb3e06db1d747f3fc1f1fc762f02 IN 0x877fe7f4e22e21be397cd9364fafd4af4e15edb60 BNB0.016215465
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0xe87413a75022e3332059675db8d32fee6239b8aaca1860502e2fd4aaba54f0b869816242021-04-29 7:55:23214 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xecf91d37ad105e2e6715e4c27b922e4bdcb6e72d1dd8eb6beae52a937cbb178469811742021-04-29 7:32:53214 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x057167cc4b2b95c9304edb1c82909582eb8d3cf9a3613cd83a4103b86c824c3869803922021-04-29 6:53:45214 days 8 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x63b7b5cd503e5620d1dd5cb811058cd578cf7ef277bd950849f5848309a4c00d69803812021-04-29 6:53:12214 days 8 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xa95f78c1aaafa536887314a7d686d7cfc2607a15926b318d8c0468e5d514ff6469708562021-04-28 22:54:03214 days 16 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x0fdd86cf233a087eacd57941d0679d2ab89accb44854c87a383911f72789e50f69275072021-04-27 10:28:54216 days 4 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xadb94be6c16bcb0121838ef12921dfe537779116b939f4f761e60d8bf35433e969247642021-04-27 8:11:32216 days 6 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x0520100aa5c2127f01fbb9e3895a8ff43af0900e7d8a26f064dc265264797ebc68383162021-04-24 7:46:16219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x0520100aa5c2127f01fbb9e3895a8ff43af0900e7d8a26f064dc265264797ebc68383162021-04-24 7:46:16219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xd08e1b589c78d8ebb861ff9b85fee37dc30ce9c058b8495542cc6798265cdcb468382322021-04-24 7:42:04219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x9602163b35998cc919b3fd989c51d72d25328d0e5e4bfa5ee174388663f4025968382192021-04-24 7:41:25219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x51610cb6ac3a6e88f866dd2505e258f36d6f632990f7c9de40dee2ea6767913168381282021-04-24 7:36:52219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x51610cb6ac3a6e88f866dd2505e258f36d6f632990f7c9de40dee2ea6767913168381282021-04-24 7:36:52219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xb54d87f8088b8bd92b13cf96d70e1b06a1c10248f14f8eea9e5b9c66d379b7ba68380452021-04-24 7:32:43219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xd16eb0fd18fcb9a2270f57ac2a02182c152c8d8c5ec1c08a6e80a6210edcbebd68380322021-04-24 7:32:04219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x92219effb1c016e88f292ff9b946b1b42341bdfab51ad52c200c5411a304976e68379262021-04-24 7:26:46219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xf97d7849d0e9c55297da217781dd1dbb7f3248af0ffa3cee2eaf60578e7a6a0e68379132021-04-24 7:26:07219 days 7 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x85da24571e87e7bb401b162f4c7990014d710ebf08b16825fa6c0e47bfe5802868309512021-04-24 1:37:44219 days 13 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x9bf78ff253d4bed48b8e8c198979796638182360915a8712b4074a2f8d49b31068176592021-04-23 14:31:36220 days 29 mins ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x7786c5e9736bc7770b01ed453271e2198c10e19d5deb60a4352b1d8e0926ee9568169272021-04-23 13:55:00220 days 1 hr ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xe54e6179fe7bcf3b163abd3afbce231a250b48d5243df62d31b4e6c199311b5568168482021-04-23 13:51:03220 days 1 hr ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0x7f2b51a6d3145a220b322c5a250f2f88fbb4e5cc3154c2fed88955bacdf997bd68167702021-04-23 13:47:09220 days 1 hr ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xfc2fc75b7694677dfb89df9d1bac2bc50c6b6076d102d12bdd59a457a267cbc468148862021-04-23 12:12:57220 days 2 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xbfdaa26c28db3821b130f60567de434ca232811823b4fababcbb4d8b2d960ae868147942021-04-23 12:08:21220 days 2 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
0xaeb5b792109783bdaf4c33191ad1909a592856a4d70d25fdcc72f1997f07d3f168119582021-04-23 9:46:26220 days 5 hrs ago 0x877fe7f4e22e21be397cd9364fafd4af4e15edb6  Contract Creation0 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
PancakeFactory

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at BscScan.com on 2021-04-22
*/

/**
 *Submitted for verification at BscScan.com on 2021-04-22
*/

/**
 *Submitted for verification at BscScan.com on 2020-09-19
*/

pragma solidity =0.5.16;


interface IPancakeFactory {
    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 IPancakePair {
    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 IPancakeERC20 {
    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 PancakeERC20 is IPancakeERC20 {
    using SafeMath for uint;

    string public constant name = 'Pancake LPs';
    string public constant symbol = 'Cake-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, 'Pancake: 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, 'Pancake: 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 IPancakeCallee {
    function pancakeCall(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

contract PancakePair is IPancakePair, PancakeERC20 {
    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, 'Pancake: 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))), 'Pancake: 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, 'Pancake: 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), 'Pancake: 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 8/25 of the growth in sqrt(k)
    function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
        address feeTo = IPancakeFactory(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)).mul(8);
                    uint denominator = rootK.mul(17).add(rootKLast.mul(8));
                    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, 'Pancake: 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, 'Pancake: 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, 'Pancake: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'Pancake: 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, 'Pancake: 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) IPancakeCallee(to).pancakeCall(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, 'Pancake: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = (balance0.mul(10000).sub(amount0In.mul(25)))/10;
        uint balance1Adjusted = (balance1.mul(10000).sub(amount1In.mul(25)))/10;
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'Pancake: 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 PancakeFactory is IPancakeFactory {
    bytes32 public constant INIT_CODE_PAIR_HASH = keccak256(abi.encodePacked(type(PancakePair).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, 'Pancake: IDENTICAL_ADDRESSES');
        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'Pancake: ZERO_ADDRESS');
        require(getPair[token0][token1] == address(0), 'Pancake: PAIR_EXISTS'); // single check is sufficient
        bytes memory bytecode = type(PancakePair).creationCode;
        bytes32 salt = keccak256(abi.encodePacked(token0, token1));
        assembly {
            pair := create2(0, add(bytecode, 32), mload(bytecode), salt)
        }
        IPancakePair(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, 'Pancake: FORBIDDEN');
        feeTo = _feeTo;
    }

    function setFeeToSetter(address _feeToSetter) external {
        require(msg.sender == feeToSetter, 'Pancake: 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)

000000000000000000000000412febf6be0ca21209cab443143f01c7131c10f8

-----Decoded View---------------
Arg [0] : _feeToSetter (address): 0x412febf6be0ca21209cab443143f01c7131c10f8

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000412febf6be0ca21209cab443143f01c7131c10f8


Deployed ByteCode Sourcemap

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Swarm Source

bzzr://aa7dda97d37c042f1e4b1e4d4f855689ffa3589fc4f1d66546f27242ee014d1a
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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