Contract 0xa51d3c9e7b3657907777f600f075efe442c0f098

 

Contract Overview

Balance:
0.67584660825366445 BNB

BNB Value:
$235.31 (@ $348.17/BNB)

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x28a153c2d656f6728bb439e98668270b174db28ec4ff652065098e6311a935a1Approve109321092021-09-15 9:38:4310 days 12 hrs ago0x5dd7b90509164646c590d2a4df27e6dcfec3a598 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000101997
0xa43e6186e1dd6967fdb4dcc8ea73348aff5a1334aecdd2137e76ed98230040f2Approve108372522021-09-12 2:23:0613 days 19 hrs ago0x2abd151ae3adf29fdf641931a3d73db027587fdb IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.0000743121
0x1912a38ed65facaeb5ca7137af7dd3ef84178f4587ec35b6ca001ed5b5cf58d5Approve104270582021-08-28 16:51:5528 days 4 hrs ago0x9a4ee2717094bb91cb9e3a0f5ef3269daa48c67b IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x6d1d07d345ec99811ea7c927c1ac501dc9cba9a1b5dfcca03e195dfd13d72996Approve104270572021-08-28 16:51:5028 days 4 hrs ago0x9a4ee2717094bb91cb9e3a0f5ef3269daa48c67b IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xe7310ca3eff20cb51f7a1a26d45d9a988753eddd8f5f0c3550d02b2c6c6dc5b3Approve102468362021-08-22 9:01:5834 days 12 hrs ago0x4a2d4a0c1d9f0f859809215ab5e2ea3ad816b9e1 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x8eea0cc7ceca6e28b3e9a7eeb4e37f9b77fef5edeef39b70fa54aedeaed7af42Approve102197412021-08-21 10:14:3235 days 11 hrs ago0x4223ddfbbf2d6e6fce60097de38aee853f8e75cd IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000101997
0x88a40e879dde5175a72d568e08b058087df337f8c409484daf29dd504be4c28bApprove100429122021-08-15 6:13:4141 days 15 hrs ago0x005a29730d2f5bfba7dd0b93a9640022326cc9c5 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x07302d42eeb893d0fa65373640682cc94b0fc484fdc0bc73594195d54326f00dTransfer99944042021-08-13 13:23:5843 days 8 hrs ago0x9d4c31a3f6630d3b9ae5f04ba08ddfa21acf2e19 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.001591945
0x8d0f813568dec7ccbddc6a9f9688f8cf50dde004ba2d02ae0a09c267411f9309Approve99360902021-08-11 11:12:2145 days 10 hrs ago0xf6cded21b5e0843b76a9117569e3810cbf71dcfa IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xee3307bfab09cd8a4354a0d63096f5d491e838be92710b194f6f1cc20d60cfd3Transfer98685082021-08-09 1:51:0347 days 19 hrs ago0x4bec8127c2a213a3284ec0c0c9d8e85dced69fa5 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.00177494
0xa0bbe548c5f4e204bb5431d0beddfee7a0440714b5a05e4d2f7b7d43329587c5Approve98313072021-08-07 18:07:5349 days 3 hrs ago0x130dccc9efa338c3e5fdb2593bed55bf03777854 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xef24624264bd5bc24b4ddcdc66be22de7f23fe64aa06b098075ee83ce3407fa0Approve98067052021-08-06 20:56:0650 days 46 mins ago0x27b300edcfb6c2ea7733545b6914a28847f66383 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x5f3c92773927e894a8e21c2650f1cfc5c416e3f36257cf44d27117455fc8c1c5Approve97827592021-08-06 0:14:1050 days 21 hrs ago0xf1d609af9e5126bab145286ced8fec8f341a7b04 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xea5522d2382d2ef38531a765b4288bb488f998badfd9bbf6d225c173fee19f59Approve97435352021-08-04 14:38:4252 days 7 hrs ago0x718e702eb24f0e17b4ca01d2c939bcafd8031448 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x44e1634ce0cc6be5d105b1e726848dfa2709b5fa70b5c4a1f996058de9d3b8e7Approve96868862021-08-02 13:07:1454 days 8 hrs ago0xc60f230095a91f4c8de3f57cb93dc566f3a67ef0 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x3abe799511e42e9b2dca3b92921049a33310898f5aa4c26be715a8898ad39603Approve96537192021-08-01 8:25:2155 days 13 hrs ago0x91bb871e58d1f28205ed82649aed09fc6224097c IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xf129c391c8589793505f37c66971b2180c4fc40713104401a7a2390641881794Transfer96269512021-07-31 9:26:3556 days 12 hrs ago0x978ebdd86e1fb2ac21927d92d44dc6000d8d4138 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.001775
0xa8bb5fbb0e461d37aaac49910ea4ee0fef8f087642c2dfd7be62a2360f3fdde1Approve96226482021-07-31 5:49:4756 days 15 hrs ago0x1af7315f58584372a7cf311827c2ee3d96f329f3 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xa0f10a306c832a0baeec906a891e032b786f854481b3b7eea834eee8e832410bApprove95811662021-07-29 18:31:5558 days 3 hrs ago0xc6d48b5a3badf41b02e284450d684b83badef817 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xe8ef04d678efe9d603bd913445aa8396b7bed524fb39e18aa87fc9d66c255a0dApprove94105022021-07-23 14:19:4564 days 7 hrs ago0x81d144471fb48b8df37b05f3b159b7366677fff0 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000101997
0xb7ac0765b76a0bb1c42cc55e782ffb780574a677545168d535dfacaef686e7f9Approve93024372021-07-19 20:11:1168 days 1 hr ago0x64b3d3b9159a6cd247292c225c6ae3422beff4cd IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xb5b7fe04bda84b0ab02569d2d2d8d79850f2929ac16f2b2c177979e75d7e5642Approve93022862021-07-19 20:03:3068 days 1 hr ago0x64b3d3b9159a6cd247292c225c6ae3422beff4cd IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0xd010a4ecad67eef09ac706c45b37dd00a5407a34a5853bb0f27cc1fba98d3b6aApprove92854762021-07-19 6:02:0068 days 15 hrs ago0x19c7dde74a16489443fe17e9f44a48050957c23c IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.00022263
0xf0bc2d773fc9917cd19f5625ec595c8c858ac3a9bc133facae5b20831c6c3ac5Approve92193362021-07-16 22:52:4970 days 22 hrs ago0x2b8a0c8cd656ac4e97b81d2c1fc91bebea15b239 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
0x6606143f94fe956afaae91a38a7175bf92dea413cb92b5f350ec5247bc1e0d6dApprove92104112021-07-16 15:26:3471 days 6 hrs ago0x22ced12970f2cc85e026c08823931b649e651ed0 IN  0xa51d3c9e7b3657907777f600f075efe442c0f0980 BNB0.000072855
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0x07302d42eeb893d0fa65373640682cc94b0fc484fdc0bc73594195d54326f00d99944042021-08-13 13:23:5843 days 8 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.00000062176360137 BNB
0x07302d42eeb893d0fa65373640682cc94b0fc484fdc0bc73594195d54326f00d99944042021-08-13 13:23:5843 days 8 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.00000062176360137 BNB
0xee3307bfab09cd8a4354a0d63096f5d491e838be92710b194f6f1cc20d60cfd398685082021-08-09 1:51:0347 days 19 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000000621776889714 BNB
0xee3307bfab09cd8a4354a0d63096f5d491e838be92710b194f6f1cc20d60cfd398685082021-08-09 1:51:0347 days 19 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000000621776889714 BNB
0xdc733cc96956c4752c09be7c212591ecb7a285bfb0c98846008722e6100f3cec97087262021-08-03 8:31:0053 days 13 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001087489258269 BNB
0xdc733cc96956c4752c09be7c212591ecb7a285bfb0c98846008722e6100f3cec97087262021-08-03 8:31:0053 days 13 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001087489258269 BNB
0xf129c391c8589793505f37c66971b2180c4fc40713104401a7a239064188179496269512021-07-31 9:26:3556 days 12 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001087519913266 BNB
0xf129c391c8589793505f37c66971b2180c4fc40713104401a7a239064188179496269512021-07-31 9:26:3556 days 12 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001087519913266 BNB
0x1985af4291166f574629af0c608be41509c797e41a695216b8213ba4ab95cdcf93798852021-07-22 12:45:1765 days 8 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001087550569991 BNB
0x1985af4291166f574629af0c608be41509c797e41a695216b8213ba4ab95cdcf93798852021-07-22 12:45:1765 days 8 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001087550569991 BNB
0xa255abf89b27783b96d6d2e2e98614221648fc550c67157ac221bd2b0da8044493798642021-07-22 12:44:1465 days 8 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001474997024239 BNB
0xa255abf89b27783b96d6d2e2e98614221648fc550c67157ac221bd2b0da8044493798642021-07-22 12:44:1465 days 8 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001474997024239 BNB
0x869db79063be115b00db00a684adfb60b33cb3af19096522f5ae0ea2e594d8d093796982021-07-22 12:35:5665 days 9 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.00000147504545806 BNB
0x869db79063be115b00db00a684adfb60b33cb3af19096522f5ae0ea2e594d8d093796982021-07-22 12:35:5665 days 9 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.00000147504545806 BNB
0x3a45d28fd8b50fb89dd4b0c4937706df6a0ca0ca73e602491fc90ec8c619e47f92892612021-07-19 9:11:1568 days 12 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001475093895062 BNB
0x3a45d28fd8b50fb89dd4b0c4937706df6a0ca0ca73e602491fc90ec8c619e47f92892612021-07-19 9:11:1568 days 12 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001475093895062 BNB
0x140c6653c2cceca9807e453f611e20a5c82f7e21f76f5058590152adec4c3d9792294292021-07-17 7:17:2870 days 14 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001475142335246 BNB
0x140c6653c2cceca9807e453f611e20a5c82f7e21f76f5058590152adec4c3d9792294292021-07-17 7:17:2870 days 14 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001475142335246 BNB
0xb48743a7628fd6a7c68606b560cbaebe3cbc3d9e96790c8dfe7f604a6cfdbc4892194132021-07-16 22:56:4070 days 22 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.00000147519077861 BNB
0xb48743a7628fd6a7c68606b560cbaebe3cbc3d9e96790c8dfe7f604a6cfdbc4892194132021-07-16 22:56:4070 days 22 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.00000147519077861 BNB
0x7d8940840e14660e061f117fdf05c3e49544455cf2b3518cc46d2703f774690592194072021-07-16 22:56:2270 days 22 hrs ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001475239225157 BNB
0x7d8940840e14660e061f117fdf05c3e49544455cf2b3518cc46d2703f774690592194072021-07-16 22:56:2270 days 22 hrs ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001475239225157 BNB
0x558ae59ee443f96b10f98bfc2b759bd32786aa8950794e79d2ea6b1fc019e8b291877982021-07-15 20:35:2372 days 1 hr ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001475287674885 BNB
0x558ae59ee443f96b10f98bfc2b759bd32786aa8950794e79d2ea6b1fc019e8b291877982021-07-15 20:35:2372 days 1 hr ago PancakeSwap: Router v2 0xa51d3c9e7b3657907777f600f075efe442c0f0980.000001475287674885 BNB
0x3cd4ad67522e5d2f42ee508b2d2ae6d85e3d8773073cef81f983db064585457f91877912021-07-15 20:35:0272 days 1 hr ago 0xa51d3c9e7b3657907777f600f075efe442c0f098 PancakeSwap: Router v20.000001475336127797 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
KrabToken

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 11 : KrabToken.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

import "./libs/BEP20.sol";

import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";

// KrabToken with Governance.
contract KrabToken is BEP20 {
    // Transfer tax rate in basis points. (default 6%)
    uint16 public transferTaxRate = 600;
    // Burn rate % of transfer tax. (default 20% x 6% = 1.2% of total amount).
    uint16 public burnRate = 20;
    // Max transfer tax rate: 10%.
    uint16 public constant MAXIMUM_TRANSFER_TAX_RATE = 1000;
    // Burn address
    address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;

    // Max transfer amount rate in basis points. (default is 0.5% of total supply)
    uint16 public maxTransferAmountRate = 50;
    // Addresses that excluded from antiWhale
    mapping(address => bool) private _excludedFromAntiWhale;
    // Automatic swap and liquify enabled
    bool public swapAndLiquifyEnabled = false;
    // Min amount to liquify. (default 500 KP)
    uint256 public minAmountToLiquify = 500 ether;
    // The swap router, modifiable. Will be changed to KrustyKrab's router when our own AMM release
    IUniswapV2Router02 public krabSwapRouter;
    // The trading pair
    address public krabSwapPair;
    // In swap and liquify
    bool private _inSwapAndLiquify;

    // The operator can only update the transfer tax rate
    address private _operator;

    // Events
    event OperatorTransferred(address indexed previousOperator, address indexed newOperator);
    event TransferTaxRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);
    event BurnRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);
    event MaxTransferAmountRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);
    event SwapAndLiquifyEnabledUpdated(address indexed operator, bool enabled);
    event MinAmountToLiquifyUpdated(address indexed operator, uint256 previousAmount, uint256 newAmount);
    event KrabSwapRouterUpdated(address indexed operator, address indexed router, address indexed pair);
    event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity);

    modifier onlyOperator() {
        require(_operator == msg.sender, "operator: caller is not the operator");
        _;
    }

    modifier antiWhale(address sender, address recipient, uint256 amount) {
        if (maxTransferAmount() > 0) {
            if (
                _excludedFromAntiWhale[sender] == false
                && _excludedFromAntiWhale[recipient] == false
            ) {
                require(amount <= maxTransferAmount(), "KP::antiWhale: Transfer amount exceeds the maxTransferAmount");
            }
        }
        _;
    }

    modifier lockTheSwap {
        _inSwapAndLiquify = true;
        _;
        _inSwapAndLiquify = false;
    }

    modifier transferTaxFree {
        uint16 _transferTaxRate = transferTaxRate;
        transferTaxRate = 0;
        _;
        transferTaxRate = _transferTaxRate;
    }

    /**
     * @notice Constructs the KrabToken contract.
     */
    constructor() public BEP20("Krabby Patty", "KP") {
        _operator = _msgSender();
        emit OperatorTransferred(address(0), _operator);

        _excludedFromAntiWhale[msg.sender] = true;
        _excludedFromAntiWhale[address(0)] = true;
        _excludedFromAntiWhale[address(this)] = true;
        _excludedFromAntiWhale[BURN_ADDRESS] = true;
    }

    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
        _moveDelegates(address(0), _delegates[_to], _amount);
    }

    /// @dev overrides transfer function to meet tokenomics of KP
    function _transfer(address sender, address recipient, uint256 amount) internal virtual override antiWhale(sender, recipient, amount) {
        // swap and liquify
        if (
            swapAndLiquifyEnabled == true
            && _inSwapAndLiquify == false
            && address(krabSwapRouter) != address(0)
            && krabSwapPair != address(0)
            && sender != krabSwapPair
            && sender != owner()
        ) {
            swapAndLiquify();
        }

        if (recipient == BURN_ADDRESS || transferTaxRate == 0) {
            super._transfer(sender, recipient, amount);
        } else {
            // default tax is 5% of every transfer
            uint256 taxAmount = amount.mul(transferTaxRate).div(10000);
            uint256 burnAmount = taxAmount.mul(burnRate).div(100);
            uint256 liquidityAmount = taxAmount.sub(burnAmount);
            require(taxAmount == burnAmount + liquidityAmount, "KP::transfer: Burn value invalid");

            // default 95% of transfer sent to recipient
            uint256 sendAmount = amount.sub(taxAmount);
            require(amount == sendAmount + taxAmount, "KP::transfer: Tax value invalid");

            super._transfer(sender, BURN_ADDRESS, burnAmount);
            super._transfer(sender, address(this), liquidityAmount);
            super._transfer(sender, recipient, sendAmount);
            amount = sendAmount;
        }
    }

    /// @dev Swap and liquify
    function swapAndLiquify() private lockTheSwap transferTaxFree {
        uint256 contractTokenBalance = balanceOf(address(this));
        uint256 maxTransferAmount = maxTransferAmount();
        contractTokenBalance = contractTokenBalance > maxTransferAmount ? maxTransferAmount : contractTokenBalance;

        if (contractTokenBalance >= minAmountToLiquify) {
            // only min amount to liquify
            uint256 liquifyAmount = minAmountToLiquify;

            // split the liquify amount into halves
            uint256 half = liquifyAmount.div(2);
            uint256 otherHalf = liquifyAmount.sub(half);

            // capture the contract's current ETH balance.
            // this is so that we can capture exactly the amount of ETH that the
            // swap creates, and not make the liquidity event include any ETH that
            // has been manually sent to the contract
            uint256 initialBalance = address(this).balance;

            // swap tokens for ETH
            swapTokensForEth(half);

            // how much ETH did we just swap into?
            uint256 newBalance = address(this).balance.sub(initialBalance);

            // add liquidity
            addLiquidity(otherHalf, newBalance);

            emit SwapAndLiquify(half, newBalance, otherHalf);
        }
    }

    /// @dev Swap tokens for eth
    function swapTokensForEth(uint256 tokenAmount) private {
        // generate the krabSwap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = krabSwapRouter.WETH();

        _approve(address(this), address(krabSwapRouter), tokenAmount);

        // make the swap
        krabSwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    /// @dev Add liquidity
    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(krabSwapRouter), tokenAmount);

        // add the liquidity
        krabSwapRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            operator(),
            block.timestamp
        );
    }

    /**
     * @dev Returns the max transfer amount.
     */
    function maxTransferAmount() public view returns (uint256) {
        return totalSupply().mul(maxTransferAmountRate).div(10000);
    }

    /**
     * @dev Returns the address is excluded from antiWhale or not.
     */
    function isExcludedFromAntiWhale(address _account) public view returns (bool) {
        return _excludedFromAntiWhale[_account];
    }

    // To receive BNB from krabSwapRouter when swapping
    receive() external payable {}

    /**
     * @dev Update the transfer tax rate.
     * Can only be called by the current operator.
     */
    function updateTransferTaxRate(uint16 _transferTaxRate) public onlyOperator {
        require(_transferTaxRate <= MAXIMUM_TRANSFER_TAX_RATE, "KP::updateTransferTaxRate: Transfer tax rate must not exceed the maximum rate.");
        emit TransferTaxRateUpdated(msg.sender, transferTaxRate, _transferTaxRate);
        transferTaxRate = _transferTaxRate;
    }

    /**
     * @dev Update the burn rate.
     * Can only be called by the current operator.
     */
    function updateBurnRate(uint16 _burnRate) public onlyOperator {
        require(_burnRate <= 100, "KP::updateBurnRate: Burn rate must not exceed the maximum rate.");
        emit BurnRateUpdated(msg.sender, burnRate, _burnRate);
        burnRate = _burnRate;
    }

    /**
     * @dev Update the max transfer amount rate.
     * Can only be called by the current operator.
     */
    function updateMaxTransferAmountRate(uint16 _maxTransferAmountRate) public onlyOperator {
        require(_maxTransferAmountRate > 0, "KP::updateMaxTransferAmountRate: Invalid amount");
        require(_maxTransferAmountRate <= 10000, "KP::updateMaxTransferAmountRate: Max transfer amount rate must not exceed the maximum rate.");
        emit MaxTransferAmountRateUpdated(msg.sender, maxTransferAmountRate, _maxTransferAmountRate);
        maxTransferAmountRate = _maxTransferAmountRate;
    }

    /**
     * @dev Update the min amount to liquify.
     * Can only be called by the current operator.
     */
    function updateMinAmountToLiquify(uint256 _minAmount) public onlyOperator {
        emit MinAmountToLiquifyUpdated(msg.sender, minAmountToLiquify, _minAmount);
        minAmountToLiquify = _minAmount;
    }

    /**
     * @dev Exclude or include an address from antiWhale.
     * Can only be called by the current operator.
     */
    function setExcludedFromAntiWhale(address _account, bool _excluded) public onlyOperator {
        _excludedFromAntiWhale[_account] = _excluded;
    }

    /**
     * @dev Update the swapAndLiquifyEnabled.
     * Can only be called by the current operator.
     */
    function updateSwapAndLiquifyEnabled(bool _enabled) public onlyOperator {
        emit SwapAndLiquifyEnabledUpdated(msg.sender, _enabled);
        swapAndLiquifyEnabled = _enabled;
    }

    /**
     * @dev Update the swap router.
     * Can only be called by the current operator.
     */
    function updateKrabSwapRouter(address _router) public onlyOperator {
        krabSwapRouter = IUniswapV2Router02(_router);
        krabSwapPair = IUniswapV2Factory(krabSwapRouter.factory()).getPair(address(this), krabSwapRouter.WETH());
        require(krabSwapPair != address(0), "KP::updateKrabSwapRouter: Invalid pair address.");
        emit KrabSwapRouterUpdated(msg.sender, address(krabSwapRouter), krabSwapPair);
    }

    /**
     * @dev Returns the address of the current operator.
     */
    function operator() public view returns (address) {
        return _operator;
    }

    /**
     * @dev Transfers operator of the contract to a new account (`newOperator`).
     * Can only be called by the current operator.
     */
    function transferOperator(address newOperator) public onlyOperator {
        require(newOperator != address(0), "KP::transferOperator: new operator is the zero address");
        emit OperatorTransferred(_operator, newOperator);
        _operator = newOperator;
    }

    // Copied and modified from YAM code:
    // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol
    // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol
    // Which is copied and modified from COMPOUND:
    // https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol

    /// @dev A record of each accounts delegate
    mapping (address => address) internal _delegates;

    /// @notice A checkpoint for marking number of votes from a given block
    struct Checkpoint {
        uint32 fromBlock;
        uint256 votes;
    }

    /// @notice A record of votes checkpoints for each account, by index
    mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;

    /// @notice The number of checkpoints for each account
    mapping (address => uint32) public numCheckpoints;

    /// @notice The EIP-712 typehash for the contract's domain
    bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");

    /// @notice The EIP-712 typehash for the delegation struct used by the contract
    bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");

    /// @notice A record of states for signing / validating signatures
    mapping (address => uint) public nonces;

      /// @notice An event thats emitted when an account changes its delegate
    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

    /// @notice An event thats emitted when a delegate account's vote balance changes
    event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);

    /**
     * @notice Delegate votes from `msg.sender` to `delegatee`
     * @param delegator The address to get delegatee for
     */
    function delegates(address delegator)
        external
        view
        returns (address)
    {
        return _delegates[delegator];
    }

   /**
    * @notice Delegate votes from `msg.sender` to `delegatee`
    * @param delegatee The address to delegate votes to
    */
    function delegate(address delegatee) external {
        return _delegate(msg.sender, delegatee);
    }

    /**
     * @notice Delegates votes from signatory to `delegatee`
     * @param delegatee The address to delegate votes to
     * @param nonce The contract state required to match the signature
     * @param expiry The time at which to expire the signature
     * @param v The recovery byte of the signature
     * @param r Half of the ECDSA signature pair
     * @param s Half of the ECDSA signature pair
     */
    function delegateBySig(
        address delegatee,
        uint nonce,
        uint expiry,
        uint8 v,
        bytes32 r,
        bytes32 s
    )
        external
    {
        bytes32 domainSeparator = keccak256(
            abi.encode(
                DOMAIN_TYPEHASH,
                keccak256(bytes(name())),
                getChainId(),
                address(this)
            )
        );

        bytes32 structHash = keccak256(
            abi.encode(
                DELEGATION_TYPEHASH,
                delegatee,
                nonce,
                expiry
            )
        );

        bytes32 digest = keccak256(
            abi.encodePacked(
                "\x19\x01",
                domainSeparator,
                structHash
            )
        );

        address signatory = ecrecover(digest, v, r, s);
        require(signatory != address(0), "KP::delegateBySig: invalid signature");
        require(nonce == nonces[signatory]++, "KP::delegateBySig: invalid nonce");
        require(now <= expiry, "KP::delegateBySig: signature expired");
        return _delegate(signatory, delegatee);
    }

    /**
     * @notice Gets the current votes balance for `account`
     * @param account The address to get votes balance
     * @return The number of current votes for `account`
     */
    function getCurrentVotes(address account)
        external
        view
        returns (uint256)
    {
        uint32 nCheckpoints = numCheckpoints[account];
        return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
    }

    /**
     * @notice Determine the prior number of votes for an account as of a block number
     * @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
     * @param account The address of the account to check
     * @param blockNumber The block number to get the vote balance at
     * @return The number of votes the account had as of the given block
     */
    function getPriorVotes(address account, uint blockNumber)
        external
        view
        returns (uint256)
    {
        require(blockNumber < block.number, "KP::getPriorVotes: not yet determined");

        uint32 nCheckpoints = numCheckpoints[account];
        if (nCheckpoints == 0) {
            return 0;
        }

        // First check most recent balance
        if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
            return checkpoints[account][nCheckpoints - 1].votes;
        }

        // Next check implicit zero balance
        if (checkpoints[account][0].fromBlock > blockNumber) {
            return 0;
        }

        uint32 lower = 0;
        uint32 upper = nCheckpoints - 1;
        while (upper > lower) {
            uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
            Checkpoint memory cp = checkpoints[account][center];
            if (cp.fromBlock == blockNumber) {
                return cp.votes;
            } else if (cp.fromBlock < blockNumber) {
                lower = center;
            } else {
                upper = center - 1;
            }
        }
        return checkpoints[account][lower].votes;
    }

    function _delegate(address delegator, address delegatee)
        internal
    {
        address currentDelegate = _delegates[delegator];
        uint256 delegatorBalance = balanceOf(delegator); // balance of underlying KPs (not scaled);
        _delegates[delegator] = delegatee;

        emit DelegateChanged(delegator, currentDelegate, delegatee);

        _moveDelegates(currentDelegate, delegatee, delegatorBalance);
    }

    function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
        if (srcRep != dstRep && amount > 0) {
            if (srcRep != address(0)) {
                // decrease old representative
                uint32 srcRepNum = numCheckpoints[srcRep];
                uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
                uint256 srcRepNew = srcRepOld.sub(amount);
                _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
            }

            if (dstRep != address(0)) {
                // increase new representative
                uint32 dstRepNum = numCheckpoints[dstRep];
                uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
                uint256 dstRepNew = dstRepOld.add(amount);
                _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
            }
        }
    }

    function _writeCheckpoint(
        address delegatee,
        uint32 nCheckpoints,
        uint256 oldVotes,
        uint256 newVotes
    )
        internal
    {
        uint32 blockNumber = safe32(block.number, "KP::_writeCheckpoint: block number exceeds 32 bits");

        if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
            checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
        } else {
            checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
            numCheckpoints[delegatee] = nCheckpoints + 1;
        }

        emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
    }

    function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
        require(n < 2**32, errorMessage);
        return uint32(n);
    }

    function getChainId() internal pure returns (uint) {
        uint256 chainId;
        assembly { chainId := chainid() }
        return chainId;
    }
}

File 2 of 11 : BEP20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.4.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "./IBEP20.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/Address.sol";

/**
 * @dev Implementation of the {IBEP20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {BEP20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-BEP20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of BEP20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IBEP20-approve}.
 */
contract BEP20 is Context, IBEP20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name, string memory symbol) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external override view returns (address) {
        return owner();
    }

    /**
     * @dev Returns the token name.
     */
    function name() public override view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the token decimals.
     */
    function decimals() public override view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev Returns the token symbol.
     */
    function symbol() public override view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {BEP20-totalSupply}.
     */
    function totalSupply() public override view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {BEP20-balanceOf}.
     */
    function balanceOf(address account) public override view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {BEP20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {BEP20-allowance}.
     */
    function allowance(address owner, address spender) public override view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {BEP20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {BEP20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {BEP20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(amount, "BEP20: transfer amount exceeds allowance")
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {BEP20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {BEP20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero")
        );
        return true;
    }

    /**
     * @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
     * the total supply.
     *
     * Requirements
     *
     * - `msg.sender` must be the token owner
     */
    function mint(uint256 amount) public onlyOwner returns (bool) {
        _mint(_msgSender(), amount);
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "BEP20: transfer from the zero address");
        require(recipient != address(0), "BEP20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "BEP20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal {
        require(account != address(0), "BEP20: burn from the zero address");

        _balances[account] = _balances[account].sub(amount, "BEP20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal {
        require(owner != address(0), "BEP20: approve from the zero address");
        require(spender != address(0), "BEP20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(
            account,
            _msgSender(),
            _allowances[account][_msgSender()].sub(amount, "BEP20: burn amount exceeds allowance")
        );
    }
}

File 3 of 11 : IBEP20.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.4.0;

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address _owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 4 of 11 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 5 of 11 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

File 6 of 11 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 7 of 11 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 8 of 11 : 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 9 of 11 : 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 10 of 11 : IUniswapV2Router01.sol
pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

File 11 of 11 : IUniswapV2Router02.sol
pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

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