Contract 0x85A025BA2C054117Bc53666342F8A0Be08C38A9F 1

/*
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▐█· ▐█▌▐▀▀▪▄▄▀▀▀█▄ ▐█.▪▐▀▀▄ █▌▐█▌██ ▄▄ ▐█.▪▐█· ▄█▀▄ ▐█▐▐▌
██. ██ ▐█▄▄▌▐█▄▪▐█ ▐█▌·▐█•█▌▐█▄█▌▐███▌ ▐█▌·▐█▌▐█▌.▐▌██▐█▌
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 */

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "./DestructionTokenV3.sol";

// MasterChef is the master of Destruction. He can make Destruction and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once DESTRUCTION is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract MasterChefV3 is Ownable, ReentrancyGuard {
    using SafeERC20 for IERC20;

    // Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of DESTRUCTIONs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accDestructionPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accDestructionPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. DESTRUCTIONs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that DESTRUCTIONs distribution occurs.
        uint256 accDestructionPerShare;   // Accumulated DESTRUCTIONs per share, times 1e18. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
        uint256 lpSupply;
    }

    uint256 public constant destructionMaximumSupply = 5 * (10 ** 3) * (10 ** 18); // 5000 destruction
    uint256 public constant MAX_EMISSION_RATE = 10 * (10 ** 18); // 10
    // The DESTRUCTION TOKEN!
    DestructionTokenV3 public immutable destruction;
    // DESTRUCTION tokens created per block.
    uint256 public destructionPerBlock;
    // Deposit Fee address
    address public feeAddress;

    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when DESTRUCTION mining starts.
    uint256 public startBlock;
    // The block number when DESTRUCTION mining ends.
    uint256 public emmissionEndBlock = type(uint256).max;

    event addPool(uint256 indexed pid, address lpToken, uint256 allocPoint, uint256 depositFeeBP);
    event setPool(uint256 indexed pid, address lpToken, uint256 allocPoint, uint256 depositFeeBP);
    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event SetEmissionRate(address indexed caller, uint256 previousAmount, uint256 newAmount);
    event SetFeeAddress(address indexed user, address indexed newAddress);
    event SetStartBlock(uint256 newStartBlock);
    
    constructor(
        DestructionTokenV3 _destruction,
        address _feeAddress,
        uint256 _destructionPerBlock,
        uint256 _startBlock
    ) {
        require(_feeAddress != address(0), "!nonzero");

        destruction = _destruction;
        feeAddress = _feeAddress;
        destructionPerBlock = _destructionPerBlock;
        startBlock = _startBlock;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    mapping(IERC20 => bool) public poolExistence;
    modifier nonDuplicated(IERC20 _lpToken) {
        require(!poolExistence[_lpToken], "nonDuplicated: duplicated");
        _;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    function add(uint256 _allocPoint, IERC20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) external onlyOwner nonDuplicated(_lpToken) {
        // Make sure the provided token is ERC20
        _lpToken.balanceOf(address(this));

        require(_depositFeeBP <= 401, "add: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint + _allocPoint;
        poolExistence[_lpToken] = true;

        poolInfo.push(PoolInfo({
        lpToken : _lpToken,
        allocPoint : _allocPoint,
        lastRewardBlock : lastRewardBlock,
        accDestructionPerShare : 0,
        depositFeeBP : _depositFeeBP,
        lpSupply: 0
        }));

        emit addPool(poolInfo.length - 1, address(_lpToken), _allocPoint, _depositFeeBP);
    }

    // Update the given pool's DESTRUCTION allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) external onlyOwner {
        require(_depositFeeBP <= 401, "set: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint - poolInfo[_pid].allocPoint + _allocPoint;
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;

        emit setPool(_pid, address(poolInfo[_pid].lpToken), _allocPoint, _depositFeeBP);
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {
        // As we set the multiplier to 0 here after emmissionEndBlock
        // deposits aren't blocked after farming ends.
        if (_from > emmissionEndBlock)
            return 0;
        if (_to > emmissionEndBlock)
            return emmissionEndBlock - _from;
        else
            return _to - _from;
    }

    // View function to see pending DESTRUCTIONs on frontend.
    function pendingDestruction(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accDestructionPerShare = pool.accDestructionPerShare;
        if (block.number > pool.lastRewardBlock && pool.lpSupply != 0 && totalAllocPoint > 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 destructionReward = (multiplier * destructionPerBlock * pool.allocPoint) / totalAllocPoint;
            accDestructionPerShare = accDestructionPerShare + ((destructionReward * 1e18) / pool.lpSupply);
        }

        return ((user.amount * accDestructionPerShare) /  1e18) - user.rewardDebt;
    }


    // Update reward variables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }

        if (pool.lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }

        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 destructionReward = (multiplier * destructionPerBlock * pool.allocPoint) / totalAllocPoint;

        // This shouldn't happen, but just in case we stop rewards.
        if (destruction.totalSupply() > destructionMaximumSupply)
            destructionReward = 0;
        else if ((destruction.totalSupply() + destructionReward) > destructionMaximumSupply)
            destructionReward = destructionMaximumSupply - destruction.totalSupply();

        if (destructionReward > 0)
            destruction.mint(address(this), destructionReward);

        // The first time we reach Destruction max supply we solidify the end of farming.
        if (destruction.totalSupply() >= destructionMaximumSupply && emmissionEndBlock == type(uint256).max)
            emmissionEndBlock = block.number;

        pool.accDestructionPerShare = pool.accDestructionPerShare + ((destructionReward * 1e18) / pool.lpSupply);
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for DESTRUCTION allocation.
    function deposit(uint256 _pid, uint256 _amount) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = ((user.amount * pool.accDestructionPerShare) / 1e18) - user.rewardDebt;
            if (pending > 0) {
                safeDestructionTransfer(msg.sender, pending);
            }
        }
        if (_amount > 0) {
            uint256 balanceBefore = pool.lpToken.balanceOf(address(this));
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            _amount = pool.lpToken.balanceOf(address(this)) - balanceBefore;
            require(_amount > 0, "we dont accept deposits of 0 size");

            if (pool.depositFeeBP > 0) {
                uint256 depositFee = (_amount * pool.depositFeeBP) / 10000;
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount + _amount - depositFee;
                pool.lpSupply = pool.lpSupply + _amount - depositFee;
            } else {
                user.amount = user.amount + _amount;
                pool.lpSupply = pool.lpSupply + _amount;
            }
        }
        user.rewardDebt = (user.amount * pool.accDestructionPerShare) / 1e18;

        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = ((user.amount * pool.accDestructionPerShare) / 1e18) - user.rewardDebt;
        if (pending > 0) {
            safeDestructionTransfer(msg.sender, pending);
        }
        if (_amount > 0) {
            user.amount = user.amount - _amount;
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
            pool.lpSupply = pool.lpSupply - _amount;
        }
        user.rewardDebt = (user.amount * pool.accDestructionPerShare) / 1e18;
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);

        // In the case of an accounting error, we choose to let the user emergency withdraw anyway
        if (pool.lpSupply >=  amount)
            pool.lpSupply = pool.lpSupply - amount;
        else
            pool.lpSupply = 0;

        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

    // Safe destruction transfer function, just in case if rounding error causes pool to not have enough DESTRUCTIONs.
    function safeDestructionTransfer(address _to, uint256 _amount) internal {
        uint256 destructionBal = destruction.balanceOf(address(this));
        bool transferSuccess = false;
        if (_amount > destructionBal) {
            transferSuccess = destruction.transfer(_to, destructionBal);
        } else {
            transferSuccess = destruction.transfer(_to, _amount);
        }
        require(transferSuccess, "safeDestructionTransfer: transfer failed");
    }

    function setFeeAddress(address _feeAddress) external onlyOwner {
        require(_feeAddress != address(0), "!nonzero");
        feeAddress = _feeAddress;
        emit SetFeeAddress(msg.sender, _feeAddress);
    }

    // Update lastRewardBlock variables for all pools.
    function _massUpdateLastRewardBlockPools() internal {
        uint256 length = poolInfo.length;
        for (uint256 _pid = 0; _pid < length; ++_pid) {
            poolInfo[_pid].lastRewardBlock = startBlock;
        }
    }

    function setStartBlock(uint256 _newStartBlock) external onlyOwner {
        require(block.number < startBlock, "cannot change start block if sale has already commenced");
        require(block.number < _newStartBlock, "cannot set start block in the past");
                
        startBlock = _newStartBlock;
        _massUpdateLastRewardBlockPools();

        emit SetStartBlock(startBlock);
    }

    function setEmissionRate(uint256 _destructionPerBlock) external onlyOwner {
        require(_destructionPerBlock > 0);
        require(_destructionPerBlock < MAX_EMISSION_RATE);

        massUpdatePools();
        destructionPerBlock = _destructionPerBlock;
        
        emit SetEmissionRate(msg.sender, destructionPerBlock, _destructionPerBlock);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

/*
·▄▄▄▄  ▄▄▄ ..▄▄ · ▄▄▄▄▄▄▄▄  ▄• ▄▌ ▄▄· ▄▄▄▄▄▪         ▐ ▄ 
██▪ ██ ▀▄.▀·▐█ ▀. •██  ▀▄ █·█▪██▌▐█ ▌▪•██  ██ ▪     •█▌▐█
▐█· ▐█▌▐▀▀▪▄▄▀▀▀█▄ ▐█.▪▐▀▀▄ █▌▐█▌██ ▄▄ ▐█.▪▐█· ▄█▀▄ ▐█▐▐▌
██. ██ ▐█▄▄▌▐█▄▪▐█ ▐█▌·▐█•█▌▐█▄█▌▐███▌ ▐█▌·▐█▌▐█▌.▐▌██▐█▌
▀▀▀▀▀•  ▀▀▀  ▀▀▀▀  ▀▀▀ .▀  ▀ ▀▀▀ ·▀▀▀  ▀▀▀ ▀▀▀ ▀█▄▀▪▀▀ █▪
 */
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";


/*
  TABLE ERROR REFERENCE:
  ERR1: The sender is on the blacklist. Please contact to support.
  ERR2: The recipient is on the blacklist. Please contact to support.
  ERR3: User cannot send more than allowed.
  ERR4: User is not operator.
  ERR5: User is excluded from antibot system.
  ERR6: Bot address is already on the blacklist.
  ERR7: The expiration time has to be greater than 0.
  ERR8: Bot address is not found on the blacklist.
  ERR9: Address cant be 0.
*/

// DestructionToken
contract DestructionTokenV3 is ERC20, Ownable {

    event OperatorTransferred(address indexed previousOperator, address indexed newOperator);
    event TransferTaxRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);
    event HoldingAmountRateUpdated(address indexed operator, uint256 previousRate, uint256 newRate);
    event AntiBotWorkingStatus(address indexed operator, bool previousStatus, bool newStatus);
    event AddBotAddress(address indexed botAddress);
    event RemoveBotAddress(address indexed botAddress);
    event ExcludedOperatorsUpdated(address indexed operatorAddress, bool previousStatus, bool newStatus);
    event ExcludedHoldersUpdated(address indexed holderAddress, bool previousStatus, bool newStatus);
    

    using SafeMath for uint256;

    ///@dev Max transfer amount rate. (default is 3% of total supply)
    uint16 public maxUserTransferAmountRate = 300;
    
    ///@dev Max holding rate. (default is 9% of total supply)
    uint16 public maxUserHoldAmountRate = 900;

    ///@dev Length of blacklist addressess
    uint256 public blacklistLength;
 
    ///@dev Enable|Disable antiBot
    bool public antiBotWorking;
    
    ///@dev Exclude operators from antiBot system
    mapping(address => bool) private _excludedOperatorsFromAntiBot;

    ///@dev Exclude holders from antiBot system
    mapping(address => bool) private _excludedHoldersFromAntiBot;

    ///@dev mapping store blacklist. address=>ExpirationTime 
    mapping(address => uint256) private _blacklist;
    

    address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;
    
    // operator role
    address internal _operator;

    // MODIFIERS
    modifier antiBot(address _sender, address _recipient, uint256 _amount) { 
        //check blacklist
        require(!blacklistCheck(_sender), "ERR1");
        require(!blacklistCheck(_recipient), "ERR2");

        // This code will be disabled after launch and before farming
        if (antiBotWorking){
            // check  if sender|recipient has a tx amount is within the allowed limits
            if (_isNotOperatorExcludedFromAntiBot(_sender)){
                if(_isNotOperatorExcludedFromAntiBot(_recipient))
                    require(_amount <= _maxUserTransferAmount(), "ERR3");
            }
        }
        _;
    }

    modifier onlyOperator() {
        require(_operator == _msgSender(), "ERR4");
        _;
    }
    
    constructor() 
        ERC20('DESTRUCTION', 'DESTRUCTION')
    {
      // Exclude operator addresses, lps, etc from antibot system
        _excludedOperatorsFromAntiBot[msg.sender] = true;
        _excludedOperatorsFromAntiBot[address(0)] = true;
        _excludedOperatorsFromAntiBot[address(this)] = true;
        _excludedOperatorsFromAntiBot[BURN_ADDRESS] = true;

        _operator = _msgSender();
    }
    

    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }
    
    //INTERNALS
    
    /// @dev overrides transfer function to use antibot system
    function _transfer(address _sender, address _recipient, uint256 _amount) internal virtual override antiBot(_sender, _recipient, _amount) {
        // Autodetect is sender is a BOT
        // This code will be disabled after launch and before farming
        if (antiBotWorking){
            // check  if sender|recipient has a tx amount is within the allowed limits
            if (_isNotHolderExcludedFromAntiBot(_sender)){
                if(_isNotOperatorExcludedFromAntiBot(_sender)){
                    if (balanceOf(_sender) > _maxUserHoldAmount()) {
                        _addBotAddressToBlackList(_sender, type(uint256).max);
                        return;
                    }
                }
            }
        }
        
        super._transfer(_sender, _recipient, _amount);
    }

    /// @dev internal function to add address to blacklist.
    function _addBotAddressToBlackList(address _botAddress, uint256 _expirationTime) internal {
        require(_isNotHolderExcludedFromAntiBot(_botAddress), "ERR5");
        require(_isNotOperatorExcludedFromAntiBot(_botAddress), "ERR5");
        require(_blacklist[_botAddress] == 0, "ERR6");
        require(_expirationTime > 0, "ERR7");

        _blacklist[_botAddress] = _expirationTime;
        blacklistLength = blacklistLength.add(1);

        emit AddBotAddress(_botAddress);
    }
    
    ///@dev internal function to remove address from blacklist.
    function _removeBotAddressToBlackList(address _botAddress) internal {
        require(_blacklist[_botAddress] > 0, "ERR8");

        delete _blacklist[_botAddress];
        blacklistLength = blacklistLength.sub(1);

        emit RemoveBotAddress(_botAddress);
    }

    ///@dev Check if the address is excluded from antibot system.
    function _isNotHolderExcludedFromAntiBot(address _userAddress) internal view returns(bool) {
        return(!_excludedHoldersFromAntiBot[_userAddress]);
    }

    ///@dev Check if the address is excluded from antibot system.
    function _isNotOperatorExcludedFromAntiBot(address _userAddress) internal view returns(bool) {
        return(!_excludedOperatorsFromAntiBot[_userAddress]);
    }

    ///@dev Max user transfer allowed
    function _maxUserTransferAmount() internal view returns (uint256) {
        return totalSupply().mul(maxUserTransferAmountRate).div(10000);
    }

    ///@dev Max user Holding allowed
    function _maxUserHoldAmount() internal view returns (uint256) {
        return totalSupply().mul(maxUserHoldAmountRate).div(10000);
    }

    // PUBLICS
 
    ///@dev Max user transfer allowed
    function maxUserTransferAmount() external view returns (uint256) {
        return _maxUserTransferAmount();
    }

    ///@dev Max user Holding allowed
    function maxUserHoldAmount() external view returns (uint256) {
        return _maxUserHoldAmount();
    }

     ///@dev check if the address is in the blacklist or expired
    function blacklistCheck(address botAddress) public view returns(bool){
        if(_blacklist[botAddress] > 0)
            return _blacklist[botAddress] > block.timestamp;
        else 
            return false;
    }
    
    ///@dev check if the address is in the blacklist or not
    function blacklistCheckExpirationTime(address botAddress) public view returns(uint256){
        return _blacklist[botAddress];
    }


    // EXTERNALS

    ///@dev Update operator address status
    function updateOperatorsFromAntiBot(address _operatorAddress, bool _status) external onlyOwner {
        require(_operatorAddress != address(0), "ERR9");

        emit ExcludedOperatorsUpdated(_operatorAddress, _excludedOperatorsFromAntiBot[_operatorAddress], _status);

        _excludedOperatorsFromAntiBot[_operatorAddress] = _status;
    }

    ///@dev Update operator address status
    function updateHoldersFromAntiBot(address _holderAddress, bool _status) external onlyOwner {
        require(_holderAddress != address(0), "ERR9");

        emit ExcludedHoldersUpdated(_holderAddress, _excludedHoldersFromAntiBot[_holderAddress], _status);

        _excludedHoldersFromAntiBot[_holderAddress] = _status;
    }


    ///@dev Update operator address
    function transferOperator(address newOperator) external onlyOperator {
        require(newOperator != address(0), "ERR9");
        
        emit OperatorTransferred(_operator, newOperator);

        _operator = newOperator;
    }

    function operator() external view returns (address) {
        return _operator;
    }

     ///@dev Updates the max holding amount. 
    function updateMaxUserHoldAmountRate(uint16 _maxUserHoldAmountRate) external onlyOwner {
        require(_maxUserHoldAmountRate >= 500);
        require(_maxUserHoldAmountRate <= 10000);
        
        emit TransferTaxRateUpdated(_msgSender(), maxUserHoldAmountRate, _maxUserHoldAmountRate);

        maxUserHoldAmountRate = _maxUserHoldAmountRate;
    }

    ///@dev Updates the max user transfer amount. 
    function updateMaxUserTransferAmountRate(uint16 _maxUserTransferAmountRate) external onlyOwner {
        require(_maxUserTransferAmountRate >= 50);
        require(_maxUserTransferAmountRate <= 10000);
        
        emit HoldingAmountRateUpdated(_msgSender(), maxUserHoldAmountRate, _maxUserTransferAmountRate);

        maxUserTransferAmountRate = _maxUserTransferAmountRate;
    }

    
    ///@dev Update the antiBotWorking status: ENABLE|DISABLE.
    function updateStatusAntiBotWorking(bool _status) external onlyOwner {
        emit AntiBotWorkingStatus(_msgSender(), antiBotWorking, _status);

        antiBotWorking = _status;
    }

     ///@dev Add an address to the blacklist. Only the owner can add. Owner is the address of the Governance contract.
    function addBotAddress(address _botAddress, uint256 _expirationTime) external onlyOwner {
        _addBotAddressToBlackList(_botAddress, _expirationTime);
    }
    
    ///@dev Remove an address from the blacklist. Only the owner can remove. Owner is the address of the Governance contract.
    function removeBotAddress(address botAddress) external onlyOperator {
        _removeBotAddressToBlackList(botAddress);
    }
    
    ///@dev Add multi address to the blacklist. Only the owner can add. Owner is the address of the Governance contract.
    function addBotAddressBatch(address[] memory _addresses, uint256 _expirationTime) external onlyOwner {
        require(_addresses.length > 0);

        for(uint i=0;i<_addresses.length;i++){
            _addBotAddressToBlackList(_addresses[i], _expirationTime);
        }
    }
    
    ///@dev Remove multi address from the blacklist. Only the owner can remove. Owner is the address of the Governance contract.
    function removeBotAddressBatch(address[] memory _addresses) external onlyOperator {
        require(_addresses.length > 0);

        for(uint i=0;i<_addresses.length;i++){
            _removeBotAddressToBlackList(_addresses[i]);
        }
    }

    ///@dev Check if the address is excluded from antibot system.
    function isExcludedOperatorFromAntiBot(address _userAddress) external view returns(bool) {
        return(_excludedOperatorsFromAntiBot[_userAddress]);
    }

    ///@dev Check if the address is excluded from antibot system.
    function isExcludedHolderFromAntiBot(address _userAddress) external view returns(bool) {
        return(_excludedHoldersFromAntiBot[_userAddress]);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^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;
        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");

        (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");

        (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");

        (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");

        (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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
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) {
        unchecked {
            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) {
        unchecked {
            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) {
        unchecked {
            // 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) {
        unchecked {
            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) {
        unchecked {
            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) {
        return a + b;
    }

    /**
     * @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) {
        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) {
        return a * b;
    }

    /**
     * @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.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        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) {
        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) {
        unchecked {
            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.
     *
     * 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) {
        unchecked {
            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) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} 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 {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-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 ERC20 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 {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-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 virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * 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 virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        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 {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + 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 {IERC20-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 virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This 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), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(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:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(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 virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This 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 virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

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

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^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 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) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

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

{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract DestructionTokenV3","name":"_destruction","type":"address"},{"internalType":"address","name":"_feeAddress","type":"address"},{"internalType":"uint256","name":"_destructionPerBlock","type":"uint256"},{"internalType":"uint256","name":"_startBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newAmount","type":"uint256"}],"name":"SetEmissionRate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"SetFeeAddress","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newStartBlock","type":"uint256"}],"name":"SetStartBlock","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"address","name":"lpToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"allocPoint","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"depositFeeBP","type":"uint256"}],"name":"addPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"address","name":"lpToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"allocPoint","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"depositFeeBP","type":"uint256"}],"name":"setPool","type":"event"},{"inputs":[],"name":"MAX_EMISSION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"contract IERC20","name":"_lpToken","type":"address"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"destruction","outputs":[{"internalType":"contract DestructionTokenV3","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"destructionMaximumSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"destructionPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emmissionEndBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_from","type":"uint256"},{"internalType":"uint256","name":"_to","type":"uint256"}],"name":"getMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingDestruction","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"name":"poolExistence","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract IERC20","name":"lpToken","type":"address"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accDestructionPerShare","type":"uint256"},{"internalType":"uint16","name":"depositFeeBP","type":"uint16"},{"internalType":"uint256","name":"lpSupply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_destructionPerBlock","type":"uint256"}],"name":"setEmissionRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeAddress","type":"address"}],"name":"setFeeAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newStartBlock","type":"uint256"}],"name":"setStartBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000ca4992f01b63c7ceb98505946b79d7d8855449f90000000000000000000000000c4b9038f7d01d4413acc1641953856e732c864d000000000000000000000000000000000000000000000000001bd43b15ace8c0000000000000000000000000000000000000000000000000000000000146215c

-----Decoded View---------------
Arg [0] : _destruction (address): 0xca4992f01b63c7ceb98505946b79d7d8855449f9
Arg [1] : _feeAddress (address): 0x0c4b9038f7d01d4413acc1641953856e732c864d
Arg [2] : _destructionPerBlock (uint256): 7833174603000000
Arg [3] : _startBlock (uint256): 21373276

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000ca4992f01b63c7ceb98505946b79d7d8855449f9
Arg [1] : 0000000000000000000000000c4b9038f7d01d4413acc1641953856e732c864d
Arg [2] : 000000000000000000000000000000000000000000000000001bd43b15ace8c0
Arg [3] : 000000000000000000000000000000000000000000000000000000000146215c