Contract 0xaffd843b548f70cc586cdecb2dd0e85be5349e96 1

 
 
Txn Hash Method
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0x404434609f42c51395d0ce15c03be706fd463ebbfdaf24140566a41ba131d068Withdraw109303072021-09-15 8:03:566 days 21 hrs ago0xe157bd278747bd9d2466cc749a5a3d0210c523c2 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404905
0x7942354d2531163acd0bad677bfd3ef38f697ee6a20f56ce34ec73155663703dDeposit109303032021-09-15 8:03:446 days 21 hrs ago0xe157bd278747bd9d2466cc749a5a3d0210c523c2 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00043827
0xe58df4cd0ec1add501e0651e15bf193885f6c81d3ef409468d39ba15c2400e6dWithdraw108348682021-09-12 0:23:5410 days 4 hrs ago0xa51860e18657c9f3402ffbc9f8d922d3177df297 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404965
0xb44cdaf67e414af57811a321f1e9354ae0db320805b8141a5aa13982a6b95bf0Deposit108348652021-09-12 0:23:4510 days 4 hrs ago0xa51860e18657c9f3402ffbc9f8d922d3177df297 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00043827
0xd8ef95be4286a33504800972b725bef1851da3d4a09e3c192954412f6e11051cWithdraw107372012021-09-08 14:06:1513 days 14 hrs ago0xfb401a4b2643378ed6c35d6911ae4255fe3ea299 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00060431
0xdceaef07c6fe67a573af94829e698278a1ffdeb227b8d5235c51c71e8fd73e1bWithdraw107366102021-09-08 13:36:4013 days 15 hrs ago0xd4a96b913988312dc388a23e74c932bdb318bede IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00060425
0xaa9224166afbe56b32dc2263a38fbb358f6c355479e33fda131d2206ab256655Withdraw106775322021-09-06 11:35:2215 days 17 hrs ago0xf135c68855004d2c44d4384fe91e7180f199c516 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00052925
0xeace455787e5189e36ff5dd9d41a26540e806a95da3d8de68ba3c56859e84cd2Withdraw106596682021-09-05 20:40:4316 days 8 hrs ago0x739a4932664b777f03ac90f15e6b4f20d42338e3 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404965
0xf4425b386101a625731c77fa5f61db8c8483c550a81f000584d084d339c820aeWithdraw106582202021-09-05 19:28:1916 days 9 hrs ago0x56d1c255bdde4ffcd0047d650f092513dbb8ca3d IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404965
0x89b29e2795ca91a351f828d5961a9dc9835e72b7924bbefba668d44058a56104Deposit106582122021-09-05 19:27:5516 days 9 hrs ago0x56d1c255bdde4ffcd0047d650f092513dbb8ca3d IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00036327
0xbfca9c3b6cec3712cc47531f6309aea46cbd1d71358cba26002a2926de6f2ce4Withdraw106187842021-09-04 10:27:5317 days 18 hrs ago0x90e15c74a657ecbe18397e3eafe615aa2ddaf86b IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00052925
0xd2cd8731dc41a9bc2882c37ac11610a64a89d2ae0604acea4dc29ab049622bf2Deposit106069042021-09-04 0:33:5318 days 4 hrs ago0x739a4932664b777f03ac90f15e6b4f20d42338e3 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00043827
0xaa457032307fdd47ec3fa9f4b22df17bd311c7af7dcbe5931cd73d05b2a865f4Withdraw106003502021-09-03 19:05:4118 days 10 hrs ago0x538510b14e29177903017b5534301d592bba3183 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00060425
0x5cf193c112c874021868dd080bebea1ac265382c168df15714cef1c0a5289ff3Withdraw105751352021-09-02 21:43:5419 days 7 hrs ago0xabd7d12c1bd3fc85cab2488e92e54e84d9c9bae1 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404965
0x991fe2f44a1333d748d22da9b8677be2aac084223a79871766f041b65b48f4c2Deposit105750202021-09-02 21:38:0519 days 7 hrs ago0xabd7d12c1bd3fc85cab2488e92e54e84d9c9bae1 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00094815
0x4f7142307e0cf36d145dc9b40194964a27b4d71de978837a59cf8b7626806a28Withdraw105749922021-09-02 21:36:4119 days 7 hrs ago0xabd7d12c1bd3fc85cab2488e92e54e84d9c9bae1 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00060431
0x5a1e4f9bd517e990325fb395e6b92d8b672979bb49752c1acc8d6461f99ced5aWithdraw105661812021-09-02 14:10:3519 days 14 hrs ago0xbf0a18a282228293b18fc29342c3bf6fc6e360d8 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.0005398962
0x700d7cdc4577eacabab66e0531781f98870cb5013a739b1654c03501e793b7b3Withdraw105627492021-09-02 11:17:2919 days 17 hrs ago0x2e1eb77a7d02662d4552b5788d91a74f27888fc6 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000566951
0xf9ee46ea30dcf1c7c58b862f5ab4337cbbbf64e64425ebd37d64a53e629d80b6Withdraw105627222021-09-02 11:16:0819 days 17 hrs ago0xb327df59edb3a75814bd0277f5f7b0acc6474067 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00052925
0x32f16bb55689e60c758a62b9859bcec1bdcaa2eb88a8f79e61d8d9d822d54aa2Deposit105626982021-09-02 11:14:5619 days 17 hrs ago0x2e1eb77a7d02662d4552b5788d91a74f27888fc6 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000525924
0x094dfbfdf688e8afefd07f38155d0443cb4f6ad88c11d2d4dcb22952b849df29Withdraw105576942021-09-02 7:03:3619 days 22 hrs ago0x09c9af8aeff956844252e93c0ffca71de5bf5a54 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404905
0xa9c0449bd3d6154b8cc192537163e686ac5d641de546b356e06233e351bf1c8cDeposit105576882021-09-02 7:03:1819 days 22 hrs ago0x09c9af8aeff956844252e93c0ffca71de5bf5a54 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00043827
0x522ddfd2b61a28871c48d553ba82a5e48404282be359ac9878f0a1daa51304bfWithdraw105522882021-09-02 2:30:2620 days 2 hrs ago0x4c03a6acd61438ee812cb9ceaf734ca1c224ef36 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404965
0x7160eb99605fa74c72fc5324516b5c5b3e41e45aba401d7a26fd0b2cbfcdb0c0Deposit105522792021-09-02 2:29:5920 days 2 hrs ago0x4c03a6acd61438ee812cb9ceaf734ca1c224ef36 IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.00043827
0x5250396da0945f020cebed2a1857a7f5bd511caec208dbda623aa7509cf84d8dWithdraw105317692021-09-01 9:09:4320 days 19 hrs ago0x511e675011856fa5c751de284f7a8046c5e7c78d IN  0xaffd843b548f70cc586cdecb2dd0e85be5349e960 BNB0.000404905
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x1851a14b9b6bcd55b57da6bfd11f7fb5ae8c3d01

Contract Name:
BEP20RewardApeV3

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 7 : BEP20RewardApeV3.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/*
 * ApeSwapFinance 
 * App:             https://apeswap.finance
 * Medium:          https://ape-swap.medium.com    
 * Twitter:         https://twitter.com/ape_swap 
 * Telegram:        https://t.me/ape_swap
 * Announcements:   https://t.me/ape_swap_news
 * GitHub:          https://github.com/ApeSwapFinance
 */

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/proxy/utils/Initializable.sol";

contract BEP20RewardApeV3 is Ownable, Initializable {
    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.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. Rewards to distribute per block.
        uint256 lastRewardBlock;  // Last block number that Rewards distribution occurs.
        uint256 accRewardTokenPerShare; // Accumulated Rewards per share, times 1e30. See below.
    }

    // The stake token
    IERC20 public STAKE_TOKEN;
    // The reward token
    IERC20 public REWARD_TOKEN;

    // Reward tokens created per block.
    uint256 public rewardPerBlock;

    // Keep track of number of tokens staked in case the contract earns reflect fees
    uint256 public totalStaked = 0;

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

    event Deposit(address indexed user, uint256 amount);
    event DepositRewards(uint256 amount);
    event Withdraw(address indexed user, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 amount);
    event SkimStakeTokenFees(address indexed user, uint256 amount);
    event LogUpdatePool(uint256 bonusEndBlock, uint256 rewardPerBlock);
    event EmergencyRewardWithdraw(address indexed user, uint256 amount);
    event EmergencySweepWithdraw(address indexed user, IERC20 indexed token, uint256 amount);

    function initialize(
        IERC20 _stakeToken,
        IERC20 _rewardToken,
        uint256 _rewardPerBlock,
        uint256 _startBlock,
        uint256 _bonusEndBlock
    ) external initializer
    {
        STAKE_TOKEN = _stakeToken;
        REWARD_TOKEN = _rewardToken;
        rewardPerBlock = _rewardPerBlock;
        startBlock = _startBlock;
        bonusEndBlock = _bonusEndBlock;

        // staking pool
        poolInfo = PoolInfo({
            lpToken: _stakeToken,
            allocPoint: 1000,
            lastRewardBlock: startBlock,
            accRewardTokenPerShare: 0
        });

        totalAllocPoint = 1000;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {
        if (_to <= bonusEndBlock) {
            return _to - _from;
        } else if (_from >= bonusEndBlock) {
            return 0;
        } else {
            return bonusEndBlock - _from;
        }
    }

    /// @param  _bonusEndBlock The block when rewards will end
    function setBonusEndBlock(uint256 _bonusEndBlock) external onlyOwner {
        require(_bonusEndBlock > bonusEndBlock, 'new bonus end block must be greater than current');
        bonusEndBlock = _bonusEndBlock;
        emit LogUpdatePool(bonusEndBlock, rewardPerBlock);
    }

    // View function to see pending Reward on frontend.
    function pendingReward(address _user) external view returns (uint256) {
        UserInfo storage user = userInfo[_user];
        uint256 accRewardTokenPerShare = poolInfo.accRewardTokenPerShare;
        if (block.number > poolInfo.lastRewardBlock && totalStaked != 0) {
            uint256 multiplier = getMultiplier(poolInfo.lastRewardBlock, block.number);
            uint256 tokenReward = multiplier * rewardPerBlock * poolInfo.allocPoint / totalAllocPoint;
            accRewardTokenPerShare = accRewardTokenPerShare + (tokenReward * 1e30 / totalStaked);
        }
        return user.amount * accRewardTokenPerShare / 1e30 - user.rewardDebt;
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool() public {
        if (block.number <= poolInfo.lastRewardBlock) {
            return;
        }
        if (totalStaked == 0) {
            poolInfo.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(poolInfo.lastRewardBlock, block.number);
        uint256 tokenReward = multiplier * rewardPerBlock * poolInfo.allocPoint / totalAllocPoint;
        poolInfo.accRewardTokenPerShare = poolInfo.accRewardTokenPerShare + (tokenReward * 1e30 / totalStaked);
        poolInfo.lastRewardBlock = block.number;
    }


    /// Deposit staking token into the contract to earn rewards.
    /// @dev Since this contract needs to be supplied with rewards we are
    ///  sending the balance of the contract if the pending rewards are higher
    /// @param _amount The amount of staking tokens to deposit
    function deposit(uint256 _amount) public {
        UserInfo storage user = userInfo[msg.sender];
        uint256 finalDepositAmount = 0;
        updatePool();
        if (user.amount > 0) {
            uint256 pending = user.amount * poolInfo.accRewardTokenPerShare / 1e30 - user.rewardDebt;
            if(pending > 0) {
                uint256 currentRewardBalance = rewardBalance();
                if(currentRewardBalance > 0) {
                    if(pending > currentRewardBalance) {
                        safeTransferReward(address(msg.sender), currentRewardBalance);
                    } else {
                        safeTransferReward(address(msg.sender), pending);
                    }
                }
            }
        }
        if (_amount > 0) {
            uint256 preStakeBalance = STAKE_TOKEN.balanceOf(address(this));
            poolInfo.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            finalDepositAmount = STAKE_TOKEN.balanceOf(address(this)) - preStakeBalance;
            user.amount = user.amount + finalDepositAmount;
            totalStaked = totalStaked + finalDepositAmount;
        }
        user.rewardDebt = user.amount * poolInfo.accRewardTokenPerShare / 1e30;

        emit Deposit(msg.sender, finalDepositAmount);
    }

    /// Withdraw rewards and/or staked tokens. Pass a 0 amount to withdraw only rewards
    /// @param _amount The amount of staking tokens to withdraw
    function withdraw(uint256 _amount) public {
        UserInfo storage user = userInfo[msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool();
        uint256 pending = user.amount * poolInfo.accRewardTokenPerShare / 1e30 - user.rewardDebt;
        if(pending > 0) {
            uint256 currentRewardBalance = rewardBalance();
            if(currentRewardBalance > 0) {
                if(pending > currentRewardBalance) {
                    safeTransferReward(address(msg.sender), currentRewardBalance);
                } else {
                    safeTransferReward(address(msg.sender), pending);
                }
            }
        }
        if(_amount > 0) {
            user.amount = user.amount - _amount;
            poolInfo.lpToken.safeTransfer(address(msg.sender), _amount);
            totalStaked = totalStaked - _amount;
        }

        user.rewardDebt = user.amount * poolInfo.accRewardTokenPerShare / 1e30;

        emit Withdraw(msg.sender, _amount);
    }

    /// Obtain the reward balance of this contract
    /// @return wei balace of conract
    function rewardBalance() public view returns (uint256) {
        uint256 balance = REWARD_TOKEN.balanceOf(address(this));
        if (STAKE_TOKEN == REWARD_TOKEN)
            return balance - totalStaked;
        return balance;
    }

    // Deposit Rewards into contract
    function depositRewards(uint256 _amount) external {
        require(_amount > 0, 'Deposit value must be greater than 0.');
        REWARD_TOKEN.safeTransferFrom(address(msg.sender), address(this), _amount);
        emit DepositRewards(_amount);
    }

    /// @param _to address to send reward token to
    /// @param _amount value of reward token to transfer
    function safeTransferReward(address _to, uint256 _amount) internal {
        REWARD_TOKEN.safeTransfer(_to, _amount);
    }

    /// @dev Obtain the stake balance of this contract
    function totalStakeTokenBalance() public view returns (uint256) {
        if (STAKE_TOKEN == REWARD_TOKEN)
            return totalStaked;
        return STAKE_TOKEN.balanceOf(address(this));
    }

    /// @dev Obtain the stake token fees (if any) earned by reflect token
    function getStakeTokenFeeBalance() public view returns (uint256) {
        return STAKE_TOKEN.balanceOf(address(this)) - totalStaked;
    }

    /* Admin Functions */

    /// @param _rewardPerBlock The amount of reward tokens to be given per block
    function setRewardPerBlock(uint256 _rewardPerBlock) external onlyOwner {
        rewardPerBlock = _rewardPerBlock;
        emit LogUpdatePool(bonusEndBlock, rewardPerBlock);
    }

        /// @dev Remove excess stake tokens earned by reflect fees
    function skimStakeTokenFees() external onlyOwner {
        uint256 stakeTokenFeeBalance = getStakeTokenFeeBalance();
        STAKE_TOKEN.safeTransfer(msg.sender, stakeTokenFeeBalance);
        emit SkimStakeTokenFees(msg.sender, stakeTokenFeeBalance);
    }

    /* Emergency Functions */

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw() external {
        UserInfo storage user = userInfo[msg.sender];
        poolInfo.lpToken.safeTransfer(address(msg.sender), user.amount);
        totalStaked = totalStaked - user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        emit EmergencyWithdraw(msg.sender, user.amount);
    }

    // Withdraw reward. EMERGENCY ONLY.
    function emergencyRewardWithdraw(uint256 _amount) external onlyOwner {
        require(_amount <= rewardBalance(), 'not enough rewards');
        // Withdraw rewards
        safeTransferReward(address(msg.sender), _amount);
        emit EmergencyRewardWithdraw(msg.sender, _amount);
    }

    /// @notice A public function to sweep accidental BEP20 transfers to this contract.
    ///   Tokens are sent to owner
    /// @param token The address of the BEP20 token to sweep
    function sweepToken(IERC20 token) external onlyOwner {
        require(address(token) != address(STAKE_TOKEN), "can not sweep stake token");
        uint256 balance = token.balanceOf(address(this));
        token.transfer(msg.sender, balance);
        emit EmergencySweepWithdraw(msg.sender, token, balance);
    }

}

File 2 of 7 : Ownable.sol
// 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 () {
        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 3 of 7 : Initializable.sol
// SPDX-License-Identifier: MIT

// solhint-disable-next-line compiler-version
pragma solidity ^0.8.0;

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

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {

    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

File 4 of 7 : IERC20.sol
// 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);
}

File 5 of 7 : SafeERC20.sol
// 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'
        // solhint-disable-next-line max-line-length
        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
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 6 of 7 : Address.sol
// 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;
        // 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 7 : Context.sol
// 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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

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

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"DepositRewards","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyRewardWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"contract IERC20","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencySweepWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"bonusEndBlock","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardPerBlock","type":"uint256"}],"name":"LogUpdatePool","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":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"SkimStakeTokenFees","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"REWARD_TOKEN","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"STAKE_TOKEN","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bonusEndBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"depositRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"emergencyRewardWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","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":"getStakeTokenFeeBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_stakeToken","type":"address"},{"internalType":"contract IERC20","name":"_rewardToken","type":"address"},{"internalType":"uint256","name":"_rewardPerBlock","type":"uint256"},{"internalType":"uint256","name":"_startBlock","type":"uint256"},{"internalType":"uint256","name":"_bonusEndBlock","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"pendingReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"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":"accRewardTokenPerShare","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_bonusEndBlock","type":"uint256"}],"name":"setBonusEndBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardPerBlock","type":"uint256"}],"name":"setRewardPerBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"skimStakeTokenFees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalStakeTokenBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalStaked","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":[],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"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":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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