Contract 0xA37e3b6962de67362325ff5a44fF4414D617A215 2

 
 
Txn Hash Method
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Value [Txn Fee]
0x9deaf849c2183aef1e4b64b7654f42f55f481cfca635b538d6c7095c7189229eDeposit119704622021-10-21 17:25:0246 mins ago0xf56322b28c8e4f965bcf9e42693e088ca8517c10 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00159471
0x05a0bce2ef71db09c7883a096a34606ce7447365cda76f9e5ee486cf637b035fWithdraw119704582021-10-21 17:24:5046 mins ago0xb5ab3adc18c17f52df4b9cc7e9b48332cfbfb154 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001393865
0xe5413c8cd42b5bf2788ce26f0f377acadf35e5175d049765a80d0f90f182eadaClaim119704302021-10-21 17:23:2647 mins ago0xf56322b28c8e4f965bcf9e42693e088ca8517c10 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002455485
0x87cfc897f9fda013c99468e7b2f453572dbc37241f4a1fd6a41be163fa86eb4dDeposit119701292021-10-21 17:08:231 hr 2 mins ago0xdbec81b4eab0b5234dbd9ff7c456bf750d7a9086 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00162689
0xe905d8e5f0ca3c360b70d61cd5dfa7bd51b32cd0c8b3996630073fe01c76558dDeposit119699312021-10-21 16:58:291 hr 12 mins ago0x907b936ea21482166ccf4e80a122fdbbdc21c16e IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00162689
0x5cd7c440951088e54fe3c9c292beb12449fb4e52e06c669a76e0b39f70e711c3Claim119697862021-10-21 16:51:141 hr 19 mins ago0xbef1fefe4bb6dda516e9af3a3f793d182cf053bc IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002401485
0x136b8044f42569da1d08f0a7e6f2161c312b1292cb2f0b9762768ea421430e8cDeposit119696702021-10-21 16:45:261 hr 25 mins ago0x47cd5987ba951b7d6de3cedd78538bb7131f337d IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00162695
0xc3b3066efc4f2721e46854ec1d269a190c268963279b4a6df5f6c6a57fe4b24aWithdraw119687612021-10-21 15:58:472 hrs 12 mins ago0x8582a91fb1953525528b5d738badd8af4aeb302c IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001468805
0x3b6f1671a01ff84006d02566499d4556fbec606549f7403b6815d25d72682d70Withdraw119686752021-10-21 15:54:292 hrs 16 mins ago0xbef1fefe4bb6dda516e9af3a3f793d182cf053bc IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001543805
0x0ed1c1391d1474c3d33178e5f5b83a81df8031d1ef901cd43c0fea00c0b04a17Deposit119686682021-10-21 15:54:082 hrs 16 mins ago0x079bf7f27bece3da61536efc9fc230dac1807a57 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00162689
0xa6f06678912e47b50362392c2cffa6b1f323c5669459d0384c4c634d1bd21c64Deposit119685762021-10-21 15:49:262 hrs 21 mins ago0x9351c46396228035e56aa74074a97ae33e886c0e IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00162695
0xd52a1cedeab35e7c1b57106ccb04d1a5c87c873f849aede53c5b110933cf1eeaDeposit119680362021-10-21 15:21:272 hrs 49 mins ago0xec657b12f4aa1c453167a6bb89a220081b106078 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00159471
0x614addfcf2fdda1fac98f5fd0e0d22363fde0b2d5d1ed4730bc2c57f5a70ab0eClaim119680252021-10-21 15:20:542 hrs 50 mins ago0xec657b12f4aa1c453167a6bb89a220081b106078 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002401485
0x554f72821c8645ecb1be4da733f04e4da2b19e227d1f3b03db3712995c9b521dWithdraw119679532021-10-21 15:17:072 hrs 53 mins ago0x66d5810135d2dcc18ff729f9d3af6574e2915cdf IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001393865
0xdb8aa676deaf7252b101f846033784dad1b05b9e13943bc504cf9b53c230fff3Claim119679502021-10-21 15:16:562 hrs 54 mins ago0x66d5810135d2dcc18ff729f9d3af6574e2915cdf IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002455485
0x49121286de23119ee447e00ba66bcc574a3ce05b145561cd69604d044f029a8eWithdraw119673882021-10-21 14:48:063 hrs 22 mins ago0x3daaf902bd16bd6be33da689e3431a2eaf37ddb0 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001468805
0xb868a47231c17ba0bf041c3725313025bf770e1f212570b749971284b00189f3Withdraw119671252021-10-21 14:34:573 hrs 36 mins ago0xbe18f84532d8f7fb6d7919401c0096f3e257db8b IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001318865
0xd0d3fd5bf00b500acba8f1247265c93b4279567c66c912225b859145686d271eWithdraw119668012021-10-21 14:15:363 hrs 55 mins ago0x21b2923d6689c8eb7a3d2592cc5ed380e2875aa6 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001393805
0x059938103c9cf317a0eb31004477f45b71e8f08c176ba90f7571ee91728b03e2Claim119667922021-10-21 14:14:593 hrs 56 mins ago0x21b2923d6689c8eb7a3d2592cc5ed380e2875aa6 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002401485
0x484018aa0a22f3edf54d21f2562c55bfb873ddc96435d7ba91739f79fd7b88b8Claim119663972021-10-21 13:53:164 hrs 17 mins ago0xe81919ca447f4dfce8da440247f5768ca051bdea IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00238457
0xc13275916791847e47af1b26745c055ac41ba8a073e7e92db5dcedd76aa21a06Withdraw119663912021-10-21 13:52:564 hrs 18 mins ago0xe81919ca447f4dfce8da440247f5768ca051bdea IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001393865
0x75cbea47bb283fa3d09860d8f11fcb8277618fb3ebb7c124119e3654fd7af973Withdraw119660142021-10-21 13:32:464 hrs 38 mins ago0x49de9ec7e35015799724897832c3c75ab78c55b3 IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001318865
0x892583500f1ec7e7a6c24395c16c36ec67f53324ba55a81e01574f517ed16090Deposit119659912021-10-21 13:31:374 hrs 39 mins ago0xefc5ff84594ebf147dceaeb5c41079672cf0d85c IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.00151971
0xb67a9c5869843520c1e1e3bf61849208b9043f60574bbee84b7226b08e781641Withdraw119659382021-10-21 13:28:584 hrs 42 mins ago0x6de4f3ce9c5df5b4137f3d9a7c31548f0576b9cd IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.001393865
0x009b8595387af1453c3c5027282757f890b6075a3f783159ad40c839516ff376Claim119658972021-10-21 13:26:524 hrs 44 mins ago0x6de4f3ce9c5df5b4137f3d9a7c31548f0576b9cd IN  0xa37e3b6962de67362325ff5a44ff4414d617a2150 BNB0.002455485
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0xc5351bea147dc3168e1f1147e1d969bfc9cb9f0ddc0d3631101688e425291b2873319752021-05-11 22:42:11162 days 19 hrs ago 0xa37e3b6962de67362325ff5a44ff4414d617a215  Contract Creation0 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
TrustPadStaking

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 : StakingTreasury.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

contract StakingTreasury is Ownable {
    function allowClaiming(IERC20 _rewardToken) external onlyOwner {
        _rewardToken.approve(this.owner(), 100000000 ether);
    }
}

File 2 of 7 : TrustPadStaking.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./StakingTreasury.sol";

contract TrustPadStaking is Ownable {
    using SafeERC20 for IERC20;

    struct UserInfo {
        uint256 amount;
        uint256 rewardDebt;
        uint256 pendingRewards;
    }

    struct PoolInfo {
        IERC20 stakingToken;
        uint256 lastRewardBlock;
        uint256 accRewardPerShare;
    }

    IERC20 public rewardToken;
    uint256 public rewardPerBlock = 1 * 1e9; // 1 token
    uint256 public divider = 1e12;

    // Keeps reward tokens
    StakingTreasury public treasury;

    // base 1000, value * % / 100
    uint256 public feePercent = 0;
    uint256 public collectedFees;

    PoolInfo public liquidityMining;
    mapping(address => UserInfo) public userInfo;

    event Deposit(address indexed user, uint256 amount);
    event Withdraw(address indexed user, uint256 amount);
    event Claim(address indexed user, uint256 amount);

    constructor() {
        treasury = new StakingTreasury();
    }

    function setDivider(uint256 _divider) external onlyOwner {
        divider = _divider;
    }

    function setPoolInfo(IERC20 _rewardToken, IERC20 _stakingToken, uint256 _divider) external onlyOwner {
        require(address(rewardToken) == address(0) && address(liquidityMining.stakingToken) == address(0), 'Token is already set');
        divider = _divider;
        rewardToken = _rewardToken;
        liquidityMining = PoolInfo({stakingToken : _stakingToken, lastRewardBlock : 0, accRewardPerShare : 0});
        treasury.allowClaiming(_rewardToken);
    }

    function startMining() external onlyOwner {
        require(liquidityMining.lastRewardBlock == 0, 'Mining already started');
        liquidityMining.lastRewardBlock = block.number;
    }

    function pendingRewards(address _user) external view returns (uint256) {
        if (liquidityMining.lastRewardBlock == 0 || block.number < liquidityMining.lastRewardBlock) {
            return 0;
        }

        UserInfo storage user = userInfo[_user];
        uint256 accRewardPerShare = liquidityMining.accRewardPerShare;
        uint256 stakingTokenSupply = liquidityMining.stakingToken.balanceOf(address(this));

        if (block.number > liquidityMining.lastRewardBlock && stakingTokenSupply != 0) {
            uint256 perBlock = rewardPerBlock;
            uint256 multiplier = block.number - liquidityMining.lastRewardBlock;
            uint256 reward = multiplier * perBlock;
            accRewardPerShare = accRewardPerShare + (reward * divider / stakingTokenSupply);
        }

        return (user.amount * accRewardPerShare / divider) - user.rewardDebt + user.pendingRewards;
    }

    function updatePool() internal {
        require(liquidityMining.lastRewardBlock > 0 && block.number >= liquidityMining.lastRewardBlock, 'Mining not yet started');
        if (block.number <= liquidityMining.lastRewardBlock) {
            return;
        }
        uint256 stakingTokenSupply = liquidityMining.stakingToken.balanceOf(address(this));
        if (stakingTokenSupply == 0) {
            liquidityMining.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = block.number - liquidityMining.lastRewardBlock;
        uint256 tokensReward = multiplier * rewardPerBlock;
        liquidityMining.accRewardPerShare = liquidityMining.accRewardPerShare + (tokensReward * divider / stakingTokenSupply);
        liquidityMining.lastRewardBlock = block.number;
    }

    function deposit(uint256 amount) external {
        UserInfo storage user = userInfo[msg.sender];
        updatePool();

        uint256 accRewardPerShare = liquidityMining.accRewardPerShare;

        if (user.amount > 0) {
            uint256 pending = (user.amount * accRewardPerShare / divider) - user.rewardDebt;
            if (pending > 0) {
                user.pendingRewards = user.pendingRewards + pending;
            }
        }
        if (amount > 0) {
            liquidityMining.stakingToken.safeTransferFrom(address(msg.sender), address(this), amount);

            if (feePercent > 0) {
                uint256 fee = amount * feePercent / 1000;
                amount = amount - fee;
                collectedFees = collectedFees + fee;
            }

            user.amount = user.amount + amount;
        }
        user.rewardDebt = user.amount * accRewardPerShare / divider;
        emit Deposit(msg.sender, amount);
    }

    function withdraw(uint256 amount) external {
        UserInfo storage user = userInfo[msg.sender];
        require(user.amount >= amount, "Withdrawing more than you have!");
        updatePool();

        uint256 accRewardPerShare = liquidityMining.accRewardPerShare;

        uint256 pending = (user.amount * accRewardPerShare / divider) - user.rewardDebt;
        if (pending > 0) {
            user.pendingRewards = user.pendingRewards + pending;
        }
        if (amount > 0) {
            user.amount = user.amount - amount;

            if (feePercent > 0) {
                uint256 fee = amount * feePercent / 1000;
                amount = amount - fee;
                collectedFees = collectedFees + fee;
            }

            liquidityMining.stakingToken.safeTransfer(address(msg.sender), amount);
        }
        user.rewardDebt = user.amount * accRewardPerShare / divider;
        emit Withdraw(msg.sender, amount);
    }

    function claim() external {
        UserInfo storage user = userInfo[msg.sender];
        updatePool();

        uint256 accRewardPerShare = liquidityMining.accRewardPerShare;

        uint256 pending = (user.amount * accRewardPerShare / divider) - user.rewardDebt;
        if (pending > 0 || user.pendingRewards > 0) {
            user.pendingRewards = user.pendingRewards + pending;
            uint256 claimedAmount = safeRewardTransfer(msg.sender, user.pendingRewards);
            emit Claim(msg.sender, claimedAmount);
            user.pendingRewards = user.pendingRewards - claimedAmount;
        }
        user.rewardDebt = user.amount * accRewardPerShare / divider;
    }

    function safeRewardTransfer(address to, uint256 amount) internal returns (uint256) {
        uint256 balance = rewardToken.balanceOf(address(treasury));
        require(amount > 0, 'Reward amount must be more than zero');
        require(balance > 0, 'Not enough reward tokens for transfer');
        if (amount > balance) {
            rewardToken.safeTransferFrom(address(treasury), to, balance);
            return balance;
        }

        rewardToken.safeTransferFrom(address(treasury), to, amount);
        return amount;
    }

    function setRewardPerBlock(uint256 _rewardPerBlock) external onlyOwner {
        require(_rewardPerBlock > 0, "Reward per block should be greater than 0");
        rewardPerBlock = _rewardPerBlock;
    }

    function setFee(uint256 fee) external onlyOwner {
        require(fee >= 0, 'Fee is too small');
        require(fee <= 50, 'Fee is too big');
        feePercent = fee;
    }

    function withdrawFees(address payable withdrawalAddress) external onlyOwner {
        liquidityMining.stakingToken.safeTransfer(withdrawalAddress, collectedFees);
        collectedFees = 0;
    }
}

File 3 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 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

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claim","type":"event"},{"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":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":"Withdraw","type":"event"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"collectedFees","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":[],"name":"divider","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feePercent","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"liquidityMining","outputs":[{"internalType":"contract IERC20","name":"stakingToken","type":"address"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accRewardPerShare","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"pendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_divider","type":"uint256"}],"name":"setDivider","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fee","type":"uint256"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_rewardToken","type":"address"},{"internalType":"contract IERC20","name":"_stakingToken","type":"address"},{"internalType":"uint256","name":"_divider","type":"uint256"}],"name":"setPoolInfo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardPerBlock","type":"uint256"}],"name":"setRewardPerBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startMining","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"contract StakingTreasury","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"},{"internalType":"uint256","name":"pendingRewards","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"withdrawalAddress","type":"address"}],"name":"withdrawFees","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Gas Used Reward
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