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0xeF42f6A62fe8141ef93a712d35d00AF5B781cfA1
 

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Un Stake206416302024-08-30 13:16:116 hrs ago1725023771IN
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Un Stake206394122024-08-30 5:50:2314 hrs ago1724997023IN
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Un Stake206390282024-08-30 4:33:1115 hrs ago1724992391IN
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Un Stake206382892024-08-30 2:03:4718 hrs ago1724983427IN
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Un Stake206355852024-08-29 16:59:2327 hrs ago1724950763IN
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Un Stake206355482024-08-29 16:51:5927 hrs ago1724950319IN
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Un Stake206349242024-08-29 14:46:2329 hrs ago1724942783IN
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Un Stake206347622024-08-29 14:13:5929 hrs ago1724940839IN
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Un Stake206345382024-08-29 13:28:3530 hrs ago1724938115IN
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Stake206340422024-08-29 11:48:4732 hrs ago1724932127IN
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Un Stake206192072024-08-27 10:04:593 days ago1724753099IN
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Un Stake206188012024-08-27 8:43:473 days ago1724748227IN
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Un Stake206184322024-08-27 7:29:353 days ago1724743775IN
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Stake206172112024-08-27 3:23:233 days ago1724729003IN
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Un Stake206172012024-08-27 3:21:233 days ago1724728883IN
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Un Stake206167792024-08-27 1:55:593 days ago1724723759IN
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Un Stake206138492024-08-26 16:05:594 days ago1724688359IN
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Un Stake206137962024-08-26 15:55:234 days ago1724687723IN
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Un Stake206130572024-08-26 13:26:474 days ago1724678807IN
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Un Stake206108142024-08-26 5:55:594 days ago1724651759IN
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Un Stake206106012024-08-26 5:13:114 days ago1724649191IN
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Un Stake206073672024-08-25 18:23:235 days ago1724610203IN
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Stake206072272024-08-25 17:55:115 days ago1724608511IN
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Un Stake206066992024-08-25 16:08:235 days ago1724602103IN
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0 ETH0.000073151.37374309
Un Stake206057402024-08-25 12:55:115 days ago1724590511IN
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0 ETH0.000081951.09050694
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206416302024-08-30 13:16:116 hrs ago1725023771
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206394122024-08-30 5:50:2314 hrs ago1724997023
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206390282024-08-30 4:33:1115 hrs ago1724992391
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206382892024-08-30 2:03:4718 hrs ago1724983427
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206355852024-08-29 16:59:2327 hrs ago1724950763
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206355482024-08-29 16:51:5927 hrs ago1724950319
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206349242024-08-29 14:46:2329 hrs ago1724942783
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206347622024-08-29 14:13:5929 hrs ago1724940839
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206345382024-08-29 13:28:3530 hrs ago1724938115
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206340422024-08-29 11:48:4732 hrs ago1724932127
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206192072024-08-27 10:04:593 days ago1724753099
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206188012024-08-27 8:43:473 days ago1724748227
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206184322024-08-27 7:29:353 days ago1724743775
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206172012024-08-27 3:21:233 days ago1724728883
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206167792024-08-27 1:55:593 days ago1724723759
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206130572024-08-26 13:26:474 days ago1724678807
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206106012024-08-26 5:13:114 days ago1724649191
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206072272024-08-25 17:55:115 days ago1724608511
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206066992024-08-25 16:08:235 days ago1724602103
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Contract Source Code Verified (Exact Match)

Contract Name:
Stake1Cat

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 999999 runs

Other Settings:
istanbul EvmVersion
File 1 of 8 : Stake1Cat.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

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

contract Stake1Cat is ReentrancyGuard, Ownable, Pausable {
    using SafeERC20 for IERC20;

    uint256[] public pointsSS = [11574074074075, 1653439153440, 385802469136, 128600823046, 32150205762];
    uint256 private constant D1 = 1 days;
    uint256 private constant D7 = 7 days;
    uint256 private constant D8 = 8 days;
    uint256 private constant D30 = 30 days;
    uint256 private constant D38 = 38 days;
    uint256 private constant D90 = 90 days;
    uint256 private constant D128 = 128 days;
    uint256 private constant D360 = 360 days;

    address public tokenAddress;
    uint256 public unStakeStartTime;
    uint256 public unStakeEndTime;
    bool public isTransfer;
    address public transferAddress;

    mapping(address => StakeInfo) private stakes;

    struct StakeInfo {
        uint256 lastTime;
        uint256 amount;
    }

    event Stake(
        address indexed sender,
        uint256 amount
    );

    event UnStake(
        address indexed sender,
        uint256 amount
    );

    constructor(address _tokenAddress) {
        tokenAddress = _tokenAddress;
    }

    function getStakeInfo(address addr) public virtual view returns (uint256 lastTime, uint256 amount, uint256 points){
        StakeInfo memory info = stakes[addr];
        lastTime = info.lastTime;
        amount = info.amount;
        points = getPoints(addr);
    }

    function getPoints(address sender) public virtual view returns (uint256 points){
        points = getPoints(sender, block.timestamp);
    }

    function getPoints(address sender, uint256 timestamp) public virtual view returns (uint256 points){
        StakeInfo memory info = stakes[sender];
        if (info.lastTime > 0 && info.amount > 0) {
            uint256 time = timestamp - info.lastTime;
            if (time <= D1) {
                points = (info.amount * time * pointsSS[0]) / 1e18;
            } else if (time <= D8) {
                points = info.amount * (D1 * pointsSS[0]
                    + (time - D1) * pointsSS[1]) / 1e18;
            } else if (time <= D38) {
                points = info.amount * (D1 * pointsSS[0]
                + D7 * pointsSS[1]
                    + (time - D8) * pointsSS[2]) / 1e18;
            } else if (time <= D128) {
                points = info.amount * (D1 * pointsSS[0]
                + D7 * pointsSS[1]
                + D30 * pointsSS[2]
                    + (time - D38) * pointsSS[3]) / 1e18;
            } else {
                uint256 lTime = time - D128;
                points = info.amount * (D1 * pointsSS[0]
                + D7 * pointsSS[1]
                + D30 * pointsSS[2]
                + D90 * pointsSS[3]
                    + (lTime > D360 ? D360 : lTime) * pointsSS[4]) / 1e18;
            }
        } else points = 0;
    }

    function getLadder(uint256 amount, uint256 points) public view returns (uint256){
        uint256 l1 = amount * D1 * pointsSS[0];
        if (points <= l1 / 1e18) return 1;
        uint256 l2 = l1 + amount * D7 * pointsSS[1];
        if (points <= l2 / 1e18) return 2;
        uint256 l3 = l2 + amount * D30 * pointsSS[2];
        if (points <= l3 / 1e18) return 3;
        uint256 l4 = l3 + amount * D90 * pointsSS[3];
        if (points <= l4 / 1e18) return 4;
        else return 5;
    }

    function getLastTime(uint256 amount, uint256 points, uint256 timestamp) public view returns (uint256 lastTime){
        uint256 ladder = getLadder(amount, points);
        if (ladder == 1) {
            lastTime = timestamp - (points * 1e18 / amount / pointsSS[0]);
        } else if (ladder == 2) {
            lastTime = timestamp - ((points * 1e18 - amount * D1 * pointsSS[0])
            / amount / pointsSS[1] + D1);
        } else if (ladder == 3) {
            lastTime = timestamp - ((points * 1e18 - amount * (D1 * pointsSS[0] + D7 * pointsSS[1]))
            / amount / pointsSS[2] + D8);
        } else if (ladder == 4) {
            lastTime = timestamp - ((points * 1e18 - amount * (D1 * pointsSS[0] + D7 * pointsSS[1]
                + D30 * pointsSS[2]))
            / amount / pointsSS[3] + D38);
        } else {
            lastTime = timestamp - ((points * 1e18 - amount * (D1 * pointsSS[0] + D7 * pointsSS[1]
            + D30 * pointsSS[2] + D90 * pointsSS[3]))
            / amount / pointsSS[4] + D128);
        }
    }

    function stakeBatch(
        address[] memory tos,
        uint256[] memory amounts
    ) public virtual {
        require(tos.length == amounts.length, "length error");
        uint256 amount;
        for (uint256 i = 0; i < amounts.length; i++) {
            amount += amounts[i];
            _stake(tos[i], amounts[i]);
        }
        IERC20 token = IERC20(tokenAddress);
        token.safeTransferFrom(_msgSender(), address(this), amount);
    }

    function stake(uint256 _amount) public virtual {
        require(_amount > 0, 'Error: _amount == 0');
        IERC20 token = IERC20(tokenAddress);
        token.safeTransferFrom(_msgSender(), address(this), _amount);
        _stake(_msgSender(), _amount);
    }

    function _stake(address _sender, uint256 _amount) internal virtual whenNotPaused {
        uint256 points = getPoints(_sender);
        StakeInfo storage info = stakes[_sender];
        info.amount += _amount;
        info.lastTime = getLastTime(info.amount, points, block.timestamp);
        emit Stake(_sender, _amount);
    }

    function _unStake(address _receiver, uint256 _amount) internal virtual {
        StakeInfo storage info = stakes[msg.sender];
        require(_amount > 0 && _amount <= info.amount, 'Error: _amount');
        info.amount -= _amount;
        IERC20 token = IERC20(tokenAddress);
        token.safeTransfer(_receiver, _amount);
        emit UnStake(msg.sender, _amount);
    }

    function unStake(uint256 _amount) external whenNotPaused {
        require(block.timestamp >= unStakeStartTime && block.timestamp <= unStakeEndTime, 'Error: Time not arrived');
        _unStake(msg.sender, _amount);
    }

    function transfer(uint256 _amount) external {
        require(isTransfer, 'Error: Disabled');
        _unStake(transferAddress, _amount);
    }

    function pause() public onlyOwner {
        _pause();
    }

    function unpause() public onlyOwner {
        _unpause();
    }

    function setTransfer(bool _isTransfer) public onlyOwner {
        isTransfer = _isTransfer;
    }

    function setTransferAddress(address _transferAddress) public onlyOwner {
        require(_transferAddress != address(0), 'Error: Zero address');
        transferAddress = _transferAddress;
    }

    function setUnStakeTime(uint256 _unStakeStartTime, uint256 _unStakeEndTime) public onlyOwner {
        require(_unStakeEndTime > _unStakeStartTime, 'Error');
        unStakeStartTime = _unStakeStartTime;
        unStakeEndTime = _unStakeEndTime;
    }

    function emergencyWithdrawEther() public onlyOwner {
        payable(msg.sender).transfer(address(this).balance);
    }

    function emergencyWithdrawErc20(address _tokenAddress) public onlyOwner {
        IERC20 token = IERC20(_tokenAddress);
        token.safeTransfer(msg.sender, token.balanceOf(address(this)));
    }
}

File 2 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

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() {
        _transferOwnership(_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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 8 : Pausable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 4 of 8 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

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 making 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;
    }
}

File 5 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

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 `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, 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 `from` to `to` 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 from,
        address to,
        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 6 of 8 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

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");
        }
    }
}

File 7 of 8 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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);
            }
        }
    }
}

File 8 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "evmVersion": "istanbul",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"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":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"UnStake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"}],"name":"emergencyWithdrawErc20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emergencyWithdrawEther","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"points","type":"uint256"}],"name":"getLadder","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"points","type":"uint256"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"getLastTime","outputs":[{"internalType":"uint256","name":"lastTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"getPoints","outputs":[{"internalType":"uint256","name":"points","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"getPoints","outputs":[{"internalType":"uint256","name":"points","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getStakeInfo","outputs":[{"internalType":"uint256","name":"lastTime","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"points","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isTransfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"pointsSS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_isTransfer","type":"bool"}],"name":"setTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_transferAddress","type":"address"}],"name":"setTransferAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_unStakeStartTime","type":"uint256"},{"internalType":"uint256","name":"_unStakeEndTime","type":"uint256"}],"name":"setUnStakeTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"tos","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"stakeBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"transferAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"unStake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unStakeEndTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unStakeStartTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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08a26c638eedba3473a38864736f6c63430008070033

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000508e00d5cef397b02d260d035e5ee80775e4c821

-----Decoded View---------------
Arg [0] : _tokenAddress (address): 0x508E00D5ceF397B02d260D035e5EE80775e4C821

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000508e00d5cef397b02d260d035e5ee80775e4c821


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.