Contract 0x430ef9263e76dae63c84292c3409d61c598e9682 10

 
 
Txn Hash
Method
Block
From
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Value [Txn Fee]
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0x32cc3c5a83ed2f114f20afb28e5b2fcb568d8d9c145b667db4dc1a74ffb3d0b5Transfer435008212023-06-04 1:05:0413 mins ago0xe2b920d96146d2cf07d90de2747cc05e45707dca IN  Vulcan Forged: PYR Token0 MATIC0.005894409422 144.375276714
0x9f4c10b62ed59ce4d54a6f3cb2af8abe915e6b27d3c5afc563870f0e01343fe2Approve435007722023-06-04 1:03:1315 mins ago0x5b5beebed201470d3864b835db6f96bbe84bb1ec IN  Vulcan Forged: PYR Token0 MATIC0.007120223161 152.764984482
0x79c2aabb7dfbda926ca73795720c916bd8ba267e48cac73df01867a0ff342414Transfer435002002023-06-04 0:41:1237 mins agoBinance: Hot Wallet 2 IN  Vulcan Forged: PYR Token0 MATIC0.010689377288 170.411103487
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0x6833af9cf5eac8ee103f46d2d6b4e3ed5fe248c4967937aa761c3ccd0bbe87eaApprove434981662023-06-03 23:26:121 hr 52 mins ago0xd1450635bcc75ca7cfbd07078d8882ca25e7f250 IN  Vulcan Forged: PYR Token0 MATIC0.006764289427 145.128396386
0xe2a10231902d804a412772478ed435f2ce77cfb9b71fc3b0ec9fec21b64d25bfApprove434977002023-06-03 23:08:302 hrs 10 mins ago 0xmonarch.888  IN  Vulcan Forged: PYR Token0 MATIC0.003744978359 153.9559449
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0x9bcba2db02d1003661d478d6331a856dfa316f64d506ea9399a2670e3ca129fbTransfer434967652023-06-03 22:34:182 hrs 44 mins ago0x0f1101b7cefff44a924346a3ebc53304b32a43f4 IN  Vulcan Forged: PYR Token0 MATIC0.0059939607146.9
0x3ee29044b3c4faaa273a7492fa2b9aac7264f18c783366bd57dd7f1e9d671bc9Transfer434967222023-06-03 22:32:482 hrs 46 mins ago0x08ebfce7530f4e0ac33786581fef849253559bc5 IN  Vulcan Forged: PYR Token0 MATIC0.006271247202153.605388647
0x27f11ae74b6c93bc33f658bf1800a2a4362dc7d9e786f77391c6fb65006a4519Transfer434966812023-06-03 22:31:152 hrs 47 mins agoBinance: Hot Wallet 2 IN  Vulcan Forged: PYR Token0 MATIC0.007988194475 175.030006693
0x627077479b83da9736c0667debe0e068299e00d351319133c47dc5c3b52fad25Transfer434965682023-06-03 22:27:152 hrs 51 mins ago0x25d6b2c7ae20873310126ec5300852af14fbf8d8 IN  Vulcan Forged: PYR Token0 MATIC0.009997890655 172.594656295
0x67d7862af8e7f6f63e1af745a6446fa17b2ee4a2947d253f56fbfa2d955a7bc3Transfer434964032023-06-03 22:21:252 hrs 57 mins ago0xae089096e88ab1fe3bce7bce31260f4ed17b8231 IN  Vulcan Forged: PYR Token0 MATIC0.0070019025153.5
0x230355f5ab29706ec5908a46195ff2f8ddc5cc6d584b53ee89916d908f1b0c4bTransfer434959062023-06-03 22:03:423 hrs 15 mins ago0x0a6d2ea90c90862909d0d7d37d76a777222713d5 IN  Vulcan Forged: PYR Token0 MATIC0.006378240556156.271972478
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0xa9e87f65a0364dab626caf5e530e65f9ac78756c74b76f9d25916c8f8214ecf0Transfer434937022023-06-03 20:42:484 hrs 36 mins ago0xb702c3d24d54fe311d435a6935fd43257fa8b21e IN  Vulcan Forged: PYR Token0 MATIC0.006027930816 147.602311925
0x801d91bd05c8f99b6b1646827268a754b3c51b5493e128c2ab50f7eb1fed80deTransfer434904352023-06-03 18:36:216 hrs 42 mins ago0x9e389ac3fdcb2d441310d053c94fbfa01de6eb07 IN  Vulcan Forged: PYR Token0 MATIC0.007243662158.8
0xe145c68cfdb346f0dbf629e88b48b7b4cf4ffa1e9bd64f3c6290e9a7eb74ead1Transfer434900272023-06-03 18:20:216 hrs 58 mins agoBinance: Hot Wallet 2 IN  Vulcan Forged: PYR Token0 MATIC0.010864800581 173.207718863
0xa9c1c626fea7bc0a721b5a35eea60aa2d9da48b5f0243b818494a6a280c89a61Transfer434893452023-06-03 17:54:127 hrs 24 mins ago0xff3680c15b197945e1865cf0846c1a8822005c2b IN  Vulcan Forged: PYR Token0 MATIC0.0077677578170.2
0x81968d28497c37bcdb38e02bdd798b332b04198959fe866f0c1ae365389daf25Transfer434889732023-06-03 17:39:467 hrs 39 mins ago0xb77275841660a040c232541caf63129fdf80c025 IN  Vulcan Forged: PYR Token0 MATIC0.00724932365177.666437521
0x8d2f2d94bc0eb366a77cb31e6a13f606988fdbf9a458891bac58f58426311f30Transfer434888712023-06-03 17:36:107 hrs 42 mins ago0xfe784108886df668a3eeb5b35c28d9a5a8bfe660 IN  Vulcan Forged: PYR Token0 MATIC0.010153035634 175.3455889
0x80853d987eec18b15b863d7df2d564a75b6dfb06d17923451bb07677a14b8b06Transfer434887192023-06-03 17:30:147 hrs 48 mins ago0x0d0707963952f2fba59dd06f2b425ace40b492fe IN  Vulcan Forged: PYR Token0 MATIC0.01076804231 171.665189009
0x67ff56058a17e35ce257756a08d5bf6050e3b214a1567e2bcb05c0f9781981a5Transfer434886672023-06-03 17:27:527 hrs 51 mins ago0x8801295266183fe054b623f17a5aa0892b744bad IN  Vulcan Forged: PYR Token0 MATIC0.0105632268168.4
0x8090bf7d3bea30641bf7f1b80405e565b7168c4c3de88fb95e2f1e2611d74164Transfer434884522023-06-03 17:20:167 hrs 58 mins ago0x82b7ac9cba77dee8523e221bb085c6988504a235 IN  Vulcan Forged: PYR Token0 MATIC0.006126921803 150.026244615
0x6f928221568479e763b7ed935ef885ca2966cda2fcb488646f7793cfa1ecde82Transfer434884472023-06-03 17:20:047 hrs 58 mins ago0x1a0a85b466aebc450bbdc0103398cd66544bf10a IN  Vulcan Forged: PYR Token0 MATIC0.006242344868 152.942419909
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OVERVIEW

Vulcan Forged is an established non-fungible token (NFT) game studio, marketplace, and dApp incubator with 10+ games, a 20000+ community, and top 5 NFT marketplace volume.

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Contract Source Code Verified (Exact Match)

Contract Name:
PYRTokenPoly

Compiler Version
v0.5.17+commit.d19bba13

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 1 : PYRTokenPoly.sol
/**
 *Submitted for verification at polygonscan.com on 2021-06-30
 */

pragma solidity ^0.5.17;

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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            codehash := extcodehash(account)
        }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account)
        internal
        pure
        returns (address payable)
    {
        return address(uint160(account));
    }

    /**
     * @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].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );

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

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor() internal {}

    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

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

contract Ownable is Context {
    address private _owner;

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

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

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

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

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return _msgSender() == _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 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 onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
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
    );
}

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

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

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     *
     * _Available since v2.4.0._
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

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

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

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

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20Mintable}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping(address => uint256) internal _balances;

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

    uint256 internal _totalSupply;

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

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

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

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

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue)
        public
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].add(addedValue)
        );
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(
                subtractedValue,
                "ERC20: decreased allowance below zero"
            )
        );
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(
            amount,
            "ERC20: transfer amount exceeds balance"
        );
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

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

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

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

contract BlackListPoly is Ownable {
    mapping(address => bool) public blackListed;
    event BlackListed(address indexed user, bool set);

    constructor(address _owner) public {
        transferOwnership(_owner);
    }

    /**
     * Add or Remove addresses from the blacklist
     */

    function blackList(address _user, bool set) public onlyOwner {
        if (set) {
            require(!blackListed[_user], "already blackListed");
        }
        if (!set) {
            require(blackListed[_user], "user not in blacklist");
        }
        blackListed[_user] = set;
        emit BlackListed(_user, set);
    }

    function batchBlackList(address[] memory _userAddresses, bool[] memory _set)
        public
        onlyOwner
    {
        require(_userAddresses.length == _set.length, "Incomplete info");
        for (uint256 i = 0; i < _userAddresses.length; i++) {
            blackList(_userAddresses[i], _set[i]);
        }
    }

    function checkBlackList(address _user) public view returns (bool) {
        return blackListed[_user];
    }
}

contract PYRTokenPoly is ERC20, Ownable {
    string public name = "PYR Token";
    string public symbol = "PYR";
    uint8 public decimals = 18;
    address public childChainManagerProxy;
    address deployer;
    using Address for address;
    BlackListPoly public blacklist;

    constructor(
        address _owner,
        address _childChainManagerProxy,
        address _blacklistAddress
    ) public {
        require(
            _blacklistAddress.isContract(),
            "_tokenAddress must be a contract"
        );
        blacklist = BlackListPoly(_blacklistAddress);
        childChainManagerProxy = _childChainManagerProxy;
        deployer = _owner;
        transferOwnership(_owner);
    }

    function updateChildChainManager(address newChildChainManagerProxy)
        external
    {
        require(
            newChildChainManagerProxy != address(0),
            "Bad ChildChainManagerProxy address"
        );
        require(msg.sender == deployer, "You're not allowed");

        childChainManagerProxy = newChildChainManagerProxy;
    }

    function deposit(address user, bytes calldata depositData) external {
        require(
            !blacklist.checkBlackList(msg.sender),
            "Token transfer refused. Receiver is on blacklist"
        );
        require(
            msg.sender == childChainManagerProxy,
            "You're not allowed to deposit"
        );

        uint256 amount = abi.decode(depositData, (uint256));

        _totalSupply = _totalSupply.add(amount);
        _balances[user] = _balances[user].add(amount);

        emit Transfer(address(0), user, amount);
    }

    function withdraw(uint256 amount) external {
        require(
            !blacklist.checkBlackList(msg.sender),
            "Token transfer refused. Receiver is on blacklist"
        );
        _balances[msg.sender] = _balances[msg.sender].sub(
            amount,
            "ERC20: burn amount exceeds balance"
        );
        _totalSupply = _totalSupply.sub(amount);

        emit Transfer(msg.sender, address(0), amount);
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        require(
            !blacklist.checkBlackList(sender),
            "Token transfer refused. Receiver is on blacklist"
        );
        require(
            !blacklist.checkBlackList(recipient),
            "Transfer to blacklisted account"
        );
        super._transfer(sender, recipient, amount);
    }
}

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

Contract Security Audit

Contract ABI

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BlackListPoly","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"childChainManagerProxy","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"bytes","name":"depositData","type":"bytes"}],"name":"deposit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newChildChainManagerProxy","type":"address"}],"name":"updateChildChainManager","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000b4ad3a44356240a21ed4cf2e2a9e8632d0351430000000000000000000000000a6fa4fb5f76172d178d61b04b0ecd319c5d1c0aa0000000000000000000000007cdeb379d74221731f31cd0833a3c27e0bf406b1

-----Decoded View---------------
Arg [0] : _owner (address): 0xb4ad3a44356240a21ed4cf2e2a9e8632d0351430
Arg [1] : _childChainManagerProxy (address): 0xa6fa4fb5f76172d178d61b04b0ecd319c5d1c0aa
Arg [2] : _blacklistAddress (address): 0x7cdeb379d74221731f31cd0833a3c27e0bf406b1

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000b4ad3a44356240a21ed4cf2e2a9e8632d0351430
Arg [1] : 000000000000000000000000a6fa4fb5f76172d178d61b04b0ecd319c5d1c0aa
Arg [2] : 0000000000000000000000007cdeb379d74221731f31cd0833a3c27e0bf406b1


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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