Contract 0xeBB5a6dd57d2703fbB9eab09030EB6D06db6d850 1

 
Txn Hash
Method
Block
From
To
Value
0xda9652bcc327fe88e51c9c45fad5be934d435cf3144aed2fa459e79a125f03d0Withdraw144349452022-03-22 8:07:22192 days 15 hrs ago0x1bcb8fd8c6f06424674e96419b98673726ceba7e IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00118487 41.46982973
0x0b45b50e94469ff73683d56f6a7578f9fddd4b31e8d46bbf3c62032bcbb95747Withdraw144153692022-03-19 6:52:34195 days 16 hrs ago0x6f6b2512ccd5769fe2201c77d074236cfbae9f37 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00057766 20.21772197
0xcc8b51d0f319e6bc1065cf40b359f11c8b2c20444e8e8b763af14d16652f3b67Withdraw144153692022-03-19 6:52:34195 days 16 hrs ago0x6f6b2512ccd5769fe2201c77d074236cfbae9f37 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00057766 20.21772197
0xde30649bc8befe53fca2b3d1de7561c1c8656c19cd756ba8c4f65bed638e2345Withdraw144151782022-03-19 6:12:18195 days 16 hrs ago0x784b741cc16c4de002099875d93a9d9f85483f99 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00090391 31.63634736
0x661928926132c65ef1ebfede787cca2f8f6d1d418875134655fed1f285bb518cWithdraw144125982022-03-18 20:30:03196 days 2 hrs ago0x784b741cc16c4de002099875d93a9d9f85483f99 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.001041 36.4345329
0x9a1eb3f7d39a457dc2e6895f53661f948d3070a9def6fccdfe07f023e04c35a0Withdraw143725762022-03-12 14:53:35202 days 8 hrs ago0x75de4af3b9c4f27390aa57ece7d1bd8e556b0f67 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00074945 26.23033042
0xf651f3a179692b17e62ab2daa73bcf2e2daa9e6ba69e19dfae30205525a1f433Withdraw143725642022-03-12 14:49:42202 days 8 hrs ago0x75de4af3b9c4f27390aa57ece7d1bd8e556b0f67 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00050608 17.71263136
0x389a880e5baa2b655a208a673362da4f1815e1eda28b7e718f4dd120e7a90183Withdraw143725492022-03-12 14:47:32202 days 8 hrs ago0x75de4af3b9c4f27390aa57ece7d1bd8e556b0f67 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00059011 20.65359103
0x5ff1cf517461c92ddd562520fbf2610e62ef9ca36730b63a388cdfa541d12795Withdraw143725492022-03-12 14:47:32202 days 8 hrs ago0x75de4af3b9c4f27390aa57ece7d1bd8e556b0f67 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00059011 20.65359103
0x0c2cd2f657cc74c723cc197f16aa5d97d5b186f24059868438881dd4fd37097dWithdraw143704432022-03-12 7:01:36202 days 16 hrs ago0x54649f9ec1281e2fcae20523b1a9a1ae4b3fe4b1 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00040294 14.1027386
0x6c63941329e111d64df8d9038d0683756eb81e576c754a0313aebad3fc6bfd83Withdraw143672982022-03-11 19:09:06203 days 3 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00052604 18.41106611
0xf49113ab62f18970372ad242226958ce647ee92330c96da07016b79685824d56Withdraw143672852022-03-11 19:06:27203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00055633 19.47136709
0x782166e1ef8964d687e1bb093196122f0f6200f09ae074925394b9c917daad04Withdraw143672442022-03-11 18:57:51203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00090754 31.76327378
0x836a248382917ec68cadc2d015a2866b08828687269640fa0e531833aa644230Withdraw143672252022-03-11 18:53:04203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00103876 36.3561955
0xc80a61f3c37dc89d3288465f5651ff2ea926aa775d6804814523a1d23bd6382dWithdraw143672252022-03-11 18:53:04203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00103876 36.3561955
0x86d421691357f2697d7900f3e7ca5690af1ac6165e8fa1a5a664943684a43a4fWithdraw143672252022-03-11 18:53:04203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00103876 36.3561955
0xaedcbaf925fed8ead5b19c6af93ad4d5bbb3a28ec8bc9162bfc83f4c7b2fbf9fWithdraw143671622022-03-11 18:39:12203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00077735 27.20683439
0x706809ff0650453acaa51c24d565d6e69f65af96c52424c0cf8b418887ac6a81Withdraw143671342022-03-11 18:33:18203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00099732 34.90578168
0x09f0b8a41c4ba609b991b184f4fe8ce2b409984449f8e03bede5d7251e4a3fa1Withdraw143671172022-03-11 18:29:15203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00086246 30.1857806
0x5ba656eff54a56e2f52c53a07e0c0bf6378e33e4765b3c5dc6b171f8f6e8d5e7Withdraw143671172022-03-11 18:29:15203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00086246 30.1857806
0x133b7c076fdcfecadf9f8308331341ad766e60e361bb9fb30e8996bbf375853cWithdraw143670902022-03-11 18:23:29203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00088227 30.87916305
0xec7225f5c96b9a08e9b660d91f5aad4e3f01d46f39c478761d60b23941419223Withdraw143670902022-03-11 18:23:29203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00088227 30.87916305
0xf2d68f51f92d9dc043275f121984a5058f958915ca3fa872620a318cd989fb35Withdraw143670892022-03-11 18:23:19203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00084996 29.74834726
0x4127580785cda348696ea56835985c16bae81c8cda5c1284c093ddb8fbde05eeWithdraw143670832022-03-11 18:22:14203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.0010316 36.10530202
0x7ccf20d0a6e1703088dbeb30866a66fa6c19c04c7f44850ff5ccff168a8621aaWithdraw143670822022-03-11 18:21:56203 days 4 hrs ago0x8e8a2937416097e7646f287e58fb2fb4d6bf54f7 IN  0xebb5a6dd57d2703fbb9eab09030eb6d06db6d8500 Ether0.00104606 36.61162477
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Contract Source Code Verified (Exact Match)

Contract Name:
Airdrop

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : Airdrop.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

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

contract Airdrop is Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    
    mapping(address => uint256) public withdrawAmounts;
    mapping(address => uint256) public withdrawnAmounts;
    address[] public withdrawnAddresses;

    address public airdropWallet;

    IERC20 public paraToken;

    bool public withdrawEnabled = false;

    event Withdrawn(
        address indexed to,
        uint256 indexed amount
    );

    constructor(
        IERC20 _paraToken,
        address _airdropWallet
    ) {
        require(address(_paraToken) != address(0), "Para address should not be zero address");
        require(_airdropWallet != address(0), "Airdrop address should not be zero address");

        paraToken = _paraToken;
        airdropWallet = _airdropWallet;
    }

    function airdropArray(address[] calldata newHolders, uint256[] calldata amounts) external onlyOwner {
        uint256 iterator = 0;

        require(newHolders.length == amounts.length, "Must be the same length");

        while(iterator < newHolders.length) {
            withdrawAmounts[newHolders[iterator]] = amounts[iterator] * 10**18;
            iterator += 1;
        }
    }

    function withdraw() external nonReentrant {
        require(withdrawEnabled == true, "Withdraw Para token is not available yet");
        require(withdrawAmounts[msg.sender] > 0, "Withdraw: Sorry, there is no new Para token for your wallet address");

        uint256 withdrawAmount = withdrawAmounts[msg.sender];

        paraToken.safeTransferFrom(airdropWallet, msg.sender, withdrawAmount);

	    withdrawAmounts[msg.sender] = withdrawAmounts[msg.sender].sub(withdrawAmount);
        withdrawnAmounts[msg.sender] = withdrawAmount;
        withdrawnAddresses.push(msg.sender);

        emit Withdrawn(msg.sender, withdrawAmount);
    }

    function setWithdrawEnabled(bool _enabled) public onlyOwner {
        withdrawEnabled = _enabled;
    }

    function getNumberOfWithdrawnPeople() public view returns (uint256) {
        return withdrawnAddresses.length;
    }

    function updateParaToken(IERC20 _paraToken) external onlyOwner {
        require(address(_paraToken) != address(0), "Para token address should not be zero address");
        paraToken = _paraToken;
    }

    function updateAirdropWallet(address newAirdropWallet) external onlyOwner {
        require(newAirdropWallet != address(0), "Airdrop Wallet address should not be zero address");
        airdropWallet = newAirdropWallet;
    }
}

File 2 of 8 : SafeMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

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

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

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

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 3 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;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @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 5 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 6 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 `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 7 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 8 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);
    }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract IERC20","name":"_paraToken","type":"address"},{"internalType":"address","name":"_airdropWallet","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":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[{"internalType":"address[]","name":"newHolders","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"airdropArray","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"airdropWallet","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNumberOfWithdrawnPeople","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paraToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_enabled","type":"bool"}],"name":"setWithdrawEnabled","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAirdropWallet","type":"address"}],"name":"updateAirdropWallet","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_paraToken","type":"address"}],"name":"updateParaToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"withdrawAmounts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"withdrawnAddresses","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"withdrawnAmounts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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

000000000000000000000000fb13dfc9f8f3eeddd7c9b581d0d7cf367513ff7c0000000000000000000000001ea9c77f4fdb75f688de1373667576a9fd5c2ec9

-----Decoded View---------------
Arg [0] : _paraToken (address): 0xFb13dFC9f8f3EeDdD7C9b581D0D7Cf367513FF7C
Arg [1] : _airdropWallet (address): 0x1ea9c77f4FdB75f688DE1373667576A9Fd5C2eC9

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000fb13dfc9f8f3eeddd7c9b581d0d7cf367513ff7c
Arg [1] : 0000000000000000000000001ea9c77f4fdb75f688de1373667576a9fd5c2ec9


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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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.