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Contract

0x4EB7deCdaf6502eF24BC5C4E7C15fBF60fBE8429
 

Overview

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0 ETH

Eth Value

$0.00

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Block
From
To
Airdrop188007262023-12-16 19:33:59321 days ago1702755239IN
0x4EB7deCd...60fBE8429
0 ETH0.0029942347.32099148
Airdrop187845902023-12-14 13:10:59324 days ago1702559459IN
0x4EB7deCd...60fBE8429
0 ETH0.0036466249.83287371
Airdrop185837742023-11-16 10:13:11352 days ago1700129591IN
0x4EB7deCd...60fBE8429
0 ETH0.0016390725.90405141
Airdrop185712942023-11-14 16:19:47353 days ago1699978787IN
0x4EB7deCd...60fBE8429
0 ETH0.0027156758.81274959
Airdrop184039412023-10-22 6:05:35377 days ago1697954735IN
0x4EB7deCd...60fBE8429
0 ETH0.00043126.81482441
Airdrop183629252023-10-16 12:26:11383 days ago1697459171IN
0x4EB7deCd...60fBE8429
0 ETH0.000587399.28316184
Airdrop183361232023-10-12 18:28:35386 days ago1697135315IN
0x4EB7deCd...60fBE8429
0 ETH0.0007085211.19755939
Airdrop183333562023-10-12 9:10:59387 days ago1697101859IN
0x4EB7deCd...60fBE8429
0 ETH0.000527627.21022915
Airdrop183233932023-10-10 23:40:47388 days ago1696981247IN
0x4EB7deCd...60fBE8429
0 ETH0.000469316.41341366
Airdrop183207242023-10-10 14:42:59388 days ago1696948979IN
0x4EB7deCd...60fBE8429
0 ETH0.0008858512.10559991
Airdrop183206882023-10-10 14:35:47388 days ago1696948547IN
0x4EB7deCd...60fBE8429
0 ETH0.0012196116.6666317
Airdrop183206532023-10-10 14:28:47388 days ago1696948127IN
0x4EB7deCd...60fBE8429
0 ETH0.001225211.63740526
Airdrop183206162023-10-10 14:21:11388 days ago1696947671IN
0x4EB7deCd...60fBE8429
0 ETH0.0015643214.21054984
Airdrop183205542023-10-10 14:08:47388 days ago1696946927IN
0x4EB7deCd...60fBE8429
0 ETH0.0014744210.73094714
Airdrop183205192023-10-10 14:01:47388 days ago1696946507IN
0x4EB7deCd...60fBE8429
0 ETH0.0009715415.35434389
Airdrop182921342023-10-06 14:43:59392 days ago1696603439IN
0x4EB7deCd...60fBE8429
0 ETH0.0008775611.99232466
Airdrop182857462023-10-05 17:16:59393 days ago1696526219IN
0x4EB7deCd...60fBE8429
0 ETH0.0008180611.17925538
Airdrop182856062023-10-05 16:48:59393 days ago1696524539IN
0x4EB7deCd...60fBE8429
0 ETH0.0012558111.40796446
Airdrop182855702023-10-05 16:41:47393 days ago1696524107IN
0x4EB7deCd...60fBE8429
0 ETH0.001419610.33196954
Airdrop182854822023-10-05 16:24:11393 days ago1696523051IN
0x4EB7deCd...60fBE8429
0 ETH0.0011140515.22408657
Airdrop182854202023-10-05 16:11:47393 days ago1696522307IN
0x4EB7deCd...60fBE8429
0 ETH0.0009988915.78653764
Airdrop182853832023-10-05 16:04:23393 days ago1696521863IN
0x4EB7deCd...60fBE8429
0 ETH0.0017171817.14112635
Airdrop182852712023-10-05 15:41:47393 days ago1696520507IN
0x4EB7deCd...60fBE8429
0 ETH0.0021303116.75012952
Airdrop182852342023-10-05 15:34:23393 days ago1696520063IN
0x4EB7deCd...60fBE8429
0 ETH0.0024001923.95903602
Airdrop182851982023-10-05 15:27:11393 days ago1696519631IN
0x4EB7deCd...60fBE8429
0 ETH0.0026435719.98586363
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Contract Source Code Verified (Exact Match)

Contract Name:
Airdrop

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 1000000 runs

Other Settings:
paris EvmVersion
File 1 of 6 : Airdrop.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import "openzeppelin-contracts/token/ERC20/IERC20.sol";
import "openzeppelin-contracts/access/Ownable.sol";
import "openzeppelin-contracts/security/ReentrancyGuard.sol";
import "./TransferHelper.sol";

contract Airdrop is Ownable, ReentrancyGuard {
    IERC20 public token;
    uint256 public preset_amount;

    constructor(IERC20 _token) {
        token = _token;
    }

    function airdrop(address[] calldata recipients, uint256[] calldata amounts) external onlyOwner nonReentrant {
        require(recipients.length == amounts.length, "Airdrop: Invalid input");
        for (uint256 i = 0; i < recipients.length; i++) {
            TransferHelper.safeTransfer(address(token), recipients[i], amounts[i]);
        }
    }

    function airdropPresetAmount(address[] calldata recipients) external onlyOwner nonReentrant {
        for (uint256 i = 0; i < recipients.length; i++) {
            TransferHelper.safeTransfer(address(token), recipients[i], preset_amount);
        }
    }

    function setPresetAmount(uint256 amount) external onlyOwner {
        preset_amount = amount;
    }

    function setTokenAddress(IERC20 _token) external onlyOwner {
        token = _token;
    }

}

File 2 of 6 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 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);
}

File 3 of 6 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 4 of 6 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

File 5 of 6 : TransferHelper.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/**
    helper methods for interacting with ERC20 tokens that do not consistently return true/false
    with the addition of a transfer function to send eth or an erc20 token
*/
library TransferHelper {
    function safeApprove(address token, address to, uint value) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: APPROVE_FAILED");
    }

    function safeTransfer(address token, address to, uint value) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: TRANSFER_FAILED");
    }

    function safeTransferFrom(address token, address from, address to, uint value) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: TRANSFER_FROM_FAILED");
    }
    
    // sends ETH or an erc20 token
    function safeTransferBaseToken(address token, address payable to, uint value, bool isERC20) internal {
        if (!isERC20) {
            to.transfer(value);
        } else {
            (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
            require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: TRANSFER_FAILED");
        }
    }
}

File 6 of 6 : 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
{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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

000000000000000000000000054b8f99d15cc5b35a42a926635977d62692f25b

-----Decoded View---------------
Arg [0] : _token (address): 0x054B8f99D15cC5B35a42a926635977d62692F25b

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000054b8f99d15cc5b35a42a926635977d62692f25b


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