Contract Address Details

0x06C0D53112b522c2cAA0B150Dc431386ceeC0cf0

Contract Name
Airdrop
Creator
0xc7d98c–7f3521 at 0xb5df0b–3bb0a4
Balance
0 CLO ( )
Tokens
Fetching tokens...
Transactions
2,418 Transactions
Transfers
243,901 Transfers
Gas Used
5,553,306,022
Last Balance Update
14606839
Contract name:
Airdrop




Optimization enabled
false
Compiler version
v0.6.12+commit.27d51765




EVM Version
default




Verified at
2022-10-27T15:07:00.498690Z

Contract source code

// SPDX-License-Identifier: No License (None)
pragma solidity ^0.6.9;

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 *
 * Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/ownership/Ownable.sol
 * This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
 * when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
 * build/artifacts folder) as well as the vanilla Ownable implementation from an openzeppelin version.
 */
contract Ownable {
    address private _owner;

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

    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor () internal {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(isOwner(),"Not Owner");
        _;
    }

    /**
     * @return true if `msg.sender` is the owner of the contract.
     */
    function isOwner() public view returns (bool) {
        return msg.sender == _owner;
    }

    /**
     * @dev Allows the current owner to relinquish control of the contract.
     * @notice Renouncing to ownership will leave the contract without an owner.
     * It will not be possible to call the functions with the `onlyOwner`
     * modifier anymore.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0),"Zero address not allowed");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IERC20 {
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function mint(address to, uint256 amount) external returns (bool);
}

contract Airdrop is Ownable {

    address public signer;
    mapping (address => mapping(address => bool)) public isReceived; // token => user => isReceived
    mapping (address => uint256) public dropAmount; // token => amount of token to drop

    event SetSigner(address signer);
    event SetDropAmount(address token, uint256 dropAmount);

    function setSigner(address _address) external onlyOwner returns(bool) {
        signer = _address;
        emit SetSigner(_address);
        return true;
    }

    function setDropAmount(address _token, uint256 _dropAmount) external onlyOwner returns(bool) {
        dropAmount[_token] = _dropAmount;
        emit SetDropAmount(_token, _dropAmount);
        return true;
    }    

    function faucet(address token, bytes32 r, bytes32 s, uint8 v) external returns(bool){
        require(signer == ecrecover(keccak256(abi.encodePacked(token, msg.sender, dropAmount[token])), v, r, s), "ECDSA signature is not valid.");
        require(!isReceived[token][msg.sender], "Tokens already received");
        isReceived[token][msg.sender] == true;
        IERC20(token).mint(msg.sender, dropAmount[token]);
        return true;
    }

    function airdrop(address token, uint256 amount, address[] calldata recipients) external onlyOwner returns(bool) {
        for (uint i = 0; i < recipients.length; i++) {
            IERC20(token).transfer(recipients[i], amount);
        }
        return true;
    }

    function airdrop2(address token, uint256[] calldata amounts, address[] calldata recipients) external onlyOwner returns(bool) {
        require(amounts.length == recipients.length);
        for (uint i = 0; i < recipients.length; i++) {
            IERC20(token).transfer(recipients[i], amounts[i]);
        }
        return true;
    }
}
        

Contract ABI

[{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"SetDropAmount","inputs":[{"type":"address","name":"token","internalType":"address","indexed":false},{"type":"uint256","name":"dropAmount","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"SetSigner","inputs":[{"type":"address","name":"signer","internalType":"address","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"airdrop","inputs":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"address[]","name":"recipients","internalType":"address[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"airdrop2","inputs":[{"type":"address","name":"token","internalType":"address"},{"type":"uint256[]","name":"amounts","internalType":"uint256[]"},{"type":"address[]","name":"recipients","internalType":"address[]"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"dropAmount","inputs":[{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"faucet","inputs":[{"type":"address","name":"token","internalType":"address"},{"type":"bytes32","name":"r","internalType":"bytes32"},{"type":"bytes32","name":"s","internalType":"bytes32"},{"type":"uint8","name":"v","internalType":"uint8"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"isOwner","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"isReceived","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"setDropAmount","inputs":[{"type":"address","name":"_token","internalType":"address"},{"type":"uint256","name":"_dropAmount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"setSigner","inputs":[{"type":"address","name":"_address","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"signer","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]}]
            

Deployed ByteCode

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