false
false
0

Contract Address Details

0x06C0D53112b522c2cAA0B150Dc431386ceeC0cf0

Contract Name
Airdrop
Creator
0xc7d98c–7f3521 at 0xb5df0b–3bb0a4
Balance
0 CLO
Tokens
Fetching tokens...
Transactions
2,418 Transactions
Transfers
240,401 Transfers
Gas Used
5,553,306,022
Last Balance Update
16286089
Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
Contract name:
Airdrop




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




EVM Version
default




Verified at
2024-09-26T15:24:29.535527Z

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"}]}]

Contract Creation Code

Verify & Publish 
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