ERC-20
Overview
Max Total Supply
10,000,000,000 HAROLD
Holders
119
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Loading...
Loading
Loading...
Loading
Loading...
Loading
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|
Contract Name:
Harold
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// Twitter.com/Harold_ERC // https://t.me/Harold_ERC // SPDX-License-Identifier: UNLICENSED // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; 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: @openzeppelin/contracts/token/ERC20/IERC20.sol // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; interface IERC20 { event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address to, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; interface IERC20Metadata is IERC20 { function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } function decimals() public view virtual override returns (uint8) { return 18; } function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; _balances[to] += amount; } emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; unchecked { _balances[account] += amount; } emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; _totalSupply -= amount; } emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } pragma solidity ^0.8.9; contract Harold is ERC20 { constructor() ERC20("Harold", "HAROLD") { _mint(msg.sender, 10000000000 * 10 ** decimals()); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"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":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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
Deployed Bytecode
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
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
[ Download: CSV Export ]
A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.