hood// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;
/// @title NoZeroToken
/// @notice Fixed-supply ERC20 token minted once to the deployer.
contract NoZeroToken {
string private constant NAME = "zero cat";
string private constant SYMBOL = "k0cat";
uint8 private constant DECIMALS = 18;
uint256 public constant TARGET_POOL_WETH = 1.4 ether;
uint256 public constant TOTAL_SUPPLY = 100_000_000_000_000_000_000_000_000_000 ether;
uint256 public totalSupply;
mapping(address account => uint256 balance) public balanceOf;
mapping(address owner => mapping(address spender => uint256 allowance)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
error InvalidAddress();
error InsufficientBalance();
error InsufficientAllowance();
constructor() {
totalSupply = TOTAL_SUPPLY;
balanceOf[msg.sender] = TOTAL_SUPPLY;
emit Transfer(address(0), msg.sender, TOTAL_SUPPLY);
}
function name() external pure returns (string memory) {
return NAME;
}
function symbol() external pure returns (string memory) {
return SYMBOL;
}
function decimals() external pure returns (uint8) {
return DECIMALS;
}
function transfer(address to, uint256 value) external returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function approve(address spender, uint256 value) external returns (bool) {
if (spender == address(0)) revert InvalidAddress();
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value) external returns (bool) {
uint256 currentAllowance = allowance[from][msg.sender];
if (currentAllowance < value) revert InsufficientAllowance();
if (currentAllowance != type(uint256).max) {
unchecked {
allowance[from][msg.sender] = currentAllowance - value;
}
emit Approval(from, msg.sender, allowance[from][msg.sender]);
}
_transfer(from, to, value);
return true;
}
function _transfer(address from, address to, uint256 value) private {
if (from == address(0) || to == address(0)) revert InvalidAddress();
uint256 fromBalance = balanceOf[from];
if (fromBalance < value) revert InsufficientBalance();
unchecked {
balanceOf[from] = fromBalance - value;
balanceOf[to] += value;
}
emit Transfer(from, to, value);
}
}[
{
"type": "constructor",
"inputs": [],
"stateMutability": "nonpayable"
},
{
"name": "InsufficientAllowance",
"type": "error",
"inputs": []
},
{
"name": "InsufficientBalance",
"type": "error",
"inputs": []
},
{
"name": "InvalidAddress",
"type": "error",
"inputs": []
},
{
"name": "Approval",
"type": "event",
"inputs": [
{
"name": "owner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "spender",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Transfer",
"type": "event",
"inputs": [
{
"name": "from",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "to",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "TARGET_POOL_WETH",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "TOTAL_SUPPLY",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "allowance",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "spender",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "allowance",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "approve",
"type": "function",
"inputs": [
{
"name": "spender",
"type": "address",
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
},
{
"name": "balanceOf",
"type": "function",
"inputs": [
{
"name": "account",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "balance",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "decimals",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint8",
"internalType": "uint8"
}
],
"stateMutability": "pure"
},
{
"name": "name",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "pure"
},
{
"name": "symbol",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "pure"
},
{
"name": "totalSupply",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "transfer",
"type": "function",
"inputs": [
{
"name": "to",
"type": "address",
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
},
{
"name": "transferFrom",
"type": "function",
"inputs": [
{
"name": "from",
"type": "address",
"internalType": "address"
},
{
"name": "to",
"type": "address",
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
}
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
| no token holdings | ||||
| Block | Age | Parent Transaction Hash | Type | Method | From | To | Value | |
|---|---|---|---|---|---|---|---|---|
| no internal transactions found for this address yet (traced blocks + on-demand) | ||||||||
| Type | Age | Block | Details |
|---|---|---|---|
| no cross-chain L1↔L2 transactions for this address | |||
| Txn Hash | Age | Event | Topics / Data |
|---|---|---|---|
| 0xc47cbf…eb32d0 | 37 days agoSat, 11 Jul 2026 14:03:26 UTC | Transfer | [0] 0x000000000000…e68f42a0 [1] 0x000000000000…0000dead data: 0x000000000000000000…ee442589 |
| 0x8354c8…d2aef8 | 37 days agoSat, 11 Jul 2026 14:02:14 UTC | Transfer | [0] 0x000000000000…a40ce5f9 [1] 0x000000000000…e68f42a0 data: 0x000000000000000000…ee442589 |
| 0x8e808a…fe1a05 | 37 days agoSat, 11 Jul 2026 13:59:17 UTC | Transfer | [0] 0x000000000000…e68f42a0 [1] 0x000000000000…0000dead data: 0x000000000000000000…11bbda76 |
| 0x949724…d43530 | 37 days agoSat, 11 Jul 2026 13:58:54 UTC | Transfer | [0] 0x000000000000…e68f42a0 [1] 0x000000000000…a40ce5f9 data: 0x000000000000000000…ee44258a |
| 0x02d739…07f9e5 | 37 days agoSat, 11 Jul 2026 13:58:45 UTC | Approval | [0] 0x000000000000…e68f42a0 [1] 0x000000000000…638de0d3 data: 0xffffffffffffffffff…ffffffff |
| 0x53b978…f4bbd8 | 37 days agoSat, 11 Jul 2026 13:56:21 UTC | Transfer | [0] 0x000000000000…00000000 [1] 0x000000000000…e68f42a0 data: 0x000000000000000000…00000000 |
| Transaction Hash | Method | Block | Age | From | To | Amount | Token | ||
|---|---|---|---|---|---|---|---|---|---|
| no token transfers for this address yet | |||||||||
| Transaction Hash | Method | Block | Age | From | To | Type | Item | ||
|---|---|---|---|---|---|---|---|---|---|
| no NFT transfers for this address yet | |||||||||
| Transaction Hash | Method ? | Block | Age | From | To | Amount | Txn Fee ? | ||
|---|---|---|---|---|---|---|---|---|---|
| 0xc47cbf…eb32d0 | Transfer | 6,999,690 | 37 days agoSat, 11 Jul 2026 14:03:26 UTC | 0x0f21…42a0 | IN | zero cat | $0.000 ETH | 0.00000169 | |
| 0x8e808a…fe1a05 | Transfer | 6,997,201 | 37 days agoSat, 11 Jul 2026 13:59:17 UTC | 0x0f21…42a0 | IN | zero cat | $0.000 ETH | 0.00000265 | |
| 0x02d739…07f9e5 | Approve | 6,996,883 | 37 days agoSat, 11 Jul 2026 13:58:45 UTC | 0x0f21…42a0 | IN | zero cat | $0.000 ETH | 0.00000264 |