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Contract Name
GatedMaxToken (Ansem's cat)
Compiler
solidity · v0.8.26+commit.8a97fa7a
Optimization
Yes · 200 runs
EVM Version
cancun
Source
Mirrored from Robinhood Chain explorer
Contract Source Code
Outline
C GatedMaxToken
ƒ initialize
ƒ setExempt
ƒ _update
GatedMaxToken.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.26;
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {IRelayRegistry} from "./GatedToken.sol";
/// @title GatedMaxToken
/// @notice Combines the two mechanisms: a **buy-gate** (during the blink, buys — transfers out of the pool
/// — only succeed if tx.origin is a whitelisted Relay relayer) AND a **2% max-wallet** anti-whale cap.
/// Sells are always allowed. Pool/launchpad/routers are exempt from the cap.
contract GatedMaxToken is ERC20 {
error NotLaunchpad();
error AlreadyInitialized();
error BuyLocked();
error MaxWalletExceeded();
uint256 public constant TOTAL_SUPPLY = 1_000_000_000e18;
IRelayRegistry public immutable registry;
address public immutable launchpad;
uint256 public immutable maxWallet;
address public pool;
uint64 public windowEnd;
mapping(address => bool) public exempt;
constructor(string memory name_, string memory symbol_, address _launchpad, IRelayRegistry _registry, uint16 maxWalletBps)
ERC20(name_, symbol_)
{
launchpad = _launchpad;
registry = _registry;
maxWallet = (TOTAL_SUPPLY * maxWalletBps) / 10_000;
exempt[_launchpad] = true;
_mint(_launchpad, TOTAL_SUPPLY);
}
/// @notice Launchpad arms the gate (pool + window) and seeds cap exemptions (pool + routers).
function initialize(address _pool, uint64 _windowEnd, address[] calldata exemptions) external {
if (msg.sender != launchpad) revert NotLaunchpad();
if (pool != address(0)) revert AlreadyInitialized();
pool = _pool;
windowEnd = _windowEnd;
exempt[_pool] = true;
for (uint256 i; i < exemptions.length; i++) exempt[exemptions[i]] = true;
}
function setExempt(address a, bool b) external {
if (msg.sender != launchpad) revert NotLaunchpad();
exempt[a] = b;
}
function _update(address from, address to, uint256 value) internal override {
// Buy gate: block buys (out of the pool) during the window unless origin is a whitelisted relayer.
if (pool != address(0) && from == pool && block.timestamp < windowEnd && !registry.isRelayer(tx.origin)) {
revert BuyLocked();
}
super._update(from, to, value);
// Max-wallet cap on non-exempt recipients.
if (to != address(0) && !exempt[to] && balanceOf(to) > maxWallet) revert MaxWalletExceeded();
}
}Contract ABI
[
{
"type": "constructor",
"inputs": [
{
"name": "name_",
"type": "string",
"internalType": "string"
},
{
"name": "symbol_",
"type": "string",
"internalType": "string"
},
{
"name": "_launchpad",
"type": "address",
"internalType": "address"
},
{
"name": "_registry",
"type": "address",
"internalType": "contract IRelayRegistry"
},
{
"name": "maxWalletBps",
"type": "uint16",
"internalType": "uint16"
}
],
"stateMutability": "nonpayable"
},
{
"name": "AlreadyInitialized",
"type": "error",
"inputs": []
},
{
"name": "BuyLocked",
"type": "error",
"inputs": []
},
{
"name": "ERC20InsufficientAllowance",
"type": "error",
"inputs": [
{
"name": "spender",
"type": "address",
"internalType": "address"
},
{
"name": "allowance",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "needed",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ERC20InsufficientBalance",
"type": "error",
"inputs": [
{
"name": "sender",
"type": "address",
"internalType": "address"
},
{
"name": "balance",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "needed",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ERC20InvalidApprover",
"type": "error",
"inputs": [
{
"name": "approver",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "ERC20InvalidReceiver",
"type": "error",
"inputs": [
{
"name": "receiver",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "ERC20InvalidSender",
"type": "error",
"inputs": [
{
"name": "sender",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "ERC20InvalidSpender",
"type": "error",
"inputs": [
{
"name": "spender",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "MaxWalletExceeded",
"type": "error",
"inputs": []
},
{
"name": "NotLaunchpad",
"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": "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": "",
"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": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "decimals",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint8",
"internalType": "uint8"
}
],
"stateMutability": "view"
},
{
"name": "exempt",
"type": "function",
"inputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "view"
},
{
"name": "initialize",
"type": "function",
"inputs": [
{
"name": "_pool",
"type": "address",
"internalType": "address"
},
{
"name": "_windowEnd",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "exemptions",
"type": "address[]",
"internalType": "address[]"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "launchpad",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "maxWallet",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "name",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "view"
},
{
"name": "pool",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "registry",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IRelayRegistry"
}
],
"stateMutability": "view"
},
{
"name": "setExempt",
"type": "function",
"inputs": [
{
"name": "a",
"type": "address",
"internalType": "address"
},
{
"name": "b",
"type": "bool",
"internalType": "bool"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "symbol",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "view"
},
{
"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"
},
{
"name": "windowEnd",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint64",
"internalType": "uint64"
}
],
"stateMutability": "view"
}
]Creation code isn’t shown — this contract was deployed by a factory (internal CREATE), so it has no standalone creation transaction.
Deployed Bytecode
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
| no token holdings | ||||
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Address
0x5e9fc7db31a1afde812dd60e6f3e4ac1400a709c
Type
ERC-20 Token
Bytecode Size
2840 bytes
Created at
Balance
0 ETH
A contract address hosts a smart contract — a set of code functions that can execute independently of any centralized server. Learn more in our Knowledge Base.