hood
// SPDX-License-Identifier: MIT
pragma solidity 0.8.30;
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {ERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/ERC20Permit.sol";
/// @title QuantChat (QUANTCHAT)
/// @notice Fixed-supply ERC-20 token. The entire supply of 1,000,000 QUANTCHAT is
/// minted once, at deployment, to the address passed to the constructor.
///
/// This contract is intentionally minimal and immutable:
/// - no owner or privileged roles
/// - no minting after deployment (supply can never increase)
/// - no pausing, no blacklist, no transfer fees or taxes
/// - no upgradeability
///
/// It extends the audited OpenZeppelin ERC20 implementation with
/// ERC20Permit (EIP-2612), which allows gasless approvals via signatures
/// — expected by modern wallets, routers, and aggregators.
contract QuantChat is ERC20, ERC20Permit {
/// @param recipient Address that receives the entire fixed supply.
constructor(address recipient) ERC20("QuantChat", "QUANTCHAT") ERC20Permit("QuantChat") {
_mint(recipient, 1_000_000 * 10 ** decimals());
}
}[
{
"type": "constructor",
"inputs": [
{
"name": "recipient",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "ECDSAInvalidSignature",
"type": "error",
"inputs": []
},
{
"name": "ECDSAInvalidSignatureLength",
"type": "error",
"inputs": [
{
"name": "length",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ECDSAInvalidSignatureS",
"type": "error",
"inputs": [
{
"name": "s",
"type": "bytes32",
"internalType": "bytes32"
}
]
},
{
"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": "ERC2612ExpiredSignature",
"type": "error",
"inputs": [
{
"name": "deadline",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ERC2612InvalidSigner",
"type": "error",
"inputs": [
{
"name": "signer",
"type": "address",
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "InvalidAccountNonce",
"type": "error",
"inputs": [
{
"name": "account",
"type": "address",
"internalType": "address"
},
{
"name": "currentNonce",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "InvalidShortString",
"type": "error",
"inputs": []
},
{
"name": "StringTooLong",
"type": "error",
"inputs": [
{
"name": "str",
"type": "string",
"internalType": "string"
}
]
},
{
"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": "EIP712DomainChanged",
"type": "event",
"inputs": [],
"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": "DOMAIN_SEPARATOR",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "bytes32",
"internalType": "bytes32"
}
],
"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": "eip712Domain",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "fields",
"type": "bytes1",
"internalType": "bytes1"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "version",
"type": "string",
"internalType": "string"
},
{
"name": "chainId",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "verifyingContract",
"type": "address",
"internalType": "address"
},
{
"name": "salt",
"type": "bytes32",
"internalType": "bytes32"
},
{
"name": "extensions",
"type": "uint256[]",
"internalType": "uint256[]"
}
],
"stateMutability": "view"
},
{
"name": "name",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "view"
},
{
"name": "nonces",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "permit",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "spender",
"type": "address",
"internalType": "address"
},
{
"name": "value",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "deadline",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "v",
"type": "uint8",
"internalType": "uint8"
},
{
"name": "r",
"type": "bytes32",
"internalType": "bytes32"
},
{
"name": "s",
"type": "bytes32",
"internalType": "bytes32"
}
],
"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"
}
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
| Global Dollar (USDG) | USDG | 20.5 | $1 | $20.5 |
 Dih (DIH) | DIH | 1 | $0.0000123 | $0 |
| Txn Hash | Age | Event | Topics / Data |
|---|---|---|---|
| 0x07a40e…323a9b | 10 days agoWed, 05 Aug 2026 16:36:02 UTC | Transfer | [0] 0x000000000000…23eb0bde [1] 0x000000000000…698cfd9f data: 0x000000000000000000…b3ae9848 |
| 0xcc6bd1…3b1d9e | 10 days agoWed, 05 Aug 2026 09:13:55 UTC | Transfer | [0] 0x000000000000…62353db2 [1] 0x000000000000…698cfd9f data: 0x000000000000000000…223e4425 |
| 0x72529f…baa51b | 21 days agoSat, 25 Jul 2026 12:26:25 UTC | Transfer | [0] 0x000000000000…638de0d3 [1] 0x000000000000…23eb0bde data: 0x000000000000000000…f84dff86 |
| 0x72529f…baa51b | 21 days agoSat, 25 Jul 2026 12:26:25 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…638de0d3 data: 0x000000000000000000…f84dff86 |
| 0xb324d3…d67a1f | 21 days agoSat, 25 Jul 2026 12:26:06 UTC | Transfer | [0] 0x000000000000…638de0d3 [1] 0x000000000000…23eb0bde data: 0x000000000000000000…9091f75e |
| 0xb324d3…d67a1f | 21 days agoSat, 25 Jul 2026 12:26:06 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…638de0d3 data: 0x000000000000000000…9091f75e |
| 0x7ada61…f2ff71 | 22 days agoFri, 24 Jul 2026 09:34:20 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…34b81c14 data: 0x000000000000000000…c0bd8e77 |
| 0x7ada61…f2ff71 | 22 days agoFri, 24 Jul 2026 09:34:20 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…24c8fce5 data: 0x000000000000000000…969e4f46 |
| 0x7ada61…f2ff71 | 22 days agoFri, 24 Jul 2026 09:34:20 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…94624eff data: 0x000000000000000000…575bddbd |
| 0x80ab64…6f7ede | 22 days agoFri, 24 Jul 2026 09:34:08 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…34b81c14 data: 0x000000000000000000…a89a5ac4 |
| 0x80ab64…6f7ede | 22 days agoFri, 24 Jul 2026 09:34:08 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…24c8fce5 data: 0x000000000000000000…0967af62 |
| 0x80ab64…6f7ede | 22 days agoFri, 24 Jul 2026 09:34:08 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…94624eff data: 0x000000000000000000…b2020a26 |
| 0xc9113f…2aadf3 | 22 days agoFri, 24 Jul 2026 09:33:59 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…34b81c14 data: 0x000000000000000000…7740ce3c |
| 0xc9113f…2aadf3 | 22 days agoFri, 24 Jul 2026 09:33:59 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…24c8fce5 data: 0x000000000000000000…eef9bf12 |
| 0xc9113f…2aadf3 | 22 days agoFri, 24 Jul 2026 09:33:59 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…94624eff data: 0x000000000000000000…663a8d4e |
| 0x6e531a…8aa2c0 | 22 days agoFri, 24 Jul 2026 09:33:50 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…34b81c14 data: 0x000000000000000000…1ae4ebd8 |
| 0x6e531a…8aa2c0 | 22 days agoFri, 24 Jul 2026 09:33:50 UTC | Transfer | [0] 0x000000000000…94624eff [1] 0x000000000000…24c8fce5 data: 0x000000000000000000…6fb4dd4d |
| 0x6e531a…8aa2c0 | 22 days agoFri, 24 Jul 2026 09:33:50 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…94624eff data: 0x000000000000000000…8a99c925 |
| 0xded264…17b7b1 | 24 days agoThu, 23 Jul 2026 01:16:51 UTC | Transfer | [0] 0x000000000000…b4057489 [1] 0x000000000000…4142a1d6 data: 0x000000000000000000…19d3bc19 |
| 0xded264…17b7b1 | 24 days agoThu, 23 Jul 2026 01:16:51 UTC | Approval | [0] 0x000000000000…b4057489 [1] 0x000000000000…959e5cb2 data: 0xffffffffffffffffff…ffffffff |
| 0xded264…17b7b1 | 24 days agoThu, 23 Jul 2026 01:16:51 UTC | Transfer | [0] 0x000000000000…f6175977 [1] 0x000000000000…b4057489 data: 0x000000000000000000…19d3bc19 |
| 0xc08bc3…339f5e | 24 days agoThu, 23 Jul 2026 00:55:02 UTC | Approval | [0] 0x000000000000…f6175977 [1] 0x000000000000…b4057489 data: 0xffffffffffffffffff…ffffffff |
| 0xfa2f69…a48b5a | 24 days agoThu, 23 Jul 2026 00:55:02 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…f6175977 data: 0x000000000000000000…19d3bc19 |
| 0x61aa3e…6d4a69 | 24 days agoWed, 22 Jul 2026 16:45:13 UTC | Transfer | [0] 0x000000000000…db8c0904 [1] 0x000000000000…52fb002e data: 0x000000000000000000…ab11f133 |
| 0x61aa3e…6d4a69 | 24 days agoWed, 22 Jul 2026 16:45:13 UTC | Transfer | [0] 0x000000000000…4142a1d6 [1] 0x000000000000…db8c0904 data: 0x000000000000000000…ab11f133 |
| Transaction Hash | Method | Block | Age | From | To | Type | Item | ||
|---|---|---|---|---|---|---|---|---|---|
| no NFT transfers for this address yet | |||||||||
| 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 | |||
| Transaction Hash | Method ? | Block | Age | From | To | Amount | Txn Fee ? | ||
|---|---|---|---|---|---|---|---|---|---|
| 0x07a40e…323a9b | Transfer | 28,634,031 | 10 days agoWed, 05 Aug 2026 16:36:02 UTC | 0xaf92…0bde | IN | QuantChat | $0.000 ETH | 0.00000086 | |
| 0xcc6bd1…3b1d9e | Transfer | 28,369,369 | 10 days agoWed, 05 Aug 2026 09:13:55 UTC | 0xf52a…3db2 | IN | QuantChat | $0.000 ETH | 0.00000096 | |
| 0xc08bc3…339f5e | Approve | 16,872,486 | 24 days agoThu, 23 Jul 2026 00:55:02 UTC | 0xc116…5977 | IN | QuantChat | $0.000 ETH | 0.00000443 | |
| 0x405c59…b92348 | Approve | 16,238,311 | 24 days agoWed, 22 Jul 2026 07:16:01 UTC | 0xad01…fce5 | IN | QuantChat | $0.000 ETH | 0.00000345 | |
| 0x83655b…cbbb81 | Approve | 15,381,508 | 25 days agoTue, 21 Jul 2026 07:24:58 UTC | 0x1ebb…53b4 | IN | QuantChat | $0.000 ETH | 0.00000270 | |
| 0xb594a2…340d9f | Approve | 14,998,458 | 26 days agoMon, 20 Jul 2026 20:45:00 UTC | 0x7aca…6809 | IN | QuantChat | $0.000 ETH | 0.00000258 | |
| 0xc02437…b6d453 | Approve | 14,954,989 | 26 days agoMon, 20 Jul 2026 19:32:25 UTC | 0x64c7…cc05 | IN | QuantChat | $0.000 ETH | 0.00000251 | |
| 0x993e22…4345b5 | Approve | 14,881,541 | 26 days agoMon, 20 Jul 2026 17:29:45 UTC | 0x84dd…585a | IN | QuantChat | $0.000 ETH | 0.00000255 | |
| 0xde39a9…d4faca | Approve | 14,869,728 | 26 days agoMon, 20 Jul 2026 17:10:01 UTC | 0xa668…45c8 | IN | QuantChat | $0.000 ETH | 0.00000247 | |
| 0x71c977…d1b3aa | Approve | 14,665,551 | 26 days agoMon, 20 Jul 2026 11:28:56 UTC | 0x1249…e52f | IN | QuantChat | $0.000 ETH | 0.00000236 | |
| 0xfce22c…be43d7 | Approve | 14,562,500 | 26 days agoMon, 20 Jul 2026 08:36:32 UTC | 0xde21…670f | IN | QuantChat | $0.000 ETH | 0.00000242 | |
| 0xb76f67…4040d7 | Approve | 14,438,780 | 26 days agoMon, 20 Jul 2026 05:09:31 UTC | 0x27f7…8755 | IN | QuantChat | $0.000 ETH | 0.00000246 | |
| 0x7b453e…211b9d | Approve | 14,371,751 | 26 days agoMon, 20 Jul 2026 03:17:18 UTC | 0x38ab…4fed | IN | QuantChat | $0.000 ETH | 0.00000251 | |
| 0xe3620a…2d7285 | Approve | 14,214,778 | 27 days agoSun, 19 Jul 2026 22:54:29 UTC | 0xc4fa…d2fb | IN | QuantChat | $0.000 ETH | 0.00000256 | |
| 0x7babb0…25b882 | Approve | 14,134,923 | 27 days agoSun, 19 Jul 2026 20:40:45 UTC | 0x82e3…db2b | IN | QuantChat | $0.000 ETH | 0.00000260 | |
| 0x5a3896…305cff | Transfer | 14,122,880 | 27 days agoSun, 19 Jul 2026 20:20:35 UTC | 0x445c…c0c1 | IN | QuantChat | $0.000 ETH | 0.00000263 | |
| 0x15eae2…d892bd | Approve | 14,089,369 | 27 days agoSun, 19 Jul 2026 19:24:29 UTC | 0xf5c4…6157 | IN | QuantChat | $0.000 ETH | 0.00000265 | |
| 0x40acc9…c7a8f6 | Approve | 14,078,141 | 27 days agoSun, 19 Jul 2026 19:05:42 UTC | 0x38ab…4fed | IN | QuantChat | $0.000 ETH | 0.00000263 | |
| 0x7e5b5c…e6097a | Approve | 14,077,495 | 27 days agoSun, 19 Jul 2026 19:04:37 UTC | 0xcd6c…b324 | IN | QuantChat | $0.000 ETH | 0.00000263 | |
| 0x15a80f…2ae0e9 | Approve | 14,064,092 | 27 days agoSun, 19 Jul 2026 18:42:12 UTC | 0xa78d…2b06 | IN | QuantChat | $0.000 ETH | 0.00000266 | |
| 0x74b0c1…2471ca | Approve | 14,056,366 | 27 days agoSun, 19 Jul 2026 18:29:17 UTC | 0xd6f9…15c7 | IN | QuantChat | $0.000 ETH | 0.00000263 | |
| 0x2578fe…e8719b | Approve | 14,054,185 | 27 days agoSun, 19 Jul 2026 18:25:38 UTC | 0x3e00…aa32 | IN | QuantChat | $0.000 ETH | 0.00000263 | |
| 0xf883cf…66a1c4 | Approve | 14,054,182 | 27 days agoSun, 19 Jul 2026 18:25:38 UTC | 0x2fcd…b37b | IN | QuantChat | $0.000 ETH | 0.00000266 | |
| 0xfd6761…3a87fd | Approve | 14,054,021 | 27 days agoSun, 19 Jul 2026 18:25:21 UTC | 0x3a0c…3795 | IN | QuantChat | $0.000 ETH | 0.00000265 | |
| 0x980127…fff9ff | Approve | 14,054,015 | 27 days agoSun, 19 Jul 2026 18:25:21 UTC | 0xf3f7…6392 | IN | QuantChat | $0.000 ETH | 0.00000262 |
| Transaction Hash | Method | Block | Age | From | To | Amount | Token | ||
|---|---|---|---|---|---|---|---|---|---|
| 0xfd4a9f72…dbb154 | Transfer | 18,970,417 | 21 days agoSat, 25 Jul 2026 11:22:38 UTC | 0xcaf7…5d11 | IN | 0xff36…7510 | $0.001 DIH | Dih (DIH) | |
| 0xff348591…861a3a | Transfer | 14,968,341 | 26 days agoMon, 20 Jul 2026 19:54:41 UTC | 0x8c94…ec08 | IN | 0xff36…7510 | 10.25 USDG | Global Dollar (USDG) | |
| 0xd22851b1…1e18c5 | Transfer | 14,968,236 | 26 days agoMon, 20 Jul 2026 19:54:31 UTC | 0x8c94…ec08 | IN | 0xff36…7510 | 10.25 USDG | Global Dollar (USDG) |