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QUOTRON (QUOTRONS)0x027aca2794e44f24950d81227dcd516ffbb49d6e

NFTCONTRACT

price

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24h dex volume

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liquidity

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mcap

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fdv

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created

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chains

robinhood

holders

860

circ. supply

total supply

transfers

65.5k

deployer

0x5a8682…0D7F

token transactions transfers holders traders events charts traits contract

ContractVERIFIED

nameQuotronMirrorV2languagesoliditycompilerv0.8.26+commit.8a97fa7aoptimizationenabled (200 runs)evm versioncancunlicensenoneverified at2026-08-13abi surface21 functions · 4 eventsdeployer0x5a8682…0D7Fcreation tx0x222e4f9

src/v2/QuotronMirrorV2.solentry file

// SPDX-License-Identifier: MIT pragma solidity ^0.8.26; interface IQuotron404V2Base { function owner() external view returns (address); function isLaunched() external view returns (bool); function ownerOfId(uint256 id) external view returns (address); function nftBalanceOf(address account) external view returns (uint256); function tokenURI(uint256 id) external view returns (string memory); function royaltyInfo(uint256 id, uint256 salePrice) external view returns (address, uint256); function mirrorTransfer(address from, address to, uint256 id) external; function blacklisted(address account) external view returns (bool); } interface ICreatorTokenV2 { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (address validator); function getTransferValidationFunction() external view returns (bytes4 functionSignature, bool isViewFunction); function setTransferValidator(address validator) external; } interface ICreatorTransferValidatorV2 { function validateTransfer(address caller, address from, address to, uint256 tokenId) external view; } /// @title QuotronMirrorV2 /// @notice ERC-721/2981 creator-token face for Quotron404V2. /// @dev Every base-driven ownership transition clears token approval. This is /// the V1 incident's missing invariant: an approval can never survive a burn, /// rematerialization, hardwire, or ownership change. contract QuotronMirrorV2 is ICreatorTokenV2 { string public constant name = "QUOTRONS"; string public constant symbol = "QUOTRON"; IQuotron404V2Base public immutable base; address private _transferValidator; mapping(uint256 => address) public getApproved; mapping(address => mapping(address => bool)) public isApprovedForAll; event Transfer(address indexed from, address indexed to, uint256 indexed id); event Approval(address indexed owner, address indexed approved, uint256 indexed id); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); error NotBase(); error NotAuthorized(); error UnsafeReceiver(); error InvalidOperator(); error ZeroAddress(); error BlacklistedAccount(); error NotOwner(); error InvalidTransferValidator(); error TransferValidatorFrozen(); constructor(address base_) { if (base_ == address(0)) revert ZeroAddress(); base = IQuotron404V2Base(base_); } function ownerOf(uint256 id) public view returns (address owner_) { owner_ = base.ownerOfId(id); require(owner_ != address(0), "unminted"); } function balanceOf(address account) external view returns (uint256) { if (account == address(0)) revert ZeroAddress(); return base.nftBalanceOf(account); } function tokenURI(uint256 id) external view returns (string memory) { return base.tokenURI(id); } function royaltyInfo(uint256 id, uint256 salePrice) external view returns (address, uint256) { return base.royaltyInfo(id, salePrice); } function owner() external view returns (address) { return base.owner(); } function supportsInterface(bytes4 interfaceId) external pure returns (bool) { return interfaceId == 0x01ffc9a7 // ERC-165 || interfaceId == 0x80ac58cd // ERC-721 || interfaceId == 0x5b5e139f // ERC-721 Metadata || interfaceId == 0x2a55205a // ERC-2981 || interfaceId == type(ICreatorTokenV2).interfaceId; } function getTransferValidator() external view returns (address validator) { return _transferValidator; } function getTransferValidationFunction() external pure returns (bytes4 functionSignature, bool isViewFunction) { return (ICreatorTransferValidatorV2.validateTransfer.selector, true); } function setTransferValidator(address validator) external { if (msg.sender != base.owner()) revert NotOwner(); if (base.isLaunched()) revert TransferValidatorFrozen(); if (validator != address(0) && validator.code.length == 0) revert InvalidTransferValidator(); address oldValidator = _transferValidator; _transferValidator = validator; emit TransferValidatorUpdated(oldValidator, validator); } function approve(address spender, uint256 id) external { address owner_ = ownerOf(id); _requireNotBlacklisted(owner_); _requireNotBlacklisted(msg.sender); _requireNotBlacklisted(spender); if (spender == owner_) revert InvalidOperator(); if (msg.sender != owner_ && !isApprovedForAll[owner_][msg.sender]) { revert NotAuthorized(); } getApproved[id] = spender; emit Approval(owner_, spender, id); } function setApprovalForAll(address operator, bool approved) external { _requireNotBlacklisted(msg.sender); _requireNotBlacklisted(operator); if (operator == msg.sender) revert InvalidOperator(); isApprovedForAll[msg.sender][operator] = approved; emit ApprovalForAll(msg.sender, operator, approved); } function transferFrom(address from, address to, uint256 id) public { if (to == address(0)) revert ZeroAddress(); _requireNotBlacklisted(from); _requireNotBlacklisted(to); _requireNotBlacklisted(msg.sender); address owner_ = ownerOf(id); require(owner_ == from, "wrong from"); if (msg.sender != owner_ && msg.sender != getApproved[id] && !isApprovedForAll[owner_][msg.sender]) { revert NotAuthorized(); } address validator = _transferValidator; if (validator != address(0)) { ICreatorTransferValidatorV2(validator).validateTransfer(msg.sender, from, to, id); } _clearApproval(owner_, id); base.mirrorTransfer(from, to, id); emit Transfer(from, to, id); } function safeTransferFrom(address from, address to, uint256 id) external { safeTransferFrom(from, to, id, ""); } function safeTransferFrom(address from, address to, uint256 id, bytes memory data) public { transferFrom(from, to, id); if (to.code.length != 0) { (bool ok, bytes memory result) = to.call(abi.encodeWithSelector(0x150b7a02, msg.sender, from, id, data)); if (!ok || result.length < 32 || bytes4(abi.decode(result, (bytes32))) != bytes4(0x150b7a02)) { revert UnsafeReceiver(); } } } /// @dev Called for every base-driven mint/burn/rematerialization. function emitTransfer(address from, address to, uint256 id) external { if (msg.sender != address(base)) revert NotBase(); _clearApproval(from, id); emit Transfer(from, to, id); } /// @dev Hardwiring changes the token's approval domain even though the /// owner and ERC-721 id remain the same. function clearApproval(address owner_, uint256 id) external { if (msg.sender != address(base)) revert NotBase(); _clearApproval(owner_, id); } function _clearApproval(address owner_, uint256 id) internal { if (getApproved[id] != address(0)) { delete getApproved[id]; if (owner_ != address(0)) emit Approval(owner_, address(0), id); } } function _requireNotBlacklisted(address account) internal view { if (base.blacklisted(account)) revert BlacklistedAccount(); } }

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