Overview
Max Total Supply
493,005 CR
Holders
5,424
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
9 CRLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
CodexRecordProxy
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-07-23 */ pragma solidity 0.4.24; // File: contracts/ERC165/ERC165.sol /** * @dev A standard for detecting smart contract interfaces. * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-165.md */ contract ERC165 { // bytes4(keccak256('supportsInterface(bytes4)')); bytes4 constant INTERFACE_ERC165 = 0x01ffc9a7; /** * @dev Checks if the smart contract includes a specific interface. * @param _interfaceID The interface identifier, as specified in ERC-165. */ function supportsInterface(bytes4 _interfaceID) public pure returns (bool) { return _interfaceID == INTERFACE_ERC165; } } // File: contracts/ERC721/ERC721Basic.sol /** * @title ERC721 Non-Fungible Token Standard basic interface * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Basic { // bytes4(keccak256('balanceOf(address)')) ^ // bytes4(keccak256('ownerOf(uint256)')) ^ // bytes4(keccak256('approve(address,uint256)')) ^ // bytes4(keccak256('getApproved(uint256)')) ^ // bytes4(keccak256('setApprovalForAll(address,bool)')) ^ // bytes4(keccak256('isApprovedForAll(address,address)')) ^ // bytes4(keccak256('transferFrom(address,address,uint256)')) ^ // bytes4(keccak256('safeTransferFrom(address,address,uint256)')) ^ // bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')); bytes4 constant INTERFACE_ERC721 = 0x80ac58cd; event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId); event Approval(address indexed _owner, address indexed _approved, uint256 indexed _tokenId); event ApprovalForAll(address indexed _owner, address indexed _operator, bool indexed _approved); function balanceOf(address _owner) public view returns (uint256 _balance); function ownerOf(uint256 _tokenId) public view returns (address _owner); // Note: This is not in the official ERC-721 standard so it's not included in the interface hash function exists(uint256 _tokenId) public view returns (bool _exists); function approve(address _to, uint256 _tokenId) public; function getApproved(uint256 _tokenId) public view returns (address _operator); function setApprovalForAll(address _operator, bool _approved) public; function isApprovedForAll(address _owner, address _operator) public view returns (bool); function transferFrom( address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data) public; } // File: contracts/ERC721/ERC721.sol /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Enumerable is ERC721Basic { // bytes4(keccak256('totalSupply()')) ^ // bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) ^ // bytes4(keccak256('tokenByIndex(uint256)')); bytes4 constant INTERFACE_ERC721_ENUMERABLE = 0x780e9d63; function totalSupply() public view returns (uint256); function tokenOfOwnerByIndex(address _owner, uint256 _index) public view returns (uint256 _tokenId); function tokenByIndex(uint256 _index) public view returns (uint256); } /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Metadata is ERC721Basic { // bytes4(keccak256('name()')) ^ // bytes4(keccak256('symbol()')) ^ // bytes4(keccak256('tokenURI(uint256)')); bytes4 constant INTERFACE_ERC721_METADATA = 0x5b5e139f; function name() public view returns (string _name); function symbol() public view returns (string _symbol); function tokenURI(uint256 _tokenId) public view returns (string); } /** * @title ERC-721 Non-Fungible Token Standard, full implementation interface * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ /* solium-disable-next-line no-empty-blocks */ contract ERC721 is ERC721Basic, ERC721Enumerable, ERC721Metadata { } // File: contracts/library/ProxyOwnable.sol /** * @title ProxyOwnable * @dev Essentially the Ownable contract, renamed for the purposes of separating it from the * DelayedOwnable contract (the owner of the token contract). */ contract ProxyOwnable { address public proxyOwner; event ProxyOwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `proxyOwner` of the contract to the sender * account. */ constructor() public { proxyOwner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == proxyOwner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferProxyOwnership(address _newOwner) public onlyOwner { require(_newOwner != address(0)); emit ProxyOwnershipTransferred(proxyOwner, _newOwner); proxyOwner = _newOwner; } } // File: contracts/CodexRecordProxy.sol /** * @title CodexRecordProxy, a proxy contract for token storage * @dev This allows the token owner to optionally upgrade the token in the future * if there are changes needed in the business logic. See the upgradeTo function * for caveats. * Based on MIT licensed code from * https://github.com/zeppelinos/labs/tree/master/upgradeability_using_inherited_storage */ contract CodexRecordProxy is ProxyOwnable { event Upgraded(string version, address indexed implementation); string public version; address public implementation; constructor(address _implementation) public { upgradeTo("1", _implementation); } /** * @dev Fallback function. Any transaction sent to this contract that doesn't match the * upgradeTo signature will fallback to this function, which in turn will use * DELEGATECALL to delegate the transaction data to the implementation. */ function () payable public { address _implementation = implementation; // solium-disable-next-line security/no-inline-assembly assembly { let ptr := mload(0x40) calldatacopy(ptr, 0, calldatasize) let result := delegatecall(gas, _implementation, ptr, calldatasize, 0, 0) let size := returndatasize returndatacopy(ptr, 0, size) switch result case 0 { revert(ptr, size) } default { return(ptr, size) } } } /** * @dev Since name is passed into the ERC721 token constructor, it's not stored in the CodexRecordProxy * contract. Thus, we call into the contract directly to retrieve its value. * @return string The name of the token */ function name() external view returns (string) { ERC721Metadata tokenMetadata = ERC721Metadata(implementation); return tokenMetadata.name(); } /** * @dev Since symbol is passed into the ERC721 token constructor, it's not stored in the CodexRecordProxy * contract. Thus, we call into the contract directly to retrieve its value. * @return string The symbol of token */ function symbol() external view returns (string) { ERC721Metadata tokenMetadata = ERC721Metadata(implementation); return tokenMetadata.symbol(); } /** * @dev Upgrades the CodexRecordProxy to point at a new implementation. Only callable by the owner. * Only upgrade the token after extensive testing has been done. The storage is append only. * The new token must inherit from the previous token so the shape of the storage is maintained. * @param _version The version of the token * @param _implementation The address at which the implementation is available */ function upgradeTo(string _version, address _implementation) public onlyOwner { require( keccak256(abi.encodePacked(_version)) != keccak256(abi.encodePacked(version)), "The version cannot be the same"); require( _implementation != implementation, "The implementation cannot be the same"); require( _implementation != address(0), "The implementation cannot be the 0 address"); version = _version; implementation = _implementation; emit Upgraded(version, implementation); } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"constant":true,"inputs":[],"name":"proxyOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_version","type":"string"},{"name":"_implementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_implementation","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"version","type":"string"},{"indexed":true,"name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"ProxyOwnershipTransferred","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000002c00a92a9c5c919a1a4b5a8ee6bc520f61dbe421
-----Decoded View---------------
Arg [0] : _implementation (address): 0x2c00a92a9c5C919a1a4b5A8Ee6Bc520f61dBE421
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000002c00a92a9c5c919a1a4b5a8ee6bc520f61dbe421
Swarm Source
bzzr://83a557ba1aa9f6ac77ad377a575a0a385b9d2174badc0156a5d6babaf85ad0a3
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