Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-08-25
*/

pragma solidity 0.4.24;

contract Cryptopixel {

    // Name of token
    string constant public name = "CryptoPixel";
    // Symbol of Cryptopixel token
  	string constant public symbol = "CPX";


    using SafeMath for uint256;

    /////////////////////////
    // Variables
    /////////////////////////
    // Total number of stored artworks
    uint256 public totalSupply;
    // Group of artwork - 52 is limit
    address[limitChrt] internal artworkGroup;
    // Number of total artworks
    uint constant private limitChrt = 52;
    // This is address of artwork creator
    address constant private creatorAddr = 0x174B3C5f95c9F27Da6758C8Ca941b8FFbD01d330;

    
    // Basic references
    mapping(uint => address) internal tokenIdToOwner;
    mapping(address => uint[]) internal listOfOwnerTokens;
    mapping(uint => string) internal referencedMetadata;
    
    // Events
    event Minted(address indexed _to, uint256 indexed _tokenId);

    // Modifier
    modifier onlyNonexistentToken(uint _tokenId) {
        require(tokenIdToOwner[_tokenId] == address(0));
        _;
    }


    /////////////////////////
    // Viewer Functions
    /////////////////////////
    // Get and returns the address currently marked as the owner of _tokenID. 
    function ownerOf(uint256 _tokenId) public view returns (address _owner)
    {
        return tokenIdToOwner[_tokenId];
    }
    
    // Get and return the total supply of token held by this contract. 
    function totalSupply() public view returns (uint256 _totalSupply)
    {
        return totalSupply;
    }
    
    //Get and return the balance of token held by _owner. 
    function balanceOf(address _owner) public view returns (uint _balance)
    {
        return listOfOwnerTokens[_owner].length;
    }

    // Get and returns a metadata of _tokenId
    function tokenMetadata(uint _tokenId) public view returns (string _metadata)
    {
        return referencedMetadata[_tokenId];
    }
    
    // Retrive artworkGroup
    function getArtworkGroup() public view returns (address[limitChrt]) {
        return artworkGroup;
    }
    
    
    /////////////////////////
    // Update Functions
    /////////////////////////
    /**
     * @dev Public function to mint a new token with metadata
     * @dev Reverts if the given token ID already exists
     * @param _owner The address that will own the minted token
     * @param _tokenId uint256 ID of the token to be minted by the msg.sender(creator)
     * @param _metadata string of meta data, IPFS hash
     */
    function mintWithMetadata(address _owner, uint256 _tokenId, string _metadata) public onlyNonexistentToken (_tokenId)
    {
        require(totalSupply < limitChrt);
        require(creatorAddr == _owner);
        
        _setTokenOwner(_tokenId, _owner);
        _addTokenToOwnersList(_owner, _tokenId);
        _insertTokenMetadata(_tokenId, _metadata);

        artworkGroup[_tokenId] = _owner;
        totalSupply = totalSupply.add(1);
        emit Minted(_owner, _tokenId);
    }

    /**
     * @dev Public function to add created token id in group
     * @param _owner The address that will own the minted token
     * @param _tokenId uint256 ID of the token to be minted by the msg.sender(creator)
     * @return _tokenId uint256 ID of the token 
     */
    function group(address _owner, uint _tokenId) public returns (uint) {
        require(_tokenId >= 0 && _tokenId <= limitChrt);
        artworkGroup[_tokenId] = _owner;    
        return _tokenId;
    }

    
    /////////////////////////
    // Internal, helper functions
    /////////////////////////
    function _setTokenOwner(uint _tokenId, address _owner) internal
    {
        tokenIdToOwner[_tokenId] = _owner;
    }

    function _addTokenToOwnersList(address _owner, uint _tokenId) internal
    {
        listOfOwnerTokens[_owner].push(_tokenId);
    }

    function _insertTokenMetadata(uint _tokenId, string _metadata) internal
    {
        referencedMetadata[_tokenId] = _metadata;
    }
    
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
    if (a == 0) {
      return 0;
    }
    c = a * b;
    assert(c / a == b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    // uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return a / b;
  }

  /**
  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
    c = a + b;
    assert(c >= a);
    return c;
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":false,"inputs":[{"name":"_owner","type":"address"},{"name":"_tokenId","type":"uint256"}],"name":"group","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"_totalSupply","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_owner","type":"address"},{"name":"_tokenId","type":"uint256"},{"name":"_metadata","type":"string"}],"name":"mintWithMetadata","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"name":"_owner","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"tokenMetadata","outputs":[{"name":"_metadata","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"_balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getArtworkGroup","outputs":[{"name":"","type":"address[52]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_to","type":"address"},{"indexed":true,"name":"_tokenId","type":"uint256"}],"name":"Minted","type":"event"}]

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

bzzr://2bb333ea74720518a43f0693e497dd5424b0560e8ea25a374801646e04620028