Contract 0x83Ff0d70bF7eA1955920c136D8a2915BCA5a53B6 1

 
 
Txn Hash
Method
Block
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Value
0x6addf4ecc2b7196e0ba0bbc6e2dcc198ca4cae8cfd29f478c9af2d7be58cddc2Safe Transfer Fr...160848562022-11-30 19:21:351 hr 29 mins ago0x413c99ed1462ca0b83ad75937f7277875c7bbd13 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00138228 21.16080486
0xcb35a07c9f79a1e6caf5ebcaa38119a5a3ff3031d9da68b076f9f9895c91fb65Set Approval For...160819472022-11-30 9:36:1111 hrs 14 mins agoENS Name dapppunk.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0005396 11.69182833
0x8e26b28220e341834784150aad9701deaafcd358da1cf8a7f09c2c403666097fSet Approval For...160664242022-11-28 5:34:472 days 15 hrs ago0x580a613543b4aab1288cc85cb246b9d627282446 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00052458 11.37227182
0x79a0e8dbce4ebe346a3d1c4ce23d8793728d13f0d9fe9f8f526fc0e8b9a3e5eaSet Approval For...160646102022-11-27 23:30:472 days 21 hrs ago0xb5336ec44a42c893013cf0e63213a1784aec3a4f IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00050346 10.91445821
0x67eff14035b5ce6275388fa09eb2a9952bf22a3faf3fc474a1ba6c3838d7eb95Set Approval For...160572472022-11-26 22:49:593 days 22 hrs agoENS Name fb3c.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0004962 10.75713891
0x900b8af5d6673c561b3048160f589333de032a62b9c100f210a12cbe75c008c0Set Approval For...160560792022-11-26 18:54:114 days 1 hr ago0x4716a6058e7916be509f6d93a8986867e6ac8fde IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00052044 11.2825364
0x0cc841be8ccff321a19b90b4ed0b71d6825e8991d59383039bc3c16a5a07a7a9Safe Transfer Fr...160556932022-11-26 17:36:474 days 3 hrs agoENS Name paulpistol44.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00076223 11.67806255
0xa0c3db123ab387fc4aa6a24382cdb89cdb99e5e94cc495c3a5002fd3b294de91Set Approval For...160256902022-11-22 12:57:238 days 7 hrs ago0x6fd9d1cae4eacde36980bd8080e76b8b820c3510 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0006999 15.17318265
0xa4b7f9d50d3ffca9ed215e1be5db7ef3da0c9de90db5be001ccb39b9aaf4c275Safe Transfer Fr...160207572022-11-21 20:24:479 days 25 mins ago0x413c99ed1462ca0b83ad75937f7277875c7bbd13 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0006412 13.3110741
0x2567a54946fd4b892312aea72fd273857bad5bbe463c8c00c78e78ee942dc980Set Approval For...160190032022-11-21 14:31:599 days 6 hrs ago0x2cd79aa0c0fa1b42258d0cba65cf181e7ba20185 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00130446 28.2793462
0x06b2ae0d705993ca396d2d3ee6e7205a3165f8cbb36dc02a2d45af16e846fbe3Set Approval For...159994422022-11-18 20:59:4711 days 23 hrs ago0xbe5afc63dc7b7dcd95631d6e37bbe44e9672a9df IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00055382 12
0xca24ce348658d28cad0a8972953ebc926613d09559a1047acf017ad3239dad1bSet Approval For...159985592022-11-18 18:02:1112 days 2 hrs ago0x30762e50c0307dbf709b79e5d3dc043e1fa7bdff IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00060854 13.18570563
0xbc5b2a5c2a14e2b1e626532c3c123563f2b42be5022838343c960d1dec0f592dSet Approval For...159833372022-11-16 14:59:3514 days 5 hrs agoENS Name mattdoogue.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00078183 16.94034883
0x9abb5bde6c10338d293425a2cb064545775292a963fb9cd4bdc9135229f30878Safe Transfer Fr...159820772022-11-16 10:45:3514 days 10 hrs agoENS Name businessneeds.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00054683 12.61188503
0x637c36873b0e9124a142deaa68f4e42d90c6f1e072c1fd542515f68b3d2bf635Safe Transfer Fr...159820732022-11-16 10:44:4714 days 10 hrs agoENS Name businessneeds.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00085024 13.02878418
0xc3ed208b3adaf561a85a1d3880fcdd3fd3b526d550e2cfa432457de953751f18Set Approval For...159689282022-11-14 14:39:4716 days 6 hrs ago0xc7a8ba1b471ef355c897d1c3555c4e940e317133 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00199212 43.18689108
0x7af9d0e84881ca1d25fa6cfc7a6269208ed6cfe1414d1967667114a480e1b16fSafe Transfer Fr...159580072022-11-13 2:05:5917 days 18 hrs ago0x65ba4f92d7dfa813ddbd849d9faf38a723dd9b12 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00069961 10.71863942
0xe95d4c7566ab1c50cd1fc51cd7b134747580fe8a307157261e6983aad949dee2Set Approval For...159512012022-11-12 3:18:2318 days 17 hrs ago0x19a68e5a24ead474cdbd1e74864317cc7ac3afa1 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00070035 15.18280111
0x97314f250ff536f3af796f34a3a615e57d92b32c74033c1372914e06b7f503afSafe Transfer Fr...159053712022-11-05 17:41:4725 days 3 hrs ago0x6fd9d1cae4eacde36980bd8080e76b8b820c3510 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00058905 12.2314357
0xfb159d9094578fba30f0de17d8bf32b2b6d06eab391daddc41991f4ce7cfa248Set Approval For...159044162022-11-05 14:28:5925 days 6 hrs ago0xdfe731f05eb56479cd10cb1f89089fffd243e8a7 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00062043 13.45032772
0x990d92dbe858178206f6959ef766da47d7b004208317da5328b51cddc921c4f9Set Approval For...159014052022-11-05 4:23:2325 days 16 hrs agoENS Name etupac.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00072573 15.73297378
0x1f223ab08e134e81d0dc45742c46f33891f4d6e1da13d313c8cba64691f0cce3Set Approval For...159014012022-11-05 4:22:3525 days 16 hrs agoENS Name etupac.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0006927 14.9897918
0x0aa346de6b4c4a2149ea98abf249f782d14e08bad5fb9df5b2e8b7ad9eb7aeceSet Approval For...159014012022-11-05 4:22:3525 days 16 hrs agoENS Name etupac.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.0006918 14.9897918
0x690c6454b08bf280619602c8c254fc88971e789c03e71260d01d017a0a581efdSafe Transfer Fr...158909202022-11-03 17:16:2327 days 3 hrs ago0x413c99ed1462ca0b83ad75937f7277875c7bbd13 IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00134117 27.8419752
0x02574b582988e3f9d31bd792bd57520cb864ddc7d0ef3dfdda00f45ad5c0ddc4Set Approval For...158875632022-11-03 5:59:2327 days 14 hrs agoENS Name playalldave.eth IN  0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60 Ether0.00068467 14.83527185
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0x76650c276a03775c7f0f521c0ec113c02b6b732c8230d060ed2cc2e17c0cb7fc145858232022-04-14 20:58:08229 days 23 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c310.69 Ether
0xa036451cda6c2e7893f37e8bac586588cc5526c7796bae06d3d4887be6e789da145858182022-04-14 20:56:40229 days 23 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e71.86 Ether
0x7a3a41207a99735aa478dbae14f78ceae2cc3b66a8399cceb9b8aed5688b22ce141743442022-02-09 21:35:37293 days 23 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e5.24 Ether
0x0487e653d0b5d98bdfcd367185d04ac45b3f78a37f9a19de40f9ab56603a7285141743292022-02-09 21:32:27293 days 23 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c32.41 Ether
0x9bd11204ec18cd138d513f16acea94a37df4a75a919897149dd00709bfa213d6141361612022-02-04 0:05:10299 days 20 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e48 Ether
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0x5384f853aa1bad7b9002fe85c20f9c5cd79ab68ffa91f7c36aebdf4b34fe923f141361102022-02-03 23:55:25299 days 20 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x54edff070c66fa5775619625e6efd8aa314ca9b22 Ether
0xb55fc1d4bd7152931cb515446c8244591e186747d89138ecc85d90ca3c16f1ed137603522021-12-07 19:23:33358 days 1 hr ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e1.928 Ether
0xedd041520f6b7ff38f677d9af5576209e9ec0548b2e208abf132df2ea6c98e58137603312021-12-07 19:19:43358 days 1 hr ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c30.482 Ether
0x9087818308d7280e541637fa33a6e22a6212ec9dceeaae8e1bd806a9c49421c5136803522021-11-25 0:28:46370 days 20 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e11.2 Ether
0xc819307ab567ef54856fc1bba23c1cfb0f1d32b080dc0f941b9eeeaa7d6e6267136803352021-11-25 0:25:42370 days 20 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c32.8 Ether
0x2eacd7df68d36de1ffc297de3df9eb8234dd2eec41fbc1dd8de6b63bc379c04d136623472021-11-22 4:21:07373 days 16 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e16 Ether
0x8624c0f25f6c9dc7b00675a277b523b02eb0ab7244ce2e98694339fb449a9d83136623272021-11-22 4:17:10373 days 16 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c34 Ether
0xb0da1e08f977289e08ae4fca3d1e8dd40262a56dc5d9356cd5d8832bfb5cdae8136481992021-11-19 22:35:00375 days 22 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60xac85b2e1d2d1a178679ef1d84bf5fa6d8ca1d46e16 Ether
0x1932e0176550bb18308161651d0f030a2d7d36d7899f7e8cd45ba170ed5ba8f5136481562021-11-19 22:24:21375 days 22 hrs ago 0x83ff0d70bf7ea1955920c136d8a2915bca5a53b60x790937be495a0fd8f6c1ef79c55c1cf40aaf66c34 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
MojoHeads

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 1500 runs

Other Settings:
default evmVersion
File 1 of 20 : MojoHeads.sol
//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;


import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

import "./interface/IAccessPass.sol";


contract MojoHeads is ERC721, AccessControl, IERC2981, Ownable {

    using Counters for Counters.Counter;
    Counters.Counter private campaignCounter;

    Counters.Counter private artistTokensCounter;

    enum CampaignState {PENDING, READY, PRESALE, ONGOING, PAUSED, FINISH}

    struct Campaign {
        CampaignState state;
        address accessPassAddress;
        uint256 preSalePassId;
        uint256 vipSalePassId;
        uint256 maxPresaleTokens;
        uint256 maxOngoingTokens;
        uint256 totalSupply;
    }

    struct CampaignPrice {
        uint256 unitPricePresale;
        uint256 unitPriceVipSale;
        uint256 unitPriceStartPublicSale;
        uint256 unitPriceEndPublicSale;
        uint256 totalBlockUntilUnitPriceEnd;
        uint256 publicSaleStartBlock;
    }

    struct CampaignPriceInput {
        uint256 unitPricePresale;
        uint256 unitPriceVipSale;
        uint256 unitPriceStartPublicSale;
        uint256 unitPriceEndPublicSale;
        uint256 totalBlockUntilUnitPriceEnd;
    }

    mapping(uint256 => uint256[]) availableHashList;

    event CampaignRegisteredEvent(
        uint256 indexed campaignId
    );

    event CampaignUpdatedEvent(
        uint256 indexed campaignId
    );

    event CampaignStateChangedEvent(
        uint256 indexed campaignId,
        CampaignState state
    );

    event CampaignNewHashAddedEvent(
        uint256 indexed campaignId
    );

    event WithdrawEth(
        uint256 indexed amount,
        address indexed receiver
    );

    event WithdrawERC20(
        address indexed token,
        uint256 indexed amount,
        address indexed receiver
    );

    mapping(uint256 => Campaign) public campaignList;
    mapping(uint256 => CampaignPrice) public campaignPriceList;
    mapping(uint256 => bytes32) public tokenHashMapping;
    mapping(bytes32 => uint256) public hashTokenMapping;
    mapping(uint256 => uint256) public tokenToArtistMapping;
    mapping(uint256 => address) public tokenRoyaltyMapping;

    address public defaultRoyaltyAddress;
    uint256 public royaltyPercentage;
    uint256 public artistTokenReserve;
    uint256 public maxSupply;
    uint256 public totalSupply;
    bytes32 public constant CAMPAIGN_ADMIN_ROLE = keccak256("CAMPAIGN_ADMIN");
    bytes32 public constant WITHDRAW_ROLE = keccak256("WITHDRAW");

    string private _baseURIextended = "https://artist.mojoheads.com/meta/";

    constructor(string memory name_, string memory symbol_, uint256 artistTokenReserve_, uint256 royaltyPercentage_, address defaultRoyaltyAddress_, uint256 maxSupply_) ERC721(name_, symbol_) {
        require(royaltyPercentage_ <= 10000, "royaltyPercentage_ must be lte 10000.");
        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
        _setupRole(CAMPAIGN_ADMIN_ROLE, _msgSender());
        _setupRole(WITHDRAW_ROLE, _msgSender());
        _setRoleAdmin(WITHDRAW_ROLE, DEFAULT_ADMIN_ROLE);
        artistTokenReserve = artistTokenReserve_;
        royaltyPercentage = royaltyPercentage_;
        defaultRoyaltyAddress = defaultRoyaltyAddress_;
        maxSupply = maxSupply_;
    }

    function register(address accessPassAddress,
        uint256 preSalePassId,
        uint256 vipSalePassId,
        CampaignPriceInput memory campaignPriceInput,
        uint256 maxPresaleTokens,
        uint256 maxOngoingTokens) public onlyRole(CAMPAIGN_ADMIN_ROLE) returns (uint256) {

        campaignCounter.increment();
        uint256 campaignId = campaignCounter.current();
        campaignList[campaignId].state = CampaignState.PENDING;
        campaignList[campaignId].accessPassAddress = accessPassAddress;
        campaignList[campaignId].preSalePassId = preSalePassId;
        campaignList[campaignId].vipSalePassId = vipSalePassId;

        campaignList[campaignId].maxPresaleTokens = maxPresaleTokens;
        campaignList[campaignId].maxOngoingTokens = maxOngoingTokens;

        campaignPriceList[campaignId].unitPricePresale = campaignPriceInput.unitPricePresale;
        campaignPriceList[campaignId].unitPriceVipSale = campaignPriceInput.unitPriceVipSale;
        campaignPriceList[campaignId].unitPriceStartPublicSale = campaignPriceInput.unitPriceStartPublicSale;
        campaignPriceList[campaignId].unitPriceEndPublicSale = campaignPriceInput.unitPriceEndPublicSale;
        campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd = campaignPriceInput.totalBlockUntilUnitPriceEnd;

        emit CampaignRegisteredEvent(
            campaignId
        );

        return campaignId;
    }

    function finishCampaign(uint256 campaignId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.PAUSED || campaignList[campaignId].state == CampaignState.ONGOING, "Campaign should be started.");
        campaignList[campaignId].state = CampaignState.FINISH;

        emit CampaignStateChangedEvent(
            campaignId,
            CampaignState.FINISH
        );
    }

    function setCampaignReady(uint256 campaignId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.PENDING, "Campaign should be pending.");
        campaignList[campaignId].state = CampaignState.READY;

        emit CampaignStateChangedEvent(
            campaignId,
            CampaignState.READY
        );
    }


    function startPresale(uint256 campaignId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.READY
        || campaignList[campaignId].state == CampaignState.ONGOING
            || campaignList[campaignId].state == CampaignState.PAUSED, "Campaign should be READY, PAUSED or ONGOING.");

        campaignList[campaignId].state = CampaignState.PRESALE;

        emit CampaignStateChangedEvent(
            campaignId,
            CampaignState.PRESALE
        );
    }

    function startCampaign(uint256 campaignId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.READY
        || campaignList[campaignId].state == CampaignState.PAUSED
            || campaignList[campaignId].state == CampaignState.PRESALE, "Campaign should be READY or PAUSED.");

        campaignList[campaignId].state = CampaignState.ONGOING;
        campaignPriceList[campaignId].publicSaleStartBlock = block.number;

        emit CampaignStateChangedEvent(
            campaignId,
            CampaignState.ONGOING
        );
    }


    function pauseCampaign(uint256 campaignId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.ONGOING
            || campaignList[campaignId].state == CampaignState.PRESALE, "Campaign should be ONGOING.");

        campaignList[campaignId].state = CampaignState.PAUSED;

        emit CampaignStateChangedEvent(
            campaignId,
            CampaignState.PAUSED
        );
    }

    function update(uint256 campaignId, address accessPassAddress,
        uint256 preSalePassId,
        uint256 vipSalePassId,
        CampaignPriceInput memory campaignPriceInput,
        uint256 maxPresaleTokens,
        uint256 maxOngoingTokens) public onlyRole(CAMPAIGN_ADMIN_ROLE) returns (uint256) {

        campaignList[campaignId].accessPassAddress = accessPassAddress;
        campaignList[campaignId].preSalePassId = preSalePassId;
        campaignList[campaignId].vipSalePassId = vipSalePassId;
        campaignList[campaignId].maxPresaleTokens = maxPresaleTokens;
        campaignList[campaignId].maxOngoingTokens = maxOngoingTokens;

        campaignPriceList[campaignId].unitPricePresale = campaignPriceInput.unitPricePresale;
        campaignPriceList[campaignId].unitPriceVipSale = campaignPriceInput.unitPriceVipSale;
        campaignPriceList[campaignId].unitPriceStartPublicSale = campaignPriceInput.unitPriceStartPublicSale;
        campaignPriceList[campaignId].unitPriceEndPublicSale = campaignPriceInput.unitPriceEndPublicSale;
        campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd = campaignPriceInput.totalBlockUntilUnitPriceEnd;

        emit CampaignUpdatedEvent(
            campaignId
        );

        return campaignId;
    }

    function mapTokenToArtistBatch(uint256 campaignId, uint256 [] calldata tokenIdList, uint256 [] calldata artistTokenList) public onlyRole (CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.PENDING, "Cannot add hash to Started campaign");
        require(tokenIdList.length == artistTokenList.length, "tokenIdList and artistTokenList must be in same length");
        campaignList[campaignId].totalSupply += tokenIdList.length;
        for (uint i = 0; i < tokenIdList.length; i++) {
            tokenToArtistMapping[tokenIdList[i]] = artistTokenList[i];
            availableHashList[campaignId].push(tokenIdList[i]);
        }
    }

    function mint(uint256 campaignId, uint256 amount, address receiver) public payable {
        if (campaignList[campaignId].state == CampaignState.PRESALE) {
            require(amount <= campaignList[campaignId].maxPresaleTokens, "Cannot mint more than allowed in presale.");
        } else {
            require(amount <= campaignList[campaignId].maxOngoingTokens, "Cannot mint more than allowed.");
        }

        uint256 totalCost = 0;

        for (uint i; i < amount; i++) {
            uint256 price = _checkCampaignStateForMinting(campaignId);
            totalCost = totalCost + price;
            _randomMint(campaignId, receiver);
        }

        require(msg.value >= totalCost, "Insufficient funds.");

        if (msg.value > totalCost) {
            payable(msg.sender).transfer(msg.value - totalCost);
        }
    }

    function getOngoingPrice(uint256 campaignId) public view returns (uint256) {
        require(campaignList[campaignId].state == CampaignState.ONGOING, "Campaign is not started yet.");
        uint256 blockPasted = block.number - campaignPriceList[campaignId].publicSaleStartBlock;

        if (blockPasted > campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd) {
            blockPasted = campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd;
        }
        if (campaignPriceList[campaignId].unitPriceEndPublicSale > campaignPriceList[campaignId].unitPriceStartPublicSale) {
            return campaignPriceList[campaignId].unitPriceStartPublicSale + (campaignPriceList[campaignId].unitPriceEndPublicSale - campaignPriceList[campaignId].unitPriceStartPublicSale) / campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd * blockPasted;
        } else {
            return campaignPriceList[campaignId].unitPriceStartPublicSale - (campaignPriceList[campaignId].unitPriceStartPublicSale - campaignPriceList[campaignId].unitPriceEndPublicSale) / campaignPriceList[campaignId].totalBlockUntilUnitPriceEnd * blockPasted;
        }
    }
    
    function _checkCampaignStateForMinting(uint256 campaignId) internal returns (uint256) {
        if (campaignList[campaignId].state == CampaignState.PRESALE) {
            IAccessPass accessPass = IAccessPass(campaignList[campaignId].accessPassAddress);
            if (accessPass.balanceOf(msg.sender, campaignList[campaignId].vipSalePassId) > 0) {
                accessPass.burn(msg.sender, campaignList[campaignId].vipSalePassId, 1);
                return campaignPriceList[campaignId].unitPriceVipSale;
            } else if (accessPass.balanceOf(msg.sender, campaignList[campaignId].preSalePassId) > 0) {
                accessPass.burn(msg.sender, campaignList[campaignId].preSalePassId, 1);
                return campaignPriceList[campaignId].unitPricePresale;
            } else {
                revert("No Access token.");
            }

        } else {
            return getOngoingPrice(campaignId);
        }
    }

    function adminMint(uint256 campaignId, uint256 amount, address receiver) public payable onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.READY, "Must be in ready state.");
        require(amount <= campaignList[campaignId].maxPresaleTokens, "Cannot mint more than allowed in presale.");

        uint256 totalCost = 0;

        for (uint i; i < amount; i++) {
            uint256 price = _checkCampaignStateForAdminMinting(campaignId);
            totalCost = totalCost + price;
            _randomMint(campaignId, receiver);
        }

        require(msg.value >= totalCost, "Insufficient funds.");

        if (msg.value > totalCost) {
            payable(msg.sender).transfer(msg.value - totalCost);
        }
    }

    function _checkCampaignStateForAdminMinting(uint256 campaignId) internal returns (uint256) {
        IAccessPass accessPass = IAccessPass(campaignList[campaignId].accessPassAddress);
        if (accessPass.balanceOf(msg.sender, campaignList[campaignId].vipSalePassId) > 0) {
            accessPass.burn(msg.sender, campaignList[campaignId].vipSalePassId, 1);
            return campaignPriceList[campaignId].unitPriceVipSale;
        } else if (accessPass.balanceOf(msg.sender, campaignList[campaignId].preSalePassId) > 0) {
            accessPass.burn(msg.sender, campaignList[campaignId].preSalePassId, 1);
            return campaignPriceList[campaignId].unitPricePresale;
        } else {
            revert("No Access token.");
        }
    }

    function preMintWithTokenId(uint256 campaignId, address receiver, uint256 tokenId, uint256 artistTokenId) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state == CampaignState.PENDING, "Campaign is not PENDING.");
        tokenToArtistMapping[tokenId] = artistTokenId;
        _mintToken(tokenId, receiver);
    }

    function preMint(uint256 campaignId, address receiver) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state != CampaignState.PENDING, "Campaign is not ready yet.");
        _randomMint(campaignId, receiver);
    }

    function preMintBatch(uint256 campaignId, address[] memory receiverList) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(campaignList[campaignId].state != CampaignState.PENDING, "Campaign is not ready yet.");
        require(receiverList.length <= availableHashList[campaignId].length, "Campaign does not have enough hashes.");
        for (uint i = 0; i < receiverList.length; i++) {
            _randomMint(campaignId, receiverList[i]);
        }
    }

    function _randomMint(uint256 campaignId, address receiver) private {
        require(availableHashList[campaignId].length > 0, "All NFTs are sold.");
        uint256 random;
        if (availableHashList[campaignId].length > 1) {
            random = uint256(keccak256(abi.encodePacked(availableHashList[campaignId].length, blockhash(block.number), block.difficulty))) % availableHashList[campaignId].length;
        } else {
            random = 0;
        }

        uint256 tokenId = availableHashList[campaignId][random];
        availableHashList[campaignId][random] = availableHashList[campaignId][availableHashList[campaignId].length - 1];
        availableHashList[campaignId].pop();

        _mintToken(tokenId, receiver);
    }

    function _mintToken(uint256 tokenId, address receiver) private {
        totalSupply += 1;
        require(totalSupply <= maxSupply, "Cannot mint more than maxSupply.");
        _mint(receiver, tokenId);
    }

    function mintArtistToken(address to) public onlyRole(CAMPAIGN_ADMIN_ROLE) {
        artistTokensCounter.increment();
        uint256 tokenId = artistTokensCounter.current();
        require(tokenId <= artistTokenReserve, "Artist token id reserves finished.");
        _mint(to, tokenId);
        tokenRoyaltyMapping[tokenId] = defaultRoyaltyAddress;
    }

    function withdrawERC20(address token, uint256 amount, address payable receiver) external onlyRole(WITHDRAW_ROLE) {
        IERC20(token).transfer(receiver, amount);
        emit WithdrawERC20(token, amount, receiver);
    }

    function withdrawEth(uint256 amount, address payable receiver) external onlyRole(WITHDRAW_ROLE) {
        receiver.transfer(amount);
        emit WithdrawEth(amount, receiver);
    }

    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721, AccessControl, IERC165) returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId
        || interfaceId == type(IERC721).interfaceId
        || interfaceId == type(IERC2981).interfaceId
        || interfaceId == type(ERC721URIStorage).interfaceId;
    }

    function campaignCount() public view returns (uint256) {
        return campaignCounter.current();
    }

    function getCampaign(uint256 id) public view returns (Campaign memory) {
        return campaignList[id];
    }

    function getCampaignPrice(uint256 id) public view returns (CampaignPrice memory) {
        return campaignPriceList[id];
    }

    function royaltyInfo(uint256 tokenId, uint256 salePrice) external view override returns (address, uint256) {
        uint256 artistTokenId = tokenToArtistMapping[tokenId];
        address royaltyAddress = tokenRoyaltyMapping[artistTokenId];
        uint256 royaltyAmount = salePrice * royaltyPercentage / 10000;
        if (royaltyAddress == address(0)) {
            return (defaultRoyaltyAddress, royaltyAmount);
        }

        return (royaltyAddress, royaltyAmount);
    }

    function setTokenRoyaltyAddress(uint256 tokenId, address royaltyAddress) external onlyRole(CAMPAIGN_ADMIN_ROLE) {
        require(_exists(tokenId), "Token must be existing to set royalty info.");
        tokenRoyaltyMapping[tokenId] = royaltyAddress;
    }

    function getCampaignHash(uint256 campaignId, uint256 hashIndex) external view returns (bytes32) {
        return tokenHashMapping[availableHashList[campaignId][hashIndex]];
    }

    function getCampaignAvailableHashCount(uint256 campaignId) external view returns (uint256) {
        return availableHashList[campaignId].length;
    }

    function setRoyaltyPercentage(uint256 _royaltyPercentage) external onlyRole(CAMPAIGN_ADMIN_ROLE) {
        royaltyPercentage = _royaltyPercentage;
    }

    function setBaseURI(string memory baseURI_) external onlyRole(CAMPAIGN_ADMIN_ROLE) {
        _baseURIextended = baseURI_;
    }

    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId),"URI query for nonexistent token");
        return string(abi.encodePacked(_baseURIextended, Strings.toString(tokenId)));
    }
}

File 2 of 20 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 3 of 20 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 4 of 20 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 5 of 20 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

File 6 of 20 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 7 of 20 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 8 of 20 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

File 9 of 20 : ERC721URIStorage.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";

/**
 * @dev ERC721 token with storage based token URI management.
 */
abstract contract ERC721URIStorage is ERC721 {
    using Strings for uint256;

    // Optional mapping for token URIs
    mapping(uint256 => string) private _tokenURIs;

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = _baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }

        return super.tokenURI(tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual override {
        super._burn(tokenId);

        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }
    }
}

File 10 of 20 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

File 11 of 20 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

File 12 of 20 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

File 13 of 20 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 14 of 20 : IERC1155.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

File 15 of 20 : IERC2981.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Called with the sale price to determine how much royalty is owed and to whom.
     * @param tokenId - the NFT asset queried for royalty information
     * @param salePrice - the sale price of the NFT asset specified by `tokenId`
     * @return receiver - address of who should be sent the royalty payment
     * @return royaltyAmount - the royalty payment amount for `salePrice`
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

File 16 of 20 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

File 17 of 20 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 18 of 20 : IAccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 19 of 20 : AccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    function _grantRole(bytes32 role, address account) private {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 20 of 20 : IAccessPass.sol
//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/access/IAccessControl.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";


interface IAccessPass is IERC1155, IERC2981 {


    function burn(
        address account,
        uint256 id,
        uint256 amount
    ) external;

    function burnBatch(
        address account,
        uint256[] memory ids,
        uint256[] memory amounts
    ) external;

    function mint(
        address account,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) external;

    function mintBatch(
        address[] memory tos,
        uint256[] memory ids,
        uint256 amount,
        bytes memory data
    ) external;

}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 1500
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"uint256","name":"artistTokenReserve_","type":"uint256"},{"internalType":"uint256","name":"royaltyPercentage_","type":"uint256"},{"internalType":"address","name":"defaultRoyaltyAddress_","type":"address"},{"internalType":"uint256","name":"maxSupply_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"CampaignNewHashAddedEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"CampaignRegisteredEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"campaignId","type":"uint256"},{"indexed":false,"internalType":"enum MojoHeads.CampaignState","name":"state","type":"uint8"}],"name":"CampaignStateChangedEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"CampaignUpdatedEvent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"}],"name":"WithdrawERC20","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"}],"name":"WithdrawEth","type":"event"},{"inputs":[],"name":"CAMPAIGN_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WITHDRAW_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"adminMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"artistTokenReserve","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"campaignCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"campaignList","outputs":[{"internalType":"enum MojoHeads.CampaignState","name":"state","type":"uint8"},{"internalType":"address","name":"accessPassAddress","type":"address"},{"internalType":"uint256","name":"preSalePassId","type":"uint256"},{"internalType":"uint256","name":"vipSalePassId","type":"uint256"},{"internalType":"uint256","name":"maxPresaleTokens","type":"uint256"},{"internalType":"uint256","name":"maxOngoingTokens","type":"uint256"},{"internalType":"uint256","name":"totalSupply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"campaignPriceList","outputs":[{"internalType":"uint256","name":"unitPricePresale","type":"uint256"},{"internalType":"uint256","name":"unitPriceVipSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceStartPublicSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceEndPublicSale","type":"uint256"},{"internalType":"uint256","name":"totalBlockUntilUnitPriceEnd","type":"uint256"},{"internalType":"uint256","name":"publicSaleStartBlock","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultRoyaltyAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"finishCampaign","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getCampaign","outputs":[{"components":[{"internalType":"enum MojoHeads.CampaignState","name":"state","type":"uint8"},{"internalType":"address","name":"accessPassAddress","type":"address"},{"internalType":"uint256","name":"preSalePassId","type":"uint256"},{"internalType":"uint256","name":"vipSalePassId","type":"uint256"},{"internalType":"uint256","name":"maxPresaleTokens","type":"uint256"},{"internalType":"uint256","name":"maxOngoingTokens","type":"uint256"},{"internalType":"uint256","name":"totalSupply","type":"uint256"}],"internalType":"struct MojoHeads.Campaign","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"getCampaignAvailableHashCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"uint256","name":"hashIndex","type":"uint256"}],"name":"getCampaignHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getCampaignPrice","outputs":[{"components":[{"internalType":"uint256","name":"unitPricePresale","type":"uint256"},{"internalType":"uint256","name":"unitPriceVipSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceStartPublicSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceEndPublicSale","type":"uint256"},{"internalType":"uint256","name":"totalBlockUntilUnitPriceEnd","type":"uint256"},{"internalType":"uint256","name":"publicSaleStartBlock","type":"uint256"}],"internalType":"struct MojoHeads.CampaignPrice","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"getOngoingPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"hashTokenMapping","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"uint256[]","name":"tokenIdList","type":"uint256[]"},{"internalType":"uint256[]","name":"artistTokenList","type":"uint256[]"}],"name":"mapTokenToArtistBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mintArtistToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"}],"name":"pauseCampaign","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"preMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"address[]","name":"receiverList","type":"address[]"}],"name":"preMintBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"campaignId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"artistTokenId","type":"uint256"}],"name":"preMintWithTokenId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"accessPassAddress","type":"address"},{"internalType":"uint256","name":"preSalePassId","type":"uint256"},{"internalType":"uint256","name":"vipSalePassId","type":"uint256"},{"components":[{"internalType":"uint256","name":"unitPricePresale","type":"uint256"},{"internalType":"uint256","name":"unitPriceVipSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceStartPublicSale","type":"uint256"},{"internalType":"uint256","name":"unitPriceEndPublicSale","type":"uint256"},{"internalType":"uint256","name":"totalBlockUntilUnitPriceEnd","type":"uint256"}],"internalType":"struct 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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

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

-----Decoded View---------------
Arg [0] : name_ (string): MojoHeads
Arg [1] : symbol_ (string): MJH
Arg [2] : artistTokenReserve_ (uint256): 500
Arg [3] : royaltyPercentage_ (uint256): 1000
Arg [4] : defaultRoyaltyAddress_ (address): 0x790937BE495a0FD8f6C1ef79c55C1cF40aAF66c3
Arg [5] : maxSupply_ (uint256): 10500

-----Encoded View---------------
10 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [2] : 00000000000000000000000000000000000000000000000000000000000001f4
Arg [3] : 00000000000000000000000000000000000000000000000000000000000003e8
Arg [4] : 000000000000000000000000790937be495a0fd8f6c1ef79c55c1cf40aaf66c3
Arg [5] : 0000000000000000000000000000000000000000000000000000000000002904
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [7] : 4d6f6a6f48656164730000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [9] : 4d4a480000000000000000000000000000000000000000000000000000000000


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.