Contract 0xED5AF388653567Af2F388E6224dC7C4b3241C544 9

 
 
Txn Hash
Method
Block
From
To
Value
0xc3d7cd7ff6591e57b44d888536adf8e0ed8fa71eabce6057d4acfe54c959352cTransfer From153576302022-08-17 8:22:5216 mins ago0x03875a36d4f20d80c5c7c9534cca98ac92d8a016 IN  Azuki: AZUKI Token0 Ether0.‍00040467 6.‍48723301
0x89f466c11a1479bf24564f0b3a198865edc271880bc702b04c7751d02be7375aSet Approval For...153576222022-08-17 8:20:5318 mins ago0xb203754879bba6578c6d70c3c8196c72820a5707 IN  Azuki: AZUKI Token0 Ether0.‍00032046 6.‍95075128
0x09181ece3dc8968eee9dd30489997ddc04e6b378926491f2adb416ef798c75cdSet Approval For...153573882022-08-17 7:29:121 hr 10 mins ago0xdc455d42e2a31cd8889a7d6de0cb50a87c45b9af IN  Azuki: AZUKI Token0 Ether0.‍00031419 6.‍81476552
0x71776938936e3d9daf9d330db5075920d7f51deb23b3ffe63c92af43b8397de3Set Approval For...153573142022-08-17 7:14:521 hr 24 mins ago0x6f404eae995c9bd2ffcd7f78246aebd8d8a1ba4f IN  Azuki: AZUKI Token0 Ether0.‍00041708 9.‍04643326
0x0fdafde88cdd8c8c0ff52463537df3effb976891f6b7541ca15de6ce7fca7579Set Approval For...153570982022-08-17 6:23:142 hrs 16 mins agoENS Name junze.eth IN  Azuki: AZUKI Token0 Ether0.‍00073579 15.‍93015222
0x0a03966d296d761145abf2c2d41ba62c0e04f458fac8b794439c51a9efad027aSet Approval For...153569622022-08-17 5:51:202 hrs 48 mins agoENS Name bananabullet.eth IN  Azuki: AZUKI Token0 Ether0.‍00031269 12.‍88019352
0x18e9274b780382990f6bd7be738faa6378d4ac83edbe9d1c280758d1ea6e8bfaSet Approval For...153569582022-08-17 5:49:282 hrs 50 mins agoENS Name bananabullet.eth IN  Azuki: AZUKI Token0 Ether0.‍00027976 11.‍52381927
0x77d4928c8a5a7fd80b27b643520da4774458100feec03308cfe38ea990cdc2dbSet Approval For...153569542022-08-17 5:48:582 hrs 50 mins agoENS Name bananabullet.eth IN  Azuki: AZUKI Token0 Ether0.‍0003172 13.‍06587232
0xd43ab4c35b11b1963fa39584600d37b3d536e3a3a90c07f4340ef4d7a143b64dSafe Transfer Fr...153569302022-08-17 5:42:332 hrs 57 mins ago0xf2ff80c5c7f232351dff988bf9eb116acdf9614e IN  Azuki: AZUKI Token0 Ether0.‍00053051 8.‍14342102
0x43686d0a9edf78808ed3fd957bc2bf396d81a6f709c13bed45a0b29bd704f89eSet Approval For...153568812022-08-17 5:30:533 hrs 8 mins ago0x1a9c90ff380f04b1ff8e9f36d4488bab48e82f3c IN  Azuki: AZUKI Token0 Ether0.‍00025537 5.‍53908603
0xeb3c3bacb7123537e91dd8c4db5f58ac74ad7acdf9d30051bb26b957a4ee5445Set Approval For...153566642022-08-17 4:42:523 hrs 56 mins agoENS Name lowkissed.eth IN  Azuki: AZUKI Token0 Ether0.‍00024663 5.‍34951367
0xc123e590b6b1089b49894c38ae289a868d73c1f71fc05537e2f05fe64b58c926Safe Transfer Fr...153565832022-08-17 4:26:474 hrs 12 mins ago0xa82fb6f7f9dccfbcab9d99addeb884033af11b86 IN  Azuki: AZUKI Token0 Ether0.‍0002616 4.‍95040447
0x8e8a5279d154e71affc1c3546ffc08c2a01635cf4408f02c63b9a9d29bf1f8baTransfer From153565202022-08-17 4:15:254 hrs 24 mins ago0x3f8c0318eff42216767bbc71a2eac9b93cddcde5 IN  Azuki: AZUKI Token0 Ether0.‍00046946 7.‍52593598
0x16fa3440685bed999ccec82df7d285cdedff1d09f9e2b9984c6a6ac51b72859bSafe Transfer Fr...153565122022-08-17 4:13:174 hrs 26 mins agoENS Name mosu.eth IN  Azuki: AZUKI Token0 Ether0.‍00045844 8.‍67517295
0x91ac491036292c492cc0165fec1f35172cbf5793e5ffae595a24e0d1b00e424eSet Approval For...153564622022-08-17 3:59:494 hrs 39 mins ago0x44bdb0d06618257b4002b5dca0276386a9f36e9e IN  Azuki: AZUKI Token0 Ether0.‍00031049 6.‍73447389
0x5cc58661e774345522c8f8ece9e669baddd9bcd375b280847ed3d9d1357fe75dSet Approval For...153563182022-08-17 3:30:255 hrs 9 mins ago0xa4d258e480c04fc38cdf0d142203a00e95a47a59 IN  Azuki: AZUKI Token0 Ether0.‍00051364 11.‍14083707
0xcd5f2b3c1d22c36654653c89c218179deb62519506cfcdf1603ff10df8bdfd3aSafe Transfer Fr...153562942022-08-17 3:24:265 hrs 15 mins ago0x00636704d11f505cfa43bfd466a5dd3c63e11657 IN  Azuki: AZUKI Token0 Ether0.‍00066994 13.‍94736717
0x8caec336b82b361281f8b920572148fe6a35dce7b5801246572e0811ad5aabd6Set Approval For...153561322022-08-17 2:48:315 hrs 51 mins agoENS Name xylus.eth IN  Azuki: AZUKI Token0 Ether0.‍00040818 8.‍83732619
0xe3b2316c9ed21ce783d352483ec4399c665e84b98a5deb3ad30ebc047373c333Set Approval For...153560102022-08-17 2:18:146 hrs 21 mins agoENS Name xylus.eth IN  Azuki: AZUKI Token0 Ether0.‍00053958 11.‍68213591
0xd28dfcf99cf5ab506949a305874dfbb437e2f5ac64e4f8b5ea62d532c72569f4Set Approval For...153559822022-08-17 2:10:166 hrs 29 mins agoENS Name xylus.eth IN  Azuki: AZUKI Token0 Ether0.‍00043752 9.‍48972749
0xb2b90bc68d79a624758192f44d826abcab5bdb6b883ca74ca59613e8a54f91f9Set Approval For...153557432022-08-17 1:09:377 hrs 30 mins ago0x906607b298df0efc07234258ab0e27a4dfd62be6 IN  Azuki: AZUKI Token0 Ether0.‍00691575 150
0x44da68f9fcb42e11359882e324bd120346e579daabe44e2793cda8d0c4ba5c2aSafe Transfer Fr...153556452022-08-17 0:46:547 hrs 52 mins ago0x824160f2aae7bae31f7719582c0a3f528a60fe6d IN  Azuki: AZUKI Token0 Ether0.‍00060753 11.‍49635186
0xf8990297b4a10c24bac585abf879463c9e39daebefdff7eccaf9695567bcef8aTransfer From153556332022-08-17 0:44:497 hrs 54 mins ago0x6534b01e9edad6f2ca40767980c0263912ee2f15 IN  Azuki: AZUKI Token0 Ether0.‍0011424918.‍31504187
0x32fd2d9f2cf659ae2b592d1f15c6f85c9747180788fc3480e44414ebc9025381Safe Transfer Fr...153556152022-08-17 0:40:037 hrs 59 mins ago0xa82fb6f7f9dccfbcab9d99addeb884033af11b86 IN  Azuki: AZUKI Token0 Ether0.‍00077698 14.‍70281665
0x12184f8ad228e8b6ed0c2c5aceed97f594cf1c0850cc979c416aafcd66f1fae5Safe Transfer Fr...153556112022-08-17 0:38:448 hrs agoENS Name busyasfxck.eth IN  Azuki: AZUKI Token0 Ether0.‍00068001 12.‍86794683
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OVERVIEW

A brand for the metaverse. Built by the community.Azuki starts with a collection of 10,000 avatars that give you membership access to The Garden: a corner of the internet where artists, builders, and web3 enthusiasts meet to create a decentralized future. Azuki holders rec...

Latest 15 internal transactions
Parent Txn Hash Block From To Value
0x146d8d6aa29d4a426b9dd271a6ca97d3d12f7857b6502f0079380ab407dc2b4b140522342022-01-22 0:56:46207 days 7 hrs ago Azuki: AZUKI TokenAzuki: Deployer8.‍5 Ether
0x635dbfbe84425178ddb069a708daa2284cef12a8e0695f14e32a6589ab384447140206392022-01-17 3:39:55212 days 4 hrs ago Azuki: AZUKI TokenAzuki: Deployer541.‍5 Ether
0xf7e7f5351b9fb831201d1150311002545a5c3951e931cf6041f7f67a79d9c89d139923882022-01-12 18:39:05216 days 14 hrs ago Azuki: AZUKI TokenAzuki: Deployer8,700 Ether
0xe5173e3ae512930d2044d1cdaf19976e8a3c3dd0bb2a1adb54bdfaa497a86e83139922152022-01-12 18:02:19216 days 14 hrs ago Azuki: AZUKI Token0x2dd3d76d080d511f6698e23eb9035e723b03ca632 Ether
0x705f894b9797fafd193c80571f485b025a845a09843b9776916cd4c89dba845b139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x7efbe505da71d8b6c8d36495e62db7ae8181bca14 Ether
0x29b191bb1ca06d70f2628cf53b270f902e8ffb6f218b2b24a1f3857616af21e7139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x17e04418f620a909866144e3cdf960be9c7a49664 Ether
0xee1a23a8f6e859e2b8d70505f46b4667ccdd71de942b96471f4bfc1beaea3ff1139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x9bbf62765e39a3dc7d8788225e50f4371f62c6914 Ether
0x2ff4c18b632b693943f79ef211e2631505a3ee8975133c109e16615938f64ea7139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0xf2bf76baf20ee44df7ca41691412761fc42aa7204 Ether
0x86ef814fe31ea5ff9cd3ee28dc964eaaae8cb0e7a9e04fadb339ad1461dc1505139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0xc204a5f2b15214779d7c57807adb2ae13b4c7b0d4 Ether
0xbfd3bbcc68a67add2869c8a51029d339ad2fb687c216d975fbc968a84e46506f139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI TokenENS Name empa.eth4 Ether
0x2b01647bfaaa0d07ac9e939a5cff410adaa5e136b26635ed2ab62c5eea8ecf4d139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x73eb5bb62e6909850cb2fe2a4a6928a7948c6fe84 Ether
0x1a341e9fe8414de2858516e360bed4696c5dc7784cdc020a3d4cfb62d864a37a139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0xd825be79abacbcf1f07511a720632d1ec4b779604 Ether
0xd9e60fcdf1f2539ead204068c0d6f216de8ece44702cc5b1c5b2220ac8e16f91139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0xef7374638e56b880cf3449b9ad5c59aee6d007e64 Ether
0x474a583c8b6467d6a91279aeca9d1541d09a041f00f724d00cc16c9ee0b459cf139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x3ef0c20f3c6e62580c862d337f9e4f837e1df2ac4 Ether
0x158782dc55103b26ed6f337ce0c79057257a7f2e8d97f56d2defc3beec009f53139922142022-01-12 18:01:55216 days 14 hrs ago Azuki: AZUKI Token0x88c9aff5327f7c1df81ea858c4865e5378984cff4 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
Azuki

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 500 runs

Other Settings:
default evmVersion
File 1 of 13 : Azuki.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "./ERC721A.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

contract Azuki is Ownable, ERC721A, ReentrancyGuard {
  uint256 public immutable maxPerAddressDuringMint;
  uint256 public immutable amountForDevs;
  uint256 public immutable amountForAuctionAndDev;

  struct SaleConfig {
    uint32 auctionSaleStartTime;
    uint32 publicSaleStartTime;
    uint64 mintlistPrice;
    uint64 publicPrice;
    uint32 publicSaleKey;
  }

  SaleConfig public saleConfig;

  mapping(address => uint256) public allowlist;

  constructor(
    uint256 maxBatchSize_,
    uint256 collectionSize_,
    uint256 amountForAuctionAndDev_,
    uint256 amountForDevs_
  ) ERC721A("Azuki", "AZUKI", maxBatchSize_, collectionSize_) {
    maxPerAddressDuringMint = maxBatchSize_;
    amountForAuctionAndDev = amountForAuctionAndDev_;
    amountForDevs = amountForDevs_;
    require(
      amountForAuctionAndDev_ <= collectionSize_,
      "larger collection size needed"
    );
  }

  modifier callerIsUser() {
    require(tx.origin == msg.sender, "The caller is another contract");
    _;
  }

  function auctionMint(uint256 quantity) external payable callerIsUser {
    uint256 _saleStartTime = uint256(saleConfig.auctionSaleStartTime);
    require(
      _saleStartTime != 0 && block.timestamp >= _saleStartTime,
      "sale has not started yet"
    );
    require(
      totalSupply() + quantity <= amountForAuctionAndDev,
      "not enough remaining reserved for auction to support desired mint amount"
    );
    require(
      numberMinted(msg.sender) + quantity <= maxPerAddressDuringMint,
      "can not mint this many"
    );
    uint256 totalCost = getAuctionPrice(_saleStartTime) * quantity;
    _safeMint(msg.sender, quantity);
    refundIfOver(totalCost);
  }

  function allowlistMint() external payable callerIsUser {
    uint256 price = uint256(saleConfig.mintlistPrice);
    require(price != 0, "allowlist sale has not begun yet");
    require(allowlist[msg.sender] > 0, "not eligible for allowlist mint");
    require(totalSupply() + 1 <= collectionSize, "reached max supply");
    allowlist[msg.sender]--;
    _safeMint(msg.sender, 1);
    refundIfOver(price);
  }

  function publicSaleMint(uint256 quantity, uint256 callerPublicSaleKey)
    external
    payable
    callerIsUser
  {
    SaleConfig memory config = saleConfig;
    uint256 publicSaleKey = uint256(config.publicSaleKey);
    uint256 publicPrice = uint256(config.publicPrice);
    uint256 publicSaleStartTime = uint256(config.publicSaleStartTime);
    require(
      publicSaleKey == callerPublicSaleKey,
      "called with incorrect public sale key"
    );

    require(
      isPublicSaleOn(publicPrice, publicSaleKey, publicSaleStartTime),
      "public sale has not begun yet"
    );
    require(totalSupply() + quantity <= collectionSize, "reached max supply");
    require(
      numberMinted(msg.sender) + quantity <= maxPerAddressDuringMint,
      "can not mint this many"
    );
    _safeMint(msg.sender, quantity);
    refundIfOver(publicPrice * quantity);
  }

  function refundIfOver(uint256 price) private {
    require(msg.value >= price, "Need to send more ETH.");
    if (msg.value > price) {
      payable(msg.sender).transfer(msg.value - price);
    }
  }

  function isPublicSaleOn(
    uint256 publicPriceWei,
    uint256 publicSaleKey,
    uint256 publicSaleStartTime
  ) public view returns (bool) {
    return
      publicPriceWei != 0 &&
      publicSaleKey != 0 &&
      block.timestamp >= publicSaleStartTime;
  }

  uint256 public constant AUCTION_START_PRICE = 1 ether;
  uint256 public constant AUCTION_END_PRICE = 0.15 ether;
  uint256 public constant AUCTION_PRICE_CURVE_LENGTH = 340 minutes;
  uint256 public constant AUCTION_DROP_INTERVAL = 20 minutes;
  uint256 public constant AUCTION_DROP_PER_STEP =
    (AUCTION_START_PRICE - AUCTION_END_PRICE) /
      (AUCTION_PRICE_CURVE_LENGTH / AUCTION_DROP_INTERVAL);

  function getAuctionPrice(uint256 _saleStartTime)
    public
    view
    returns (uint256)
  {
    if (block.timestamp < _saleStartTime) {
      return AUCTION_START_PRICE;
    }
    if (block.timestamp - _saleStartTime >= AUCTION_PRICE_CURVE_LENGTH) {
      return AUCTION_END_PRICE;
    } else {
      uint256 steps = (block.timestamp - _saleStartTime) /
        AUCTION_DROP_INTERVAL;
      return AUCTION_START_PRICE - (steps * AUCTION_DROP_PER_STEP);
    }
  }

  function endAuctionAndSetupNonAuctionSaleInfo(
    uint64 mintlistPriceWei,
    uint64 publicPriceWei,
    uint32 publicSaleStartTime
  ) external onlyOwner {
    saleConfig = SaleConfig(
      0,
      publicSaleStartTime,
      mintlistPriceWei,
      publicPriceWei,
      saleConfig.publicSaleKey
    );
  }

  function setAuctionSaleStartTime(uint32 timestamp) external onlyOwner {
    saleConfig.auctionSaleStartTime = timestamp;
  }

  function setPublicSaleKey(uint32 key) external onlyOwner {
    saleConfig.publicSaleKey = key;
  }

  function seedAllowlist(address[] memory addresses, uint256[] memory numSlots)
    external
    onlyOwner
  {
    require(
      addresses.length == numSlots.length,
      "addresses does not match numSlots length"
    );
    for (uint256 i = 0; i < addresses.length; i++) {
      allowlist[addresses[i]] = numSlots[i];
    }
  }

  // For marketing etc.
  function devMint(uint256 quantity) external onlyOwner {
    require(
      totalSupply() + quantity <= amountForDevs,
      "too many already minted before dev mint"
    );
    require(
      quantity % maxBatchSize == 0,
      "can only mint a multiple of the maxBatchSize"
    );
    uint256 numChunks = quantity / maxBatchSize;
    for (uint256 i = 0; i < numChunks; i++) {
      _safeMint(msg.sender, maxBatchSize);
    }
  }

  // // metadata URI
  string private _baseTokenURI;

  function _baseURI() internal view virtual override returns (string memory) {
    return _baseTokenURI;
  }

  function setBaseURI(string calldata baseURI) external onlyOwner {
    _baseTokenURI = baseURI;
  }

  function withdrawMoney() external onlyOwner nonReentrant {
    (bool success, ) = msg.sender.call{value: address(this).balance}("");
    require(success, "Transfer failed.");
  }

  function setOwnersExplicit(uint256 quantity) external onlyOwner nonReentrant {
    _setOwnersExplicit(quantity);
  }

  function numberMinted(address owner) public view returns (uint256) {
    return _numberMinted(owner);
  }

  function getOwnershipData(uint256 tokenId)
    external
    view
    returns (TokenOwnership memory)
  {
    return ownershipOf(tokenId);
  }
}

File 2 of 13 : 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 3 of 13 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 4 of 13 : ERC721A.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
 *
 * Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.
 *
 * Does not support burning tokens to address(0).
 */
contract ERC721A is
  Context,
  ERC165,
  IERC721,
  IERC721Metadata,
  IERC721Enumerable
{
  using Address for address;
  using Strings for uint256;

  struct TokenOwnership {
    address addr;
    uint64 startTimestamp;
  }

  struct AddressData {
    uint128 balance;
    uint128 numberMinted;
  }

  uint256 private currentIndex = 0;

  uint256 internal immutable collectionSize;
  uint256 internal immutable maxBatchSize;

  // Token name
  string private _name;

  // Token symbol
  string private _symbol;

  // Mapping from token ID to ownership details
  // An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
  mapping(uint256 => TokenOwnership) private _ownerships;

  // Mapping owner address to address data
  mapping(address => AddressData) private _addressData;

  // 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
   * `maxBatchSize` refers to how much a minter can mint at a time.
   * `collectionSize_` refers to how many tokens are in the collection.
   */
  constructor(
    string memory name_,
    string memory symbol_,
    uint256 maxBatchSize_,
    uint256 collectionSize_
  ) {
    require(
      collectionSize_ > 0,
      "ERC721A: collection must have a nonzero supply"
    );
    require(maxBatchSize_ > 0, "ERC721A: max batch size must be nonzero");
    _name = name_;
    _symbol = symbol_;
    maxBatchSize = maxBatchSize_;
    collectionSize = collectionSize_;
  }

  /**
   * @dev See {IERC721Enumerable-totalSupply}.
   */
  function totalSupply() public view override returns (uint256) {
    return currentIndex;
  }

  /**
   * @dev See {IERC721Enumerable-tokenByIndex}.
   */
  function tokenByIndex(uint256 index) public view override returns (uint256) {
    require(index < totalSupply(), "ERC721A: global index out of bounds");
    return index;
  }

  /**
   * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
   * This read function is O(collectionSize). If calling from a separate contract, be sure to test gas first.
   * It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
   */
  function tokenOfOwnerByIndex(address owner, uint256 index)
    public
    view
    override
    returns (uint256)
  {
    require(index < balanceOf(owner), "ERC721A: owner index out of bounds");
    uint256 numMintedSoFar = totalSupply();
    uint256 tokenIdsIdx = 0;
    address currOwnershipAddr = address(0);
    for (uint256 i = 0; i < numMintedSoFar; i++) {
      TokenOwnership memory ownership = _ownerships[i];
      if (ownership.addr != address(0)) {
        currOwnershipAddr = ownership.addr;
      }
      if (currOwnershipAddr == owner) {
        if (tokenIdsIdx == index) {
          return i;
        }
        tokenIdsIdx++;
      }
    }
    revert("ERC721A: unable to get token of owner by index");
  }

  /**
   * @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 ||
      interfaceId == type(IERC721Enumerable).interfaceId ||
      super.supportsInterface(interfaceId);
  }

  /**
   * @dev See {IERC721-balanceOf}.
   */
  function balanceOf(address owner) public view override returns (uint256) {
    require(owner != address(0), "ERC721A: balance query for the zero address");
    return uint256(_addressData[owner].balance);
  }

  function _numberMinted(address owner) internal view returns (uint256) {
    require(
      owner != address(0),
      "ERC721A: number minted query for the zero address"
    );
    return uint256(_addressData[owner].numberMinted);
  }

  function ownershipOf(uint256 tokenId)
    internal
    view
    returns (TokenOwnership memory)
  {
    require(_exists(tokenId), "ERC721A: owner query for nonexistent token");

    uint256 lowestTokenToCheck;
    if (tokenId >= maxBatchSize) {
      lowestTokenToCheck = tokenId - maxBatchSize + 1;
    }

    for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
      TokenOwnership memory ownership = _ownerships[curr];
      if (ownership.addr != address(0)) {
        return ownership;
      }
    }

    revert("ERC721A: unable to determine the owner of token");
  }

  /**
   * @dev See {IERC721-ownerOf}.
   */
  function ownerOf(uint256 tokenId) public view override returns (address) {
    return ownershipOf(tokenId).addr;
  }

  /**
   * @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 override {
    address owner = ERC721A.ownerOf(tokenId);
    require(to != owner, "ERC721A: approval to current owner");

    require(
      _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
      "ERC721A: approve caller is not owner nor approved for all"
    );

    _approve(to, tokenId, owner);
  }

  /**
   * @dev See {IERC721-getApproved}.
   */
  function getApproved(uint256 tokenId) public view override returns (address) {
    require(_exists(tokenId), "ERC721A: approved query for nonexistent token");

    return _tokenApprovals[tokenId];
  }

  /**
   * @dev See {IERC721-setApprovalForAll}.
   */
  function setApprovalForAll(address operator, bool approved) public override {
    require(operator != _msgSender(), "ERC721A: 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 override {
    _transfer(from, to, tokenId);
  }

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

  /**
   * @dev See {IERC721-safeTransferFrom}.
   */
  function safeTransferFrom(
    address from,
    address to,
    uint256 tokenId,
    bytes memory _data
  ) public override {
    _transfer(from, to, tokenId);
    require(
      _checkOnERC721Received(from, to, tokenId, _data),
      "ERC721A: 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`),
   */
  function _exists(uint256 tokenId) internal view returns (bool) {
    return tokenId < currentIndex;
  }

  function _safeMint(address to, uint256 quantity) internal {
    _safeMint(to, quantity, "");
  }

  /**
   * @dev Mints `quantity` tokens and transfers them to `to`.
   *
   * Requirements:
   *
   * - there must be `quantity` tokens remaining unminted in the total collection.
   * - `to` cannot be the zero address.
   * - `quantity` cannot be larger than the max batch size.
   *
   * Emits a {Transfer} event.
   */
  function _safeMint(
    address to,
    uint256 quantity,
    bytes memory _data
  ) internal {
    uint256 startTokenId = currentIndex;
    require(to != address(0), "ERC721A: mint to the zero address");
    // We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.
    require(!_exists(startTokenId), "ERC721A: token already minted");
    require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high");

    _beforeTokenTransfers(address(0), to, startTokenId, quantity);

    AddressData memory addressData = _addressData[to];
    _addressData[to] = AddressData(
      addressData.balance + uint128(quantity),
      addressData.numberMinted + uint128(quantity)
    );
    _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));

    uint256 updatedIndex = startTokenId;

    for (uint256 i = 0; i < quantity; i++) {
      emit Transfer(address(0), to, updatedIndex);
      require(
        _checkOnERC721Received(address(0), to, updatedIndex, _data),
        "ERC721A: transfer to non ERC721Receiver implementer"
      );
      updatedIndex++;
    }

    currentIndex = updatedIndex;
    _afterTokenTransfers(address(0), to, startTokenId, quantity);
  }

  /**
   * @dev Transfers `tokenId` from `from` to `to`.
   *
   * 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
  ) private {
    TokenOwnership memory prevOwnership = ownershipOf(tokenId);

    bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
      getApproved(tokenId) == _msgSender() ||
      isApprovedForAll(prevOwnership.addr, _msgSender()));

    require(
      isApprovedOrOwner,
      "ERC721A: transfer caller is not owner nor approved"
    );

    require(
      prevOwnership.addr == from,
      "ERC721A: transfer from incorrect owner"
    );
    require(to != address(0), "ERC721A: transfer to the zero address");

    _beforeTokenTransfers(from, to, tokenId, 1);

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

    _addressData[from].balance -= 1;
    _addressData[to].balance += 1;
    _ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));

    // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
    // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
    uint256 nextTokenId = tokenId + 1;
    if (_ownerships[nextTokenId].addr == address(0)) {
      if (_exists(nextTokenId)) {
        _ownerships[nextTokenId] = TokenOwnership(
          prevOwnership.addr,
          prevOwnership.startTimestamp
        );
      }
    }

    emit Transfer(from, to, tokenId);
    _afterTokenTransfers(from, to, tokenId, 1);
  }

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

  uint256 public nextOwnerToExplicitlySet = 0;

  /**
   * @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().
   */
  function _setOwnersExplicit(uint256 quantity) internal {
    uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
    require(quantity > 0, "quantity must be nonzero");
    uint256 endIndex = oldNextOwnerToSet + quantity - 1;
    if (endIndex > collectionSize - 1) {
      endIndex = collectionSize - 1;
    }
    // We know if the last one in the group exists, all in the group exist, due to serial ordering.
    require(_exists(endIndex), "not enough minted yet for this cleanup");
    for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
      if (_ownerships[i].addr == address(0)) {
        TokenOwnership memory ownership = ownershipOf(i);
        _ownerships[i] = TokenOwnership(
          ownership.addr,
          ownership.startTimestamp
        );
      }
    }
    nextOwnerToExplicitlySet = endIndex + 1;
  }

  /**
   * @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(to).onERC721Received.selector;
      } catch (bytes memory reason) {
        if (reason.length == 0) {
          revert("ERC721A: transfer to non ERC721Receiver implementer");
        } else {
          assembly {
            revert(add(32, reason), mload(reason))
          }
        }
      }
    } else {
      return true;
    }
  }

  /**
   * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
   *
   * startTokenId - the first token id to be transferred
   * quantity - the amount to be transferred
   *
   * 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`.
   */
  function _beforeTokenTransfers(
    address from,
    address to,
    uint256 startTokenId,
    uint256 quantity
  ) internal virtual {}

  /**
   * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
   * minting.
   *
   * startTokenId - the first token id to be transferred
   * quantity - the amount to be transferred
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero.
   * - `from` and `to` are never both zero.
   */
  function _afterTokenTransfers(
    address from,
    address to,
    uint256 startTokenId,
    uint256 quantity
  ) internal virtual {}
}

File 5 of 13 : 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 6 of 13 : 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 13 : 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 8 of 13 : 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 9 of 13 : 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 10 of 13 : IERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

File 11 of 13 : 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);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private 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 12 of 13 : 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 13 of 13 : 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);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 500
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"uint256","name":"maxBatchSize_","type":"uint256"},{"internalType":"uint256","name":"collectionSize_","type":"uint256"},{"internalType":"uint256","name":"amountForAuctionAndDev_","type":"uint256"},{"internalType":"uint256","name":"amountForDevs_","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":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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"},{"inputs":[],"name":"AUCTION_DROP_INTERVAL","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"AUCTION_DROP_PER_STEP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"AUCTION_END_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"AUCTION_PRICE_CURVE_LENGTH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"AUCTION_START_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"allowlist","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"allowlistMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"amountForAuctionAndDev","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"amountForDevs","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"auctionMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"devMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"mintlistPriceWei","type":"uint64"},{"internalType":"uint64","name":"publicPriceWei","type":"uint64"},{"internalType":"uint32","name":"publicSaleStartTime","type":"uint32"}],"name":"endAuctionAndSetupNonAuctionSaleInfo","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":"_saleStartTime","type":"uint256"}],"name":"getAuctionPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getOwnershipData","outputs":[{"components":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint64","name":"startTimestamp","type":"uint64"}],"internalType":"struct ERC721A.TokenOwnership","name":"","type":"tuple"}],"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":"publicPriceWei","type":"uint256"},{"internalType":"uint256","name":"publicSaleKey","type":"uint256"},{"internalType":"uint256","name":"publicSaleStartTime","type":"uint256"}],"name":"isPublicSaleOn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPerAddressDuringMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextOwnerToExplicitlySet","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"numberMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"quantity","type":"uint256"},{"internalType":"uint256","name":"callerPublicSaleKey","type":"uint256"}],"name":"publicSaleMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleConfig","outputs":[{"internalType":"uint32","name":"auctionSaleStartTime","type":"uint32"},{"internalType":"uint32","name":"publicSaleStartTime","type":"uint32"},{"internalType":"uint64","name":"mintlistPrice","type":"uint64"},{"internalType":"uint64","name":"publicPrice","type":"uint64"},{"internalType":"uint32","name":"publicSaleKey","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addresses","type":"address[]"},{"internalType":"uint256[]","name":"numSlots","type":"uint256[]"}],"name":"seedAllowlist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"timestamp","type":"uint32"}],"name":"setAuctionSaleStartTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"setOwnersExplicit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"key","type":"uint32"}],"name":"setPublicSaleKey","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawMoney","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000271000000000000000000000000000000000000000000000000000000000000022c400000000000000000000000000000000000000000000000000000000000000c8

-----Decoded View---------------
Arg [0] : maxBatchSize_ (uint256): 5
Arg [1] : collectionSize_ (uint256): 10000
Arg [2] : amountForAuctionAndDev_ (uint256): 8900
Arg [3] : amountForDevs_ (uint256): 200

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [1] : 0000000000000000000000000000000000000000000000000000000000002710
Arg [2] : 00000000000000000000000000000000000000000000000000000000000022c4
Arg [3] : 00000000000000000000000000000000000000000000000000000000000000c8


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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