ETH Price: $3,122.92 (-5.12%)

Contract

0xC252D6Dd77892D746ecEa52f2eC243bbC07992AD
 

Overview

ETH Balance

0.2688 ETH

Eth Value

$839.44 (@ $3,122.92/ETH)

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Release202228102024-07-03 1:49:47134 days ago1719971387IN
0xC252D6Dd...bC07992AD
0 ETH0.000178083.88594545
Release185303232023-11-08 22:48:47371 days ago1699483727IN
0xC252D6Dd...bC07992AD
0 ETH0.0018368429.18964127
Set Approval For...181647162023-09-18 18:49:59422 days ago1695062999IN
0xC252D6Dd...bC07992AD
0 ETH0.000700428.79717636
Release166795972023-02-21 21:38:23631 days ago1677015503IN
0xC252D6Dd...bC07992AD
0 ETH0.0021972647.9584559
Release166510982023-02-17 21:30:47635 days ago1676669447IN
0xC252D6Dd...bC07992AD
0 ETH0.0036693958.31097281
Release162067862022-12-17 20:24:35697 days ago1671308675IN
0xC252D6Dd...bC07992AD
0 ETH0.0007537813.7911017
Release159853032022-11-16 21:36:23728 days ago1668634583IN
0xC252D6Dd...bC07992AD
0 ETH0.0015766725.05516655
Release159265972022-11-08 16:45:47736 days ago1667925947IN
0xC252D6Dd...bC07992AD
0 ETH0.0025542455.75014391
Set Approval For...158475912022-10-28 15:54:59748 days ago1666972499IN
0xC252D6Dd...bC07992AD
0 ETH0.0020175243.63724236
Set Approval For...158467902022-10-28 13:14:47748 days ago1666962887IN
0xC252D6Dd...bC07992AD
0 ETH0.0007187915.5469537
Set Approval For...157144612022-10-10 1:37:11766 days ago1665365831IN
0xC252D6Dd...bC07992AD
0 ETH0.0009906921.42793051
Claim Free157143912022-10-10 1:22:59766 days ago1665364979IN
0xC252D6Dd...bC07992AD
0 ETH0.0027727129.31672117
Claim Free157118462022-10-09 16:51:35766 days ago1665334295IN
0xC252D6Dd...bC07992AD
0 ETH0.0017148620.54713731
Mint156358942022-09-29 2:03:23777 days ago1664417003IN
0xC252D6Dd...bC07992AD
0.14 ETH0.0006546510.15722565
Set Approval For...156351892022-09-28 23:42:11777 days ago1664408531IN
0xC252D6Dd...bC07992AD
0 ETH0.000339237.33724893
Mint156289002022-09-28 2:37:35778 days ago1664332655IN
0xC252D6Dd...bC07992AD
0.14 ETH0.0017029826.42250886
Safe Transfer Fr...156288802022-09-28 2:33:35778 days ago1664332415IN
0xC252D6Dd...bC07992AD
0 ETH0.0014679122.68627102
Release156257492022-09-27 16:01:23779 days ago1664294483IN
0xC252D6Dd...bC07992AD
0 ETH0.001809839.50157935
Claim Free156213972022-09-27 1:25:11779 days ago1664241911IN
0xC252D6Dd...bC07992AD
0 ETH0.0011955612.38
Mint155968512022-09-23 15:10:11783 days ago1663945811IN
0xC252D6Dd...bC07992AD
0.07 ETH0.0011458214.4023597
Set Approval For...155944962022-09-23 7:16:35783 days ago1663917395IN
0xC252D6Dd...bC07992AD
0 ETH0.000281876.09662158
Mint155942622022-09-23 6:29:47783 days ago1663914587IN
0xC252D6Dd...bC07992AD
0.07 ETH0.000512716.44453613
Claim Free155911802022-09-22 20:10:23783 days ago1663877423IN
0xC252D6Dd...bC07992AD
0 ETH0.0010925611.55199134
Set Approval For...155897472022-09-22 15:22:59784 days ago1663860179IN
0xC252D6Dd...bC07992AD
0 ETH0.0014789931.9893937
Claim Free155881022022-09-22 9:51:23784 days ago1663840283IN
0xC252D6Dd...bC07992AD
0 ETH0.00048885.94089464
View all transactions

Latest 17 internal transactions

Advanced mode:
Parent Transaction Hash Block From To
202228102024-07-03 1:49:47134 days ago1719971387
0xC252D6Dd...bC07992AD
0.4403 ETH
185303232023-11-08 22:48:47371 days ago1699483727
0xC252D6Dd...bC07992AD
0.1792 ETH
166795972023-02-21 21:38:23631 days ago1677015503
0xC252D6Dd...bC07992AD
0.2737 ETH
166510982023-02-17 21:30:47635 days ago1676669447
0xC252D6Dd...bC07992AD
0.448 ETH
162067862022-12-17 20:24:35697 days ago1671308675
0xC252D6Dd...bC07992AD
0.084 ETH
159853032022-11-16 21:36:23728 days ago1668634583
0xC252D6Dd...bC07992AD
0.896 ETH
159265972022-11-08 16:45:47736 days ago1667925947
0xC252D6Dd...bC07992AD
0.028 ETH
156257492022-09-27 16:01:23779 days ago1664294483
0xC252D6Dd...bC07992AD
0.014 ETH
155488252022-09-16 21:23:59789 days ago1663363439
0xC252D6Dd...bC07992AD
0.042 ETH
155225832022-09-12 19:12:28793 days ago1663009948
0xC252D6Dd...bC07992AD
0.812 ETH
155211772022-09-12 13:47:36794 days ago1662990456
0xC252D6Dd...bC07992AD
0.812 ETH
155118012022-09-11 0:28:46795 days ago1662856126
0xC252D6Dd...bC07992AD
2.8231 ETH
155117892022-09-11 0:25:12795 days ago1662855912
0xC252D6Dd...bC07992AD
0.6923 ETH
155107102022-09-10 19:59:39795 days ago1662839979
0xC252D6Dd...bC07992AD
0.7406 ETH
155100032022-09-10 17:18:55795 days ago1662830335
0xC252D6Dd...bC07992AD
0.3542 ETH
155093722022-09-10 14:50:12796 days ago1662821412
0xC252D6Dd...bC07992AD
0.0518 ETH
155091522022-09-10 13:56:32796 days ago1662818192  Contract Creation0 ETH
Loading...
Loading

Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x34eE70C5...143308090
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ERC721AContract

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 20 runs

Other Settings:
default evmVersion
File 1 of 11 : ERC721AContract.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "@openzeppelin/contracts/finance/PaymentSplitter.sol";
import "erc721a/contracts/ERC721A.sol";

abstract contract MintPass {
    function balanceOf(address owner, uint256 id)
        public
        view
        virtual
        returns (uint256 balance);
    function burnForAddress(
        uint256 _id, 
        uint256 _quantity,
        address _address
    ) public virtual;
}

contract ERC721AContract is ERC721A, Ownable, PaymentSplitter {

    using Strings for uint256;

    struct Token {
        uint16 maxSupply;
        uint16 maxPerWallet;
        uint16 maxPerTransaction;
        uint72 preSalePrice;
        uint72 pubSalePrice;
        bool preSaleIsActive;
        bool saleIsActive;
        bool claimIsActive;
        bool supplyLock;
        uint8 salePhase;
        uint8 claimPhase;
    }

    mapping(address => bool) public fiatAllowlist;
    mapping(address => uint16) public hasMinted;
    mapping(address => uint16) public hasClaimed;
    bytes32 public saleMerkleRoot;
    bytes32 public claimMerkleRoot;
    Token public token;
    string private baseURI;
    uint256 public mintpassId;
    address public mintpassAddress;
    MintPass mintpass;
    string public provenance;

    modifier onlyFiatMinter() {
        require(fiatAllowlist[msg.sender], "Not authorized");
        _;
    }

    constructor(
        string memory _name,
        string memory _symbol,
        string memory _uri,
        address[] memory _payees,
        uint256[] memory _shares,
        address _owner,
        Token memory _token
    ) ERC721A(_name, _symbol)
      PaymentSplitter(_payees, _shares) {
        baseURI = _uri;
        token = _token;
        transferOwnership(_owner);
    }

    function setProvenance(string memory hash) public onlyOwner {
        provenance = hash;
    }

    function _startTokenId() override internal pure returns (uint256) {
        return 1;
    }

    function tokenURI(uint256 _tokenId) override public view returns (string memory) {
        return string(abi.encodePacked(baseURI, _tokenId.toString()));
    }

    function getClaimIneligibilityReason(address _address, uint256 _quantity) public view returns (string memory) {
        if (totalSupply() + _quantity > uint256(token.maxSupply)) return "NOT_ENOUGH_SUPPLY";
        if (token.preSaleIsActive || !token.saleIsActive) return "NOT_LIVE";
        if (!token.preSaleIsActive && token.saleIsActive) return "";
    }

    function unclaimedSupply() public view returns (uint256) {
        return uint256(token.maxSupply - uint16(totalSupply()));
    }

    function price() public view returns (uint256) {
        return token.preSaleIsActive ? token.preSalePrice : token.pubSalePrice;
    }

    function addFiatMinter(address _address) public onlyOwner {
        fiatAllowlist[_address] = true;
    }

    function removeFiatMinter(address _address) public onlyOwner {
        delete fiatAllowlist[_address];
    }

    function setMintPass(uint256 _id, address _address) external onlyOwner {
        mintpassId = _id;
        mintpassAddress = _address;
        mintpass = MintPass(_address);
    }

    function setSaleRoot(bytes32 _root) public onlyOwner {
        saleMerkleRoot = _root;
    }

    function setClaimRoot(bytes32 _root) public onlyOwner {
        claimMerkleRoot = _root;
    }

    function lockSupply() public onlyOwner {
        token.supplyLock = true;
    }

    function updateConfig(
        uint16 _maxSupply,
        uint16 _maxPerWallet,
        uint16 _maxPerTransaction,
        uint72 _preSalePrice,
        uint72 _pubSalePrice
    ) public onlyOwner {
        require(_maxSupply >= totalSupply(), "Invalid supply");
        if (token.supplyLock) {
            require(_maxSupply == token.maxSupply, "Supply is locked");
        }
        token.maxSupply = _maxSupply;
        token.maxPerWallet = _maxPerWallet;
        token.maxPerTransaction = _maxPerTransaction;
        token.preSalePrice = _preSalePrice;
        token.pubSalePrice = _pubSalePrice;
    }

    function setBaseTokenURI(string memory _uri) public onlyOwner {
        baseURI = _uri;
    }

    function updateSaleState(
        bool _preSaleIsActive,
        bool _saleIsActive,
        uint8 _salePhase
    ) public onlyOwner {
        // public = 0, mintpass = 1, whitelist = 2
        require(_salePhase == 0 || _salePhase == 1 || _salePhase == 2, "Invalid phase.");
        if (_preSaleIsActive && _salePhase == 1) require(mintpassAddress != address(0), "MintPass undefined.");
        if (_preSaleIsActive && _salePhase == 2) require(saleMerkleRoot != "", "Root undefined");
        token.preSaleIsActive = _preSaleIsActive;
        token.saleIsActive = _saleIsActive;
        token.salePhase = _salePhase;
    }

    function updateClaimState(
        bool _claimIsActive,
        uint8 _claimPhase
    ) public onlyOwner {
        // mintpass = 1, whitelist = 2
        require(_claimPhase == 1 || _claimPhase == 2, "Invalid phase.");
        if (_claimIsActive && _claimPhase == 1) require(mintpassAddress != address(0), "MintPass undefined.");
        if (_claimIsActive && _claimPhase == 2) require(claimMerkleRoot != "", "Root undefined");
        token.claimIsActive = _claimIsActive;
        token.claimPhase = _claimPhase;
    }

    function mint(uint16 _quantity, bytes32[] memory _proof) public payable {
        require(price() * _quantity <= msg.value, "ETH incorrect");
        uint16 _maxSupply = token.maxSupply;
        uint16 _maxPerWallet = token.maxPerWallet;
        uint16 _maxPerTransaction = token.maxPerTransaction;
        bool _saleIsActive = token.saleIsActive;
        bool _preSaleIsActive = token.preSaleIsActive;
        require(uint16(totalSupply()) + _quantity <= _maxSupply, "Insufficient supply");
        require(_saleIsActive, "Sale inactive");
        if(_preSaleIsActive) {
            if (token.salePhase == 1) {
                require(mintpass.balanceOf(msg.sender, mintpassId) >= _quantity, "Invalid quantity");
                mintpass.burnForAddress(mintpassId, _quantity, msg.sender);
            }
            if (token.salePhase == 2) {
                uint16 mintedAmount = hasMinted[msg.sender] + _quantity;
                require(mintedAmount <= _maxPerWallet, "Invalid quantity");
                bytes32 leaf = keccak256(abi.encodePacked(msg.sender));
                require(MerkleProof.verify(_proof, saleMerkleRoot, leaf), "Not whitelisted");
                hasMinted[msg.sender] = mintedAmount;
            }
        } else {
            require(_quantity <= _maxPerTransaction, "Invalid quantity");
        }
        _safeMint(msg.sender, _quantity);
    }

    function claimTo(address _address, uint256 _quantity) public payable onlyFiatMinter {
        require(token.saleIsActive, "Sale is not active.");
        require(totalSupply() + _quantity <= uint256(token.maxSupply), "Insufficient supply");
        require(price() * _quantity <= msg.value, "ETH incorrect");
        _safeMint(_address, _quantity);
    }

    function claimFree(uint16 _maxMint, uint16 _quantity, bytes32[] memory _proof) public {
        require(token.claimPhase == 1 || token.claimPhase == 2, "Invalid phase.");
        require(token.claimIsActive, "Claim inactive");
        uint16 _currentSupply = uint16(totalSupply());
        require(_currentSupply + _quantity <= token.maxSupply, "Insufficient supply");
        if (token.claimPhase == 1) {
            require(mintpass.balanceOf(msg.sender, mintpassId) >= _quantity, "Invalid quantity");
            mintpass.burnForAddress(mintpassId, _quantity, msg.sender);
        }
        if (token.claimPhase == 2) {
            uint16 _hasClaimed = hasClaimed[msg.sender];
            bytes32 leaf = keccak256(abi.encode(msg.sender, _maxMint));
            require(MerkleProof.verify(_proof, claimMerkleRoot, leaf), "Not whitelisted");
            uint16 _claimable = _maxMint - _hasClaimed;
            require(_quantity <= _claimable, "Invalid quantity");
            hasClaimed[msg.sender] = _hasClaimed + _quantity;
        }
        _safeMint(msg.sender, _quantity);
    }

    function reserve(address _address, uint16 _quantity) public onlyOwner {
        require(totalSupply() + _quantity <= token.maxSupply, "Insufficient supply");
        _safeMint(_address, _quantity);
    }
}

File 2 of 11 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

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() {
        _transferOwnership(_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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 11 : PaymentSplitter.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (finance/PaymentSplitter.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/utils/SafeERC20.sol";
import "../utils/Address.sol";
import "../utils/Context.sol";

/**
 * @title PaymentSplitter
 * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
 * that the Ether will be split in this way, since it is handled transparently by the contract.
 *
 * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
 * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
 * an amount proportional to the percentage of total shares they were assigned.
 *
 * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
 * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
 * function.
 *
 * NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and
 * tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you
 * to run tests before sending real value to this contract.
 */
contract PaymentSplitter is Context {
    event PayeeAdded(address account, uint256 shares);
    event PaymentReleased(address to, uint256 amount);
    event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount);
    event PaymentReceived(address from, uint256 amount);

    uint256 private _totalShares;
    uint256 private _totalReleased;

    mapping(address => uint256) private _shares;
    mapping(address => uint256) private _released;
    address[] private _payees;

    mapping(IERC20 => uint256) private _erc20TotalReleased;
    mapping(IERC20 => mapping(address => uint256)) private _erc20Released;

    /**
     * @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at
     * the matching position in the `shares` array.
     *
     * All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no
     * duplicates in `payees`.
     */
    constructor(address[] memory payees, uint256[] memory shares_) payable {
        require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch");
        require(payees.length > 0, "PaymentSplitter: no payees");

        for (uint256 i = 0; i < payees.length; i++) {
            _addPayee(payees[i], shares_[i]);
        }
    }

    /**
     * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
     * reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
     * reliability of the events, and not the actual splitting of Ether.
     *
     * To learn more about this see the Solidity documentation for
     * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
     * functions].
     */
    receive() external payable virtual {
        emit PaymentReceived(_msgSender(), msg.value);
    }

    /**
     * @dev Getter for the total shares held by payees.
     */
    function totalShares() public view returns (uint256) {
        return _totalShares;
    }

    /**
     * @dev Getter for the total amount of Ether already released.
     */
    function totalReleased() public view returns (uint256) {
        return _totalReleased;
    }

    /**
     * @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20
     * contract.
     */
    function totalReleased(IERC20 token) public view returns (uint256) {
        return _erc20TotalReleased[token];
    }

    /**
     * @dev Getter for the amount of shares held by an account.
     */
    function shares(address account) public view returns (uint256) {
        return _shares[account];
    }

    /**
     * @dev Getter for the amount of Ether already released to a payee.
     */
    function released(address account) public view returns (uint256) {
        return _released[account];
    }

    /**
     * @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an
     * IERC20 contract.
     */
    function released(IERC20 token, address account) public view returns (uint256) {
        return _erc20Released[token][account];
    }

    /**
     * @dev Getter for the address of the payee number `index`.
     */
    function payee(uint256 index) public view returns (address) {
        return _payees[index];
    }

    /**
     * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
     * total shares and their previous withdrawals.
     */
    function release(address payable account) public virtual {
        require(_shares[account] > 0, "PaymentSplitter: account has no shares");

        uint256 totalReceived = address(this).balance + totalReleased();
        uint256 payment = _pendingPayment(account, totalReceived, released(account));

        require(payment != 0, "PaymentSplitter: account is not due payment");

        _released[account] += payment;
        _totalReleased += payment;

        Address.sendValue(account, payment);
        emit PaymentReleased(account, payment);
    }

    /**
     * @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their
     * percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20
     * contract.
     */
    function release(IERC20 token, address account) public virtual {
        require(_shares[account] > 0, "PaymentSplitter: account has no shares");

        uint256 totalReceived = token.balanceOf(address(this)) + totalReleased(token);
        uint256 payment = _pendingPayment(account, totalReceived, released(token, account));

        require(payment != 0, "PaymentSplitter: account is not due payment");

        _erc20Released[token][account] += payment;
        _erc20TotalReleased[token] += payment;

        SafeERC20.safeTransfer(token, account, payment);
        emit ERC20PaymentReleased(token, account, payment);
    }

    /**
     * @dev internal logic for computing the pending payment of an `account` given the token historical balances and
     * already released amounts.
     */
    function _pendingPayment(
        address account,
        uint256 totalReceived,
        uint256 alreadyReleased
    ) private view returns (uint256) {
        return (totalReceived * _shares[account]) / _totalShares - alreadyReleased;
    }

    /**
     * @dev Add a new payee to the contract.
     * @param account The address of the payee to add.
     * @param shares_ The number of shares owned by the payee.
     */
    function _addPayee(address account, uint256 shares_) private {
        require(account != address(0), "PaymentSplitter: account is the zero address");
        require(shares_ > 0, "PaymentSplitter: shares are 0");
        require(_shares[account] == 0, "PaymentSplitter: account already has shares");

        _payees.push(account);
        _shares[account] = shares_;
        _totalShares = _totalShares + shares_;
        emit PayeeAdded(account, shares_);
    }
}

File 4 of 11 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

File 5 of 11 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 6 of 11 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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 7 of 11 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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 8 of 11 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

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 9 of 11 : MerkleProof.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = _efficientHash(computedHash, proofElement);
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = _efficientHash(proofElement, computedHash);
            }
        }
        return computedHash;
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

File 10 of 11 : ERC721A.sol
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.0.0
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721A.sol';

/**
 * @dev ERC721 token receiver interface.
 */
interface ERC721A__IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
 *
 * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 *
 * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
    // Mask of an entry in packed address data.
    uint256 private constant BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

    // The bit position of `numberMinted` in packed address data.
    uint256 private constant BITPOS_NUMBER_MINTED = 64;

    // The bit position of `numberBurned` in packed address data.
    uint256 private constant BITPOS_NUMBER_BURNED = 128;

    // The bit position of `aux` in packed address data.
    uint256 private constant BITPOS_AUX = 192;

    // Mask of all 256 bits in packed address data except the 64 bits for `aux`.
    uint256 private constant BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;

    // The bit position of `startTimestamp` in packed ownership.
    uint256 private constant BITPOS_START_TIMESTAMP = 160;

    // The bit mask of the `burned` bit in packed ownership.
    uint256 private constant BITMASK_BURNED = 1 << 224;
    
    // The bit position of the `nextInitialized` bit in packed ownership.
    uint256 private constant BITPOS_NEXT_INITIALIZED = 225;

    // The bit mask of the `nextInitialized` bit in packed ownership.
    uint256 private constant BITMASK_NEXT_INITIALIZED = 1 << 225;

    // The tokenId of the next token to be minted.
    uint256 private _currentIndex;

    // The number of tokens burned.
    uint256 private _burnCounter;

    // 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 `_packedOwnershipOf` implementation for details.
    //
    // Bits Layout:
    // - [0..159]   `addr`
    // - [160..223] `startTimestamp`
    // - [224]      `burned`
    // - [225]      `nextInitialized`
    mapping(uint256 => uint256) private _packedOwnerships;

    // Mapping owner address to address data.
    //
    // Bits Layout:
    // - [0..63]    `balance`
    // - [64..127]  `numberMinted`
    // - [128..191] `numberBurned`
    // - [192..255] `aux`
    mapping(address => uint256) private _packedAddressData;

    // 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;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    /**
     * @dev Returns the starting token ID. 
     * To change the starting token ID, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev Returns the next token ID to be minted.
     */
    function _nextTokenId() internal view returns (uint256) {
        return _currentIndex;
    }

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count. 
     * To get the total number of tokens minted, please see `_totalMinted`.
     */
    function totalSupply() public view override returns (uint256) {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than `_currentIndex - _startTokenId()` times.
        unchecked {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

    /**
     * @dev Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view returns (uint256) {
        // Counter underflow is impossible as _currentIndex does not decrement,
        // and it is initialized to `_startTokenId()`
        unchecked {
            return _currentIndex - _startTokenId();
        }
    }

    /**
     * @dev Returns the total number of tokens burned.
     */
    function _totalBurned() internal view returns (uint256) {
        return _burnCounter;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        // The interface IDs are constants representing the first 4 bytes of the XOR of
        // all function selectors in the interface. See: https://eips.ethereum.org/EIPS/eip-165
        // e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`
        return
            interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
            interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
            interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> BITPOS_NUMBER_MINTED) & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> BITPOS_NUMBER_BURNED) & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) {
        return uint64(_packedAddressData[owner] >> BITPOS_AUX);
    }

    /**
     * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
     * If there are multiple variables, please pack them into a uint64.
     */
    function _setAux(address owner, uint64 aux) internal {
        uint256 packed = _packedAddressData[owner];
        uint256 auxCasted;
        assembly { // Cast aux without masking.
            auxCasted := aux
        }
        packed = (packed & BITMASK_AUX_COMPLEMENT) | (auxCasted << BITPOS_AUX);
        _packedAddressData[owner] = packed;
    }

    /**
     * Returns the packed ownership data of `tokenId`.
     */
    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
        uint256 curr = tokenId;

        unchecked {
            if (_startTokenId() <= curr)
                if (curr < _currentIndex) {
                    uint256 packed = _packedOwnerships[curr];
                    // If not burned.
                    if (packed & BITMASK_BURNED == 0) {
                        // Invariant:
                        // There will always be an ownership that has an address and is not burned
                        // before an ownership that does not have an address and is not burned.
                        // Hence, curr will not underflow.
                        //
                        // We can directly compare the packed value.
                        // If the address is zero, packed is zero.
                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * Returns the unpacked `TokenOwnership` struct from `packed`.
     */
    function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
        ownership.addr = address(uint160(packed));
        ownership.startTimestamp = uint64(packed >> BITPOS_START_TIMESTAMP);
        ownership.burned = packed & BITMASK_BURNED != 0;
    }

    /**
     * Returns the unpacked `TokenOwnership` struct at `index`.
     */
    function _ownershipAt(uint256 index) internal view returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnerships[index]);
    }

    /**
     * @dev Initializes the ownership slot minted at `index` for efficiency purposes.
     */
    function _initializeOwnershipAt(uint256 index) internal {
        if (_packedOwnerships[index] == 0) {
            _packedOwnerships[index] = _packedOwnershipOf(index);
        }
    }

    /**
     * Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around in the collection over time.
     */
    function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnershipOf(tokenId));
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

    /**
     * @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) {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

        string memory baseURI = _baseURI();
        return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : '';
    }

    /**
     * @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 Casts the address to uint256 without masking.
     */
    function _addressToUint256(address value) private pure returns (uint256 result) {
        assembly {
            result := value
        }
    }

    /**
     * @dev Casts the boolean to uint256 without branching.
     */
    function _boolToUint256(bool value) private pure returns (uint256 result) {
        assembly {
            result := value
        }
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = address(uint160(_packedOwnershipOf(tokenId)));
        if (to == owner) revert ApprovalToCurrentOwner();

        if (_msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                revert ApprovalCallerNotOwnerNorApproved();
            }

        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        if (operator == _msgSenderERC721A()) revert ApproveToCaller();

        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), 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 {
        _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 {
        _transfer(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

    /**
     * @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
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex && // If within bounds,
            _packedOwnerships[tokenId] & BITMASK_BURNED == 0; // and not burned.
    }

    /**
     * @dev Equivalent to `_safeMint(to, quantity, '')`.
     */
    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, quantity, '');
    }

    /**
     * @dev Safely mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement
     *   {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();

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

        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the balance and number minted.
            _packedAddressData[to] += quantity * ((1 << BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] =
                _addressToUint256(to) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                (_boolToUint256(quantity == 1) << BITPOS_NEXT_INITIALIZED);

            uint256 updatedIndex = startTokenId;
            uint256 end = updatedIndex + quantity;

            if (to.code.length != 0) {
                do {
                    emit Transfer(address(0), to, updatedIndex);
                    if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
                        revert TransferToNonERC721ReceiverImplementer();
                    }
                } while (updatedIndex < end);
                // Reentrancy protection
                if (_currentIndex != startTokenId) revert();
            } else {
                do {
                    emit Transfer(address(0), to, updatedIndex++);
                } while (updatedIndex < end);
            }
            _currentIndex = updatedIndex;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 quantity) internal {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();

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

        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the balance and number minted.
            _packedAddressData[to] += quantity * ((1 << BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] =
                _addressToUint256(to) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                (_boolToUint256(quantity == 1) << BITPOS_NEXT_INITIALIZED);

            uint256 updatedIndex = startTokenId;
            uint256 end = updatedIndex + quantity;

            do {
                emit Transfer(address(0), to, updatedIndex++);
            } while (updatedIndex < end);

            _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 {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();

        bool isApprovedOrOwner = (_msgSenderERC721A() == from ||
            isApprovedForAll(from, _msgSenderERC721A()) ||
            getApproved(tokenId) == _msgSenderERC721A());

        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner.
        delete _tokenApprovals[tokenId];

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
        unchecked {
            // We can directly increment and decrement the balances.
            --_packedAddressData[from]; // Updates: `balance -= 1`.
            ++_packedAddressData[to]; // Updates: `balance += 1`.

            // Updates:
            // - `address` to the next owner.
            // - `startTimestamp` to the timestamp of transfering.
            // - `burned` to `false`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] =
                _addressToUint256(to) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                BITMASK_NEXT_INITIALIZED;

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

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

    /**
     * @dev Equivalent to `_burn(tokenId, false)`.
     */
    function _burn(uint256 tokenId) internal virtual {
        _burn(tokenId, false);
    }

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

        address from = address(uint160(prevOwnershipPacked));

        if (approvalCheck) {
            bool isApprovedOrOwner = (_msgSenderERC721A() == from ||
                isApprovedForAll(from, _msgSenderERC721A()) ||
                getApproved(tokenId) == _msgSenderERC721A());

            if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        // Clear approvals from the previous owner.
        delete _tokenApprovals[tokenId];

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
        unchecked {
            // Updates:
            // - `balance -= 1`.
            // - `numberBurned += 1`.
            //
            // We can directly decrement the balance, and increment the number burned.
            // This is equivalent to `packed -= 1; packed += 1 << BITPOS_NUMBER_BURNED;`.
            _packedAddressData[from] += (1 << BITPOS_NUMBER_BURNED) - 1;

            // Updates:
            // - `address` to the last owner.
            // - `startTimestamp` to the timestamp of burning.
            // - `burned` to `true`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] =
                _addressToUint256(from) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                BITMASK_BURNED | 
                BITMASK_NEXT_INITIALIZED;

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked {
            _burnCounter++;
        }
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target 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 _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
            bytes4 retval
        ) {
            return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     * And also called before burning one token.
     *
     * 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`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    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.
     * And also called after one token has been burned.
     *
     * 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` has been
     * transferred to `to`.
     * - When `from` is zero, `tokenId` has been minted for `to`.
     * - When `to` is zero, `tokenId` has been burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Returns the message sender (defaults to `msg.sender`).
     *
     * If you are writing GSN compatible contracts, you need to override this function.
     */
    function _msgSenderERC721A() internal view virtual returns (address) {
        return msg.sender;
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function _toString(uint256 value) internal pure returns (string memory ptr) {
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit), 
            // but we allocate 128 bytes to keep the free memory pointer 32-byte word aliged.
            // We will need 1 32-byte word to store the length, 
            // and 3 32-byte words to store a maximum of 78 digits. Total: 32 + 3 * 32 = 128.
            ptr := add(mload(0x40), 128)
            // Update the free memory pointer to allocate.
            mstore(0x40, ptr)

            // Cache the end of the memory to calculate the length later.
            let end := ptr

            // We write the string from the rightmost digit to the leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            // Costs a bit more than early returning for the zero case,
            // but cheaper in terms of deployment and overall runtime costs.
            for { 
                // Initialize and perform the first pass without check.
                let temp := value
                // Move the pointer 1 byte leftwards to point to an empty character slot.
                ptr := sub(ptr, 1)
                // Write the character to the pointer. 48 is the ASCII index of '0'.
                mstore8(ptr, add(48, mod(temp, 10)))
                temp := div(temp, 10)
            } temp { 
                // Keep dividing `temp` until zero.
                temp := div(temp, 10)
            } { // Body of the for loop.
                ptr := sub(ptr, 1)
                mstore8(ptr, add(48, mod(temp, 10)))
            }
            
            let length := sub(end, ptr)
            // Move the pointer 32 bytes leftwards to make room for the length.
            ptr := sub(ptr, 32)
            // Store the length.
            mstore(ptr, length)
        }
    }
}

File 11 of 11 : IERC721A.sol
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.0.0
// Creator: Chiru Labs

pragma solidity ^0.8.4;

/**
 * @dev Interface of an ERC721A compliant contract.
 */
interface IERC721A {
    /**
     * The caller must own the token or be an approved operator.
     */
    error ApprovalCallerNotOwnerNorApproved();

    /**
     * The token does not exist.
     */
    error ApprovalQueryForNonexistentToken();

    /**
     * The caller cannot approve to their own address.
     */
    error ApproveToCaller();

    /**
     * The caller cannot approve to the current owner.
     */
    error ApprovalToCurrentOwner();

    /**
     * Cannot query the balance for the zero address.
     */
    error BalanceQueryForZeroAddress();

    /**
     * Cannot mint to the zero address.
     */
    error MintToZeroAddress();

    /**
     * The quantity of tokens minted must be more than zero.
     */
    error MintZeroQuantity();

    /**
     * The token does not exist.
     */
    error OwnerQueryForNonexistentToken();

    /**
     * The caller must own the token or be an approved operator.
     */
    error TransferCallerNotOwnerNorApproved();

    /**
     * The token must be owned by `from`.
     */
    error TransferFromIncorrectOwner();

    /**
     * Cannot safely transfer to a contract that does not implement the ERC721Receiver interface.
     */
    error TransferToNonERC721ReceiverImplementer();

    /**
     * Cannot transfer to the zero address.
     */
    error TransferToZeroAddress();

    /**
     * The token does not exist.
     */
    error URIQueryForNonexistentToken();

    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Keeps track of the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
    }

    /**
     * @dev Returns the total amount of tokens stored by the contract.
     *
     * Burned tokens are calculated here, use `_totalMinted()` if you want to count just minted tokens.
     */
    function totalSupply() external view returns (uint256);

    // ==============================
    //            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);

    // ==============================
    //            IERC721
    // ==============================

    /**
     * @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`.
     *
     * 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;

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

    /**
     * @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);

    // ==============================
    //        IERC721Metadata
    // ==============================

    /**
     * @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);
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "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":"string","name":"_uri","type":"string"},{"internalType":"address[]","name":"_payees","type":"address[]"},{"internalType":"uint256[]","name":"_shares","type":"uint256[]"},{"internalType":"address","name":"_owner","type":"address"},{"components":[{"internalType":"uint16","name":"maxSupply","type":"uint16"},{"internalType":"uint16","name":"maxPerWallet","type":"uint16"},{"internalType":"uint16","name":"maxPerTransaction","type":"uint16"},{"internalType":"uint72","name":"preSalePrice","type":"uint72"},{"internalType":"uint72","name":"pubSalePrice","type":"uint72"},{"internalType":"bool","name":"preSaleIsActive","type":"bool"},{"internalType":"bool","name":"saleIsActive","type":"bool"},{"internalType":"bool","name":"claimIsActive","type":"bool"},{"internalType":"bool","name":"supplyLock","type":"bool"},{"internalType":"uint8","name":"salePhase","type":"uint8"},{"internalType":"uint8","name":"claimPhase","type":"uint8"}],"internalType":"struct ERC721AContract.Token","name":"_token","type":"tuple"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApprovalToCurrentOwner","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"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":"contract IERC20","name":"token","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"ERC20PaymentReleased","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":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"PayeeAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PaymentReceived","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PaymentReleased","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":[{"internalType":"address","name":"_address","type":"address"}],"name":"addFiatMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_maxMint","type":"uint16"},{"internalType":"uint16","name":"_quantity","type":"uint16"},{"internalType":"bytes32[]","name":"_proof","type":"bytes32[]"}],"name":"claimFree","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimMerkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"uint256","name":"_quantity","type":"uint256"}],"name":"claimTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"fiatAllowlist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"uint256","name":"_quantity","type":"uint256"}],"name":"getClaimIneligibilityReason","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"hasClaimed","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"hasMinted","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"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":[],"name":"lockSupply","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_quantity","type":"uint16"},{"internalType":"bytes32[]","name":"_proof","type":"bytes32[]"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"mintpassAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mintpassId","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":"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":"index","type":"uint256"}],"name":"payee","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"provenance","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"account","type":"address"}],"name":"release","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"address","name":"account","type":"address"}],"name":"release","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"address","name":"account","type":"address"}],"name":"released","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"released","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"removeFiatMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"uint16","name":"_quantity","type":"uint16"}],"name":"reserve","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":"saleMerkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_uri","type":"string"}],"name":"setBaseTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_root","type":"bytes32"}],"name":"setClaimRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_id","type":"uint256"},{"internalType":"address","name":"_address","type":"address"}],"name":"setMintPass","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"hash","type":"string"}],"name":"setProvenance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_root","type":"bytes32"}],"name":"setSaleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"shares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":[],"name":"token","outputs":[{"internalType":"uint16","name":"maxSupply","type":"uint16"},{"internalType":"uint16","name":"maxPerWallet","type":"uint16"},{"internalType":"uint16","name":"maxPerTransaction","type":"uint16"},{"internalType":"uint72","name":"preSalePrice","type":"uint72"},{"internalType":"uint72","name":"pubSalePrice","type":"uint72"},{"internalType":"bool","name":"preSaleIsActive","type":"bool"},{"internalType":"bool","name":"saleIsActive","type":"bool"},{"internalType":"bool","name":"claimIsActive","type":"bool"},{"internalType":"bool","name":"supplyLock","type":"bool"},{"internalType":"uint8","name":"salePhase","type":"uint8"},{"internalType":"uint8","name":"claimPhase","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"totalReleased","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalReleased","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"unclaimedSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_claimIsActive","type":"bool"},{"internalType":"uint8","name":"_claimPhase","type":"uint8"}],"name":"updateClaimState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_maxSupply","type":"uint16"},{"internalType":"uint16","name":"_maxPerWallet","type":"uint16"},{"internalType":"uint16","name":"_maxPerTransaction","type":"uint16"},{"internalType":"uint72","name":"_preSalePrice","type":"uint72"},{"internalType":"uint72","name":"_pubSalePrice","type":"uint72"}],"name":"updateConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_preSaleIsActive","type":"bool"},{"internalType":"bool","name":"_saleIsActive","type":"bool"},{"internalType":"uint8","name":"_salePhase","type":"uint8"}],"name":"updateSaleState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

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.