// Contract: Mablab
// Target function: function tokenURI(uint256 tokenId) isWithinExistence(tokenId) public view returns(string memory)
x';
		for(uint256 i = 2 * length + 1; i > 1; --i) {
			buffer[i] = _SYMBOLS[value & 0xf];
			value >>= 4;
		}

		return string(buffer);
	}

	function toHexString(address addr) internal pure returns(string memory) {
		return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
	}

	function stringLength(string memory s) internal pure returns(uint256) {
		return bytes(s).length;
	}
}

pragma solidity ^0.8.22;
abstract contract ERC165 is IERC165 {
	function supportsInterface(bytes4 interfaceId) public view virtual override returns(bool) {
		return interfaceId == type(IERC165).interfaceId;
	}
}

pragma solidity ^0.8.22;
contract ERC721 is Context, ERC165, IERC721, BlackListable {
	using Address for address;
	using Strings for uint256;

	mapping(uint256 => address) private _owners;
	mapping(address => uint256) private _balances;
	mapping(uint256 => address) private _tokenApprovals;
	mapping(address => mapping(address => bool)) private _operatorApprovals;
	mapping(address => bool) private _blackListedAddresses;

	modifier checkBlacklistOperator(address addy) {
		require(!_blackListedAddresses[addy], _strBlacklisted);
		_;
	}

	modifier checkBlacklistTransfer(address from, address to) {
		require(!_blackListedAddresses[from] && !_blackListedAddresses[to], _strBlacklisted);
		_;
	}

	/// @notice Blacklists an address, preventing it from transfer
	/// @param addy Address to blacklist.
	function blacklist(address addy) public {
		if(!_blackListedAddresses[addy]) {
			_blackListedAddresses[addy] = true;
		}
	}

	/// @notice Unblacklists an address, allowing it to transfer again.
	/// @param addy Address to unblacklist.
	function unblacklist(address addy) public {
		if(_blackListedAddresses[addy]) {
			_blackListedAddresses[addy] = false;
		}
	}

	/// @notice Returns whether or not an address is blacklisted.
	/// @param addy Address to check.
	function isBlacklisted(address addy) public view returns(string memory) {
		if(_blackListedAddresses[addy]) {
			return _strBlacklisted;
		}
		else {
			return _strNotBlacklisted;
		}
	}

	function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns(bool) {
		return
		interfaceId == type(IERC721).interfaceId ||
		super.supportsInterface(interfaceId);
	}

	function balanceOf(address owner) public view virtual override returns(uint256) {
		require(owner != address(0), _strBalanceZeroAddy);
		return _balances[owner];
	}

	function ownerOf(uint256 tokenId) public view virtual override returns(address) {
		address owner = _owners[tokenId];
		require(owner != address(0), _strOutOfBounds);
		return owner;
	}

	function approve(address to, uint256 tokenId) public checkBlacklistOperator(to) virtual override {
		address owner = ERC721.ownerOf(tokenId);
		require(to != owner, _strNotAuthorized);
		require(
			_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
				_strNotAuthorized
		);
		_approve(to, tokenId);
	}

	function getApproved(uint256 tokenId) public view virtual override returns(address) {
		require(_exists(tokenId), _strOutOfBounds);
		return _tokenApprovals[tokenId];
	}

	function setApprovalForAll(address operator, bool approved) public checkBlacklistOperator(operator) virtual override {
		require(operator != _msgSender(), _strNotAuthorized);
		_operatorApprovals[_msgSender()][operator] = approved;
		emit ApprovalForAll(_msgSender(), operator, approved);
	}

	function isApprovedForAll(address owner, address operator) public view virtual override returns(bool) {
		return _operatorApprovals[owner][operator];
	}

	function transferFrom(address from, address to, uint256 tokenId) public checkBlacklistTransfer(from, to) virtual override {
		require(_isApprovedOrOwner(_msgSender(), tokenId), _strNotAuthorized);
		_transfer(from, to, tokenId);
	}

	function safeTransferFrom(address from, address to, uint256 tokenId) public checkBlacklistTransfer(from, to) virtual override {
		safeTransferFrom(from, to, tokenId, '');
	}

	function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public checkBlacklistTransfer(from, to) virtual override {
		require(_isApprovedOrOwner(_msgSender(), tokenId), _strNotAuthorized);
		_safeTransfer(from, to, tokenId, _data);
	}

	function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal checkBlacklistTransfer(from, to) virtual {
		_transfer(from, to, tokenId);
		require(_checkOnERC721Received(from, to, tokenId, _data), _strTransferToNon721);
	}

	function _exists(uint256 tokenId) internal view virtual returns(bool) {
		return _owners[tokenId] != address(0);
	}

	function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns(bool) {
		require(_exists(tokenId), _strOutOfBounds);
		address owner = ERC721.ownerOf(tokenId);
		return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
	}

	function _safeMint(address to, uint256 tokenId) internal virtual {
		_safeMint(to, tokenId, '');
	}

	function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
		_mint(to, tokenId);
		require(
			_checkOnERC721Received(address(0), to, tokenId, _data),
				_strTransferToNon721
		);
	}

	function _mint(address to, uint256 tokenId) internal virtual {
		require(!_exists(tokenId), _strOutOfBounds);
		_balances[to] += 1;
		_owners[tokenId] = to;
		emit Transfer(address(0), to, tokenId);
	}

	function _transfer(address from, address to, uint256 tokenId) internal checkBlacklistTransfer(from, to) virtual {
		require(ERC721.ownerOf(tokenId) == from, _strNotAuthorized);
		require(to != address(0), _strTransferZeroAddy);
		require(_exists(tokenId), _strOutOfBounds);
		_approve(address(0), tokenId);
		_balances[from] -= 1;
		_balances[to] += 1;
		_owners[tokenId] = to;
		emit Transfer(from, to, tokenId);
	}

	function _approve(address to, uint256 tokenId) internal checkBlacklistOperator(to) virtual {
		_tokenApprovals[tokenId] = to;
		emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
	}

	function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns(bool) {
		if(to.isContract()) {
			try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns(bytes4 retval) {
				return retval == IERC721Receiver.onERC721Received.selector;
			} catch (bytes memory reason) {
				if(reason.length == 0) {
					revert(_strTransferToNon721);
				} else {
					assembly {
						revert(add(32, reason), mload(reason))
					}
				}
			}
		}
		else {
			return true;
		}
	}
}

pragma solidity ^0.8.22;
interface IERC4906 is IERC165, IERC721 {
	/// @notice This event emits when the metadata of a token is changed.
	/// So that the third-party platforms such as NFT market could
	/// timely update the images and related attributes of the NFT.
	event MetadataUpdate(uint256 _tokenId);

	/// @notice This event emits when the metadata of a range of tokens is changed.
	/// So that the third-party platforms such as NFT market could
	/// timely update the images and related attributes of the NFTs.
	event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);
}

pragma solidity ^0.8.22;
contract Ownable {
	string public constant NOT_CURRENT_OWNER = '018001';
	string public constant CANNOT_TRANSFER_TO_ZERO_ADDRESS = '018002';
	address public owner;
	event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

	constructor() {
		owner = msg.sender;
	}

	modifier onlyOwner() {
		require(msg.sender == owner, NOT_CURRENT_OWNER);
		_;
	}

	function transferOwnership(address _newOwner) public onlyOwner {
		require(_newOwner != address(0), CANNOT_TRANSFER_TO_ZERO_ADDRESS);
		emit OwnershipTransferred(owner, _newOwner);
		owner = _newOwner;
	}
}

pragma solidity ^0.8.22;

/**
 * @dev Tailored and pruned.
 */
library MerkleProof {
	function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
		return processProof(proof, leaf) == root;
	}

	function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
		bytes32 computedHash = leaf;
		for(uint256 i = 0; i < proof.length; i++) {
			computedHash = _hashPair(computedHash, proof[i]);
		}
		return computedHash;
	}

	function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
		bytes32 computedHash = leaf;
		for(uint256 i = 0; i < proof.length; i++) {
			computedHash = _hashPair(computedHash, proof[i]);
		}
		return computedHash;
	}

	function processMultiProof(bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves) internal pure returns (bytes32 merkleRoot) {
		uint256 leavesLen = leaves.length;
		uint256 totalHashes = proofFlags.length;

		require(leavesLen + proof.length - 1 == totalHashes, _strInvalidMultiproof);

		bytes32[] memory hashes = new bytes32[](totalHashes);
		uint256 leafPos = 0;
		uint256 hashPos = 0;
		uint256 proofPos = 0;

		for(uint256 i = 0; i < totalHashes; i++) {
			bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
			bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
			hashes[i] = _hashPair(a, b);
		}

		if(totalHashes > 0) {
			return hashes[totalHashes - 1];
		}
		else if(leavesLen > 0) {
			return leaves[0];
		}
		else {
			return proof[0];
		}
	}

	function processMultiProofCalldata(bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves) internal pure returns (bytes32 merkleRoot) {
		uint256 leavesLen = leaves.length;
		uint256 totalHashes = proofFlags.length;

		require(leavesLen + proof.length - 1 == totalHashes, _strInvalidMultiproof);

		bytes32[] memory hashes = new bytes32[](totalHashes);
		uint256 leafPos = 0;
		uint256 hashPos = 0;
		uint256 proofPos = 0;

		for(uint256 i = 0; i < totalHashes; i++) {
			bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
			bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
			hashes[i] = _hashPair(a, b);
		}

		if(totalHashes > 0) {
			return hashes[totalHashes - 1];
		}
		else if(leavesLen > 0) {
			return leaves[0];
		}
		else {
			return proof[0];
		}
	}

	function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
		return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
	}

	function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
		/// @solidity memory-safe-assembly
		assembly {
			mstore(0x00, a)
			mstore(0x20, b)
			value := keccak256(0x00, 0x40)
		}
	}
}

pragma solidity ^0.8.22;
contract Mablab is Context, ERC721, IERC4906 {
	using MerkleProof for bytes32[];
	event ReceivedRoyalties(address indexed creator, address indexed buyer, uint256 indexed amount);

	bool private _boolPaused = true;

	bytes32 _legitMerkleRoot = 0x9da2d7260bb59a40371b7bfb656798384e73b9b05f2f57c7bab1a451a0db48fd;

	uint256 private _mintFee = 39900000000000000; //39900000000000000, 0.0399 ETH.
	uint256 private _mintedTokens = 0;
	uint256 private _maxCap = 1669;
	uint256 private _sellerFeePoints = 1000; // 10%.

	uint256[] private tokenTracker;

	address private _addrContractOwner = 0x389D43178ad6076521C7F2Ca19bEEc806ef00D2a;
	address private _addrContractCopilot = 0x4DaE7E6c0Ca196643012cDc526bBc6b445A2ca59;

	string private _strMetadataURI = 'https://mablab.mypinata.cloud/ipfs/QmPAvaxvjw5UnfVxgj8vyp938Juh1YBZ6xXBYkNk4BojHm/';
	string private _strContractJSON = 'https://mablab.mypinata.cloud/ipfs/QmYYUuaaBWFGok1bAiZL7QsGnVuiQHZMYXCMduswGY2kGZ';

// ==================================================================
//                              MODIFIERS
// ==================================================================

	modifier isUnpaused() {
		require(!_boolPaused, _strPaused);
		_;
	}

	modifier isWithinExistence(uint256 tokenId) {
		require(tokenId > 0, _strOutOfBounds);
		require(tokenId <= _maxCap, _strOutOfBounds);
		require(_exists(tokenId), _strOutOfBounds);
		_;
	}

	modifier isMintable(uint256 tokenId) {
		require(tokenId > 0, _strOutOfBounds);
		require(tokenId <= _maxCap, _strOutOfBounds);
		require(!_exists(tokenId), _strAlreadyMinted);
		_;
	}

	modifier isAudited(uint256 tokenId, bytes32[] memory proof, string memory hash) {
		bytes32 _leaf = keccak256(bytes.concat(keccak256(abi.encode(tokenId, hash))));
		require(MerkleProof.verify(proof, _legitMerkleRoot, _leaf), _strNotAuthorized);
		_;
	}

	modifier onlyAdmin {
		require(_msgSender() == _addrContractOwner, _strNotAuthorized);
		_;
	}

	modifier onlyPilots {
		require((_msgSender() == _addrContractOwner || _msgSender() == _addrContractCopilot), _strNotAuthorized);
		_;
	}

	constructor() ERC721() {}

// ==================================================================
//                       MAIN PUBLIC FUNCTIONS
// ==================================================================

// ------------------------------------------------------------------
//                               GETTERS
// ------------------------------------------------------------------
	/// @notice Returns a URI to the contract's JSON.
	function contractURI() public view returns(string memory) {
		return _strContractJSON;
	}

	/// @notice Returns 1 if a given tokenId exists, 0 if it does not exist.
	/// @param tokenId Token ID.
	function isMinted(uint256 tokenId) public view returns(bool) {
		return _exists(tokenId);
	}

	/// @notice Returns how many minted tokens are at the moment.
	function mintedTokens() public view returns(uint256) {
		return _mintedTokens;
	}

	/// @notice Returns the mint value expressed in wei.
	function mintFee() public view returns(uint256) {
		return _mintFee;
	}

	/// @notice Returns the current Merkle root.
	function merkleRoot() public view returns(bytes32) {
		return _legitMerkleRoot;
	}

	/// @notice Returns the contract's name.
	function name() public view returns(string memory) {
		return _strTokenName;
	}

	function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns(bool) {
		return interfaceId == bytes4(0x49064906) || super.supportsInterface(interfaceId);
	}

	/// @notice Returns the contract's symbol, or ticker.
	function symbol() public view returns(string memory) {
		return _strTokenTicker;
	}