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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol";
import "@openzeppelin/contracts/security/PullPayment.sol";
import "./Brand.sol";

contract Minter is Ownable, PullPayment {
  Brand private _token;

  // minting management
	bool public mintEnabled;
	uint256 public mintPrice;
	uint256 public invitedMintDiscount;
	uint256 public invitedMintMaxDiscount;
	uint256 public discountedThresholdAmount;
	uint256 public discountThreshold;

  // ref management
  mapping (address => address) public referral;
  uint256 public inviterMintReward;
  uint256 public inviterMintMaxReward;

	// custom sells to partners
	mapping (address => uint256) public partnersThresholds;
	mapping (address => uint256) public partnersPrices;

  // payout vaults
	enum Vault {
		CREATORS,
		BRAND,
		CHARITY
	}
	mapping (Vault => address) public vaults;

  constructor(
    address token_, 
    address creatorsVault_, 
    address brandVault_, 
    address charityVault_, 
    uint256 mintPrice_, 
    uint256 invitedMintDiscount_, 
    uint256 invitedMintMaxDiscount_, 
    uint256 discountedThresholdAmount_,
    uint256 discountThreshold_,
    uint256 inviterMintReward_,
    uint256 inviterMintMaxReward_
  ) {
    _token = Brand(token_);

    mintPrice = mintPrice_;
    invitedMintDiscount = invitedMintDiscount_;
    invitedMintMaxDiscount = invitedMintMaxDiscount_;
    discountedThresholdAmount = discountedThresholdAmount_;
    discountThreshold = discountThreshold_;
    inviterMintReward = inviterMintReward_;
    inviterMintMaxReward = inviterMintMaxReward_;

    vaults[Vault.CREATORS] = creatorsVault_;
    vaults[Vault.BRAND] = brandVault_;
    vaults[Vault.CHARITY] = charityVault_;
  }

  // -- LOGIC IMPLEMENTATION ---------

  function partnerMint(uint256 amount_) public payable returns(bool) {
		require(mintEnabled == true, "Mint is closed.");
		require((partnersThresholds[msg.sender] - amount_) >= 0, "You already minted your NFTs.");
		require(msg.value >= (partnersPrices[msg.sender] * amount_), "Please check amount sent for mint.");

		_token.mint(msg.sender, amount_);
		partnersThresholds[msg.sender] -= amount_;

		_splitPayment(msg.value);

		return true;
	}

  function mint(uint256 amount_, address inviter_, bytes memory inviterSignature_, bytes32 inviterSignatureHash_) public payable returns(bool) {
    require(mintEnabled == true, "Mint is closed.");
    require(amount_ > 0, "Amount should be at least 1");
    require(msg.sender != inviter_, "You cannot invite yourself.");
    
    uint256 inviterTokenBalance;
    bool isInvited = false;
    if(inviter_ != address(0)) {
      inviterTokenBalance = _token.balanceOf(inviter_);
      require(SignatureChecker.isValidSignatureNow(inviter_, inviterSignatureHash_, inviterSignature_), "The inviter signature is invalid.");
      require(inviterTokenBalance > 0, "The inviter has no tokens.");
      require(referral[msg.sender] == address(0), "You have already minted with an invite.");
      isInvited = true;
    }

    require(msg.value >= calculateMintPrice(amount_, isInvited), "Please check amount sent for mint.");

    uint256 sentToInviter = _payoutInviter(inviter_, inviterTokenBalance, amount_);
    
    referral[msg.sender] = inviter_;
    _token.mint(msg.sender, amount_);
    
    _splitPayment(msg.value - sentToInviter);

    return true;
  }

	function reveal(string memory uri_) public onlyOwner {
		_token.reveal(uri_);
	}

	function toggleMint() public onlyOwner {
		mintEnabled = !mintEnabled;
	}

	function setMintPrice(uint256 price_) public onlyOwner {
		mintPrice = price_;
	}
	
  function setInvitedMintDiscountAndMaxDiscount(uint256 discount_, uint256 maxDiscount_) public onlyOwner {
    invitedMintDiscount = discount_;
    invitedMintMaxDiscount = maxDiscount_;
  }

  function setInviterMintRewardAndMaxReward(uint256 reward_, uint256 maxReward_) public onlyOwner {
    inviterMintReward = reward_;
    inviterMintMaxReward = maxReward_;
  }

	function setDiscountForThreshold(uint256 discount_, uint256 threshold_) public onlyOwner {
		discountedThresholdAmount = discount_;
    discountThreshold = threshold_;
	}

	function setPartnerThresholdAndPrice(address partner_, uint256 threshold_, uint256 price_) public onlyOwner {
		partnersThresholds[partner_] = threshold_;
    partnersPrices[partner_] = price_;
	}

  function setVault(Vault vault_, address address_) public onlyOwner {
		vaults[vault_] = address_;
	}

  function donate() payable public {
    _splitPayment(msg.value);
  }

  function calculateMintPrice(uint256 amount_, bool isInvited_) public view returns(uint256) {
    if(amount_ == 0) {
      return 0;
    }
    
    uint256 price = mintPrice * amount_;
    
    if(amount_ >= discountThreshold) {
      uint256 totalThresholdDiscount = uint(uint(amount_) / uint(discountThreshold)) * discountedThresholdAmount;
      price -= totalThresholdDiscount;
    }

    if(isInvited_) {
      uint256 totalInvitationDiscount = invitedMintDiscount * amount_;
      if(totalInvitationDiscount > invitedMintMaxDiscount) {
        totalInvitationDiscount = invitedMintMaxDiscount;
      }
      price -= totalInvitationDiscount;
    }

    return price;
  }

	function _splitPayment(uint256 amount_) private {
    _asyncTransfer(vaults[Vault.CREATORS], amount_ / 100 * 40);
    _asyncTransfer(vaults[Vault.BRAND], amount_ / 100 * 40);
    _asyncTransfer(vaults[Vault.CHARITY], amount_ / 100 * 20);
	}

  function _payoutInviter(address inviter_, uint256 inviterTokenBalance_, uint256 amount_) private returns(uint256) {
    if(inviterTokenBalance_ == 0) {
      return 0;
    }

    uint256 rewardPerMint = inviterTokenBalance_ * inviterMintReward;
    if(rewardPerMint > inviterMintMaxReward) {
      rewardPerMint = inviterMintMaxReward;
    }
    
    uint256 sentToInviter = rewardPerMint * amount_;
    payable(inviter_).transfer(sentToInviter);

    return sentToInviter;
  }
}

// SPDX-License-Identifier: MIT
// Creator: leb0wski.eth

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";
import "./ERC/ERC721A.sol";

contract NFT is ERC721A, Ownable {

	string public baseTokenURI;
	uint256 public maxSupply;

	string private _contractURI;
	uint256 private _maxMintPerTransaction;

	address public mintController;
	modifier onlyMintController {
		require(msg.sender == mintController, "Only Mint Controller can call the function");
		_;
	}

	constructor(
		string memory name_,
		string memory symbol_,
		uint256 maxSupply_,
		string memory contractURI_,
		string memory baseTokenURI_
	)
		ERC721A(name_, symbol_)
	{
		setContractURI(contractURI_);
		maxSupply = maxSupply_;
		baseTokenURI = baseTokenURI_;
	}

	function setMintController(address controller_) public onlyOwner returns(bool) {
		mintController = controller_;
		return true;
	}

	function mint(address to_, uint256 amount_) public onlyMintController {
		require(msg.sender == mintController);
		require(_currentIndex <= maxSupply, "The collection is sold out.");
		_safeMint(to_, amount_);
	}

	function contractURI() public view returns (string memory) {
		return _contractURI;
	}

	function reveal(string memory uri_) public onlyMintController {
		baseTokenURI = uri_;
	}

	function setContractURI(string memory contractURI_) public onlyOwner {
		_contractURI = contractURI_;
	}

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

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

// SPDX-License-Identifier: MIT
// Creator: Chiru Labs

pragma solidity ^0.8.4;

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

	error ApprovalCallerNotOwnerNorApproved();
	error ApprovalQueryForNonexistentToken();
	error ApproveToCaller();
	error ApprovalToCurrentOwner();
	error BalanceQueryForZeroAddress();
	error MintToZeroAddress();
	error MintZeroQuantity();
	error OwnerQueryForNonexistentToken();
	error TransferCallerNotOwnerNorApproved();
	error TransferFromIncorrectOwner();
	error TransferToNonERC721ReceiverImplementer();
	error TransferToZeroAddress();
	error URIQueryForNonexistentToken();

/**
 * @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 Context, ERC165, IERC721, IERC721Metadata {
	using Address for address;
	using Strings for uint256;

	// Compiler will pack this into a single 256bit word.
	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;
	}

	// Compiler will pack this into a single 256bit word.
	struct AddressData {
		// Realistically, 2**64-1 is more than enough.
		uint64 balance;
		// Keeps track of mint count with minimal overhead for tokenomics.
		uint64 numberMinted;
		// Keeps track of burn count with minimal overhead for tokenomics.
		uint64 numberBurned;
		// For miscellaneous variable(s) pertaining to the address
		// (e.g. number of whitelist mint slots used).
		// If there are multiple variables, please pack them into a uint64.
		uint64 aux;
	}

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

	// The number of tokens burned.
	uint256 internal _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 _ownershipOf implementation for details.
	mapping(uint256 => TokenOwnership) internal _ownerships;

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

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

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

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

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

	/**
	 * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
     */
	function totalSupply() public view returns (uint256) {
		// Counter underflow is impossible as _burnCounter cannot be incremented
		// more than _currentIndex - _startTokenId() times
	unchecked {
		return _currentIndex - _burnCounter - _startTokenId();
	}
	}

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

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

	/**
	 * Returns the number of tokens minted by `owner`.
	 */
	function _numberMinted(address owner) internal view returns (uint256) {
		return uint256(_addressData[owner].numberMinted);
	}

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

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

	/**
	 * 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) {
		uint256 curr = tokenId;

	unchecked {
		if (_startTokenId() <= curr && curr < _currentIndex) {
			TokenOwnership memory ownership = _ownerships[curr];
			if (!ownership.burned) {
				if (ownership.addr != address(0)) {
					return ownership;
				}
				// 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.
				while (true) {
					curr--;
					ownership = _ownerships[curr];
					if (ownership.addr != address(0)) {
						return ownership;
					}
				}
			}
		}
	}
		revert OwnerQueryForNonexistentToken();
	}

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

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

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

	/**
	 * @dev See {IERC721Metadata-tokenURI}.
     */
	function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
		if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

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

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

	/**
	 * @dev See {IERC721-approve}.
     */
	function approve(address to, uint256 tokenId) public override {
		address owner = ERC721A.ownerOf(tokenId);
		if (to == owner) revert ApprovalToCurrentOwner();

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

		_approve(to, tokenId, owner);
	}

	/**
	 * @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 == _msgSender()) revert ApproveToCaller();

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

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

	/**
	 * @dev See {IERC721-transferFrom}.
     */
	function transferFrom(
		address from,
		address to,
		uint256 tokenId
	) public virtual override {
		_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.isContract() && !_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 &&
		!_ownerships[tokenId].burned;
	}

	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 {
		_mint(to, quantity, _data, true);
	}

	/**
	 * @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,
		bytes memory _data,
		bool safe
	) 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 {
		_addressData[to].balance += uint64(quantity);
		_addressData[to].numberMinted += uint64(quantity);

		_ownerships[startTokenId].addr = to;
		_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);

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

		if (safe && to.isContract()) {
			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 Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
	function _transfer(
		address from,
		address to,
		uint256 tokenId
	) private {
		TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

		if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();

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

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

		_beforeTokenTransfers(from, to, tokenId, 1);

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

		// 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 {
		_addressData[from].balance -= 1;
		_addressData[to].balance += 1;

		TokenOwnership storage currSlot = _ownerships[tokenId];
		currSlot.addr = to;
		currSlot.startTimestamp = uint64(block.timestamp);

		// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
		// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
		uint256 nextTokenId = tokenId + 1;
		TokenOwnership storage nextSlot = _ownerships[nextTokenId];
		if (nextSlot.addr == address(0)) {
			// This will suffice for checking _exists(nextTokenId),
			// as a burned slot cannot contain the zero address.
			if (nextTokenId != _currentIndex) {
				nextSlot.addr = from;
				nextSlot.startTimestamp = prevOwnership.startTimestamp;
			}
		}
	}

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

	/**
	 * @dev This is 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 {
		TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

		address from = prevOwnership.addr;

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

			if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
		}

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

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

		// 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 {
		AddressData storage addressData = _addressData[from];
		addressData.balance -= 1;
		addressData.numberBurned += 1;

		// Keep track of who burned the token, and the timestamp of burning.
		TokenOwnership storage currSlot = _ownerships[tokenId];
		currSlot.addr = from;
		currSlot.startTimestamp = uint64(block.timestamp);
		currSlot.burned = true;

		// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
		// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
		uint256 nextTokenId = tokenId + 1;
		TokenOwnership storage nextSlot = _ownerships[nextTokenId];
		if (nextSlot.addr == address(0)) {
			// This will suffice for checking _exists(nextTokenId),
			// as a burned slot cannot contain the zero address.
			if (nextTokenId != _currentIndex) {
				nextSlot.addr = from;
				nextSlot.startTimestamp = prevOwnership.startTimestamp;
			}
		}
	}

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

	/**
	 * @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 IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
			return retval == IERC721Receiver(to).onERC721Received.selector;
		} catch (bytes memory reason) {
			if (reason.length == 0) {
				revert 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 {}
}

// SPDX-License-Identifier: MIT
// Creator: leb0wski.eth

pragma solidity ^0.8.4;

import "./NFT.sol";

contract Brand is NFT {

	uint256 constant public TOTAL_SUPPLY = 5432;
	uint256 constant public GOVERNANCE_SUPPLY = 56;
	uint256 constant public BRAND_SUPPLY = 50;

	constructor(
		string memory name_,
		string memory symbol_,
		string memory baseTokenURI_,
		string memory contractURI_
	)
		NFT(name_, symbol_, TOTAL_SUPPLY, contractURI_, baseTokenURI_)
	{}

	function setCreators(address[] memory creators_, address brand_) public onlyOwner {
		require(_currentIndex <= GOVERNANCE_SUPPLY, "Governance already distributed to creators");
		for(uint256 x; x < creators_.length; x++) {
			_safeMint(creators_[x], GOVERNANCE_SUPPLY / creators_.length);
		}
		_safeMint(brand_, BRAND_SUPPLY);
	}

	function isGovernance(uint256 id_) public pure returns (bool) {
		return id_ <= GOVERNANCE_SUPPLY;
	}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/escrow/Escrow.sol)

pragma solidity ^0.8.0;

import "../../access/Ownable.sol";
import "../Address.sol";

/**
 * @title Escrow
 * @dev Base escrow contract, holds funds designated for a payee until they
 * withdraw them.
 *
 * Intended usage: This contract (and derived escrow contracts) should be a
 * standalone contract, that only interacts with the contract that instantiated
 * it. That way, it is guaranteed that all Ether will be handled according to
 * the `Escrow` rules, and there is no need to check for payable functions or
 * transfers in the inheritance tree. The contract that uses the escrow as its
 * payment method should be its owner, and provide public methods redirecting
 * to the escrow's deposit and withdraw.
 */
contract Escrow is Ownable {
    using Address for address payable;

    event Deposited(address indexed payee, uint256 weiAmount);
    event Withdrawn(address indexed payee, uint256 weiAmount);

    mapping(address => uint256) private _deposits;

    function depositsOf(address payee) public view returns (uint256) {
        return _deposits[payee];
    }

    /**
     * @dev Stores the sent amount as credit to be withdrawn.
     * @param payee The destination address of the funds.
     */
    function deposit(address payee) public payable virtual onlyOwner {
        uint256 amount = msg.value;
        _deposits[payee] += amount;
        emit Deposited(payee, amount);
    }

    /**
     * @dev Withdraw accumulated balance for a payee, forwarding all gas to the
     * recipient.
     *
     * WARNING: Forwarding all gas opens the door to reentrancy vulnerabilities.
     * Make sure you trust the recipient, or are either following the
     * checks-effects-interactions pattern or using {ReentrancyGuard}.
     *
     * @param payee The address whose funds will be withdrawn and transferred to.
     */
    function withdraw(address payable payee) public virtual onlyOwner {
        uint256 payment = _deposits[payee];

        _deposits[payee] = 0;

        payee.sendValue(payment);

        emit Withdrawn(payee, payment);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/SignatureChecker.sol)

pragma solidity ^0.8.0;

import "./ECDSA.sol";
import "../Address.sol";
import "../../interfaces/IERC1271.sol";

/**
 * @dev Signature verification helper that can be used instead of `ECDSA.recover` to seamlessly support both ECDSA
 * signatures from externally owned accounts (EOAs) as well as ERC1271 signatures from smart contract wallets like
 * Argent and Gnosis Safe.
 *
 * _Available since v4.1._
 */
library SignatureChecker {
    /**
     * @dev Checks if a signature is valid for a given signer and data hash. If the signer is a smart contract, the
     * signature is validated against that smart contract using ERC1271, otherwise it's validated using `ECDSA.recover`.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidSignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature);
        if (error == ECDSA.RecoverError.NoError && recovered == signer) {
            return true;
        }

        (bool success, bytes memory result) = signer.staticcall(
            abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
        );
        return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// 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);
    }
}

// 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;
    }
}

// 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);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/PullPayment.sol)

pragma solidity ^0.8.0;

import "../utils/escrow/Escrow.sol";

/**
 * @dev Simple implementation of a
 * https://consensys.github.io/smart-contract-best-practices/recommendations/#favor-pull-over-push-for-external-calls[pull-payment]
 * strategy, where the paying contract doesn't interact directly with the
 * receiver account, which must withdraw its payments itself.
 *
 * Pull-payments are often considered the best practice when it comes to sending
 * Ether, security-wise. It prevents recipients from blocking execution, and
 * eliminates reentrancy concerns.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 *
 * To use, derive from the `PullPayment` contract, and use {_asyncTransfer}
 * instead of Solidity's `transfer` function. Payees can query their due
 * payments with {payments}, and retrieve them with {withdrawPayments}.
 */
abstract contract PullPayment {
    Escrow private immutable _escrow;

    constructor() {
        _escrow = new Escrow();
    }

    /**
     * @dev Withdraw accumulated payments, forwarding all gas to the recipient.
     *
     * Note that _any_ account can call this function, not just the `payee`.
     * This means that contracts unaware of the `PullPayment` protocol can still
     * receive funds this way, by having a separate account call
     * {withdrawPayments}.
     *
     * WARNING: Forwarding all gas opens the door to reentrancy vulnerabilities.
     * Make sure you trust the recipient, or are either following the
     * checks-effects-interactions pattern or using {ReentrancyGuard}.
     *
     * @param payee Whose payments will be withdrawn.
     */
    function withdrawPayments(address payable payee) public virtual {
        _escrow.withdraw(payee);
    }

    /**
     * @dev Returns the payments owed to an address.
     * @param dest The creditor's address.
     */
    function payments(address dest) public view returns (uint256) {
        return _escrow.depositsOf(dest);
    }

    /**
     * @dev Called by the payer to store the sent amount as credit to be pulled.
     * Funds sent in this way are stored in an intermediate {Escrow} contract, so
     * there is no danger of them being spent before withdrawal.
     *
     * @param dest The destination address of the funds.
     * @param amount The amount to transfer.
     */
    function _asyncTransfer(address dest, uint256 amount) internal virtual {
        _escrow.deposit{value: amount}(dest);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}

// 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);
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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me":"maxReward_","type":"uint256"}],"name":"setInviterMintRewardAndMaxReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price_","type":"uint256"}],"name":"setMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"partner_","type":"address"},{"internalType":"uint256","name":"threshold_","type":"uint256"},{"internalType":"uint256","name":"price_","type":"uint256"}],"name":"setPartnerThresholdAndPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum Minter.Vault","name":"vault_","type":"uint8"},{"internalType":"address","name":"address_","type":"address"}],"name":"setVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum Minter.Vault","name":"","type":"uint8"}],"name":"vaults","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"payee","type":"address"}],"name":"withdrawPayments","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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-----Decoded View---------------
Arg [0] : token_ (address): 0xEbE3452f8066592EbD43f43A3AA5589E9893D4df
Arg [1] : creatorsVault_ (address): 0xC9f4364A6298D0f9d37B587361e6E379ca3D39aA
Arg [2] : brandVault_ (address): 0xb8935b9cc968aD8E2d4af1adC874DD9dee56280f
Arg [3] : charityVault_ (address): 0xb8935b9cc968aD8E2d4af1adC874DD9dee56280f
Arg [4] : mintPrice_ (uint256): 150000000000000000
Arg [5] : invitedMintDiscount_ (uint256): 10000000000000000
Arg [6] : invitedMintMaxDiscount_ (uint256): 30000000000000000
Arg [7] : discountedThresholdAmount_ (uint256): 50000000000000000
Arg [8] : discountThreshold_ (uint256): 3
Arg [9] : inviterMintReward_ (uint256): 10000000000000000
Arg [10] : inviterMintMaxReward_ (uint256): 30000000000000000

-----Encoded View---------------
11 Constructor Arguments found :
Arg [0] : 000000000000000000000000ebe3452f8066592ebd43f43a3aa5589e9893d4df
Arg [1] : 000000000000000000000000c9f4364a6298d0f9d37b587361e6e379ca3d39aa
Arg [2] : 000000000000000000000000b8935b9cc968ad8e2d4af1adc874dd9dee56280f
Arg [3] : 000000000000000000000000b8935b9cc968ad8e2d4af1adc874dd9dee56280f
Arg [4] : 0000000000000000000000000000000000000000000000000214e8348c4f0000
Arg [5] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [6] : 000000000000000000000000000000000000000000000000006a94d74f430000
Arg [7] : 00000000000000000000000000000000000000000000000000b1a2bc2ec50000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [9] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [10] : 000000000000000000000000000000000000000000000000006a94d74f430000