ETH Price: $2,637.15 (+1.47%)

 

Overview

TokenID

1

Total Transfers

-

Market

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-
Loading...
Loading
Loading...
Loading
Loading...
Loading

Click here to update the token information / general information
# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
Shortcuts

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 1000 runs

Other Settings:
default evmVersion
File 1 of 16 : Shortcuts.sol
/*
     β”“           
    ┏┣┓┏┓┏┓╋┏┓┏╋┏
    β”›β”›β”—β”—β”›β”› β”—β”—β”—β”»β”—β”›
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";


import "./libraries/Base64.sol";
import "./libraries/SSTORE2.sol";

/**
 * @title SHORTCUTS
 * @author diid.eth on behalf of cada.eth
 * @notice A path less followed
 */
contract Shortcuts is ERC1155, Ownable {
    uint public price = .03 ether;
    bool public saleActive = true;

    uint private _nextTokenId = 1;

    struct Token {
        string metadata;
        string mimeType;
        address[] chunks;
        string arweaveURI;
        uint[] dimensions;
        bool locked;
        bool migrated;
    }

    /**
     * @notice The mapping that contains the token data for a given edition
     */
    mapping(uint256 => Token) public tokenData;

    constructor() ERC1155("shortcuts") {}

    /*
    --------------------------
        METADATA FUNCTIONS
    --------------------------
    */

    /**
     * @notice updates the token `tokenId`
     * 
     * @param tokenId the token id to update
     * @param image The image data, split into bytes of max len 24576 (EVM contract limit)
     * @param mimeType The mime type for `image`
     */
    function moveTokenOnChain(
            uint256 tokenId,
            bytes[] calldata image,
            string calldata mimeType,
            uint[] calldata dimensions
    ) public onlyOwner {
        require(!tokenData[tokenId].locked, "Token is already locked.");

        tokenData[tokenId].mimeType = mimeType;

        delete tokenData[tokenId].chunks;

        for (uint8 i = 0; i < image.length;) {
            tokenData[tokenId].chunks.push(SSTORE2.write(image[i]));

            unchecked { i++; }
        }

        tokenData[tokenId].dimensions = dimensions;

        tokenData[tokenId].migrated = true;
    }
    
    function updateMetadata(uint256 tokenId, string calldata metadata) public onlyOwner {
        require(!tokenData[tokenId].locked, "Token is already locked.");

        tokenData[tokenId].metadata = metadata;
    }

    function updateArweaveUri(uint256 tokenId, string calldata arweaveUri) public onlyOwner {
        require(!tokenData[tokenId].locked, "Token is already locked.");

        tokenData[tokenId].arweaveURI = arweaveUri;
    }

    /**
     *  @notice Creates a token with `metadata` of type `mimeType` and image `image`.
     * 
     *  @param arweaveUri The arweave uri for the token
     *  @param metadata The string metadata for the token, expressed as a JSON with no opening or closing bracket, e.g. `"name": "hello!","description": "world!"`
     */
    function createToken(
        string calldata arweaveUri,
        string calldata metadata
    ) external onlyOwner {
        tokenData[_nextTokenId].arweaveURI = arweaveUri;
        tokenData[_nextTokenId].metadata = metadata;

        // save token id for the next card
        unchecked {
            _nextTokenId++;
        }
    }

    /**
     *  @notice Appends chunks of binary data to the chunks for a given token. If your image won't fit in a single "mint" transaction, you can use this to add data to it.
     *  @param tokenId The token to add data to
     *  @param chunks The chunks of data to add, max length for each individual chunk is 24576 bytes (EVM contract limit)
     */
    function appendChunks(
        uint256 tokenId,
        bytes[] calldata chunks
    ) external onlyOwner {
        require(!tokenData[tokenId].locked, "Token is already locked.");

        for (uint i = 0; i < chunks.length;) {
            tokenData[tokenId].chunks.push(SSTORE2.write(chunks[i]));

            unchecked { i++; }
        }
    }

    /**
     * @notice locks all token metadata permanently.
     */
    function lockAll() external onlyOwner {
        for (uint i = 0; i < _nextTokenId;) {
            tokenData[i].locked = true;

            unchecked { i++; }
        }
    }

    /**
     * @notice what are you doing here? this is an internal function!
     * @dev decomposes the binary image data and packs that in a valid JSON alongside the given metadata and mime type
     * 
     * @param tokenId the token id to pack
     */
    function _pack(uint256 tokenId) internal view returns (string memory) {
        if (!tokenData[tokenId].migrated) {
            return tokenData[tokenId].arweaveURI;
        }

        // prefix the image type with the URI prefix and mime type
        string memory image = string(
            abi.encodePacked(
                "data:",
                tokenData[tokenId].mimeType,
                ";base64,"
            )
        );

        // start by assembling all of the chunks in memory
        bytes memory data;
        for (uint8 i = 0; i < tokenData[tokenId].chunks.length; i++) {
            data = abi.encodePacked(
                data,
                SSTORE2.read(tokenData[tokenId].chunks[i])
            );
        }

        // base64 encode and append the image data!
        image = string(
            abi.encodePacked(
                image,
                Base64.encode(data)
            )
        );

        return image;
    }

    /**
     * @notice Returns the data URI for a given token
     * 
     * @param tokenId the token id to fetch metadata for
     */
    function uri(uint256 tokenId) public view override returns (string memory) {
        return string(
            abi.encodePacked(
                'data:application/json;utf8,{',
                tokenData[tokenId].metadata,
                ',"image":"',
                _pack(tokenId),
                '"}'
            )
        );
    }

    /*
    --------------------------
      END METADATA FUNCTIONS
    --------------------------
    */

    /*
    --------------------------
          MINT FUNCTIONS
    --------------------------
    */

    /**
     * @notice mints editions based on the value provided, should send number of packs to mint * mint price
     * 
     * Overall, this is far from the most gas-efficient way to do things here, but it is relatively foolproof which is more important to me. The usage of a single function for everything is * chefs kiss *
     */
    function mint() external payable {
        // check a few REALLY basic things
        require(saleActive == true, "Sale is not active!");
        require(msg.value % price == 0, "Invalid price.");

        // the number of packs requested to be minted is based
        // on the amount of ETH sent to this function. Give that
        // a real basic check first.
        uint packs = msg.value / price;

        uint tokens = _nextTokenId - 1;
        uint[] memory tokensToMint = new uint[](tokens);
        uint[] memory mintCount = new uint[](tokens);
        for (uint i = 0; i < tokens;) {
            tokensToMint[i] = i + 1;
            mintCount[i] = packs;

            unchecked { i++; }
        }

        // mint the tokens as a batch
        _mintBatch(msg.sender, tokensToMint, mintCount, "");
    }

    /*
    --------------------------
        END MINT FUNCTIONS
    --------------------------
    */

    /*
    --------------------------
           START ADMIN
    --------------------------
    */
    /**
     * @notice disables the sale permanently.
     */
    function stopSale() external onlyOwner {
        saleActive = false;
    }

    /**
     * @notice sets a new per-pack price
     * 
     * @param _price the new price to set
     */
    function setPrice(uint _price) external onlyOwner {
        price = _price;
    }

    /**
     * @notice withdraw to the owner
     */
    function withdraw() external onlyOwner {
        (bool s,) = owner().call{value: (address(this).balance)}("");
        require(s, "Withdraw failed.");
    }

    /*
    --------------------------
            END ADMIN
    --------------------------
    */
}

// diid wuz here

File 2 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 16 : ERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/ERC1155.sol)

pragma solidity ^0.8.0;

import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

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

    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
    string private _uri;

    /**
     * @dev See {_setURI}.
     */
    constructor(string memory uri_) {
        _setURI(uri_);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
        require(account != address(0), "ERC1155: address zero is not a valid owner");
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(
        address[] memory accounts,
        uint256[] memory ids
    ) public view virtual override returns (uint256[] memory) {
        require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf(accounts[i], ids[i]);
        }

        return batchBalances;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
    }

    /**
     * @dev Sets a new URI for all token types, by relying on the token type ID
     * substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * By this mechanism, any occurrence of the `\{id\}` substring in either the
     * URI or any of the amounts in the JSON file at said URI will be replaced by
     * clients with the token type ID.
     *
     * For example, the `https://token-cdn-domain/\{id\}.json` URI would be
     * interpreted by clients as
     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
     * for token type ID 0x4cce0.
     *
     * See {uri}.
     *
     * Because these URIs cannot be meaningfully represented by the {URI} event,
     * this function emits no events.
     */
    function _setURI(string memory newuri) internal virtual {
        _uri = newuri;
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(address to, uint256 id, uint256 amount, bytes memory data) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        _balances[id][to] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; i++) {
            _balances[ids[i]][to] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `from`
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `from` must have at least `amount` tokens of token type `id`.
     */
    function _burn(address from, uint256 id, uint256 amount) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }

        emit TransferSingle(operator, from, address(0), id, amount);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(address from, uint256[] memory ids, uint256[] memory amounts) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
        }

        emit TransferBatch(operator, from, address(0), ids, amounts);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC1155: setting approval status for self");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `ids` and `amounts` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `id` and `amount` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
                bytes4 response
            ) {
                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }
}

File 4 of 16 : IERC1155MetadataURI.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)

pragma solidity ^0.8.0;

import "../IERC1155.sol";

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

File 5 of 16 : IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

File 6 of 16 : IERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

File 7 of 16 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 8 of 16 : 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 9 of 16 : ERC165.sol
// 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;
    }
}

File 10 of 16 : IERC165.sol
// 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);
}

File 11 of 16 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // β†’ `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // β†’ `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

File 12 of 16 : SignedMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

File 13 of 16 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

File 14 of 16 : Base64.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// [MIT License]
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <[email protected]>
library Base64 {
    bytes internal constant TABLE =
        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /// @notice Encodes some bytes to the base64 representation
    function encode(bytes memory data) internal pure returns (string memory) {
        uint256 len = data.length;
        if (len == 0) return "";

        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((len + 2) / 3);

        // Add some extra buffer at the end
        bytes memory result = new bytes(encodedLen + 32);

        bytes memory table = TABLE;

        assembly {
            let tablePtr := add(table, 1)
            let resultPtr := add(result, 32)

            for {
                let i := 0
            } lt(i, len) {

            } {
                i := add(i, 3)
                let input := and(mload(add(data, i)), 0xffffff)

                let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
                out := shl(8, out)
                out := add(
                    out,
                    and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF)
                )
                out := shl(8, out)
                out := add(
                    out,
                    and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF)
                )
                out := shl(8, out)
                out := add(
                    out,
                    and(mload(add(tablePtr, and(input, 0x3F))), 0xFF)
                )
                out := shl(224, out)

                mstore(resultPtr, out)

                resultPtr := add(resultPtr, 4)
            }

            switch mod(len, 3)
            case 1 {
                mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
            }
            case 2 {
                mstore(sub(resultPtr, 1), shl(248, 0x3d))
            }

            mstore(result, encodedLen)
        }

        return string(result);
    }
}

File 15 of 16 : Bytecode.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;


library Bytecode {
  error InvalidCodeAtRange(uint256 _size, uint256 _start, uint256 _end);

  /**
    @notice Generate a creation code that results on a contract with `_code` as bytecode
    @param _code The returning value of the resulting `creationCode`
    @return creationCode (constructor) for new contract
  */
  function creationCodeFor(bytes memory _code) internal pure returns (bytes memory) {
    /*
      0x00    0x63         0x63XXXXXX  PUSH4 _code.length  size
      0x01    0x80         0x80        DUP1                size size
      0x02    0x60         0x600e      PUSH1 14            14 size size
      0x03    0x60         0x6000      PUSH1 00            0 14 size size
      0x04    0x39         0x39        CODECOPY            size
      0x05    0x60         0x6000      PUSH1 00            0 size
      0x06    0xf3         0xf3        RETURN
      <CODE>
    */

    return abi.encodePacked(
      hex"63",
      uint32(_code.length),
      hex"80_60_0E_60_00_39_60_00_F3",
      _code
    );
  }

  /**
    @notice Returns the size of the code on a given address
    @param _addr Address that may or may not contain code
    @return size of the code on the given `_addr`
  */
  function codeSize(address _addr) internal view returns (uint256 size) {
    assembly { size := extcodesize(_addr) }
  }

  /**
    @notice Returns the code of a given address
    @dev It will fail if `_end < _start`
    @param _addr Address that may or may not contain code
    @param _start number of bytes of code to skip on read
    @param _end index before which to end extraction
    @return oCode read from `_addr` deployed bytecode

    Forked from: https://gist.github.com/KardanovIR/fe98661df9338c842b4a30306d507fbd
  */
  function codeAt(address _addr, uint256 _start, uint256 _end) internal view returns (bytes memory oCode) {
    uint256 csize = codeSize(_addr);
    if (csize == 0) return bytes("");

    if (_start > csize) return bytes("");
    if (_end < _start) revert InvalidCodeAtRange(csize, _start, _end); 

    unchecked {
      uint256 reqSize = _end - _start;
      uint256 maxSize = csize - _start;

      uint256 size = maxSize < reqSize ? maxSize : reqSize;

      assembly {
        // allocate output byte array - this could also be done without assembly
        // by using o_code = new bytes(size)
        oCode := mload(0x40)
        // new "memory end" including padding
        mstore(0x40, add(oCode, and(add(add(size, 0x20), 0x1f), not(0x1f))))
        // store length in memory
        mstore(oCode, size)
        // actually retrieve the code, this needs assembly
        extcodecopy(_addr, add(oCode, 0x20), _start, size)
      }
    }
  }
}

File 16 of 16 : SSTORE2.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./Bytecode.sol";

/**
  @title A key-value storage with auto-generated keys for storing chunks of data with a lower write & read cost.
  @author Agustin Aguilar <[email protected]>

  Readme: https://github.com/0xsequence/sstore2#readme
*/
library SSTORE2 {
  error WriteError();

  /**
    @notice Stores `_data` and returns `pointer` as key for later retrieval
    @dev The pointer is a contract address with `_data` as code
    @param _data to be written
    @return pointer Pointer to the written `_data`
  */
  function write(bytes memory _data) internal returns (address pointer) {
    // Append 00 to _data so contract can't be called
    // Build init code
    bytes memory code = Bytecode.creationCodeFor(
      abi.encodePacked(
        hex'00',
        _data
      )
    );

    // Deploy contract using create
    assembly { pointer := create(0, add(code, 32), mload(code)) }

    // Address MUST be non-zero
    if (pointer == address(0)) revert WriteError();
  }

  /**
    @notice Reads the contents of the `_pointer` code as data, skips the first byte 
    @dev The function is intended for reading pointers generated by `write`
    @param _pointer to be read
    @return data read from `_pointer` contract
  */
  function read(address _pointer) internal view returns (bytes memory) {
    return Bytecode.codeAt(_pointer, 1, type(uint256).max);
  }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"_size","type":"uint256"},{"internalType":"uint256","name":"_start","type":"uint256"},{"internalType":"uint256","name":"_end","type":"uint256"}],"name":"InvalidCodeAtRange","type":"error"},{"inputs":[],"name":"WriteError","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"TransferBatch","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"TransferSingle","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"value","type":"string"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"}],"name":"URI","type":"event"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes[]","name":"chunks","type":"bytes[]"}],"name":"appendChunks","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"name":"balanceOfBatch","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"arweaveUri","type":"string"},{"internalType":"string","name":"metadata","type":"string"}],"name":"createToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lockAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes[]","name":"image","type":"bytes[]"},{"internalType":"string","name":"mimeType","type":"string"},{"internalType":"uint256[]","name":"dimensions","type":"uint256[]"}],"name":"moveTokenOnChain","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","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":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeBatchTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"uint256","name":"_price","type":"uint256"}],"name":"setPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stopSale","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tokenData","outputs":[{"internalType":"string","name":"metadata","type":"string"},{"internalType":"string","name":"mimeType","type":"string"},{"internalType":"string","name":"arweaveURI","type":"string"},{"internalType":"bool","name":"locked","type":"bool"},{"internalType":"bool","name":"migrated","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"string","name":"arweaveUri","type":"string"}],"name":"updateArweaveUri","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"string","name":"metadata","type":"string"}],"name":"updateMetadata","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"uri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Deployed Bytecode

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

Loading...
Loading
Loading...
Loading
[ Download: CSV Export  ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.