ETH Price: $2,573.34 (-1.23%)
Gas: 4 Gwei

Contract

0x7ca89d81329b02f1a63C7f73BA3de3acb73164BE
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Token Holdings

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Unstake Producer...204206502024-07-30 16:46:2312 days ago1722357983IN
0x7ca89d81...cb73164BE
0 ETH0.0014645810.26863278
Unstake Producer...204191892024-07-30 11:51:2312 days ago1722340283IN
0x7ca89d81...cb73164BE
0 ETH0.001239148.68802452
Unstake Producer...201104432024-06-17 8:54:1155 days ago1718614451IN
0x7ca89d81...cb73164BE
0 ETH0.000214543.27519751
Unstake Producer...201104402024-06-17 8:53:3555 days ago1718614415IN
0x7ca89d81...cb73164BE
0 ETH0.000216963.31215157
Unstake Producer...201104352024-06-17 8:52:3555 days ago1718614355IN
0x7ca89d81...cb73164BE
0 ETH0.000221643.38353531
Unstake Producer...199964492024-06-01 10:44:1171 days ago1717238651IN
0x7ca89d81...cb73164BE
0 ETH0.00037185.67583822
Unstake Producer...199064122024-05-19 20:37:2383 days ago1716151043IN
0x7ca89d81...cb73164BE
0 ETH0.000436273.05882755
Unstake Producer...198972162024-05-18 13:46:2385 days ago1716039983IN
0x7ca89d81...cb73164BE
0 ETH0.000514143.60483715
Unstake Producer...198719822024-05-15 1:06:1188 days ago1715735171IN
0x7ca89d81...cb73164BE
0 ETH0.000607435.83697006
Unstake Producer...198651532024-05-14 2:04:4789 days ago1715652287IN
0x7ca89d81...cb73164BE
0 ETH0.000531133.72395759
Unstake Producer...198608192024-05-13 11:32:4790 days ago1715599967IN
0x7ca89d81...cb73164BE
0 ETH0.000446573.13108562
Unstake Producer...198595732024-05-13 7:22:1190 days ago1715584931IN
0x7ca89d81...cb73164BE
0 ETH0.000653424.5813509
Unstake Producer...198078252024-05-06 1:39:5997 days ago1714959599IN
0x7ca89d81...cb73164BE
0 ETH0.000676334.74201617
Unstake Producer...197921912024-05-03 21:12:1199 days ago1714770731IN
0x7ca89d81...cb73164BE
0 ETH0.000900626.31456285
Unstake Producer...197792802024-05-02 1:52:35101 days ago1714614755IN
0x7ca89d81...cb73164BE
0 ETH0.000941246.59937884
Unstake Producer...197763482024-05-01 16:02:59102 days ago1714579379IN
0x7ca89d81...cb73164BE
0 ETH0.0014530210.18758009
Unstake Producer...197665682024-04-30 7:14:59103 days ago1714461299IN
0x7ca89d81...cb73164BE
0 ETH0.001095087.67799366
Unstake Producer...197619302024-04-29 15:42:35104 days ago1714405355IN
0x7ca89d81...cb73164BE
0 ETH0.0015657410.97787879
Unstake Producer...197608582024-04-29 12:05:47104 days ago1714392347IN
0x7ca89d81...cb73164BE
0 ETH0.0019691913.80659649
Unstake Producer...197599482024-04-29 9:02:47104 days ago1714381367IN
0x7ca89d81...cb73164BE
0 ETH0.001009729.7026011
Unstake Producer...197549002024-04-28 16:06:23105 days ago1714320383IN
0x7ca89d81...cb73164BE
0 ETH0.000887938.18927382
Unstake Producer...197460202024-04-27 10:18:11106 days ago1714213091IN
0x7ca89d81...cb73164BE
0 ETH0.000776825.446529
Unstake Producer...197449812024-04-27 6:47:23106 days ago1714200443IN
0x7ca89d81...cb73164BE
0 ETH0.000841085.89708091
Unstake Producer...197414342024-04-26 18:53:47107 days ago1714157627IN
0x7ca89d81...cb73164BE
0 ETH0.000810715.6841382
Unstake Producer...197413532024-04-26 18:37:23107 days ago1714156643IN
0x7ca89d81...cb73164BE
0 ETH0.000912236.39596751
View all transactions

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
ProducerPassStaking

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 17 : ProducerPassStaking.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol";

import "./WhiteRabbitProducerPass.sol";

/*
 * This contract allows users to stake and unstake producer passes
 * independent of any chapter in the White Rabbit IP
 */
contract ProducerPassStaking is Ownable, ERC1155Holder {
    mapping(uint256 => bool) public isProducerPassStakingEnabledForId;
    mapping(uint256 => bool) public isProducerPassUnstakingEnabledForId;

    mapping(address => mapping(uint256 => uint256))
        public stakedProducerPassesFromUser;
    ERC1155 public producerPassContract;

    function isStakingEnabledForChapter(uint256 chapter)
        public
        view
        virtual
        returns (bool)
    {
        return isProducerPassStakingEnabledForId[chapter];
    }

    function isUnstakingEnabledForChapter(uint256 chapter)
        public
        view
        virtual
        returns (bool)
    {
        return isProducerPassUnstakingEnabledForId[chapter];
    }

    function setProducerPassContract(address add) external onlyOwner {
        producerPassContract = ERC1155(add);
    }

    function setProducerPassStakingEnabledForIds(
        uint256[] calldata chapterIds,
        bool[] calldata enabled
    ) external onlyOwner {
        for (uint256 i = 0; i < chapterIds.length; i++) {
            uint256 chapterId = chapterIds[i];
            bool enable = enabled[i];
            isProducerPassStakingEnabledForId[chapterId] = enable;
        }
    }

    function setProducerPassUnstakingEnabledForIds(
        uint256[] calldata chapterIds,
        bool[] calldata enabled
    ) external onlyOwner {
        for (uint256 i = 0; i < chapterIds.length; i++) {
            uint256 chapterId = chapterIds[i];
            bool enable = enabled[i];
            isProducerPassUnstakingEnabledForId[chapterId] = enable;
        }
    }

    function stakeProducerPasses(
        uint256[] calldata chapterIds,
        uint256[] calldata amounts
    ) public {
        for (uint256 i = 0; i < chapterIds.length; i++) {
            uint256 chapterId = chapterIds[i];
            uint256 amount = amounts[i];
            require(
                isProducerPassStakingEnabledForId[chapterId],
                "Staking for this chapter Not enabled"
            );

            require(amount > 0, "Cannot stake 0");
            require(
                producerPassContract.balanceOf(msg.sender, chapterId) >= amount,
                "Insufficient pass balance"
            );
            producerPassContract.safeTransferFrom(
                msg.sender,
                address(this),
                chapterId,
                amount,
                ""
            );
            uint256 previousStakedAmount = stakedProducerPassesFromUser[
                msg.sender
            ][chapterId];
            stakedProducerPassesFromUser[msg.sender][chapterId] =
                previousStakedAmount +
                amount;
        }
    }

    function unstakeProducerPasses(
        uint256[] calldata chapterIds,
        uint256[] calldata amounts
    ) public {
        for (uint256 i = 0; i < chapterIds.length; i++) {
            uint256 chapterId = chapterIds[i];
            uint256 amount = amounts[i];
            require(
                isProducerPassUnstakingEnabledForId[chapterId],
                "Unstaking not enabled"
            );
            require(amount > 0, "Cannot unstake 0");
            require(
                stakedProducerPassesFromUser[msg.sender][chapterId] >= amount,
                "Not enough producer pass staked"
            );
            producerPassContract.safeTransferFrom(
                address(this),
                msg.sender,
                chapterId,
                amount,
                ""
            );
            uint256 previousStakedAmount = stakedProducerPassesFromUser[
                msg.sender
            ][chapterId];
            stakedProducerPassesFromUser[msg.sender][chapterId] =
                previousStakedAmount -
                amount;
        }
    }
}

File 2 of 17 : WhiteRabbitProducerPass.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";

struct ProducerPass {
    uint256 price;
    uint256 episodeId;
    uint256 maxSupply;
    uint256 maxPerWallet;
    uint256 openMintTimestamp; // unix timestamp in seconds
    bytes32 merkleRoot;
}

contract WhiteRabbitProducerPass is ERC1155, ERC1155Supply, Ownable {
    using Strings for uint256;

    // The name of the token ("White Rabbit Producer Pass")
    string public name;
    // The token symbol ("WRPP")
    string public symbol;

    // The wallet addresses of the two artists creating the film
    address payable private artistAddress1;
    address payable private artistAddress2;
    // The wallet addresses of the three developers managing the film
    address payable private devAddress1;
    address payable private devAddress2;
    address payable private devAddress3;

    // The royalty percentages for the artists and developers
    uint256 private constant ARTIST_ROYALTY_PERCENTAGE = 60;
    uint256 private constant DEV_ROYALTY_PERCENTAGE = 40;

    // A mapping of the number of Producer Passes minted per episodeId per user
    // userPassesMintedPerTokenId[msg.sender][episodeId] => number of minted passes
    mapping(address => mapping(uint256 => uint256))
        private userPassesMintedPerTokenId;

    // A mapping from episodeId to its Producer Pass
    mapping(uint256 => ProducerPass) private episodeToProducerPass;

    // Event emitted when a Producer Pass is bought
    event ProducerPassBought(
        uint256 episodeId,
        address indexed account,
        uint256 amount
    );

    /**
     * @dev Initializes the contract by setting the name and the token symbol
     */
    constructor(string memory baseURI) ERC1155(baseURI) {
        name = "White Rabbit Producer Pass";
        symbol = "WRPP";
    }

    /**
     * @dev Checks if the provided Merkle Proof is valid for the given root hash.
     */
    function isValidMerkleProof(bytes32[] calldata merkleProof, bytes32 root)
        internal
        view
        returns (bool)
    {
        return
            MerkleProof.verify(
                merkleProof,
                root,
                keccak256(abi.encodePacked(msg.sender))
            );
    }

    /**
     * @dev Retrieves the Producer Pass for a given episode.
     */
    function getEpisodeToProducerPass(uint256 episodeId)
        external
        view
        returns (ProducerPass memory)
    {
        return episodeToProducerPass[episodeId];
    }

    /**
     * @dev Contracts the metadata URI for the Producer Pass of the given episodeId.
     *
     * Requirements:
     *
     * - The Producer Pass exists for the given episode
     */
    function uri(uint256 episodeId)
        public
        view
        override
        returns (string memory)
    {
        require(
            episodeToProducerPass[episodeId].episodeId != 0,
            "Invalid episode"
        );
        return
            string(
                abi.encodePacked(
                    super.uri(episodeId),
                    episodeId.toString(),
                    ".json"
                )
            );
    }

    /**
     * Owner-only methods
     */

    /**
     * @dev Sets the base URI for the Producer Pass metadata.
     */
    function setBaseURI(string memory baseURI) external onlyOwner {
        _setURI(baseURI);
    }

    /**
     * @dev Sets the parameters on the Producer Pass struct for the given episode.
     */
    function setProducerPass(
        uint256 price,
        uint256 episodeId,
        uint256 maxSupply,
        uint256 maxPerWallet,
        uint256 openMintTimestamp,
        bytes32 merkleRoot
    ) external onlyOwner {
        episodeToProducerPass[episodeId] = ProducerPass(
            price,
            episodeId,
            maxSupply,
            maxPerWallet,
            openMintTimestamp,
            merkleRoot
        );
    }

    /**
     * @dev Withdraws the balance and distributes it to the artists and developers
     * based on the `ARTIST_ROYALTY_PERCENTAGE` and `DEV_ROYALTY_PERCENTAGE`.
     */
    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;
        uint256 artistBalance = (balance * ARTIST_ROYALTY_PERCENTAGE) / 100;
        uint256 balancePerArtist = artistBalance / 2;
        uint256 devBalance = (balance * DEV_ROYALTY_PERCENTAGE) / 100;
        uint256 balancePerDev = devBalance / 3;

        bool success;
        // Transfer artist balances
        (success, ) = artistAddress1.call{value: balancePerArtist}("");
        require(success, "Withdraw unsuccessful");

        (success, ) = artistAddress2.call{value: balancePerArtist}("");
        require(success, "Withdraw unsuccessful");

        // Transfer dev balances
        (success, ) = devAddress1.call{value: balancePerDev}("");
        require(success, "Withdraw unsuccessful");

        (success, ) = devAddress2.call{value: balancePerDev}("");
        require(success, "Withdraw unsuccessful");

        (success, ) = devAddress3.call{value: balancePerDev}("");
        require(success, "Withdraw unsuccessful");
    }

    /**
     * @dev Sets the royalty addresses for the two artists and three developers.
     */
    function setRoyaltyAddresses(
        address _a1,
        address _a2,
        address _d1,
        address _d2,
        address _d3
    ) external onlyOwner {
        artistAddress1 = payable(_a1);
        artistAddress2 = payable(_a2);
        devAddress1 = payable(_d1);
        devAddress2 = payable(_d2);
        devAddress3 = payable(_d3);
    }

    /**
     * @dev Creates a reserve of Producer Passes to set aside for gifting.
     *
     * Requirements:
     *
     * - There are enough Producer Passes to mint for the given episode
     * - The supply for the given episode does not exceed the maxSupply of the Producer Pass
     */
    function reserveProducerPassesForGifting(
        uint256 episodeId,
        uint256 amountEachAddress,
        address[] calldata addresses
    ) public onlyOwner {
        ProducerPass memory pass = episodeToProducerPass[episodeId];
        require(amountEachAddress > 0, "Amount cannot be 0");
        require(totalSupply(episodeId) < pass.maxSupply, "No passes to mint");
        require(
            totalSupply(episodeId) + amountEachAddress * addresses.length <=
                pass.maxSupply,
            "Cannot mint that many"
        );
        require(addresses.length > 0, "Need addresses");
        for (uint256 i = 0; i < addresses.length; i++) {
            address add = addresses[i];
            _mint(add, episodeId, amountEachAddress, "");
        }
    }

    /**
     * @dev Mints a set number of Producer Passes for a given episode.
     *
     * Emits a `ProducerPassBought` event indicating the Producer Pass was minted successfully.
     *
     * Requirements:
     *
     * - The current time is within the minting window for the given episode
     * - There are Producer Passes available to mint for the given episode
     * - The user is not trying to mint more than the maxSupply
     * - The user is not trying to mint more than the maxPerWallet
     * - The user has enough ETH for the transaction
     */
    function mintProducerPass(uint256 episodeId, uint256 amount)
        external
        payable
    {
        ProducerPass memory pass = episodeToProducerPass[episodeId];
        require(
            block.timestamp >= pass.openMintTimestamp,
            "Mint is not available"
        );
        require(totalSupply(episodeId) < pass.maxSupply, "Sold out");
        require(
            totalSupply(episodeId) + amount <= pass.maxSupply,
            "Cannot mint that many"
        );

        uint256 totalMintedPasses = userPassesMintedPerTokenId[msg.sender][
            episodeId
        ];
        require(
            totalMintedPasses + amount <= pass.maxPerWallet,
            "Exceeding maximum per wallet"
        );
        require(msg.value == pass.price * amount, "Not enough eth");

        userPassesMintedPerTokenId[msg.sender][episodeId] =
            totalMintedPasses +
            amount;
        _mint(msg.sender, episodeId, amount, "");

        emit ProducerPassBought(episodeId, msg.sender, amount);
    }

    /**
     * @dev For those on with early access (on the whitelist),
     * mints a set number of Producer Passes for a given episode.
     *
     * Emits a `ProducerPassBought` event indicating the Producer Pass was minted successfully.
     *
     * Requirements:
     *
     * - Provides a valid Merkle proof, indicating the user is on the whitelist
     * - There are Producer Passes available to mint for the given episode
     * - The user is not trying to mint more than the maxSupply
     * - The user is not trying to mint more than the maxPerWallet
     * - The user has enough ETH for the transaction
     */
    function earlyMintProducerPass(
        uint256 episodeId,
        uint256 amount,
        bytes32[] calldata merkleProof
    ) external payable {
        ProducerPass memory pass = episodeToProducerPass[episodeId];
        require(
            isValidMerkleProof(merkleProof, pass.merkleRoot),
            "Not authorized to mint"
        );
        require(totalSupply(episodeId) < pass.maxSupply, "Sold out");
        require(
            totalSupply(episodeId) + amount <= pass.maxSupply,
            "Cannot mint that many"
        );
        uint256 totalMintedPasses = userPassesMintedPerTokenId[msg.sender][
            episodeId
        ];
        require(
            totalMintedPasses + amount <= pass.maxPerWallet,
            "Exceeding maximum per wallet"
        );
        require(msg.value == pass.price * amount, "Not enough eth");

        userPassesMintedPerTokenId[msg.sender][episodeId] =
            totalMintedPasses +
            amount;
        _mint(msg.sender, episodeId, amount, "");
        emit ProducerPassBought(episodeId, msg.sender, amount);
    }

    /**
     * @dev Retrieves the number of Producer Passes a user has minted by episodeId.
     */
    function userPassesMintedByEpisodeId(uint256 episodeId)
        external
        view
        returns (uint256)
    {
        return userPassesMintedPerTokenId[msg.sender][episodeId];
    }

    /**
     * @dev Boilerplate override for `_beforeTokenTransfer`
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual override(ERC1155, ERC1155Supply) {
        super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
    }
}

File 3 of 17 : ERC1155Holder.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/utils/ERC1155Holder.sol)

pragma solidity ^0.8.0;

import "./ERC1155Receiver.sol";

/**
 * Simple implementation of `ERC1155Receiver` that will allow a contract to hold ERC1155 tokens.
 *
 * IMPORTANT: When inheriting this contract, you must include a way to use the received tokens, otherwise they will be
 * stuck.
 *
 * @dev _Available since v3.1._
 */
contract ERC1155Holder is ERC1155Receiver {
    function onERC1155Received(
        address,
        address,
        uint256,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155Received.selector;
    }

    function onERC1155BatchReceived(
        address,
        address,
        uint256[] memory,
        uint256[] memory,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155BatchReceived.selector;
    }
}

File 4 of 17 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

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

File 5 of 17 : ERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 6 of 17 : MerkleProof.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     *
     * _Available since v4.7._
     */
    function verifyCalldata(
        bytes32[] calldata proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

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

    /**
     * @dev Calldata version of {processProof}
     *
     * _Available since v4.7._
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     *
     * _Available since v4.7._
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

File 7 of 17 : ERC1155Supply.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC1155/extensions/ERC1155Supply.sol)

pragma solidity ^0.8.0;

import "../ERC1155.sol";

/**
 * @dev Extension of ERC1155 that adds tracking of total supply per id.
 *
 * Useful for scenarios where Fungible and Non-fungible tokens have to be
 * clearly identified. Note: While a totalSupply of 1 might mean the
 * corresponding is an NFT, there is no guarantees that no other token with the
 * same id are not going to be minted.
 */
abstract contract ERC1155Supply is ERC1155 {
    mapping(uint256 => uint256) private _totalSupply;

    /**
     * @dev Total amount of tokens in with a given id.
     */
    function totalSupply(uint256 id) public view virtual returns (uint256) {
        return _totalSupply[id];
    }

    /**
     * @dev Indicates whether any token exist with a given id, or not.
     */
    function exists(uint256 id) public view virtual returns (bool) {
        return ERC1155Supply.totalSupply(id) > 0;
    }

    /**
     * @dev See {ERC1155-_beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual override {
        super._beforeTokenTransfer(operator, from, to, ids, amounts, data);

        if (from == address(0)) {
            for (uint256 i = 0; i < ids.length; ++i) {
                _totalSupply[ids[i]] += amounts[i];
            }
        }

        if (to == address(0)) {
            for (uint256 i = 0; i < ids.length; ++i) {
                uint256 id = ids[i];
                uint256 amount = amounts[i];
                uint256 supply = _totalSupply[id];
                require(supply >= amount, "ERC1155: burn amount exceeds totalSupply");
                unchecked {
                    _totalSupply[id] = supply - amount;
                }
            }
        }
    }
}

File 8 of 17 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.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 `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);
    }
}

File 9 of 17 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 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 10 of 17 : ERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "../IERC1155Receiver.sol";
import "../../../utils/introspection/ERC165.sol";

/**
 * @dev _Available since v3.1._
 */
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
    }
}

File 11 of 17 : 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 12 of 17 : 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 13 of 17 : 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 14 of 17 : 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 15 of 17 : IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 16 of 17 : 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 17 of 17 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 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)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `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 10, 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 * 8) < value ? 1 : 0);
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"isProducerPassStakingEnabledForId","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"isProducerPassUnstakingEnabledForId","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"chapter","type":"uint256"}],"name":"isStakingEnabledForChapter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"chapter","type":"uint256"}],"name":"isUnstakingEnabledForChapter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155BatchReceived","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"producerPassContract","outputs":[{"internalType":"contract ERC1155","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"add","type":"address"}],"name":"setProducerPassContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"chapterIds","type":"uint256[]"},{"internalType":"bool[]","name":"enabled","type":"bool[]"}],"name":"setProducerPassStakingEnabledForIds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"chapterIds","type":"uint256[]"},{"internalType":"bool[]","name":"enabled","type":"bool[]"}],"name":"setProducerPassUnstakingEnabledForIds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"chapterIds","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"stakeProducerPasses","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakedProducerPassesFromUser","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"chapterIds","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"unstakeProducerPasses","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

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

Validator Index Block Amount
View All Withdrawals

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

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.