// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.
    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;
    uint256 private _status;
    constructor() {
        _status = _NOT_ENTERED;
    }
    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
        _;
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IAdminACLV0 {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     * @param previousSuperAdmin The previous superAdmin address.
     * @param newSuperAdmin The new superAdmin address.
     * @param genArt721CoreAddressesToUpdate Array of genArt721Core
     * addresses to update to the new superAdmin, for indexing purposes only.
     */
    event SuperAdminTransferred(
        address indexed previousSuperAdmin,
        address indexed newSuperAdmin,
        address[] genArt721CoreAddressesToUpdate
    );
    /// Type of the Admin ACL contract, e.g. "AdminACLV0"
    function AdminACLType() external view returns (string memory);
    /// super admin address
    function superAdmin() external view returns (address);
    /**
     * @notice Calls transferOwnership on other contract from this contract.
     * This is useful for updating to a new AdminACL contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function transferOwnershipOn(
        address _contract,
        address _newAdminACL
    ) external;
    /**
     * @notice Calls renounceOwnership on other contract from this contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function renounceOwnershipOn(address _contract) external;
    /**
     * @notice Checks if sender `_sender` is allowed to call function with selector
     * `_selector` on contract `_contract`.
     */
    function allowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IFilteredMinterV0 {
    /**
     * @notice Price per token in wei updated for project `_projectId` to
     * `_pricePerTokenInWei`.
     */
    event PricePerTokenInWeiUpdated(
        uint256 indexed _projectId,
        uint256 indexed _pricePerTokenInWei
    );
    /**
     * @notice Currency updated for project `_projectId` to symbol
     * `_currencySymbol` and address `_currencyAddress`.
     */
    event ProjectCurrencyInfoUpdated(
        uint256 indexed _projectId,
        address indexed _currencyAddress,
        string _currencySymbol
    );
    /// togglePurchaseToDisabled updated
    event PurchaseToDisabledUpdated(
        uint256 indexed _projectId,
        bool _purchaseToDisabled
    );
    // getter function of public variable
    function minterType() external view returns (string memory);
    function genArt721CoreAddress() external returns (address);
    function minterFilterAddress() external returns (address);
    // Triggers a purchase of a token from the desired project, to the
    // TX-sending address.
    function purchase(
        uint256 _projectId
    ) external payable returns (uint256 tokenId);
    // Triggers a purchase of a token from the desired project, to the specified
    // receiving address.
    function purchaseTo(
        address _to,
        uint256 _projectId
    ) external payable returns (uint256 tokenId);
    // Toggles the ability for `purchaseTo` to be called directly with a
    // specified receiving address that differs from the TX-sending address.
    function togglePurchaseToDisabled(uint256 _projectId) external;
    // Called to make the minter contract aware of the max invocations for a
    // given project.
    function setProjectMaxInvocations(uint256 _projectId) external;
    // Gets if token price is configured, token price in wei, currency symbol,
    // and currency address, assuming this is project's minter.
    // Supersedes any defined core price.
    function getPriceInfo(
        uint256 _projectId
    )
        external
        view
        returns (
            bool isConfigured,
            uint256 tokenPriceInWei,
            string memory currencySymbol,
            address currencyAddress
        );
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "./IFilteredMinterV0.sol";
pragma solidity ^0.8.0;
/**
 * @title This interface extends the IFilteredMinterV0 interface in order to
 * add support for generic project minter configuration updates.
 * @dev keys represent strings of finite length encoded in bytes32 to minimize
 * gas.
 * @author Art Blocks Inc.
 */
interface IFilteredMinterV1 is IFilteredMinterV0 {
    /// ANY
    /**
     * @notice Generic project minter configuration event. Removes key `_key`
     * for project `_projectId`.
     */
    event ConfigKeyRemoved(uint256 indexed _projectId, bytes32 _key);
    /// BOOL
    /**
     * @notice Generic project minter configuration event. Sets value of key
     * `_key` to `_value` for project `_projectId`.
     */
    event ConfigValueSet(uint256 indexed _projectId, bytes32 _key, bool _value);
    /// UINT256
    /**
     * @notice Generic project minter configuration event. Sets value of key
     * `_key` to `_value` for project `_projectId`.
     */
    event ConfigValueSet(
        uint256 indexed _projectId,
        bytes32 _key,
        uint256 _value
    );
    /**
     * @notice Generic project minter configuration event. Adds value `_value`
     * to the set of uint256 at key `_key` for project `_projectId`.
     */
    event ConfigValueAddedToSet(
        uint256 indexed _projectId,
        bytes32 _key,
        uint256 _value
    );
    /**
     * @notice Generic project minter configuration event. Removes value
     * `_value` to the set of uint256 at key `_key` for project `_projectId`.
     */
    event ConfigValueRemovedFromSet(
        uint256 indexed _projectId,
        bytes32 _key,
        uint256 _value
    );
    /// ADDRESS
    /**
     * @notice Generic project minter configuration event. Sets value of key
     * `_key` to `_value` for project `_projectId`.
     */
    event ConfigValueSet(
        uint256 indexed _projectId,
        bytes32 _key,
        address _value
    );
    /**
     * @notice Generic project minter configuration event. Adds value `_value`
     * to the set of addresses at key `_key` for project `_projectId`.
     */
    event ConfigValueAddedToSet(
        uint256 indexed _projectId,
        bytes32 _key,
        address _value
    );
    /**
     * @notice Generic project minter configuration event. Removes value
     * `_value` to the set of addresses at key `_key` for project `_projectId`.
     */
    event ConfigValueRemovedFromSet(
        uint256 indexed _projectId,
        bytes32 _key,
        address _value
    );
    /// BYTES32
    /**
     * @notice Generic project minter configuration event. Sets value of key
     * `_key` to `_value` for project `_projectId`.
     */
    event ConfigValueSet(
        uint256 indexed _projectId,
        bytes32 _key,
        bytes32 _value
    );
    /**
     * @notice Generic project minter configuration event. Adds value `_value`
     * to the set of bytes32 at key `_key` for project `_projectId`.
     */
    event ConfigValueAddedToSet(
        uint256 indexed _projectId,
        bytes32 _key,
        bytes32 _value
    );
    /**
     * @notice Generic project minter configuration event. Removes value
     * `_value` to the set of bytes32 at key `_key` for project `_projectId`.
     */
    event ConfigValueRemovedFromSet(
        uint256 indexed _projectId,
        bytes32 _key,
        bytes32 _value
    );
    /**
     * @dev Strings not supported. Recommend conversion of (short) strings to
     * bytes32 to remain gas-efficient.
     */
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "./IFilteredMinterV1.sol";
pragma solidity ^0.8.0;
/**
 * @title This interface extends the IFilteredMinterV1 interface in order to
 * add support for manually setting project max invocations.
 * @author Art Blocks Inc.
 */
interface IFilteredMinterV2 is IFilteredMinterV1 {
    /**
     * @notice Local max invocations for project `_projectId`, tied to core contract `_coreContractAddress`,
     * updated to `_maxInvocations`.
     */
    event ProjectMaxInvocationsLimitUpdated(
        uint256 indexed _projectId,
        uint256 _maxInvocations
    );
    // Sets the local max invocations for a given project, checking that the provided max invocations is
    // less than or equal to the global max invocations for the project set on the core contract.
    // This does not impact the max invocations value defined on the core contract.
    function manuallyLimitProjectMaxInvocations(
        uint256 _projectId,
        uint256 _maxInvocations
    ) external;
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
/// use the Royalty Registry's IManifold interface for token royalties
import "./IManifold.sol";
/**
 * @title This interface is intended to house interface items that are common
 * across all GenArt721CoreContractV3 flagship and derivative implementations.
 * This interface extends the IManifold royalty interface in order to
 * add support the Royalty Registry by default.
 * @author Art Blocks Inc.
 */
interface IGenArt721CoreContractV3_Base is IManifold {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     */
    event Mint(address indexed _to, uint256 indexed _tokenId);
    /**
     * @notice currentMinter updated to `_currentMinter`.
     * @dev Implemented starting with V3 core
     */
    event MinterUpdated(address indexed _currentMinter);
    /**
     * @notice Platform updated on bytes32-encoded field `_field`.
     */
    event PlatformUpdated(bytes32 indexed _field);
    /**
     * @notice Project ID `_projectId` updated on bytes32-encoded field
     * `_update`.
     */
    event ProjectUpdated(uint256 indexed _projectId, bytes32 indexed _update);
    event ProposedArtistAddressesAndSplits(
        uint256 indexed _projectId,
        address _artistAddress,
        address _additionalPayeePrimarySales,
        uint256 _additionalPayeePrimarySalesPercentage,
        address _additionalPayeeSecondarySales,
        uint256 _additionalPayeeSecondarySalesPercentage
    );
    event AcceptedArtistAddressesAndSplits(uint256 indexed _projectId);
    // version and type of the core contract
    // coreVersion is a string of the form "0.x.y"
    function coreVersion() external view returns (string memory);
    // coreType is a string of the form "GenArt721CoreV3"
    function coreType() external view returns (string memory);
    // owner (pre-V3 was named admin) of contract
    // this is expected to be an Admin ACL contract for V3
    function owner() external view returns (address);
    // Admin ACL contract for V3, will be at the address owner()
    function adminACLContract() external returns (IAdminACLV0);
    // backwards-compatible (pre-V3) admin - equal to owner()
    function admin() external view returns (address);
    /**
     * Function determining if _sender is allowed to call function with
     * selector _selector on contract `_contract`. Intended to be used with
     * peripheral contracts such as minters, as well as internally by the
     * core contract itself.
     */
    function adminACLAllowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
    /// getter function of public variable
    function startingProjectId() external view returns (uint256);
    // getter function of public variable
    function nextProjectId() external view returns (uint256);
    // getter function of public mapping
    function tokenIdToProjectId(
        uint256 tokenId
    ) external view returns (uint256 projectId);
    // @dev this is not available in V0
    function isMintWhitelisted(address minter) external view returns (bool);
    function projectIdToArtistAddress(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySales(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySalesPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectIdToSecondaryMarketRoyaltyPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectURIInfo(
        uint256 _projectId
    ) external view returns (string memory projectBaseURI);
    // @dev new function in V3
    function projectStateData(
        uint256 _projectId
    )
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        );
    function projectDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory projectName,
            string memory artist,
            string memory description,
            string memory website,
            string memory license
        );
    function projectScriptDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory scriptTypeAndVersion,
            string memory aspectRatio,
            uint256 scriptCount
        );
    function projectScriptByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (string memory);
    function tokenIdToHash(uint256 _tokenId) external view returns (bytes32);
    // function to set a token's hash (must be guarded)
    function setTokenHash_8PT(uint256 _tokenId, bytes32 _hash) external;
    // @dev gas-optimized signature in V3 for `mint`
    function mint_Ecf(
        address _to,
        uint256 _projectId,
        address _by
    ) external returns (uint256 tokenId);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
import "./IGenArt721CoreContractV3_Base.sol";
interface IGenArt721CoreContractV3_Engine is IGenArt721CoreContractV3_Base {
    // @dev new function in V3
    function getPrimaryRevenueSplits(
        uint256 _projectId,
        uint256 _price
    )
        external
        view
        returns (
            uint256 renderProviderRevenue_,
            address payable renderProviderAddress_,
            uint256 platformProviderRevenue_,
            address payable platformProviderAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        );
    // @dev The render provider primary sales payment address
    function renderProviderPrimarySalesAddress()
        external
        view
        returns (address payable);
    // @dev The platform provider primary sales payment address
    function platformProviderPrimarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Percentage of primary sales allocated to the render provider
    function renderProviderPrimarySalesPercentage()
        external
        view
        returns (uint256);
    // @dev Percentage of primary sales allocated to the platform provider
    function platformProviderPrimarySalesPercentage()
        external
        view
        returns (uint256);
    // @dev The render provider secondary sales royalties payment address
    function renderProviderSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev The platform provider secondary sales royalties payment address
    function platformProviderSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Basis points of secondary sales allocated to the render provider
    function renderProviderSecondarySalesBPS() external view returns (uint256);
    // @dev Basis points of secondary sales allocated to the platform provider
    function platformProviderSecondarySalesBPS()
        external
        view
        returns (uint256);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
import "./IGenArt721CoreContractV3_Base.sol";
/**
 * @title This interface extends IGenArt721CoreContractV3_Base with functions
 * that are part of the Art Blocks Flagship core contract.
 * @author Art Blocks Inc.
 */
// This interface extends IGenArt721CoreContractV3_Base with functions that are
// in part of the Art Blocks Flagship core contract.
interface IGenArt721CoreContractV3 is IGenArt721CoreContractV3_Base {
    // @dev new function in V3
    function getPrimaryRevenueSplits(
        uint256 _projectId,
        uint256 _price
    )
        external
        view
        returns (
            uint256 artblocksRevenue_,
            address payable artblocksAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        );
    // @dev Art Blocks primary sales payment address
    function artblocksPrimarySalesAddress()
        external
        view
        returns (address payable);
    /**
     * @notice Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales payment address (now called artblocksPrimarySalesAddress).
     */
    function artblocksAddress() external view returns (address payable);
    // @dev Percentage of primary sales allocated to Art Blocks
    function artblocksPrimarySalesPercentage() external view returns (uint256);
    /**
     * @notice Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales percentage (now called artblocksPrimarySalesPercentage).
     */
    function artblocksPercentage() external view returns (uint256);
    // @dev Art Blocks secondary sales royalties payment address
    function artblocksSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Basis points of secondary sales allocated to Art Blocks
    function artblocksSecondarySalesBPS() external view returns (uint256);
    /**
     * @notice Backwards-compatible (pre-V3) function  that gets artist +
     * artist's additional payee royalty data for token ID `_tokenId`.
     * WARNING: Does not include Art Blocks portion of royalties.
     */
    function getRoyaltyData(
        uint256 _tokenId
    )
        external
        view
        returns (
            address artistAddress,
            address additionalPayee,
            uint256 additionalPayeePercentage,
            uint256 royaltyFeeByID
        );
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @dev Royalty Registry interface, used to support the Royalty Registry.
/// @dev Source: https://github.com/manifoldxyz/royalty-registry-solidity/blob/main/contracts/specs/IManifold.sol
/// @author: manifold.xyz
/**
 * @dev Royalty interface for creator core classes
 */
interface IManifold {
    /**
     * @dev Get royalites of a token.  Returns list of receivers and basisPoints
     *
     *  bytes4(keccak256('getRoyalties(uint256)')) == 0xbb3bafd6
     *
     *  => 0xbb3bafd6 = 0xbb3bafd6
     */
    function getRoyalties(
        uint256 tokenId
    ) external view returns (address payable[] memory, uint256[] memory);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "./IFilteredMinterV2.sol";
pragma solidity ^0.8.0;
/**
 * @title This interface defines any events or functions required for a minter
 * to conform to the MinterBase contract.
 * @dev The MinterBase contract was not implemented from the beginning of the
 * MinterSuite contract suite, therefore early versions of some minters may not
 * conform to this interface.
 * @author Art Blocks Inc.
 */
interface IMinterBaseV0 {
    // Function that returns if a minter is configured to integrate with a V3 flagship or V3 engine contract.
    // Returns true only if the minter is configured to integrate with an engine contract.
    function isEngine() external returns (bool isEngine);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IMinterFilterV0 {
    /**
     * @notice Emitted when contract is deployed to notify indexing services
     * of the new contract deployment.
     */
    event Deployed();
    /**
     * @notice Approved minter `_minterAddress`.
     */
    event MinterApproved(address indexed _minterAddress, string _minterType);
    /**
     * @notice Revoked approval for minter `_minterAddress`
     */
    event MinterRevoked(address indexed _minterAddress);
    /**
     * @notice Minter `_minterAddress` of type `_minterType`
     * registered for project `_projectId`.
     */
    event ProjectMinterRegistered(
        uint256 indexed _projectId,
        address indexed _minterAddress,
        string _minterType
    );
    /**
     * @notice Any active minter removed for project `_projectId`.
     */
    event ProjectMinterRemoved(uint256 indexed _projectId);
    function genArt721CoreAddress() external returns (address);
    function setMinterForProject(uint256, address) external;
    function removeMinterForProject(uint256) external;
    function mint(
        address _to,
        uint256 _projectId,
        address sender
    ) external returns (uint256);
    function getMinterForProject(uint256) external view returns (address);
    function projectHasMinter(uint256) external view returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "../../interfaces/v0.8.x/IMinterBaseV0.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3_Base.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3_Engine.sol";
import "@openzeppelin-4.7/contracts/token/ERC20/IERC20.sol";
pragma solidity ^0.8.0;
/**
 * @title Art Blocks Minter Base Class
 * @notice A base class for Art Blocks minter contracts that provides common
 * functionality used across minter contracts.
 * This contract is not intended to be deployed directly, but rather to be
 * inherited by other minter contracts.
 * From a design perspective, this contract is intended to remain simple and
 * easy to understand. It is not intended to cause a complex inheritance tree,
 * and instead should keep minter contracts as readable as possible for
 * collectors and developers.
 * @dev Semantic versioning is used in the solidity file name, and is therefore
 * controlled by contracts importing the appropriate filename version.
 * @author Art Blocks Inc.
 */
abstract contract MinterBase is IMinterBaseV0 {
    /// state variable that tracks whether this contract's associated core
    /// contract is an Engine contract, where Engine contracts have an
    /// additional revenue split for the platform provider
    bool public immutable isEngine;
    // @dev we do not track an initialization state, as the only state variable
    // is immutable, which the compiler enforces to be assigned during
    // construction.
    /**
     * @notice Initializes contract to ensure state variable `isEngine` is set
     * appropriately based on the minter's associated core contract address.
     * @param genArt721Address Art Blocks core contract address for
     * which this contract will be a minter.
     */
    constructor(address genArt721Address) {
        // set state variable isEngine
        isEngine = _getV3CoreIsEngine(genArt721Address);
    }
    /**
     * @notice splits ETH funds between sender (if refund), providers,
     * artist, and artist's additional payee for a token purchased on
     * project `_projectId`.
     * WARNING: This function uses msg.value and msg.sender to determine
     * refund amounts, and therefore may not be applicable to all use cases
     * (e.g. do not use with Dutch Auctions with on-chain settlement).
     * @dev possible DoS during splits is acknowledged, and mitigated by
     * business practices, including end-to-end testing on mainnet, and
     * admin-accepted artist payment addresses.
     * @param projectId Project ID for which funds shall be split.
     * @param pricePerTokenInWei Current price of token, in Wei.
     */
    function splitFundsETH(
        uint256 projectId,
        uint256 pricePerTokenInWei,
        address genArt721CoreAddress
    ) internal {
        if (msg.value > 0) {
            bool success_;
            // send refund to sender
            uint256 refund = msg.value - pricePerTokenInWei;
            if (refund > 0) {
                (success_, ) = msg.sender.call{value: refund}("");
                require(success_, "Refund failed");
            }
            // split revenues
            splitRevenuesETH(
                projectId,
                pricePerTokenInWei,
                genArt721CoreAddress
            );
        }
    }
    /**
     * @notice splits ETH revenues between providers, artist, and artist's
     * additional payee for revenue generated by project `_projectId`.
     * @dev possible DoS during splits is acknowledged, and mitigated by
     * business practices, including end-to-end testing on mainnet, and
     * admin-accepted artist payment addresses.
     * @param projectId Project ID for which funds shall be split.
     * @param valueInWei Value to be split, in Wei.
     */
    function splitRevenuesETH(
        uint256 projectId,
        uint256 valueInWei,
        address genArtCoreContract
    ) internal {
        if (valueInWei <= 0) {
            return; // return early
        }
        bool success;
        // split funds between platforms, artist, and artist's
        // additional payee
        uint256 renderProviderRevenue_;
        address payable renderProviderAddress_;
        uint256 artistRevenue_;
        address payable artistAddress_;
        uint256 additionalPayeePrimaryRevenue_;
        address payable additionalPayeePrimaryAddress_;
        if (isEngine) {
            // get engine splits
            uint256 platformProviderRevenue_;
            address payable platformProviderAddress_;
            (
                renderProviderRevenue_,
                renderProviderAddress_,
                platformProviderRevenue_,
                platformProviderAddress_,
                artistRevenue_,
                artistAddress_,
                additionalPayeePrimaryRevenue_,
                additionalPayeePrimaryAddress_
            ) = IGenArt721CoreContractV3_Engine(genArtCoreContract)
                .getPrimaryRevenueSplits(projectId, valueInWei);
            // Platform Provider payment (only possible if engine)
            if (platformProviderRevenue_ > 0) {
                (success, ) = platformProviderAddress_.call{
                    value: platformProviderRevenue_
                }("");
                require(success, "Platform Provider payment failed");
            }
        } else {
            // get flagship splits
            (
                renderProviderRevenue_, // artblocks revenue
                renderProviderAddress_, // artblocks address
                artistRevenue_,
                artistAddress_,
                additionalPayeePrimaryRevenue_,
                additionalPayeePrimaryAddress_
            ) = IGenArt721CoreContractV3(genArtCoreContract)
                .getPrimaryRevenueSplits(projectId, valueInWei);
        }
        // Render Provider / Art Blocks payment
        if (renderProviderRevenue_ > 0) {
            (success, ) = renderProviderAddress_.call{
                value: renderProviderRevenue_
            }("");
            require(success, "Render Provider payment failed");
        }
        // artist payment
        if (artistRevenue_ > 0) {
            (success, ) = artistAddress_.call{value: artistRevenue_}("");
            require(success, "Artist payment failed");
        }
        // additional payee payment
        if (additionalPayeePrimaryRevenue_ > 0) {
            (success, ) = additionalPayeePrimaryAddress_.call{
                value: additionalPayeePrimaryRevenue_
            }("");
            require(success, "Additional Payee payment failed");
        }
    }
    /**
     * @notice splits ERC-20 funds between providers, artist, and artist's
     * additional payee, for a token purchased on project `_projectId`.
     * @dev possible DoS during splits is acknowledged, and mitigated by
     * business practices, including end-to-end testing on mainnet, and
     * admin-accepted artist payment addresses.
     */
    function splitFundsERC20(
        uint256 projectId,
        uint256 pricePerTokenInWei,
        address currencyAddress,
        address genArtCoreContract
    ) internal {
        IERC20 _projectCurrency = IERC20(currencyAddress);
        // split remaining funds between foundation, artist, and artist's
        // additional payee
        uint256 renderProviderRevenue_;
        address payable renderProviderAddress_;
        uint256 artistRevenue_;
        address payable artistAddress_;
        uint256 additionalPayeePrimaryRevenue_;
        address payable additionalPayeePrimaryAddress_;
        if (isEngine) {
            // get engine splits
            uint256 platformProviderRevenue_;
            address payable platformProviderAddress_;
            (
                renderProviderRevenue_,
                renderProviderAddress_,
                platformProviderRevenue_,
                platformProviderAddress_,
                artistRevenue_,
                artistAddress_,
                additionalPayeePrimaryRevenue_,
                additionalPayeePrimaryAddress_
            ) = IGenArt721CoreContractV3_Engine(genArtCoreContract)
                .getPrimaryRevenueSplits(projectId, pricePerTokenInWei);
            // Platform Provider payment (only possible if engine)
            if (platformProviderRevenue_ > 0) {
                _projectCurrency.transferFrom(
                    msg.sender,
                    platformProviderAddress_,
                    platformProviderRevenue_
                );
            }
        } else {
            // get flagship splits
            (
                renderProviderRevenue_, // artblocks revenue
                renderProviderAddress_, // artblocks address
                artistRevenue_,
                artistAddress_,
                additionalPayeePrimaryRevenue_,
                additionalPayeePrimaryAddress_
            ) = IGenArt721CoreContractV3(genArtCoreContract)
                .getPrimaryRevenueSplits(projectId, pricePerTokenInWei);
        }
        // Art Blocks payment
        if (renderProviderRevenue_ > 0) {
            _projectCurrency.transferFrom(
                msg.sender,
                renderProviderAddress_,
                renderProviderRevenue_
            );
        }
        // artist payment
        if (artistRevenue_ > 0) {
            _projectCurrency.transferFrom(
                msg.sender,
                artistAddress_,
                artistRevenue_
            );
        }
        // additional payee payment
        if (additionalPayeePrimaryRevenue_ > 0) {
            _projectCurrency.transferFrom(
                msg.sender,
                additionalPayeePrimaryAddress_,
                additionalPayeePrimaryRevenue_
            );
        }
    }
    /**
     * @notice Returns whether a V3 core contract is an Art Blocks Engine
     * contract or not. Return value of false indicates that the core is a
     * flagship contract.
     * @dev this function reverts if a core contract does not return the
     * expected number of return values from getPrimaryRevenueSplits() for
     * either a flagship or engine core contract.
     * @dev this function uses the length of the return data (in bytes) to
     * determine whether the core is an engine or not.
     * @param genArt721CoreV3 The address of the deployed core contract.
     */
    function _getV3CoreIsEngine(
        address genArt721CoreV3
    ) private returns (bool) {
        // call getPrimaryRevenueSplits() on core contract
        bytes memory payload = abi.encodeWithSignature(
            "getPrimaryRevenueSplits(uint256,uint256)",
            0,
            0
        );
        (bool success, bytes memory returnData) = genArt721CoreV3.call(payload);
        require(success, "getPrimaryRevenueSplits() call failed");
        // determine whether core is engine or not, based on return data length
        uint256 returnDataLength = returnData.length;
        if (returnDataLength == 6 * 32) {
            // 6 32-byte words returned if flagship (not engine)
            // @dev 6 32-byte words are expected because the non-engine core
            // contracts return a payout address and uint256 payment value for
            // the artist, and artist's additional payee, and Art Blocks.
            // also note that per Solidity ABI encoding, the address return
            // values are padded to 32 bytes.
            return false;
        } else if (returnDataLength == 8 * 32) {
            // 8 32-byte words returned if engine
            // @dev 8 32-byte words are expected because the engine core
            // contracts return a payout address and uint256 payment value for
            // the artist, artist's additional payee, render provider
            // typically Art Blocks, and platform provider (partner).
            // also note that per Solidity ABI encoding, the address return
            // values are padded to 32 bytes.
            return true;
        } else {
            // unexpected return value length
            revert("Unexpected revenue split bytes");
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3_Base.sol";
import "../../interfaces/v0.8.x/IMinterFilterV0.sol";
import "../../interfaces/v0.8.x/IFilteredMinterV2.sol";
import "./MinterBase_v0_1_1.sol";
import "@openzeppelin-4.5/contracts/security/ReentrancyGuard.sol";
pragma solidity 0.8.19;
/**
 * @title Filtered Minter contract that allows tokens to be minted with ETH.
 * This is designed to be used with GenArt721CoreContractV3 flagship or
 * engine contracts.
 * @author Art Blocks Inc.
 * @notice Privileged Roles and Ownership:
 * This contract is designed to be managed, with limited powers.
 * Privileged roles and abilities are controlled by the project's artist, which
 * can be modified by the core contract's Admin ACL contract. Both of these
 * roles hold extensive power and can modify minter details.
 * Care must be taken to ensure that the admin ACL contract and artist
 * addresses are secure behind a multi-sig or other access control mechanism.
 * ----------------------------------------------------------------------------
 * The following functions are restricted to a project's artist:
 * - updatePricePerTokenInWei
 * - setProjectMaxInvocations
 * - manuallyLimitProjectMaxInvocations
 * ----------------------------------------------------------------------------
 * Additional admin and artist privileged roles may be described on other
 * contracts that this minter integrates with.
 */
contract MinterSetPriceV4 is ReentrancyGuard, MinterBase, IFilteredMinterV2 {
    /// Core contract address this minter interacts with
    address public immutable genArt721CoreAddress;
    /// The core contract integrates with V3 contracts
    IGenArt721CoreContractV3_Base private immutable genArtCoreContract_Base;
    /// Minter filter address this minter interacts with
    address public immutable minterFilterAddress;
    /// Minter filter this minter may interact with.
    IMinterFilterV0 private immutable minterFilter;
    /// minterType for this minter
    string public constant minterType = "MinterSetPriceV4";
    /// minter version for this minter
    string public constant minterVersion = "v4.1.0";
    uint256 constant ONE_MILLION = 1_000_000;
    struct ProjectConfig {
        bool maxHasBeenInvoked;
        bool priceIsConfigured;
        uint24 maxInvocations;
        uint256 pricePerTokenInWei;
    }
    mapping(uint256 => ProjectConfig) public projectConfig;
    function _onlyArtist(uint256 _projectId) internal view {
        require(
            msg.sender ==
                genArtCoreContract_Base.projectIdToArtistAddress(_projectId),
            "Only Artist"
        );
    }
    /**
     * @notice Initializes contract to be a Filtered Minter for
     * `_minterFilter`, integrated with Art Blocks core contract
     * at address `_genArt721Address`.
     * @param _genArt721Address Art Blocks core contract address for
     * which this contract will be a minter.
     * @param _minterFilter Minter filter for which this will be a
     * filtered minter.
     */
    constructor(
        address _genArt721Address,
        address _minterFilter
    ) ReentrancyGuard() MinterBase(_genArt721Address) {
        genArt721CoreAddress = _genArt721Address;
        // always populate immutable engine contracts, but only use appropriate
        // interface based on isEngine in the rest of the contract
        genArtCoreContract_Base = IGenArt721CoreContractV3_Base(
            _genArt721Address
        );
        minterFilterAddress = _minterFilter;
        minterFilter = IMinterFilterV0(_minterFilter);
        require(
            minterFilter.genArt721CoreAddress() == _genArt721Address,
            "Illegal contract pairing"
        );
    }
    /**
     * @notice Syncs local maximum invocations of project `_projectId` based on
     * the value currently defined in the core contract.
     * @param _projectId Project ID to set the maximum invocations for.
     * @dev this enables gas reduction after maxInvocations have been reached -
     * core contracts shall still enforce a maxInvocation check during mint.
     */
    function setProjectMaxInvocations(uint256 _projectId) public {
        _onlyArtist(_projectId);
        uint256 maxInvocations;
        uint256 invocations;
        (invocations, maxInvocations, , , , ) = genArtCoreContract_Base
            .projectStateData(_projectId);
        // update storage with results
        projectConfig[_projectId].maxInvocations = uint24(maxInvocations);
        // We need to ensure maxHasBeenInvoked is correctly set after manually syncing the
        // local maxInvocations value with the core contract's maxInvocations value.
        // This synced value of maxInvocations from the core contract will always be greater
        // than or equal to the previous value of maxInvocations stored locally.
        projectConfig[_projectId].maxHasBeenInvoked =
            invocations == maxInvocations;
        emit ProjectMaxInvocationsLimitUpdated(_projectId, maxInvocations);
    }
    /**
     * @notice Manually sets the local maximum invocations of project `_projectId`
     * with the provided `_maxInvocations`, checking that `_maxInvocations` is less
     * than or equal to the value of project `_project_id`'s maximum invocations that is
     * set on the core contract.
     * @dev Note that a `_maxInvocations` of 0 can only be set if the current `invocations`
     * value is also 0 and this would also set `maxHasBeenInvoked` to true, correctly short-circuiting
     * this minter's purchase function, avoiding extra gas costs from the core contract's maxInvocations check.
     * @param _projectId Project ID to set the maximum invocations for.
     * @param _maxInvocations Maximum invocations to set for the project.
     */
    function manuallyLimitProjectMaxInvocations(
        uint256 _projectId,
        uint256 _maxInvocations
    ) external {
        _onlyArtist(_projectId);
        // CHECKS
        // ensure that the manually set maxInvocations is not greater than what is set on the core contract
        uint256 maxInvocations;
        uint256 invocations;
        (invocations, maxInvocations, , , , ) = genArtCoreContract_Base
            .projectStateData(_projectId);
        require(
            _maxInvocations <= maxInvocations,
            "Cannot increase project max invocations above core contract set project max invocations"
        );
        require(
            _maxInvocations >= invocations,
            "Cannot set project max invocations to less than current invocations"
        );
        // EFFECTS
        // update storage with results
        projectConfig[_projectId].maxInvocations = uint24(_maxInvocations);
        // We need to ensure maxHasBeenInvoked is correctly set after manually setting the
        // local maxInvocations value.
        projectConfig[_projectId].maxHasBeenInvoked =
            invocations == _maxInvocations;
        emit ProjectMaxInvocationsLimitUpdated(_projectId, _maxInvocations);
    }
    /**
     * @notice Warning: Disabling purchaseTo is not supported on this minter.
     * This method exists purely for interface-conformance purposes.
     */
    function togglePurchaseToDisabled(uint256 _projectId) external view {
        _onlyArtist(_projectId);
        revert("Action not supported");
    }
    /**
     * @notice projectId => has project reached its maximum number of
     * invocations? Note that this returns a local cache of the core contract's
     * state, and may be out of sync with the core contract. This is
     * intentional, as it only enables gas optimization of mints after a
     * project's maximum invocations has been reached. A false negative will
     * only result in a gas cost increase, since the core contract will still
     * enforce a maxInvocation check during minting. A false positive is not
     * possible because the V3 core contract only allows maximum invocations
     * to be reduced, not increased. Based on this rationale, we intentionally
     * do not do input validation in this method as to whether or not the input
     * `_projectId` is an existing project ID.
     */
    function projectMaxHasBeenInvoked(
        uint256 _projectId
    ) external view returns (bool) {
        return projectConfig[_projectId].maxHasBeenInvoked;
    }
    /**
     * @notice projectId => project's maximum number of invocations.
     * Optionally synced with core contract value, for gas optimization.
     * Note that this returns a local cache of the core contract's
     * state, and may be out of sync with the core contract. This is
     * intentional, as it only enables gas optimization of mints after a
     * project's maximum invocations has been reached.
     * @dev A number greater than the core contract's project max invocations
     * will only result in a gas cost increase, since the core contract will
     * still enforce a maxInvocation check during minting. A number less than
     * the core contract's project max invocations is only possible when the
     * project's max invocations have not been synced on this minter, since the
     * V3 core contract only allows maximum invocations to be reduced, not
     * increased. When this happens, the minter will enable minting, allowing
     * the core contract to enforce the max invocations check. Based on this
     * rationale, we intentionally do not do input validation in this method as
     * to whether or not the input `_projectId` is an existing project ID.
     */
    function projectMaxInvocations(
        uint256 _projectId
    ) external view returns (uint256) {
        return uint256(projectConfig[_projectId].maxInvocations);
    }
    /**
     * @notice Updates this minter's price per token of project `_projectId`
     * to be '_pricePerTokenInWei`, in Wei.
     * This price supersedes any legacy core contract price per token value.
     * @dev Note that it is intentionally supported here that the configured
     * price may be explicitly set to `0`.
     */
    function updatePricePerTokenInWei(
        uint256 _projectId,
        uint256 _pricePerTokenInWei
    ) external {
        _onlyArtist(_projectId);
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        _projectConfig.pricePerTokenInWei = _pricePerTokenInWei;
        _projectConfig.priceIsConfigured = true;
        emit PricePerTokenInWeiUpdated(_projectId, _pricePerTokenInWei);
        // sync local max invocations if not initially populated
        // @dev if local max invocations and maxHasBeenInvoked are both
        // initial values, we know they have not been populated.
        if (
            _projectConfig.maxInvocations == 0 &&
            _projectConfig.maxHasBeenInvoked == false
        ) {
            setProjectMaxInvocations(_projectId);
        }
    }
    /**
     * @notice Purchases a token from project `_projectId`.
     * @param _projectId Project ID to mint a token on.
     * @return tokenId Token ID of minted token
     */
    function purchase(
        uint256 _projectId
    ) external payable returns (uint256 tokenId) {
        tokenId = purchaseTo_do6(msg.sender, _projectId);
        return tokenId;
    }
    /**
     * @notice gas-optimized version of purchase(uint256).
     */
    function purchase_H4M(
        uint256 _projectId
    ) external payable returns (uint256 tokenId) {
        tokenId = purchaseTo_do6(msg.sender, _projectId);
        return tokenId;
    }
    /**
     * @notice Purchases a token from project `_projectId` and sets
     * the token's owner to `_to`.
     * @param _to Address to be the new token's owner.
     * @param _projectId Project ID to mint a token on.
     * @return tokenId Token ID of minted token
     */
    function purchaseTo(
        address _to,
        uint256 _projectId
    ) external payable returns (uint256 tokenId) {
        return purchaseTo_do6(_to, _projectId);
    }
    /**
     * @notice gas-optimized version of purchaseTo(address, uint256).
     */
    function purchaseTo_do6(
        address _to,
        uint256 _projectId
    ) public payable nonReentrant returns (uint256 tokenId) {
        // CHECKS
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        // Note that `maxHasBeenInvoked` is only checked here to reduce gas
        // consumption after a project has been fully minted.
        // `_projectConfig.maxHasBeenInvoked` is locally cached to reduce
        // gas consumption, but if not in sync with the core contract's value,
        // the core contract also enforces its own max invocation check during
        // minting.
        require(
            !_projectConfig.maxHasBeenInvoked,
            "Maximum number of invocations reached"
        );
        // require artist to have configured price of token on this minter
        require(_projectConfig.priceIsConfigured, "Price not configured");
        // load price of token into memory
        uint256 pricePerTokenInWei = _projectConfig.pricePerTokenInWei;
        require(
            msg.value >= pricePerTokenInWei,
            "Must send minimum value to mint!"
        );
        // EFFECTS
        tokenId = minterFilter.mint(_to, _projectId, msg.sender);
        // invocation is token number plus one, and will never overflow due to
        // limit of 1e6 invocations per project. block scope for gas efficiency
        // (i.e. avoid an unnecessary var initialization to 0).
        unchecked {
            uint256 tokenInvocation = (tokenId % ONE_MILLION) + 1;
            uint256 localMaxInvocations = _projectConfig.maxInvocations;
            // handle the case where the token invocation == minter local max
            // invocations occurred on a different minter, and we have a stale
            // local maxHasBeenInvoked value returning a false negative.
            // @dev this is a CHECK after EFFECTS, so security was considered
            // in detail here.
            require(
                tokenInvocation <= localMaxInvocations,
                "Maximum invocations reached"
            );
            // in typical case, update the local maxHasBeenInvoked value
            // to true if the token invocation == minter local max invocations
            // (enables gas efficient reverts after sellout)
            if (tokenInvocation == localMaxInvocations) {
                _projectConfig.maxHasBeenInvoked = true;
            }
        }
        // INTERACTIONS
        splitFundsETH(_projectId, pricePerTokenInWei, genArt721CoreAddress);
        return tokenId;
    }
    /**
     * @notice Gets if price of token is configured, price of minting a
     * token on project `_projectId`, and currency symbol and address to be
     * used as payment. Supersedes any core contract price information.
     * @param _projectId Project ID to get price information for.
     * @return isConfigured true only if token price has been configured on
     * this minter
     * @return tokenPriceInWei current price of token on this minter - invalid
     * if price has not yet been configured
     * @return currencySymbol currency symbol for purchases of project on this
     * minter. This minter always returns "ETH"
     * @return currencyAddress currency address for purchases of project on
     * this minter. This minter always returns null address, reserved for ether
     */
    function getPriceInfo(
        uint256 _projectId
    )
        external
        view
        returns (
            bool isConfigured,
            uint256 tokenPriceInWei,
            string memory currencySymbol,
            address currencyAddress
        )
    {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        isConfigured = _projectConfig.priceIsConfigured;
        tokenPriceInWei = _projectConfig.pricePerTokenInWei;
        currencySymbol = "ETH";
        currencyAddress = address(0);
    }
}

// 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);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);
    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);
    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);
    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);
    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;
    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;
    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;
    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;
    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);
    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.
        return account.code.length > 0;
    }
    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_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) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }
    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }
    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
    /**
     * @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);
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity 0.8.19;
// Created By: Art Blocks Inc.
import "../../interfaces/v0.8.x/IRandomizer_V3CoreBase.sol";
import "../../interfaces/v0.8.x/IAdminACLV0.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3_Engine_Flex.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractExposesHashSeed.sol";
import "../../interfaces/v0.8.x/IDependencyRegistryCompatibleV0.sol";
import "../../interfaces/v0.8.x/IManifold.sol";
import "@openzeppelin-4.7/contracts/access/Ownable.sol";
import "../../libs/v0.8.x/ERC721_PackedHashSeed.sol";
import "../../libs/v0.8.x/BytecodeStorageV1.sol";
import "../../libs/v0.8.x/Bytes32Strings.sol";
/**
 * @title Art Blocks Engine Flex ERC-721 core contract, V3.
 * @author Art Blocks Inc.
 * @notice Privileged Roles and Ownership:
 * This contract is designed to be managed, with progressively limited powers
 * as a project progresses from active to locked.
 * Privileged roles and abilities are controlled by the admin ACL contract and
 * artists. Both of these roles hold extensive power and can arbitrarily
 * control and modify portions of projects, dependent upon project state. After
 * a project is locked, important project metadata fields are locked including
 * the project name, artist name, and script and display details. Edition size
 * can never be increased.
 * Care must be taken to ensure that the admin ACL contract and artist
 * addresses are secure behind a multi-sig or other access control mechanism.
 * ----------------------------------------------------------------------------
 * The following functions are restricted to the Admin ACL contract:
 * - updateArtblocksDependencyRegistryAddress
 * - updateProviderSalesAddresses
 * - updateProviderPrimarySalesPercentages (up to 100%)
 * - updateProviderSecondarySalesBPS (up to 100%)
 * - updateMinterContract
 * - updateRandomizerAddress
 * - toggleProjectIsActive
 * - addProject
 * - forbidNewProjects (forever forbidding new projects)
 * - updateDefaultBaseURI (used to initialize new project base URIs)
 * - updateIPFSGateway
 * - updateArweaveGateway
 * ----------------------------------------------------------------------------
 * The following functions are restricted to either the the Artist address or
 * the Admin ACL contract, only when the project is not locked:
 * - updateProjectName
 * - updateProjectArtistName
 * - updateProjectLicense
 * - Change project script via addProjectScript, updateProjectScript,
 *   and removeProjectLastScript
 * - updateProjectScriptType
 * - updateProjectAspectRatio
 * ----------------------------------------------------------------------------
 * The following functions are restricted to only the Artist address:
 * - proposeArtistPaymentAddressesAndSplits (Note that this has to be accepted
 *   by adminAcceptArtistAddressesAndSplits to take effect, which is restricted
 *   to the Admin ACL contract, or the artist if the core contract owner has
 *   renounced ownership. Also note that a proposal will be automatically
 *   accepted if the artist only proposes changed payee percentages without
 *   modifying any payee addresses, or is only removing payee addresses, or
 *   if the global config `autoApproveArtistSplitProposals` is set to `true`.)
 * - toggleProjectIsPaused (note the artist can still mint while paused)
 * - updateProjectSecondaryMarketRoyaltyPercentage (up to
     ARTIST_MAX_SECONDARY_ROYALTY_PERCENTAGE percent)
 * - updateProjectWebsite
 * - updateProjectMaxInvocations (to a number greater than or equal to the
 *   current number of invocations, and less than current project maximum
 *   invocations)
 * - updateProjectBaseURI (controlling the base URI for tokens in the project)
 * ----------------------------------------------------------------------------
 * The following function is restricted to either the Admin ACL contract, or
 * the Artist address if the core contract owner has renounced ownership:
 * - adminAcceptArtistAddressesAndSplits
 * - updateProjectArtistAddress (owner ultimately controlling the project and
 *   its and-on revenue, unless owner has renounced ownership)
 * ----------------------------------------------------------------------------
 * The following function is restricted to the artist when a project is
 * unlocked, and only callable by Admin ACL contract when a project is locked:
 * - updateProjectDescription
 * ----------------------------------------------------------------------------
 * The following functions for managing external asset dependencies are restricted
 * to projects with external asset dependencies that are unlocked:
 * - lockProjectExternalAssetDependencies 
 * - updateProjectExternalAssetDependency
 * - removeProjectExternalAssetDependency
 * - addProjectExternalAssetDependency
 * ----------------------------------------------------------------------------
 * The following function is restricted to owner calling directly:
 * - transferOwnership
 * - renounceOwnership
 * ----------------------------------------------------------------------------
 * The following configuration variables are set at time of contract deployment,
 * and not modifiable thereafter (immutable after the point of deployment):
 * - (bool) autoApproveArtistSplitProposals
 * ----------------------------------------------------------------------------
 * Additional admin and artist privileged roles may be described on minters,
 * registries, and other contracts that may interact with this core contract.
 */
contract GenArt721CoreV3_Engine_Flex is
    ERC721_PackedHashSeed,
    Ownable,
    IDependencyRegistryCompatibleV0,
    IManifold,
    IGenArt721CoreContractV3_Engine_Flex,
    IGenArt721CoreContractExposesHashSeed
{
    using BytecodeStorageWriter for string;
    using Bytes32Strings for bytes32;
    uint256 constant ONE_HUNDRED = 100;
    uint256 constant ONE_MILLION = 1_000_000;
    uint24 constant ONE_MILLION_UINT24 = 1_000_000;
    uint256 constant FOUR_WEEKS_IN_SECONDS = 2_419_200;
    uint8 constant AT_CHARACTER_CODE = uint8(bytes1("@")); // 0x40
    // numeric constants
    uint256 constant MAX_PROVIDER_SECONDARY_SALES_BPS = 10000; // 10_000 BPS = 100%
    uint256 constant ARTIST_MAX_SECONDARY_ROYALTY_PERCENTAGE = 95; // 95%
    // This contract emits generic events that contain fields that indicate
    // which parameter has been updated. This is sufficient for application
    // state management, while also simplifying the contract and indexing code.
    // This was done as an alternative to having custom events that emit what
    // field-values have changed for each event, given that changed values can
    // be introspected by indexers due to the design of this smart contract
    // exposing these state changes via publicly viewable fields.
    //
    // The following fields are used to indicate which contract-level parameter
    // has been updated in the `PlatformUpdated` event:
    bytes32 constant FIELD_NEXT_PROJECT_ID = "nextProjectId";
    bytes32 constant FIELD_NEW_PROJECTS_FORBIDDEN = "newProjectsForbidden";
    bytes32 constant FIELD_DEFAULT_BASE_URI = "defaultBaseURI";
    bytes32 constant FIELD_RANDOMIZER_ADDRESS = "randomizerAddress";
    bytes32 constant FIELD_ARTBLOCKS_DEPENDENCY_REGISTRY_ADDRESS =
        "dependencyRegistryAddress";
    bytes32 constant FIELD_PROVIDER_SALES_ADDRESSES = "providerSalesAddresses";
    bytes32 constant FIELD_PROVIDER_PRIMARY_SALES_PERCENTAGES =
        "providerPrimaryPercentages";
    bytes32 constant FIELD_PROVIDER_SECONDARY_SALES_BPS =
        "providerSecondaryBPS";
    // The following fields are used to indicate which project-level parameter
    // has been updated in the `ProjectUpdated` event:
    bytes32 constant FIELD_PROJECT_COMPLETED = "completed";
    bytes32 constant FIELD_PROJECT_ACTIVE = "active";
    bytes32 constant FIELD_PROJECT_ARTIST_ADDRESS = "artistAddress";
    bytes32 constant FIELD_PROJECT_PAUSED = "paused";
    bytes32 constant FIELD_PROJECT_CREATED = "created";
    bytes32 constant FIELD_PROJECT_NAME = "name";
    bytes32 constant FIELD_PROJECT_ARTIST_NAME = "artistName";
    bytes32 constant FIELD_PROJECT_SECONDARY_MARKET_ROYALTY_PERCENTAGE =
        "royaltyPercentage";
    bytes32 constant FIELD_PROJECT_DESCRIPTION = "description";
    bytes32 constant FIELD_PROJECT_WEBSITE = "website";
    bytes32 constant FIELD_PROJECT_LICENSE = "license";
    bytes32 constant FIELD_PROJECT_MAX_INVOCATIONS = "maxInvocations";
    bytes32 constant FIELD_PROJECT_SCRIPT = "script";
    bytes32 constant FIELD_PROJECT_SCRIPT_TYPE = "scriptType";
    bytes32 constant FIELD_PROJECT_ASPECT_RATIO = "aspectRatio";
    bytes32 constant FIELD_PROJECT_BASE_URI = "baseURI";
    /// Dependency registry managed by Art Blocks
    address public artblocksDependencyRegistryAddress;
    /// current randomizer contract
    IRandomizer_V3CoreBase public randomizerContract;
    /// append-only array of all randomizer contract addresses ever used by
    /// this contract
    address[] private _historicalRandomizerAddresses;
    /// admin ACL contract
    IAdminACLV0 public adminACLContract;
    struct Project {
        uint24 invocations;
        uint24 maxInvocations;
        uint24 scriptCount;
        // max uint64 ~= 1.8e19 sec ~= 570 billion years
        uint64 completedTimestamp;
        bool active;
        bool paused;
        string name;
        string artist;
        address descriptionAddress;
        string website;
        string license;
        string projectBaseURI;
        bytes32 scriptTypeAndVersion;
        string aspectRatio;
        // mapping from script index to address storing script in bytecode
        mapping(uint256 => address) scriptBytecodeAddresses;
        bool externalAssetDependenciesLocked;
        uint24 externalAssetDependencyCount;
        mapping(uint256 => ExternalAssetDependency) externalAssetDependencies;
    }
    mapping(uint256 => Project) projects;
    string public preferredIPFSGateway;
    string public preferredArweaveGateway;
    /// packed struct containing project financial information
    struct ProjectFinance {
        address payable additionalPayeePrimarySales;
        // packed uint: max of 95, max uint8 = 255
        uint8 secondaryMarketRoyaltyPercentage;
        address payable additionalPayeeSecondarySales;
        // packed uint: max of 100, max uint8 = 255
        uint8 additionalPayeeSecondarySalesPercentage;
        address payable artistAddress;
        // packed uint: max of 100, max uint8 = 255
        uint8 additionalPayeePrimarySalesPercentage;
    }
    // Project financials mapping
    mapping(uint256 => ProjectFinance) projectIdToFinancials;
    /// hash of artist's proposed payment updates to be approved by admin
    mapping(uint256 => bytes32) public proposedArtistAddressesAndSplitsHash;
    /// The render provider payment address for all primary sales revenues
    /// (packed)
    address payable public renderProviderPrimarySalesAddress;
    /// Percentage of primary sales revenue allocated to the render provider
    /// (packed)
    // packed uint: max of 100, max uint8 = 255
    uint8 private _renderProviderPrimarySalesPercentage = 10;
    /// The platform provider payment address for all primary sales revenues
    /// (packed)
    address payable public platformProviderPrimarySalesAddress;
    /// Percentage of primary sales revenue allocated to the platform provider
    /// (packed)
    // packed uint: max of 100, max uint8 = 255
    uint8 private _platformProviderPrimarySalesPercentage = 10;
    /// The render provider payment address for all secondary sales royalty
    /// revenues
    address payable public renderProviderSecondarySalesAddress;
    /// Basis Points of secondary sales royalties allocated to the
    /// render provider
    uint256 public renderProviderSecondarySalesBPS = 250;
    /// The platform provider payment address for all secondary sales royalty
    /// revenues
    address payable public platformProviderSecondarySalesAddress;
    /// Basis Points of secondary sales royalties allocated to the
    /// platform provider
    uint256 public platformProviderSecondarySalesBPS = 250;
    /// single minter allowed for this core contract
    address public minterContract;
    /// starting (initial) project ID on this contract
    uint256 public immutable startingProjectId;
    /// next project ID to be created
    uint248 private _nextProjectId;
    /// bool indicating if adding new projects is forbidden;
    /// default behavior is to allow new projects
    bool public newProjectsForbidden;
    /// configuration variable (determined at time of deployment)
    /// that determines whether or not admin approval^ should be required
    /// to accept artist address change proposals, or if these proposals
    /// should always auto-approve, as determined by the business process
    /// requirements of the Engine partner using this contract.
    ///
    /// ^does not apply in the case where contract-ownership itself is revoked
    bool public immutable autoApproveArtistSplitProposals;
    /// version & type of this core contract
    bytes32 constant CORE_VERSION = "v3.1.4";
    function coreVersion() external pure returns (string memory) {
        return CORE_VERSION.toString();
    }
    bytes32 constant CORE_TYPE = "GenArt721CoreV3_Engine_Flex";
    function coreType() external pure returns (string memory) {
        return CORE_TYPE.toString();
    }
    /// default base URI to initialize all new project projectBaseURI values to
    string public defaultBaseURI;
    function _onlyUnlockedProjectExternalAssetDependencies(
        uint256 _projectId
    ) internal view {
        require(
            !projects[_projectId].externalAssetDependenciesLocked,
            "External dependencies locked"
        );
    }
    function _onlyNonZeroAddress(address _address) internal pure {
        require(_address != address(0), "Must input non-zero address");
    }
    function _onlyNonEmptyString(string memory _string) internal pure {
        require(bytes(_string).length != 0, "Must input non-empty string");
    }
    function _onlyValidTokenId(uint256 _tokenId) internal view {
        require(_exists(_tokenId), "Token ID does not exist");
    }
    function _onlyValidProjectId(uint256 _projectId) internal view {
        require(
            (_projectId >= startingProjectId) && (_projectId < _nextProjectId),
            "Project ID does not exist"
        );
    }
    function _onlyUnlocked(uint256 _projectId) internal view {
        // Note: calling `_projectUnlocked` enforces that the `_projectId`
        //       passed in is valid.`
        require(_projectUnlocked(_projectId), "Only if unlocked");
    }
    function _onlyAdminACL(bytes4 _selector) internal {
        require(
            adminACLAllowed(msg.sender, address(this), _selector),
            "Only Admin ACL allowed"
        );
    }
    function _onlyArtist(uint256 _projectId) internal view {
        require(
            msg.sender == projectIdToFinancials[_projectId].artistAddress,
            "Only artist"
        );
    }
    function _onlyArtistOrAdminACL(
        uint256 _projectId,
        bytes4 _selector
    ) internal {
        require(
            msg.sender == projectIdToFinancials[_projectId].artistAddress ||
                adminACLAllowed(msg.sender, address(this), _selector),
            "Only artist or Admin ACL allowed"
        );
    }
    /**
     * This modifier allows the artist of a project to call a function if the
     * owner of the contract has renounced ownership. This is to allow the
     * contract to continue to function if the owner decides to renounce
     * ownership.
     */
    function _onlyAdminACLOrRenouncedArtist(
        uint256 _projectId,
        bytes4 _selector
    ) internal {
        require(
            adminACLAllowed(msg.sender, address(this), _selector) ||
                (owner() == address(0) &&
                    msg.sender ==
                    projectIdToFinancials[_projectId].artistAddress),
            "Only Admin ACL allowed, or artist if owner has renounced"
        );
    }
    /**
     * @notice Initializes contract.
     * @param _tokenName Name of token.
     * @param _tokenSymbol Token symbol.
     * @param _randomizerContract Randomizer contract.
     * @param _adminACLContract Address of admin access control contract, to be
     * set as contract owner.
     * @param _startingProjectId The initial next project ID.
     * @param _autoApproveArtistSplitProposals Whether or not to always
     * auto-approve proposed artist split updates.
     * @dev _startingProjectId should be set to a value much, much less than
     * max(uint248), but an explicit input type of `uint248` is used as it is
     * safer to cast up to `uint256` than it is to cast down for the purposes
     * of setting `_nextProjectId`.
     */
    constructor(
        string memory _tokenName,
        string memory _tokenSymbol,
        address _renderProviderAddress,
        address _platformProviderAddress,
        address _randomizerContract,
        address _adminACLContract,
        uint248 _startingProjectId,
        bool _autoApproveArtistSplitProposals
    ) ERC721_PackedHashSeed(_tokenName, _tokenSymbol) {
        _onlyNonZeroAddress(_renderProviderAddress);
        _onlyNonZeroAddress(_platformProviderAddress);
        _onlyNonZeroAddress(_randomizerContract);
        _onlyNonZeroAddress(_adminACLContract);
        // setup immutable `autoApproveArtistSplitProposals` config
        autoApproveArtistSplitProposals = _autoApproveArtistSplitProposals;
        // record contracts starting project ID
        // casting-up is safe
        startingProjectId = uint256(_startingProjectId);
        _updateProviderSalesAddresses(
            _renderProviderAddress,
            _renderProviderAddress,
            _platformProviderAddress,
            _platformProviderAddress
        );
        _updateRandomizerAddress(_randomizerContract);
        // set AdminACL management contract as owner
        _transferOwnership(_adminACLContract);
        // initialize default base URI
        _updateDefaultBaseURI(
            string.concat(
                "https://token.artblocks.io/",
                toHexString(address(this)),
                "/"
            )
        );
        // initialize next project ID
        _nextProjectId = _startingProjectId;
        emit PlatformUpdated(FIELD_NEXT_PROJECT_ID);
        // @dev follow-on action: This contract does not self-register. A core
        // registry owner must register contract in a subsequent call.
    }
    /**
     * @notice Updates preferredIPFSGateway to `_gateway`.
     */
    function updateIPFSGateway(string calldata _gateway) public {
        _onlyAdminACL(this.updateIPFSGateway.selector);
        preferredIPFSGateway = _gateway;
        emit GatewayUpdated(ExternalAssetDependencyType.IPFS, _gateway);
    }
    /**
     * @notice Updates preferredArweaveGateway to `_gateway`.
     */
    function updateArweaveGateway(string calldata _gateway) public {
        _onlyAdminACL(this.updateArweaveGateway.selector);
        preferredArweaveGateway = _gateway;
        emit GatewayUpdated(ExternalAssetDependencyType.ARWEAVE, _gateway);
    }
    /**
     * @notice Locks external asset dependencies for project `_projectId`.
     */
    function lockProjectExternalAssetDependencies(uint256 _projectId) external {
        _onlyUnlockedProjectExternalAssetDependencies(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.lockProjectExternalAssetDependencies.selector
        );
        projects[_projectId].externalAssetDependenciesLocked = true;
        emit ProjectExternalAssetDependenciesLocked(_projectId);
    }
    /**
     * @notice Updates external asset dependency for project `_projectId`.
     * @param _projectId Project to be updated.
     * @param _index Asset index.
     * @param _cidOrData Asset cid (Content identifier) or data string to be translated into bytecode.
     * @param _dependencyType Asset dependency type.
     *  0 - IPFS
     *  1 - ARWEAVE
     *  2 - ONCHAIN
     */
    function updateProjectExternalAssetDependency(
        uint256 _projectId,
        uint256 _index,
        string memory _cidOrData,
        ExternalAssetDependencyType _dependencyType
    ) external {
        _onlyUnlockedProjectExternalAssetDependencies(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.updateProjectExternalAssetDependency.selector
        );
        uint24 assetCount = projects[_projectId].externalAssetDependencyCount;
        require(_index < assetCount, "Asset index out of range");
        ExternalAssetDependency storage _oldDependency = projects[_projectId]
            .externalAssetDependencies[_index];
        ExternalAssetDependencyType _oldDependencyType = _oldDependency
            .dependencyType;
        projects[_projectId]
            .externalAssetDependencies[_index]
            .dependencyType = _dependencyType;
        // if the incoming dependency type is onchain, we need to write the data to bytecode
        if (_dependencyType == ExternalAssetDependencyType.ONCHAIN) {
            if (_oldDependencyType != ExternalAssetDependencyType.ONCHAIN) {
                // we only need to set the cid to an empty string if we are replacing an offchain asset
                // an onchain asset will already have an empty cid
                projects[_projectId].externalAssetDependencies[_index].cid = "";
            }
            projects[_projectId]
                .externalAssetDependencies[_index]
                .bytecodeAddress = _cidOrData.writeToBytecode();
            // we don't want to emit data, so we emit the cid as an empty string
            _cidOrData = "";
        } else {
            projects[_projectId]
                .externalAssetDependencies[_index]
                .cid = _cidOrData;
        }
        emit ExternalAssetDependencyUpdated(
            _projectId,
            _index,
            _cidOrData,
            _dependencyType,
            assetCount
        );
    }
    /**
     * @notice Removes external asset dependency for project `_projectId` at index `_index`.
     * Removal is done by swapping the element to be removed with the last element in the array, then deleting this last element.
     * Assets with indices higher than `_index` can have their indices adjusted as a result of this operation.
     * @param _projectId Project to be updated.
     * @param _index Asset index
     */
    function removeProjectExternalAssetDependency(
        uint256 _projectId,
        uint256 _index
    ) external {
        _onlyUnlockedProjectExternalAssetDependencies(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.removeProjectExternalAssetDependency.selector
        );
        uint24 assetCount = projects[_projectId].externalAssetDependencyCount;
        require(_index < assetCount, "Asset index out of range");
        uint24 lastElementIndex = assetCount - 1;
        // copy last element to index of element to be removed
        projects[_projectId].externalAssetDependencies[_index] = projects[
            _projectId
        ].externalAssetDependencies[lastElementIndex];
        delete projects[_projectId].externalAssetDependencies[lastElementIndex];
        projects[_projectId].externalAssetDependencyCount = lastElementIndex;
        emit ExternalAssetDependencyRemoved(_projectId, _index);
    }
    /**
     * @notice Adds external asset dependency for project `_projectId`.
     * @param _projectId Project to be updated.
     * @param _cidOrData Asset cid (Content identifier) or data string to be translated into bytecode.
     * @param _dependencyType Asset dependency type.
     *  0 - IPFS
     *  1 - ARWEAVE
     *  2 - ONCHAIN
     */
    function addProjectExternalAssetDependency(
        uint256 _projectId,
        string memory _cidOrData,
        ExternalAssetDependencyType _dependencyType
    ) external {
        _onlyUnlockedProjectExternalAssetDependencies(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.addProjectExternalAssetDependency.selector
        );
        uint24 assetCount = projects[_projectId].externalAssetDependencyCount;
        address _bytecodeAddress = address(0);
        // if the incoming dependency type is onchain, we need to write the data to bytecode
        if (_dependencyType == ExternalAssetDependencyType.ONCHAIN) {
            _bytecodeAddress = _cidOrData.writeToBytecode();
            // we don't want to emit data, so we emit the cid as an empty string
            _cidOrData = "";
        }
        ExternalAssetDependency memory asset = ExternalAssetDependency({
            cid: _cidOrData,
            dependencyType: _dependencyType,
            bytecodeAddress: _bytecodeAddress
        });
        projects[_projectId].externalAssetDependencies[assetCount] = asset;
        projects[_projectId].externalAssetDependencyCount = assetCount + 1;
        emit ExternalAssetDependencyUpdated(
            _projectId,
            assetCount,
            _cidOrData,
            _dependencyType,
            assetCount + 1
        );
    }
    /**
     * @notice Mints a token from project `_projectId` and sets the
     * token's owner to `_to`. Hash may or may not be assigned to the token
     * during the mint transaction, depending on the randomizer contract.
     * @param _to Address to be the minted token's owner.
     * @param _projectId Project ID to mint a token on.
     * @param _by Purchaser of minted token.
     * @return _tokenId The ID of the minted token.
     * @dev sender must be the allowed minterContract
     * @dev name of function is optimized for gas usage
     */
    function mint_Ecf(
        address _to,
        uint256 _projectId,
        address _by
    ) external returns (uint256 _tokenId) {
        // CHECKS
        require(msg.sender == minterContract, "Must mint from minter contract");
        Project storage project = projects[_projectId];
        // load invocations into memory
        uint24 invocationsBefore = project.invocations;
        uint24 invocationsAfter;
        unchecked {
            // invocationsBefore guaranteed <= maxInvocations <= 1_000_000,
            // 1_000_000 << max uint24, so no possible overflow
            invocationsAfter = invocationsBefore + 1;
        }
        uint24 maxInvocations = project.maxInvocations;
        require(
            invocationsBefore < maxInvocations,
            "Must not exceed max invocations"
        );
        require(
            project.active ||
                _by == projectIdToFinancials[_projectId].artistAddress,
            "Project must exist and be active"
        );
        require(
            !project.paused ||
                _by == projectIdToFinancials[_projectId].artistAddress,
            "Purchases are paused."
        );
        // EFFECTS
        // increment project's invocations
        project.invocations = invocationsAfter;
        uint256 thisTokenId;
        unchecked {
            // invocationsBefore is uint24 << max uint256. In production use,
            // _projectId * ONE_MILLION must be << max uint256, otherwise
            // tokenIdToProjectId function become invalid.
            // Therefore, no risk of overflow
            thisTokenId = (_projectId * ONE_MILLION) + invocationsBefore;
        }
        // mark project as completed if hit max invocations
        if (invocationsAfter == maxInvocations) {
            _completeProject(_projectId);
        }
        // INTERACTIONS
        _mint(_to, thisTokenId);
        // token hash is updated by the randomizer contract on V3
        randomizerContract.assignTokenHash(thisTokenId);
        // Do not need to also log `projectId` in event, as the `projectId` for
        // a given token can be derived from the `tokenId` with:
        //   projectId = tokenId / 1_000_000
        emit Mint(_to, thisTokenId);
        return thisTokenId;
    }
    /**
     * @notice Sets the hash seed for a given token ID `_tokenId`.
     * May only be called by the current randomizer contract.
     * May only be called for tokens that have not already been assigned a
     * non-zero hash.
     * @param _tokenId Token ID to set the hash for.
     * @param _hashSeed Hash seed to set for the token ID. Only last 12 bytes
     * will be used.
     * @dev gas-optimized function name because called during mint sequence
     * @dev if a separate event is required when the token hash is set, e.g.
     * for indexing purposes, it must be emitted by the randomizer. This is to
     * minimize gas when minting.
     */
    function setTokenHash_8PT(uint256 _tokenId, bytes32 _hashSeed) external {
        _onlyValidTokenId(_tokenId);
        OwnerAndHashSeed storage ownerAndHashSeed = _ownersAndHashSeeds[
            _tokenId
        ];
        require(
            msg.sender == address(randomizerContract),
            "Only randomizer may set"
        );
        require(
            ownerAndHashSeed.hashSeed == bytes12(0),
            "Token hash already set"
        );
        require(_hashSeed != bytes12(0), "No zero hash seed");
        ownerAndHashSeed.hashSeed = bytes12(_hashSeed);
    }
    /**
     * @notice Allows owner (AdminACL) to revoke ownership of the contract.
     * Note that the contract is intended to continue to function after the
     * owner renounces ownership, but no new projects will be able to be added.
     * Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the
     * owner/AdminACL contract. The same is true for any dependent contracts
     * that also integrate with the owner/AdminACL contract (e.g. potentially
     * minter suite contracts, registry contracts, etc.).
     * After renouncing ownership, artists will be in control of updates to
     * their payment addresses and splits (see modifier
     * onlyAdminACLOrRenouncedArtist`).
     * While there is no currently intended reason to call this method based on
     * typical Engine partner business practices, this method exists to allow
     * artists to continue to maintain the limited set of contract
     * functionality that exists post-project-lock in an environment in which
     * there is no longer an admin maintaining this smart contract.
     * @dev This function is intended to be called directly by the AdminACL,
     * not by an address allowed by the AdminACL contract.
     */
    function renounceOwnership() public override onlyOwner {
        // broadcast that new projects are no longer allowed (if not already)
        _forbidNewProjects();
        // renounce ownership viw Ownable
        Ownable.renounceOwnership();
    }
    /**
     * @notice Updates reference to Art Blocks Dependency Registry contract.
     * @param _artblocksDependencyRegistryAddress Address of new Dependency
     * Registry.
     */
    function updateArtblocksDependencyRegistryAddress(
        address _artblocksDependencyRegistryAddress
    ) external {
        _onlyAdminACL(this.updateArtblocksDependencyRegistryAddress.selector);
        _onlyNonZeroAddress(_artblocksDependencyRegistryAddress);
        artblocksDependencyRegistryAddress = _artblocksDependencyRegistryAddress;
        emit PlatformUpdated(FIELD_ARTBLOCKS_DEPENDENCY_REGISTRY_ADDRESS);
    }
    /**
     * @notice Updates sales addresses for the platform and render providers to
     * the input parameters.
     * @param _renderProviderPrimarySalesAddress Address of new primary sales
     * payment address.
     * @param _renderProviderSecondarySalesAddress Address of new secondary sales
     * payment address.
     * @param _platformProviderPrimarySalesAddress Address of new primary sales
     * payment address.
     * @param _platformProviderSecondarySalesAddress Address of new secondary sales
     * payment address.
     */
    function updateProviderSalesAddresses(
        address payable _renderProviderPrimarySalesAddress,
        address payable _renderProviderSecondarySalesAddress,
        address payable _platformProviderPrimarySalesAddress,
        address payable _platformProviderSecondarySalesAddress
    ) external {
        _onlyAdminACL(this.updateProviderSalesAddresses.selector);
        _onlyNonZeroAddress(_renderProviderPrimarySalesAddress);
        _onlyNonZeroAddress(_renderProviderSecondarySalesAddress);
        _onlyNonZeroAddress(_platformProviderPrimarySalesAddress);
        _onlyNonZeroAddress(_platformProviderSecondarySalesAddress);
        _updateProviderSalesAddresses(
            _renderProviderPrimarySalesAddress,
            _renderProviderSecondarySalesAddress,
            _platformProviderPrimarySalesAddress,
            _platformProviderSecondarySalesAddress
        );
    }
    /**
     * @notice Updates the render and platform provider primary sales revenue percentage to
     * the provided inputs.
     * @param renderProviderPrimarySalesPercentage_ New primary sales revenue % for the render provider
     * @param platformProviderPrimarySalesPercentage_ New primary sales revenue % for the platform provider
     * percentage.
     */
    function updateProviderPrimarySalesPercentages(
        uint256 renderProviderPrimarySalesPercentage_,
        uint256 platformProviderPrimarySalesPercentage_
    ) external {
        _onlyAdminACL(this.updateProviderPrimarySalesPercentages.selector);
        // Validate that the sum of the proposed %s, does not exceed 100%.
        require(
            (renderProviderPrimarySalesPercentage_ +
                platformProviderPrimarySalesPercentage_) <= ONE_HUNDRED,
            "Max sum of ONE_HUNDRED %"
        );
        // Casting to `uint8` here is safe due check above, which does not allow
        // overflow as of solidity version ^0.8.0.
        _renderProviderPrimarySalesPercentage = uint8(
            renderProviderPrimarySalesPercentage_
        );
        _platformProviderPrimarySalesPercentage = uint8(
            platformProviderPrimarySalesPercentage_
        );
        emit PlatformUpdated(FIELD_PROVIDER_PRIMARY_SALES_PERCENTAGES);
    }
    /**
     * @notice Updates render and platform provider secondary sales royalty Basis Points to
     * the provided inputs.
     * @param _renderProviderSecondarySalesBPS New secondary sales royalty Basis
     * points.
     * @param _platformProviderSecondarySalesBPS New secondary sales royalty Basis
     * points.
     * @dev Due to secondary royalties being ultimately enforced via social
     * consensus, no hard upper limit is imposed on the BPS value, other than
     * <= 100% royalty, which would not make mathematical sense. Realistically,
     * changing this value is expected to either never occur, or be a rare
     * occurrence.
     */
    function updateProviderSecondarySalesBPS(
        uint256 _renderProviderSecondarySalesBPS,
        uint256 _platformProviderSecondarySalesBPS
    ) external {
        _onlyAdminACL(this.updateProviderSecondarySalesBPS.selector);
        // Validate that the sum of the proposed provider BPS, does not exceed 10_000 BPS.
        require(
            (_renderProviderSecondarySalesBPS +
                _platformProviderSecondarySalesBPS) <=
                MAX_PROVIDER_SECONDARY_SALES_BPS,
            "Over max sum of BPS"
        );
        renderProviderSecondarySalesBPS = _renderProviderSecondarySalesBPS;
        platformProviderSecondarySalesBPS = _platformProviderSecondarySalesBPS;
        emit PlatformUpdated(FIELD_PROVIDER_SECONDARY_SALES_BPS);
    }
    /**
     * @notice Updates minter to `_address`.
     * @param _address Address of new minter.
     */
    function updateMinterContract(address _address) external {
        _onlyAdminACL(this.updateMinterContract.selector);
        _onlyNonZeroAddress(_address);
        minterContract = _address;
        emit MinterUpdated(_address);
    }
    /**
     * @notice Updates randomizer to `_randomizerAddress`.
     * @param _randomizerAddress Address of new randomizer.
     */
    function updateRandomizerAddress(address _randomizerAddress) external {
        _onlyAdminACL(this.updateRandomizerAddress.selector);
        _onlyNonZeroAddress(_randomizerAddress);
        _updateRandomizerAddress(_randomizerAddress);
    }
    /**
     * @notice Toggles project `_projectId` as active/inactive.
     * @param _projectId Project ID to be toggled.
     */
    function toggleProjectIsActive(uint256 _projectId) external {
        _onlyAdminACL(this.toggleProjectIsActive.selector);
        _onlyValidProjectId(_projectId);
        projects[_projectId].active = !projects[_projectId].active;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_ACTIVE);
    }
    /**
     * @notice Artist proposes updated set of artist address, additional payee
     * addresses, and percentage splits for project `_projectId`. Addresses and
     * percentages do not have to all be changed, but they must all be defined
     * as a complete set.
     * Note that if the artist is only proposing a change to the payee percentage
     * splits, without modifying the payee addresses, the proposal will be
     * automatically approved and the new splits will become active immediately.
     * Automatic approval will also be granted if the artist is only removing
     * additional payee addresses, without adding any new ones.
     * Also note that if `autoApproveArtistSplitProposals` is true, proposals
     * will always be auto-approved, regardless of what is being changed.
     * Also note that if the artist is proposing sending funds to the zero
     * address, this function will revert and the proposal will not be created.
     * @param _projectId Project ID.
     * @param _artistAddress Artist address that controls the project, and may
     * receive payments.
     * @param _additionalPayeePrimarySales Address that may receive a
     * percentage split of the artist's primary sales revenue.
     * @param _additionalPayeePrimarySalesPercentage Percent of artist's
     * portion of primary sale revenue that will be split to address
     * `_additionalPayeePrimarySales`.
     * @param _additionalPayeeSecondarySales Address that may receive a percentage
     * split of the secondary sales royalties.
     * @param _additionalPayeeSecondarySalesPercentage Percent of artist's portion
     * of secondary sale royalties that will be split to address
     * `_additionalPayeeSecondarySales`.
     * @dev `_artistAddress` must be a valid address (non-zero-address), but it
     * is intentionally allowable for `_additionalPayee{Primary,Secondaary}Sales`
     * and their associated percentages to be zero'd out by the controlling artist.
     */
    function proposeArtistPaymentAddressesAndSplits(
        uint256 _projectId,
        address payable _artistAddress,
        address payable _additionalPayeePrimarySales,
        uint256 _additionalPayeePrimarySalesPercentage,
        address payable _additionalPayeeSecondarySales,
        uint256 _additionalPayeeSecondarySalesPercentage
    ) external {
        _onlyValidProjectId(_projectId);
        _onlyArtist(_projectId);
        _onlyNonZeroAddress(_artistAddress);
        ProjectFinance storage projectFinance = projectIdToFinancials[
            _projectId
        ];
        // checks
        require(
            _additionalPayeePrimarySalesPercentage <= ONE_HUNDRED &&
                _additionalPayeeSecondarySalesPercentage <= ONE_HUNDRED,
            "Max of 100%"
        );
        require(
            _additionalPayeePrimarySalesPercentage == 0 ||
                _additionalPayeePrimarySales != address(0),
            "Primary payee is zero address"
        );
        require(
            _additionalPayeeSecondarySalesPercentage == 0 ||
                _additionalPayeeSecondarySales != address(0),
            "Secondary payee is zero address"
        );
        // effects
        // emit event for off-chain indexing
        // note: always emit a proposal event, even in the pathway of
        // automatic approval, to simplify indexing expectations
        emit ProposedArtistAddressesAndSplits(
            _projectId,
            _artistAddress,
            _additionalPayeePrimarySales,
            _additionalPayeePrimarySalesPercentage,
            _additionalPayeeSecondarySales,
            _additionalPayeeSecondarySalesPercentage
        );
        // automatically accept if no proposed addresses modifications, or if
        // the proposal only removes payee addresses, or if contract is set to
        // always auto-approve.
        // store proposal hash on-chain, only if not automatic accept
        bool automaticAccept = autoApproveArtistSplitProposals;
        if (!automaticAccept) {
            // block scope to avoid stack too deep error
            bool artistUnchanged = _artistAddress ==
                projectFinance.artistAddress;
            bool additionalPrimaryUnchangedOrRemoved = (_additionalPayeePrimarySales ==
                    projectFinance.additionalPayeePrimarySales) ||
                    (_additionalPayeePrimarySales == address(0));
            bool additionalSecondaryUnchangedOrRemoved = (_additionalPayeeSecondarySales ==
                    projectFinance.additionalPayeeSecondarySales) ||
                    (_additionalPayeeSecondarySales == address(0));
            automaticAccept =
                artistUnchanged &&
                additionalPrimaryUnchangedOrRemoved &&
                additionalSecondaryUnchangedOrRemoved;
        }
        if (automaticAccept) {
            // clear any previously proposed values
            proposedArtistAddressesAndSplitsHash[_projectId] = bytes32(0);
            // update storage
            // artist address can change during automatic accept if
            // autoApproveArtistSplitProposals is true
            projectFinance.artistAddress = _artistAddress;
            projectFinance
                .additionalPayeePrimarySales = _additionalPayeePrimarySales;
            // safe to cast as uint8 as max is 100%, max uint8 is 255
            projectFinance.additionalPayeePrimarySalesPercentage = uint8(
                _additionalPayeePrimarySalesPercentage
            );
            projectFinance
                .additionalPayeeSecondarySales = _additionalPayeeSecondarySales;
            // safe to cast as uint8 as max is 100%, max uint8 is 255
            projectFinance.additionalPayeeSecondarySalesPercentage = uint8(
                _additionalPayeeSecondarySalesPercentage
            );
            // emit event for off-chain indexing
            emit AcceptedArtistAddressesAndSplits(_projectId);
        } else {
            proposedArtistAddressesAndSplitsHash[_projectId] = keccak256(
                abi.encode(
                    _artistAddress,
                    _additionalPayeePrimarySales,
                    _additionalPayeePrimarySalesPercentage,
                    _additionalPayeeSecondarySales,
                    _additionalPayeeSecondarySalesPercentage
                )
            );
        }
    }
    /**
     * @notice Admin accepts a proposed set of updated artist address,
     * additional payee addresses, and percentage splits for project
     * `_projectId`. Addresses and percentages do not have to all be changed,
     * but they must all be defined as a complete set.
     * @param _projectId Project ID.
     * @param _artistAddress Artist address that controls the project, and may
     * receive payments.
     * @param _additionalPayeePrimarySales Address that may receive a
     * percentage split of the artist's primary sales revenue.
     * @param _additionalPayeePrimarySalesPercentage Percent of artist's
     * portion of primary sale revenue that will be split to address
     * `_additionalPayeePrimarySales`.
     * @param _additionalPayeeSecondarySales Address that may receive a percentage
     * split of the secondary sales royalties.
     * @param _additionalPayeeSecondarySalesPercentage Percent of artist's portion
     * of secondary sale royalties that will be split to address
     * `_additionalPayeeSecondarySales`.
     * @dev this must be called by the Admin ACL contract, and must only accept
     * the most recent proposed values for a given project (validated on-chain
     * by comparing the hash of the proposed and accepted values).
     * @dev `_artistAddress` must be a valid address (non-zero-address), but it
     * is intentionally allowable for `_additionalPayee{Primary,Secondaary}Sales`
     * and their associated percentages to be zero'd out by the controlling artist.
     */
    function adminAcceptArtistAddressesAndSplits(
        uint256 _projectId,
        address payable _artistAddress,
        address payable _additionalPayeePrimarySales,
        uint256 _additionalPayeePrimarySalesPercentage,
        address payable _additionalPayeeSecondarySales,
        uint256 _additionalPayeeSecondarySalesPercentage
    ) external {
        _onlyValidProjectId(_projectId);
        _onlyAdminACLOrRenouncedArtist(
            _projectId,
            this.adminAcceptArtistAddressesAndSplits.selector
        );
        _onlyNonZeroAddress(_artistAddress);
        // checks
        require(
            proposedArtistAddressesAndSplitsHash[_projectId] ==
                keccak256(
                    abi.encode(
                        _artistAddress,
                        _additionalPayeePrimarySales,
                        _additionalPayeePrimarySalesPercentage,
                        _additionalPayeeSecondarySales,
                        _additionalPayeeSecondarySalesPercentage
                    )
                ),
            "Must match artist proposal"
        );
        // effects
        ProjectFinance storage projectFinance = projectIdToFinancials[
            _projectId
        ];
        projectFinance.artistAddress = _artistAddress;
        projectFinance
            .additionalPayeePrimarySales = _additionalPayeePrimarySales;
        projectFinance.additionalPayeePrimarySalesPercentage = uint8(
            _additionalPayeePrimarySalesPercentage
        );
        projectFinance
            .additionalPayeeSecondarySales = _additionalPayeeSecondarySales;
        projectFinance.additionalPayeeSecondarySalesPercentage = uint8(
            _additionalPayeeSecondarySalesPercentage
        );
        // clear proposed values
        proposedArtistAddressesAndSplitsHash[_projectId] = bytes32(0);
        // emit event for off-chain indexing
        emit AcceptedArtistAddressesAndSplits(_projectId);
    }
    /**
     * @notice Updates artist of project `_projectId` to `_artistAddress`.
     * This is to only be used in the event that the artist address is
     * compromised or sanctioned.
     * @param _projectId Project ID.
     * @param _artistAddress New artist address.
     */
    function updateProjectArtistAddress(
        uint256 _projectId,
        address payable _artistAddress
    ) external {
        _onlyValidProjectId(_projectId);
        _onlyAdminACLOrRenouncedArtist(
            _projectId,
            this.updateProjectArtistAddress.selector
        );
        _onlyNonZeroAddress(_artistAddress);
        projectIdToFinancials[_projectId].artistAddress = _artistAddress;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_ARTIST_ADDRESS);
    }
    /**
     * @notice Toggles paused state of project `_projectId`.
     * @param _projectId Project ID to be toggled.
     */
    function toggleProjectIsPaused(uint256 _projectId) external {
        _onlyArtist(_projectId);
        projects[_projectId].paused = !projects[_projectId].paused;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_PAUSED);
    }
    /**
     * @notice Adds new project `_projectName` by `_artistAddress`.
     * @param _projectName Project name.
     * @param _artistAddress Artist's address.
     * @dev token price now stored on minter
     */
    function addProject(
        string memory _projectName,
        address payable _artistAddress
    ) external {
        _onlyAdminACL(this.addProject.selector);
        _onlyNonEmptyString(_projectName);
        _onlyNonZeroAddress(_artistAddress);
        require(!newProjectsForbidden, "New projects forbidden");
        uint256 projectId = _nextProjectId;
        projectIdToFinancials[projectId].artistAddress = _artistAddress;
        projects[projectId].name = _projectName;
        projects[projectId].paused = true;
        projects[projectId].maxInvocations = ONE_MILLION_UINT24;
        projects[projectId].projectBaseURI = defaultBaseURI;
        _nextProjectId = uint248(projectId) + 1;
        emit ProjectUpdated(projectId, FIELD_PROJECT_CREATED);
    }
    /**
     * @notice Forever forbids new projects from being added to this contract.
     */
    function forbidNewProjects() external {
        _onlyAdminACL(this.forbidNewProjects.selector);
        require(!newProjectsForbidden, "Already forbidden");
        _forbidNewProjects();
    }
    /**
     * @notice Updates name of project `_projectId` to be `_projectName`.
     * @param _projectId Project ID.
     * @param _projectName New project name.
     */
    function updateProjectName(
        uint256 _projectId,
        string memory _projectName
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(_projectId, this.updateProjectName.selector);
        _onlyNonEmptyString(_projectName);
        projects[_projectId].name = _projectName;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_NAME);
    }
    /**
     * @notice Updates artist name for project `_projectId` to be
     * `_projectArtistName`.
     * @param _projectId Project ID.
     * @param _projectArtistName New artist name.
     */
    function updateProjectArtistName(
        uint256 _projectId,
        string memory _projectArtistName
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.updateProjectArtistName.selector
        );
        _onlyNonEmptyString(_projectArtistName);
        projects[_projectId].artist = _projectArtistName;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_ARTIST_NAME);
    }
    /**
     * @notice Updates artist secondary market royalties for project
     * `_projectId` to be `_secondMarketRoyalty` percent.
     * This DOES NOT include the secondary market royalty percentages collected
     * by the issuing platform; it is only the total percentage of royalties
     * that will be split to artist and additionalSecondaryPayee.
     * @param _projectId Project ID.
     * @param _secondMarketRoyalty Percent of secondary sales revenue that will
     * be split to artist and additionalSecondaryPayee. This must be less than
     * or equal to ARTIST_MAX_SECONDARY_ROYALTY_PERCENTAGE percent.
     */
    function updateProjectSecondaryMarketRoyaltyPercentage(
        uint256 _projectId,
        uint256 _secondMarketRoyalty
    ) external {
        _onlyArtist(_projectId);
        require(
            _secondMarketRoyalty <= ARTIST_MAX_SECONDARY_ROYALTY_PERCENTAGE,
            "Over max percent"
        );
        projectIdToFinancials[_projectId]
            .secondaryMarketRoyaltyPercentage = uint8(_secondMarketRoyalty);
        emit ProjectUpdated(
            _projectId,
            FIELD_PROJECT_SECONDARY_MARKET_ROYALTY_PERCENTAGE
        );
    }
    /**
     * @notice Updates description of project `_projectId`.
     * Only artist may call when unlocked, only admin may call when locked.
     * Note: The BytecodeStorage library is used to store the description to
     * reduce initial upload cost, however, even minor edits will require an
     * expensive, entirely new bytecode storage contract to be deployed instead
     * of relatively cheap updates to already-warm storage slots. This results
     * in an increased gas cost for minor edits to the description after the
     * initial upload, but an overall decrease in gas cost for projects with
     * less than ~3-5 edits (depending on the length of the description).
     * @param _projectId Project ID.
     * @param _projectDescription New project description.
     */
    function updateProjectDescription(
        uint256 _projectId,
        string memory _projectDescription
    ) external {
        // checks
        require(
            _projectUnlocked(_projectId)
                ? msg.sender == projectIdToFinancials[_projectId].artistAddress
                : adminACLAllowed(
                    msg.sender,
                    address(this),
                    this.updateProjectDescription.selector
                ),
            "Only artist when unlocked, owner when locked"
        );
        // effects
        // store description in contract bytecode, replacing reference address from
        // the old storage description with the newly created one
        projects[_projectId].descriptionAddress = _projectDescription
            .writeToBytecode();
        emit ProjectUpdated(_projectId, FIELD_PROJECT_DESCRIPTION);
    }
    /**
     * @notice Updates website of project `_projectId` to be `_projectWebsite`.
     * @param _projectId Project ID.
     * @param _projectWebsite New project website.
     * @dev It is intentionally allowed for this to be set to the empty string.
     */
    function updateProjectWebsite(
        uint256 _projectId,
        string memory _projectWebsite
    ) external {
        _onlyArtist(_projectId);
        projects[_projectId].website = _projectWebsite;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_WEBSITE);
    }
    /**
     * @notice Updates license for project `_projectId`.
     * @param _projectId Project ID.
     * @param _projectLicense New project license.
     */
    function updateProjectLicense(
        uint256 _projectId,
        string memory _projectLicense
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(_projectId, this.updateProjectLicense.selector);
        _onlyNonEmptyString(_projectLicense);
        projects[_projectId].license = _projectLicense;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_LICENSE);
    }
    /**
     * @notice Updates maximum invocations for project `_projectId` to
     * `_maxInvocations`. Maximum invocations may only be decreased by the
     * artist, and must be greater than or equal to current invocations.
     * New projects are created with maximum invocations of 1 million by
     * default.
     * @param _projectId Project ID.
     * @param _maxInvocations New maximum invocations.
     */
    function updateProjectMaxInvocations(
        uint256 _projectId,
        uint24 _maxInvocations
    ) external {
        _onlyArtist(_projectId);
        // CHECKS
        Project storage project = projects[_projectId];
        uint256 _invocations = project.invocations;
        require(
            (_maxInvocations < project.maxInvocations),
            "Only maxInvocations decrease"
        );
        require(_maxInvocations >= _invocations, "Only gte invocations");
        // EFFECTS
        project.maxInvocations = _maxInvocations;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_MAX_INVOCATIONS);
        // register completed timestamp if action completed the project
        if (_maxInvocations == _invocations) {
            _completeProject(_projectId);
        }
    }
    /**
     * @notice Adds a script to project `_projectId`.
     * @param _projectId Project to be updated.
     * @param _script Script to be added. Required to be a non-empty string,
     * but no further validation is performed.
     */
    function addProjectScript(
        uint256 _projectId,
        string memory _script
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(_projectId, this.addProjectScript.selector);
        _onlyNonEmptyString(_script);
        Project storage project = projects[_projectId];
        // store script in contract bytecode
        project.scriptBytecodeAddresses[project.scriptCount] = _script
            .writeToBytecode();
        project.scriptCount = project.scriptCount + 1;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_SCRIPT);
    }
    /**
     * @notice Updates script for project `_projectId` at script ID `_scriptId`.
     * @param _projectId Project to be updated.
     * @param _scriptId Script ID to be updated.
     * @param _script The updated script value. Required to be a non-empty
     *                string, but no further validation is performed.
     */
    function updateProjectScript(
        uint256 _projectId,
        uint256 _scriptId,
        string memory _script
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(_projectId, this.updateProjectScript.selector);
        _onlyNonEmptyString(_script);
        Project storage project = projects[_projectId];
        require(_scriptId < project.scriptCount, "scriptId out of range");
        // store script in contract bytecode, replacing reference address from
        // the old storage contract with the newly created one
        project.scriptBytecodeAddresses[_scriptId] = _script.writeToBytecode();
        emit ProjectUpdated(_projectId, FIELD_PROJECT_SCRIPT);
    }
    /**
     * @notice Removes last script from project `_projectId`.
     * @param _projectId Project to be updated.
     */
    function removeProjectLastScript(uint256 _projectId) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.removeProjectLastScript.selector
        );
        Project storage project = projects[_projectId];
        require(project.scriptCount > 0, "No scripts to remove");
        // delete reference to old storage contract address
        delete project.scriptBytecodeAddresses[project.scriptCount - 1];
        unchecked {
            project.scriptCount = project.scriptCount - 1;
        }
        emit ProjectUpdated(_projectId, FIELD_PROJECT_SCRIPT);
    }
    /**
     * @notice Updates script type for project `_projectId`.
     * @param _projectId Project to be updated.
     * @param _scriptTypeAndVersion Script type and version e.g. "[email protected]",
     * as bytes32 encoded string.
     */
    function updateProjectScriptType(
        uint256 _projectId,
        bytes32 _scriptTypeAndVersion
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.updateProjectScriptType.selector
        );
        Project storage project = projects[_projectId];
        // require exactly one @ symbol in _scriptTypeAndVersion
        require(
            _scriptTypeAndVersion.containsExactCharacterQty(
                AT_CHARACTER_CODE,
                uint8(1)
            ),
            "must contain exactly one @"
        );
        project.scriptTypeAndVersion = _scriptTypeAndVersion;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_SCRIPT_TYPE);
    }
    /**
     * @notice Updates project's aspect ratio.
     * @param _projectId Project to be updated.
     * @param _aspectRatio Aspect ratio to be set. Intended to be string in the
     * format of a decimal, e.g. "1" for square, "1.77777778" for 16:9, etc.,
     * allowing for a maximum of 10 digits and one (optional) decimal separator.
     */
    function updateProjectAspectRatio(
        uint256 _projectId,
        string memory _aspectRatio
    ) external {
        _onlyUnlocked(_projectId);
        _onlyArtistOrAdminACL(
            _projectId,
            this.updateProjectAspectRatio.selector
        );
        _onlyNonEmptyString(_aspectRatio);
        // Perform more detailed input validation for aspect ratio.
        bytes memory aspectRatioBytes = bytes(_aspectRatio);
        uint256 bytesLength = aspectRatioBytes.length;
        require(bytesLength <= 11, "Aspect ratio format too long");
        bool hasSeenDecimalSeparator = false;
        bool hasSeenNumber = false;
        for (uint256 i; i < bytesLength; i++) {
            bytes1 character = aspectRatioBytes[i];
            // Allow as many #s as desired.
            if (character >= 0x30 && character <= 0x39) {
                // 9-0
                // We need to ensure there is at least 1 `9-0` occurrence.
                hasSeenNumber = true;
                continue;
            }
            if (character == 0x2E) {
                // .
                // Allow no more than 1 `.` occurrence.
                if (!hasSeenDecimalSeparator) {
                    hasSeenDecimalSeparator = true;
                    continue;
                }
            }
            revert("Improperly formatted aspect ratio");
        }
        require(hasSeenNumber, "Aspect ratio has no numbers");
        projects[_projectId].aspectRatio = _aspectRatio;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_ASPECT_RATIO);
    }
    /**
     * @notice Updates base URI for project `_projectId` to `_newBaseURI`.
     * This is the controlling base URI for all tokens in the project. The
     * contract-level defaultBaseURI is only used when initializing new
     * projects.
     * @param _projectId Project to be updated.
     * @param _newBaseURI New base URI.
     */
    function updateProjectBaseURI(
        uint256 _projectId,
        string memory _newBaseURI
    ) external {
        _onlyArtist(_projectId);
        _onlyNonEmptyString(_newBaseURI);
        projects[_projectId].projectBaseURI = _newBaseURI;
        emit ProjectUpdated(_projectId, FIELD_PROJECT_BASE_URI);
    }
    /**
     * @notice Updates default base URI to `_defaultBaseURI`. The
     * contract-level defaultBaseURI is only used when initializing new
     * projects. Token URIs are determined by their project's `projectBaseURI`.
     * @param _defaultBaseURI New default base URI.
     */
    function updateDefaultBaseURI(string memory _defaultBaseURI) external {
        _onlyAdminACL(this.updateDefaultBaseURI.selector);
        _onlyNonEmptyString(_defaultBaseURI);
        _updateDefaultBaseURI(_defaultBaseURI);
    }
    /**
     * @notice Next project ID to be created on this contract.
     * @return uint256 Next project ID.
     */
    function nextProjectId() external view returns (uint256) {
        return _nextProjectId;
    }
    /**
     * @notice Returns token hash for token ID `_tokenId`. Returns null if hash
     * has not been set.
     * @param _tokenId Token ID to be queried.
     * @return bytes32 Token hash.
     * @dev token hash is the keccak256 hash of the stored hash seed
     */
    function tokenIdToHash(uint256 _tokenId) external view returns (bytes32) {
        bytes12 _hashSeed = _ownersAndHashSeeds[_tokenId].hashSeed;
        if (_hashSeed == 0) {
            return 0;
        }
        return keccak256(abi.encode(_hashSeed));
    }
    /**
     * @notice Returns token hash **seed** for token ID `_tokenId`. Returns
     * null if hash seed has not been set. The hash seed id the bytes12 value
     * which is hashed to produce the token hash.
     * @param _tokenId Token ID to be queried.
     * @return bytes12 Token hash seed.
     * @dev token hash seed is keccak256 hashed to give the token hash
     */
    function tokenIdToHashSeed(
        uint256 _tokenId
    ) external view returns (bytes12) {
        return _ownersAndHashSeeds[_tokenId].hashSeed;
    }
    /**
     * @notice View function returning the render provider portion of
     * primary sales, in percent.
     * @return uint256 The render provider portion of primary sales,
     * in percent.
     */
    function renderProviderPrimarySalesPercentage()
        external
        view
        returns (uint256)
    {
        return _renderProviderPrimarySalesPercentage;
    }
    /**
     * @notice View function returning the platform provider portion of
     * primary sales, in percent.
     * @return uint256 The platform provider portion of primary sales,
     * in percent.
     */
    function platformProviderPrimarySalesPercentage()
        external
        view
        returns (uint256)
    {
        return _platformProviderPrimarySalesPercentage;
    }
    /**
     * @notice View function returning Artist's address for project
     * `_projectId`.
     * @param _projectId Project ID to be queried.
     * @return address Artist's address.
     */
    function projectIdToArtistAddress(
        uint256 _projectId
    ) external view returns (address payable) {
        return projectIdToFinancials[_projectId].artistAddress;
    }
    /**
     * @notice View function returning Artist's secondary market royalty
     * percentage for project `_projectId`.
     * This does not include render/platform providers portions of secondary
     * market royalties.
     * @param _projectId Project ID to be queried.
     * @return uint256 Artist's secondary market royalty percentage.
     */
    function projectIdToSecondaryMarketRoyaltyPercentage(
        uint256 _projectId
    ) external view returns (uint256) {
        return
            projectIdToFinancials[_projectId].secondaryMarketRoyaltyPercentage;
    }
    /**
     * @notice View function returning Artist's additional payee address for
     * primary sales, for project `_projectId`.
     * @param _projectId Project ID to be queried.
     * @return address Artist's additional payee address for primary sales.
     */
    function projectIdToAdditionalPayeePrimarySales(
        uint256 _projectId
    ) external view returns (address payable) {
        return projectIdToFinancials[_projectId].additionalPayeePrimarySales;
    }
    /**
     * @notice View function returning Artist's additional payee primary sales
     * percentage, for project `_projectId`.
     * @param _projectId Project ID to be queried.
     * @return uint256 Artist's additional payee primary sales percentage.
     */
    function projectIdToAdditionalPayeePrimarySalesPercentage(
        uint256 _projectId
    ) external view returns (uint256) {
        return
            projectIdToFinancials[_projectId]
                .additionalPayeePrimarySalesPercentage;
    }
    /**
     * @notice View function returning Artist's additional payee address for
     * secondary sales, for project `_projectId`.
     * @param _projectId Project ID to be queried.
     * @return address payable Artist's additional payee address for secondary
     * sales.
     */
    function projectIdToAdditionalPayeeSecondarySales(
        uint256 _projectId
    ) external view returns (address payable) {
        return projectIdToFinancials[_projectId].additionalPayeeSecondarySales;
    }
    /**
     * @notice View function returning Artist's additional payee secondary
     * sales percentage, for project `_projectId`.
     * @param _projectId Project ID to be queried.
     * @return uint256 Artist's additional payee secondary sales percentage.
     */
    function projectIdToAdditionalPayeeSecondarySalesPercentage(
        uint256 _projectId
    ) external view returns (uint256) {
        return
            projectIdToFinancials[_projectId]
                .additionalPayeeSecondarySalesPercentage;
    }
    /**
     * @notice Returns project details for project `_projectId`.
     * @param _projectId Project to be queried.
     * @return projectName Name of project
     * @return artist Artist of project
     * @return description Project description
     * @return website Project website
     * @return license Project license
     * @dev this function was named projectDetails prior to V3 core contract.
     */
    function projectDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory projectName,
            string memory artist,
            string memory description,
            string memory website,
            string memory license
        )
    {
        Project storage project = projects[_projectId];
        projectName = project.name;
        artist = project.artist;
        address projectDescriptionBytecodeAddress = project.descriptionAddress;
        if (projectDescriptionBytecodeAddress == address(0)) {
            description = "";
        } else {
            description = _readFromBytecode(projectDescriptionBytecodeAddress);
        }
        website = project.website;
        license = project.license;
    }
    /**
     * @notice Returns project state data for project `_projectId`.
     * @param _projectId Project to be queried
     * @return invocations Current number of invocations
     * @return maxInvocations Maximum allowed invocations
     * @return active Boolean representing if project is currently active
     * @return paused Boolean representing if project is paused
     * @return completedTimestamp zero if project not complete, otherwise
     * timestamp of project completion.
     * @return locked Boolean representing if project is locked
     * @dev price and currency info are located on minter contracts
     */
    function projectStateData(
        uint256 _projectId
    )
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        )
    {
        Project storage project = projects[_projectId];
        invocations = project.invocations;
        maxInvocations = project.maxInvocations;
        active = project.active;
        paused = project.paused;
        completedTimestamp = project.completedTimestamp;
        locked = !_projectUnlocked(_projectId);
    }
    /**
     * @notice Returns artist payment information for project `_projectId`.
     * @param _projectId Project to be queried
     * @return artistAddress Project Artist's address
     * @return additionalPayeePrimarySales Additional payee address for primary
     * sales
     * @return additionalPayeePrimarySalesPercentage Percentage of artist revenue
     * to be sent to the additional payee address for primary sales
     * @return additionalPayeeSecondarySales Additional payee address for secondary
     * sales royalties
     * @return additionalPayeeSecondarySalesPercentage Percentage of artist revenue
     * to be sent to the additional payee address for secondary sales royalties
     * @return secondaryMarketRoyaltyPercentage Royalty percentage to be sent to
     * combination of artist and additional payee. This does not include the
     * platform's percentage of secondary sales royalties, which is defined as
     * the sum of `renderProviderSecondarySalesBPS`
     * and `platformProviderSecondarySalesBPS`.
     */
    function projectArtistPaymentInfo(
        uint256 _projectId
    )
        external
        view
        returns (
            address artistAddress,
            address additionalPayeePrimarySales,
            uint256 additionalPayeePrimarySalesPercentage,
            address additionalPayeeSecondarySales,
            uint256 additionalPayeeSecondarySalesPercentage,
            uint256 secondaryMarketRoyaltyPercentage
        )
    {
        ProjectFinance storage projectFinance = projectIdToFinancials[
            _projectId
        ];
        artistAddress = projectFinance.artistAddress;
        additionalPayeePrimarySales = projectFinance
            .additionalPayeePrimarySales;
        additionalPayeePrimarySalesPercentage = projectFinance
            .additionalPayeePrimarySalesPercentage;
        additionalPayeeSecondarySales = projectFinance
            .additionalPayeeSecondarySales;
        additionalPayeeSecondarySalesPercentage = projectFinance
            .additionalPayeeSecondarySalesPercentage;
        secondaryMarketRoyaltyPercentage = projectFinance
            .secondaryMarketRoyaltyPercentage;
    }
    /**
     * @notice Returns script information for project `_projectId`.
     * @param _projectId Project to be queried.
     * @return scriptTypeAndVersion Project's script type and version
     * (e.g. "p5js(atSymbol)1.0.0")
     * @return aspectRatio Aspect ratio of project (e.g. "1" for square,
     * "1.77777778" for 16:9, etc.)
     * @return scriptCount Count of scripts for project
     */
    function projectScriptDetails(
        uint256 _projectId
    )
        external
        view
        override(IGenArt721CoreContractV3_Base, IDependencyRegistryCompatibleV0)
        returns (
            string memory scriptTypeAndVersion,
            string memory aspectRatio,
            uint256 scriptCount
        )
    {
        Project storage project = projects[_projectId];
        scriptTypeAndVersion = project.scriptTypeAndVersion.toString();
        aspectRatio = project.aspectRatio;
        scriptCount = project.scriptCount;
    }
    /**
     * @notice Returns address with bytecode containing project script for
     * project `_projectId` at script index `_index`.
     */
    function projectScriptBytecodeAddressByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (address) {
        return projects[_projectId].scriptBytecodeAddresses[_index];
    }
    /**
     * @notice Returns script for project `_projectId` at script index `_index`.
     * @param _projectId Project to be queried.
     * @param _index Index of script to be queried.
     */
    function projectScriptByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (string memory) {
        Project storage project = projects[_projectId];
        // If trying to access an out-of-index script, return the empty string.
        if (_index >= project.scriptCount) {
            return "";
        }
        return _readFromBytecode(project.scriptBytecodeAddresses[_index]);
    }
    /**
     * @notice Returns base URI for project `_projectId`.
     * @param _projectId Project to be queried.
     * @return projectBaseURI Base URI for project
     */
    function projectURIInfo(
        uint256 _projectId
    ) external view returns (string memory projectBaseURI) {
        projectBaseURI = projects[_projectId].projectBaseURI;
    }
    /**
     * @notice Backwards-compatible (pre-V3) function returning if `_minter` is
     * minterContract.
     * @param _minter Address to be queried.
     * @return bool Boolean representing if `_minter` is minterContract.
     */
    function isMintWhitelisted(address _minter) external view returns (bool) {
        return (minterContract == _minter);
    }
    /**
     * @notice Gets qty of randomizers in history of all randomizers used by
     * this core contract. If a randomizer is switched away from then back to,
     * it will show up in the history twice.
     * @return randomizerHistoryCount Count of randomizers in history
     */
    function numHistoricalRandomizers() external view returns (uint256) {
        return _historicalRandomizerAddresses.length;
    }
    /**
     * @notice Gets address of randomizer at index `_index` in history of all
     * randomizers used by this core contract. Index is zero-based.
     * @param _index Historical index of randomizer to be queried.
     * @return randomizerAddress Address of randomizer at index `_index`.
     * @dev If a randomizer is switched away from and then switched back to, it
     * will show up in the history twice.
     */
    function getHistoricalRandomizerAt(
        uint256 _index
    ) external view returns (address) {
        require(
            _index < _historicalRandomizerAddresses.length,
            "Index out of bounds"
        );
        return _historicalRandomizerAddresses[_index];
    }
    /**
     * @notice Gets royalty Basis Points (BPS) for token ID `_tokenId`.
     * This conforms to the IManifold interface designated in the Royalty
     * Registry's RoyaltyEngineV1.sol contract.
     * ref: https://github.com/manifoldxyz/royalty-registry-solidity
     * @param _tokenId Token ID to be queried.
     * @return recipients Array of royalty payment recipients
     * @return bps Array of Basis Points (BPS) allocated to each recipient,
     * aligned by index.
     * @dev reverts if invalid _tokenId
     * @dev only returns recipients that have a non-zero BPS allocation
     */
    function getRoyalties(
        uint256 _tokenId
    )
        external
        view
        returns (address payable[] memory recipients, uint256[] memory bps)
    {
        _onlyValidTokenId(_tokenId);
        // initialize arrays with maximum potential length
        recipients = new address payable[](4);
        bps = new uint256[](4);
        uint256 projectId = tokenIdToProjectId(_tokenId);
        ProjectFinance storage projectFinance = projectIdToFinancials[
            projectId
        ];
        // load values into memory
        uint256 royaltyPercentageForArtistAndAdditional = projectFinance
            .secondaryMarketRoyaltyPercentage;
        uint256 additionalPayeePercentage = projectFinance
            .additionalPayeeSecondarySalesPercentage;
        // calculate BPS = percentage * 100
        uint256 artistBPS = (ONE_HUNDRED - additionalPayeePercentage) *
            royaltyPercentageForArtistAndAdditional;
        uint256 additionalBPS = additionalPayeePercentage *
            royaltyPercentageForArtistAndAdditional;
        uint256 renderProviderBPS = renderProviderSecondarySalesBPS;
        uint256 platformProviderBPS = platformProviderSecondarySalesBPS;
        // populate arrays
        uint256 payeeCount;
        if (artistBPS > 0) {
            recipients[payeeCount] = projectFinance.artistAddress;
            bps[payeeCount++] = artistBPS;
        }
        if (additionalBPS > 0) {
            recipients[payeeCount] = projectFinance
                .additionalPayeeSecondarySales;
            bps[payeeCount++] = additionalBPS;
        }
        if (renderProviderBPS > 0) {
            recipients[payeeCount] = renderProviderSecondarySalesAddress;
            bps[payeeCount++] = renderProviderBPS;
        }
        if (platformProviderBPS > 0) {
            recipients[payeeCount] = platformProviderSecondarySalesAddress;
            bps[payeeCount++] = platformProviderBPS;
        }
        // trim arrays if necessary
        if (4 > payeeCount) {
            assembly {
                let decrease := sub(4, payeeCount)
                mstore(recipients, sub(mload(recipients), decrease))
                mstore(bps, sub(mload(bps), decrease))
            }
        }
        return (recipients, bps);
    }
    /**
     * @notice View function that returns appropriate revenue splits between
     * different render provider, platform provider, Artist, and Artist's
     * additional primary sales payee given a sale price of `_price` on
     * project `_projectId`.
     * This always returns four revenue amounts and four addresses, but if a
     * revenue is zero for either Artist or additional payee, the corresponding
     * address returned will also be null (for gas optimization).
     * Does not account for refund if user overpays for a token (minter should
     * handle a refund of the difference, if appropriate).
     * Some minters may have alternative methods of splitting payments, in
     * which case they should implement their own payment splitting logic.
     * @param _projectId Project ID to be queried.
     * @param _price Sale price of token.
     * @return renderProviderRevenue_ amount of revenue to be sent to the
     * render provider
     * @return renderProviderAddress_ address to send render provider revenue to
     * @return platformProviderRevenue_ amount of revenue to be sent to the
     * platform provider
     * @return platformProviderAddress_ address to send platform provider revenue to
     * @return artistRevenue_ amount of revenue to be sent to Artist
     * @return artistAddress_ address to send Artist revenue to. Will be null
     * if no revenue is due to artist (gas optimization).
     * @return additionalPayeePrimaryRevenue_ amount of revenue to be sent to
     * additional payee for primary sales
     * @return additionalPayeePrimaryAddress_ address to send Artist's
     * additional payee for primary sales revenue to. Will be null if no
     * revenue is due to additional payee for primary sales (gas optimization).
     * @dev this always returns four addresses and four revenues, but if the
     * revenue is zero, the corresponding address will be address(0). It is up
     * to the contract performing the revenue split to handle this
     * appropriately.
     */
    function getPrimaryRevenueSplits(
        uint256 _projectId,
        uint256 _price
    )
        external
        view
        returns (
            uint256 renderProviderRevenue_,
            address payable renderProviderAddress_,
            uint256 platformProviderRevenue_,
            address payable platformProviderAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        )
    {
        ProjectFinance storage projectFinance = projectIdToFinancials[
            _projectId
        ];
        // calculate revenues – this is a three-way split between the
        // render provider, the platform provider, and the artist, and
        // is safe to perform this given that in the case of loss of
        // precision Solidity will round down.
        uint256 projectFunds = _price;
        renderProviderRevenue_ =
            (_price * uint256(_renderProviderPrimarySalesPercentage)) /
            ONE_HUNDRED;
        // renderProviderRevenue_ percentage is always <=100, so guaranteed to never underflow
        projectFunds -= renderProviderRevenue_;
        platformProviderRevenue_ =
            (_price * uint256(_platformProviderPrimarySalesPercentage)) /
            ONE_HUNDRED;
        // platformProviderRevenue_ percentage is always <=100, so guaranteed to never underflow
        projectFunds -= platformProviderRevenue_;
        additionalPayeePrimaryRevenue_ =
            (projectFunds *
                projectFinance.additionalPayeePrimarySalesPercentage) /
            ONE_HUNDRED;
        // projectIdToAdditionalPayeePrimarySalesPercentage is always
        // <=100, so guaranteed to never underflow
        artistRevenue_ = projectFunds - additionalPayeePrimaryRevenue_;
        // set addresses from storage
        renderProviderAddress_ = renderProviderPrimarySalesAddress;
        platformProviderAddress_ = platformProviderPrimarySalesAddress;
        if (artistRevenue_ > 0) {
            artistAddress_ = projectFinance.artistAddress;
        }
        if (additionalPayeePrimaryRevenue_ > 0) {
            additionalPayeePrimaryAddress_ = projectFinance
                .additionalPayeePrimarySales;
        }
    }
    /**
     * @notice Returns external asset dependency for project `_projectId` at index `_index`.
     * If the dependencyType is ONCHAIN, the `data` field will contain the extrated bytecode data and `cid`
     * will be an empty string. Conversly, for any other dependencyType, the `data` field will be an empty string
     * and the `bytecodeAddress` will point to the zero address.
     */
    function projectExternalAssetDependencyByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (ExternalAssetDependencyWithData memory) {
        ExternalAssetDependency storage _dependency = projects[_projectId]
            .externalAssetDependencies[_index];
        address _bytecodeAddress = _dependency.bytecodeAddress;
        return
            ExternalAssetDependencyWithData({
                dependencyType: _dependency.dependencyType,
                cid: _dependency.cid,
                bytecodeAddress: _bytecodeAddress,
                data: (_dependency.dependencyType ==
                    ExternalAssetDependencyType.ONCHAIN)
                    ? _readFromBytecode(_bytecodeAddress)
                    : ""
            });
    }
    /**
     * @notice Returns external asset dependency count for project `_projectId` at index `_index`.
     */
    function projectExternalAssetDependencyCount(
        uint256 _projectId
    ) external view returns (uint256) {
        return uint256(projects[_projectId].externalAssetDependencyCount);
    }
    /**
     * @notice Backwards-compatible (pre-V3) getter returning contract admin
     * @return address Address of contract admin (same as owner)
     */
    function admin() external view returns (address) {
        return owner();
    }
    /**
     * @notice Gets the project ID for a given `_tokenId`.
     * @param _tokenId Token ID to be queried.
     * @return _projectId Project ID for given `_tokenId`.
     */
    function tokenIdToProjectId(
        uint256 _tokenId
    ) public pure returns (uint256 _projectId) {
        return _tokenId / ONE_MILLION;
    }
    /**
     * @notice Convenience function that returns whether `_sender` is allowed
     * to call function with selector `_selector` on contract `_contract`, as
     * determined by this contract's current Admin ACL contract. Expected use
     * cases include minter contracts checking if caller is allowed to call
     * admin-gated functions on minter contracts.
     * @param _sender Address of the sender calling function with selector
     * `_selector` on contract `_contract`.
     * @param _contract Address of the contract being called by `_sender`.
     * @param _selector Function selector of the function being called by
     * `_sender`.
     * @return bool Whether `_sender` is allowed to call function with selector
     * `_selector` on contract `_contract`.
     * @dev assumes the Admin ACL contract is the owner of this contract, which
     * is expected to always be true.
     * @dev adminACLContract is expected to either be null address (if owner
     * has renounced ownership), or conform to IAdminACLV0 interface. Check for
     * null address first to avoid revert when admin has renounced ownership.
     */
    function adminACLAllowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) public returns (bool) {
        return
            owner() != address(0) &&
            adminACLContract.allowed(_sender, _contract, _selector);
    }
    /**
     * @notice Returns contract owner. Set to deployer's address by default on
     * contract deployment.
     * @return address Address of contract owner.
     * @dev ref: https://docs.openzeppelin.com/contracts/4.x/api/access#Ownable
     * @dev owner role was called `admin` prior to V3 core contract
     */
    function owner()
        public
        view
        override(Ownable, IGenArt721CoreContractV3_Base)
        returns (address)
    {
        return Ownable.owner();
    }
    /**
     * @notice Gets token URI for token ID `_tokenId`.
     * @param _tokenId Token ID to be queried.
     * @return string URI of token ID `_tokenId`.
     * @dev token URIs are the concatenation of the project base URI and the
     * token ID.
     */
    function tokenURI(
        uint256 _tokenId
    ) public view override returns (string memory) {
        _onlyValidTokenId(_tokenId);
        string memory _projectBaseURI = projects[tokenIdToProjectId(_tokenId)]
            .projectBaseURI;
        return string.concat(_projectBaseURI, toString(_tokenId));
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override returns (bool) {
        return
            interfaceId == type(IManifold).interfaceId ||
            super.supportsInterface(interfaceId);
    }
    /**
     * @notice Forbids new projects from being created
     * @dev only performs operation and emits event if contract is not already
     * forbidding new projects.
     */
    function _forbidNewProjects() internal {
        if (!newProjectsForbidden) {
            newProjectsForbidden = true;
            emit PlatformUpdated(FIELD_NEW_PROJECTS_FORBIDDEN);
        }
    }
    /**
     * @notice Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     * @param newOwner New owner.
     * @dev owner role was called `admin` prior to V3 core contract.
     * @dev Overrides and wraps OpenZeppelin's _transferOwnership function to
     * also update adminACLContract for improved introspection.
     */
    function _transferOwnership(address newOwner) internal override {
        Ownable._transferOwnership(newOwner);
        adminACLContract = IAdminACLV0(newOwner);
    }
    /**
     * @notice Updates sales addresses for the platform and render providers to
     * the input parameters.
     * @param _renderProviderPrimarySalesAddress Address of new primary sales
     * payment address.
     * @param _renderProviderSecondarySalesAddress Address of new secondary sales
     * payment address.
     * @param _platformProviderPrimarySalesAddress Address of new primary sales
     * payment address.
     * @param _platformProviderSecondarySalesAddress Address of new secondary sales
     * payment address.
     * @dev Note that this method does not check that the input address is
     * not `address(0)`, as it is expected that callers of this method should
     * perform input validation where applicable.
     */
    function _updateProviderSalesAddresses(
        address _renderProviderPrimarySalesAddress,
        address _renderProviderSecondarySalesAddress,
        address _platformProviderPrimarySalesAddress,
        address _platformProviderSecondarySalesAddress
    ) internal {
        platformProviderPrimarySalesAddress = payable(
            _platformProviderPrimarySalesAddress
        );
        platformProviderSecondarySalesAddress = payable(
            _platformProviderSecondarySalesAddress
        );
        renderProviderPrimarySalesAddress = payable(
            _renderProviderPrimarySalesAddress
        );
        renderProviderSecondarySalesAddress = payable(
            _renderProviderSecondarySalesAddress
        );
        emit PlatformUpdated(FIELD_PROVIDER_SALES_ADDRESSES);
    }
    /**
     * @notice Updates randomizer address to `_randomizerAddress`.
     * @param _randomizerAddress New randomizer address.
     * @dev Note that this method does not check that the input address is
     * not `address(0)`, as it is expected that callers of this method should
     * perform input validation where applicable.
     */
    function _updateRandomizerAddress(address _randomizerAddress) internal {
        randomizerContract = IRandomizer_V3CoreBase(_randomizerAddress);
        // populate historical randomizer array
        _historicalRandomizerAddresses.push(_randomizerAddress);
        emit PlatformUpdated(FIELD_RANDOMIZER_ADDRESS);
    }
    /**
     * @notice Updates default base URI to `_defaultBaseURI`.
     * When new projects are added, their `projectBaseURI` is automatically
     * initialized to `_defaultBaseURI`.
     * @param _defaultBaseURI New default base URI.
     * @dev Note that this method does not check that the input string is not
     * the empty string, as it is expected that callers of this method should
     * perform input validation where applicable.
     */
    function _updateDefaultBaseURI(string memory _defaultBaseURI) internal {
        defaultBaseURI = _defaultBaseURI;
        emit PlatformUpdated(FIELD_DEFAULT_BASE_URI);
    }
    /**
     * @notice Internal function to complete a project.
     * @param _projectId Project ID to be completed.
     */
    function _completeProject(uint256 _projectId) internal {
        projects[_projectId].completedTimestamp = uint64(block.timestamp);
        emit ProjectUpdated(_projectId, FIELD_PROJECT_COMPLETED);
    }
    /**
     * @notice Internal function that returns whether a project is unlocked.
     * Projects automatically lock four weeks after they are completed.
     * Projects are considered completed when they have been invoked the
     * maximum number of times.
     * @param _projectId Project ID to be queried.
     * @return bool true if project is unlocked, false otherwise.
     * @dev This also enforces that the `_projectId` passed in is valid.
     */
    function _projectUnlocked(uint256 _projectId) internal view returns (bool) {
        _onlyValidProjectId(_projectId);
        uint256 projectCompletedTimestamp = projects[_projectId]
            .completedTimestamp;
        bool projectOpen = projectCompletedTimestamp == 0;
        return
            projectOpen ||
            (block.timestamp - projectCompletedTimestamp <
                FOUR_WEEKS_IN_SECONDS);
    }
    /**
     * Helper for calling `BytecodeStorageReader` external library reader method,
     * added for bytecode size reduction purposes.
     */
    function _readFromBytecode(
        address _address
    ) internal view returns (string memory) {
        return BytecodeStorageReader.readFromBytecode(_address);
    }
    // strings library from OpenZeppelin, modified for no constants
    bytes16 private _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private _ADDRESS_LENGTH = 20;
    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }
    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(
        uint256 value,
        uint256 length
    ) internal view returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "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 view returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IAdminACLV0 {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     * @param previousSuperAdmin The previous superAdmin address.
     * @param newSuperAdmin The new superAdmin address.
     * @param genArt721CoreAddressesToUpdate Array of genArt721Core
     * addresses to update to the new superAdmin, for indexing purposes only.
     */
    event SuperAdminTransferred(
        address indexed previousSuperAdmin,
        address indexed newSuperAdmin,
        address[] genArt721CoreAddressesToUpdate
    );
    /// Type of the Admin ACL contract, e.g. "AdminACLV0"
    function AdminACLType() external view returns (string memory);
    /// super admin address
    function superAdmin() external view returns (address);
    /**
     * @notice Calls transferOwnership on other contract from this contract.
     * This is useful for updating to a new AdminACL contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function transferOwnershipOn(
        address _contract,
        address _newAdminACL
    ) external;
    /**
     * @notice Calls renounceOwnership on other contract from this contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function renounceOwnershipOn(address _contract) external;
    /**
     * @notice Checks if sender `_sender` is allowed to call function with selector
     * `_selector` on contract `_contract`.
     */
    function allowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.19;
interface IDependencyRegistryCompatibleV0 {
    /// Dependency registry managed by Art Blocks
    function artblocksDependencyRegistryAddress()
        external
        view
        returns (address);
    /**
     * @notice Returns script information for project `_projectId`.
     * @param _projectId Project to be queried.
     * @return scriptTypeAndVersion Project's script type and version
     * (e.g. "p5js(atSymbol)1.0.0")
     * @return aspectRatio Aspect ratio of project (e.g. "1" for square,
     * "1.77777778" for 16:9, etc.)
     * @return scriptCount Count of scripts for project
     */
    function projectScriptDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory scriptTypeAndVersion,
            string memory aspectRatio,
            uint256 scriptCount
        );
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IGenArt721CoreContractExposesHashSeed {
    // function to read the hash-seed for a given tokenId
    function tokenIdToHashSeed(
        uint256 _tokenId
    ) external view returns (bytes12);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
/// use the Royalty Registry's IManifold interface for token royalties
import "./IManifold.sol";
/**
 * @title This interface is intended to house interface items that are common
 * across all GenArt721CoreContractV3 flagship and derivative implementations.
 * This interface extends the IManifold royalty interface in order to
 * add support the Royalty Registry by default.
 * @author Art Blocks Inc.
 */
interface IGenArt721CoreContractV3_Base is IManifold {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     */
    event Mint(address indexed _to, uint256 indexed _tokenId);
    /**
     * @notice currentMinter updated to `_currentMinter`.
     * @dev Implemented starting with V3 core
     */
    event MinterUpdated(address indexed _currentMinter);
    /**
     * @notice Platform updated on bytes32-encoded field `_field`.
     */
    event PlatformUpdated(bytes32 indexed _field);
    /**
     * @notice Project ID `_projectId` updated on bytes32-encoded field
     * `_update`.
     */
    event ProjectUpdated(uint256 indexed _projectId, bytes32 indexed _update);
    event ProposedArtistAddressesAndSplits(
        uint256 indexed _projectId,
        address _artistAddress,
        address _additionalPayeePrimarySales,
        uint256 _additionalPayeePrimarySalesPercentage,
        address _additionalPayeeSecondarySales,
        uint256 _additionalPayeeSecondarySalesPercentage
    );
    event AcceptedArtistAddressesAndSplits(uint256 indexed _projectId);
    // version and type of the core contract
    // coreVersion is a string of the form "0.x.y"
    function coreVersion() external view returns (string memory);
    // coreType is a string of the form "GenArt721CoreV3"
    function coreType() external view returns (string memory);
    // owner (pre-V3 was named admin) of contract
    // this is expected to be an Admin ACL contract for V3
    function owner() external view returns (address);
    // Admin ACL contract for V3, will be at the address owner()
    function adminACLContract() external returns (IAdminACLV0);
    // backwards-compatible (pre-V3) admin - equal to owner()
    function admin() external view returns (address);
    /**
     * Function determining if _sender is allowed to call function with
     * selector _selector on contract `_contract`. Intended to be used with
     * peripheral contracts such as minters, as well as internally by the
     * core contract itself.
     */
    function adminACLAllowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
    /// getter function of public variable
    function startingProjectId() external view returns (uint256);
    // getter function of public variable
    function nextProjectId() external view returns (uint256);
    // getter function of public mapping
    function tokenIdToProjectId(
        uint256 tokenId
    ) external view returns (uint256 projectId);
    // @dev this is not available in V0
    function isMintWhitelisted(address minter) external view returns (bool);
    function projectIdToArtistAddress(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySales(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySalesPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectIdToSecondaryMarketRoyaltyPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectURIInfo(
        uint256 _projectId
    ) external view returns (string memory projectBaseURI);
    // @dev new function in V3
    function projectStateData(
        uint256 _projectId
    )
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        );
    function projectDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory projectName,
            string memory artist,
            string memory description,
            string memory website,
            string memory license
        );
    function projectScriptDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory scriptTypeAndVersion,
            string memory aspectRatio,
            uint256 scriptCount
        );
    function projectScriptByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (string memory);
    function tokenIdToHash(uint256 _tokenId) external view returns (bytes32);
    // function to set a token's hash (must be guarded)
    function setTokenHash_8PT(uint256 _tokenId, bytes32 _hash) external;
    // @dev gas-optimized signature in V3 for `mint`
    function mint_Ecf(
        address _to,
        uint256 _projectId,
        address _by
    ) external returns (uint256 tokenId);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
import "./IGenArt721CoreContractV3_Engine.sol";
/**
 * @title This interface is intended to house interface items that are common
 * across all GenArt721CoreContractV3 Engine Flex and derivative implementations.
 * @author Art Blocks Inc.
 */
interface IGenArt721CoreContractV3_Engine_Flex is
    IGenArt721CoreContractV3_Engine
{
    /**
     * @notice When an external asset dependency is updated or added, this event is emitted.
     * @param _projectId The project ID of the project that was updated.
     * @param _index The index of the external asset dependency that was updated.
     * @param _cid The content ID of the external asset dependency. This is an empty string
     * if the dependency type is ONCHAIN.
     * @param _dependencyType The type of the external asset dependency.
     * @param _externalAssetDependencyCount The number of external asset dependencies.
     */
    event ExternalAssetDependencyUpdated(
        uint256 indexed _projectId,
        uint256 indexed _index,
        string _cid,
        ExternalAssetDependencyType _dependencyType,
        uint24 _externalAssetDependencyCount
    );
    /**
     * @notice The project id `_projectId` has had an external asset dependency removed at index `_index`.
     */
    event ExternalAssetDependencyRemoved(
        uint256 indexed _projectId,
        uint256 indexed _index
    );
    /**
     * @notice The preferred gateway for dependency type `_dependencyType` has been updated to `_gatewayAddress`.
     */
    event GatewayUpdated(
        ExternalAssetDependencyType indexed _dependencyType,
        string _gatewayAddress
    );
    /**
     * @notice The project id `_projectId` has had all external asset dependencies locked.
     * @dev This is a one-way operation. Once locked, the external asset dependencies cannot be updated.
     */
    event ProjectExternalAssetDependenciesLocked(uint256 indexed _projectId);
    /**
     * @notice An external asset dependency type. Can be one of IPFS, ARWEAVE, or ONCHAIN.
     */
    enum ExternalAssetDependencyType {
        IPFS,
        ARWEAVE,
        ONCHAIN
    }
    /**
     * @notice An external asset dependency. This is a struct that contains the CID of the dependency,
     * the type of the dependency, and the address of the bytecode for this dependency.
     */
    struct ExternalAssetDependency {
        string cid;
        ExternalAssetDependencyType dependencyType;
        address bytecodeAddress;
    }
    /**
     * @notice An external asset dependency with data. This is a convenience struct that contains the CID of the dependency,
     * the type of the dependency, the address of the bytecode for this dependency, and the data retrieved from this bytecode address.
     */
    struct ExternalAssetDependencyWithData {
        string cid;
        ExternalAssetDependencyType dependencyType;
        address bytecodeAddress;
        string data;
    }
    // preferredIPFSGateway is a url string
    function preferredIPFSGateway() external view returns (string memory);
    // preferredArweaveGateway is a url string
    function preferredArweaveGateway() external view returns (string memory);
    // updates the preferred IPFS gateway
    function updateIPFSGateway(string calldata _gateway) external;
    // updates the preferred Arweave gateway
    function updateArweaveGateway(string calldata _gateway) external;
    // locks the external asset dependencies for a project
    function lockProjectExternalAssetDependencies(uint256 _projectId) external;
    // updates the external asset dependency for a project at a given index
    function updateProjectExternalAssetDependency(
        uint256 _projectId,
        uint256 _index,
        string memory _cidOrData,
        ExternalAssetDependencyType _dependencyType
    ) external;
    // adds an external asset dependency for a project
    function addProjectExternalAssetDependency(
        uint256 _projectId,
        string memory _cidOrData,
        ExternalAssetDependencyType _dependencyType
    ) external;
    // removes an external asset dependency for a project at a given index
    function removeProjectExternalAssetDependency(
        uint256 _projectId,
        uint256 _index
    ) external;
    // getter function for project external asset dependencies
    function projectExternalAssetDependencyByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (ExternalAssetDependencyWithData memory);
    // getter function project external asset dependency count
    function projectExternalAssetDependencyCount(
        uint256 _projectId
    ) external view returns (uint256);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
import "./IGenArt721CoreContractV3_Base.sol";
interface IGenArt721CoreContractV3_Engine is IGenArt721CoreContractV3_Base {
    // @dev new function in V3
    function getPrimaryRevenueSplits(
        uint256 _projectId,
        uint256 _price
    )
        external
        view
        returns (
            uint256 renderProviderRevenue_,
            address payable renderProviderAddress_,
            uint256 platformProviderRevenue_,
            address payable platformProviderAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        );
    // @dev The render provider primary sales payment address
    function renderProviderPrimarySalesAddress()
        external
        view
        returns (address payable);
    // @dev The platform provider primary sales payment address
    function platformProviderPrimarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Percentage of primary sales allocated to the render provider
    function renderProviderPrimarySalesPercentage()
        external
        view
        returns (uint256);
    // @dev Percentage of primary sales allocated to the platform provider
    function platformProviderPrimarySalesPercentage()
        external
        view
        returns (uint256);
    // @dev The render provider secondary sales royalties payment address
    function renderProviderSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev The platform provider secondary sales royalties payment address
    function platformProviderSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Basis points of secondary sales allocated to the render provider
    function renderProviderSecondarySalesBPS() external view returns (uint256);
    // @dev Basis points of secondary sales allocated to the platform provider
    function platformProviderSecondarySalesBPS()
        external
        view
        returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @dev Royalty Registry interface, used to support the Royalty Registry.
/// @dev Source: https://github.com/manifoldxyz/royalty-registry-solidity/blob/main/contracts/specs/IManifold.sol
/// @author: manifold.xyz
/**
 * @dev Royalty interface for creator core classes
 */
interface IManifold {
    /**
     * @dev Get royalites of a token.  Returns list of receivers and basisPoints
     *
     *  bytes4(keccak256('getRoyalties(uint256)')) == 0xbb3bafd6
     *
     *  => 0xbb3bafd6 = 0xbb3bafd6
     */
    function getRoyalties(
        uint256 tokenId
    ) external view returns (address payable[] memory, uint256[] memory);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Creatd By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IRandomizer_V3CoreBase {
    /**
     * @notice This function is intended to be called by a core contract, and
     * the core contract can be assured that the randomizer will call back to
     * the calling contract to set the token hash seed for `_tokenId` via
     * `setTokenHash_8PT`.
     * @dev This function may revert if hash seed generation is improperly
     * configured (for example, if in polyptych mode, but no hash seed has been
     * previously configured).
     * @dev This function is not specifically gated to any specific caller, but
     * will only call back to the calling contract, `msg.sender`, to set the
     * specified token's hash seed.
     * A third party contract calling this function will not be able to set the
     * token hash seed on a different core contract.
     * @param _tokenId The token ID must be assigned a hash.
     */
    function assignTokenHash(uint256 _tokenId) external;
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
/**
 * @title Art Blocks Script Storage Library
 * @notice Utilize contract bytecode as persistent storage for large chunks of script string data.
 *         This library is intended to have an external deployed copy that is released in the future,
 *         and, as such, has been designed to support both updated V1 (versioned, with purging removed)
 *         reads as well as backwards-compatible reads for both a) the unversioned "V0" storage contracts
 *         which were deployed by the original version of this libary and b) contracts that were deployed
 *         using one of the SSTORE2 implementations referenced below.
 *         For these pre-V1 storage contracts (which themselves did not have any explicit versioning semantics)
 *         backwards-compatible reads are optimistic, and only expected to work for contracts actually
 *         deployed by the original version of this library – and may fail ungracefully if attempted to be
 *         used to read from other contracts.
 *         This library is split into two components, intended to be updated in tandem, and thus included
 *         here in the same source file. One component is an internal library that is intended to be embedded
 *         directly into other contracts and provides all _write_ functionality. The other is a public library
 *         that is intended to be deployed as a standalone contract and provides all _read_ functionality.
 *
 * @author Art Blocks Inc.
 * @author Modified from 0xSequence (https://github.com/0xsequence/sstore2/blob/master/contracts/SSTORE2.sol)
 * @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SSTORE2.sol)
 *
 * @dev Compared to the above two rerferenced libraries, this contracts-as-storage implementation makes a few
 *      notably different design decisions:
 *      - uses the `string` data type for input/output on reads, rather than speaking in bytes directly
 *      - stores the "writer" address (library user) in the deployed contract bytes, which is useful for
 *        on-chain introspection and provenance purposes
 *      - stores a very simple versioning string in the deployed contract bytes, which captures the version
 *        of the library that was used to deploy the storage contract and useful for supporting future
 *        compatibility management as this library evolves (e.g. in response to EOF v1 migration plans)
 *      Also, given that much of this library is written in assembly, this library makes use of a slightly
 *      different convention (when compared to the rest of the Art Blocks smart contract repo) around
 *      pre-defining return values in some cases in order to simplify need to directly memory manage these
 *      return values.
 */
/**
 * @title Art Blocks Script Storage Library (Public, Reads)
 * @author Art Blocks Inc.
 * @notice The public library for reading from storage contracts. This library is intended to be deployed as a
 *         standalone contract, and provides all _read_ functionality.
 */
library BytecodeStorageReader {
    // Define the set of known valid version strings that may be stored in the deployed storage contract bytecode
    // note: These are all intentionally exactly 32-bytes and are null-terminated. Null-termination is used due
    //       to this being the standard expected formatting in common web3 tooling such as ethers.js. Please see
    //       the following for additional context: https://docs.ethers.org/v5/api/utils/strings/#Bytes32String
    // Used for storage contracts that were deployed by an unknown source
    bytes32 public constant UNKNOWN_VERSION_STRING =
        "UNKNOWN_VERSION_STRING_________ ";
    // Pre-dates versioning string, so this doesn't actually exist in any deployed contracts,
    // but is useful for backwards-compatible semantics with original version of this library
    bytes32 public constant V0_VERSION_STRING =
        "BytecodeStorage_V0.0.0_________ ";
    // The first versioned storage contract, deployed by an updated version of this library
    bytes32 public constant V1_VERSION_STRING =
        "BytecodeStorage_V1.0.0_________ ";
    // The current version of this library.
    bytes32 public constant CURRENT_VERSION = V1_VERSION_STRING;
    //---------------------------------------------------------------------------------------------------------------//
    // Starting Index | Size | Ending Index | Description                                                            //
    //---------------------------------------------------------------------------------------------------------------//
    // 0              | N/A  | 0            |                                                                        //
    // 0              | 1    | 1            | single byte opcode for making the storage contract non-executable      //
    // 1              | 32   | 33           | the 32 byte slot used for storing a basic versioning string            //
    // 33             | 32   | 65           | the 32 bytes for storing the deploying contract's (0-padded) address   //
    //---------------------------------------------------------------------------------------------------------------//
    // Define the offset for where the "meta bytes" end, and the "data bytes" begin. Note that this is a manually
    // calculated value, and must be updated if the above table is changed. It is expected that tests will fail
    // loudly if these values are not updated in-step with eachother.
    uint256 private constant VERSION_OFFSET = 1;
    uint256 private constant ADDRESS_OFFSET = 33;
    uint256 private constant DATA_OFFSET = 65;
    // Define the set of known *historic* offset values for where the "meta bytes" end, and the "data bytes" begin.
    // SSTORE2 deployed storage contracts take the general format of:
    // concat(0x00, data)
    // note: this is true for both variants of the SSTORE2 library
    uint256 private constant SSTORE2_DATA_OFFSET = 1;
    // V0 deployed storage contracts take the general format of:
    // concat(gated-cleanup-logic, deployer-address, data)
    uint256 private constant V0_ADDRESS_OFFSET = 72;
    uint256 private constant V0_DATA_OFFSET = 104;
    // V1 deployed storage contracts take the general format of:
    // concat(invalid opcode, version, deployer-address, data)
    uint256 private constant V1_ADDRESS_OFFSET = ADDRESS_OFFSET;
    uint256 private constant V1_DATA_OFFSET = DATA_OFFSET;
    /*//////////////////////////////////////////////////////////////
                               READ LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Read a string from contract bytecode
     * @param _address address of deployed contract with bytecode stored in the V0 or V1 format
     * @return data string read from contract bytecode
     * @dev This function performs input validation that the contract to read is in an expected format
     */
    function readFromBytecode(
        address _address
    ) public view returns (string memory data) {
        uint256 dataOffset = _bytecodeDataOffsetAt(_address);
        return string(readBytesFromBytecode(_address, dataOffset));
    }
    /**
     * @notice Read the bytes from contract bytecode that was written to the EVM using SSTORE2
     * @param _address address of deployed contract with bytecode stored in the SSTORE2 format
     * @return data bytes read from contract bytecode
     * @dev This function performs no input validation on the provided contract,
     *      other than that there is content to read (but not that its a "storage contract")
     */
    function readBytesFromSSTORE2Bytecode(
        address _address
    ) public view returns (bytes memory data) {
        return readBytesFromBytecode(_address, SSTORE2_DATA_OFFSET);
    }
    /**
     * @notice Read the bytes from contract bytecode, with an explicitly provided starting offset
     * @param _address address of deployed contract with bytecode stored in the V0 or V1 format
     * @param _offset offset to read from in contract bytecode, explicitly provided (not calculated)
     * @return data bytes read from contract bytecode
     * @dev This function performs no input validation on the provided contract,
     *      other than that there is content to read (but not that its a "storage contract")
     */
    function readBytesFromBytecode(
        address _address,
        uint256 _offset
    ) public view returns (bytes memory data) {
        // get the size of the bytecode
        uint256 bytecodeSize = _bytecodeSizeAt(_address);
        // handle case where address contains code < _offset
        if (bytecodeSize < _offset) {
            revert("ContractAsStorage: Read Error");
        }
        // handle case where address contains code >= dataOffset
        // decrement by dataOffset to account for header info
        uint256 size;
        unchecked {
            size = bytecodeSize - _offset;
        }
        assembly {
            // allocate free memory
            data := mload(0x40)
            // update free memory pointer
            // use and(x, not(0x1f) as cheaper equivalent to sub(x, mod(x, 0x20)).
            // adding 0x1f to size + logic above ensures the free memory pointer
            // remains word-aligned, following the Solidity convention.
            mstore(0x40, add(data, and(add(add(size, 0x20), 0x1f), not(0x1f))))
            // store length of data in first 32 bytes
            mstore(data, size)
            // copy code to memory, excluding the deployer-address
            extcodecopy(_address, add(data, 0x20), _offset, size)
        }
    }
    /**
     * @notice Get address for deployer for given contract bytecode
     * @param _address address of deployed contract with bytecode stored in the V0 or V1 format
     * @return writerAddress address read from contract bytecode
     */
    function getWriterAddressForBytecode(
        address _address
    ) public view returns (address) {
        // get the size of the data
        uint256 bytecodeSize = _bytecodeSizeAt(_address);
        // the dataOffset for the bytecode
        uint256 addressOffset = _bytecodeAddressOffsetAt(_address);
        // handle case where address contains code < addressOffset + 32 (address takes a whole slot)
        if (bytecodeSize < (addressOffset + 32)) {
            revert("ContractAsStorage: Read Error");
        }
        assembly {
            // allocate free memory
            let writerAddress := mload(0x40)
            // shift free memory pointer by one slot
            mstore(0x40, add(mload(0x40), 0x20))
            // copy the 32-byte address of the data contract writer to memory
            // note: this relies on the assumption noted at the top-level of
            //       this file that the storage layout for the deployed
            //       contracts-as-storage contract looks like::
            //       | invalid opcode | version-string (unless v0) | deployer-address (padded) | data |
            extcodecopy(
                _address,
                writerAddress,
                addressOffset,
                0x20 // full 32-bytes, as address is expected to be zero-padded
            )
            return(
                writerAddress,
                0x20 // return size is entire slot, as it is zero-padded
            )
        }
    }
    /**
     * @notice Get version for given contract bytecode
     * @param _address address of deployed contract with bytecode stored in the V0 or V1 format
     * @return version version read from contract bytecode
     */
    function getLibraryVersionForBytecode(
        address _address
    ) public view returns (bytes32) {
        return _bytecodeVersionAt(_address);
    }
    /*//////////////////////////////////////////////////////////////
                          INTERNAL HELPER LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Returns the size of the bytecode at address `_address`
     * @param _address address that may or may not contain bytecode
     * @return size size of the bytecode code at `_address`
     */
    function _bytecodeSizeAt(
        address _address
    ) private view returns (uint256 size) {
        assembly {
            size := extcodesize(_address)
        }
        if (size == 0) {
            revert("ContractAsStorage: Read Error");
        }
    }
    /**
     * @notice Returns the offset of the data in the bytecode at address `_address`
     * @param _address address that may or may not contain bytecode
     * @return dataOffset offset of data in bytecode if a known version, otherwise 0
     */
    function _bytecodeDataOffsetAt(
        address _address
    ) private view returns (uint256 dataOffset) {
        bytes32 version = _bytecodeVersionAt(_address);
        if (version == V1_VERSION_STRING) {
            dataOffset = V1_DATA_OFFSET;
        } else if (version == V0_VERSION_STRING) {
            dataOffset = V0_DATA_OFFSET;
        } else {
            // unknown version, revert
            revert("ContractAsStorage: Unsupported Version");
        }
    }
    /**
     * @notice Returns the offset of the address in the bytecode at address `_address`
     * @param _address address that may or may not contain bytecode
     * @return addressOffset offset of address in bytecode if a known version, otherwise 0
     */
    function _bytecodeAddressOffsetAt(
        address _address
    ) private view returns (uint256 addressOffset) {
        bytes32 version = _bytecodeVersionAt(_address);
        if (version == V1_VERSION_STRING) {
            addressOffset = V1_ADDRESS_OFFSET;
        } else if (version == V0_VERSION_STRING) {
            addressOffset = V0_ADDRESS_OFFSET;
        } else {
            // unknown version, revert
            revert("ContractAsStorage: Unsupported Version");
        }
    }
    /**
     * @notice Get version string for given contract bytecode
     * @param _address address of deployed contract with bytecode stored in the V0 or V1 format
     * @return version version string read from contract bytecode
     */
    function _bytecodeVersionAt(
        address _address
    ) private view returns (bytes32 version) {
        // get the size of the data
        uint256 bytecodeSize = _bytecodeSizeAt(_address);
        // handle case where address contains code < minimum expected version string size,
        // by returning early with the unknown version string
        if (bytecodeSize < (VERSION_OFFSET + 32)) {
            return UNKNOWN_VERSION_STRING;
        }
        assembly {
            // allocate free memory
            let versionString := mload(0x40)
            // shift free memory pointer by one slot
            mstore(0x40, add(mload(0x40), 0x20))
            // copy the 32-byte version string of the bytecode library to memory
            // note: this relies on the assumption noted at the top-level of
            //       this file that the storage layout for the deployed
            //       contracts-as-storage contract looks like:
            //       | invalid opcode | version-string (unless v0) | deployer-address (padded) | data |
            extcodecopy(
                _address,
                versionString,
                VERSION_OFFSET,
                0x20 // 32-byte version string
            )
            // note: must check against literal strings, as Yul does not allow for
            //       dynamic strings in switch statements.
            switch mload(versionString)
            case "BytecodeStorage_V1.0.0_________ " {
                version := V1_VERSION_STRING
            }
            case 0x2060486000396000513314601057fe5b60013614601957fe5b6000357fff0000 {
                // the v0 variant of this library pre-dates formal versioning w/ version strings,
                // so we check the first 32 bytes of the execution bytecode itself which
                // is static and known across all storage contracts deployed with the first version
                // of this library.
                version := V0_VERSION_STRING
            }
            default {
                version := UNKNOWN_VERSION_STRING
            }
        }
    }
}
/**
 * @title Art Blocks Script Storage Library (Internal, Writes)
 * @author Art Blocks Inc.
 * @notice The internal library for writing to storage contracts. This library is intended to be deployed
 *         within library client contracts that use this library to perform _write_ operations on storage.
 */
library BytecodeStorageWriter {
    /*//////////////////////////////////////////////////////////////
                           WRITE LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Write a string to contract bytecode
     * @param _data string to be written to contract. No input validation is performed on this parameter.
     * @param address_ address of deployed contract with bytecode stored in the V0 or V1 format
     */
    function writeToBytecode(
        string memory _data
    ) internal returns (address address_) {
        // prefix bytecode with
        bytes memory creationCode = abi.encodePacked(
            //---------------------------------------------------------------------------------------------------------------//
            // Opcode  | Opcode + Arguments  | Description  | Stack View                                                     //
            //---------------------------------------------------------------------------------------------------------------//
            // a.) creation code returns all code in the contract except for the first 11 (0B in hex) bytes, as these 11
            //     bytes are the creation code itself which we do not want to store in the deployed storage contract result
            //---------------------------------------------------------------------------------------------------------------//
            // 0x60    |  0x60_0B            | PUSH1 11     | codeOffset                                                     //
            // 0x59    |  0x59               | MSIZE        | 0 codeOffset                                                   //
            // 0x81    |  0x81               | DUP2         | codeOffset 0 codeOffset                                        //
            // 0x38    |  0x38               | CODESIZE     | codeSize codeOffset 0 codeOffset                               //
            // 0x03    |  0x03               | SUB          | (codeSize - codeOffset) 0 codeOffset                           //
            // 0x80    |  0x80               | DUP          | (codeSize - codeOffset) (codeSize - codeOffset) 0 codeOffset   //
            // 0x92    |  0x92               | SWAP3        | codeOffset (codeSize - codeOffset) 0 (codeSize - codeOffset)   //
            // 0x59    |  0x59               | MSIZE        | 0 codeOffset (codeSize - codeOffset) 0 (codeSize - codeOffset) //
            // 0x39    |  0x39               | CODECOPY     | 0 (codeSize - codeOffset)                                      //
            // 0xF3    |  0xF3               | RETURN       |                                                                //
            //---------------------------------------------------------------------------------------------------------------//
            // (11 bytes)
            hex"60_0B_59_81_38_03_80_92_59_39_F3",
            //---------------------------------------------------------------------------------------------------------------//
            // b.) ensure that the deployed storage contract is non-executeable (first opcode is the `invalid` opcode)
            //---------------------------------------------------------------------------------------------------------------//
            //---------------------------------------------------------------------------------------------------------------//
            // 0xFE    |  0xFE               | INVALID      |                                                                //
            //---------------------------------------------------------------------------------------------------------------//
            // (1 byte)
            hex"FE",
            //---------------------------------------------------------------------------------------------------------------//
            // c.) store the version string, which is already represented as a 32-byte value
            //---------------------------------------------------------------------------------------------------------------//
            // (32 bytes)
            BytecodeStorageReader.CURRENT_VERSION,
            //---------------------------------------------------------------------------------------------------------------//
            // d.) store the deploying-contract's address with 0-padding to fit a 20-byte address into a 32-byte slot
            //---------------------------------------------------------------------------------------------------------------//
            // (12 bytes)
            hex"00_00_00_00_00_00_00_00_00_00_00_00",
            // (20 bytes)
            address(this),
            // uploaded data (stored as bytecode) comes last
            _data
        );
        assembly {
            // deploy a new contract with the generated creation code.
            // start 32 bytes into creationCode to avoid copying the byte length.
            address_ := create(0, add(creationCode, 0x20), mload(creationCode))
        }
        // address must be non-zero if contract was deployed successfully
        require(address_ != address(0), "ContractAsStorage: Write Error");
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
// Inspired by: https://ethereum.stackexchange.com/a/123950/103422
pragma solidity ^0.8.0;
/**
 * @dev Operations on bytes32 data type, dealing with conversion to string.
 */
library Bytes32Strings {
    /**
     * @dev Intended to convert a `bytes32`-encoded string literal to `string`.
     * Trims zero padding to arrive at original string literal.
     */
    function toString(
        bytes32 source
    ) internal pure returns (string memory result) {
        uint8 length = 0;
        while (source[length] != 0 && length < 32) {
            length++;
        }
        assembly {
            // free memory pointer
            result := mload(0x40)
            // update free memory pointer to new "memory end"
            // (offset is 64-bytes: 32 for length, 32 for data)
            mstore(0x40, add(result, 0x40))
            // store length in first 32-byte memory slot
            mstore(result, length)
            // write actual data in second 32-byte memory slot
            mstore(add(result, 0x20), source)
        }
    }
    /**
     * @dev Intended to check if a `bytes32`-encoded string contains a given
     * character with UTF-8 character code `utf8CharCode exactly `targetQty`
     * times. Does not support searching for multi-byte characters, only
     * characters with UTF-8 character codes < 0x80.
     */
    function containsExactCharacterQty(
        bytes32 source,
        uint8 utf8CharCode,
        uint8 targetQty
    ) internal pure returns (bool) {
        uint8 _occurrences = 0;
        uint8 i;
        for (i = 0; i < 32; ) {
            uint8 _charCode = uint8(source[i]);
            // if not a null byte, or a multi-byte UTF-8 character, check match
            if (_charCode != 0 && _charCode < 0x80) {
                if (_charCode == utf8CharCode) {
                    unchecked {
                        // no risk of overflow since max 32 iterations < max uin8=255
                        ++_occurrences;
                    }
                }
            }
            unchecked {
                // no risk of overflow since max 32 iterations < max uin8=255
                ++i;
            }
        }
        return _occurrences == targetQty;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "@openzeppelin-4.7/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin-4.7/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin-4.7/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import "@openzeppelin-4.7/contracts/utils/Address.sol";
import "@openzeppelin-4.7/contracts/utils/Context.sol";
import "@openzeppelin-4.7/contracts/utils/Strings.sol";
import "@openzeppelin-4.7/contracts/utils/introspection/ERC165.sol";
/**
 * @dev Forked version of the OpenZeppelin v4.7.1 ERC721 contract. Utilizes a
 * struct to pack owner and hash seed into a single storage slot.
 * ---------------------
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721_PackedHashSeed is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;
    // Token name
    string private _name;
    // Token symbol
    string private _symbol;
    /// struct to pack a token owner and hash seed into same storage slot
    struct OwnerAndHashSeed {
        // 20 bytes for address of token's owner
        address owner;
        // remaining 12 bytes allocated to token hash seed
        bytes12 hashSeed;
    }
    /// mapping of token ID to OwnerAndHashSeed
    /// @dev visibility internal so inheriting contracts can access
    mapping(uint256 => OwnerAndHashSeed) internal _ownersAndHashSeeds;
    // Mapping owner address to token count
    mapping(address => uint256) private _balances;
    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;
    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;
    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }
    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(
        address owner
    ) public view virtual override returns (uint256) {
        require(
            owner != address(0),
            "ERC721: address zero is not a valid owner"
        );
        return _balances[owner];
    }
    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(
        uint256 tokenId
    ) public view virtual override returns (address) {
        address owner = _ownersAndHashSeeds[tokenId].owner;
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }
    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(
        uint256 tokenId
    ) public view virtual override returns (string memory) {
        _requireMinted(tokenId);
        string memory baseURI = _baseURI();
        return
            bytes(baseURI).length > 0
                ? string(abi.encodePacked(baseURI, tokenId.toString()))
                : "";
    }
    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }
    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721_PackedHashSeed.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");
        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner nor approved for all"
        );
        _approve(to, tokenId);
    }
    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(
        uint256 tokenId
    ) public view virtual override returns (address) {
        _requireMinted(tokenId);
        return _tokenApprovals[tokenId];
    }
    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(
        address operator,
        bool approved
    ) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }
    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(
        address owner,
        address operator
    ) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }
    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(
            _isApprovedOrOwner(_msgSender(), tokenId),
            "ERC721: caller is not token owner nor approved"
        );
        _transfer(from, to, tokenId);
    }
    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }
    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) public virtual override {
        require(
            _isApprovedOrOwner(_msgSender(), tokenId),
            "ERC721: caller is not token owner nor approved"
        );
        _safeTransfer(from, to, tokenId, data);
    }
    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(
            _checkOnERC721Received(from, to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }
    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownersAndHashSeeds[tokenId].owner != address(0);
    }
    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(
        address spender,
        uint256 tokenId
    ) internal view virtual returns (bool) {
        address owner = ERC721_PackedHashSeed.ownerOf(tokenId);
        return (spender == owner ||
            isApprovedForAll(owner, spender) ||
            getApproved(tokenId) == spender);
    }
    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }
    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }
    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");
        _beforeTokenTransfer(address(0), to, tokenId);
        _balances[to] += 1;
        _ownersAndHashSeeds[tokenId].owner = to;
        emit Transfer(address(0), to, tokenId);
        _afterTokenTransfer(address(0), to, tokenId);
    }
    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721_PackedHashSeed.ownerOf(tokenId);
        _beforeTokenTransfer(owner, address(0), tokenId);
        // Clear approvals
        _approve(address(0), tokenId);
        _balances[owner] -= 1;
        delete _ownersAndHashSeeds[tokenId].owner;
        emit Transfer(owner, address(0), tokenId);
        _afterTokenTransfer(owner, address(0), tokenId);
    }
    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(
            ERC721_PackedHashSeed.ownerOf(tokenId) == from,
            "ERC721: transfer from incorrect owner"
        );
        require(to != address(0), "ERC721: transfer to the zero address");
        _beforeTokenTransfer(from, to, tokenId);
        // Clear approvals from the previous owner
        _approve(address(0), tokenId);
        _balances[from] -= 1;
        _balances[to] += 1;
        _ownersAndHashSeeds[tokenId].owner = to;
        emit Transfer(from, to, tokenId);
        _afterTokenTransfer(from, to, tokenId);
    }
    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721_PackedHashSeed.ownerOf(tokenId), to, tokenId);
    }
    /**
     * @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, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }
    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }
    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try
                IERC721Receiver(to).onERC721Received(
                    _msgSender(),
                    from,
                    tokenId,
                    data
                )
            returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert(
                        "ERC721: transfer to non ERC721Receiver implementer"
                    );
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }
    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;

/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <[email protected]>
interface IProxy {
    function masterCopy() external view returns (address);
}

/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract GnosisSafeProxy {
    // singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
    // To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
    address internal singleton;

    /// @dev Constructor function sets address of singleton contract.
    /// @param _singleton Singleton address.
    constructor(address _singleton) {
        require(_singleton != address(0), "Invalid singleton address provided");
        singleton = _singleton;
    }

    /// @dev Fallback function forwards all transactions and returns all received return data.
    fallback() external payable {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
            // 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
            if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
                mstore(0, _singleton)
                return(0, 0x20)
            }
            calldatacopy(0, 0, calldatasize())
            let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            if eq(success, 0) {
                revert(0, returndatasize())
            }
            return(0, returndatasize())
        }
    }
}

/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <[email protected]>
contract GnosisSafeProxyFactory {
    event ProxyCreation(GnosisSafeProxy proxy, address singleton);

    /// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
    /// @param singleton Address of singleton contract.
    /// @param data Payload for message call sent to new proxy contract.
    function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
        proxy = new GnosisSafeProxy(singleton);
        if (data.length > 0)
            // solhint-disable-next-line no-inline-assembly
            assembly {
                if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
                    revert(0, 0)
                }
            }
        emit ProxyCreation(proxy, singleton);
    }

    /// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
    function proxyRuntimeCode() public pure returns (bytes memory) {
        return type(GnosisSafeProxy).runtimeCode;
    }

    /// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
    function proxyCreationCode() public pure returns (bytes memory) {
        return type(GnosisSafeProxy).creationCode;
    }

    /// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
    ///      This method is only meant as an utility to be called from other methods
    /// @param _singleton Address of singleton contract.
    /// @param initializer Payload for message call sent to new proxy contract.
    /// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
    function deployProxyWithNonce(
        address _singleton,
        bytes memory initializer,
        uint256 saltNonce
    ) internal returns (GnosisSafeProxy proxy) {
        // If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
        bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
        bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
        // solhint-disable-next-line no-inline-assembly
        assembly {
            proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
        }
        require(address(proxy) != address(0), "Create2 call failed");
    }

    /// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
    /// @param _singleton Address of singleton contract.
    /// @param initializer Payload for message call sent to new proxy contract.
    /// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
    function createProxyWithNonce(
        address _singleton,
        bytes memory initializer,
        uint256 saltNonce
    ) public returns (GnosisSafeProxy proxy) {
        proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
        if (initializer.length > 0)
            // solhint-disable-next-line no-inline-assembly
            assembly {
                if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
                    revert(0, 0)
                }
            }
        emit ProxyCreation(proxy, _singleton);
    }

    /// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
    /// @param _singleton Address of singleton contract.
    /// @param initializer Payload for message call sent to new proxy contract.
    /// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
    /// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
    function createProxyWithCallback(
        address _singleton,
        bytes memory initializer,
        uint256 saltNonce,
        IProxyCreationCallback callback
    ) public returns (GnosisSafeProxy proxy) {
        uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
        proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
        if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
    }

    /// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
    ///      This method is only meant for address calculation purpose when you use an initializer that would revert,
    ///      therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
    /// @param _singleton Address of singleton contract.
    /// @param initializer Payload for message call sent to new proxy contract.
    /// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
    function calculateCreateProxyWithNonceAddress(
        address _singleton,
        bytes calldata initializer,
        uint256 saltNonce
    ) external returns (GnosisSafeProxy proxy) {
        proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
        revert(string(abi.encodePacked(proxy)));
    }
}

interface IProxyCreationCallback {
    function proxyCreated(
        GnosisSafeProxy proxy,
        address _singleton,
        bytes calldata initializer,
        uint256 saltNonce
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableMap.sol)
pragma solidity ^0.8.0;
import "./EnumerableSet.sol";
/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
 * supported.
 */
library EnumerableMap {
    using EnumerableSet for EnumerableSet.Bytes32Set;
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Map type with
    // bytes32 keys and values.
    // The Map implementation uses private functions, and user-facing
    // implementations (such as Uint256ToAddressMap) are just wrappers around
    // the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit
    // in bytes32.
    struct Map {
        // Storage of keys
        EnumerableSet.Bytes32Set _keys;
        mapping(bytes32 => bytes32) _values;
    }
    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function _set(
        Map storage map,
        bytes32 key,
        bytes32 value
    ) private returns (bool) {
        map._values[key] = value;
        return map._keys.add(key);
    }
    /**
     * @dev Removes a key-value pair from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function _remove(Map storage map, bytes32 key) private returns (bool) {
        delete map._values[key];
        return map._keys.remove(key);
    }
    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function _contains(Map storage map, bytes32 key) private view returns (bool) {
        return map._keys.contains(key);
    }
    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function _length(Map storage map) private view returns (uint256) {
        return map._keys.length();
    }
    /**
     * @dev Returns the key-value pair stored at position `index` in the map. O(1).
     *
     * Note that there are no guarantees on the ordering of entries inside the
     * array, and it may change when more entries are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
        bytes32 key = map._keys.at(index);
        return (key, map._values[key]);
    }
    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     */
    function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
        bytes32 value = map._values[key];
        if (value == bytes32(0)) {
            return (_contains(map, key), bytes32(0));
        } else {
            return (true, value);
        }
    }
    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function _get(Map storage map, bytes32 key) private view returns (bytes32) {
        bytes32 value = map._values[key];
        require(value != 0 || _contains(map, key), "EnumerableMap: nonexistent key");
        return value;
    }
    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {_tryGet}.
     */
    function _get(
        Map storage map,
        bytes32 key,
        string memory errorMessage
    ) private view returns (bytes32) {
        bytes32 value = map._values[key];
        require(value != 0 || _contains(map, key), errorMessage);
        return value;
    }
    // UintToAddressMap
    struct UintToAddressMap {
        Map _inner;
    }
    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(
        UintToAddressMap storage map,
        uint256 key,
        address value
    ) internal returns (bool) {
        return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
    }
    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
        return _remove(map._inner, bytes32(key));
    }
    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
        return _contains(map._inner, bytes32(key));
    }
    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToAddressMap storage map) internal view returns (uint256) {
        return _length(map._inner);
    }
    /**
     * @dev Returns the element stored at position `index` in the set. O(1).
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = _at(map._inner, index);
        return (uint256(key), address(uint160(uint256(value))));
    }
    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     *
     * _Available since v3.4._
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
        return (success, address(uint160(uint256(value))));
    }
    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key)))));
    }
    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryGet}.
     */
    function get(
        UintToAddressMap storage map,
        uint256 key,
        string memory errorMessage
    ) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol)
pragma solidity ^0.8.0;
/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.
    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }
    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }
    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];
        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.
            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;
            if (lastIndex != toDeleteIndex) {
                bytes32 lastvalue = set._values[lastIndex];
                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastvalue;
                // Update the index for the moved value
                set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
            }
            // Delete the slot where the moved value was stored
            set._values.pop();
            // Delete the index for the deleted slot
            delete set._indexes[value];
            return true;
        } else {
            return false;
        }
    }
    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }
    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }
    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }
    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }
    // Bytes32Set
    struct Bytes32Set {
        Set _inner;
    }
    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }
    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }
    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }
    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }
    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }
    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }
    // AddressSet
    struct AddressSet {
        Set _inner;
    }
    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }
    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }
    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }
    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }
    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }
    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;
        assembly {
            result := store
        }
        return result;
    }
    // UintSet
    struct UintSet {
        Set _inner;
    }
    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }
    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }
    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }
    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }
    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;
        assembly {
            result := store
        }
        return result;
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IAdminACLV0 {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     * @param previousSuperAdmin The previous superAdmin address.
     * @param newSuperAdmin The new superAdmin address.
     * @param genArt721CoreAddressesToUpdate Array of genArt721Core
     * addresses to update to the new superAdmin, for indexing purposes only.
     */
    event SuperAdminTransferred(
        address indexed previousSuperAdmin,
        address indexed newSuperAdmin,
        address[] genArt721CoreAddressesToUpdate
    );
    /// Type of the Admin ACL contract, e.g. "AdminACLV0"
    function AdminACLType() external view returns (string memory);
    /// super admin address
    function superAdmin() external view returns (address);
    /**
     * @notice Calls transferOwnership on other contract from this contract.
     * This is useful for updating to a new AdminACL contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function transferOwnershipOn(
        address _contract,
        address _newAdminACL
    ) external;
    /**
     * @notice Calls renounceOwnership on other contract from this contract.
     * @dev this function should be gated to only superAdmin-like addresses.
     */
    function renounceOwnershipOn(address _contract) external;
    /**
     * @notice Checks if sender `_sender` is allowed to call function with selector
     * `_selector` on contract `_contract`.
     */
    function allowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IFilteredMinterV0 {
    /**
     * @notice Price per token in wei updated for project `_projectId` to
     * `_pricePerTokenInWei`.
     */
    event PricePerTokenInWeiUpdated(
        uint256 indexed _projectId,
        uint256 indexed _pricePerTokenInWei
    );
    /**
     * @notice Currency updated for project `_projectId` to symbol
     * `_currencySymbol` and address `_currencyAddress`.
     */
    event ProjectCurrencyInfoUpdated(
        uint256 indexed _projectId,
        address indexed _currencyAddress,
        string _currencySymbol
    );
    /// togglePurchaseToDisabled updated
    event PurchaseToDisabledUpdated(
        uint256 indexed _projectId,
        bool _purchaseToDisabled
    );
    // getter function of public variable
    function minterType() external view returns (string memory);
    function genArt721CoreAddress() external returns (address);
    function minterFilterAddress() external returns (address);
    // Triggers a purchase of a token from the desired project, to the
    // TX-sending address.
    function purchase(
        uint256 _projectId
    ) external payable returns (uint256 tokenId);
    // Triggers a purchase of a token from the desired project, to the specified
    // receiving address.
    function purchaseTo(
        address _to,
        uint256 _projectId
    ) external payable returns (uint256 tokenId);
    // Toggles the ability for `purchaseTo` to be called directly with a
    // specified receiving address that differs from the TX-sending address.
    function togglePurchaseToDisabled(uint256 _projectId) external;
    // Called to make the minter contract aware of the max invocations for a
    // given project.
    function setProjectMaxInvocations(uint256 _projectId) external;
    // Gets if token price is configured, token price in wei, currency symbol,
    // and currency address, assuming this is project's minter.
    // Supersedes any defined core price.
    function getPriceInfo(
        uint256 _projectId
    )
        external
        view
        returns (
            bool isConfigured,
            uint256 tokenPriceInWei,
            string memory currencySymbol,
            address currencyAddress
        );
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
/// use the Royalty Registry's IManifold interface for token royalties
import "./IManifold.sol";
/**
 * @title This interface is intended to house interface items that are common
 * across all GenArt721CoreContractV3 flagship and derivative implementations.
 * This interface extends the IManifold royalty interface in order to
 * add support the Royalty Registry by default.
 * @author Art Blocks Inc.
 */
interface IGenArt721CoreContractV3_Base is IManifold {
    /**
     * @notice Token ID `_tokenId` minted to `_to`.
     */
    event Mint(address indexed _to, uint256 indexed _tokenId);
    /**
     * @notice currentMinter updated to `_currentMinter`.
     * @dev Implemented starting with V3 core
     */
    event MinterUpdated(address indexed _currentMinter);
    /**
     * @notice Platform updated on bytes32-encoded field `_field`.
     */
    event PlatformUpdated(bytes32 indexed _field);
    /**
     * @notice Project ID `_projectId` updated on bytes32-encoded field
     * `_update`.
     */
    event ProjectUpdated(uint256 indexed _projectId, bytes32 indexed _update);
    event ProposedArtistAddressesAndSplits(
        uint256 indexed _projectId,
        address _artistAddress,
        address _additionalPayeePrimarySales,
        uint256 _additionalPayeePrimarySalesPercentage,
        address _additionalPayeeSecondarySales,
        uint256 _additionalPayeeSecondarySalesPercentage
    );
    event AcceptedArtistAddressesAndSplits(uint256 indexed _projectId);
    // version and type of the core contract
    // coreVersion is a string of the form "0.x.y"
    function coreVersion() external view returns (string memory);
    // coreType is a string of the form "GenArt721CoreV3"
    function coreType() external view returns (string memory);
    // owner (pre-V3 was named admin) of contract
    // this is expected to be an Admin ACL contract for V3
    function owner() external view returns (address);
    // Admin ACL contract for V3, will be at the address owner()
    function adminACLContract() external returns (IAdminACLV0);
    // backwards-compatible (pre-V3) admin - equal to owner()
    function admin() external view returns (address);
    /**
     * Function determining if _sender is allowed to call function with
     * selector _selector on contract `_contract`. Intended to be used with
     * peripheral contracts such as minters, as well as internally by the
     * core contract itself.
     */
    function adminACLAllowed(
        address _sender,
        address _contract,
        bytes4 _selector
    ) external returns (bool);
    /// getter function of public variable
    function startingProjectId() external view returns (uint256);
    // getter function of public variable
    function nextProjectId() external view returns (uint256);
    // getter function of public mapping
    function tokenIdToProjectId(
        uint256 tokenId
    ) external view returns (uint256 projectId);
    // @dev this is not available in V0
    function isMintWhitelisted(address minter) external view returns (bool);
    function projectIdToArtistAddress(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySales(
        uint256 _projectId
    ) external view returns (address payable);
    function projectIdToAdditionalPayeePrimarySalesPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectIdToSecondaryMarketRoyaltyPercentage(
        uint256 _projectId
    ) external view returns (uint256);
    function projectURIInfo(
        uint256 _projectId
    ) external view returns (string memory projectBaseURI);
    // @dev new function in V3
    function projectStateData(
        uint256 _projectId
    )
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        );
    function projectDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory projectName,
            string memory artist,
            string memory description,
            string memory website,
            string memory license
        );
    function projectScriptDetails(
        uint256 _projectId
    )
        external
        view
        returns (
            string memory scriptTypeAndVersion,
            string memory aspectRatio,
            uint256 scriptCount
        );
    function projectScriptByIndex(
        uint256 _projectId,
        uint256 _index
    ) external view returns (string memory);
    function tokenIdToHash(uint256 _tokenId) external view returns (bytes32);
    // function to set a token's hash (must be guarded)
    function setTokenHash_8PT(uint256 _tokenId, bytes32 _hash) external;
    // @dev gas-optimized signature in V3 for `mint`
    function mint_Ecf(
        address _to,
        uint256 _projectId,
        address _by
    ) external returns (uint256 tokenId);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IAdminACLV0.sol";
import "./IGenArt721CoreContractV3_Base.sol";
/**
 * @title This interface extends IGenArt721CoreContractV3_Base with functions
 * that are part of the Art Blocks Flagship core contract.
 * @author Art Blocks Inc.
 */
// This interface extends IGenArt721CoreContractV3_Base with functions that are
// in part of the Art Blocks Flagship core contract.
interface IGenArt721CoreContractV3 is IGenArt721CoreContractV3_Base {
    // @dev new function in V3
    function getPrimaryRevenueSplits(
        uint256 _projectId,
        uint256 _price
    )
        external
        view
        returns (
            uint256 artblocksRevenue_,
            address payable artblocksAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        );
    // @dev Art Blocks primary sales payment address
    function artblocksPrimarySalesAddress()
        external
        view
        returns (address payable);
    /**
     * @notice Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales payment address (now called artblocksPrimarySalesAddress).
     */
    function artblocksAddress() external view returns (address payable);
    // @dev Percentage of primary sales allocated to Art Blocks
    function artblocksPrimarySalesPercentage() external view returns (uint256);
    /**
     * @notice Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales percentage (now called artblocksPrimarySalesPercentage).
     */
    function artblocksPercentage() external view returns (uint256);
    // @dev Art Blocks secondary sales royalties payment address
    function artblocksSecondarySalesAddress()
        external
        view
        returns (address payable);
    // @dev Basis points of secondary sales allocated to Art Blocks
    function artblocksSecondarySalesBPS() external view returns (uint256);
    /**
     * @notice Backwards-compatible (pre-V3) function  that gets artist +
     * artist's additional payee royalty data for token ID `_tokenId`.
     * WARNING: Does not include Art Blocks portion of royalties.
     */
    function getRoyaltyData(
        uint256 _tokenId
    )
        external
        view
        returns (
            address artistAddress,
            address additionalPayee,
            uint256 additionalPayeePercentage,
            uint256 royaltyFeeByID
        );
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @dev Royalty Registry interface, used to support the Royalty Registry.
/// @dev Source: https://github.com/manifoldxyz/royalty-registry-solidity/blob/main/contracts/specs/IManifold.sol
/// @author: manifold.xyz
/**
 * @dev Royalty interface for creator core classes
 */
interface IManifold {
    /**
     * @dev Get royalites of a token.  Returns list of receivers and basisPoints
     *
     *  bytes4(keccak256('getRoyalties(uint256)')) == 0xbb3bafd6
     *
     *  => 0xbb3bafd6 = 0xbb3bafd6
     */
    function getRoyalties(
        uint256 tokenId
    ) external view returns (address payable[] memory, uint256[] memory);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IMinterFilterV0 {
    /**
     * @notice Emitted when contract is deployed to notify indexing services
     * of the new contract deployment.
     */
    event Deployed();
    /**
     * @notice Approved minter `_minterAddress`.
     */
    event MinterApproved(address indexed _minterAddress, string _minterType);
    /**
     * @notice Revoked approval for minter `_minterAddress`
     */
    event MinterRevoked(address indexed _minterAddress);
    /**
     * @notice Minter `_minterAddress` of type `_minterType`
     * registered for project `_projectId`.
     */
    event ProjectMinterRegistered(
        uint256 indexed _projectId,
        address indexed _minterAddress,
        string _minterType
    );
    /**
     * @notice Any active minter removed for project `_projectId`.
     */
    event ProjectMinterRemoved(uint256 indexed _projectId);
    function genArt721CoreAddress() external returns (address);
    function setMinterForProject(uint256, address) external;
    function removeMinterForProject(uint256) external;
    function mint(
        address _to,
        uint256 _projectId,
        address sender
    ) external returns (uint256);
    function getMinterForProject(uint256) external view returns (address);
    function projectHasMinter(uint256) external view returns (bool);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
// Inspired by: https://ethereum.stackexchange.com/a/123950/103422
pragma solidity ^0.8.0;
/**
 * @dev Operations on bytes32 data type, dealing with conversion to string.
 */
library Bytes32Strings {
    /**
     * @dev Intended to convert a `bytes32`-encoded string literal to `string`.
     * Trims zero padding to arrive at original string literal.
     */
    function toString(
        bytes32 source
    ) internal pure returns (string memory result) {
        uint8 length = 0;
        while (source[length] != 0 && length < 32) {
            length++;
        }
        assembly {
            // free memory pointer
            result := mload(0x40)
            // update free memory pointer to new "memory end"
            // (offset is 64-bytes: 32 for length, 32 for data)
            mstore(0x40, add(result, 0x40))
            // store length in first 32-byte memory slot
            mstore(result, length)
            // write actual data in second 32-byte memory slot
            mstore(add(result, 0x20), source)
        }
    }
    /**
     * @dev Intended to check if a `bytes32`-encoded string contains a given
     * character with UTF-8 character code `utf8CharCode exactly `targetQty`
     * times. Does not support searching for multi-byte characters, only
     * characters with UTF-8 character codes < 0x80.
     */
    function containsExactCharacterQty(
        bytes32 source,
        uint8 utf8CharCode,
        uint8 targetQty
    ) internal pure returns (bool) {
        uint8 _occurrences = 0;
        uint8 i;
        for (i = 0; i < 32; ) {
            uint8 _charCode = uint8(source[i]);
            // if not a null byte, or a multi-byte UTF-8 character, check match
            if (_charCode != 0 && _charCode < 0x80) {
                if (_charCode == utf8CharCode) {
                    unchecked {
                        // no risk of overflow since max 32 iterations < max uin8=255
                        ++_occurrences;
                    }
                }
            }
            unchecked {
                // no risk of overflow since max 32 iterations < max uin8=255
                ++i;
            }
        }
        return _occurrences == targetQty;
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "../../interfaces/v0.8.x/IMinterFilterV0.sol";
import "../../interfaces/v0.8.x/IFilteredMinterV0.sol";
import "../../interfaces/v0.8.x/IAdminACLV0.sol";
import "../../interfaces/v0.8.x/IGenArt721CoreContractV3.sol";
import "../../libs/v0.8.x/Bytes32Strings.sol";
import "@openzeppelin-4.5/contracts/utils/structs/EnumerableMap.sol";
pragma solidity 0.8.19;
/**
 * @title Minter filter contract that allows filtered minters to be set
 * on a per-project basis.
 * This is designed to be used with IGenArt721CoreContractV3 contracts.
 * @author Art Blocks Inc.
 * @notice Privileged Roles and Ownership:
 * This contract is designed to be managed, with limited powers.
 * Privileged roles and abilities are controlled by the core contract's Admin
 * ACL contract and a project's artist. Both of these roles hold extensive
 * power and can modify a project's current minter.
 * Care must be taken to ensure that the admin ACL contract and artist
 * addresses are secure behind a multi-sig or other access control mechanism.
 * ----------------------------------------------------------------------------
 * The following functions are restricted to the core contract's Admin ACL
 * contract:
 * - addApprovedMinter
 * - removeApprovedMinter
 * - removeMintersForProjects
 * ----------------------------------------------------------------------------
 * The following functions are restricted to the core contract's Admin ACL
 * contract or a project's artist:
 * - setMinterForProject
 * - removeMinterForProject
 * ----------------------------------------------------------------------------
 * Additional admin and artist privileged roles may be described on minters
 */
contract MinterFilterV1 is IMinterFilterV0 {
    // add Enumerable Map methods
    using EnumerableMap for EnumerableMap.UintToAddressMap;
    // add Bytes32Strings methods
    using Bytes32Strings for bytes32;
    /// version & type of this core contract
    bytes32 constant MINTER_FILTER_VERSION = "v1.0.1";
    function minterFilterVersion() external pure returns (string memory) {
        return MINTER_FILTER_VERSION.toString();
    }
    bytes32 constant MINTER_FILTER_TYPE = "MinterFilterV1";
    function minterFilterType() external pure returns (string memory) {
        return MINTER_FILTER_TYPE.toString();
    }
    /// Core contract address this minter interacts with
    address public immutable genArt721CoreAddress;
    /// This contract integrates with the IV3 core contract
    IGenArt721CoreContractV3 private immutable genArtCoreContract;
    /// projectId => minter address
    EnumerableMap.UintToAddressMap private minterForProject;
    /// minter address => qty projects currently using minter
    mapping(address => uint256) public numProjectsUsingMinter;
    /// minter address => is an approved minter?
    mapping(address => bool) public isApprovedMinter;
    function _onlyNonZeroAddress(address _address) internal pure {
        require(_address != address(0), "Must input non-zero address");
    }
    // function to restrict access to only AdminACL allowed calls
    // @dev defers which ACL contract is used to the core contract
    function _onlyCoreAdminACL(bytes4 _selector) internal {
        require(_coreAdminACLAllowed(_selector), "Only Core AdminACL allowed");
    }
    // function to restrict access to only the artist of `_projectId`, or
    // AdminACL allowed calls
    // @dev defers which ACL contract is used to the core contract
    function _onlyCoreAdminACLOrArtist(
        uint256 _projectId,
        bytes4 _selector
    ) internal {
        require(
            msg.sender ==
                genArtCoreContract.projectIdToArtistAddress(_projectId) ||
                _coreAdminACLAllowed(_selector),
            "Only Core AdminACL or Artist"
        );
    }
    function _onlyValidProjectId(uint256 _projectId) internal view {
        require(
            _projectId < genArtCoreContract.nextProjectId(),
            "Only existing projects"
        );
    }
    function _usingApprovedMinter(address _minterAddress) internal view {
        require(
            isApprovedMinter[_minterAddress],
            "Only approved minters are allowed"
        );
    }
    /**
     * @notice Initializes contract to be a Minter for `_genArt721Address`.
     * @param _genArt721Address Art Blocks core contract address
     * this contract will be a minter for. Can never be updated.
     */
    constructor(address _genArt721Address) {
        _onlyNonZeroAddress(_genArt721Address);
        genArt721CoreAddress = _genArt721Address;
        genArtCoreContract = IGenArt721CoreContractV3(_genArt721Address);
        emit Deployed();
    }
    /**
     * @notice Internal function that determines if msg.sender is allowed to
     * call a function on this contract. Defers to core contract's
     * adminACLAllowed function.
     */
    function _coreAdminACLAllowed(bytes4 _selector) internal returns (bool) {
        return
            genArtCoreContract.adminACLAllowed(
                msg.sender,
                address(this),
                _selector
            );
    }
    /**
     * @notice Approves minter `_minterAddress`.
     * @param _minterAddress Minter to be added as an approved minter.
     */
    function addApprovedMinter(address _minterAddress) external {
        _onlyCoreAdminACL(this.addApprovedMinter.selector);
        _onlyNonZeroAddress(_minterAddress);
        isApprovedMinter[_minterAddress] = true;
        emit MinterApproved(
            _minterAddress,
            IFilteredMinterV0(_minterAddress).minterType()
        );
    }
    /**
     * @notice Removes previously approved minter `_minterAddress`.
     * @param _minterAddress Minter to remove.
     */
    function removeApprovedMinter(address _minterAddress) external {
        _onlyCoreAdminACL(this.removeApprovedMinter.selector);
        require(isApprovedMinter[_minterAddress], "Only approved minters");
        require(
            numProjectsUsingMinter[_minterAddress] == 0,
            "Only unused minters"
        );
        isApprovedMinter[_minterAddress] = false;
        emit MinterRevoked(_minterAddress);
    }
    /**
     * @notice Sets minter for project `_projectId` to minter
     * `_minterAddress`.
     * @param _projectId Project ID to set minter for.
     * @param _minterAddress Minter to be the project's minter.
     */
    function setMinterForProject(
        uint256 _projectId,
        address _minterAddress
    ) external {
        _onlyCoreAdminACLOrArtist(
            _projectId,
            this.setMinterForProject.selector
        );
        _usingApprovedMinter(_minterAddress);
        _onlyValidProjectId(_projectId);
        // decrement number of projects using a previous minter
        (bool hasPreviousMinter, address previousMinter) = minterForProject
            .tryGet(_projectId);
        if (hasPreviousMinter) {
            numProjectsUsingMinter[previousMinter]--;
        }
        // add new minter
        numProjectsUsingMinter[_minterAddress]++;
        minterForProject.set(_projectId, _minterAddress);
        emit ProjectMinterRegistered(
            _projectId,
            _minterAddress,
            IFilteredMinterV0(_minterAddress).minterType()
        );
    }
    /**
     * @notice Updates project `_projectId` to have no configured minter.
     * @param _projectId Project ID to remove minter.
     * @dev requires project to have an assigned minter
     */
    function removeMinterForProject(uint256 _projectId) external {
        _onlyCoreAdminACLOrArtist(
            _projectId,
            this.removeMinterForProject.selector
        );
        _removeMinterForProject(_projectId);
    }
    /**
     * @notice Updates an array of project IDs to have no configured minter.
     * @param _projectIds Array of project IDs to remove minters for.
     * @dev requires all project IDs to have an assigned minter
     * @dev caution with respect to single tx gas limits
     */
    function removeMintersForProjects(uint256[] calldata _projectIds) external {
        _onlyCoreAdminACL(this.removeMintersForProjects.selector);
        uint256 numProjects = _projectIds.length;
        for (uint256 i; i < numProjects; i++) {
            _removeMinterForProject(_projectIds[i]);
        }
    }
    /**
     * @notice Updates project `_projectId` to have no configured minter
     * (reverts tx if project does not have an assigned minter).
     * @param _projectId Project ID to remove minter.
     */
    function _removeMinterForProject(uint256 _projectId) private {
        // remove minter for project and emit
        // `minterForProject.get()` reverts tx if no minter set for project
        numProjectsUsingMinter[minterForProject.get(_projectId)]--;
        minterForProject.remove(_projectId);
        emit ProjectMinterRemoved(_projectId);
    }
    /**
     * @notice Mint a token from project `_projectId` to `_to`, originally
     * purchased by `sender`.
     * @param _to The new token's owner.
     * @param _projectId Project ID to mint a new token on.
     * @param sender Address purchasing a new token.
     * @return _tokenId Token ID of minted token
     * @dev reverts w/nonexistent key error when project has no assigned minter
     */
    function mint(
        address _to,
        uint256 _projectId,
        address sender
    ) external returns (uint256 _tokenId) {
        // CHECKS
        // minter is the project's minter
        require(
            msg.sender == minterForProject.get(_projectId),
            "Only assigned minter"
        );
        // EFFECTS
        uint256 tokenId = genArtCoreContract.mint_Ecf(_to, _projectId, sender);
        return tokenId;
    }
    /**
     * @notice Gets the assigned minter for project `_projectId`.
     * @param _projectId Project ID to query.
     * @return address Minter address assigned to project `_projectId`
     * @dev requires project to have an assigned minter
     */
    function getMinterForProject(
        uint256 _projectId
    ) external view returns (address) {
        _onlyValidProjectId(_projectId);
        (bool _hasMinter, address _currentMinter) = minterForProject.tryGet(
            _projectId
        );
        require(_hasMinter, "No minter assigned");
        return _currentMinter;
    }
    /**
     * @notice Queries if project `_projectId` has an assigned minter.
     * @param _projectId Project ID to query.
     * @return bool true if project has an assigned minter, else false
     */
    function projectHasMinter(uint256 _projectId) external view returns (bool) {
        _onlyValidProjectId(_projectId);
        (bool _hasMinter, ) = minterForProject.tryGet(_projectId);
        return _hasMinter;
    }
    /**
     * @notice Gets quantity of projects that have assigned minters.
     * @return uint256 quantity of projects that have assigned minters
     */
    function getNumProjectsWithMinters() external view returns (uint256) {
        return minterForProject.length();
    }
    /**
     * @notice Get project ID and minter address at index `_index` of
     * enumerable map.
     * @param _index enumerable map index to query.
     * @return projectId project ID at index `_index`
     * @return minterAddress minter address for project at index `_index`
     * @return minterType minter type of minter at minterAddress
     * @dev index must be < quantity of projects that have assigned minters
     */
    function getProjectAndMinterInfoAt(
        uint256 _index
    )
        external
        view
        returns (
            uint256 projectId,
            address minterAddress,
            string memory minterType
        )
    {
        (projectId, minterAddress) = minterForProject.at(_index);
        minterType = IFilteredMinterV0(minterAddress).minterType();
        return (projectId, minterAddress, minterType);
    }
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "./base/ModuleManager.sol";
import "./base/OwnerManager.sol";
import "./base/FallbackManager.sol";
import "./base/GuardManager.sol";
import "./common/EtherPaymentFallback.sol";
import "./common/Singleton.sol";
import "./common/SignatureDecoder.sol";
import "./common/SecuredTokenTransfer.sol";
import "./common/StorageAccessible.sol";
import "./interfaces/ISignatureValidator.sol";
import "./external/GnosisSafeMath.sol";
/// @title Gnosis Safe - A multisignature wallet with support for confirmations using signed messages based on ERC191.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract GnosisSafe is
    EtherPaymentFallback,
    Singleton,
    ModuleManager,
    OwnerManager,
    SignatureDecoder,
    SecuredTokenTransfer,
    ISignatureValidatorConstants,
    FallbackManager,
    StorageAccessible,
    GuardManager
{
    using GnosisSafeMath for uint256;
    string public constant VERSION = "1.3.0";
    // keccak256(
    //     "EIP712Domain(uint256 chainId,address verifyingContract)"
    // );
    bytes32 private constant DOMAIN_SEPARATOR_TYPEHASH = 0x47e79534a245952e8b16893a336b85a3d9ea9fa8c573f3d803afb92a79469218;
    // keccak256(
    //     "SafeTx(address to,uint256 value,bytes data,uint8 operation,uint256 safeTxGas,uint256 baseGas,uint256 gasPrice,address gasToken,address refundReceiver,uint256 nonce)"
    // );
    bytes32 private constant SAFE_TX_TYPEHASH = 0xbb8310d486368db6bd6f849402fdd73ad53d316b5a4b2644ad6efe0f941286d8;
    event SafeSetup(address indexed initiator, address[] owners, uint256 threshold, address initializer, address fallbackHandler);
    event ApproveHash(bytes32 indexed approvedHash, address indexed owner);
    event SignMsg(bytes32 indexed msgHash);
    event ExecutionFailure(bytes32 txHash, uint256 payment);
    event ExecutionSuccess(bytes32 txHash, uint256 payment);
    uint256 public nonce;
    bytes32 private _deprecatedDomainSeparator;
    // Mapping to keep track of all message hashes that have been approve by ALL REQUIRED owners
    mapping(bytes32 => uint256) public signedMessages;
    // Mapping to keep track of all hashes (message or transaction) that have been approve by ANY owners
    mapping(address => mapping(bytes32 => uint256)) public approvedHashes;
    // This constructor ensures that this contract can only be used as a master copy for Proxy contracts
    constructor() {
        // By setting the threshold it is not possible to call setup anymore,
        // so we create a Safe with 0 owners and threshold 1.
        // This is an unusable Safe, perfect for the singleton
        threshold = 1;
    }
    /// @dev Setup function sets initial storage of contract.
    /// @param _owners List of Safe owners.
    /// @param _threshold Number of required confirmations for a Safe transaction.
    /// @param to Contract address for optional delegate call.
    /// @param data Data payload for optional delegate call.
    /// @param fallbackHandler Handler for fallback calls to this contract
    /// @param paymentToken Token that should be used for the payment (0 is ETH)
    /// @param payment Value that should be paid
    /// @param paymentReceiver Adddress that should receive the payment (or 0 if tx.origin)
    function setup(
        address[] calldata _owners,
        uint256 _threshold,
        address to,
        bytes calldata data,
        address fallbackHandler,
        address paymentToken,
        uint256 payment,
        address payable paymentReceiver
    ) external {
        // setupOwners checks if the Threshold is already set, therefore preventing that this method is called twice
        setupOwners(_owners, _threshold);
        if (fallbackHandler != address(0)) internalSetFallbackHandler(fallbackHandler);
        // As setupOwners can only be called if the contract has not been initialized we don't need a check for setupModules
        setupModules(to, data);
        if (payment > 0) {
            // To avoid running into issues with EIP-170 we reuse the handlePayment function (to avoid adjusting code of that has been verified we do not adjust the method itself)
            // baseGas = 0, gasPrice = 1 and gas = payment => amount = (payment + 0) * 1 = payment
            handlePayment(payment, 0, 1, paymentToken, paymentReceiver);
        }
        emit SafeSetup(msg.sender, _owners, _threshold, to, fallbackHandler);
    }
    /// @dev Allows to execute a Safe transaction confirmed by required number of owners and then pays the account that submitted the transaction.
    ///      Note: The fees are always transferred, even if the user transaction fails.
    /// @param to Destination address of Safe transaction.
    /// @param value Ether value of Safe transaction.
    /// @param data Data payload of Safe transaction.
    /// @param operation Operation type of Safe transaction.
    /// @param safeTxGas Gas that should be used for the Safe transaction.
    /// @param baseGas Gas costs that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund)
    /// @param gasPrice Gas price that should be used for the payment calculation.
    /// @param gasToken Token address (or 0 if ETH) that is used for the payment.
    /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
    /// @param signatures Packed signature data ({bytes32 r}{bytes32 s}{uint8 v})
    function execTransaction(
        address to,
        uint256 value,
        bytes calldata data,
        Enum.Operation operation,
        uint256 safeTxGas,
        uint256 baseGas,
        uint256 gasPrice,
        address gasToken,
        address payable refundReceiver,
        bytes memory signatures
    ) public payable virtual returns (bool success) {
        bytes32 txHash;
        // Use scope here to limit variable lifetime and prevent `stack too deep` errors
        {
            bytes memory txHashData =
                encodeTransactionData(
                    // Transaction info
                    to,
                    value,
                    data,
                    operation,
                    safeTxGas,
                    // Payment info
                    baseGas,
                    gasPrice,
                    gasToken,
                    refundReceiver,
                    // Signature info
                    nonce
                );
            // Increase nonce and execute transaction.
            nonce++;
            txHash = keccak256(txHashData);
            checkSignatures(txHash, txHashData, signatures);
        }
        address guard = getGuard();
        {
            if (guard != address(0)) {
                Guard(guard).checkTransaction(
                    // Transaction info
                    to,
                    value,
                    data,
                    operation,
                    safeTxGas,
                    // Payment info
                    baseGas,
                    gasPrice,
                    gasToken,
                    refundReceiver,
                    // Signature info
                    signatures,
                    msg.sender
                );
            }
        }
        // We require some gas to emit the events (at least 2500) after the execution and some to perform code until the execution (500)
        // We also include the 1/64 in the check that is not send along with a call to counteract potential shortings because of EIP-150
        require(gasleft() >= ((safeTxGas * 64) / 63).max(safeTxGas + 2500) + 500, "GS010");
        // Use scope here to limit variable lifetime and prevent `stack too deep` errors
        {
            uint256 gasUsed = gasleft();
            // If the gasPrice is 0 we assume that nearly all available gas can be used (it is always more than safeTxGas)
            // We only substract 2500 (compared to the 3000 before) to ensure that the amount passed is still higher than safeTxGas
            success = execute(to, value, data, operation, gasPrice == 0 ? (gasleft() - 2500) : safeTxGas);
            gasUsed = gasUsed.sub(gasleft());
            // If no safeTxGas and no gasPrice was set (e.g. both are 0), then the internal tx is required to be successful
            // This makes it possible to use `estimateGas` without issues, as it searches for the minimum gas where the tx doesn't revert
            require(success || safeTxGas != 0 || gasPrice != 0, "GS013");
            // We transfer the calculated tx costs to the tx.origin to avoid sending it to intermediate contracts that have made calls
            uint256 payment = 0;
            if (gasPrice > 0) {
                payment = handlePayment(gasUsed, baseGas, gasPrice, gasToken, refundReceiver);
            }
            if (success) emit ExecutionSuccess(txHash, payment);
            else emit ExecutionFailure(txHash, payment);
        }
        {
            if (guard != address(0)) {
                Guard(guard).checkAfterExecution(txHash, success);
            }
        }
    }
    function handlePayment(
        uint256 gasUsed,
        uint256 baseGas,
        uint256 gasPrice,
        address gasToken,
        address payable refundReceiver
    ) private returns (uint256 payment) {
        // solhint-disable-next-line avoid-tx-origin
        address payable receiver = refundReceiver == address(0) ? payable(tx.origin) : refundReceiver;
        if (gasToken == address(0)) {
            // For ETH we will only adjust the gas price to not be higher than the actual used gas price
            payment = gasUsed.add(baseGas).mul(gasPrice < tx.gasprice ? gasPrice : tx.gasprice);
            require(receiver.send(payment), "GS011");
        } else {
            payment = gasUsed.add(baseGas).mul(gasPrice);
            require(transferToken(gasToken, receiver, payment), "GS012");
        }
    }
    /**
     * @dev Checks whether the signature provided is valid for the provided data, hash. Will revert otherwise.
     * @param dataHash Hash of the data (could be either a message hash or transaction hash)
     * @param data That should be signed (this is passed to an external validator contract)
     * @param signatures Signature data that should be verified. Can be ECDSA signature, contract signature (EIP-1271) or approved hash.
     */
    function checkSignatures(
        bytes32 dataHash,
        bytes memory data,
        bytes memory signatures
    ) public view {
        // Load threshold to avoid multiple storage loads
        uint256 _threshold = threshold;
        // Check that a threshold is set
        require(_threshold > 0, "GS001");
        checkNSignatures(dataHash, data, signatures, _threshold);
    }
    /**
     * @dev Checks whether the signature provided is valid for the provided data, hash. Will revert otherwise.
     * @param dataHash Hash of the data (could be either a message hash or transaction hash)
     * @param data That should be signed (this is passed to an external validator contract)
     * @param signatures Signature data that should be verified. Can be ECDSA signature, contract signature (EIP-1271) or approved hash.
     * @param requiredSignatures Amount of required valid signatures.
     */
    function checkNSignatures(
        bytes32 dataHash,
        bytes memory data,
        bytes memory signatures,
        uint256 requiredSignatures
    ) public view {
        // Check that the provided signature data is not too short
        require(signatures.length >= requiredSignatures.mul(65), "GS020");
        // There cannot be an owner with address 0.
        address lastOwner = address(0);
        address currentOwner;
        uint8 v;
        bytes32 r;
        bytes32 s;
        uint256 i;
        for (i = 0; i < requiredSignatures; i++) {
            (v, r, s) = signatureSplit(signatures, i);
            if (v == 0) {
                // If v is 0 then it is a contract signature
                // When handling contract signatures the address of the contract is encoded into r
                currentOwner = address(uint160(uint256(r)));
                // Check that signature data pointer (s) is not pointing inside the static part of the signatures bytes
                // This check is not completely accurate, since it is possible that more signatures than the threshold are send.
                // Here we only check that the pointer is not pointing inside the part that is being processed
                require(uint256(s) >= requiredSignatures.mul(65), "GS021");
                // Check that signature data pointer (s) is in bounds (points to the length of data -> 32 bytes)
                require(uint256(s).add(32) <= signatures.length, "GS022");
                // Check if the contract signature is in bounds: start of data is s + 32 and end is start + signature length
                uint256 contractSignatureLen;
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    contractSignatureLen := mload(add(add(signatures, s), 0x20))
                }
                require(uint256(s).add(32).add(contractSignatureLen) <= signatures.length, "GS023");
                // Check signature
                bytes memory contractSignature;
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    // The signature data for contract signatures is appended to the concatenated signatures and the offset is stored in s
                    contractSignature := add(add(signatures, s), 0x20)
                }
                require(ISignatureValidator(currentOwner).isValidSignature(data, contractSignature) == EIP1271_MAGIC_VALUE, "GS024");
            } else if (v == 1) {
                // If v is 1 then it is an approved hash
                // When handling approved hashes the address of the approver is encoded into r
                currentOwner = address(uint160(uint256(r)));
                // Hashes are automatically approved by the sender of the message or when they have been pre-approved via a separate transaction
                require(msg.sender == currentOwner || approvedHashes[currentOwner][dataHash] != 0, "GS025");
            } else if (v > 30) {
                // If v > 30 then default va (27,28) has been adjusted for eth_sign flow
                // To support eth_sign and similar we adjust v and hash the messageHash with the Ethereum message prefix before applying ecrecover
                currentOwner = ecrecover(keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\
32", dataHash)), v - 4, r, s);
            } else {
                // Default is the ecrecover flow with the provided data hash
                // Use ecrecover with the messageHash for EOA signatures
                currentOwner = ecrecover(dataHash, v, r, s);
            }
            require(currentOwner > lastOwner && owners[currentOwner] != address(0) && currentOwner != SENTINEL_OWNERS, "GS026");
            lastOwner = currentOwner;
        }
    }
    /// @dev Allows to estimate a Safe transaction.
    ///      This method is only meant for estimation purpose, therefore the call will always revert and encode the result in the revert data.
    ///      Since the `estimateGas` function includes refunds, call this method to get an estimated of the costs that are deducted from the safe with `execTransaction`
    /// @param to Destination address of Safe transaction.
    /// @param value Ether value of Safe transaction.
    /// @param data Data payload of Safe transaction.
    /// @param operation Operation type of Safe transaction.
    /// @return Estimate without refunds and overhead fees (base transaction and payload data gas costs).
    /// @notice Deprecated in favor of common/StorageAccessible.sol and will be removed in next version.
    function requiredTxGas(
        address to,
        uint256 value,
        bytes calldata data,
        Enum.Operation operation
    ) external returns (uint256) {
        uint256 startGas = gasleft();
        // We don't provide an error message here, as we use it to return the estimate
        require(execute(to, value, data, operation, gasleft()));
        uint256 requiredGas = startGas - gasleft();
        // Convert response to string and return via error message
        revert(string(abi.encodePacked(requiredGas)));
    }
    /**
     * @dev Marks a hash as approved. This can be used to validate a hash that is used by a signature.
     * @param hashToApprove The hash that should be marked as approved for signatures that are verified by this contract.
     */
    function approveHash(bytes32 hashToApprove) external {
        require(owners[msg.sender] != address(0), "GS030");
        approvedHashes[msg.sender][hashToApprove] = 1;
        emit ApproveHash(hashToApprove, msg.sender);
    }
    /// @dev Returns the chain id used by this contract.
    function getChainId() public view returns (uint256) {
        uint256 id;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            id := chainid()
        }
        return id;
    }
    function domainSeparator() public view returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_SEPARATOR_TYPEHASH, getChainId(), this));
    }
    /// @dev Returns the bytes that are hashed to be signed by owners.
    /// @param to Destination address.
    /// @param value Ether value.
    /// @param data Data payload.
    /// @param operation Operation type.
    /// @param safeTxGas Gas that should be used for the safe transaction.
    /// @param baseGas Gas costs for that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund)
    /// @param gasPrice Maximum gas price that should be used for this transaction.
    /// @param gasToken Token address (or 0 if ETH) that is used for the payment.
    /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
    /// @param _nonce Transaction nonce.
    /// @return Transaction hash bytes.
    function encodeTransactionData(
        address to,
        uint256 value,
        bytes calldata data,
        Enum.Operation operation,
        uint256 safeTxGas,
        uint256 baseGas,
        uint256 gasPrice,
        address gasToken,
        address refundReceiver,
        uint256 _nonce
    ) public view returns (bytes memory) {
        bytes32 safeTxHash =
            keccak256(
                abi.encode(
                    SAFE_TX_TYPEHASH,
                    to,
                    value,
                    keccak256(data),
                    operation,
                    safeTxGas,
                    baseGas,
                    gasPrice,
                    gasToken,
                    refundReceiver,
                    _nonce
                )
            );
        return abi.encodePacked(bytes1(0x19), bytes1(0x01), domainSeparator(), safeTxHash);
    }
    /// @dev Returns hash to be signed by owners.
    /// @param to Destination address.
    /// @param value Ether value.
    /// @param data Data payload.
    /// @param operation Operation type.
    /// @param safeTxGas Fas that should be used for the safe transaction.
    /// @param baseGas Gas costs for data used to trigger the safe transaction.
    /// @param gasPrice Maximum gas price that should be used for this transaction.
    /// @param gasToken Token address (or 0 if ETH) that is used for the payment.
    /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
    /// @param _nonce Transaction nonce.
    /// @return Transaction hash.
    function getTransactionHash(
        address to,
        uint256 value,
        bytes calldata data,
        Enum.Operation operation,
        uint256 safeTxGas,
        uint256 baseGas,
        uint256 gasPrice,
        address gasToken,
        address refundReceiver,
        uint256 _nonce
    ) public view returns (bytes32) {
        return keccak256(encodeTransactionData(to, value, data, operation, safeTxGas, baseGas, gasPrice, gasToken, refundReceiver, _nonce));
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "../common/Enum.sol";
/// @title Executor - A contract that can execute transactions
/// @author Richard Meissner - <[email protected]>
contract Executor {
    function execute(
        address to,
        uint256 value,
        bytes memory data,
        Enum.Operation operation,
        uint256 txGas
    ) internal returns (bool success) {
        if (operation == Enum.Operation.DelegateCall) {
            // solhint-disable-next-line no-inline-assembly
            assembly {
                success := delegatecall(txGas, to, add(data, 0x20), mload(data), 0, 0)
            }
        } else {
            // solhint-disable-next-line no-inline-assembly
            assembly {
                success := call(txGas, to, value, add(data, 0x20), mload(data), 0, 0)
            }
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "../common/SelfAuthorized.sol";
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
/// @author Richard Meissner - <[email protected]>
contract FallbackManager is SelfAuthorized {
    event ChangedFallbackHandler(address handler);
    // keccak256("fallback_manager.handler.address")
    bytes32 internal constant FALLBACK_HANDLER_STORAGE_SLOT = 0x6c9a6c4a39284e37ed1cf53d337577d14212a4870fb976a4366c693b939918d5;
    function internalSetFallbackHandler(address handler) internal {
        bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, handler)
        }
    }
    /// @dev Allows to add a contract to handle fallback calls.
    ///      Only fallback calls without value and with data will be forwarded.
    ///      This can only be done via a Safe transaction.
    /// @param handler contract to handle fallbacks calls.
    function setFallbackHandler(address handler) public authorized {
        internalSetFallbackHandler(handler);
        emit ChangedFallbackHandler(handler);
    }
    // solhint-disable-next-line payable-fallback,no-complex-fallback
    fallback() external {
        bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let handler := sload(slot)
            if iszero(handler) {
                return(0, 0)
            }
            calldatacopy(0, 0, calldatasize())
            // The msg.sender address is shifted to the left by 12 bytes to remove the padding
            // Then the address without padding is stored right after the calldata
            mstore(calldatasize(), shl(96, caller()))
            // Add 20 bytes for the address appended add the end
            let success := call(gas(), handler, 0, 0, add(calldatasize(), 20), 0, 0)
            returndatacopy(0, 0, returndatasize())
            if iszero(success) {
                revert(0, returndatasize())
            }
            return(0, returndatasize())
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "../common/Enum.sol";
import "../common/SelfAuthorized.sol";
interface Guard {
    function checkTransaction(
        address to,
        uint256 value,
        bytes memory data,
        Enum.Operation operation,
        uint256 safeTxGas,
        uint256 baseGas,
        uint256 gasPrice,
        address gasToken,
        address payable refundReceiver,
        bytes memory signatures,
        address msgSender
    ) external;
    function checkAfterExecution(bytes32 txHash, bool success) external;
}
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
/// @author Richard Meissner - <[email protected]>
contract GuardManager is SelfAuthorized {
    event ChangedGuard(address guard);
    // keccak256("guard_manager.guard.address")
    bytes32 internal constant GUARD_STORAGE_SLOT = 0x4a204f620c8c5ccdca3fd54d003badd85ba500436a431f0cbda4f558c93c34c8;
    /// @dev Set a guard that checks transactions before execution
    /// @param guard The address of the guard to be used or the 0 address to disable the guard
    function setGuard(address guard) external authorized {
        bytes32 slot = GUARD_STORAGE_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, guard)
        }
        emit ChangedGuard(guard);
    }
    function getGuard() internal view returns (address guard) {
        bytes32 slot = GUARD_STORAGE_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            guard := sload(slot)
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "../common/Enum.sol";
import "../common/SelfAuthorized.sol";
import "./Executor.sol";
/// @title Module Manager - A contract that manages modules that can execute transactions via this contract
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract ModuleManager is SelfAuthorized, Executor {
    event EnabledModule(address module);
    event DisabledModule(address module);
    event ExecutionFromModuleSuccess(address indexed module);
    event ExecutionFromModuleFailure(address indexed module);
    address internal constant SENTINEL_MODULES = address(0x1);
    mapping(address => address) internal modules;
    function setupModules(address to, bytes memory data) internal {
        require(modules[SENTINEL_MODULES] == address(0), "GS100");
        modules[SENTINEL_MODULES] = SENTINEL_MODULES;
        if (to != address(0))
            // Setup has to complete successfully or transaction fails.
            require(execute(to, 0, data, Enum.Operation.DelegateCall, gasleft()), "GS000");
    }
    /// @dev Allows to add a module to the whitelist.
    ///      This can only be done via a Safe transaction.
    /// @notice Enables the module `module` for the Safe.
    /// @param module Module to be whitelisted.
    function enableModule(address module) public authorized {
        // Module address cannot be null or sentinel.
        require(module != address(0) && module != SENTINEL_MODULES, "GS101");
        // Module cannot be added twice.
        require(modules[module] == address(0), "GS102");
        modules[module] = modules[SENTINEL_MODULES];
        modules[SENTINEL_MODULES] = module;
        emit EnabledModule(module);
    }
    /// @dev Allows to remove a module from the whitelist.
    ///      This can only be done via a Safe transaction.
    /// @notice Disables the module `module` for the Safe.
    /// @param prevModule Module that pointed to the module to be removed in the linked list
    /// @param module Module to be removed.
    function disableModule(address prevModule, address module) public authorized {
        // Validate module address and check that it corresponds to module index.
        require(module != address(0) && module != SENTINEL_MODULES, "GS101");
        require(modules[prevModule] == module, "GS103");
        modules[prevModule] = modules[module];
        modules[module] = address(0);
        emit DisabledModule(module);
    }
    /// @dev Allows a Module to execute a Safe transaction without any further confirmations.
    /// @param to Destination address of module transaction.
    /// @param value Ether value of module transaction.
    /// @param data Data payload of module transaction.
    /// @param operation Operation type of module transaction.
    function execTransactionFromModule(
        address to,
        uint256 value,
        bytes memory data,
        Enum.Operation operation
    ) public virtual returns (bool success) {
        // Only whitelisted modules are allowed.
        require(msg.sender != SENTINEL_MODULES && modules[msg.sender] != address(0), "GS104");
        // Execute transaction without further confirmations.
        success = execute(to, value, data, operation, gasleft());
        if (success) emit ExecutionFromModuleSuccess(msg.sender);
        else emit ExecutionFromModuleFailure(msg.sender);
    }
    /// @dev Allows a Module to execute a Safe transaction without any further confirmations and return data
    /// @param to Destination address of module transaction.
    /// @param value Ether value of module transaction.
    /// @param data Data payload of module transaction.
    /// @param operation Operation type of module transaction.
    function execTransactionFromModuleReturnData(
        address to,
        uint256 value,
        bytes memory data,
        Enum.Operation operation
    ) public returns (bool success, bytes memory returnData) {
        success = execTransactionFromModule(to, value, data, operation);
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Load free memory location
            let ptr := mload(0x40)
            // We allocate memory for the return data by setting the free memory location to
            // current free memory location + data size + 32 bytes for data size value
            mstore(0x40, add(ptr, add(returndatasize(), 0x20)))
            // Store the size
            mstore(ptr, returndatasize())
            // Store the data
            returndatacopy(add(ptr, 0x20), 0, returndatasize())
            // Point the return data to the correct memory location
            returnData := ptr
        }
    }
    /// @dev Returns if an module is enabled
    /// @return True if the module is enabled
    function isModuleEnabled(address module) public view returns (bool) {
        return SENTINEL_MODULES != module && modules[module] != address(0);
    }
    /// @dev Returns array of modules.
    /// @param start Start of the page.
    /// @param pageSize Maximum number of modules that should be returned.
    /// @return array Array of modules.
    /// @return next Start of the next page.
    function getModulesPaginated(address start, uint256 pageSize) external view returns (address[] memory array, address next) {
        // Init array with max page size
        array = new address[](pageSize);
        // Populate return array
        uint256 moduleCount = 0;
        address currentModule = modules[start];
        while (currentModule != address(0x0) && currentModule != SENTINEL_MODULES && moduleCount < pageSize) {
            array[moduleCount] = currentModule;
            currentModule = modules[currentModule];
            moduleCount++;
        }
        next = currentModule;
        // Set correct size of returned array
        // solhint-disable-next-line no-inline-assembly
        assembly {
            mstore(array, moduleCount)
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
import "../common/SelfAuthorized.sol";
/// @title OwnerManager - Manages a set of owners and a threshold to perform actions.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract OwnerManager is SelfAuthorized {
    event AddedOwner(address owner);
    event RemovedOwner(address owner);
    event ChangedThreshold(uint256 threshold);
    address internal constant SENTINEL_OWNERS = address(0x1);
    mapping(address => address) internal owners;
    uint256 internal ownerCount;
    uint256 internal threshold;
    /// @dev Setup function sets initial storage of contract.
    /// @param _owners List of Safe owners.
    /// @param _threshold Number of required confirmations for a Safe transaction.
    function setupOwners(address[] memory _owners, uint256 _threshold) internal {
        // Threshold can only be 0 at initialization.
        // Check ensures that setup function can only be called once.
        require(threshold == 0, "GS200");
        // Validate that threshold is smaller than number of added owners.
        require(_threshold <= _owners.length, "GS201");
        // There has to be at least one Safe owner.
        require(_threshold >= 1, "GS202");
        // Initializing Safe owners.
        address currentOwner = SENTINEL_OWNERS;
        for (uint256 i = 0; i < _owners.length; i++) {
            // Owner address cannot be null.
            address owner = _owners[i];
            require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this) && currentOwner != owner, "GS203");
            // No duplicate owners allowed.
            require(owners[owner] == address(0), "GS204");
            owners[currentOwner] = owner;
            currentOwner = owner;
        }
        owners[currentOwner] = SENTINEL_OWNERS;
        ownerCount = _owners.length;
        threshold = _threshold;
    }
    /// @dev Allows to add a new owner to the Safe and update the threshold at the same time.
    ///      This can only be done via a Safe transaction.
    /// @notice Adds the owner `owner` to the Safe and updates the threshold to `_threshold`.
    /// @param owner New owner address.
    /// @param _threshold New threshold.
    function addOwnerWithThreshold(address owner, uint256 _threshold) public authorized {
        // Owner address cannot be null, the sentinel or the Safe itself.
        require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this), "GS203");
        // No duplicate owners allowed.
        require(owners[owner] == address(0), "GS204");
        owners[owner] = owners[SENTINEL_OWNERS];
        owners[SENTINEL_OWNERS] = owner;
        ownerCount++;
        emit AddedOwner(owner);
        // Change threshold if threshold was changed.
        if (threshold != _threshold) changeThreshold(_threshold);
    }
    /// @dev Allows to remove an owner from the Safe and update the threshold at the same time.
    ///      This can only be done via a Safe transaction.
    /// @notice Removes the owner `owner` from the Safe and updates the threshold to `_threshold`.
    /// @param prevOwner Owner that pointed to the owner to be removed in the linked list
    /// @param owner Owner address to be removed.
    /// @param _threshold New threshold.
    function removeOwner(
        address prevOwner,
        address owner,
        uint256 _threshold
    ) public authorized {
        // Only allow to remove an owner, if threshold can still be reached.
        require(ownerCount - 1 >= _threshold, "GS201");
        // Validate owner address and check that it corresponds to owner index.
        require(owner != address(0) && owner != SENTINEL_OWNERS, "GS203");
        require(owners[prevOwner] == owner, "GS205");
        owners[prevOwner] = owners[owner];
        owners[owner] = address(0);
        ownerCount--;
        emit RemovedOwner(owner);
        // Change threshold if threshold was changed.
        if (threshold != _threshold) changeThreshold(_threshold);
    }
    /// @dev Allows to swap/replace an owner from the Safe with another address.
    ///      This can only be done via a Safe transaction.
    /// @notice Replaces the owner `oldOwner` in the Safe with `newOwner`.
    /// @param prevOwner Owner that pointed to the owner to be replaced in the linked list
    /// @param oldOwner Owner address to be replaced.
    /// @param newOwner New owner address.
    function swapOwner(
        address prevOwner,
        address oldOwner,
        address newOwner
    ) public authorized {
        // Owner address cannot be null, the sentinel or the Safe itself.
        require(newOwner != address(0) && newOwner != SENTINEL_OWNERS && newOwner != address(this), "GS203");
        // No duplicate owners allowed.
        require(owners[newOwner] == address(0), "GS204");
        // Validate oldOwner address and check that it corresponds to owner index.
        require(oldOwner != address(0) && oldOwner != SENTINEL_OWNERS, "GS203");
        require(owners[prevOwner] == oldOwner, "GS205");
        owners[newOwner] = owners[oldOwner];
        owners[prevOwner] = newOwner;
        owners[oldOwner] = address(0);
        emit RemovedOwner(oldOwner);
        emit AddedOwner(newOwner);
    }
    /// @dev Allows to update the number of required confirmations by Safe owners.
    ///      This can only be done via a Safe transaction.
    /// @notice Changes the threshold of the Safe to `_threshold`.
    /// @param _threshold New threshold.
    function changeThreshold(uint256 _threshold) public authorized {
        // Validate that threshold is smaller than number of owners.
        require(_threshold <= ownerCount, "GS201");
        // There has to be at least one Safe owner.
        require(_threshold >= 1, "GS202");
        threshold = _threshold;
        emit ChangedThreshold(threshold);
    }
    function getThreshold() public view returns (uint256) {
        return threshold;
    }
    function isOwner(address owner) public view returns (bool) {
        return owner != SENTINEL_OWNERS && owners[owner] != address(0);
    }
    /// @dev Returns array of owners.
    /// @return Array of Safe owners.
    function getOwners() public view returns (address[] memory) {
        address[] memory array = new address[](ownerCount);
        // populate return array
        uint256 index = 0;
        address currentOwner = owners[SENTINEL_OWNERS];
        while (currentOwner != SENTINEL_OWNERS) {
            array[index] = currentOwner;
            currentOwner = owners[currentOwner];
            index++;
        }
        return array;
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title Enum - Collection of enums
/// @author Richard Meissner - <[email protected]>
contract Enum {
    enum Operation {Call, DelegateCall}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title EtherPaymentFallback - A contract that has a fallback to accept ether payments
/// @author Richard Meissner - <[email protected]>
contract EtherPaymentFallback {
    event SafeReceived(address indexed sender, uint256 value);
    /// @dev Fallback function accepts Ether transactions.
    receive() external payable {
        emit SafeReceived(msg.sender, msg.value);
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title SecuredTokenTransfer - Secure token transfer
/// @author Richard Meissner - <[email protected]>
contract SecuredTokenTransfer {
    /// @dev Transfers a token and returns if it was a success
    /// @param token Token that should be transferred
    /// @param receiver Receiver to whom the token should be transferred
    /// @param amount The amount of tokens that should be transferred
    function transferToken(
        address token,
        address receiver,
        uint256 amount
    ) internal returns (bool transferred) {
        // 0xa9059cbb - keccack("transfer(address,uint256)")
        bytes memory data = abi.encodeWithSelector(0xa9059cbb, receiver, amount);
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // We write the return value to scratch space.
            // See https://docs.soliditylang.org/en/v0.7.6/internals/layout_in_memory.html#layout-in-memory
            let success := call(sub(gas(), 10000), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            switch returndatasize()
                case 0 {
                    transferred := success
                }
                case 0x20 {
                    transferred := iszero(or(iszero(success), iszero(mload(0))))
                }
                default {
                    transferred := 0
                }
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title SelfAuthorized - authorizes current contract to perform actions
/// @author Richard Meissner - <[email protected]>
contract SelfAuthorized {
    function requireSelfCall() private view {
        require(msg.sender == address(this), "GS031");
    }
    modifier authorized() {
        // This is a function call as it minimized the bytecode size
        requireSelfCall();
        _;
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title SignatureDecoder - Decodes signatures that a encoded as bytes
/// @author Richard Meissner - <[email protected]>
contract SignatureDecoder {
    /// @dev divides bytes signature into `uint8 v, bytes32 r, bytes32 s`.
    /// @notice Make sure to peform a bounds check for @param pos, to avoid out of bounds access on @param signatures
    /// @param pos which signature to read. A prior bounds check of this parameter should be performed, to avoid out of bounds access
    /// @param signatures concatenated rsv signatures
    function signatureSplit(bytes memory signatures, uint256 pos)
        internal
        pure
        returns (
            uint8 v,
            bytes32 r,
            bytes32 s
        )
    {
        // The signature format is a compact form of:
        //   {bytes32 r}{bytes32 s}{uint8 v}
        // Compact means, uint8 is not padded to 32 bytes.
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let signaturePos := mul(0x41, pos)
            r := mload(add(signatures, add(signaturePos, 0x20)))
            s := mload(add(signatures, add(signaturePos, 0x40)))
            // Here we are loading the last 32 bytes, including 31 bytes
            // of 's'. There is no 'mload8' to do this.
            //
            // 'byte' is not working due to the Solidity parser, so lets
            // use the second best option, 'and'
            v := and(mload(add(signatures, add(signaturePos, 0x41))), 0xff)
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title Singleton - Base for singleton contracts (should always be first super contract)
///         This contract is tightly coupled to our proxy contract (see `proxies/GnosisSafeProxy.sol`)
/// @author Richard Meissner - <[email protected]>
contract Singleton {
    // singleton always needs to be first declared variable, to ensure that it is at the same location as in the Proxy contract.
    // It should also always be ensured that the address is stored alone (uses a full word)
    address private singleton;
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title StorageAccessible - generic base contract that allows callers to access all internal storage.
/// @notice See https://github.com/gnosis/util-contracts/blob/bb5fe5fb5df6d8400998094fb1b32a178a47c3a1/contracts/StorageAccessible.sol
contract StorageAccessible {
    /**
     * @dev Reads `length` bytes of storage in the currents contract
     * @param offset - the offset in the current contract's storage in words to start reading from
     * @param length - the number of words (32 bytes) of data to read
     * @return the bytes that were read.
     */
    function getStorageAt(uint256 offset, uint256 length) public view returns (bytes memory) {
        bytes memory result = new bytes(length * 32);
        for (uint256 index = 0; index < length; index++) {
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let word := sload(add(offset, index))
                mstore(add(add(result, 0x20), mul(index, 0x20)), word)
            }
        }
        return result;
    }
    /**
     * @dev Performs a delegetecall on a targetContract in the context of self.
     * Internally reverts execution to avoid side effects (making it static).
     *
     * This method reverts with data equal to `abi.encode(bool(success), bytes(response))`.
     * Specifically, the `returndata` after a call to this method will be:
     * `success:bool || response.length:uint256 || response:bytes`.
     *
     * @param targetContract Address of the contract containing the code to execute.
     * @param calldataPayload Calldata that should be sent to the target contract (encoded method name and arguments).
     */
    function simulateAndRevert(address targetContract, bytes memory calldataPayload) external {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let success := delegatecall(gas(), targetContract, add(calldataPayload, 0x20), mload(calldataPayload), 0, 0)
            mstore(0x00, success)
            mstore(0x20, returndatasize())
            returndatacopy(0x40, 0, returndatasize())
            revert(0, add(returndatasize(), 0x40))
        }
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/**
 * @title GnosisSafeMath
 * @dev Math operations with safety checks that revert on error
 * Renamed from SafeMath to GnosisSafeMath to avoid conflicts
 * TODO: remove once open zeppelin update to solc 0.5.0
 */
library GnosisSafeMath {
    /**
     * @dev Multiplies two numbers, reverts on overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b);
        return c;
    }
    /**
     * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;
        return c;
    }
    /**
     * @dev Adds two numbers, reverts on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);
        return c;
    }
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
contract ISignatureValidatorConstants {
    // bytes4(keccak256("isValidSignature(bytes,bytes)")
    bytes4 internal constant EIP1271_MAGIC_VALUE = 0x20c13b0b;
}
abstract contract ISignatureValidator is ISignatureValidatorConstants {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param _data Arbitrary length data signed on the behalf of address(this)
     * @param _signature Signature byte array associated with _data
     *
     * MUST return the bytes4 magic value 0x20c13b0b when function passes.
     * MUST NOT modify state (using STATICCALL for solc < 0.5, view modifier for solc > 0.5)
     * MUST allow external calls
     */
    function isValidSignature(bytes memory _data, bytes memory _signature) public view virtual returns (bytes4);
}