// 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: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/SafeCast.sol)
pragma solidity ^0.8.0;
/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }
    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }
    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }
    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }
    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }
    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }
    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }
    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }
    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }
    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }
    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }
    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }
    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }
    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }
    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }
    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }
    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }
    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }
    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }
    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }
    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }
    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }
    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }
    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }
    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }
    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }
    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }
    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }
    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }
    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }
    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }
    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }
    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248) {
        require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits");
        return int248(value);
    }
    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240) {
        require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits");
        return int240(value);
    }
    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232) {
        require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits");
        return int232(value);
    }
    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224) {
        require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits");
        return int224(value);
    }
    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216) {
        require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits");
        return int216(value);
    }
    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208) {
        require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits");
        return int208(value);
    }
    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200) {
        require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits");
        return int200(value);
    }
    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192) {
        require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits");
        return int192(value);
    }
    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184) {
        require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits");
        return int184(value);
    }
    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176) {
        require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits");
        return int176(value);
    }
    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168) {
        require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits");
        return int168(value);
    }
    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160) {
        require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits");
        return int160(value);
    }
    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152) {
        require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits");
        return int152(value);
    }
    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144) {
        require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits");
        return int144(value);
    }
    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136) {
        require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits");
        return int136(value);
    }
    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128) {
        require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits");
        return int128(value);
    }
    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120) {
        require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits");
        return int120(value);
    }
    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112) {
        require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits");
        return int112(value);
    }
    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104) {
        require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits");
        return int104(value);
    }
    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96) {
        require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits");
        return int96(value);
    }
    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88) {
        require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits");
        return int88(value);
    }
    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80) {
        require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits");
        return int80(value);
    }
    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72) {
        require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits");
        return int72(value);
    }
    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64) {
        require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits");
        return int64(value);
    }
    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56) {
        require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits");
        return int56(value);
    }
    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48) {
        require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits");
        return int48(value);
    }
    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40) {
        require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits");
        return int40(value);
    }
    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32) {
        require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits");
        return int32(value);
    }
    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24) {
        require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits");
        return int24(value);
    }
    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16) {
        require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits");
        return int16(value);
    }
    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8) {
        require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits");
        return int8(value);
    }
    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}
// 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;
/**
 * @title This interface is a mixin for IFilteredMinterExpSettlementV<version>
 * interfaces to use when defining settlement minter interfaces.
 * @author Art Blocks Inc.
 */
interface IFilteredMinterDAExpSettlement_Mixin {
    /// Auction details cleared for project `projectId`.
    /// At time of reset, the project has had `numPurchases` purchases on this
    /// minter, with a most recent purchase price of `latestPurchasePrice`. If
    /// the number of purchases is 0, the latest purchase price will have a
    /// dummy value of 0.
    event ResetAuctionDetails(
        uint256 indexed projectId,
        uint256 numPurchases,
        uint256 latestPurchasePrice
    );
    /// sellout price updated for project `projectId`.
    /// @dev does not use generic event because likely will trigger additional
    /// actions in indexing layer
    event SelloutPriceUpdated(
        uint256 indexed _projectId,
        uint256 _selloutPrice
    );
    /// artist and admin have withdrawn revenues from settleable purchases for
    /// project `projectId`.
    /// @dev does not use generic event because likely will trigger additional
    /// actions in indexing layer
    event ArtistAndAdminRevenuesWithdrawn(uint256 indexed _projectId);
    /// receipt has an updated state
    event ReceiptUpdated(
        address indexed _purchaser,
        uint256 indexed _projectId,
        uint256 _numPurchased,
        uint256 _netPosted
    );
    /// returns latest purchase price for project `_projectId`, or 0 if no
    /// purchases have been made.
    function getProjectLatestPurchasePrice(
        uint256 _projectId
    ) external view returns (uint256 latestPurchasePrice);
    /// returns the number of settleable invocations for project `_projectId`.
    function getNumSettleableInvocations(
        uint256 _projectId
    ) external view returns (uint256 numSettleableInvocations);
    /// Returns the current excess settlement funds on project `_projectId`
    /// for address `_walletAddress`.
    function getProjectExcessSettlementFunds(
        uint256 _projectId,
        address _walletAddress
    ) external view returns (uint256 excessSettlementFundsInWei);
}
// SPDX-License-Identifier: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "./IFilteredMinterDAExpSettlement_Mixin.sol";
import "./IFilteredMinterV1.sol";
import "./IFilteredMinterDAExpV0.sol";
pragma solidity ^0.8.0;
/**
 * @title This interface combines the set of interfaces that add support for
 * a Dutch Auction with Settlement minter.
 * @author Art Blocks Inc.
 */
interface IFilteredMinterDAExpSettlementV0 is
    IFilteredMinterDAExpSettlement_Mixin,
    IFilteredMinterV1,
    IFilteredMinterDAExpV0
{
}
// 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 exponential descending auctions.
 * @author Art Blocks Inc.
 */
interface IFilteredMinterDAExpV0 is IFilteredMinterV0 {
    /// Auction details updated for project `projectId`.
    event SetAuctionDetails(
        uint256 indexed projectId,
        uint256 _auctionTimestampStart,
        uint256 _priceDecayHalfLifeSeconds,
        uint256 _startPrice,
        uint256 _basePrice
    );
    /// Auction details cleared for project `projectId`.
    event ResetAuctionDetails(uint256 indexed projectId);
    /// Maximum and minimum allowed price decay half lifes updated.
    event AuctionHalfLifeRangeSecondsUpdated(
        uint256 _minimumPriceDecayHalfLifeSeconds,
        uint256 _maximumPriceDecayHalfLifeSeconds
    );
    function minimumPriceDecayHalfLifeSeconds() external view returns (uint256);
    function maximumPriceDecayHalfLifeSeconds() external view returns (uint256);
}
// 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 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);
    // @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 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);
    // function to read the hash for a given tokenId
    function tokenIdToHash(uint256 _tokenId) external view returns (bytes32);
    // 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";
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 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/0.8.x/IMinterBaseV0.sol";
import "../../interfaces/0.8.x/IGenArt721CoreContractV3_Base.sol";
import "../../interfaces/0.8.x/IGenArt721CoreContractV3.sol";
import "../../interfaces/0.8.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/0.8.x/IGenArt721CoreContractV3_Base.sol";
import "../../../interfaces/0.8.x/IMinterFilterV0.sol";
import "../../../interfaces/0.8.x/IFilteredMinterDAExpSettlementV0.sol";
import "../MinterBase_v0_1_1.sol";
import "@openzeppelin-4.7/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin-4.7/contracts/utils/math/SafeCast.sol";
pragma solidity 0.8.17;
/**
 * @title Filtered Minter contract that allows tokens to be minted with ETH.
 * Pricing is achieved using an automated Dutch-auction mechanism, with a
 * settlement mechanism for tokens purchased before the auction ends.
 * 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 core contract's Admin
 * ACL contract and a project's artist. 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.
 * Additionally, the purchaser of a token has some trust assumptions regarding
 * settlement, beyond typical minter Art Blocks trust assumptions. In general,
 * Artists and Admin are trusted to not abuse their powers in a way that
 * would artifically inflate the sellout price of a project. They are
 * incentivized to not do so, as it would diminish their reputation and
 * ability to sell future projects. Agreements between Admin and Artist
 * may or may not be in place to further dissuade artificial inflation of an
 * auction's sellout price.
 * ----------------------------------------------------------------------------
 * The following functions are restricted to the core contract's Admin ACL
 * contract:
 * - setAllowablePriceDecayHalfLifeRangeSeconds (note: this range is only
 *   enforced when creating new auctions)
 * - resetAuctionDetails (note: this will prevent minting until a new auction
 *   is created)
 * - adminEmergencyReduceSelloutPrice
 * ----------------------------------------------------------------------------
 * The following functions are restricted to a project's artist or the core
 * contract's Admin ACL contract:
 * - withdrawArtistAndAdminRevenues (note: this may only be called after an
 *   auction has sold out or has reached base price)
 * ----------------------------------------------------------------------------
 * The following functions are restricted to a project's artist:
 * - setAuctionDetails (note: this may only be called when there is no active
 *   auction, and must start at a price less than or equal to any previously
 *   made purchases)
 * ----------------------------------------------------------------------------
 * Additional admin and artist privileged roles may be described on other
 * contracts that this minter integrates with.
 *
 * @dev Note that while this minter makes use of `block.timestamp` and it is
 * technically possible that this value is manipulated by block producers via
 * denial of service (in PoS), such manipulation will not have material impact
 * on the price values of this minter given the business practices for how
 * pricing is congfigured for this minter and that variations on the order of
 * less than a minute should not meaningfully impact price given the minimum
 * allowable price decay rate that this minter intends to support.
 */
contract MinterDAExpSettlementV1 is
    ReentrancyGuard,
    MinterBase,
    IFilteredMinterDAExpSettlementV0
{
    using SafeCast for uint256;
    /// 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 = "MinterDAExpSettlementV1";
    uint256 constant ONE_MILLION = 1_000_000;
    struct ProjectConfig {
        // on this minter, hasMaxBeenInvoked is updated only during every
        // purchase, and is only true if this minter minted the final token.
        // this enables the minter to know when a sellout price is greater than
        // the auction's base price.
        bool maxHasBeenInvoked;
        // set to true only after artist + admin revenues have been collected
        bool auctionRevenuesCollected;
        // number of tokens minted that have potential of future settlement.
        // max uint24 > 16.7 million tokens > 1 million tokens/project max
        uint24 numSettleableInvocations;
        // max uint64 ~= 1.8e19 sec ~= 570 billion years
        uint64 timestampStart;
        uint64 priceDecayHalfLifeSeconds;
        // Prices are packed internally as uint128, resulting in a maximum
        // allowed price of ~3.4e20 ETH. This is many orders of magnitude
        // greater than current ETH supply.
        uint128 startPrice;
        // base price is non-zero for all configured auctions on this minter
        uint128 basePrice;
        // This value is only zero if no purchases have been made on this
        // minter.
        // When non-zero, this value is used as a reference when an auction is
        // reset by admin, and then a new auction is configured by an artist.
        // In that case, the new auction will be required to have a starting
        // price less than or equal to this value, if one or more purchases
        // have been made on this minter.
        uint256 latestPurchasePrice;
    }
    mapping(uint256 => ProjectConfig) public projectConfig;
    /// Minimum price decay half life: price must decay with a half life of at
    /// least this amount (must cut in half at least every N seconds).
    uint256 public minimumPriceDecayHalfLifeSeconds = 300; // 5 minutes
    /// Maximum price decay half life: price may decay with a half life of no
    /// more than this amount (may cut in half at no more than every N seconds).
    uint256 public maximumPriceDecayHalfLifeSeconds = 3600; // 60 minutes
    struct Receipt {
        // max uint232 allows for > 1e51 ETH (much more than max supply)
        uint232 netPosted;
        // max uint24 still allows for > max project supply of 1 million tokens
        uint24 numPurchased;
    }
    /// user address => project ID => receipt
    mapping(address => mapping(uint256 => Receipt)) receipts;
    // modifier to restrict access to only AdminACL or the artist
    modifier onlyCoreAdminACLOrArtist(uint256 _projectId, bytes4 _selector) {
        require(
            (msg.sender ==
                genArtCoreContract_Base.projectIdToArtistAddress(_projectId)) ||
                (
                    genArtCoreContract_Base.adminACLAllowed(
                        msg.sender,
                        address(this),
                        _selector
                    )
                ),
            "Only Artist or Admin ACL"
        );
        _;
    }
    // modifier to restrict access to only AdminACL allowed calls
    // @dev defers which ACL contract is used to the core contract
    modifier onlyCoreAdminACL(bytes4 _selector) {
        require(
            genArtCoreContract_Base.adminACLAllowed(
                msg.sender,
                address(this),
                _selector
            ),
            "Only Core AdminACL allowed"
        );
        _;
    }
    modifier onlyArtist(uint256 _projectId) {
        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 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 This function is not implemented on this minter, and exists only
     * for interface conformance reasons. This minter checks if max invocations
     * have been reached during every purchase to determine if a sellout has
     * occurred. Therefore, the local caching of max invocations is not
     * beneficial or necessary.
     */
    function setProjectMaxInvocations(uint256 /*_projectId*/) external pure {
        // not implemented because maxInvocations must be checked during every mint
        // to know if final price should be set
        revert(
            "setProjectMaxInvocations not implemented - updated during every mint"
        );
    }
    /**
     * @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 while being minted with this minter?
     * 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. A false negative will only result in a gas cost increase,
     * since the core contract will still enforce max invocations during during
     * minting. A false negative will also only occur if the max invocations
     * was either reduced on the core contract to equal current invocations, or
     * if the max invocations was reached by minting on a different minter.
     * In both of these cases, we expect the net purchase price (after
     * settlement) shall be the base price of the project's auction. This
     * prevents an artist from benefiting by reducing max invocations on the
     * core mid-auction, or by minting on a different minter.
     * Note that if an artist wishes to reduce the max invocations on the core
     * to something less than the current invocations, but more than max
     * invocations (with the hope of increasing the sellout price), an admin
     * function is provided to manually reduce the sellout price to a lower
     * value, if desired, in the `adminEmergencyReduceSelloutPrice`
     * function.
     * @param _projectId projectId to be queried
     *
     */
    function projectMaxHasBeenInvoked(
        uint256 _projectId
    ) external view returns (bool) {
        return projectConfig[_projectId].maxHasBeenInvoked;
    }
    /**
     * @notice projectId => auction parameters
     */
    function projectAuctionParameters(
        uint256 _projectId
    )
        external
        view
        returns (
            uint256 timestampStart,
            uint256 priceDecayHalfLifeSeconds,
            uint256 startPrice,
            uint256 basePrice
        )
    {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        return (
            _projectConfig.timestampStart,
            _projectConfig.priceDecayHalfLifeSeconds,
            _projectConfig.startPrice,
            _projectConfig.basePrice
        );
    }
    /**
     * @notice Sets the minimum and maximum values that are settable for
     * `_priceDecayHalfLifeSeconds` across all projects.
     * @param _minimumPriceDecayHalfLifeSeconds Minimum price decay half life
     * (in seconds).
     * @param _maximumPriceDecayHalfLifeSeconds Maximum price decay half life
     * (in seconds).
     */
    function setAllowablePriceDecayHalfLifeRangeSeconds(
        uint256 _minimumPriceDecayHalfLifeSeconds,
        uint256 _maximumPriceDecayHalfLifeSeconds
    )
        external
        onlyCoreAdminACL(
            this.setAllowablePriceDecayHalfLifeRangeSeconds.selector
        )
    {
        require(
            _maximumPriceDecayHalfLifeSeconds >
                _minimumPriceDecayHalfLifeSeconds,
            "Maximum half life must be greater than minimum"
        );
        require(
            _minimumPriceDecayHalfLifeSeconds > 0,
            "Half life of zero not allowed"
        );
        minimumPriceDecayHalfLifeSeconds = _minimumPriceDecayHalfLifeSeconds;
        maximumPriceDecayHalfLifeSeconds = _maximumPriceDecayHalfLifeSeconds;
        emit AuctionHalfLifeRangeSecondsUpdated(
            _minimumPriceDecayHalfLifeSeconds,
            _maximumPriceDecayHalfLifeSeconds
        );
    }
    ////// Auction Functions
    /**
     * @notice Sets auction details for project `_projectId`.
     * @param _projectId Project ID to set auction details for.
     * @param _auctionTimestampStart Timestamp at which to start the auction.
     * @param _priceDecayHalfLifeSeconds The half life with which to decay the
     *  price (in seconds).
     * @param _startPrice Price at which to start the auction, in Wei.
     * If a previous auction existed on this minter and at least one settleable
     * purchase has been made, this value must be less than or equal to the
     * price when the previous auction was paused. This enforces an overall
     * monatonically decreasing auction. Must be greater than or equal to
     * max(uint128) for internal storage packing purposes.
     * @param _basePrice Resting price of the auction, in Wei. Must be greater
     * than or equal to max(uint128) for internal storage packing purposes.
     * @dev Note that setting the auction price explicitly to `0` is
     * intentionally not allowed. This allows the minter to use the assumption
     * that a price of `0` indicates that the auction is not configured.
     * @dev Note that prices must be <= max(128) for internal storage packing
     * efficiency purposes only. This function's interface remains unchanged
     * for interface conformance purposes.
     */
    function setAuctionDetails(
        uint256 _projectId,
        uint256 _auctionTimestampStart,
        uint256 _priceDecayHalfLifeSeconds,
        uint256 _startPrice,
        uint256 _basePrice
    ) external onlyArtist(_projectId) {
        // CHECKS
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        require(
            _projectConfig.timestampStart == 0 ||
                block.timestamp < _projectConfig.timestampStart,
            "No modifications mid-auction"
        );
        require(
            block.timestamp < _auctionTimestampStart,
            "Only future auctions"
        );
        require(
            _startPrice > _basePrice,
            "Auction start price must be greater than auction end price"
        );
        // require _basePrice is non-zero to simplify logic of this minter
        require(_basePrice > 0, "Base price must be non-zero");
        // If previous purchases have been made, require monotonically
        // decreasing purchase prices to preserve settlement and revenue
        // claiming logic. Since base price is always non-zero, if
        // latestPurchasePrice is zero, then no previous purchases have been
        // made, and startPrice may be set to any value.
        require(
            _projectConfig.latestPurchasePrice == 0 || // never purchased
                _startPrice <= _projectConfig.latestPurchasePrice,
            "Auction start price must be <= latest purchase price"
        );
        require(
            (_priceDecayHalfLifeSeconds >= minimumPriceDecayHalfLifeSeconds) &&
                (_priceDecayHalfLifeSeconds <=
                    maximumPriceDecayHalfLifeSeconds),
            "Price decay half life must fall between min and max allowable values"
        );
        // EFFECTS
        _projectConfig.timestampStart = _auctionTimestampStart.toUint64();
        _projectConfig.priceDecayHalfLifeSeconds = _priceDecayHalfLifeSeconds
            .toUint64();
        _projectConfig.startPrice = _startPrice.toUint128();
        _projectConfig.basePrice = _basePrice.toUint128();
        emit SetAuctionDetails(
            _projectId,
            _auctionTimestampStart,
            _priceDecayHalfLifeSeconds,
            _startPrice,
            _basePrice
        );
    }
    /**
     * @notice Resets auction details for project `_projectId`, zero-ing out all
     * relevant auction fields. Not intended to be used in normal auction
     * operation, but rather only in case of the need to reset an ongoing
     * auction. An expected time this might occur would be when a frontend
     * issue was occuring, and many typical users are actively being prevented
     * from easily minting (even though minting would technically be possible
     * directly from the contract).
     * This function is only callable by the core admin during an active
     * auction, before revenues have been collected.
     * The price at the time of the reset will be the maximum starting price
     * when re-configuring the next auction if one or more settleable purchases
     * have been made.
     * This is to ensure that purchases up through the block that this is
     * called on will remain settleable, and that revenue claimed does not
     * surpass (payments - excess_settlement_funds) for a given project.
     * @param _projectId Project ID to set auction details for.
     */
    function resetAuctionDetails(
        uint256 _projectId
    ) external onlyCoreAdminACL(this.resetAuctionDetails.selector) {
        // CHECKS
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        require(_projectConfig.startPrice != 0, "Auction must be configured");
        // no reset after revenues collected, since that solidifies amount due
        require(
            !_projectConfig.auctionRevenuesCollected,
            "Only before revenues collected"
        );
        // EFFECTS
        // reset to initial values
        _projectConfig.timestampStart = 0;
        _projectConfig.priceDecayHalfLifeSeconds = 0;
        _projectConfig.startPrice = 0;
        _projectConfig.basePrice = 0;
        // Since auction revenues have not been collected, we can safely assume
        // that numSettleableInvocations is the number of purchases made on
        // this minter. A dummy value of 0 is used for latest purchase price if
        // no purchases have been made.
        emit ResetAuctionDetails(
            _projectId,
            _projectConfig.numSettleableInvocations,
            _projectConfig.latestPurchasePrice
        );
    }
    /**
     * @notice This represents an admin stepping in and reducing the sellout
     * price of an auction. This is only callable by the core admin, only
     * after the auction is complete, but before project revenues are
     * withdrawn.
     * This is only intended to be used in the case where for some reason,
     * whether malicious or accidental, the sellout price was too high.
     * Examples of this include:
     *  - The artist reducing a project's maxInvocations on the core contract
     *    after an auction has started, but before it ends, eliminating the
     *    ability of purchasers to fairly determine market price under the
     *    original, expected auction parameters.
     *  - Any other reason the admin deems to be a valid reason to reduce the
     *    sellout price of an auction, prior to marking it as valid.
     * @param _projectId Project ID to reduce auction sellout price for.
     * @param _newSelloutPrice New sellout price to set for the auction. Must
     * be less than the current sellout price.
     */
    function adminEmergencyReduceSelloutPrice(
        uint256 _projectId,
        uint256 _newSelloutPrice
    )
        external
        onlyCoreAdminACL(this.adminEmergencyReduceSelloutPrice.selector)
    {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        require(_projectConfig.maxHasBeenInvoked, "Auction must be complete");
        // @dev no need to check that auction max invocations has been reached,
        // because if it was, the sellout price will be zero, and the following
        // check will fail.
        require(
            _newSelloutPrice < _projectConfig.latestPurchasePrice,
            "May only reduce sellout price"
        );
        require(
            _newSelloutPrice >= _projectConfig.basePrice,
            "May only reduce sellout price to base price or greater"
        );
        // ensure latestPurchasePrice is non-zero if any purchases on minter
        // @dev only possible to fail this if auction is in a reset state
        require(_newSelloutPrice > 0, "Only sellout prices > 0");
        require(
            !_projectConfig.auctionRevenuesCollected,
            "Only before revenues collected"
        );
        _projectConfig.latestPurchasePrice = _newSelloutPrice;
        emit SelloutPriceUpdated(_projectId, _newSelloutPrice);
    }
    /**
     * @notice This withdraws project revenues for the artist and admin.
     * This function is only callable by the artist or admin, and only after
     * one of the following is true:
     * - the auction has sold out above base price
     * - the auction has reached base price
     * Note that revenues are not claimable if in a temporary state after
     * an auction is reset.
     * Revenues may only be collected a single time per project.
     * After revenues are collected, auction parameters will never be allowed
     * to be reset, and excess settlement funds will become immutable and fully
     * deterministic.
     */
    function withdrawArtistAndAdminRevenues(
        uint256 _projectId
    )
        external
        nonReentrant
        onlyCoreAdminACLOrArtist(
            _projectId,
            this.withdrawArtistAndAdminRevenues.selector
        )
    {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        // CHECKS
        // require revenues to not have already been collected
        require(
            !_projectConfig.auctionRevenuesCollected,
            "Revenues already collected"
        );
        // get the current net price of the auction - reverts if no auction
        // is configured.
        // @dev _getPrice is guaranteed <= _projectConfig.latestPurchasePrice,
        // since this minter enforces monotonically decreasing purchase prices.
        uint256 _price = _getPrice(_projectId);
        // if the price is not base price, require that the auction have
        // reached max invocations. This prevents premature withdrawl
        // before final auction price is possible to know.
        if (_price != _projectConfig.basePrice) {
            // prefer to use locally cached value of maxHasBeenInvoked, which
            // is only updated when a purchase is made. This is to handle the
            // case where an artist reduced max invocations to current
            // invocations on the core contract mid-auction. In that case, the
            // the following _projectConfig.maxHasBeenInvoked check will fail
            // (only a local cache is used). This is a valid state, and in that
            // somewhat suspicious case, the artist must wait until the auction
            // reaches base price before withdrawing funds, at which point the
            // latestPurchasePrice will be set to base price, maximizing
            // purchaser excess settlement amounts, and minimizing artist/admin
            // revenue.
            require(
                _projectConfig.maxHasBeenInvoked,
                "Active auction not yet sold out"
            );
        } else {
            // update the latest purchase price to the base price, to ensure
            // the base price is used for all future settlement calculations
            _projectConfig.latestPurchasePrice = _projectConfig.basePrice;
        }
        // EFFECTS
        _projectConfig.auctionRevenuesCollected = true;
        // if the price is base price, the auction is valid and may be claimed
        // calculate the artist and admin revenues (no check requuired)
        uint256 netRevenues = _projectConfig.numSettleableInvocations * _price;
        // INTERACTIONS
        splitRevenuesETH(_projectId, netRevenues, genArt721CoreAddress);
        emit ArtistAndAdminRevenuesWithdrawn(_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 during every
        // purchase to reduce gas consumption and enable recording of sellout
        // price, 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"
        );
        // _getPrice reverts if auction is unconfigured or has not started
        uint256 currentPriceInWei = _getPrice(_projectId);
        // EFFECTS
        // update the purchaser's receipt and require sufficient net payment
        Receipt storage receipt = receipts[msg.sender][_projectId];
        // in memory copy + update
        uint256 netPosted = receipt.netPosted + msg.value;
        uint256 numPurchased = receipt.numPurchased + 1;
        // require sufficient payment on project
        require(
            netPosted >= numPurchased * currentPriceInWei,
            "Must send minimum value to mint"
        );
        // update Receipt in storage
        // @dev overflow checks are not required since the added values cannot
        // be enough to overflow due to maximum invocations or supply of ETH
        receipt.netPosted = uint232(netPosted);
        receipt.numPurchased = uint24(numPurchased);
        // emit event indicating new receipt state
        emit ReceiptUpdated(msg.sender, _projectId, numPurchased, netPosted);
        // update latest purchase price (on this minter) in storage
        // @dev this is used to enforce monotonically decreasing purchase price
        // across multiple auctions
        _projectConfig.latestPurchasePrice = currentPriceInWei;
        tokenId = minterFilter.mint(_to, _projectId, msg.sender);
        // Note that this requires that the core contract's maxInvocations
        // be accurate to ensure that the minters maxHasBeenInvoked is
        // accurate, so we get the value from the core contract directly.
        uint256 maxInvocations;
        (, maxInvocations, , , , ) = genArtCoreContract_Base.projectStateData(
            _projectId
        );
        // okay if this underflows because if statement will always eval false.
        // this is only for gas optimization and recording sellout price in
        // an event (core enforces maxInvocations).
        unchecked {
            if (tokenId % ONE_MILLION == maxInvocations - 1) {
                _projectConfig.maxHasBeenInvoked = true;
                emit SelloutPriceUpdated(_projectId, currentPriceInWei);
            }
        }
        // INTERACTIONS
        if (_projectConfig.auctionRevenuesCollected) {
            // if revenues have been collected, split funds immediately.
            // @dev note that we are guaranteed to be at auction base price,
            // since we know we didn't sellout prior to this tx.
            // note that we don't refund msg.sender here, since a separate
            // settlement mechanism is provided on this minter, unrelated to
            // msg.value
            splitRevenuesETH(
                _projectId,
                currentPriceInWei,
                genArt721CoreAddress
            );
        } else {
            // increment the number of settleable invocations that will be
            // claimable by the artist and admin once auction is validated.
            // do not split revenue here since will be claimed at a later time.
            _projectConfig.numSettleableInvocations++;
        }
        return tokenId;
    }
    /**
     * @notice Reclaims the sender's payment above current settled price for
     * project `_projectId`. The current settled price is the the price paid
     * for the most recently purchased token, or the base price if the artist
     * has withdrawn revenues after the auction reached base price.
     * This function is callable at any point, but is expected to typically be
     * called after auction has sold out above base price or after the auction
     * has been purchased at base price. This minimizes the amount of gas
     * required to send all excess settlement funds to the sender.
     * Sends excess settlement funds to msg.sender.
     * @param _projectId Project ID to reclaim excess settlement funds on.
     */
    function reclaimProjectExcessSettlementFunds(uint256 _projectId) external {
        reclaimProjectExcessSettlementFundsTo(payable(msg.sender), _projectId);
    }
    /**
     * @notice Reclaims the sender's payment above current settled price for
     * project `_projectId`. The current settled price is the the price paid
     * for the most recently purchased token, or the base price if the artist
     * has withdrawn revenues after the auction reached base price.
     * This function is callable at any point, but is expected to typically be
     * called after auction has sold out above base price or after the auction
     * has been purchased at base price. This minimizes the amount of gas
     * required to send all excess settlement funds.
     * Sends excess settlement funds to address `_to`.
     * @param _to Address to send excess settlement funds to.
     * @param _projectId Project ID to reclaim excess settlement funds on.
     */
    function reclaimProjectExcessSettlementFundsTo(
        address payable _to,
        uint256 _projectId
    ) public nonReentrant {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        Receipt storage receipt = receipts[msg.sender][_projectId];
        uint256 numPurchased = receipt.numPurchased;
        // CHECKS
        // input validation
        require(_to != address(0), "No claiming to the zero address");
        // require that a user has purchased at least one token on this project
        require(numPurchased > 0, "No purchases made by this address");
        // get the latestPurchasePrice, which returns the sellout price if the
        // auction sold out before reaching base price, or returns the base
        // price if auction has reached base price and artist has withdrawn
        // revenues.
        // @dev if user is eligible for a reclaiming, they have purchased a
        // token, therefore we are guaranteed to have a populated
        // latestPurchasePrice
        uint256 currentSettledTokenPrice = _projectConfig.latestPurchasePrice;
        // EFFECTS
        // calculate the excess settlement funds amount
        // implicit overflow/underflow checks in solidity ^0.8
        uint256 requiredAmountPosted = numPurchased * currentSettledTokenPrice;
        uint256 excessSettlementFunds = receipt.netPosted -
            requiredAmountPosted;
        // update Receipt in storage
        receipt.netPosted = requiredAmountPosted.toUint232();
        // emit event indicating new receipt state
        emit ReceiptUpdated(
            msg.sender,
            _projectId,
            numPurchased,
            requiredAmountPosted
        );
        // INTERACTIONS
        bool success_;
        (success_, ) = _to.call{value: excessSettlementFunds}("");
        require(success_, "Reclaiming failed");
    }
    /**
     * @notice Reclaims the sender's payment above current settled price for
     * projects in `_projectIds`. The current settled price is the the price
     * paid for the most recently purchased token, or the base price if the
     * artist has withdrawn revenues after the auction reached base price.
     * This function is callable at any point, but is expected to typically be
     * called after auction has sold out above base price or after the auction
     * has been purchased at base price. This minimizes the amount of gas
     * required to send all excess settlement funds to the sender.
     * Sends total of all excess settlement funds to msg.sender in a single
     * chunk. Entire transaction reverts if any excess settlement calculation
     * fails.
     * @param _projectIds Array of project IDs to reclaim excess settlement
     * funds on.
     */
    function reclaimProjectsExcessSettlementFunds(
        uint256[] calldata _projectIds
    ) external {
        reclaimProjectsExcessSettlementFundsTo(
            payable(msg.sender),
            _projectIds
        );
    }
    /**
     * @notice Reclaims the sender's payment above current settled price for
     * projects in `_projectIds`. The current settled price is the the price
     * paid for the most recently purchased token, or the base price if the
     * artist has withdrawn revenues after the auction reached base price.
     * This function is callable at any point, but is expected to typically be
     * called after auction has sold out above base price or after the auction
     * has been purchased at base price. This minimizes the amount of gas
     * required to send all excess settlement funds to the sender.
     * Sends total of all excess settlement funds to `_to` in a single
     * chunk. Entire transaction reverts if any excess settlement calculation
     * fails.
     * @param _to Address to send excess settlement funds to.
     * @param _projectIds Array of project IDs to reclaim excess settlement
     * funds on.
     */
    function reclaimProjectsExcessSettlementFundsTo(
        address payable _to,
        uint256[] memory _projectIds
    ) public nonReentrant {
        // CHECKS
        // input validation
        require(_to != address(0), "No claiming to the zero address");
        // EFFECTS
        // for each project, tally up the excess settlement funds and update
        // the receipt in storage
        uint256 excessSettlementFunds;
        uint256 projectIdsLength = _projectIds.length;
        for (uint256 i; i < projectIdsLength; ) {
            uint256 projectId = _projectIds[i];
            ProjectConfig storage _projectConfig = projectConfig[projectId];
            Receipt storage receipt = receipts[msg.sender][projectId];
            uint256 numPurchased = receipt.numPurchased;
            // input validation
            // require that a user has purchased at least one token on this project
            require(numPurchased > 0, "No purchases made by this address");
            // get the latestPurchasePrice, which returns the sellout price if the
            // auction sold out before reaching base price, or returns the base
            // price if auction has reached base price and artist has withdrawn
            // revenues.
            // @dev if user is eligible for a claim, they have purchased a token,
            // therefore we are guaranteed to have a populated
            // latestPurchasePrice
            uint256 currentSettledTokenPrice = _projectConfig
                .latestPurchasePrice;
            // calculate the excessSettlementFunds amount
            // implicit overflow/underflow checks in solidity ^0.8
            uint256 requiredAmountPosted = numPurchased *
                currentSettledTokenPrice;
            excessSettlementFunds += (receipt.netPosted - requiredAmountPosted);
            // reduce the netPosted (in storage) to value after excess settlement
            // funds deducted
            receipt.netPosted = requiredAmountPosted.toUint232();
            // emit event indicating new receipt state
            emit ReceiptUpdated(
                msg.sender,
                projectId,
                numPurchased,
                requiredAmountPosted
            );
            // gas efficiently increment i
            // won't overflow due to for loop, as well as gas limts
            unchecked {
                ++i;
            }
        }
        // INTERACTIONS
        // send excess settlement funds in a single chunk for all
        // projects
        bool success_;
        (success_, ) = _to.call{value: excessSettlementFunds}("");
        require(success_, "Reclaiming failed");
    }
    /**
     * @notice Gets price of minting a token on project `_projectId` given
     * the project's AuctionParameters and current block timestamp.
     * Reverts if auction has not yet started or auction is unconfigured.
     * Returns auction last purchase price if auction sold out before reaching
     * base price.
     * @param _projectId Project ID to get price of token for.
     * @return current price of token in Wei
     * @dev This method calculates price decay using a linear interpolation
     * of exponential decay based on the artist-provided half-life for price
     * decay, `_priceDecayHalfLifeSeconds`.
     */
    function _getPrice(uint256 _projectId) private view returns (uint256) {
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        // if auction sold out on this minter, return the latest purchase
        // price (which is the sellout price). This is the price that is due
        // after an auction is complete.
        if (_projectConfig.maxHasBeenInvoked) {
            return _projectConfig.latestPurchasePrice;
        }
        // otherwise calculate price based on current block timestamp and
        // auction configuration (will revert if auction has not started)
        // move parameters to memory if used more than once
        uint256 _timestampStart = uint256(_projectConfig.timestampStart);
        uint256 _priceDecayHalfLifeSeconds = uint256(
            _projectConfig.priceDecayHalfLifeSeconds
        );
        uint256 _basePrice = _projectConfig.basePrice;
        require(block.timestamp > _timestampStart, "Auction not yet started");
        require(_priceDecayHalfLifeSeconds > 0, "Only configured auctions");
        uint256 decayedPrice = _projectConfig.startPrice;
        uint256 elapsedTimeSeconds;
        unchecked {
            // already checked that block.timestamp > _timestampStart above
            elapsedTimeSeconds = block.timestamp - _timestampStart;
        }
        // Divide by two (via bit-shifting) for the number of entirely completed
        // half-lives that have elapsed since auction start time.
        unchecked {
            // already required _priceDecayHalfLifeSeconds > 0
            decayedPrice >>= elapsedTimeSeconds / _priceDecayHalfLifeSeconds;
        }
        // Perform a linear interpolation between partial half-life points, to
        // approximate the current place on a perfect exponential decay curve.
        unchecked {
            // value of expression is provably always less than decayedPrice,
            // so no underflow is possible when the subtraction assignment
            // operator is used on decayedPrice.
            decayedPrice -=
                (decayedPrice *
                    (elapsedTimeSeconds % _priceDecayHalfLifeSeconds)) /
                _priceDecayHalfLifeSeconds /
                2;
        }
        if (decayedPrice < _basePrice) {
            // Price may not decay below stay `basePrice`.
            return _basePrice;
        }
        return decayedPrice;
    }
    /**
     * @notice Gets the current excess settlement funds on project `_projectId`
     * for address `_walletAddress`. The returned value is expected to change
     * throughtout an auction, since the latest purchase price is used when
     * determining excess settlement funds.
     * A user may claim excess settlement funds by calling the function
     * `reclaimProjectExcessSettlementFunds(_projectId)`.
     * @param _projectId Project ID to query.
     * @param _walletAddress Account address for which the excess posted funds
     * is being queried.
     * @return excessSettlementFundsInWei Amount of excess settlement funds, in
     * wei
     */
    function getProjectExcessSettlementFunds(
        uint256 _projectId,
        address _walletAddress
    ) external view returns (uint256 excessSettlementFundsInWei) {
        // input validation
        require(_walletAddress != address(0), "No zero address");
        // load struct from storage
        ProjectConfig storage _projectConfig = projectConfig[_projectId];
        Receipt storage receipt = receipts[_walletAddress][_projectId];
        // require that a user has purchased at least one token on this project
        require(receipt.numPurchased > 0, "No purchases made by this address");
        // get the latestPurchasePrice, which returns the sellout price if the
        // auction sold out before reaching base price, or returns the base
        // price if auction has reached base price and artist has withdrawn
        // revenues.
        // @dev if user is eligible for a reclaiming, they have purchased a
        // token, therefore we are guaranteed to have a populated
        // latestPurchasePrice
        uint256 currentSettledTokenPrice = _projectConfig.latestPurchasePrice;
        // EFFECTS
        // calculate the excess settlement funds amount and return
        // implicit overflow/underflow checks in solidity ^0.8
        uint256 requiredAmountPosted = receipt.numPurchased *
            currentSettledTokenPrice;
        excessSettlementFundsInWei = receipt.netPosted - requiredAmountPosted;
        return excessSettlementFundsInWei;
    }
    /**
     * @notice Gets the latest purchase price for project `_projectId`, or 0 if
     * no purchases have been made.
     */
    function getProjectLatestPurchasePrice(
        uint256 _projectId
    ) external view returns (uint256 latestPurchasePrice) {
        return projectConfig[_projectId].latestPurchasePrice;
    }
    /**
     * @notice Gets the number of settleable invocations for project `_projectId`.
     */
    function getNumSettleableInvocations(
        uint256 _projectId
    ) external view returns (uint256 numSettleableInvocations) {
        return projectConfig[_projectId].numSettleableInvocations;
    }
    /**
     * @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 project's auction parameters have been
     * configured on this minter
     * @return tokenPriceInWei current price of token on this minter - invalid
     * if auction 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.startPrice > 0);
        if (block.timestamp <= _projectConfig.timestampStart) {
            // Provide a reasonable value for `tokenPriceInWei` when it would
            // otherwise revert, using the starting price before auction starts.
            tokenPriceInWei = _projectConfig.startPrice;
        } else if (_projectConfig.startPrice == 0) {
            // In the case of unconfigured auction, return price of zero when
            // it would otherwise revert
            tokenPriceInWei = 0;
        } else {
            tokenPriceInWei = _getPrice(_projectId);
        }
        currencySymbol = "ETH";
        currencyAddress = address(0);
    }
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity 0.8.17;
// Created By: Art Blocks Inc.
import "./interfaces/0.8.x/IRandomizerV2.sol";
import "./interfaces/0.8.x/IAdminACLV0.sol";
import "./interfaces/0.8.x/IGenArt721CoreContractV3.sol";
import "./interfaces/0.8.x/IManifold.sol";
import "@openzeppelin-4.7/contracts/utils/Strings.sol";
import "@openzeppelin-4.7/contracts/access/Ownable.sol";
import "./libs/0.8.x/ERC721_PackedHashSeed.sol";
import "./libs/0.8.x/BytecodeStorage.sol";
import "./libs/0.8.x/Bytes32Strings.sol";
/**
 * @title Art Blocks 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:
 * - updateArtblocksCurationRegistryAddress
 * - updateArtblocksDependencyRegistryAddress
 * - updateArtblocksPrimarySalesAddress
 * - updateArtblocksSecondarySalesAddress
 * - updateArtblocksPrimarySalesPercentage (up to 25%)
 * - updateArtblocksSecondarySalesBPS (up to 100%)
 * - updateMinterContract
 * - updateRandomizerAddress
 * - toggleProjectIsActive
 * - addProject
 * - forbidNewProjects (forever forbidding new projects)
 * - updateDefaultBaseURI (used to initialize new project base URIs)
 * ----------------------------------------------------------------------------
 * 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.)
 * - 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 function is restricted to owner calling directly:
 * - transferOwnership
 * - renounceOwnership
 * ----------------------------------------------------------------------------
 * Additional admin and artist privileged roles may be described on minters,
 * registries, and other contracts that may interact with this core contract.
 */
contract GenArt721CoreV3 is
    ERC721_PackedHashSeed,
    Ownable,
    IGenArt721CoreContractV3
{
    using BytecodeStorage for string;
    using BytecodeStorage for address;
    using Bytes32Strings for bytes32;
    using Strings for uint256;
    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 ART_BLOCKS_MAX_PRIMARY_SALES_PERCENTAGE = 25; // 25%
    uint256 constant ART_BLOCKS_MAX_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_ARTBLOCKS_PRIMARY_SALES_ADDRESS =
        "artblocksPrimarySalesAddress";
    bytes32 constant FIELD_ARTBLOCKS_SECONDARY_SALES_ADDRESS =
        "artblocksSecondarySalesAddress";
    bytes32 constant FIELD_RANDOMIZER_ADDRESS = "randomizerAddress";
    bytes32 constant FIELD_ARTBLOCKS_CURATION_REGISTRY_ADDRESS =
        "curationRegistryAddress";
    bytes32 constant FIELD_ARTBLOCKS_DEPENDENCY_REGISTRY_ADDRESS =
        "dependencyRegistryAddress";
    bytes32 constant FIELD_ARTBLOCKS_PRIMARY_SALES_PERCENTAGE =
        "artblocksPrimaryPercentage";
    bytes32 constant FIELD_ARTBLOCKS_SECONDARY_SALES_BPS =
        "artblocksSecondaryBPS";
    // 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";
    // Art Blocks previous flagship ERC721 token addresses (for reference)
    /// Art Blocks Project ID range: [0-2]
    address public constant ART_BLOCKS_ERC721TOKEN_ADDRESS_V0 =
        0x059EDD72Cd353dF5106D2B9cC5ab83a52287aC3a;
    /// Art Blocks Project ID range: [3-373]
    address public constant ART_BLOCKS_ERC721TOKEN_ADDRESS_V1 =
        0xa7d8d9ef8D8Ce8992Df33D8b8CF4Aebabd5bD270;
    /// Curation registry managed by Art Blocks
    address public artblocksCurationRegistryAddress;
    /// Dependency registry managed by Art Blocks
    address public artblocksDependencyRegistryAddress;
    /// current randomizer contract
    IRandomizerV2 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;
        string description;
        string website;
        string license;
        string projectBaseURI;
        bytes32 scriptTypeAndVersion;
        string aspectRatio;
        // mapping from script index to address storing script in bytecode
        mapping(uint256 => address) scriptBytecodeAddresses;
    }
    mapping(uint256 => Project) projects;
    /// 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;
    /// Art Blocks payment address for all primary sales revenues (packed)
    address payable public artblocksPrimarySalesAddress;
    /// Percentage of primary sales revenue allocated to Art Blocks (packed)
    // packed uint: max of 25, max uint8 = 255
    uint8 private _artblocksPrimarySalesPercentage = 10;
    /// Art Blocks payment address for all secondary sales royalty revenues
    address payable public artblocksSecondarySalesAddress;
    /// Basis Points of secondary sales royalties allocated to Art Blocks
    uint256 public artblocksSecondarySalesBPS = 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;
    /// version & type of this core contract
    string public constant coreVersion = "v3.0.0";
    string public constant coreType = "GenArt721CoreV3";
    /// default base URI to initialize all new project projectBaseURI values to
    string public defaultBaseURI;
    modifier onlyNonZeroAddress(address _address) {
        require(_address != address(0), "Must input non-zero address");
        _;
    }
    modifier onlyNonEmptyString(string memory _string) {
        require(bytes(_string).length != 0, "Must input non-empty string");
        _;
    }
    modifier onlyValidTokenId(uint256 _tokenId) {
        require(_exists(_tokenId), "Token ID does not exist");
        _;
    }
    modifier onlyValidProjectId(uint256 _projectId) {
        require(
            (_projectId >= startingProjectId) && (_projectId < _nextProjectId),
            "Project ID does not exist"
        );
        _;
    }
    modifier onlyUnlocked(uint256 _projectId) {
        // Note: calling `_projectUnlocked` enforces that the `_projectId`
        //       passed in is valid.`
        require(_projectUnlocked(_projectId), "Only if unlocked");
        _;
    }
    modifier onlyAdminACL(bytes4 _selector) {
        require(
            adminACLAllowed(msg.sender, address(this), _selector),
            "Only Admin ACL allowed"
        );
        _;
    }
    modifier onlyArtist(uint256 _projectId) {
        require(
            msg.sender == projectIdToFinancials[_projectId].artistAddress,
            "Only artist"
        );
        _;
    }
    modifier onlyArtistOrAdminACL(uint256 _projectId, bytes4 _selector) {
        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.
     */
    modifier onlyAdminACLOrRenouncedArtist(
        uint256 _projectId,
        bytes4 _selector
    ) {
        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.
     * @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 _randomizerContract,
        address _adminACLContract,
        uint248 _startingProjectId
    )
        ERC721_PackedHashSeed(_tokenName, _tokenSymbol)
        onlyNonZeroAddress(_randomizerContract)
    {
        // record contracts starting project ID
        // casting-up is safe
        startingProjectId = uint256(_startingProjectId);
        _updateArtblocksPrimarySalesAddress(msg.sender);
        _updateArtblocksSecondarySalesAddress(msg.sender);
        _updateRandomizerAddress(_randomizerContract);
        // set AdminACL management contract as owner
        _transferOwnership(_adminACLContract);
        // initialize default base URI
        _updateDefaultBaseURI("https://token.artblocks.io/");
        // initialize next project ID
        _nextProjectId = _startingProjectId;
        emit PlatformUpdated(FIELD_NEXT_PROJECT_ID);
    }
    /**
     * @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
     * defined Art Blocks 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 Curation Registry contract.
     * @param _artblocksCurationRegistryAddress Address of new Curation
     * Registry.
     */
    function updateArtblocksCurationRegistryAddress(
        address _artblocksCurationRegistryAddress
    )
        external
        onlyAdminACL(this.updateArtblocksCurationRegistryAddress.selector)
        onlyNonZeroAddress(_artblocksCurationRegistryAddress)
    {
        artblocksCurationRegistryAddress = _artblocksCurationRegistryAddress;
        emit PlatformUpdated(FIELD_ARTBLOCKS_CURATION_REGISTRY_ADDRESS);
    }
    /**
     * @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 artblocksPrimarySalesAddress to
     * `_artblocksPrimarySalesAddress`.
     * @param _artblocksPrimarySalesAddress Address of new primary sales
     * payment address.
     */
    function updateArtblocksPrimarySalesAddress(
        address payable _artblocksPrimarySalesAddress
    )
        external
        onlyAdminACL(this.updateArtblocksPrimarySalesAddress.selector)
        onlyNonZeroAddress(_artblocksPrimarySalesAddress)
    {
        _updateArtblocksPrimarySalesAddress(_artblocksPrimarySalesAddress);
    }
    /**
     * @notice Updates Art Blocks secondary sales royalty payment address to
     * `_artblocksSecondarySalesAddress`.
     * @param _artblocksSecondarySalesAddress Address of new secondary sales
     * payment address.
     */
    function updateArtblocksSecondarySalesAddress(
        address payable _artblocksSecondarySalesAddress
    )
        external
        onlyAdminACL(this.updateArtblocksSecondarySalesAddress.selector)
        onlyNonZeroAddress(_artblocksSecondarySalesAddress)
    {
        _updateArtblocksSecondarySalesAddress(_artblocksSecondarySalesAddress);
    }
    /**
     * @notice Updates Art Blocks primary sales revenue percentage to
     * `artblocksPrimarySalesPercentage_`.
     * @param artblocksPrimarySalesPercentage_ New primary sales revenue
     * percentage.
     */
    function updateArtblocksPrimarySalesPercentage(
        uint256 artblocksPrimarySalesPercentage_
    )
        external
        onlyAdminACL(this.updateArtblocksPrimarySalesPercentage.selector)
    {
        require(
            artblocksPrimarySalesPercentage_ <=
                ART_BLOCKS_MAX_PRIMARY_SALES_PERCENTAGE,
            "Max of ART_BLOCKS_MAX_PRIMARY_SALES_PERCENTAGE percent"
        );
        _artblocksPrimarySalesPercentage = uint8(
            artblocksPrimarySalesPercentage_
        );
        emit PlatformUpdated(FIELD_ARTBLOCKS_PRIMARY_SALES_PERCENTAGE);
    }
    /**
     * @notice Updates Art Blocks secondary sales royalty Basis Points to
     * `_artblocksSecondarySalesBPS`.
     * @param _artblocksSecondarySalesBPS 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 updateArtblocksSecondarySalesBPS(
        uint256 _artblocksSecondarySalesBPS
    ) external onlyAdminACL(this.updateArtblocksSecondarySalesBPS.selector) {
        require(
            _artblocksSecondarySalesBPS <= ART_BLOCKS_MAX_SECONDARY_SALES_BPS,
            "Max of ART_BLOCKS_MAX_SECONDARY_SALES_BPS BPS"
        );
        artblocksSecondarySalesBPS = _artblocksSecondarySalesBPS;
        emit PlatformUpdated(FIELD_ARTBLOCKS_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 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.
        // store proposal hash on-chain, only if not automatic accept
        bool 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 cannot change during automatic accept)
            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 Art Blocks; this 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,
            "Max of ARTIST_MAX_SECONDARY_ROYALTY_PERCENTAGE 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.
     * @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
        projects[_projectId].description = _projectDescription;
        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),
            "maxInvocations may only be decreased"
        );
        require(
            _maxInvocations >= _invocations,
            "Only max invocations gte current 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.
     */
    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.
     */
    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");
        // purge old contract bytecode contract from the blockchain state
        project.scriptBytecodeAddresses[_scriptId].purgeBytecode();
        // store script in contract bytecode, replacing reference address from
        // the contract that no longer exists 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, "there are no scripts to remove");
        // purge old contract bytecode contract from the blockchain state
        project.scriptBytecodeAddresses[project.scriptCount - 1].purgeBytecode();
        // delete reference to contract address that no longer exists
        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 View function returning Art Blocks portion of primary sales, in
     * percent.
     * @return uint256 Art Blocks portion of primary sales, in percent.
     */
    function artblocksPrimarySalesPercentage() external view returns (uint256) {
        return _artblocksPrimarySalesPercentage;
    }
    /**
     * @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 Art Blocks portion 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;
        description = project.description;
        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 by
     * `artblocksSecondarySalesBPS`.
     */
    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
        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 project.scriptBytecodeAddresses[_index].readFromBytecode();
    }
    /**
     * @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 Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales payment address (now called artblocksPrimarySalesAddress).
     * @return address payable Art Blocks primary sales payment address
     */
    function artblocksAddress() external view returns (address payable) {
        return artblocksPrimarySalesAddress;
    }
    /**
     * @notice Backwards-compatible (pre-V3) function returning Art Blocks
     * primary sales percentage (now called artblocksPrimarySalesPercentage).
     * @return uint256 Art Blocks primary sales percentage
     */
    function artblocksPercentage() external view returns (uint256) {
        return _artblocksPrimarySalesPercentage;
    }
    /**
     * @notice Backwards-compatible (pre-V3) function.
     * Gets artist + artist's additional payee royalty data for token ID
     `_tokenId`.
     * WARNING: Does not include Art Blocks portion of royalties.
     * @param _tokenId Token ID to be queried.
     * @return artistAddress Artist's payment address
     * @return additionalPayee Additional payee's payment address
     * @return additionalPayeePercentage Percentage of artist revenue
     * to be sent to the additional payee's address
     * @return royaltyFeeByID Total royalty percentage to be sent to
     * combination of artist and additional payee
     * @dev Does not include Art Blocks portion of royalties.
     */
    function getRoyaltyData(uint256 _tokenId)
        external
        view
        returns (
            address artistAddress,
            address additionalPayee,
            uint256 additionalPayeePercentage,
            uint256 royaltyFeeByID
        )
    {
        uint256 projectId = tokenIdToProjectId(_tokenId);
        ProjectFinance storage projectFinance = projectIdToFinancials[
            projectId
        ];
        artistAddress = projectFinance.artistAddress;
        additionalPayee = projectFinance.additionalPayeeSecondarySales;
        additionalPayeePercentage = projectFinance
            .additionalPayeeSecondarySalesPercentage;
        royaltyFeeByID = projectFinance.secondaryMarketRoyaltyPercentage;
    }
    /**
     * @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
        onlyValidTokenId(_tokenId)
        returns (address payable[] memory recipients, uint256[] memory bps)
    {
        // initialize arrays with maximum potential length
        recipients = new address payable[](3);
        bps = new uint256[](3);
        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 artblocksBPS = artblocksSecondarySalesBPS;
        // 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 (artblocksBPS > 0) {
            recipients[payeeCount] = artblocksSecondarySalesAddress;
            bps[payeeCount++] = artblocksBPS;
        }
        // trim arrays if necessary
        if (3 > payeeCount) {
            assembly {
                let decrease := sub(3, 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 Art Blocks, Artist, and Artist's additional primary sales
     * payee given a sale price of `_price` on project `_projectId`.
     * This always returns three revenue amounts and three 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 artblocksRevenue_ amount of revenue to be sent to Art Blocks
     * @return artblocksAddress_ address to send Art Blocks 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 three addresses and three 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 artblocksRevenue_,
            address payable artblocksAddress_,
            uint256 artistRevenue_,
            address payable artistAddress_,
            uint256 additionalPayeePrimaryRevenue_,
            address payable additionalPayeePrimaryAddress_
        )
    {
        ProjectFinance storage projectFinance = projectIdToFinancials[
            _projectId
        ];
        // calculate revenues
        artblocksRevenue_ =
            (_price * uint256(_artblocksPrimarySalesPercentage)) /
            ONE_HUNDRED;
        uint256 projectFunds;
        unchecked {
            // artblocksRevenue_ is always <=25, so guaranteed to never underflow
            projectFunds = _price - artblocksRevenue_;
        }
        additionalPayeePrimaryRevenue_ =
            (projectFunds *
                projectFinance.additionalPayeePrimarySalesPercentage) /
            ONE_HUNDRED;
        unchecked {
            // projectIdToAdditionalPayeePrimarySalesPercentage is always
            // <=100, so guaranteed to never underflow
            artistRevenue_ = projectFunds - additionalPayeePrimaryRevenue_;
        }
        // set addresses from storage
        artblocksAddress_ = artblocksPrimarySalesAddress;
        if (artistRevenue_ > 0) {
            artistAddress_ = projectFinance.artistAddress;
        }
        if (additionalPayeePrimaryRevenue_ > 0) {
            additionalPayeePrimaryAddress_ = projectFinance
                .additionalPayeePrimarySales;
        }
    }
    /**
     * @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)
        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
        onlyValidTokenId(_tokenId)
        returns (string memory)
    {
        string memory _projectBaseURI = projects[tokenIdToProjectId(_tokenId)]
            .projectBaseURI;
        return string.concat(_projectBaseURI, _tokenId.toString());
    }
    /**
     * @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 Art Blocks payment address to `_artblocksPrimarySalesAddress`.
     * @param _artblocksPrimarySalesAddress New Art Blocks 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 _updateArtblocksPrimarySalesAddress(
        address _artblocksPrimarySalesAddress
    ) internal {
        artblocksPrimarySalesAddress = payable(_artblocksPrimarySalesAddress);
        emit PlatformUpdated(FIELD_ARTBLOCKS_PRIMARY_SALES_ADDRESS);
    }
    /**
     * @notice Updates Art Blocks secondary sales royalty payment address to
     * `_artblocksSecondarySalesAddress`.
     * @param _artblocksSecondarySalesAddress New Art Blocks 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 _updateArtblocksSecondarySalesAddress(
        address _artblocksSecondarySalesAddress
    ) internal {
        artblocksSecondarySalesAddress = payable(
            _artblocksSecondarySalesAddress
        );
        emit PlatformUpdated(FIELD_ARTBLOCKS_SECONDARY_SALES_ADDRESS);
    }
    /**
     * @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 = IRandomizerV2(_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
        onlyValidProjectId(_projectId)
        returns (bool)
    {
        uint256 projectCompletedTimestamp = projects[_projectId]
            .completedTimestamp;
        bool projectOpen = projectCompletedTimestamp == 0;
        return
            projectOpen ||
            (block.timestamp - projectCompletedTimestamp <
                FOUR_WEEKS_IN_SECONDS);
    }
}
// SPDX-License-Identifier: LGPL-3.0-only
// Creatd By: Art Blocks Inc.
pragma solidity ^0.8.0;
import "./IGenArt721CoreContractV3.sol";
interface IRandomizerV2 {
    // The core contract that may interact with this randomizer contract.
    function genArt721Core() external view returns (IGenArt721CoreContractV3);
    // When a core contract calls this, it can be assured that the randomizer
    // will set a bytes32 hash for tokenId `_tokenId` on the core contract.
    function assignTokenHash(uint256 _tokenId) external;
}
// 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;
import "./IAdminACLV0.sol";
/// use the Royalty Registry's IManifold interface for token royalties
import "./IManifold.sol";
interface IGenArt721CoreContractV3 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 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);
    // @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 new function in V3
    function projectStateData(uint256 _projectId)
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        );
    // @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);
    // 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);
    /**
     * @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: 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: 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 (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
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
/**
 * @title Art Blocks Script Storage Library
 * @notice Utilize contract bytecode as persistant storage for large chunks of script string data.
 *
 * @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
 *      - exposes "delete" functionality, allowing no-longer-used storage to be purged from chain state
 *      - stores the "writer" address (library user) in the deployed contract bytes, which is useful for both:
 *         a) providing necessary information for safe deletion; and
 *         b) allowing this to be introspected on-chain
 *      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.
 */
library BytecodeStorage {
    //---------------------------------------------------------------------------------------------------------------//
    // Starting Index | Size | Ending Index | Description                                                            //
    //---------------------------------------------------------------------------------------------------------------//
    // 0              | N/A  | 0            |                                                                        //
    // 0              | 72   | 72           | the bytes of the gated-cleanup-logic allowing for `selfdestruct`ion    //
    // 72             | 32   | 104          | the 32 bytes for storing the deploying contract's (0-padded) address   //
    //---------------------------------------------------------------------------------------------------------------//
    // Define the offset for where the "logic 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 internal constant DATA_OFFSET = 104;
    uint256 internal constant ADDRESS_OFFSET = 72;
    /*//////////////////////////////////////////////////////////////
                           WRITE LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Write a string to contract bytecode
     * @param _data string to be written to contract
     * @return address_ address of deployed contract with bytecode containing concat(gated-cleanup-logic, data)
     */
    function writeToBytecode(string memory _data)
        internal
        returns (address address_)
    {
        // prefix bytecode with
        bytes memory creationCode = abi.encodePacked(
            //---------------------------------------------------------------------------------------------------------------//
            // Opcode  | Opcode + Arguments  | Description  | Stack View                                                     //
            //---------------------------------------------------------------------------------------------------------------//
            // (0) 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",
            //---------------------------------------------------------------------------------------------------------------//
            // Opcode  | Opcode + Arguments  | Description  | Stack View                                                     //
            //---------------------------------------------------------------------------------------------------------------//
            // (1a) conditional logic for determing purge-gate (only the bytecode contract deployer can `selfdestruct`)
            //---------------------------------------------------------------------------------------------------------------//
            // 0x60    |  0x60_20            | PUSH1 32           | 32                                                       //
            // 0x60    |  0x60_48            | PUSH1 72 (*)       | contractOffset 32                                        //
            // 0x60    |  0x60_00            | PUSH1 0            | 0 contractOffset 32                                      //
            // 0x39    |  0x39               | CODECOPY           |                                                          //
            // 0x60    |  0x60_00            | PUSH1 0            | 0                                                        //
            // 0x51    |  0x51               | MLOAD              | byteDeployerAddress                                      //
            // 0x33    |  0x33               | CALLER             | msg.sender byteDeployerAddress                           //
            // 0x14    |  0x14               | EQ                 | (msg.sender == byteDeployerAddress)                      //
            //---------------------------------------------------------------------------------------------------------------//
            // (12 bytes: 0-11 in deployed contract)
            hex"60_20_60_48_60_00_39_60_00_51_33_14",
            //---------------------------------------------------------------------------------------------------------------//
            // (1b) load up the destination jump address for `(2a) calldata length check` logic, jump or raise `invalid` op-code
            //---------------------------------------------------------------------------------------------------------------//
            // 0x60    |  0x60_10            | PUSH1 16 (^)       | jumpDestination (msg.sender == byteDeployerAddress)      //
            // 0x57    |  0x57               | JUMPI              |                                                          //
            // 0xFE    |  0xFE               | INVALID            |                                                          //
            //---------------------------------------------------------------------------------------------------------------//
            // (4 bytes: 12-15 in deployed contract)
            hex"60_10_57_FE",
            //---------------------------------------------------------------------------------------------------------------//
            // (2a) conditional logic for determing purge-gate (only if calldata length is 1 byte)
            //---------------------------------------------------------------------------------------------------------------//
            // 0x5B    |  0x5B               | JUMPDEST (16)      |                                                          //
            // 0x60    |  0x60_01            | PUSH1 1            | 1                                                        //
            // 0x36    |  0x36               | CALLDATASIZE       | calldataSize 1                                           //
            // 0x14    |  0x14               | EQ                 | (calldataSize == 1)                                      //
            //---------------------------------------------------------------------------------------------------------------//
            // (5 bytes: 16-20 in deployed contract)
            hex"5B_60_01_36_14",
            //---------------------------------------------------------------------------------------------------------------//
            // (2b) load up the destination jump address for `(3a) calldata value check` logic, jump or raise `invalid` op-code
            //---------------------------------------------------------------------------------------------------------------//
            // 0x60    |  0x60_19            | PUSH1 25 (^)       | jumpDestination (calldataSize == 1)                      //
            // 0x57    |  0x57               | JUMPI              |                                                          //
            // 0xFE    |  0xFE               | INVALID            |                                                          //
            //---------------------------------------------------------------------------------------------------------------//
            // (4 bytes: 21-24 in deployed contract)
            hex"60_19_57_FE",
            //---------------------------------------------------------------------------------------------------------------//
            // (3a) conditional logic for determing purge-gate (only if calldata is `0xFF`)
            //---------------------------------------------------------------------------------------------------------------//
            // 0x5B    |  0x5B               | JUMPDEST (25)      |                                                          //
            // 0x60    |  0x60_00            | PUSH1 0            | 0                                                        //
            // 0x35    |  0x35               | CALLDATALOAD       | calldata                                                 //
            // 0x7F    |  0x7F_FF_00_..._00  | PUSH32 0xFF00...00 | 0xFF0...00 calldata                                      //
            // 0x14    |  0x14               | EQ                 | (0xFF00...00 == calldata)                                //
            //---------------------------------------------------------------------------------------------------------------//
            // (4 bytes: 25-28 in deployed contract)
            hex"5B_60_00_35",
            // (33 bytes: 29-61 in deployed contract)
            hex"7F_FF_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00_00",
            // (1 byte: 62 in deployed contract)
            hex"14",
            //---------------------------------------------------------------------------------------------------------------//
            // (3b) load up the destination jump address for actual purging (4), jump or raise `invalid` op-code
            //---------------------------------------------------------------------------------------------------------------//
            // 0x60    |  0x60_43            | PUSH1 67 (^)       | jumpDestination (0xFF00...00 == calldata)                //
            // 0x57    |  0x57               | JUMPI              |                                                          //
            // 0xFE    |  0xFE               | INVALID            |                                                          //
            //---------------------------------------------------------------------------------------------------------------//
            // (4 bytes: 63-66 in deployed contract)
            hex"60_43_57_FE",
            //---------------------------------------------------------------------------------------------------------------//
            // (4) perform actual purging
            //---------------------------------------------------------------------------------------------------------------//
            // 0x5B    |  0x5B               | JUMPDEST (67)      |                                                          //
            // 0x60    |  0x60_00            | PUSH1 0            | 0                                                        //
            // 0x51    |  0x51               | MLOAD              | byteDeployerAddress                                      //
            // 0xFF    |  0xFF               | SELFDESTRUCT       |                                                          //
            //---------------------------------------------------------------------------------------------------------------//
            // (5 bytes: 67-71 in deployed contract)
            hex"5B_60_00_51_FF",
            //---------------------------------------------------------------------------------------------------------------//
            // (*) Note: this value must be adjusted if selfdestruct purge logic is adjusted, to refer to the correct start  //
            //           offset for where the `msg.sender` address was stored in deployed bytecode.                          //
            //                                                                                                               //
            // (^) Note: this value must be adjusted if portions of the selfdestruct purge logic are adjusted.               //
            //---------------------------------------------------------------------------------------------------------------//
            //
            // store the deploying-contract's address (to be used to gate and call `selfdestruct`),
            // with expected 0-padding to fit a 20-byte address into a 30-byte slot.
            //
            // note: it is important that this address is the executing contract's address
            //      (the address that represents the client-application smart contract of this library)
            //      which means that it is the responsibility of the client-application smart contract
            //      to determine how deletes are gated (or if they are exposed at all) as it is only
            //      this contract that will be able to call `purgeBytecode` as the `CALLER` that is
            //      checked above (op-code 0x33).
            hex"00_00_00_00_00_00_00_00_00_00_00_00", // left-pad 20-byte address with 12 0x00 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");
    }
    /*//////////////////////////////////////////////////////////////
                               READ LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Read a string from contract bytecode
     * @param _address address of deployed contract with bytecode containing concat(gated-cleanup-logic, data)
     * @return data string read from contract bytecode
     */
    function readFromBytecode(address _address)
        internal
        view
        returns (string memory data)
    {
        // get the size of the bytecode
        uint256 bytecodeSize = _bytecodeSizeAt(_address);
        // handle case where address contains code < DATA_OFFSET
        // note: the first check here also captures the case where
        //       (bytecodeSize == 0) implicitly, but we add the second check of
        //       (bytecodeSize == 0) as a fall-through that will never execute
        //       unless `DATA_OFFSET` is set to 0 at some point.
        if ((bytecodeSize < DATA_OFFSET) || (bytecodeSize == 0)) {
            revert("ContractAsStorage: Read Error");
        }
        // handle case where address contains code >= DATA_OFFSET
        // decrement by DATA_OFFSET to account for purge logic
        uint256 size;
        unchecked {
            size = bytecodeSize - DATA_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 gated-cleanup-logic
            extcodecopy(_address, add(data, 0x20), DATA_OFFSET, size)
        }
    }
    /**
     * @notice Get address for deployer for given contract bytecode
     * @param _address address of deployed contract with bytecode containing concat(gated-cleanup-logic, data)
     * @return writerAddress address read from contract bytecode
     */
    function getWriterAddressForBytecode(address _address)
        internal
        view
        returns (address)
    {
        // get the size of the data
        uint256 bytecodeSize = _bytecodeSizeAt(_address);
        // handle case where address contains code < DATA_OFFSET
        // note: the first check here also captures the case where
        //       (bytecodeSize == 0) implicitly, but we add the second check of
        //       (bytecodeSize == 0) as a fall-through that will never execute
        //       unless `DATA_OFFSET` is set to 0 at some point.
        if ((bytecodeSize < DATA_OFFSET) || (bytecodeSize == 0)) {
            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:
            //       | gated-cleanup-logic | deployer-address (padded) | data |
            extcodecopy(
                _address,
                writerAddress,
                ADDRESS_OFFSET,
                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
            )
        }
    }
    /*//////////////////////////////////////////////////////////////
                              DELETE LOGIC
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Purge contract bytecode for cleanup purposes
     * @param _address address of deployed contract with bytecode containing concat(gated-cleanup-logic, data)
     * @dev This contract is only callable by the address of the contract that originally deployed the bytecode
     *      being purged. If this method is called by any other address, it will revert with the `INVALID` op-code.
     *      Additionally, for security purposes, the contract must be called with calldata `0xFF` to ensure that
     *      the `selfdestruct` op-code is intentionally being invoked, otherwise the `INVALID` op-code will be raised.
     */
    function purgeBytecode(address _address) internal {
        // deployed bytecode (above) handles all logic for purging state, so no
        // call data is expected to be passed along to perform data purge
        (
            bool success, /* `data` not needed */
        ) = _address.call(hex"FF");
        if (!success) {
            revert("ContractAsStorage: Delete Error");
        }
    }
    /*//////////////////////////////////////////////////////////////
                          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)
        }
    }
}
// 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 v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 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) (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/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: LGPL-3.0-only
// Created By: Art Blocks Inc.
import "../../interfaces/0.8.x/IMinterFilterV0.sol";
import "../../interfaces/0.8.x/IFilteredMinterV0.sol";
import "../../interfaces/0.8.x/IAdminACLV0.sol";
import "../../interfaces/0.8.x/IGenArt721CoreContractV3.sol";
import "@openzeppelin-4.5/contracts/utils/structs/EnumerableMap.sol";
pragma solidity 0.8.17;
/**
 * @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:
 * - addApprovedMinters
 * - removeApprovedMinters
 * - 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;
    /// 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;
    modifier onlyNonZeroAddress(address _address) {
        require(_address != address(0), "Must input non-zero address");
        _;
    }
    // modifier to restrict access to only AdminACL allowed calls
    // @dev defers which ACL contract is used to the core contract
    modifier onlyCoreAdminACL(bytes4 _selector) {
        require(_coreAdminACLAllowed(_selector), "Only Core AdminACL allowed");
        _;
    }
    // modifier to restrict access to only the artist of `_projectId`, or
    // AdminACL allowed calls
    // @dev defers which ACL contract is used to the core contract
    modifier onlyCoreAdminACLOrArtist(uint256 _projectId, bytes4 _selector) {
        require(
            msg.sender ==
                genArtCoreContract.projectIdToArtistAddress(_projectId) ||
                _coreAdminACLAllowed(_selector),
            "Only Core AdminACL or Artist"
        );
        _;
    }
    modifier onlyValidProjectId(uint256 _projectId) {
        require(
            _projectId < genArtCoreContract.nextProjectId(),
            "Only existing projects"
        );
        _;
    }
    modifier usingApprovedMinter(address _minterAddress) {
        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);
    }
    /**
     * @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
        onlyValidProjectId(_projectId)
        returns (address)
    {
        (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
        onlyValidProjectId(_projectId)
        returns (bool)
    {
        (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
// Created By: Art Blocks Inc.
pragma solidity ^0.8.0;
interface IMinterFilterV0 {
    /**
     * @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.
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;
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;
import "./IAdminACLV0.sol";
/// use the Royalty Registry's IManifold interface for token royalties
import "./IManifold.sol";
interface IGenArt721CoreContractV3 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 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);
    // @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 new function in V3
    function projectStateData(uint256 _projectId)
        external
        view
        returns (
            uint256 invocations,
            uint256 maxInvocations,
            bool active,
            bool paused,
            uint256 completedTimestamp,
            bool locked
        );
    // @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);
    // 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);
    /**
     * @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
// 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
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: 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;
    }
}