Contract 0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x37355c260faa783d9e5fad6c36d15864cafa506e6b27a1af53babb08d44af796Batch Transfer206024582022-10-03 17:47:3117 mins ago0xe3115272ddcfe726a63e2d9b963c7ea8314d0d04 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.003283933 26.5
0xb5f0dd4299a45d105de97e4a3759d54db829e41f6c48a72f86ae5696810f0137Batch Transfer206023402022-10-03 17:43:2421 mins ago0x6c00270acc349bc5d15a945d2ec75bfadc54f23f IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0033646785 26.5
0xd815d7d168712c5c892e406061f25ee41c68b08785ccb602b46c46215208e29bBatch Transfer206022822022-10-03 17:41:1823 mins ago0xb732803adb29e7a3ac3f362b99bc895746a4f540 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0042489305 26.5
0x23bbbe2048ea091269f9a857d492016ad3538a78c1d876019b27c7621c105ae9Batch Transfer206019442022-10-03 17:29:4435 mins ago0x3c4b643bf808c81258c5d65235a35779a796f2a2 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0073959645 26.5
0x7d6b2fa25664c1d12755ad6eee7132f2fbffe43053641be18345bdab87a6a492Batch Transfer206018262022-10-03 17:25:3339 mins ago0x9e7a83f3f29d1d38447545baf4e80592631bb4d4 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.003827685646 27.14478155
0x7c55de7fb87014f057a17967b0a0975c8bb7a36af2ea85ac6c226ba1105d708fBatch Transfer206013082022-10-03 17:07:3557 mins ago0x274b2f0cc4c247ff4b7af4e1fa4f75d98501ff97 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.00317392525
0xccce3cdbcb7fe620320687a282c18945ef0331f8a66d0dcca9a60d1275384cacBatch Transfer206012292022-10-03 17:04:541 hr ago0x247fda7ddab57033445497ecdfb1b2e0665c1620 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.002169237 26.5
0xc8c2d7ba2bafbd3fe826401e3ed358d3eb403377d8079477c22885cfbceb12e3Batch Transfer206002312022-10-03 16:30:451 hr 34 mins ago0x34ea09d1e1c6e7c63efbdc80fbd44393a550d285 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.04750232165 26.614419969
0xce0324323b82bd926eb7a73b804e6eb0e354a182862c9ad358fb64047a664b94Batch Transfer206001082022-10-03 16:26:231 hr 38 mins ago0x6dcefd396a949a75b3a646b608eddc7c325b818d IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.004109508 27
0x4f62572ec540417978ff44a90b0de74454a0d7abbe3a5d2993ad60504ddf77e1Batch Transfer205995182022-10-03 16:06:081 hr 58 mins ago0x0d34c7e534ca8cceddb9cd401d0f06cbd89bcaed IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0299292325 26.5
0xc8359c052cb1ae8cf52901cae1101804fd5a909c948142ba88991e3aef34d5d7Batch Transfer205977732022-10-03 15:06:072 hrs 58 mins ago0x2791ffa7b54b3228c8302d7d2173082b86329a17 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.003927777 26.5
0xe55e22013d6a784badd98db56af6eeaa65456df82f127040d95c1afac8448966Batch Transfer205976042022-10-03 15:00:223 hrs 4 mins ago0x95cc8d7fb66f07e2a1b723709b92e0d464653cc4 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0028886855 26.5
0xf5160520db9be49757fa35f2783630d61212a3da7cfcb5170dbdbb3a8473e618Batch Transfer205973892022-10-03 14:53:003 hrs 12 mins ago0xa05bc9d3367af241c9c441f8f81f623b691f2a9e IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.00361208343 27.35225
0x79142b1fc9f80d38e6768f9512464495a30e2aa6c6c0c10fc73425f24d6d50fcBatch Transfer205972932022-10-03 14:49:473 hrs 15 mins ago0x753fb8b40c318b740d8c00883080d381c9bca638 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.009659727 26.5
0x8816abb54c17628594b00f17071c03fa7caa74151163fce3fa025b69eeebd163Batch Transfer205941752022-10-03 13:02:515 hrs 2 mins ago0x1793d9b7ff6c67650828e912bd384ea19600435b IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.002909064 26.5
0x73df62539e4617a7a785c786260e8da41c9f177a4bb5f4da09253a86482cee5dBatch Transfer205941512022-10-03 13:02:035 hrs 2 mins ago0x1793d9b7ff6c67650828e912bd384ea19600435b IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.003181855 26.5
0x7e3c41f4b03323a94b3e5c9d8c023aa367799c5335c700fb27f55ec1eb1817c5Batch Transfer205933842022-10-03 12:36:015 hrs 29 mins ago0xe447c21dc23867e3752489c9f108efeddbf9f9c2 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0040999475 26.5
0xf931aa20ca1c04866fd9e4d3e72fe7e00011e324e35c3cbc890c0e44ecee0edeBatch Transfer205931882022-10-03 12:29:255 hrs 35 mins ago0xe447c21dc23867e3752489c9f108efeddbf9f9c2 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.022540635 26.5
0xd595fc087c22b54fefe0121f4bf9c4c31b2016bca6398265617070362c5d643aBatch Transfer205923622022-10-03 12:00:486 hrs 4 mins ago0x40ee538af02efcda94db59e9d46a295c9ea4a6a8 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.00391638 26
0x23a18485144bca7eb47972aa5ad1fc60c3c32c6f920df24d8050d3f7a3768ebaBatch Transfer205919732022-10-03 11:47:236 hrs 17 mins ago0x041b08034bf1b5c954feca3e25c21c1713654018 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.001566786 26.5
0xbaa6d4491296016c0b5ebc0a80f0dea4a4aa80d3e11ffdb27cf654b31e5cb14fBatch Transfer205910052022-10-03 11:14:116 hrs 50 mins ago0xbeaa4c5be755060984e3f2ab72220d67297b7054 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0071499915 26.5
0xb7cd316974e6a7ba0b3caf188dc1d6996b7a27ea05d2269e45e99e7abf9634d2Batch Transfer205906832022-10-03 11:03:027 hrs 2 mins ago0x3afdd62e5eaeac5e25c9b76fc0fcc9926b35fa27 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.001962166 26.5
0x63c8615366de8c58c57184772169451d96feec830be3d2ff123796ea4e6b0a22Batch Transfer205898862022-10-03 10:35:507 hrs 29 mins ago0x03ebf53c2a7244db8c6bbeee632b3cd5ec31f614 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.0028144855 26.5
0x5e7aa497763762006d411e32ed1d907053dad66fe1440274622ea193244b264eBatch Transfer205891462022-10-03 10:09:557 hrs 55 mins ago0x49b18dfd1ed0e79d20a5ad02b3fe197d85d17ffb IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.002169237 26.5
0x035f94cd4685092127739c031bff098b4ebeeab14d64fd0706965d367977f2b8Batch Transfer205851262022-10-03 7:50:0310 hrs 14 mins ago0x08f98a9292c68620cbe76fdf4003b26366c392a6 IN  0x42ac9b9ca43b2c36ac1e78ea3bc71905f55a589a0 AVAX0.012112515 45
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Contract Source Code Verified (Exact Match)

Contract Name:
BatchTransferNFT

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 20 : BatchTransferNFT.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "./SafePausable.sol";
import "../interfaces/IBatchTransferNFT.sol";

error BatchTransferNFT__UnsupportedContract(address nft);

/**
 * @title BatchTransferNFT
 * @notice Enables to batch transfer multiple NFTs in a single call to this contract
 */
contract BatchTransferNFT is SafePausable, IBatchTransferNFT {
    /**
     * @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)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            interfaceId == type(IBatchTransferNFT).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @notice Batch transfer different NFT in a single call
     * @dev The function can get paused
     * @param _transfers The list of transfer.
     * The different nft needs to support either the IERC721 or IERC1155 interface
     */
    function batchTransfer(Transfer[] calldata _transfers)
        external
        override
        whenNotPaused
    {
        uint256 _length = _transfers.length;
        unchecked {
            for (uint256 i; i < _length; ++i) {
                Transfer memory _transfer = _transfers[i];

                if (_isERC721(_transfer.nft)) {
                    IERC721(_transfer.nft).safeTransferFrom(
                        _msgSender(),
                        _transfer.recipient,
                        _transfer.tokenId
                    );
                } else if (_isERC1155(_transfer.nft)) {
                    IERC1155(_transfer.nft).safeTransferFrom(
                        _msgSender(),
                        _transfer.recipient,
                        _transfer.tokenId,
                        _transfer.amount,
                        ""
                    );
                } else {
                    revert BatchTransferNFT__UnsupportedContract(_transfer.nft);
                }
            }
        }
    }

    /**
     * @notice Internal view function to return whether the address supports IERC721
     * @param nft The address of the nft
     * @return Whether the interface is supported or not
     */
    function _isERC721(address nft) internal view returns (bool) {
        return IERC165(nft).supportsInterface(type(IERC721).interfaceId);
    }

    /**
     * @notice Internal view function to return whether the address supports IERC1155
     * @param nft The address of the nft
     * @return Whether the interface is supported or not
     */
    function _isERC1155(address nft) internal view returns (bool) {
        return IERC165(nft).supportsInterface(type(IERC1155).interfaceId);
    }
}

File 2 of 20 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

File 3 of 20 : IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

File 4 of 20 : SafePausable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/security/Pausable.sol";

import "./SafeAccessControlEnumerable.sol";
import "../interfaces/ISafePausable.sol";

error SafePausable__AlreadyPaused();
error SafePausable__AlreadyUnpaused();

abstract contract SafePausable is
    SafeAccessControlEnumerable,
    Pausable,
    ISafePausable
{
    bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
    bytes32 public constant UNPAUSER_ROLE = keccak256("UNPAUSER_ROLE");

    bytes32 public constant PAUSER_ADMIN_ROLE = keccak256("PAUSER_ADMIN_ROLE");
    bytes32 public constant UNPAUSER_ADMIN_ROLE =
        keccak256("UNPAUSER_ADMIN_ROLE");

    /**
     * @dev Set the role admins
     */
    constructor() {
        _setRoleAdmin(PAUSER_ROLE, PAUSER_ADMIN_ROLE);
        _setRoleAdmin(UNPAUSER_ROLE, UNPAUSER_ADMIN_ROLE);
    }

    /**
     * @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)
        public
        view
        virtual
        override(SafeAccessControlEnumerable)
        returns (bool)
    {
        return
            interfaceId == type(ISafePausable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @notice Pauses the contract.
     * @dev Sensible part of a contract might be pausable for security reasons.
     *
     * Requirements:
     * - the caller must be the `owner` or have the ``role`` role.
     * - the contrat needs to be unpaused.
     */
    function pause() public virtual override onlyOwnerOrRole(PAUSER_ROLE) {
        if (paused()) revert SafePausable__AlreadyPaused();
        _pause();
    }

    /**
     * @notice Unpauses the contract.
     * @dev Sensible part of a contract might be pausable for security reasons.
     *
     * Requirements:
     * - the caller must be the `owner` or have the ``role`` role.
     * - the contrat needs to be unpaused.
     */
    function unpause() public virtual override onlyOwnerOrRole(UNPAUSER_ROLE) {
        if (!paused()) revert SafePausable__AlreadyUnpaused();
        _unpause();
    }
}

File 5 of 20 : IBatchTransferNFT.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IBatchTransferNFT {
    struct Transfer {
        address nft;
        address recipient;
        uint256 tokenId;
        uint256 amount;
    }

    function batchTransfer(Transfer[] calldata _transfers) external;
}

File 6 of 20 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

File 7 of 20 : Pausable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 8 of 20 : SafeAccessControlEnumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";

import "./PendingOwnable.sol";

error SafeAccessControlEnumerable__SenderMissingRoleAndIsNotOwner(
    bytes32 role,
    address sender
);

error SafeAccessControlEnumerable__RoleIsDefaultAdmin();

abstract contract SafeAccessControlEnumerable is
    PendingOwnable,
    AccessControlEnumerable
{
    /**
     * @dev Modifier that checks that the role is not the `DEFAULT_ADMIN_ROLE`
     */
    modifier roleIsNotDefaultAdmin(bytes32 role) {
        if (role == DEFAULT_ADMIN_ROLE)
            revert SafeAccessControlEnumerable__RoleIsDefaultAdmin();
        _;
    }

    /**
     * @dev Modifier that checks that an account is the `owner` or has a specific role
     */
    modifier onlyOwnerOrRole(bytes32 role) {
        if (msg.sender != owner() && !hasRole(role, msg.sender))
            revert SafeAccessControlEnumerable__SenderMissingRoleAndIsNotOwner(
                role,
                msg.sender
            );
        _;
    }

    /**
     * @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)
        public
        view
        virtual
        override(PendingOwnable, AccessControlEnumerable)
        returns (bool)
    {
        return
            PendingOwnable.supportsInterface(interfaceId) ||
            AccessControlEnumerable.supportsInterface(interfaceId);
    }

    /**
     * @notice Grants `role` to `account`.
     * @dev If `account` had not been already granted `role`, emits a {RoleGranted} event.
     *
     * Requirements:
     *
     * - the caller must be the `owner` or have ``role``'s admin role.
     * - the role granted can't be `DEFAULT_ADMIN`
     *
     * @param role The role to grant
     * @param account The address of the account
     */
    function grantRole(bytes32 role, address account)
        public
        virtual
        override
        roleIsNotDefaultAdmin(role)
        onlyOwnerOrRole(getRoleAdmin(role))
    {
        _grantRole(role, account);
    }

    /**
     * @notice Revokes `role` from `account`.
     * @dev If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must be the `owner` or have ``role``'s admin role.
     * - the role revoked can't be `DEFAULT_ADMIN`
     *
     * @param role The role to revoke
     * @param account The address of the account
     */
    function revokeRole(bytes32 role, address account)
        public
        virtual
        override
        roleIsNotDefaultAdmin(role)
        onlyOwnerOrRole(getRoleAdmin(role))
    {
        _revokeRole(role, account);
    }

    /**
     * @notice Revokes `role` from the calling account.
     *
     * @dev Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     * - the role renounced can't be `DEFAULT_ADMIN`
     *
     * @param role The role to renounce
     * @param account The address of the account
     */
    function renounceRole(bytes32 role, address account)
        public
        virtual
        override
        roleIsNotDefaultAdmin(role)
    {
        super.renounceRole(role, account);
    }

    /**
     * @notice Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     * @dev This also transfer the `DEFAULT_ADMIN` role to the new owner
     * @param _newOwner The address of the new owner
     */
    function _transferOwnership(address _newOwner) internal virtual override {
        _revokeRole(DEFAULT_ADMIN_ROLE, owner());
        if (_newOwner != address(0)) _grantRole(DEFAULT_ADMIN_ROLE, _newOwner);

        super._transferOwnership(_newOwner);
    }
}

File 9 of 20 : ISafePausable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/IAccessControlEnumerable.sol";

import "../interfaces/IPendingOwnable.sol";

interface ISafePausable is IAccessControlEnumerable, IPendingOwnable {
    function PAUSER_ROLE() external pure returns (bytes32);

    function UNPAUSER_ROLE() external pure returns (bytes32);

    function PAUSER_ADMIN_ROLE() external pure returns (bytes32);

    function UNPAUSER_ADMIN_ROLE() external pure returns (bytes32);

    function pause() external;

    function unpause() external;
}

File 10 of 20 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 11 of 20 : AccessControlEnumerable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

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

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

File 12 of 20 : PendingOwnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/introspection/ERC165.sol";

import "../interfaces/IPendingOwnable.sol";
import "./PendingOwnableErrors.sol";

/**
 * @title Pending Ownable
 * @author Trader Joe
 * @notice 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. The ownership of this contract is transferred using the
 * push and pull pattern, the current owner set a `pendingOwner` using
 * {setPendingOwner} and that address can then call {becomeOwner} to become the
 * owner of that contract. The main logic and comments comes from OpenZeppelin's
 * Ownable contract.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {setPendingOwner} and {becomeOwner}.
 *
 * 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 PendingOwnable is ERC165, IPendingOwnable {
    address private _owner;
    address private _pendingOwner;

    /**
     * @notice Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        if (msg.sender != _owner) revert PendingOwnable__NotOwner();
        _;
    }

    /**
     * @notice Throws if called by any account other than the pending owner.
     */
    modifier onlyPendingOwner() {
        if (msg.sender != _pendingOwner || msg.sender == address(0))
            revert PendingOwnable__NotPendingOwner();
        _;
    }

    /**
     * @notice Initializes the contract setting the deployer as the initial owner
     */
    constructor() {
        _transferOwnership(msg.sender);
    }

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

    /**
     * @notice Returns the address of the current pending owner
     * @return The address of the current pending owner
     */
    function pendingOwner() public view virtual override returns (address) {
        return _pendingOwner;
    }

    /**
     * @notice Sets the pending owner address. This address will be able to become
     * the owner of this contract by calling {becomeOwner}
     */
    function setPendingOwner(address pendingOwner_)
        public
        virtual
        override
        onlyOwner
    {
        if (_pendingOwner != address(0))
            revert PendingOwnable__PendingOwnerAlreadySet();
        _setPendingOwner(pendingOwner_);
    }

    /**
     * @notice Revoke the pending owner address. This address will not be able to
     * call {becomeOwner} to become the owner anymore.
     * Can only be called by the owner
     */
    function revokePendingOwner() public virtual override onlyOwner {
        if (_pendingOwner == address(0))
            revert PendingOwnable__NoPendingOwner();
        _setPendingOwner(address(0));
    }

    /**
     * @notice Transfers the ownership to the new owner (`pendingOwner`).
     * Can only be called by the pending owner
     */
    function becomeOwner() public virtual override onlyPendingOwner {
        _transferOwnership(msg.sender);
    }

    /**
     * @notice 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 override onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @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)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            interfaceId == type(IPendingOwnable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @notice Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     * @param _newOwner The address of the new owner
     */
    function _transferOwnership(address _newOwner) internal virtual {
        address _oldOwner = _owner;
        _owner = _newOwner;
        _pendingOwner = address(0);
        emit OwnershipTransferred(_oldOwner, _newOwner);
    }

    /**
     * @notice Push the new owner, it needs to be pulled to be effective.
     * Internal function without access restriction.
     * @param pendingOwner_ The address of the new pending owner
     */
    function _setPendingOwner(address pendingOwner_) internal virtual {
        _pendingOwner = pendingOwner_;
        emit PendingOwnerSet(pendingOwner_);
    }
}

File 13 of 20 : IAccessControlEnumerable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

File 14 of 20 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

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

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 15 of 20 : EnumerableSet.sol
// 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;
    }
}

File 16 of 20 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 17 of 20 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 18 of 20 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

File 19 of 20 : IPendingOwnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IPendingOwnable {
    event PendingOwnerSet(address indexed pendingOwner);
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    function owner() external view returns (address);

    function pendingOwner() external view returns (address);

    function setPendingOwner(address pendingOwner) external;

    function revokePendingOwner() external;

    function becomeOwner() external;

    function renounceOwnership() external;
}

File 20 of 20 : PendingOwnableErrors.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

error PendingOwnable__NotOwner();
error PendingOwnable__NotPendingOwner();
error PendingOwnable__PendingOwnerAlreadySet();
error PendingOwnable__NoPendingOwner();

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

Contract ABI

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IBatchTransferNFT.Transfer[]","name":"_transfers","type":"tuple[]"}],"name":"batchTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"becomeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revokePendingOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pendingOwner_","type":"address"}],"name":"setPendingOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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