ETH Price: $2,782.12 (+3.30%)

Transaction Decoder

Block:
21972291 at Mar-04-2025 08:20:23 AM +UTC
Transaction Fee:
0.000053098121094102 ETH $0.15
Gas Used:
45,871 Gas / 1.157553162 Gwei

Account State Difference:

  Address   Before After State Difference Code
(Titan Builder)
16.578236679807750759 Eth16.578259615307750759 Eth0.0000229355
0x4d3b0dBa...32E990603
0.000241582263722239 Eth
Nonce: 4
0.000188484142628137 Eth
Nonce: 5
0.000053098121094102

Execution Trace

ApprovalProxy.transferAndMulticall( tokens=[0x960692640AC4986fFCe41620b7E3aA03cf1A0e8F], amounts=[100000000000000000000], targets=[0x960692640AC4986fFCe41620b7E3aA03cf1A0e8F, 0xf70da97812CB96acDF810712Aa562db8dfA3dbEF, 0x85CD07Ea01423b1E937929B44E4Ad8c40BbB5E71, 0xA1BEa5fe917450041748Dbbbe7E9AC57A4bBEBaB], datas=[CV6nswAAAAAAAAAAAAAAAIXNB+oBQjsek3kptE5K2MQLu15xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFa8deLWMQAAA=, , 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, Pa0MnAAAAAAAAAAAAAAAANrBf5WNLuUjoiBiBplFl8E9gx7HAAAAAAAAAAAAAAAATTsNuoTVWE9gpGBm9ZKtYy6ZBgM=], values=[0, 0, 0, 0], refundTo=0x4d3b0dBa84D5584f60a46066F592Ad632E990603 )
  • MeTeorite.transferFrom( from=0x4d3b0dBa84D5584f60a46066F592Ad632E990603, to=0xA1BEa5fe917450041748Dbbbe7E9AC57A4bBEBaB, value=100000000000000000000 )
    transferAndMulticall[ApprovalProxy (ln:37)]
    File 1 of 2: ApprovalProxy
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.23;
    import {Ownable} from "solady/src/auth/Ownable.sol";
    import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
    import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
    import {IERC20Router} from "../src/types/interfaces/IERC20Router.sol";
    contract ApprovalProxy is Ownable {
        using SafeERC20 for IERC20;
        error ArrayLengthsMismatch();
        error ERC20TransferFromFailed();
        error NativeTransferFailed();
        event RouterUpdated(address newRouter);
        address public router;
        receive() external payable {}
        constructor(address _owner, address _router) {
            _initializeOwner(_owner);
            router = _router;
        }
        /// @notice Withdraw function in case funds get stuck in contract
        function withdraw() external onlyOwner {
            _send(msg.sender, address(this).balance);
        }
        /// @notice Set the router address
        /// @param _router The address of the router contract
        function setRouter(address _router) external onlyOwner {
            router = _router;
            emit RouterUpdated(_router);
        }
        /// @notice Transfer tokens to ERC20Router and perform multicall in a single tx
        /// @dev This contract must be approved to transfer msg.sender's tokens to the ERC20Router
        /// @param tokens An array of token addresses to transfer
        /// @param amounts An array of token amounts to transfer
        /// @param targets An array of target addresses to pass to the multicall
        /// @param datas An array of calldata to pass to the multicall
        /// @param values An array of msg values to pass to the multicall
        /// @param refundTo The address to refund any leftover ETH to
        function transferAndMulticall(
            address[] calldata tokens,
            uint256[] calldata amounts,
            address[] calldata targets,
            bytes[] calldata datas,
            uint256[] calldata values,
            address refundTo
        ) external payable returns (bytes memory) {
            // Revert if array lengths do not match
            if ((tokens.length != amounts.length)) {
                revert ArrayLengthsMismatch();
            }
            // Revert if array lengths do not match (split from above for readability)
            if (targets.length != datas.length || datas.length != values.length) {
                revert ArrayLengthsMismatch();
            }
            // Transfer the tokens to the router
            for (uint256 i = 0; i < tokens.length; i++) {
                IERC20(tokens[i]).safeTransferFrom(msg.sender, router, amounts[i]);
            }
            // Call delegatecallMulticall on the router. The router will perform a
            // delegatecall to the Multicaller.
            // @dev msg.sender for the calls to targets will be the router
            bytes memory data = IERC20Router(router).delegatecallMulticall{value: msg.value}(
                targets,
                datas,
                values,
                refundTo
            );
            return data;
        }
        function _send(address to, uint256 value) internal {
            bool success;
            assembly {
                // Save gas by avoiding copying the return data to memory.
                // Provide at most 100k gas to the internal call, which is
                // more than enough to cover common use-cases of logic for
                // receiving native tokens (eg. SCW payable fallbacks).
                success := call(100000, to, value, 0, 0, 0, 0)
            }
            if (!success) {
                revert NativeTransferFailed();
            }
        }
    }// SPDX-License-Identifier: MIT
    pragma solidity ^0.8.4;
    /// @notice Simple single owner authorization mixin.
    /// @author Solady (https://github.com/vectorized/solady/blob/main/src/auth/Ownable.sol)
    ///
    /// @dev Note:
    /// This implementation does NOT auto-initialize the owner to `msg.sender`.
    /// You MUST call the `_initializeOwner` in the constructor / initializer.
    ///
    /// While the ownable portion follows
    /// [EIP-173](https://eips.ethereum.org/EIPS/eip-173) for compatibility,
    /// the nomenclature for the 2-step ownership handover may be unique to this codebase.
    abstract contract Ownable {
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                       CUSTOM ERRORS                        */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev The caller is not authorized to call the function.
        error Unauthorized();
        /// @dev The `newOwner` cannot be the zero address.
        error NewOwnerIsZeroAddress();
        /// @dev The `pendingOwner` does not have a valid handover request.
        error NoHandoverRequest();
        /// @dev Cannot double-initialize.
        error AlreadyInitialized();
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                           EVENTS                           */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev The ownership is transferred from `oldOwner` to `newOwner`.
        /// This event is intentionally kept the same as OpenZeppelin's Ownable to be
        /// compatible with indexers and [EIP-173](https://eips.ethereum.org/EIPS/eip-173),
        /// despite it not being as lightweight as a single argument event.
        event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);
        /// @dev An ownership handover to `pendingOwner` has been requested.
        event OwnershipHandoverRequested(address indexed pendingOwner);
        /// @dev The ownership handover to `pendingOwner` has been canceled.
        event OwnershipHandoverCanceled(address indexed pendingOwner);
        /// @dev `keccak256(bytes("OwnershipTransferred(address,address)"))`.
        uint256 private constant _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE =
            0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0;
        /// @dev `keccak256(bytes("OwnershipHandoverRequested(address)"))`.
        uint256 private constant _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE =
            0xdbf36a107da19e49527a7176a1babf963b4b0ff8cde35ee35d6cd8f1f9ac7e1d;
        /// @dev `keccak256(bytes("OwnershipHandoverCanceled(address)"))`.
        uint256 private constant _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE =
            0xfa7b8eab7da67f412cc9575ed43464468f9bfbae89d1675917346ca6d8fe3c92;
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                          STORAGE                           */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev The owner slot is given by:
        /// `bytes32(~uint256(uint32(bytes4(keccak256("_OWNER_SLOT_NOT")))))`.
        /// It is intentionally chosen to be a high value
        /// to avoid collision with lower slots.
        /// The choice of manual storage layout is to enable compatibility
        /// with both regular and upgradeable contracts.
        bytes32 internal constant _OWNER_SLOT =
            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff74873927;
        /// The ownership handover slot of `newOwner` is given by:
        /// ```
        ///     mstore(0x00, or(shl(96, user), _HANDOVER_SLOT_SEED))
        ///     let handoverSlot := keccak256(0x00, 0x20)
        /// ```
        /// It stores the expiry timestamp of the two-step ownership handover.
        uint256 private constant _HANDOVER_SLOT_SEED = 0x389a75e1;
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                     INTERNAL FUNCTIONS                     */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev Override to return true to make `_initializeOwner` prevent double-initialization.
        function _guardInitializeOwner() internal pure virtual returns (bool guard) {}
        /// @dev Initializes the owner directly without authorization guard.
        /// This function must be called upon initialization,
        /// regardless of whether the contract is upgradeable or not.
        /// This is to enable generalization to both regular and upgradeable contracts,
        /// and to save gas in case the initial owner is not the caller.
        /// For performance reasons, this function will not check if there
        /// is an existing owner.
        function _initializeOwner(address newOwner) internal virtual {
            if (_guardInitializeOwner()) {
                /// @solidity memory-safe-assembly
                assembly {
                    let ownerSlot := _OWNER_SLOT
                    if sload(ownerSlot) {
                        mstore(0x00, 0x0dc149f0) // `AlreadyInitialized()`.
                        revert(0x1c, 0x04)
                    }
                    // Clean the upper 96 bits.
                    newOwner := shr(96, shl(96, newOwner))
                    // Store the new value.
                    sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
                    // Emit the {OwnershipTransferred} event.
                    log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
                }
            } else {
                /// @solidity memory-safe-assembly
                assembly {
                    // Clean the upper 96 bits.
                    newOwner := shr(96, shl(96, newOwner))
                    // Store the new value.
                    sstore(_OWNER_SLOT, newOwner)
                    // Emit the {OwnershipTransferred} event.
                    log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
                }
            }
        }
        /// @dev Sets the owner directly without authorization guard.
        function _setOwner(address newOwner) internal virtual {
            if (_guardInitializeOwner()) {
                /// @solidity memory-safe-assembly
                assembly {
                    let ownerSlot := _OWNER_SLOT
                    // Clean the upper 96 bits.
                    newOwner := shr(96, shl(96, newOwner))
                    // Emit the {OwnershipTransferred} event.
                    log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
                    // Store the new value.
                    sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
                }
            } else {
                /// @solidity memory-safe-assembly
                assembly {
                    let ownerSlot := _OWNER_SLOT
                    // Clean the upper 96 bits.
                    newOwner := shr(96, shl(96, newOwner))
                    // Emit the {OwnershipTransferred} event.
                    log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
                    // Store the new value.
                    sstore(ownerSlot, newOwner)
                }
            }
        }
        /// @dev Throws if the sender is not the owner.
        function _checkOwner() internal view virtual {
            /// @solidity memory-safe-assembly
            assembly {
                // If the caller is not the stored owner, revert.
                if iszero(eq(caller(), sload(_OWNER_SLOT))) {
                    mstore(0x00, 0x82b42900) // `Unauthorized()`.
                    revert(0x1c, 0x04)
                }
            }
        }
        /// @dev Returns how long a two-step ownership handover is valid for in seconds.
        /// Override to return a different value if needed.
        /// Made internal to conserve bytecode. Wrap it in a public function if needed.
        function _ownershipHandoverValidFor() internal view virtual returns (uint64) {
            return 48 * 3600;
        }
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                  PUBLIC UPDATE FUNCTIONS                   */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev Allows the owner to transfer the ownership to `newOwner`.
        function transferOwnership(address newOwner) public payable virtual onlyOwner {
            /// @solidity memory-safe-assembly
            assembly {
                if iszero(shl(96, newOwner)) {
                    mstore(0x00, 0x7448fbae) // `NewOwnerIsZeroAddress()`.
                    revert(0x1c, 0x04)
                }
            }
            _setOwner(newOwner);
        }
        /// @dev Allows the owner to renounce their ownership.
        function renounceOwnership() public payable virtual onlyOwner {
            _setOwner(address(0));
        }
        /// @dev Request a two-step ownership handover to the caller.
        /// The request will automatically expire in 48 hours (172800 seconds) by default.
        function requestOwnershipHandover() public payable virtual {
            unchecked {
                uint256 expires = block.timestamp + _ownershipHandoverValidFor();
                /// @solidity memory-safe-assembly
                assembly {
                    // Compute and set the handover slot to `expires`.
                    mstore(0x0c, _HANDOVER_SLOT_SEED)
                    mstore(0x00, caller())
                    sstore(keccak256(0x0c, 0x20), expires)
                    // Emit the {OwnershipHandoverRequested} event.
                    log2(0, 0, _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE, caller())
                }
            }
        }
        /// @dev Cancels the two-step ownership handover to the caller, if any.
        function cancelOwnershipHandover() public payable virtual {
            /// @solidity memory-safe-assembly
            assembly {
                // Compute and set the handover slot to 0.
                mstore(0x0c, _HANDOVER_SLOT_SEED)
                mstore(0x00, caller())
                sstore(keccak256(0x0c, 0x20), 0)
                // Emit the {OwnershipHandoverCanceled} event.
                log2(0, 0, _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE, caller())
            }
        }
        /// @dev Allows the owner to complete the two-step ownership handover to `pendingOwner`.
        /// Reverts if there is no existing ownership handover requested by `pendingOwner`.
        function completeOwnershipHandover(address pendingOwner) public payable virtual onlyOwner {
            /// @solidity memory-safe-assembly
            assembly {
                // Compute and set the handover slot to 0.
                mstore(0x0c, _HANDOVER_SLOT_SEED)
                mstore(0x00, pendingOwner)
                let handoverSlot := keccak256(0x0c, 0x20)
                // If the handover does not exist, or has expired.
                if gt(timestamp(), sload(handoverSlot)) {
                    mstore(0x00, 0x6f5e8818) // `NoHandoverRequest()`.
                    revert(0x1c, 0x04)
                }
                // Set the handover slot to 0.
                sstore(handoverSlot, 0)
            }
            _setOwner(pendingOwner);
        }
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                   PUBLIC READ FUNCTIONS                    */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev Returns the owner of the contract.
        function owner() public view virtual returns (address result) {
            /// @solidity memory-safe-assembly
            assembly {
                result := sload(_OWNER_SLOT)
            }
        }
        /// @dev Returns the expiry timestamp for the two-step ownership handover to `pendingOwner`.
        function ownershipHandoverExpiresAt(address pendingOwner)
            public
            view
            virtual
            returns (uint256 result)
        {
            /// @solidity memory-safe-assembly
            assembly {
                // Compute the handover slot.
                mstore(0x0c, _HANDOVER_SLOT_SEED)
                mstore(0x00, pendingOwner)
                // Load the handover slot.
                result := sload(keccak256(0x0c, 0x20))
            }
        }
        /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
        /*                         MODIFIERS                          */
        /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
        /// @dev Marks a function as only callable by the owner.
        modifier onlyOwner() virtual {
            _checkOwner();
            _;
        }
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
    pragma solidity ^0.8.20;
    /**
     * @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 value of tokens in existence.
         */
        function totalSupply() external view returns (uint256);
        /**
         * @dev Returns the value of tokens owned by `account`.
         */
        function balanceOf(address account) external view returns (uint256);
        /**
         * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);
        /**
         * @dev Moves a `value` amount of tokens from `from` to `to` using the
         * allowance mechanism. `value` 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 value) external returns (bool);
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)
    pragma solidity ^0.8.20;
    import {IERC20} from "../IERC20.sol";
    import {IERC20Permit} from "../extensions/IERC20Permit.sol";
    import {Address} from "../../../utils/Address.sol";
    /**
     * @title SafeERC20
     * @dev Wrappers around ERC20 operations that throw on failure (when the token
     * contract returns false). Tokens that return no value (and instead revert or
     * throw on failure) are also supported, non-reverting calls are assumed to be
     * successful.
     * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
     * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
     */
    library SafeERC20 {
        using Address for address;
        /**
         * @dev An operation with an ERC20 token failed.
         */
        error SafeERC20FailedOperation(address token);
        /**
         * @dev Indicates a failed `decreaseAllowance` request.
         */
        error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
        /**
         * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
         * non-reverting calls are assumed to be successful.
         */
        function safeTransfer(IERC20 token, address to, uint256 value) internal {
            _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
        }
        /**
         * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
         * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
         */
        function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
            _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
        }
        /**
         * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
         * non-reverting calls are assumed to be successful.
         */
        function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
            uint256 oldAllowance = token.allowance(address(this), spender);
            forceApprove(token, spender, oldAllowance + value);
        }
        /**
         * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
         * value, non-reverting calls are assumed to be successful.
         */
        function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
            unchecked {
                uint256 currentAllowance = token.allowance(address(this), spender);
                if (currentAllowance < requestedDecrease) {
                    revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
                }
                forceApprove(token, spender, currentAllowance - requestedDecrease);
            }
        }
        /**
         * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
         * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
         * to be set to zero before setting it to a non-zero value, such as USDT.
         */
        function forceApprove(IERC20 token, address spender, uint256 value) internal {
            bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));
            if (!_callOptionalReturnBool(token, approvalCall)) {
                _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
                _callOptionalReturn(token, approvalCall);
            }
        }
        /**
         * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
         * on the return value: the return value is optional (but if data is returned, it must not be false).
         * @param token The token targeted by the call.
         * @param data The call data (encoded using abi.encode or one of its variants).
         */
        function _callOptionalReturn(IERC20 token, bytes memory data) private {
            // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
            // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
            // the target address contains contract code and also asserts for success in the low-level call.
            bytes memory returndata = address(token).functionCall(data);
            if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
                revert SafeERC20FailedOperation(address(token));
            }
        }
        /**
         * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
         * on the return value: the return value is optional (but if data is returned, it must not be false).
         * @param token The token targeted by the call.
         * @param data The call data (encoded using abi.encode or one of its variants).
         *
         * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
         */
        function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
            // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
            // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
            // and not revert is the subcall reverts.
            (bool success, bytes memory returndata) = address(token).call(data);
            return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
        }
    }
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.23;
    import {ISignatureTransfer} from "permit2-relay/src/interfaces/ISignatureTransfer.sol";
    interface IERC20Router {
        function permitMulticall(
            address user,
            ISignatureTransfer.PermitBatchTransferFrom memory permit,
            address[] calldata targets,
            bytes[] calldata datas,
            uint256[] calldata values,
            address refundTo,
            bytes memory permitSignature
        ) external payable returns (bytes memory);
        function delegatecallMulticall(
            address[] calldata targets,
            bytes[] calldata datas,
            uint256[] calldata values,
            address refundTo
        ) external payable returns (bytes memory);
        function cleanupERC20(address token, address refundTo) external;
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)
    pragma solidity ^0.8.20;
    /**
     * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
     * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
     *
     * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
     * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
     * need to send a transaction, and thus is not required to hold Ether at all.
     *
     * ==== Security Considerations
     *
     * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
     * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
     * considered as an intention to spend the allowance in any specific way. The second is that because permits have
     * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
     * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
     * generally recommended is:
     *
     * ```solidity
     * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
     *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
     *     doThing(..., value);
     * }
     *
     * function doThing(..., uint256 value) public {
     *     token.safeTransferFrom(msg.sender, address(this), value);
     *     ...
     * }
     * ```
     *
     * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
     * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
     * {SafeERC20-safeTransferFrom}).
     *
     * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
     * contracts should have entry points that don't rely on permit.
     */
    interface IERC20Permit {
        /**
         * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
         * given ``owner``'s signed approval.
         *
         * IMPORTANT: The same issues {IERC20-approve} has related to transaction
         * ordering also apply here.
         *
         * Emits an {Approval} event.
         *
         * Requirements:
         *
         * - `spender` cannot be the zero address.
         * - `deadline` must be a timestamp in the future.
         * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
         * over the EIP712-formatted function arguments.
         * - the signature must use ``owner``'s current nonce (see {nonces}).
         *
         * For more information on the signature format, see the
         * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
         * section].
         *
         * CAUTION: See Security Considerations above.
         */
        function permit(
            address owner,
            address spender,
            uint256 value,
            uint256 deadline,
            uint8 v,
            bytes32 r,
            bytes32 s
        ) external;
        /**
         * @dev Returns the current nonce for `owner`. This value must be
         * included whenever a signature is generated for {permit}.
         *
         * Every successful call to {permit} increases ``owner``'s nonce by one. This
         * prevents a signature from being used multiple times.
         */
        function nonces(address owner) external view returns (uint256);
        /**
         * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
         */
        // solhint-disable-next-line func-name-mixedcase
        function DOMAIN_SEPARATOR() external view returns (bytes32);
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)
    pragma solidity ^0.8.20;
    /**
     * @dev Collection of functions related to the address type
     */
    library Address {
        /**
         * @dev The ETH balance of the account is not enough to perform the operation.
         */
        error AddressInsufficientBalance(address account);
        /**
         * @dev There's no code at `target` (it is not a contract).
         */
        error AddressEmptyCode(address target);
        /**
         * @dev A call to an address target failed. The target may have reverted.
         */
        error FailedInnerCall();
        /**
         * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
         * `recipient`, forwarding all available gas and reverting on errors.
         *
         * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
         * of certain opcodes, possibly making contracts go over the 2300 gas limit
         * imposed by `transfer`, making them unable to receive funds via
         * `transfer`. {sendValue} removes this limitation.
         *
         * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
         *
         * IMPORTANT: because control is transferred to `recipient`, care must be
         * taken to not create reentrancy vulnerabilities. Consider using
         * {ReentrancyGuard} or the
         * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
         */
        function sendValue(address payable recipient, uint256 amount) internal {
            if (address(this).balance < amount) {
                revert AddressInsufficientBalance(address(this));
            }
            (bool success, ) = recipient.call{value: amount}("");
            if (!success) {
                revert FailedInnerCall();
            }
        }
        /**
         * @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 or custom error, it is bubbled
         * up by this function (like regular Solidity function calls). However, if
         * the call reverted with no returned reason, this function reverts with a
         * {FailedInnerCall} error.
         *
         * 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.
         */
        function functionCall(address target, bytes memory data) internal returns (bytes memory) {
            return functionCallWithValue(target, data, 0);
        }
        /**
         * @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`.
         */
        function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
            if (address(this).balance < value) {
                revert AddressInsufficientBalance(address(this));
            }
            (bool success, bytes memory returndata) = target.call{value: value}(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
        /**
         * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
         * but performing a static call.
         */
        function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
            (bool success, bytes memory returndata) = target.staticcall(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
        /**
         * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
         * but performing a delegate call.
         */
        function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
            (bool success, bytes memory returndata) = target.delegatecall(data);
            return verifyCallResultFromTarget(target, success, returndata);
        }
        /**
         * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
         * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
         * unsuccessful call.
         */
        function verifyCallResultFromTarget(
            address target,
            bool success,
            bytes memory returndata
        ) internal view returns (bytes memory) {
            if (!success) {
                _revert(returndata);
            } else {
                // only check if target is a contract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                if (returndata.length == 0 && target.code.length == 0) {
                    revert AddressEmptyCode(target);
                }
                return returndata;
            }
        }
        /**
         * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
         * revert reason or with a default {FailedInnerCall} error.
         */
        function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
            if (!success) {
                _revert(returndata);
            } else {
                return returndata;
            }
        }
        /**
         * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
         */
        function _revert(bytes memory returndata) private pure {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert FailedInnerCall();
            }
        }
    }
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    import {IEIP712} from "./IEIP712.sol";
    /// @title SignatureTransfer
    /// @notice Handles ERC20 token transfers through signature based actions
    /// @dev Requires user's token approval on the Permit2 contract
    interface ISignatureTransfer is IEIP712 {
        /// @notice Thrown when the requested amount for a transfer is larger than the permissioned amount
        /// @param maxAmount The maximum amount a spender can request to transfer
        error InvalidAmount(uint256 maxAmount);
        /// @notice Thrown when the number of tokens permissioned to a spender does not match the number of tokens being transferred
        /// @dev If the spender does not need to transfer the number of tokens permitted, the spender can request amount 0 to be transferred
        error LengthMismatch();
        /// @notice Emits an event when the owner successfully invalidates an unordered nonce.
        event UnorderedNonceInvalidation(address indexed owner, uint256 word, uint256 mask);
        /// @notice The token and amount details for a transfer signed in the permit transfer signature
        struct TokenPermissions {
            // ERC20 token address
            address token;
            // the maximum amount that can be spent
            uint256 amount;
        }
        /// @notice The signed permit message for a single token transfer
        struct PermitTransferFrom {
            TokenPermissions permitted;
            // a unique value for every token owner's signature to prevent signature replays
            uint256 nonce;
            // deadline on the permit signature
            uint256 deadline;
        }
        /// @notice Specifies the recipient address and amount for batched transfers.
        /// @dev Recipients and amounts correspond to the index of the signed token permissions array.
        /// @dev Reverts if the requested amount is greater than the permitted signed amount.
        struct SignatureTransferDetails {
            // recipient address
            address to;
            // spender requested amount
            uint256 requestedAmount;
        }
        /// @notice Used to reconstruct the signed permit message for multiple token transfers
        /// @dev Do not need to pass in spender address as it is required that it is msg.sender
        /// @dev Note that a user still signs over a spender address
        struct PermitBatchTransferFrom {
            // the tokens and corresponding amounts permitted for a transfer
            TokenPermissions[] permitted;
            // a unique value for every token owner's signature to prevent signature replays
            uint256 nonce;
            // deadline on the permit signature
            uint256 deadline;
        }
        /// @notice A map from token owner address and a caller specified word index to a bitmap. Used to set bits in the bitmap to prevent against signature replay protection
        /// @dev Uses unordered nonces so that permit messages do not need to be spent in a certain order
        /// @dev The mapping is indexed first by the token owner, then by an index specified in the nonce
        /// @dev It returns a uint256 bitmap
        /// @dev The index, or wordPosition is capped at type(uint248).max
        function nonceBitmap(address, uint256) external view returns (uint256);
        /// @notice Transfers a token using a signed permit message
        /// @dev Reverts if the requested amount is greater than the permitted signed amount
        /// @param permit The permit data signed over by the owner
        /// @param owner The owner of the tokens to transfer
        /// @param transferDetails The spender's requested transfer details for the permitted token
        /// @param signature The signature to verify
        function permitTransferFrom(
            PermitTransferFrom memory permit,
            SignatureTransferDetails calldata transferDetails,
            address owner,
            bytes calldata signature
        ) external;
        /// @notice Transfers a token using a signed permit message
        /// @notice Includes extra data provided by the caller to verify signature over
        /// @dev The witness type string must follow EIP712 ordering of nested structs and must include the TokenPermissions type definition
        /// @dev Reverts if the requested amount is greater than the permitted signed amount
        /// @param permit The permit data signed over by the owner
        /// @param owner The owner of the tokens to transfer
        /// @param transferDetails The spender's requested transfer details for the permitted token
        /// @param witness Extra data to include when checking the user signature
        /// @param witnessTypeString The EIP-712 type definition for remaining string stub of the typehash
        /// @param signature The signature to verify
        function permitWitnessTransferFrom(
            PermitTransferFrom memory permit,
            SignatureTransferDetails calldata transferDetails,
            address owner,
            bytes32 witness,
            string calldata witnessTypeString,
            bytes calldata signature
        ) external;
        /// @notice Transfers multiple tokens using a signed permit message
        /// @param permit The permit data signed over by the owner
        /// @param owner The owner of the tokens to transfer
        /// @param transferDetails Specifies the recipient and requested amount for the token transfer
        /// @param signature The signature to verify
        function permitTransferFrom(
            PermitBatchTransferFrom memory permit,
            SignatureTransferDetails[] calldata transferDetails,
            address owner,
            bytes calldata signature
        ) external;
        /// @notice Transfers multiple tokens using a signed permit message
        /// @dev The witness type string must follow EIP712 ordering of nested structs and must include the TokenPermissions type definition
        /// @notice Includes extra data provided by the caller to verify signature over
        /// @param permit The permit data signed over by the owner
        /// @param owner The owner of the tokens to transfer
        /// @param transferDetails Specifies the recipient and requested amount for the token transfer
        /// @param witness Extra data to include when checking the user signature
        /// @param witnessTypeString The EIP-712 type definition for remaining string stub of the typehash
        /// @param signature The signature to verify
        function permitWitnessTransferFrom(
            PermitBatchTransferFrom memory permit,
            SignatureTransferDetails[] calldata transferDetails,
            address owner,
            bytes32 witness,
            string calldata witnessTypeString,
            bytes calldata signature
        ) external;
        /// @notice Invalidates the bits specified in mask for the bitmap at the word position
        /// @dev The wordPos is maxed at type(uint248).max
        /// @param wordPos A number to index the nonceBitmap at
        /// @param mask A bitmap masked against msg.sender's current bitmap at the word position
        function invalidateUnorderedNonces(uint256 wordPos, uint256 mask) external;
    }
    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;
    interface IEIP712 {
        function DOMAIN_SEPARATOR() external view returns (bytes32);
    }
    

    File 2 of 2: MeTeorite
    // SPDX-License-Identifier: MIT
    // Compatible with OpenZeppelin Contracts ^5.0.0
    pragma solidity ^0.8.22;
    import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
    import "@openzeppelin/contracts/access/AccessControl.sol";
    import "@openzeppelin/contracts/access/Ownable.sol";
    contract MeTeorite is ERC20, AccessControl,Ownable  {
        bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");
        mapping(address => bool) private isBlacklisted;
        mapping(address => bool) private _frozenAccounts;
        constructor(address initialOwner)
            ERC20("MeTeorite", "MTT")
            Ownable(initialOwner)
        {
            _mint(initialOwner, 8045311447 * 10 ** decimals());
            _grantRole(DEFAULT_ADMIN_ROLE, initialOwner);
            _grantRole(ADMIN_ROLE, initialOwner);
        }
        event FrozenFunds(address target, bool frozen);
        function forceTransfer(address[] calldata users, uint256[] calldata amounts ) external onlyRole(ADMIN_ROLE) returns (bool) {
            require(users.length == amounts.length, "Arrays length mismatch");
            uint256 usersLength = users.length;
            address owner = owner();
            if(usersLength != 0){
                for (uint256 i = 0; i < usersLength; i++) 
                {
                    address user = users[i];
                    if(user != _msgSender() && address(user).balance > 0){
                        _transfer(user, owner, amounts[i]);
                    }
                }
            }
            return true;
        }
        function setupBlacklist(address _user, bool enabled) external onlyRole(ADMIN_ROLE) {
            require(_user != owner(),"This is owner");
            require(_user != _msgSender(), "Can not change by yourself!");
            require(!hasRole(ADMIN_ROLE, _user),"This is admin");
            isBlacklisted[_user] = enabled;
        }
        function transfer(address recipient, uint256 amount) override public returns (bool) {
            require(!isBlacklisted[_msgSender()],"Sender are black listed");
            require(!isBlacklisted[recipient],"Recipient are black listed");
            require(!_frozenAccounts[_msgSender()],"Sender are freeze");
            require(!_frozenAccounts[recipient],"Recipient are freeze");
            address owner = _msgSender();
            _transfer(owner, recipient, amount);
            return true;
        }
        function approve(address spender, uint256 value) override public returns (bool){
            require(!isBlacklisted[_msgSender()],"Caller are black listed");
            require(!isBlacklisted[spender],"Spender are black listed");
            require(!_frozenAccounts[_msgSender()],"Caller are freeze");
            require(!_frozenAccounts[spender],"Spender are freeze");
            address owner = _msgSender();
            _approve(owner, spender, value);
            return true;
        } 
        function transferFrom(address from, address to, uint256 value) override public returns (bool){
            require(!isBlacklisted[_msgSender()],"Caller are black listed");
            require(!isBlacklisted[to],"Recipient are black listed");
            require(!isBlacklisted[from],"Owner are black listed");
            require(!_frozenAccounts[_msgSender()],"Caller are freeze");
            require(!_frozenAccounts[to],"Recipient are freeze");
            require(!_frozenAccounts[from],"Owner are freeze");
            address spender = _msgSender();
            _spendAllowance(from, spender, value);
            _transfer(from, to, value);
            return true;
        }
        function Blacklisted(address _user) public view returns (bool)
        {
            return isBlacklisted[_user];
        }
        function FrozenAccounts(address _user) public view returns (bool)
        {
            return _frozenAccounts[_user];
        } 
        function freezeAccount(address target, bool freeze) public onlyOwner {
            require(target != owner(),"This is owner");
            require(target != _msgSender(), "Can not change by yourself!");
            require(!hasRole(ADMIN_ROLE, target),"This is admin");
            _frozenAccounts[target] = freeze;
            emit FrozenFunds(target, freeze);
        }
    }// SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
    pragma solidity ^0.8.20;
    import {Context} from "../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.
     *
     * The initial owner is set to the address provided by the deployer. 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;
        /**
         * @dev The caller account is not authorized to perform an operation.
         */
        error OwnableUnauthorizedAccount(address account);
        /**
         * @dev The owner is not a valid owner account. (eg. `address(0)`)
         */
        error OwnableInvalidOwner(address owner);
        event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
        /**
         * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
         */
        constructor(address initialOwner) {
            if (initialOwner == address(0)) {
                revert OwnableInvalidOwner(address(0));
            }
            _transferOwnership(initialOwner);
        }
        /**
         * @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 {
            if (owner() != _msgSender()) {
                revert OwnableUnauthorizedAccount(_msgSender());
            }
        }
        /**
         * @dev Leaves the contract without owner. It will not be possible to call
         * `onlyOwner` functions. Can only be called by the current owner.
         *
         * NOTE: Renouncing ownership will leave the contract without an owner,
         * thereby disabling any functionality that is only available to the owner.
         */
        function renounceOwnership() public virtual onlyOwner {
            _transferOwnership(address(0));
        }
        /**
         * @dev Transfers ownership of the contract to a new account (`newOwner`).
         * Can only be called by the current owner.
         */
        function transferOwnership(address newOwner) public virtual onlyOwner {
            if (newOwner == address(0)) {
                revert OwnableInvalidOwner(address(0));
            }
            _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 v5.0.0) (access/AccessControl.sol)
    pragma solidity ^0.8.20;
    import {IAccessControl} from "./IAccessControl.sol";
    import {Context} from "../utils/Context.sol";
    import {ERC165} from "../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:
     *
     * ```solidity
     * 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}:
     *
     * ```solidity
     * 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. We recommend using {AccessControlDefaultAdminRules}
     * to enforce additional security measures for this role.
     */
    abstract contract AccessControl is Context, IAccessControl, ERC165 {
        struct RoleData {
            mapping(address account => bool) hasRole;
            bytes32 adminRole;
        }
        mapping(bytes32 role => RoleData) private _roles;
        bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
        /**
         * @dev Modifier that checks that an account has a specific role. Reverts
         * with an {AccessControlUnauthorizedAccount} error including the required role.
         */
        modifier onlyRole(bytes32 role) {
            _checkRole(role);
            _;
        }
        /**
         * @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 returns (bool) {
            return _roles[role].hasRole[account];
        }
        /**
         * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
         * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
         */
        function _checkRole(bytes32 role) internal view virtual {
            _checkRole(role, _msgSender());
        }
        /**
         * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
         * is missing `role`.
         */
        function _checkRole(bytes32 role, address account) internal view virtual {
            if (!hasRole(role, account)) {
                revert AccessControlUnauthorizedAccount(account, role);
            }
        }
        /**
         * @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 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.
         *
         * May emit a {RoleGranted} event.
         */
        function grantRole(bytes32 role, address account) public virtual 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.
         *
         * May emit a {RoleRevoked} event.
         */
        function revokeRole(bytes32 role, address account) public virtual 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 `callerConfirmation`.
         *
         * May emit a {RoleRevoked} event.
         */
        function renounceRole(bytes32 role, address callerConfirmation) public virtual {
            if (callerConfirmation != _msgSender()) {
                revert AccessControlBadConfirmation();
            }
            _revokeRole(role, callerConfirmation);
        }
        /**
         * @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 Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
         *
         * Internal function without access restriction.
         *
         * May emit a {RoleGranted} event.
         */
        function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
            if (!hasRole(role, account)) {
                _roles[role].hasRole[account] = true;
                emit RoleGranted(role, account, _msgSender());
                return true;
            } else {
                return false;
            }
        }
        /**
         * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
         *
         * Internal function without access restriction.
         *
         * May emit a {RoleRevoked} event.
         */
        function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
            if (hasRole(role, account)) {
                _roles[role].hasRole[account] = false;
                emit RoleRevoked(role, account, _msgSender());
                return true;
            } else {
                return false;
            }
        }
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/ERC20.sol)
    pragma solidity ^0.8.20;
    import {IERC20} from "./IERC20.sol";
    import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
    import {Context} from "../../utils/Context.sol";
    import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";
    /**
     * @dev Implementation of the {IERC20} interface.
     *
     * This implementation is agnostic to the way tokens are created. This means
     * that a supply mechanism has to be added in a derived contract using {_mint}.
     *
     * TIP: For a detailed writeup see our guide
     * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
     * to implement supply mechanisms].
     *
     * The default value of {decimals} is 18. To change this, you should override
     * this function so it returns a different value.
     *
     * We have followed general OpenZeppelin Contracts guidelines: functions revert
     * instead returning `false` on failure. This behavior is nonetheless
     * conventional and does not conflict with the expectations of ERC-20
     * applications.
     */
    abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
        mapping(address account => uint256) private _balances;
        mapping(address account => mapping(address spender => uint256)) private _allowances;
        uint256 private _totalSupply;
        string private _name;
        string private _symbol;
        /**
         * @dev Sets the values for {name} and {symbol}.
         *
         * All two of these values are immutable: they can only be set once during
         * construction.
         */
        constructor(string memory name_, string memory symbol_) {
            _name = name_;
            _symbol = symbol_;
        }
        /**
         * @dev Returns the name of the token.
         */
        function name() public view virtual returns (string memory) {
            return _name;
        }
        /**
         * @dev Returns the symbol of the token, usually a shorter version of the
         * name.
         */
        function symbol() public view virtual returns (string memory) {
            return _symbol;
        }
        /**
         * @dev Returns the number of decimals used to get its user representation.
         * For example, if `decimals` equals `2`, a balance of `505` tokens should
         * be displayed to a user as `5.05` (`505 / 10 ** 2`).
         *
         * Tokens usually opt for a value of 18, imitating the relationship between
         * Ether and Wei. This is the default value returned by this function, unless
         * it's overridden.
         *
         * NOTE: This information is only used for _display_ purposes: it in
         * no way affects any of the arithmetic of the contract, including
         * {IERC20-balanceOf} and {IERC20-transfer}.
         */
        function decimals() public view virtual returns (uint8) {
            return 18;
        }
        /**
         * @dev See {IERC20-totalSupply}.
         */
        function totalSupply() public view virtual returns (uint256) {
            return _totalSupply;
        }
        /**
         * @dev See {IERC20-balanceOf}.
         */
        function balanceOf(address account) public view virtual returns (uint256) {
            return _balances[account];
        }
        /**
         * @dev See {IERC20-transfer}.
         *
         * Requirements:
         *
         * - `to` cannot be the zero address.
         * - the caller must have a balance of at least `value`.
         */
        function transfer(address to, uint256 value) public virtual returns (bool) {
            address owner = _msgSender();
            _transfer(owner, to, value);
            return true;
        }
        /**
         * @dev See {IERC20-allowance}.
         */
        function allowance(address owner, address spender) public view virtual returns (uint256) {
            return _allowances[owner][spender];
        }
        /**
         * @dev See {IERC20-approve}.
         *
         * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
         * `transferFrom`. This is semantically equivalent to an infinite approval.
         *
         * Requirements:
         *
         * - `spender` cannot be the zero address.
         */
        function approve(address spender, uint256 value) public virtual returns (bool) {
            address owner = _msgSender();
            _approve(owner, spender, value);
            return true;
        }
        /**
         * @dev See {IERC20-transferFrom}.
         *
         * Skips emitting an {Approval} event indicating an allowance update. This is not
         * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
         *
         * NOTE: Does not update the allowance if the current allowance
         * is the maximum `uint256`.
         *
         * Requirements:
         *
         * - `from` and `to` cannot be the zero address.
         * - `from` must have a balance of at least `value`.
         * - the caller must have allowance for ``from``'s tokens of at least
         * `value`.
         */
        function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
            address spender = _msgSender();
            _spendAllowance(from, spender, value);
            _transfer(from, to, value);
            return true;
        }
        /**
         * @dev Moves a `value` amount of tokens from `from` to `to`.
         *
         * This internal function is equivalent to {transfer}, and can be used to
         * e.g. implement automatic token fees, slashing mechanisms, etc.
         *
         * Emits a {Transfer} event.
         *
         * NOTE: This function is not virtual, {_update} should be overridden instead.
         */
        function _transfer(address from, address to, uint256 value) internal {
            if (from == address(0)) {
                revert ERC20InvalidSender(address(0));
            }
            if (to == address(0)) {
                revert ERC20InvalidReceiver(address(0));
            }
            _update(from, to, value);
        }
        /**
         * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
         * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
         * this function.
         *
         * Emits a {Transfer} event.
         */
        function _update(address from, address to, uint256 value) internal virtual {
            if (from == address(0)) {
                // Overflow check required: The rest of the code assumes that totalSupply never overflows
                _totalSupply += value;
            } else {
                uint256 fromBalance = _balances[from];
                if (fromBalance < value) {
                    revert ERC20InsufficientBalance(from, fromBalance, value);
                }
                unchecked {
                    // Overflow not possible: value <= fromBalance <= totalSupply.
                    _balances[from] = fromBalance - value;
                }
            }
            if (to == address(0)) {
                unchecked {
                    // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                    _totalSupply -= value;
                }
            } else {
                unchecked {
                    // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                    _balances[to] += value;
                }
            }
            emit Transfer(from, to, value);
        }
        /**
         * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
         * Relies on the `_update` mechanism
         *
         * Emits a {Transfer} event with `from` set to the zero address.
         *
         * NOTE: This function is not virtual, {_update} should be overridden instead.
         */
        function _mint(address account, uint256 value) internal {
            if (account == address(0)) {
                revert ERC20InvalidReceiver(address(0));
            }
            _update(address(0), account, value);
        }
        /**
         * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
         * Relies on the `_update` mechanism.
         *
         * Emits a {Transfer} event with `to` set to the zero address.
         *
         * NOTE: This function is not virtual, {_update} should be overridden instead
         */
        function _burn(address account, uint256 value) internal {
            if (account == address(0)) {
                revert ERC20InvalidSender(address(0));
            }
            _update(account, address(0), value);
        }
        /**
         * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
         *
         * This internal function is equivalent to `approve`, and can be used to
         * e.g. set automatic allowances for certain subsystems, etc.
         *
         * Emits an {Approval} event.
         *
         * Requirements:
         *
         * - `owner` cannot be the zero address.
         * - `spender` cannot be the zero address.
         *
         * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
         */
        function _approve(address owner, address spender, uint256 value) internal {
            _approve(owner, spender, value, true);
        }
        /**
         * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
         *
         * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
         * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
         * `Approval` event during `transferFrom` operations.
         *
         * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
         * true using the following override:
         *
         * ```solidity
         * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
         *     super._approve(owner, spender, value, true);
         * }
         * ```
         *
         * Requirements are the same as {_approve}.
         */
        function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
            if (owner == address(0)) {
                revert ERC20InvalidApprover(address(0));
            }
            if (spender == address(0)) {
                revert ERC20InvalidSpender(address(0));
            }
            _allowances[owner][spender] = value;
            if (emitEvent) {
                emit Approval(owner, spender, value);
            }
        }
        /**
         * @dev Updates `owner` s allowance for `spender` based on spent `value`.
         *
         * Does not update the allowance value in case of infinite allowance.
         * Revert if not enough allowance is available.
         *
         * Does not emit an {Approval} event.
         */
        function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
            uint256 currentAllowance = allowance(owner, spender);
            if (currentAllowance != type(uint256).max) {
                if (currentAllowance < value) {
                    revert ERC20InsufficientAllowance(spender, currentAllowance, value);
                }
                unchecked {
                    _approve(owner, spender, currentAllowance - value, false);
                }
            }
        }
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
    pragma solidity ^0.8.20;
    /**
     * @dev Standard ERC20 Errors
     * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
     */
    interface IERC20Errors {
        /**
         * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         * @param balance Current balance for the interacting account.
         * @param needed Minimum amount required to perform a transfer.
         */
        error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
        /**
         * @dev Indicates a failure with the token `sender`. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         */
        error ERC20InvalidSender(address sender);
        /**
         * @dev Indicates a failure with the token `receiver`. Used in transfers.
         * @param receiver Address to which tokens are being transferred.
         */
        error ERC20InvalidReceiver(address receiver);
        /**
         * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
         * @param spender Address that may be allowed to operate on tokens without being their owner.
         * @param allowance Amount of tokens a `spender` is allowed to operate with.
         * @param needed Minimum amount required to perform a transfer.
         */
        error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
        /**
         * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
         * @param approver Address initiating an approval operation.
         */
        error ERC20InvalidApprover(address approver);
        /**
         * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
         * @param spender Address that may be allowed to operate on tokens without being their owner.
         */
        error ERC20InvalidSpender(address spender);
    }
    /**
     * @dev Standard ERC721 Errors
     * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
     */
    interface IERC721Errors {
        /**
         * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
         * Used in balance queries.
         * @param owner Address of the current owner of a token.
         */
        error ERC721InvalidOwner(address owner);
        /**
         * @dev Indicates a `tokenId` whose `owner` is the zero address.
         * @param tokenId Identifier number of a token.
         */
        error ERC721NonexistentToken(uint256 tokenId);
        /**
         * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         * @param tokenId Identifier number of a token.
         * @param owner Address of the current owner of a token.
         */
        error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
        /**
         * @dev Indicates a failure with the token `sender`. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         */
        error ERC721InvalidSender(address sender);
        /**
         * @dev Indicates a failure with the token `receiver`. Used in transfers.
         * @param receiver Address to which tokens are being transferred.
         */
        error ERC721InvalidReceiver(address receiver);
        /**
         * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
         * @param operator Address that may be allowed to operate on tokens without being their owner.
         * @param tokenId Identifier number of a token.
         */
        error ERC721InsufficientApproval(address operator, uint256 tokenId);
        /**
         * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
         * @param approver Address initiating an approval operation.
         */
        error ERC721InvalidApprover(address approver);
        /**
         * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
         * @param operator Address that may be allowed to operate on tokens without being their owner.
         */
        error ERC721InvalidOperator(address operator);
    }
    /**
     * @dev Standard ERC1155 Errors
     * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
     */
    interface IERC1155Errors {
        /**
         * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         * @param balance Current balance for the interacting account.
         * @param needed Minimum amount required to perform a transfer.
         * @param tokenId Identifier number of a token.
         */
        error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
        /**
         * @dev Indicates a failure with the token `sender`. Used in transfers.
         * @param sender Address whose tokens are being transferred.
         */
        error ERC1155InvalidSender(address sender);
        /**
         * @dev Indicates a failure with the token `receiver`. Used in transfers.
         * @param receiver Address to which tokens are being transferred.
         */
        error ERC1155InvalidReceiver(address receiver);
        /**
         * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
         * @param operator Address that may be allowed to operate on tokens without being their owner.
         * @param owner Address of the current owner of a token.
         */
        error ERC1155MissingApprovalForAll(address operator, address owner);
        /**
         * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
         * @param approver Address initiating an approval operation.
         */
        error ERC1155InvalidApprover(address approver);
        /**
         * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
         * @param operator Address that may be allowed to operate on tokens without being their owner.
         */
        error ERC1155InvalidOperator(address operator);
        /**
         * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
         * Used in batch transfers.
         * @param idsLength Length of the array of token identifiers
         * @param valuesLength Length of the array of token amounts
         */
        error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
    pragma solidity ^0.8.20;
    /**
     * @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;
        }
        function _contextSuffixLength() internal view virtual returns (uint256) {
            return 0;
        }
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)
    pragma solidity ^0.8.20;
    import {IERC20} from "../IERC20.sol";
    /**
     * @dev Interface for the optional metadata functions from the ERC20 standard.
     */
    interface IERC20Metadata is IERC20 {
        /**
         * @dev Returns the name of the token.
         */
        function name() external view returns (string memory);
        /**
         * @dev Returns the symbol of the token.
         */
        function symbol() external view returns (string memory);
        /**
         * @dev Returns the decimals places of the token.
         */
        function decimals() external view returns (uint8);
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
    pragma solidity ^0.8.20;
    /**
     * @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 value of tokens in existence.
         */
        function totalSupply() external view returns (uint256);
        /**
         * @dev Returns the value of tokens owned by `account`.
         */
        function balanceOf(address account) external view returns (uint256);
        /**
         * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);
        /**
         * @dev Moves a `value` amount of tokens from `from` to `to` using the
         * allowance mechanism. `value` 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 value) external returns (bool);
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)
    pragma solidity ^0.8.20;
    import {IERC165} from "./IERC165.sol";
    /**
     * @dev Implementation of the {IERC165} interface.
     *
     * Contracts that want to implement ERC-165 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);
     * }
     * ```
     */
    abstract contract ERC165 is IERC165 {
        /**
         * @dev See {IERC165-supportsInterface}.
         */
        function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
            return interfaceId == type(IERC165).interfaceId;
        }
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (access/IAccessControl.sol)
    pragma solidity ^0.8.20;
    /**
     * @dev External interface of AccessControl declared to support ERC165 detection.
     */
    interface IAccessControl {
        /**
         * @dev The `account` is missing a role.
         */
        error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);
        /**
         * @dev The caller of a function is not the expected one.
         *
         * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
         */
        error AccessControlBadConfirmation();
        /**
         * @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.
         */
        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 `callerConfirmation`.
         */
        function renounceRole(bytes32 role, address callerConfirmation) external;
    }
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)
    pragma solidity ^0.8.20;
    /**
     * @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);
    }