ETH Price: $3,510.43 (+3.33%)
Gas: 63 Gwei

Contract

0x6683E821554F73929bee47a413AE33E4336690D4
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Value
0x60806040170402882023-04-13 18:50:59325 days ago1681411859IN
 Create: PRV
0 ETH0.0697050634.77168937

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
PRV

Compiler Version
v0.8.16+commit.07a7930e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 19 of 19 : PRV.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.16;

import {IERC20Upgradeable as IERC20} from "@oz-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import {IERC20PermitUpgradeable as IERC20Permit} from "@oz-upgradeable/token/ERC20/extensions/IERC20PermitUpgradeable.sol";
import {IWithdrawalManager} from "@interfaces/IWithdrawalManager.sol";

import {ERC20Upgradeable as ERC20} from "@oz-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import {ERC20PermitUpgradeable as ERC20Permit} from "@oz-upgradeable/token/ERC20/extensions/draft-ERC20PermitUpgradeable.sol";
import {OwnableUpgradeable as Ownable} from "@oz-upgradeable/access/OwnableUpgradeable.sol";
import {ReentrancyGuardUpgradeable as ReentrancyGuard} from "@oz-upgradeable/security/ReentrancyGuardUpgradeable.sol";

interface IPRVEvents {
    event FeeSet(uint256 fee);
    event FeeBeneficiarySet(address indexed feeBeneficiary);
    event GovernorSet(address indexed governor);
    event Withdrawal(address indexed to, uint256 _amount);
    event WithdrawalManagerSet(address indexed withdrawalManager);
}

/**
 * @title  Auxo Passive Reward Vault (PRV)
 * @author alexintosh, jordaniza
 * @notice PRV has the following key properties:
 *    1) Implements the full ERC20 standard, including optional fields name, symbol and decimals
 *    2) Is upgradeable
 *    3) PRV only be minted in exchange for deposits in AUXO tokens
 *    4) PRV can be burned to withdraw underlying AUXO back in return, a withdrawal manager contract can be defined
 *       to add additional withdrawal logic.
 *    5) Has admin functions managed by a governor address
 *    6) Implements the ERC20Permit standard for offchain approvals.
 */
contract PRV is ERC20, ERC20Permit, ReentrancyGuard, IPRVEvents {
    /// ====== PUBLIC VARIABLES ======

    /// @notice max entry fee from AUXO -> PRV is 10%
    uint256 public constant MAX_FEE = 10 ** 17;

    /// @notice the deposit token required to mint PRV
    address public AUXO;

    /// @notice express as a % of the deposit token and sent to the fee beneficiary.
    uint256 public fee;

    /// @notice entry fees will be sent to this address for each token minted.
    address public feeBeneficiary;

    /// @notice governor retains admin control over the contract.
    address public governor;

    /// @notice external contract to determine if a user is eligible to withdraw.
    address public withdrawalManager;

    /// ====== GAP ======

    /// @dev gap for future storage variables in upgrades with inheritance
    uint256[10] private __gap;

    /// ====== MODIFIERS ======

    modifier onlyGovernance() {
        require(_msgSender() == governor, "!GOVERNOR");
        _;
    }

    /// ====== Initializer ======

    // disable initializers for implementation contracts
    constructor() {
        _disableInitializers();
    }

    /**
     * @param  _auxo address of the AUXO token contract. Cannot be changed after deployment.
     * @param  _fee for withdrawing AUXO back to PRV, can be set to zero to disable fees.
     * @param  _feeBeneficiary address to send fees to - if set to zero, fees will not be charged.
     * @param  _governor address of the governor that has admin control over the contract. Only the governor can change the governor.
     * @param  _withdrawalManager contract to apply additional withdrawal steps. If set to zero, no restrictions will be applied to withdrawals.
     */
    function initialize(address _auxo, uint256 _fee, address _feeBeneficiary, address _governor, address _withdrawalManager) external initializer {
        require(_auxo != address(0), "AUXO:ZERO_ADDR");
        require(_fee <= MAX_FEE, "FEE TOO BIG");
        require(_governor != address(0), "GV:ZERO_ADDR");

        __ReentrancyGuard_init();
        __ERC20_init("Auxo Passive Reward Vault", "PRV");
        __ERC20Permit_init("Auxo Passive Reward Vault");

        AUXO = _auxo;
        fee = _fee;
        feeBeneficiary = _feeBeneficiary;
        governor = _governor;
        withdrawalManager = _withdrawalManager;

        emit FeeSet(_fee);
        emit FeeBeneficiarySet(_feeBeneficiary);
        emit GovernorSet(_governor);
        emit WithdrawalManagerSet(_withdrawalManager);
    }

    /**
     * @notice Allows a user to deposit and stake a specific token (AUXO) to a specified account.
     * @param  _account Ethereum address of the account to deposit and stake the token to.
     * @param  _amount uint256 representing the amount of token to deposit and stake.
     */
    function depositFor(address _account, uint256 _amount) external {
        _deposit(_account, _amount);
    }

    /**
     * @notice Allows a user to deposit using ERC20 permit method.
     * @param  _deadline uint256 representing the deadline for the signature to be valid.
     * @dev   See ERC20-Permit for details on the ECDSA params v,r,s
     */
    function depositForWithSignature(
        address _account,
        uint256 _amount,
        uint256 _deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external {
        IERC20Permit(AUXO).permit(_msgSender(), address(this), _amount, _deadline, v, r, s);
        _deposit(_account, _amount);
    }

    /**
     * @notice redeems PRV for AUXO. A withdrawal fee may be applied.
     * @dev    if the withdrawal manager is set, it will be called to validate the withdrawal request.
     * @param  _amount of PRV to redeem for AUXO.
     * @param  _data to pass to withdrawal manager for withdrawal validation
     */
    function withdraw(uint256 _amount, bytes memory _data)
        external
        nonReentrant
    {
        // cannot do a zero withdrawal
        require(_amount > 0, "ZERO_AMOUNT");

        if (withdrawalManager != address(0)) {
            // reach out to the manager to check the validity of the withdrawal request
            require(
                IWithdrawalManager(withdrawalManager).verify(_amount, _msgSender(), _data), "BAD_WITHDRAW"
            );
        }

        // the amount is valid, charge the fee and redeem auxo
        uint256 amountMinFee = _chargeFee(_amount);
        _burn(_msgSender(), _amount);
        require(IERC20(AUXO).transfer(_msgSender(), amountMinFee), "TRANSFER_FAILED");

        emit Withdrawal(_msgSender(), _amount);
    }

    /// ====== INTERNAL ======

    /**
     * @dev    calculates the fee to be charged - if the beneficiary is not set, no fee is charged.
     * @return (the amount of auxo after the fee has been deducted, the fee amount deducted)
     */
    function _calcFee(uint256 _amount) internal view returns (uint256, uint256) {
        // don't charge a fee if the beneficiary is not set (or fee is zero)
        if (fee == 0 || feeBeneficiary == address(0)) return (_amount, 0);

        uint256 feeAmount = _amount * fee / (10 ** 18);
        uint256 amountMinFee = _amount - feeAmount;
        return (amountMinFee, feeAmount);
    }

    /**
     *  @dev    calculates the entry fee in auxo and sends to the fee beneficiary.
     *  @return the amount of auxo after the fee has been deducted.
     */
    function _chargeFee(uint256 _amount) internal returns (uint256) {
        (uint256 amountMinFee, uint256 feeAmount) = _calcFee(_amount);

        // _calcFee already checks for the fee beneficiary being set
        // so we don't need to check again here to avoid a zero address transfer error
        if (feeAmount > 0) {
            require(IERC20(AUXO).transfer(feeBeneficiary, feeAmount), "TRANSFER_FAILED");
        }
        return amountMinFee;
    }

    /**
     * @dev takes a deposit, in auxo from the sender and mints PRV
     */
    function _deposit(address _account, uint256 _amount) internal {
        require(IERC20(AUXO).transferFrom(_msgSender(), address(this), _amount), "TRANSFER_FAILED");
        _mint(_account, _amount);
    }

    /// ====== VIEWS ======

    /// @return the amount of AUXO that will be redeemed for the given amount of PRV, minus any exit fees
    function previewWithdraw(uint256 _amount) external view returns (uint256) {
        (uint256 amountPreview,) = _calcFee(_amount);
        return amountPreview;
    }

    /// ====== ADMIN FUNCTIONS ======

    /**
     * @notice This function sets the exit fee for the contract. Only the governor can call this function.
     * @param  _fee uint256 value of the exit fee, bounded at 10%.
     */
    function setFee(uint256 _fee) public onlyGovernance {
        require(_fee <= MAX_FEE, "FEE_TOO_BIG");
        fee = _fee;
        emit FeeSet(_fee);
    }

    /**
     * @notice sets the beneficiary address for the contract's entry fee. Only the governor can call this function.
     * @param  _beneficiary address of the beneficiary for the entry fee.
     */
    function setFeeBeneficiary(address _beneficiary) public onlyGovernance {
        require(_beneficiary != address(0), "ZERO_ADDR");
        feeBeneficiary = _beneficiary;
        emit FeeBeneficiarySet(_beneficiary);
    }

    /**
     * @notice utility function to set fee and beneficiary in one call.
     * @dev    we do not need to check for governance as this is checked in the setters.
     */
    function setFeePolicy(uint256 _fee, address _beneficiary) external {
        setFee(_fee);
        setFeeBeneficiary(_beneficiary);
    }

    /**
     * @notice allows the existing governor to transfer ownership to a new address.
     */
    function setGovernor(address _governor) external onlyGovernance {
        require(_governor != address(0), "ZERO_ADDR");
        governor = _governor;
        emit GovernorSet(_governor);
    }

    /**
     * @notice allows the existing governor to set a withdrawal manager
     *         this is a contract that will verify the validity of a withdrawal and amount
     * @dev    set the manager to address(0) to disable any additional withdrawal logic
     */
    function setWithdrawalManager(address _withdrawalManager) external onlyGovernance {
        withdrawalManager = _withdrawalManager;
        emit WithdrawalManagerSet(_withdrawalManager);
    }
}

File 2 of 19 : OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

File 3 of 19 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

File 4 of 19 : ReentrancyGuardUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

File 5 of 19 : ERC20Upgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.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}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * 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 ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => 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.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override 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 override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override 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 `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` 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 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * 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 `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `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.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` 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.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[45] private __gap;
}

File 6 of 19 : IERC20Upgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

File 7 of 19 : ERC20PermitUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/extensions/ERC20Permit.sol)

pragma solidity ^0.8.0;

import "./IERC20PermitUpgradeable.sol";
import "../ERC20Upgradeable.sol";
import "../../../utils/cryptography/ECDSAUpgradeable.sol";
import "../../../utils/cryptography/EIP712Upgradeable.sol";
import "../../../utils/CountersUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation 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.
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 51
 */
abstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {
    using CountersUpgradeable for CountersUpgradeable.Counter;

    mapping(address => CountersUpgradeable.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.
     * However, to ensure consistency with the upgradeable transpiler, we will continue
     * to reserve a slot.
     * @custom:oz-renamed-from _PERMIT_TYPEHASH
     */
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    function __ERC20Permit_init(string memory name) internal onlyInitializing {
        __EIP712_init_unchained(name, "1");
    }

    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSAUpgradeable.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        CountersUpgradeable.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

File 8 of 19 : IERC20MetadataUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @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);
}

File 9 of 19 : IERC20PermitUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @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.
 */
interface IERC20PermitUpgradeable {
    /**
     * @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].
     */
    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);
}

File 10 of 19 : draft-ERC20PermitUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/extensions/draft-ERC20Permit.sol)

pragma solidity ^0.8.0;

// EIP-2612 is Final as of 2022-11-01. This file is deprecated.

import "./ERC20PermitUpgradeable.sol";

File 11 of 19 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 12 of 19 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

File 13 of 19 : CountersUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library CountersUpgradeable {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

File 14 of 19 : StringsUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = MathUpgradeable.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMathUpgradeable.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, MathUpgradeable.log256(value) + 1);
        }
    }

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

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

File 15 of 19 : ECDSAUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../StringsUpgradeable.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSAUpgradeable {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", StringsUpgradeable.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }
}

File 16 of 19 : EIP712Upgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSAUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 *
 * @custom:storage-size 52
 */
abstract contract EIP712Upgradeable is Initializable {
    /* solhint-disable var-name-mixedcase */
    bytes32 private _HASHED_NAME;
    bytes32 private _HASHED_VERSION;
    bytes32 private constant _TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash());
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712NameHash() internal virtual view returns (bytes32) {
        return _HASHED_NAME;
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712VersionHash() internal virtual view returns (bytes32) {
        return _HASHED_VERSION;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

File 17 of 19 : MathUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library MathUpgradeable {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

File 18 of 19 : SignedMathUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMathUpgradeable {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

File 19 of 19 : IWithdrawalManager.sol
pragma solidity ^0.8.0;

interface IWithdrawalManager {
    function verify(uint256 _amount, address _account, bytes calldata _data) external returns (bool);
}

Settings
{
  "remappings": [
    "@bridge/=src/modules/vedough-bridge/",
    "@forge-std/=lib/forge-std/src/",
    "@governance/=src/modules/governance/",
    "@interfaces/=src/interfaces/",
    "@mocks/=test/mocks/",
    "@oracles/=src/modules/reward-policies/",
    "@oz-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "@oz/=lib/openzeppelin-contracts/contracts/",
    "@pproxy/=lib/pie-proxy/contracts/",
    "@prv/=src/modules/PRV/",
    "@rewards/=src/modules/rewards/",
    "@src/=src/",
    "@test/=test/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "pie-proxy/=lib/pie-proxy/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {
    "src/modules/PRV/bitfield.sol": {
      "Bitfields": "0x013b49b72da7f746eec30c7bca848bd788c4fcfe"
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"feeBeneficiary","type":"address"}],"name":"FeeBeneficiarySet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"FeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"governor","type":"address"}],"name":"GovernorSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Withdrawal","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"withdrawalManager","type":"address"}],"name":"WithdrawalManagerSet","type":"event"},{"inputs":[],"name":"AUXO","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"depositFor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"depositForWithSignature","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeBeneficiary","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_auxo","type":"address"},{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"address","name":"_feeBeneficiary","type":"address"},{"internalType":"address","name":"_governor","type":"address"},{"internalType":"address","name":"_withdrawalManager","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"previewWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fee","type":"uint256"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_beneficiary","type":"address"}],"name":"setFeeBeneficiary","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"address","name":"_beneficiary","type":"address"}],"name":"setFeePolicy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_governor","type":"address"}],"name":"setGovernor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_withdrawalManager","type":"address"}],"name":"setWithdrawalManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawalManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

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

Validator Index Block Amount
View All Withdrawals

Txn Hash Block Value Eth2 PubKey Valid
View All Deposits
[ Download: CSV Export  ]

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