Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.22;

import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {Ownable, Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
import {TUP} from "./TUP.sol";
import {TDN} from "./TDN.sol";

/**
 * @title Immutable Ratings
 * @author immutable-ratings
 * @notice Core controller contract for the Immutable Ratings platform
 */
contract ImmutableRatings is Ownable2Step, ReentrancyGuard {
    using SafeERC20 for IERC20;

    /// @dev The TUP token. Represents upvotes.
    TUP public immutable tokenUp;

    /// @dev The TDN token. Represents downvotes.
    TDN public immutable tokenDown;

    /// @dev This contract is immutable and non-upgradeable.
    /// Further versions of this contract will be deployed independently.
    string public constant VERSION = "1.0.0";

    /// @dev Seed for market creation
    string public constant SEED = "Immutable_Ratings_by_GM_EB_MB";

    /// @dev The minimum amount of tokens that can be rated
    uint256 public constant MIN_RATING_AMOUNT = 1000 ether;

    /// @dev The price of a rating in ether
    uint256 public ratingPrice = 0.00000007 ether;

    /// @dev Address of the fee receiver
    address public receiver;

    /// @dev Whether the contract is paused
    bool public isPaused = false;

    /// @dev Mapping of active markets to their URLs
    mapping(address market => string url) public marketToUrl;

    /// @dev Mapping of URLs to their markets
    mapping(string url => address market) public urlToMarket;

    /// @dev Defines the structure of a rating request
    struct MarketRating {
        string url;
        uint256 amount;
    }

    // Events
    event MarketCreated(address indexed marketAddress, string url);
    event RatingUpCreated(address indexed user, address indexed market, uint256 amount);
    event RatingDownCreated(address indexed user, address indexed market, uint256 amount);
    event ReceiverUpdated(address indexed newReceiver);
    event Paused(bool isPaused);

    // Errors
    error ZeroAddress();
    error EmptyURL();
    error MarketAlreadyExists(string url);
    error InvalidRatingAmount();
    error InsufficientPayment();
    error ContractPaused();

    /**
     * @dev Enforces that a function can only be called if the contract is not paused
     */
    modifier notPaused() {
        if (isPaused) revert ContractPaused();
        _;
    }

    /**
     * @param _tokenUp The address of the TUP token
     * @param _tokenDown The address of the TDN token
     * @param _receiver The address of the fee receiver
     */
    constructor(address _tokenUp, address _tokenDown, address _receiver) Ownable(msg.sender) {
        if (_tokenUp == address(0) || _tokenDown == address(0) || _receiver == address(0)) revert ZeroAddress();

        tokenUp = TUP(_tokenUp);
        tokenDown = TDN(_tokenDown);
        receiver = _receiver;
    }

    /**
     * Returns the total number of immutables ratings (IRs) for a user
     * @param user The address of the user
     * @return total The total number of ratings
     */
    function getUserRatings(address user) external view returns (uint256 total) {
        return tokenUp.upvotes(user) + tokenDown.downvotes(user);
    }

    /**
     * @notice Sets the fee receiver address
     * @param _receiver The address of the fee receiver
     */
    function setReceiver(address _receiver) external onlyOwner {
        receiver = _receiver;
        emit ReceiverUpdated(_receiver);
    }

    /**
     * @notice Pauses or unpauses the contract
     * @param _isPaused Whether to pause the contract
     */
    function setIsPaused(bool _isPaused) external onlyOwner {
        isPaused = _isPaused;
        emit Paused(_isPaused);
    }

    /**
     * @notice Creates a new market for a URL
     * @param url The URL for the market
     */
    function createMarket(string calldata url) external notPaused {
        if (urlToMarket[url] != address(0)) revert MarketAlreadyExists(url);
        _createMarket(url);
    }

    /**
     * @notice Gets the market address for a URL
     * @param url The URL for the market
     * @return marketAddress The address of the created market
     */
    function getMarketAddress(string calldata url) external pure returns (address) {
        return _createMarketAddress(url);
    }

    /**
     * @dev Creates a new market for a URL. It is assumed that the URL has already been validated and normalized
     * @param url The URL for the market.
     * @return marketAddress The address of the created market
     */
    function _createMarket(string calldata url) internal returns (address marketAddress) {
        marketAddress = _createMarketAddress(url);
        marketToUrl[marketAddress] = url;
        urlToMarket[url] = marketAddress;

        emit MarketCreated(marketAddress, url);
    }

    /**
     * @dev Returns a market if it exists, otherwise creates a new one
     * @param url The URL for the market
     * @return marketAddress The address of the created market
     */
    function _getMarket(string calldata url) internal returns (address marketAddress) {
        marketAddress = urlToMarket[url];
        if (marketAddress == address(0)) {
            marketAddress = _createMarket(url);
        }
    }

    /**
     * @notice Creates a new market for a URL
     * @dev It is assumed that the URL has already been validated and normalized
     * @param url The URL for the market
     * @return marketAddress The address of the created market
     */
    function _createMarketAddress(string calldata url) internal pure returns (address) {
        if (bytes(url).length == 0) revert EmptyURL();

        return address(uint160(uint256(keccak256(abi.encodePacked(SEED, url)))));
    }

    /**
     * @notice Creates an up rating for a single market
     * @param rating The rating to create
     */
    function createUpRating(MarketRating calldata rating) external payable nonReentrant notPaused {
        _validateRating(rating);
        _createUpRating(msg.sender, rating);
        _processPayment(rating.amount);
    }

    /**
     * @notice Creates a down rating for a single market
     * @param rating The rating to create
     */
    function createDownRating(MarketRating calldata rating) external payable nonReentrant notPaused {
        _validateRating(rating);
        _createDownRating(msg.sender, rating);
        _processPayment(rating.amount);
    }

    /**
     * @dev Creates an UP rating. Does not validate the rating amount or user count.
     * @param rating The rating to create
     */
    function _createUpRating(address from, MarketRating calldata rating) internal {
        address marketAddress = _getMarket(rating.url);
        tokenUp.mint(from, marketAddress, rating.amount);
        emit RatingUpCreated(from, marketAddress, rating.amount);
    }

    /**
     * @dev Creates a DOWN rating. Does not validate the rating amount or user count.
     * @param rating The rating to create
     */
    function _createDownRating(address from, MarketRating calldata rating) internal {
        address marketAddress = _getMarket(rating.url);
        tokenDown.mint(from, marketAddress, rating.amount);
        emit RatingDownCreated(from, marketAddress, rating.amount);
    }

    /**
     * @dev Validates a rating is correctly formatted
     *  - Amount is not 0
     *  - Amount is a multiple of 1 ether (prevents decimal ratings)
     * @param rating The rating to validate
     */
    function _validateRating(MarketRating calldata rating) internal pure {
        if (rating.amount % 1 ether != 0 || rating.amount < MIN_RATING_AMOUNT) {
            revert InvalidRatingAmount();
        }
    }

    /**
     * @notice Preview the payment for a rating
     * @param amount The amount of tokens to rate
     * @return price The price of the rating
     */
    function previewPayment(uint256 amount) external view returns (uint256) {
        return _getRatingPrice(amount);
    }

    /**
     * @notice Gets the market price for a rating based on the amount of tokens
     * @param amount The amount of tokens to rate
     * @return price The price of the rating
     */
    function _getRatingPrice(uint256 amount) internal view returns (uint256) {
        return (amount * ratingPrice) / 1 ether;
    }

    /**
     * @notice Processes the payment for a rating, including funds distribution and excess refund
     * @param amount The amount of tokens to rate
     */
    function _processPayment(uint256 amount) internal {
        uint256 price = _getRatingPrice(amount);
        if (msg.value < price) revert InsufficientPayment();
        _refundExcessPayment(msg.value - price);
        _distributePayment(price);
    }

    /**
     * @notice Refunds excess amount to the caller
     * @param amount The amount of tokens to refund
     */
    function _refundExcessPayment(uint256 amount) internal {
        if (amount > 0) {
            payable(msg.sender).transfer(amount);
        }
    }

    /**
     * @notice Distributes the payment to the receiver
     * @param amount The amount of tokens to distribute
     */
    function _distributePayment(uint256 amount) internal {
        payable(receiver).transfer(amount);
    }

    /**
     * @notice Recovers ERC20 tokens from the contract
     * @param tokenAddress The address of the token to recover
     * @param recipient The address of the recipient
     */
    function recoverERC20(address tokenAddress, address recipient) external onlyOwner {
        if (tokenAddress == address(0) || recipient == address(0)) revert ZeroAddress();
        IERC20(tokenAddress).safeTransfer(recipient, IERC20(tokenAddress).balanceOf(address(this)));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol)

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

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

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

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

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

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

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

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

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

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

        _revokeRole(role, callerConfirmation);
    }

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

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (access/IAccessControl.sol)

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC-165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call. This account bears the admin role (for the granted role).
     * Expected in cases where the role was granted using the internal {AccessControl-_grantRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

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

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

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

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

import {Ownable} from "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * This extension of the {Ownable} contract includes a two-step mechanism to transfer
 * ownership, where the new owner must call {acceptOwnership} in order to replace the
 * old one. This can help prevent common mistakes, such as transfers of ownership to
 * incorrect accounts, or to contracts that are unable to interact with the
 * permission system.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

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

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     *
     * Setting `newOwner` to the zero address is allowed; this can be used to cancel an initiated ownership transfer.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.2.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

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

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

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

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.2.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @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 EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

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

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // 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;
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.22;

import {ERC20, IERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

/**
 * @title Thumbs Down (TDN)
 * @author immutable-ratings
 */
contract TDN is ERC20, AccessControl {
    using SafeERC20 for IERC20;

    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");

    error ZeroAddress();

    /// @dev The number of downvotes that a user has created
    mapping(address user => uint256 downvotes) public downvotes;

    constructor() ERC20("Thumbs Down", "TDN") {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _setRoleAdmin(MINTER_ROLE, DEFAULT_ADMIN_ROLE);
    }

    /**
     * @notice Mints token to the given address
     * @param minter The address of the user minting the tokens
     * @param to The address to mint the tokens to
     * @param amount The amount of tokens to mint
     */
    function mint(address minter, address to, uint256 amount) public onlyRole(MINTER_ROLE) {
        _mint(to, amount);
        downvotes[minter] += amount;
    }

    /**
     * @notice Recovers ERC20 tokens from the contract
     * @param tokenAddress The address of the token to recover
     * @param recipient The address of the recipient
     */
    function recoverERC20(address tokenAddress, address recipient) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (tokenAddress == address(0) || recipient == address(0)) revert ZeroAddress();
        IERC20(tokenAddress).safeTransfer(recipient, IERC20(tokenAddress).balanceOf(address(this)));
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.22;

import {ERC20, IERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

/**
 * @title Thumbs Up (TUP)
 * @author immutable-ratings
 */
contract TUP is ERC20, AccessControl {
    using SafeERC20 for IERC20;
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");

    error ZeroAddress();

    /// @dev The number of upvotes that a user has created
    mapping(address user => uint256 upvotes) public upvotes;

    constructor() ERC20("Thumbs Up", "TUP") {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _setRoleAdmin(MINTER_ROLE, DEFAULT_ADMIN_ROLE);
    }

    /**
     * @notice Mints token to the given address
     * @param minter The address of the user minting the tokens
     * @param to The address to mint the tokens to
     * @param amount The amount of tokens to mint
     */
    function mint(address minter, address to, uint256 amount) public onlyRole(MINTER_ROLE) {
        _mint(to, amount);
        upvotes[minter] += amount;
    }

    /**
     * @notice Recovers ERC20 tokens from the contract
     * @param tokenAddress The address of the token to recover
     * @param recipient The address of the recipient
     */
    function recoverERC20(address tokenAddress, address recipient) external onlyRole(DEFAULT_ADMIN_ROLE) {
        if (tokenAddress == address(0) || recipient == address(0)) revert ZeroAddress();
        IERC20(tokenAddress).safeTransfer(recipient, IERC20(tokenAddress).balanceOf(address(this)));
    }
}

{
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_tokenUp","type":"address"},{"internalType":"address","name":"_tokenDown","type":"address"},{"internalType":"address","name":"_receiver","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ContractPaused","type":"error"},{"inputs":[],"name":"EmptyURL","type":"error"},{"inputs":[],"name":"InsufficientPayment","type":"error"},{"inputs":[],"name":"InvalidRatingAmount","type":"error"},{"inputs":[{"internalType":"string","name":"url","type":"string"}],"name":"MarketAlreadyExists","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"marketAddress","type":"address"},{"indexed":false,"internalType":"string","name":"url","type":"string"}],"name":"MarketCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isPaused","type":"bool"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"market","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RatingDownCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"market","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RatingUpCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newReceiver","type":"address"}],"name":"ReceiverUpdated","type":"event"},{"inputs":[],"name":"MIN_RATING_AMOUNT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SEED","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"string","name":"url","type":"string"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct ImmutableRatings.MarketRating","name":"rating","type":"tuple"}],"name":"createDownRating","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"url","type":"string"}],"name":"createMarket","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"string","name":"url","type":"string"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct ImmutableRatings.MarketRating","name":"rating","type":"tuple"}],"name":"createUpRating","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"url","type":"string"}],"name":"getMarketAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserRatings","outputs":[{"internalType":"uint256","name":"total","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isPaused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"market","type":"address"}],"name":"marketToUrl","outputs":[{"internalType":"string","name":"url","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"previewPayment","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ratingPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"receiver","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"},{"internalType":"address","name":"recipient","type":"address"}],"name":"recoverERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_isPaused","type":"bool"}],"name":"setIsPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_receiver","type":"address"}],"name":"setReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenDown","outputs":[{"internalType":"contract TDN","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenUp","outputs":[{"internalType":"contract TUP","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"url","type":"string"}],"name":"urlToMarket","outputs":[{"internalType":"address","name":"market","type":"address"}],"stateMutability":"view","type":"function"}]

60c060405264104c533c006003556004805460ff60a01b191690553480156200002757600080fd5b5060405162001816380380620018168339810160408190526200004a916200018c565b33806200007157604051631e4fbdf760e01b81526000600482015260240160405180910390fd5b6200007c8162000101565b5060016002556001600160a01b0383161580620000a057506001600160a01b038216155b80620000b357506001600160a01b038116155b15620000d25760405163d92e233d60e01b815260040160405180910390fd5b6001600160a01b0392831660805290821660a052600480546001600160a01b03191691909216179055620001d6565b600180546001600160a01b03191690556200011c816200011f565b50565b600080546001600160a01b038381166001600160a01b0319831681178455604051919092169283917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e09190a35050565b80516001600160a01b03811681146200018757600080fd5b919050565b600080600060608486031215620001a257600080fd5b620001ad846200016f565b9250620001bd602085016200016f565b9150620001cd604085016200016f565b90509250925092565b60805160a0516115fe6200021860003960008181610395015281816109b30152610ebe0152600081816102c101528181610a3f0152610b7101526115fe6000f3fe60806040526004361061018b5760003560e01c80638da5cb5b116100d6578063e30c39781161007f578063f7260d3e11610059578063f7260d3e146104ba578063fbd8cc4c146104da578063ffa1ad74146104f057600080fd5b8063e30c39781461045c578063f2fde38b1461047a578063f50336f91461049a57600080fd5b8063a00c582e116100b0578063a00c582e146103f8578063b187bd2614610418578063c4baaa9f1461044957600080fd5b80638da5cb5b146103655780639c25cc62146103835780639f8472d4146103b757600080fd5b806354888f5511610138578063718da7ee11610112578063718da7ee1461031057806379ba509714610330578063886f039a1461034557600080fd5b806354888f551461028f5780636bfc5c6e146102af578063715018a6146102fb57600080fd5b806323da93171161016957806323da93171461023a578063240976bf1461024f57806350a1a8681461026f57600080fd5b806303994dc5146101905780630edc4737146101c657806317da760a1461020f575b600080fd5b34801561019c57600080fd5b506101b06101ab3660046110f3565b610539565b6040516101bd9190611132565b60405180910390f35b3480156101d257600080fd5b506101b06040518060400160405280601d81526020017f496d6d757461626c655f526174696e67735f62795f474d5f45425f4d4200000081525081565b34801561021b57600080fd5b5061022c683635c9adc5dea0000081565b6040519081526020016101bd565b61024d610248366004611165565b6105d3565b005b34801561025b57600080fd5b5061024d61026a3660046111a0565b610633565b34801561027b57600080fd5b5061022c61028a3660046111c2565b6106ae565b34801561029b57600080fd5b5061024d6102aa3660046111db565b6106bf565b3480156102bb57600080fd5b506102e37f000000000000000000000000000000000000000000000000000000000000000081565b6040516001600160a01b0390911681526020016101bd565b34801561030757600080fd5b5061024d61075a565b34801561031c57600080fd5b5061024d61032b3660046110f3565b61076e565b34801561033c57600080fd5b5061024d6107c0565b34801561035157600080fd5b5061024d61036036600461124d565b610801565b34801561037157600080fd5b506000546001600160a01b03166102e3565b34801561038f57600080fd5b506102e37f000000000000000000000000000000000000000000000000000000000000000081565b3480156103c357600080fd5b506102e36103d2366004611296565b80516020818301810180516006825292820191909301209152546001600160a01b031681565b34801561040457600080fd5b506102e36104133660046111db565b6108c7565b34801561042457600080fd5b5060045461043990600160a01b900460ff1681565b60405190151581526020016101bd565b61024d610457366004611165565b6108da565b34801561046857600080fd5b506001546001600160a01b03166102e3565b34801561048657600080fd5b5061024d6104953660046110f3565b610920565b3480156104a657600080fd5b5061022c6104b53660046110f3565b610991565b3480156104c657600080fd5b506004546102e3906001600160a01b031681565b3480156104e657600080fd5b5061022c60035481565b3480156104fc57600080fd5b506101b06040518060400160405280600581526020017f312e302e3000000000000000000000000000000000000000000000000000000081525081565b6005602052600090815260409020805461055290611347565b80601f016020809104026020016040519081016040528092919081815260200182805461057e90611347565b80156105cb5780601f106105a0576101008083540402835291602001916105cb565b820191906000526020600020905b8154815290600101906020018083116105ae57829003601f168201915b505050505081565b6105db610ab4565b600454600160a01b900460ff16156106065760405163ab35696f60e01b815260040160405180910390fd5b61060f81610adc565b6106193382610b29565b6106268160200135610c25565b6106306001600255565b50565b61063b610c6e565b60048054821515600160a01b027fffffffffffffffffffffff00ffffffffffffffffffffffffffffffffffffffff9091161790556040517f0e2fb031ee032dc02d8011dc50b816eb450cf856abd8261680dac74f72165bd2906106a390831515815260200190565b60405180910390a150565b60006106b982610c9b565b92915050565b600454600160a01b900460ff16156106ea5760405163ab35696f60e01b815260040160405180910390fd5b60006001600160a01b031660068383604051610707929190611381565b908152604051908190036020019020546001600160a01b03161461074b5781816040516337afdd7160e01b8152600401610742929190611391565b60405180910390fd5b6107558282610cbe565b505050565b610762610c6e565b61076c6000610d70565b565b610776610c6e565b600480546001600160a01b0319166001600160a01b0383169081179091556040517f75fd3aa5d9b6e2a8a9d8894008c9263200713f4b1fa9113665e09ceac002774690600090a250565b60015433906001600160a01b031681146107f85760405163118cdaa760e01b81526001600160a01b0382166004820152602401610742565b61063081610d70565b610809610c6e565b6001600160a01b038216158061082657506001600160a01b038116155b156108445760405163d92e233d60e01b815260040160405180910390fd5b6040516370a0823160e01b81523060048201526108c39082906001600160a01b038516906370a0823190602401602060405180830381865afa15801561088e573d6000803e3d6000fd5b505050506040513d601f19601f820116820180604052508101906108b291906113c0565b6001600160a01b0385169190610d89565b5050565b60006108d38383610df0565b9392505050565b6108e2610ab4565b600454600160a01b900460ff161561090d5760405163ab35696f60e01b815260040160405180910390fd5b61091681610adc565b6106193382610e7b565b610928610c6e565b600180546001600160a01b0383166001600160a01b031990911681179091556109596000546001600160a01b031690565b6001600160a01b03167f38d16b8cac22d99fc7c124b9cd0de2d3fa1faef420bfe791d8c362d765e2270060405160405180910390a350565b6040516324abc0b960e01b81526001600160a01b0382811660048301526000917f0000000000000000000000000000000000000000000000000000000000000000909116906324abc0b990602401602060405180830381865afa1580156109fc573d6000803e3d6000fd5b505050506040513d601f19601f82011682018060405250810190610a2091906113c0565b60405163daf4906d60e01b81526001600160a01b0384811660048301527f0000000000000000000000000000000000000000000000000000000000000000169063daf4906d90602401602060405180830381865afa158015610a86573d6000803e3d6000fd5b505050506040513d601f19601f82011682018060405250810190610aaa91906113c0565b6106b991906113ef565b6002805403610ad657604051633ee5aeb560e01b815260040160405180910390fd5b60028055565b610af2670de0b6b3a76400006020830135611418565b151580610b0b5750683635c9adc5dea000008160200135105b156106305760405163a31fbaaf60e01b815260040160405180910390fd5b6000610b3d610b38838061142c565b610f65565b604051636361ddf360e11b81526001600160a01b0385811660048301528083166024830152602085013560448301529192507f00000000000000000000000000000000000000000000000000000000000000009091169063c6c3bbe690606401600060405180830381600087803b158015610bb757600080fd5b505af1158015610bcb573d6000803e3d6000fd5b50505050806001600160a01b0316836001600160a01b03167f93a8393c8cf19d12c7dec41659d1c180332cccdddc65483285d6fb00d10166628460200135604051610c1891815260200190565b60405180910390a3505050565b6000610c3082610c9b565b905080341015610c535760405163cd1c886760e01b815260040160405180910390fd5b610c65610c60823461147a565b610fa3565b6108c381610fd6565b6000546001600160a01b0316331461076c5760405163118cdaa760e01b8152336004820152602401610742565b6000670de0b6b3a764000060035483610cb4919061148d565b6106b991906114a4565b6000610cca8383610df0565b6001600160a01b0381166000908152600560205260409020909150610cf0838583611508565b508060068484604051610d04929190611381565b90815260405190819003602001812080546001600160a01b039384166001600160a01b0319909116179055908216907f89e2b56dfb4365b59dc3a37aaf819ce4937e48be6ab23686edcecacf0124ae0390610d629086908690611391565b60405180910390a292915050565b600180546001600160a01b031916905561063081611010565b604080516001600160a01b038416602482015260448082018490528251808303909101815260649091019091526020810180517bffffffffffffffffffffffffffffffffffffffffffffffffffffffff1663a9059cbb60e01b179052610755908490611060565b6000818103610e1257604051631662e66b60e01b815260040160405180910390fd5b6040518060400160405280601d81526020017f496d6d757461626c655f526174696e67735f62795f474d5f45425f4d420000008152508383604051602001610e5c939291906115c9565b60408051601f1981840301815291905280516020909101209392505050565b6000610e8a610b38838061142c565b604051636361ddf360e11b81526001600160a01b0385811660048301528083166024830152602085013560448301529192507f00000000000000000000000000000000000000000000000000000000000000009091169063c6c3bbe690606401600060405180830381600087803b158015610f0457600080fd5b505af1158015610f18573d6000803e3d6000fd5b50505050806001600160a01b0316836001600160a01b03167f4b713de7cd2c27b9508eb36ff702536841b4eac8273c0683243fde092ff5a0bd8460200135604051610c1891815260200190565b600060068383604051610f79929190611381565b908152604051908190036020019020546001600160a01b03169050806106b9576108d38383610cbe565b801561063057604051339082156108fc029083906000818181858888f193505050501580156108c3573d6000803e3d6000fd5b6004546040516001600160a01b039091169082156108fc029083906000818181858888f193505050501580156108c3573d6000803e3d6000fd5b600080546001600160a01b038381166001600160a01b0319831681178455604051919092169283917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e09190a35050565b600080602060008451602086016000885af180611083576040513d6000823e3d81fd5b50506000513d9150811561109b5780600114156110a8565b6001600160a01b0384163b155b156110d157604051635274afe760e01b81526001600160a01b0385166004820152602401610742565b50505050565b80356001600160a01b03811681146110ee57600080fd5b919050565b60006020828403121561110557600080fd5b6108d3826110d7565b60005b83811015611129578181015183820152602001611111565b50506000910152565b602081526000825180602084015261115181604085016020870161110e565b601f01601f19169190910160400192915050565b60006020828403121561117757600080fd5b813567ffffffffffffffff81111561118e57600080fd5b8201604081850312156108d357600080fd5b6000602082840312156111b257600080fd5b813580151581146108d357600080fd5b6000602082840312156111d457600080fd5b5035919050565b600080602083850312156111ee57600080fd5b823567ffffffffffffffff8082111561120657600080fd5b818501915085601f83011261121a57600080fd5b81358181111561122957600080fd5b86602082850101111561123b57600080fd5b60209290920196919550909350505050565b6000806040838503121561126057600080fd5b611269836110d7565b9150611277602084016110d7565b90509250929050565b634e487b7160e01b600052604160045260246000fd5b6000602082840312156112a857600080fd5b813567ffffffffffffffff808211156112c057600080fd5b818401915084601f8301126112d457600080fd5b8135818111156112e6576112e6611280565b604051601f8201601f19908116603f0116810190838211818310171561130e5761130e611280565b8160405282815287602084870101111561132757600080fd5b826020860160208301376000928101602001929092525095945050505050565b600181811c9082168061135b57607f821691505b60208210810361137b57634e487b7160e01b600052602260045260246000fd5b50919050565b8183823760009101908152919050565b60208152816020820152818360408301376000818301604090810191909152601f909201601f19160101919050565b6000602082840312156113d257600080fd5b5051919050565b634e487b7160e01b600052601160045260246000fd5b808201808211156106b9576106b96113d9565b634e487b7160e01b600052601260045260246000fd5b60008261142757611427611402565b500690565b6000808335601e1984360301811261144357600080fd5b83018035915067ffffffffffffffff82111561145e57600080fd5b60200191503681900382131561147357600080fd5b9250929050565b818103818111156106b9576106b96113d9565b80820281158282048414176106b9576106b96113d9565b6000826114b3576114b3611402565b500490565b601f821115610755576000816000526020600020601f850160051c810160208610156114e15750805b601f850160051c820191505b81811015611500578281556001016114ed565b505050505050565b67ffffffffffffffff83111561152057611520611280565b6115348361152e8354611347565b836114b8565b6000601f84116001811461156857600085156115505750838201355b600019600387901b1c1916600186901b1783556115c2565b600083815260209020601f19861690835b828110156115995786850135825560209485019460019092019101611579565b50868210156115b65760001960f88860031b161c19848701351681555b505060018560011b0183555b5050505050565b600084516115db81846020890161110e565b820183858237600093019283525090939250505056fea164736f6c6343000816000a000000000000000000000000e6d3d08a6519f1346344bba0f25a6fe7ab50f06c0000000000000000000000004461a66a7b5ecdbbe0bbbf09b41816f94c4834b2000000000000000000000000c1ec5b421905290f477c741adf97c062921aa18a

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

000000000000000000000000e6d3d08a6519f1346344bba0f25a6fe7ab50f06c0000000000000000000000004461a66a7b5ecdbbe0bbbf09b41816f94c4834b2000000000000000000000000c1ec5b421905290f477c741adf97c062921aa18a

-----Decoded View---------------
Arg [0] : _tokenUp (address): 0xE6D3d08a6519F1346344bba0F25A6fE7aB50F06C
Arg [1] : _tokenDown (address): 0x4461a66A7B5eCdBBE0bbBf09b41816f94c4834b2
Arg [2] : _receiver (address): 0xc1Ec5b421905290F477C741ADf97c062921AA18A

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000e6d3d08a6519f1346344bba0f25a6fe7ab50f06c
Arg [1] : 0000000000000000000000004461a66a7b5ecdbbe0bbbf09b41816f94c4834b2
Arg [2] : 000000000000000000000000c1ec5b421905290f477c741adf97c062921aa18a