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Contract

0x4f9F798218353de62aE4bbd8483373c18300F53f
 

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0x60806040153262332022-08-12 9:29:21782 days ago1660296561IN
 Create: NraeLabSubscriptions
0 ETH0.0167104313.41119782

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Contract Source Code Verified (Exact Match)

Contract Name:
NraeLabSubscriptions

Compiler Version
v0.8.12+commit.f00d7308

Optimization Enabled:
Yes with 600 runs

Other Settings:
default evmVersion
File 1 of 8 : NraeLabSubscriptions.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;

import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/security/Pausable.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import '@openzeppelin/contracts/security/ReentrancyGuard.sol';

/// @title EarnLabs Subscription contract
/// @author 0xQruz
/// @notice Manage EarnLabs Subscriptions

contract NraeLabSubscriptions is Ownable, Pausable, ReentrancyGuard {
    /*///////////////////////////////////////////////////////////////
                             VARIABLES
    //////////////////////////////////////////////////////////////*/
    /// @notice The address of the token contract
    address public TOKEN;

    /// @notice The address of the contract that will be used to verify the passes
    address public VERIFIER;

    /// @notice Mapping of the address to the time of expiration
    mapping(address => uint256) public subscriptions;

    /// @notice address of treasury
    address public TREASURY;

    /// @notice Price of the monthly subscription (in tokens)
    uint256 public MONTHLY_PRICE = 5;

    /// @notice Price of the quarterly subscription (in tokens)
    uint256 public QUARTERLY_PRICE = 12;

    /// @notice Price of the yearly subscription (in tokens)
    uint256 public YEARLY_PRICE = 40;

    /*///////////////////////////////////////////////////////////////
                             CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/
    /// @notice Constructor of the contract
    /// @param _token The address of the token contract
    /// @param _verifier The address of the contract that will be used to verify the passes
    /// @param _treasury The address of the treasury contract
    constructor(
        address _token,
        address _verifier,
        address _treasury
    ) {
        TOKEN = _token;
        VERIFIER = _verifier;
        TREASURY = _treasury;
    }

    /*///////////////////////////////////////////////////////////////
                             PAUSE LOGIC
    //////////////////////////////////////////////////////////////*/

    function pause() external onlyOwner {
        _pause();
    }

    function unpause() external onlyOwner {
        _unpause();
    }

    /*///////////////////////////////////////////////////////////////
                             HELPERS
    //////////////////////////////////////////////////////////////*/

    /// @notice Get the token interface
    function getToken() private view returns (IERC20) {
        return IERC20(TOKEN);
    }

    /// @notice Get length of the subscription type
    function getSubcriptionMonths(uint256 _subType) public pure returns (uint256) {
        if (_subType == 0) return 1;
        else if (_subType == 1) return 3;
        else if (_subType == 2) return 12;
        else return 0;
    }

    /*///////////////////////////////////////////////////////////////
                             SUBSCRIPTION LOGIC
    //////////////////////////////////////////////////////////////*/

    /// @notice Emitted after the owner update the monthly price of a EarnLabs subscription
    /// @param user The authorized user who triggered the update
    /// @param NEW_PRICE The price to subscribe to a EarnLabs pass for 1 month
    event SubscriptionMonthPriceUpdated(address indexed user, uint256 NEW_PRICE);

    /// @notice Emitted after the owner update the quarterly price of a EarnLabs subscription
    /// @param user The authorized user who triggered the update
    /// @param NEW_PRICE The price to subscribe to a EarnLabs pass for 3 months
    event SubscriptionQuarterlyPriceUpdated(address indexed user, uint256 NEW_PRICE);

    /// @notice Emitted after the owner update the yearly price of a EarnLabs subscription
    /// @param user The authorized user who triggered the update
    /// @param NEW_PRICE The price to subscribe to a EarnLabs pass for 1 year
    event SubscriptionYearlyPriceUpdated(address indexed user, uint256 NEW_PRICE);

    /// @notice Emitted after a user has subscribed to a EarnLabs pass
    /// @param user The user who purchased the pass subscription
    /// @param months The amount of month of the subscription
    /// @param price The price paid to subscribe to the pass
    event Subscribed(address indexed user, uint256 months, uint256 price);

    function setSubscriptionMonthlyPrice(uint256 _MONTHLY_PRICE) external onlyOwner {
        require(_MONTHLY_PRICE != 0, 'INVALID_PRICE');
        require(MONTHLY_PRICE != _MONTHLY_PRICE, 'SAME_PRICE');

        MONTHLY_PRICE = _MONTHLY_PRICE;

        emit SubscriptionMonthPriceUpdated(msg.sender, _MONTHLY_PRICE);
    }

    function setSubscriptionQuarterlyPrice(uint256 _QUARTERLY_PRICE) external onlyOwner {
        require(_QUARTERLY_PRICE != 0, 'INVALID_PRICE');
        require(QUARTERLY_PRICE != _QUARTERLY_PRICE, 'SAME_PRICE');

        QUARTERLY_PRICE = _QUARTERLY_PRICE;

        emit SubscriptionQuarterlyPriceUpdated(msg.sender, _QUARTERLY_PRICE);
    }

    function setSubscriptionYearlyPrice(uint256 _YEARLY_PRICE) external onlyOwner {
        require(_YEARLY_PRICE != 0, 'INVALID_PRICE');
        require(YEARLY_PRICE != _YEARLY_PRICE, 'SAME_PRICE');

        YEARLY_PRICE = _YEARLY_PRICE;

        emit SubscriptionYearlyPriceUpdated(msg.sender, _YEARLY_PRICE);
    }

    /// @notice Subscribe to EarnLabs
    /// @param _subType Type of subscription (0: monthly, 1: quarterly, 2: yearly)
    function subscribe(uint256 _subType) external whenNotPaused nonReentrant {
        uint256 months = getSubcriptionMonths(_subType);
        // Check that the user amount of months is valid
        require(months > 0, 'INVALID_SUB_TYPE');
        // check that the user has not an active pass
        require(!hasValidSubscription(msg.sender), 'SUBSCRIPTION_STILL_ACTIVE');
        uint256 totalPrice = 0;
        if (_subType == 0) {
            totalPrice = 1e18 * MONTHLY_PRICE;
        } else if (_subType == 1) {
            totalPrice = 1e18 * QUARTERLY_PRICE;
        } else if (_subType == 2) {
            totalPrice = 1e18 * YEARLY_PRICE;
        }

        // check if the user has sent enough funds to subscribe to the pass
        require(getToken().balanceOf(msg.sender) >= totalPrice, 'INSUFFICIENT_FUNDS');

        // Transfer the funds to the treasury
        bool result = getToken().transferFrom(msg.sender, address(this), totalPrice);
        require(result, 'TRANSFER_FAILED');

        // Update subscriptions
        subscriptions[msg.sender] = block.timestamp + (31 days * months);

        // emit the event
        emit Subscribed(msg.sender, months, totalPrice);
    }

    /// @notice Airdrop function
    /// @param _to The address to send the airdrop to
    /// @param _months The amount of months to airdrop
    function airdrop(address _to, uint256 _months) external nonReentrant onlyOwner {
        // Check that the user amount of months is valid
        require(_months > 0, 'INVALID_SUB_LENGTH');

        // Update subscriptions
        if (subscriptions[_to] < block.timestamp) {
            subscriptions[_to] = block.timestamp + (31 days * _months);
        } else {
            subscriptions[_to] += (31 days * _months);
        }

        emit Subscribed(msg.sender, _months, 0);
    }

    /// @notice Getter function to check validity of subscription
    /// @dev The function will also check if the wallet is holding the EarnLab : Access Pass (ERC721)
    /// @param _user The user to check the validity of the subscription
    /// @return True if the user has a valid subscription, false otherwise
    function hasValidSubscription(address _user) public view returns (bool) {
        return subscriptions[_user] > block.timestamp || IERC721(VERIFIER).balanceOf(_user) != 0;
    }

    /*///////////////////////////////////////////////////////////////
                             TREASURY LOGIC
    //////////////////////////////////////////////////////////////*/

    /// @notice Emitted after the owner pull the funds to the treasury address
    /// @param user The authorized user who triggered the withdraw
    /// @param treasury The treasury address to which the funds have been sent
    /// @param amount The amount withdrawn
    event TreasuryWithdraw(address indexed user, address treasury, uint256 amount);

    /// @notice Emitted after the owner pull the funds to the treasury address
    /// @param user The authorized user who triggered the withdraw
    /// @param newTreasury The new treasury address
    event TreasuryUpdated(address indexed user, address newTreasury);

    function setTreasury(address _treasury) external onlyOwner {
        // check that the new treasury address is valid
        require(_treasury != address(0), 'INVALID_TREASURY_ADDRESS');
        require(TREASURY != _treasury, 'SAME_TREASURY_ADDRESS');

        // update the treasury
        TREASURY = _treasury;

        // emit the event
        emit TreasuryUpdated(msg.sender, _treasury);
    }

    function withdrawTreasury() external onlyOwner {
        // calc the amount of balance that can be sent to the treasury
        uint256 amount = getToken().balanceOf(address(this));
        require(amount != 0, 'NO_TREASURY');

        // emit the event
        emit TreasuryWithdraw(msg.sender, TREASURY, amount);

        // Transfer to the treasury
        bool success = getToken().transfer(TREASURY, amount);
        require(success, 'WITHDRAW_FAIL');
    }
}

File 2 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

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

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

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

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

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

File 3 of 8 : Pausable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

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

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

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

    bool private _paused;

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

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

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

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

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

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

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

File 4 of 8 : IERC20.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 IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

File 5 of 8 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

File 6 of 8 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

File 7 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

File 8 of 8 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 600
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_verifier","type":"address"},{"internalType":"address","name":"_treasury","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"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":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"months","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"Subscribed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"NEW_PRICE","type":"uint256"}],"name":"SubscriptionMonthPriceUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"NEW_PRICE","type":"uint256"}],"name":"SubscriptionQuarterlyPriceUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"NEW_PRICE","type":"uint256"}],"name":"SubscriptionYearlyPriceUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address","name":"newTreasury","type":"address"}],"name":"TreasuryUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address","name":"treasury","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TreasuryWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"MONTHLY_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"QUARTERLY_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TOKEN","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TREASURY","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERIFIER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"YEARLY_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_months","type":"uint256"}],"name":"airdrop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_subType","type":"uint256"}],"name":"getSubcriptionMonths","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"hasValidSubscription","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_MONTHLY_PRICE","type":"uint256"}],"name":"setSubscriptionMonthlyPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_QUARTERLY_PRICE","type":"uint256"}],"name":"setSubscriptionQuarterlyPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_YEARLY_PRICE","type":"uint256"}],"name":"setSubscriptionYearlyPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasury","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_subType","type":"uint256"}],"name":"subscribe","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"subscriptions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000f4f821e7970cd66da7de039a3f3b0ac0ee6358dd000000000000000000000000f924b2fbdb7de04a4628e5dfe0bbd21ca644979f000000000000000000000000f924b2fbdb7de04a4628e5dfe0bbd21ca644979f

-----Decoded View---------------
Arg [0] : _token (address): 0xf4F821e7970CD66DA7dE039a3f3B0AC0eE6358dD
Arg [1] : _verifier (address): 0xF924B2fbDB7DE04A4628e5dFE0bbd21cA644979F
Arg [2] : _treasury (address): 0xF924B2fbDB7DE04A4628e5dFE0bbd21cA644979F

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000f4f821e7970cd66da7de039a3f3b0ac0ee6358dd
Arg [1] : 000000000000000000000000f924b2fbdb7de04a4628e5dfe0bbd21ca644979f
Arg [2] : 000000000000000000000000f924b2fbdb7de04a4628e5dfe0bbd21ca644979f


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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.