Amoy Testnet

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0xF5525a4C7a0c8f8bbDe36539c6b01D077242b96d

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81022932024-06-10 10:46:30243 days ago1718016390  Contract Creation0 POL
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Contract Source Code Verified (Exact Match)

Contract Name:
FreeBet

Compiler Version
v0.8.16+commit.07a7930e

Optimization Enabled:
Yes with 2 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 30 : FreeBet.sol
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.9;

import "../interface/IAccess.sol";
import "../interface/ILP.sol";
import "../interface/IOwnable.sol";
import "../interface/ICoreBase.sol";
import "../libraries/FixedMath.sol";
import "../utils/OwnableUpgradeable.sol";
import "@openzeppelin/contracts/proxy/beacon/BeaconProxy.sol";
import "@openzeppelin/contracts/proxy/beacon/UpgradeableBeacon.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@uniswap/lib/contracts/libraries/TransferHelper.sol";

interface IFreeBet is IOwnable {
    struct FreeBet_ {
        address owner;
        address core;
        uint256 azuroBetId;
        uint128 amount;
        uint128 payout;
        uint256 conditionId;
        uint64 outcomeId;
        uint64 odds;
    }

    struct FreeBetData {
        uint256 chainId;
        uint256 freeBetId;
        address owner;
        uint128 amount;
        uint64 minOdds;
        uint64 expiresAt;
    }

    event AffiliateChanged(address newAffiliate);
    event BettorWin(
        address indexed core,
        address indexed bettor,
        uint256 indexed freeBetId,
        uint256 amount
    );
    event NewBet(
        uint256 indexed freeBetId,
        address core,
        address indexed bettor,
        uint256 indexed azuroBetId,
        uint128 amount,
        uint64 minOdds,
        uint64 expiresAt
    );
    event LpChanged(address indexed newLp);
    event ManagerChanged(address newManager);
    event PayoutsResolved(uint256[] azuroBetId);

    error AlreadyResolved();
    error BetAlreadyClaimed();
    error BetDoesNotExist();
    error BetExpired();
    error InsufficientContractBalance();
    error IncorrectChainId();
    error InvalidSignature();
    error OnlyFreeBetOwner();
    error OnlyManager();
    error SmallMinOdds();

    function initialize(
        address lpAddress,
        address affiliate,
        address manager
    ) external;
}

/// @title This tool enables the granting of free bets to any user through an airdrop distribution using a Merkle tree.
contract FreeBet is OwnableUpgradeable, IFreeBet {
    using ECDSA for bytes32;
    using FixedMath for *;

    mapping(uint256 => FreeBet_) public freeBets;

    uint256 public lockedReserve;

    address public affiliate;
    address public manager;
    address public token;

    ILP public lp;

    /**
     * @notice Throw if caller is not a Manager.
     */
    modifier onlyManager() {
        if (msg.sender != manager) revert OnlyManager();
        _;
    }

    receive() external payable {
        require(msg.sender == token);
    }

    function initialize(
        address lpAddress,
        address affiliate_,
        address manager_
    ) external initializer {
        __Ownable_init();

        ILP lp_ = ILP(lpAddress);
        token = lp_.token();
        lp = lp_;
        affiliate = affiliate_;
        manager = manager_;
    }

    /**
     * @notice Owner: Set affiliate address for each bet made through free bet redeem.
     */
    function setAffiliate(address affiliate_) external onlyOwner {
        affiliate = affiliate_;
        emit AffiliateChanged(affiliate_);
    }

    /**
     * @notice Owner: Bound the contract with Liquidity Pool 'lp'.
     */
    function setLp(address lp_) external onlyOwner {
        lp = ILP(lp_);
        emit LpChanged(lp_);
    }

    /**
     * @notice Owner: Set a manager. The manager is responsible for issuing new free bets and withdrawing funds locked
     *         in the smart contract
     */
    function setManager(address manager_) external onlyOwner {
        manager = manager_;
        emit ManagerChanged(manager_);
    }

    /**
     * @notice Withdraw unlocked token reserves.
     * @param  amount amount to withdraw
     */
    function withdrawReserve(uint256 amount) external onlyManager {
        _checkInsufficient(amount);

        TransferHelper.safeTransfer(token, msg.sender, amount);
    }

    /**
     * @notice Make free bet.
     * @notice See {ILP-bet}.
     * @param  freeBetData the Manager's response that contains the free bet data as well as additional
     *         data necessary to ensure that the manager's signature will not be reused for another bet.
     * @param  signature the Manager's signature on `freeBetData`.
     * @return azuroBetId Minted AzuroBet token ID
     */
    function bet(
        FreeBetData calldata freeBetData,
        bytes memory signature,
        address core,
        uint256 conditionId,
        uint64 outcomeId,
        uint64 deadline,
        uint64 minOdds
    ) external returns (uint256 azuroBetId) {
        _verifySignature(freeBetData, signature);
        _checkInsufficient(freeBetData.amount);

        FreeBet_ storage freeBet = freeBets[freeBetData.freeBetId];
        if (freeBetData.chainId != _getChainId()) revert IncorrectChainId();
        if (freeBetData.owner != msg.sender) revert OnlyFreeBetOwner();
        if (freeBetData.expiresAt <= block.timestamp) revert BetExpired();
        if (freeBet.owner != address(0)) revert BetAlreadyClaimed();
        if (minOdds < freeBetData.minOdds) revert SmallMinOdds();

        freeBet.owner = msg.sender;
        freeBet.core = core;
        freeBet.amount = freeBetData.amount;
        freeBet.conditionId = conditionId;
        freeBet.outcomeId = outcomeId;
        freeBet.odds = ICoreBase(core).calcOdds(
            conditionId,
            freeBetData.amount,
            outcomeId
        );

        TransferHelper.safeApprove(token, address(lp), freeBetData.amount);
        azuroBetId = lp.bet(
            core,
            freeBetData.amount,
            deadline,
            IBet.BetData(affiliate, minOdds, abi.encode(conditionId, outcomeId))
        );
        freeBet.azuroBetId = azuroBetId;

        emit NewBet(
            freeBetData.freeBetId,
            core,
            msg.sender,
            azuroBetId,
            freeBetData.amount,
            freeBetData.minOdds,
            freeBetData.expiresAt
        );
    }

    /**
     * @notice Resolve the payout for already redeemed free bets with IDs `freeBetIds`.
     */
    function resolvePayout(uint256[] calldata freeBetIds) external {
        uint256 length = freeBetIds.length;
        for (uint256 i = 0; i < length; ++i) {
            uint256 freeBetId = freeBetIds[i];
            uint256 payout = _resolvePayout(freeBetId);
            freeBets[freeBetId].payout = uint128(payout);
            lockedReserve += payout;
        }
        emit PayoutsResolved(freeBetIds);
    }

    /**
     * @notice Withdraw the payout for already redeemed free bet with ID `freeBetId`.
     */
    function withdrawPayout(uint256 freeBetId) external {
        FreeBet_ storage freeBet = freeBets[freeBetId];
        address bettor = freeBet.owner;
        if (bettor == address(0)) revert BetDoesNotExist();

        uint256 payout;
        if (freeBet.amount == 0) {
            // was resolved
            payout = freeBet.payout;
            if (payout > 0) {
                freeBet.payout = 0;
                lockedReserve -= payout;
            }
        } else {
            // was not resolved
            payout = _resolvePayout(freeBetId);
        }

        if (payout > 0) TransferHelper.safeTransfer(token, bettor, payout);

        emit BettorWin(freeBet.core, bettor, freeBetId, payout);
    }

    /**
     * @notice Resolve the payout for already redeemed free bet with ID `freeBetId`.
     */
    function _resolvePayout(
        uint256 freeBetId
    ) internal returns (uint256 payout) {
        FreeBet_ storage freeBet = freeBets[freeBetId];
        uint256 betAmount = freeBet.amount;
        if (betAmount == 0) revert AlreadyResolved();

        freeBet.amount = 0;

        try lp.withdrawPayout(freeBet.core, freeBet.azuroBetId) returns (
            uint128 fullPayout
        ) {
            return (fullPayout > betAmount) ? (fullPayout - betAmount) : 0;
        } catch (bytes memory reason) {
            if (bytes4(reason) == ICoreBase.AlreadyPaid.selector)
                return
                    ICoreBase(freeBet.core).isOutcomeWinning(
                        freeBet.conditionId,
                        freeBet.outcomeId
                    )
                        ? freeBet.odds.mul(betAmount) - betAmount
                        : 0;

            assembly {
                revert(add(32, reason), mload(reason))
            }
        }
    }

    /**
     * @notice Gets the current chain ID.
     * @return The chain ID.
     */
    function _getChainId() internal view returns (uint256) {
        uint256 chainId;
        assembly {
            chainId := chainid()
        }
        return chainId;
    }

    /**
     * @notice Verifies the signature of the oracle response.
     * @param freeBetData The manager response to be verified.
     * @param signature The signature to be validated.
     */
    function _verifySignature(
        FreeBetData memory freeBetData,
        bytes memory signature
    ) internal view {
        bytes32 message = keccak256(abi.encode(freeBetData));
        bytes32 hash = message.toEthSignedMessageHash();
        address signer = hash.recover(signature);

        if (manager != signer) revert InvalidSignature();
    }

    /**
     * @notice Throw if the contract free reserves of tokens `tokens` are less than `amount`.
     */
    function _checkInsufficient(uint256 amount) internal view {
        if (IERC20(token).balanceOf(address(this)) < lockedReserve + amount)
            revert InsufficientContractBalance();
    }
}

/// @title Azuro FreeBet contract factory.
contract FreeBetFactory is OwnableUpgradeable {
    address public freeBetBeacon;
    IAccess public access;

    event NewFreeBet(
        address indexed freeBetAddress,
        address indexed lpAddress,
        address affiliate,
        address manager
    );

    /**
     * @notice Throw if caller have no access to function with selector `selector`.
     */
    modifier restricted(bytes4 selector) {
        access.checkAccess(msg.sender, address(this), selector);
        _;
    }

    function initialize(address accessAddress) external initializer {
        __Ownable_init();

        access = IAccess(accessAddress);

        UpgradeableBeacon freeBetBeacon_ = new UpgradeableBeacon(
            address(new FreeBet())
        );
        freeBetBeacon_.transferOwnership(msg.sender);
        freeBetBeacon = address(freeBetBeacon_);
    }

    /**
     * @notice Deploy a new FreeBet contract.
     * @param lpAddress Liquidity Pool's address for which FreeBets will be issued.
     * @param affiliate Address to be used as the affiliate address in minted FreeBets.
     * @param manager Address that manages the FreeBets.
     */
    function createFreeBet(
        address lpAddress,
        address affiliate,
        address manager
    ) external restricted(this.createFreeBet.selector) {
        address freeBetAddress = address(new BeaconProxy(freeBetBeacon, ""));
        IFreeBet freeBet = IFreeBet(freeBetAddress);
        freeBet.initialize(lpAddress, affiliate, manager);
        freeBet.transferOwnership(msg.sender);

        emit NewFreeBet(freeBetAddress, lpAddress, affiliate, manager);
    }
}

File 2 of 30 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0-rc.1) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

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

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

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

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

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

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

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

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

    /**
     * @dev Internal function that returns the initialized version. Returns `_initialized`
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Internal function that returns the initialized version. Returns `_initializing`
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

File 3 of 30 : IERC721EnumerableUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721EnumerableUpgradeable is IERC721Upgradeable {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

File 4 of 30 : IERC721Upgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0-rc.1) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 5 of 30 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0-rc.1) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

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

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

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

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

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

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

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

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

File 6 of 30 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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

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

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

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

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

File 7 of 30 : IERC165Upgradeable.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 IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 8 of 30 : 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 9 of 30 : draft-IERC1822.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

File 10 of 30 : BeaconProxy.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/beacon/BeaconProxy.sol)

pragma solidity ^0.8.0;

import "./IBeacon.sol";
import "../Proxy.sol";
import "../ERC1967/ERC1967Upgrade.sol";

/**
 * @dev This contract implements a proxy that gets the implementation address for each call from an {UpgradeableBeacon}.
 *
 * The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
 * conflict with the storage layout of the implementation behind the proxy.
 *
 * _Available since v3.4._
 */
contract BeaconProxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the proxy with `beacon`.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
     * will typically be an encoded function call, and allows initializing the storage of the proxy like a Solidity
     * constructor.
     *
     * Requirements:
     *
     * - `beacon` must be a contract with the interface {IBeacon}.
     */
    constructor(address beacon, bytes memory data) payable {
        _upgradeBeaconToAndCall(beacon, data, false);
    }

    /**
     * @dev Returns the current beacon address.
     */
    function _beacon() internal view virtual returns (address) {
        return _getBeacon();
    }

    /**
     * @dev Returns the current implementation address of the associated beacon.
     */
    function _implementation() internal view virtual override returns (address) {
        return IBeacon(_getBeacon()).implementation();
    }

    /**
     * @dev Changes the proxy to use a new beacon. Deprecated: see {_upgradeBeaconToAndCall}.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
     *
     * Requirements:
     *
     * - `beacon` must be a contract.
     * - The implementation returned by `beacon` must be a contract.
     */
    function _setBeacon(address beacon, bytes memory data) internal virtual {
        _upgradeBeaconToAndCall(beacon, data, false);
    }
}

File 11 of 30 : IBeacon.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

File 12 of 30 : UpgradeableBeacon.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/UpgradeableBeacon.sol)

pragma solidity ^0.8.0;

import "./IBeacon.sol";
import "../../access/Ownable.sol";
import "../../utils/Address.sol";

/**
 * @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their
 * implementation contract, which is where they will delegate all function calls.
 *
 * An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon.
 */
contract UpgradeableBeacon is IBeacon, Ownable {
    address private _implementation;

    /**
     * @dev Emitted when the implementation returned by the beacon is changed.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Sets the address of the initial implementation, and the deployer account as the owner who can upgrade the
     * beacon.
     */
    constructor(address implementation_) {
        _setImplementation(implementation_);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function implementation() public view virtual override returns (address) {
        return _implementation;
    }

    /**
     * @dev Upgrades the beacon to a new implementation.
     *
     * Emits an {Upgraded} event.
     *
     * Requirements:
     *
     * - msg.sender must be the owner of the contract.
     * - `newImplementation` must be a contract.
     */
    function upgradeTo(address newImplementation) public virtual onlyOwner {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Sets the implementation contract address for this beacon
     *
     * Requirements:
     *
     * - `newImplementation` must be a contract.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableBeacon: implementation is not a contract");
        _implementation = newImplementation;
    }
}

File 13 of 30 : ERC1967Upgrade.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }
}

File 14 of 30 : Proxy.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

File 15 of 30 : 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 16 of 30 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 17 of 30 : 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 18 of 30 : ECDSA.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

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

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

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

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

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

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

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

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

        return (signer, RecoverError.NoError);
    }

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

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

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

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 19 of 30 : StorageSlot.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}

File 20 of 30 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

File 21 of 30 : TransferHelper.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.6.0;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeApprove: approve failed'
        );
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeTransfer: transfer failed'
        );
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::transferFrom: transferFrom failed'
        );
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
    }
}

File 22 of 30 : IAccess.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "./IOwnable.sol";

interface IAccess is IOwnable {
    struct RoleData {
        address target; // target contract address
        bytes4 selector; // target function selector
        uint8 roleId; // ID of the role associated with contract-function combination
    }

    event RoleAdded(bytes32 indexed role, uint256 indexed roleId);
    event RoleRenamed(bytes32 indexed role, uint8 indexed roleId);
    event RoleBound(bytes32 indexed funcId, uint8 indexed roleId);
    event RoleUnbound(bytes32 indexed funcId, uint8 indexed roleId);
    event RoleGranted(address indexed user, uint8 indexed roleId);
    event RoleRevoked(address indexed user, uint8 indexed roleId);

    error NotTokenOwner();
    error MaxRolesReached();
    error AccessNotGranted();
    error RoleAlreadyGranted();

    function initialize() external;

    function checkAccess(
        address sender,
        address _contract,
        bytes4 selector
    ) external;
}

File 23 of 30 : IAzuroBet.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "./IOwnable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721EnumerableUpgradeable.sol";

interface IAzuroBet is IOwnable, IERC721EnumerableUpgradeable {
    function initialize(address core) external;

    function burn(uint256 id) external;

    function mint(address account) external returns (uint256);

    error OnlyCore();
}

File 24 of 30 : IBet.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

interface IBet {
    struct BetData {
        address affiliate; // address indicated as an affiliate when placing bet
        uint64 minOdds;
        bytes data; // core-specific customized bet data
    }

    error BetNotExists();
    error SmallOdds();

    /**
     * @notice Register new bet.
     * @param  bettor wallet for emitting bet token
     * @param  amount amount of tokens to bet
     * @param  betData customized bet data
     */
    function putBet(
        address bettor,
        uint128 amount,
        BetData calldata betData
    ) external returns (uint256 tokenId);

    function resolvePayout(
        uint256 tokenId
    ) external returns (address account, uint128 payout);

    function viewPayout(uint256 tokenId) external view returns (uint128 payout);
}

File 25 of 30 : ICondition.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

interface ICondition {
    enum ConditionState {
        CREATED,
        RESOLVED,
        CANCELED,
        PAUSED
    }

    struct Condition {
        uint256 gameId;
        uint128[] payouts;
        uint128[] virtualFunds;
        uint128 totalNetBets;
        uint128 reinforcement;
        uint128 fund;
        uint64 margin;
        uint64 endsAt;
        uint48 lastDepositId;
        uint8 winningOutcomesCount;
        ConditionState state;
        address oracle;
        bool isExpressForbidden;
    }
}

File 26 of 30 : ICoreBase.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "./IBet.sol";
import "./ICondition.sol";
import "./ILP.sol";
import "./IOwnable.sol";
import "./IAzuroBet.sol";

interface ICoreBase is ICondition, IOwnable, IBet {
    struct Bet {
        uint256 conditionId;
        uint128 amount;
        uint128 payout;
        uint64 outcome;
        uint64 timestamp;
        bool isPaid;
    }

    struct CoreBetData {
        uint256 conditionId; // The match or game ID
        uint64 outcomeId; // ID of predicted outcome
    }

    event ConditionCreated(
        uint256 indexed gameId,
        uint256 indexed conditionId,
        uint64[] outcomes
    );
    event ConditionResolved(
        uint256 indexed conditionId,
        uint8 state,
        uint64[] winningOutcomes,
        int128 lpProfit
    );
    event ConditionStopped(uint256 indexed conditionId, bool flag);

    event ReinforcementChanged(
        uint256 indexed conditionId,
        uint128 newReinforcement
    );
    event MarginChanged(uint256 indexed conditionId, uint64 newMargin);
    event OddsChanged(uint256 indexed conditionId, uint256[] newOdds);

    error OnlyLp();

    error AlreadyPaid();
    error DuplicateOutcomes(uint64 outcome);
    error IncorrectConditionId();
    error IncorrectMargin();
    error IncorrectReinforcement();
    error NothingChanged();
    error IncorrectTimestamp();
    error IncorrectWinningOutcomesCount();
    error IncorrectOutcomesCount();
    error NoPendingReward();
    error OnlyOracle(address);
    error OutcomesAndOddsCountDiffer();
    error StartOutOfRange(uint256 pendingRewardsCount);
    error WrongOutcome();
    error ZeroOdds();

    error CantChangeFlag();
    error ConditionAlreadyCreated();
    error ConditionAlreadyResolved();
    error ConditionNotFinished();
    error ConditionNotExists();
    error ConditionNotRunning();
    error GameAlreadyStarted();
    error InsufficientFund();
    error ResolveTooEarly(uint64 waitTime);

    function lp() external view returns (ILP);

    function azuroBet() external view returns (IAzuroBet);

    function initialize(address azuroBet, address lp) external;

    function calcOdds(
        uint256 conditionId,
        uint128 amount,
        uint64 outcome
    ) external view returns (uint64 odds);

    /**
     * @notice Change the current condition `conditionId` margin.
     */
    function changeMargin(uint256 conditionId, uint64 newMargin) external;

    /**
     * @notice Change the current condition `conditionId` odds.
     */
    function changeOdds(
        uint256 conditionId,
        uint256[] calldata newOdds
    ) external;

    /**
     * @notice Change the current condition `conditionId` reinforcement.
     */
    function changeReinforcement(
        uint256 conditionId,
        uint128 newReinforcement
    ) external;

    function getCondition(
        uint256 conditionId
    ) external view returns (Condition memory);

    /**
     * @notice Get condition's reinforcement and margin by it's ID.
     * @param  conditionId the match or condition ID
     * @return the condition struct
     */
    function getConditionSettings(
        uint256 conditionId
    ) external view returns (uint128, uint64);

    /**
     * @notice Indicate the condition `conditionId` as canceled.
     * @notice The condition creator can always cancel it regardless of granted access tokens.
     */
    function cancelCondition(uint256 conditionId) external;

    /**
     * @notice Indicate the status of condition `conditionId` bet lock.
     * @param  conditionId the match or condition ID
     * @param  flag if stop receiving bets for the condition or not
     */
    function stopCondition(uint256 conditionId, bool flag) external;

    /**
     * @notice Register new condition.
     * @param  gameId the game ID the condition belongs
     * @param  conditionId the match or condition ID according to oracle's internal numbering
     * @param  odds start odds for [team 1, ..., team N]
     * @param  outcomes unique outcomes for the condition [outcome 1, ..., outcome N]
     * @param  reinforcement maximum amount of liquidity intended to condition reinforcement
     * @param  margin bookmaker commission
     * @param  winningOutcomesCount the number of winning outcomes of the Condition
     * @param  isExpressForbidden true - not allowed to use in express bets
     */
    function createCondition(
        uint256 gameId,
        uint256 conditionId,
        uint256[] calldata odds,
        uint64[] calldata outcomes,
        uint128 reinforcement,
        uint64 margin,
        uint8 winningOutcomesCount,
        bool isExpressForbidden
    ) external;

    function getOutcomeIndex(
        uint256 conditionId,
        uint64 outcome
    ) external view returns (uint256);

    function isOutcomeWinning(
        uint256 conditionId,
        uint64 outcome
    ) external view returns (bool);

    function isConditionCanceled(
        uint256 conditionId
    ) external view returns (bool);
}

File 27 of 30 : ILP.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "./IBet.sol";
import "./IOwnable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721EnumerableUpgradeable.sol";

interface ILP is IOwnable, IERC721EnumerableUpgradeable {
    enum FeeType {
        DAO,
        DATA_PROVIDER,
        AFFILIATES
    }

    enum CoreState {
        UNKNOWN,
        ACTIVE,
        INACTIVE
    }

    struct Condition {
        address core;
        uint256 conditionId;
    }

    struct CoreData {
        CoreState state;
        uint64 reinforcementAbility;
        uint128 minBet;
        uint128 lockedLiquidity;
    }

    struct Game {
        bytes32 unusedVariable;
        uint128 lockedLiquidity;
        uint64 startsAt;
        bool canceled;
    }

    struct Reward {
        int128 amount;
        uint64 claimedAt;
    }

    event CoreSettingsUpdated(
        address indexed core,
        CoreState state,
        uint64 reinforcementAbility,
        uint128 minBet
    );

    event AffiliateChanged(address newAffilaite);
    event BettorWin(
        address indexed core,
        address indexed bettor,
        uint256 tokenId,
        uint256 amount
    );
    event ClaimTimeoutChanged(uint64 newClaimTimeout);
    event DataProviderChanged(address newDataProvider);
    event FeeChanged(FeeType feeType, uint64 fee);
    event GameCanceled(uint256 indexed gameId);
    event GameShifted(uint256 indexed gameId, uint64 newStart);
    event LiquidityAdded(
        address indexed account,
        uint48 indexed depositId,
        uint256 amount
    );
    event LiquidityDonated(
        address indexed account,
        uint48 indexed depositId,
        uint256 amount
    );
    event LiquidityManagerChanged(address newLiquidityManager);
    event LiquidityRemoved(
        address indexed account,
        uint48 indexed depositId,
        uint256 amount
    );
    event MinBetChanged(address core, uint128 newMinBet);
    event MinDepoChanged(uint128 newMinDepo);
    event NewGame(uint256 indexed gameId, uint64 startsAt, bytes data);
    event ReinforcementAbilityChanged(uint128 newReinforcementAbility);
    event WithdrawTimeoutChanged(uint64 newWithdrawTimeout);

    error OnlyFactory();

    error SmallDepo();
    error SmallDonation();

    error BetExpired();
    error CoreNotActive();
    error ClaimTimeout(uint64 waitTime);
    error DepositDoesNotExist();
    error GameAlreadyCanceled();
    error GameAlreadyCreated();
    error GameCanceled_();
    error GameNotExists();
    error IncorrectCoreState();
    error IncorrectFee();
    error IncorrectGameId();
    error IncorrectMinBet();
    error IncorrectMinDepo();
    error IncorrectReinforcementAbility();
    error IncorrectTimestamp();
    error LiquidityNotOwned();
    error LiquidityIsLocked();
    error NoLiquidity();
    error NotEnoughLiquidity();
    error SmallBet();
    error UnknownCore();
    error WithdrawalTimeout(uint64 waitTime);

    function initialize(
        address access,
        address dataProvider,
        address affiliate,
        address token,
        uint128 minDepo,
        uint64 daoFee,
        uint64 dataProviderFee,
        uint64 affiliateFee
    ) external;

    function addCore(address core) external;

    function addLiquidity(
        uint128 amount,
        bytes calldata data
    ) external returns (uint48);

    function withdrawLiquidity(
        uint48 depositId,
        uint40 percent
    ) external returns (uint128);

    function viewPayout(
        address core,
        uint256 tokenId
    ) external view returns (uint128 payout);

    function betFor(
        address bettor,
        address core,
        uint128 amount,
        uint64 expiresAt,
        IBet.BetData calldata betData
    ) external returns (uint256 tokenId);

    /**
     * @notice Make new bet.
     * @notice Emits bet token to `msg.sender`.
     * @param  core address of the Core the bet is intended
     * @param  amount amount of tokens to bet
     * @param  expiresAt the time before which bet should be made
     * @param  betData customized bet data
     */
    function bet(
        address core,
        uint128 amount,
        uint64 expiresAt,
        IBet.BetData calldata betData
    ) external returns (uint256 tokenId);

    function changeDataProvider(address newDataProvider) external;

    function claimReward() external returns (uint128);

    function getReserve() external view returns (uint128);

    function addReserve(
        uint256 gameId,
        uint128 lockedReserve,
        uint128 profitReserve,
        uint48 depositId
    ) external;

    function addCondition(uint256 gameId) external view returns (uint64);

    function withdrawPayout(
        address core,
        uint256 tokenId
    ) external returns (uint128);

    function changeLockedLiquidity(
        uint256 gameId,
        int128 deltaReserve
    ) external;

    /**
     * @notice Indicate the game `gameId` as canceled.
     * @param  gameId the game ID
     */
    function cancelGame(uint256 gameId) external;

    /**
     * @notice Create new game.
     * @param  gameId the match or condition ID according to oracle's internal numbering
     * @param  startsAt timestamp when the game starts
     * @param  data the additional data to emit in the `NewGame` event
     */
    function createGame(
        uint256 gameId,
        uint64 startsAt,
        bytes calldata data
    ) external;

    /**
     * @notice Set `startsAt` as new game `gameId` start time.
     * @param  gameId the game ID
     * @param  startsAt new timestamp when the game starts
     */
    function shiftGame(uint256 gameId, uint64 startsAt) external;

    function getGameInfo(
        uint256 gameId
    ) external view returns (uint64 startsAt, bool canceled);

    function getLockedLiquidityLimit(
        address core
    ) external view returns (uint128);

    function isGameCanceled(
        uint256 gameId
    ) external view returns (bool canceled);

    function checkAccess(
        address account,
        address target,
        bytes4 selector
    ) external;

    function checkCore(address core) external view;

    function getLastDepositId() external view returns (uint48 depositId);

    function isDepositExists(uint256 depositId) external view returns (bool);

    function token() external view returns (address);

    function fees(uint256) external view returns (uint64);
}

File 28 of 30 : IOwnable.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

interface IOwnable {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    function owner() external view returns (address);

    function checkOwner(address account) external view;

    function transferOwnership(address newOwner) external;
}

File 29 of 30 : FixedMath.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

/// @title Fixed-point math tools
library FixedMath {
    uint256 constant ONE = 1e12;

    /**
     * @notice Get the ratio of `self` and `other` that is larger than 'ONE'.
     */
    function ratio(
        uint256 self,
        uint256 other
    ) internal pure returns (uint256) {
        return self > other ? div(self, other) : div(other, self);
    }

    function mul(uint256 self, uint256 other) internal pure returns (uint256) {
        return (self * other) / ONE;
    }

    function div(uint256 self, uint256 other) internal pure returns (uint256) {
        return (self * ONE) / other;
    }

    /**
     * @notice Implementation of the sigmoid function.
     * @notice The sigmoid function is commonly used in machine learning to limit output values within a range of 0 to 1.
     */
    function sigmoid(uint256 self) internal pure returns (uint256) {
        return (self * ONE) / (self + ONE);
    }
}

File 30 of 30 : OwnableUpgradeable.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
import "../interface/IOwnable.sol";

/**
 * @dev Forked from OpenZeppelin contract:
 * https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/ae03ee04ae226526abad6731cf4024134f46ae28/contracts/access/OwnableUpgradeable.sol
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is
    IOwnable,
    Initializable,
    ContextUpgradeable
{
    address private _owner;

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

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

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

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

    /**
     * @dev Throws if the account is not the owner.
     */
    function checkOwner(address account) public view virtual override {
        require(owner() == account, "Ownable: account is not the owner");
    }

    /**
     * @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 override onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _transferOwnership(newOwner);
    }

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

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

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 2
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[],"name":"AlreadyResolved","type":"error"},{"inputs":[],"name":"BetAlreadyClaimed","type":"error"},{"inputs":[],"name":"BetDoesNotExist","type":"error"},{"inputs":[],"name":"BetExpired","type":"error"},{"inputs":[],"name":"IncorrectChainId","type":"error"},{"inputs":[],"name":"InsufficientContractBalance","type":"error"},{"inputs":[],"name":"InvalidSignature","type":"error"},{"inputs":[],"name":"OnlyFreeBetOwner","type":"error"},{"inputs":[],"name":"OnlyManager","type":"error"},{"inputs":[],"name":"SmallMinOdds","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newAffiliate","type":"address"}],"name":"AffiliateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"core","type":"address"},{"indexed":true,"internalType":"address","name":"bettor","type":"address"},{"indexed":true,"internalType":"uint256","name":"freeBetId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BettorWin","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newLp","type":"address"}],"name":"LpChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newManager","type":"address"}],"name":"ManagerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"freeBetId","type":"uint256"},{"indexed":false,"internalType":"address","name":"core","type":"address"},{"indexed":true,"internalType":"address","name":"bettor","type":"address"},{"indexed":true,"internalType":"uint256","name":"azuroBetId","type":"uint256"},{"indexed":false,"internalType":"uint128","name":"amount","type":"uint128"},{"indexed":false,"internalType":"uint64","name":"minOdds","type":"uint64"},{"indexed":false,"internalType":"uint64","name":"expiresAt","type":"uint64"}],"name":"NewBet","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":"uint256[]","name":"azuroBetId","type":"uint256[]"}],"name":"PayoutsResolved","type":"event"},{"inputs":[],"name":"affiliate","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"uint256","name":"freeBetId","type":"uint256"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint64","name":"minOdds","type":"uint64"},{"internalType":"uint64","name":"expiresAt","type":"uint64"}],"internalType":"struct IFreeBet.FreeBetData","name":"freeBetData","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"address","name":"core","type":"address"},{"internalType":"uint256","name":"conditionId","type":"uint256"},{"internalType":"uint64","name":"outcomeId","type":"uint64"},{"internalType":"uint64","name":"deadline","type":"uint64"},{"internalType":"uint64","name":"minOdds","type":"uint64"}],"name":"bet","outputs":[{"internalType":"uint256","name":"azuroBetId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"checkOwner","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"freeBets","outputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"core","type":"address"},{"internalType":"uint256","name":"azuroBetId","type":"uint256"},{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint128","name":"payout","type":"uint128"},{"internalType":"uint256","name":"conditionId","type":"uint256"},{"internalType":"uint64","name":"outcomeId","type":"uint64"},{"internalType":"uint64","name":"odds","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"lpAddress","type":"address"},{"internalType":"address","name":"affiliate_","type":"address"},{"internalType":"address","name":"manager_","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lockedReserve","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lp","outputs":[{"internalType":"contract ILP","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"manager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"freeBetIds","type":"uint256[]"}],"name":"resolvePayout","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"affiliate_","type":"address"}],"name":"setAffiliate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"lp_","type":"address"}],"name":"setLp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"manager_","type":"address"}],"name":"setManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"freeBetId","type":"uint256"}],"name":"withdrawPayout","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawReserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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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.