Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./Presale.sol";

contract NFTPresaleV2 is Ownable {
    using SafeERC20 for IERC20;

    address public usdtAddress;
    address public paradoxAddress;

    IERC20 internal para;
    IERC20 internal usdt;

    NFTPresale public presaleV1;

    uint256 constant mintSupply = 12500000 * paradoxDecimals;

    uint256 constant paradoxDecimals = 10 ** 18;
    uint256 constant usdtDecimals = 10 ** 6;

    uint256 constant exchangeRateV1 = 8;
    uint256 constant exchangeRatePrecisionV1 = 100;

    uint256 constant exchangeRateV2 = 27;
    uint256 constant exchangeRatePrecisionV2 = 1000;

    uint256 private forteenNovemberTimestamp = 1668420935;


    uint256 constant month = 4 weeks;

    mapping(address => Lock) public locks;

    mapping(address => bool)public islockedOnV2;

    struct Lock {
        uint256 total;
        uint256 max;
        uint256 paid;
        uint256 debt;
        uint256 startTime;
    }

    constructor(address _usdt, address _paradox, address _presaleV1) {
        usdtAddress = _usdt;
        usdt = IERC20(_usdt);

        paradoxAddress = _paradox;
        para = IERC20(_paradox);

        presaleV1 = NFTPresale(_presaleV1);
    }

    function pendingVestedClaim(address _user) external view returns (uint256) {
          Lock memory userLock;

         if(islockedOnV2[_user]){
              userLock = locks[_user];
         }else{
            (  uint256 total, uint256 max, uint256 paid, uint256 debt,uint256 startTime) = presaleV1.locks(_user);
              userLock.total = total;
              userLock.paid = paid;
              userLock.startTime = forteenNovemberTimestamp;
              userLock.debt = debt;
              userLock.max = max;

            // 100% of bought tokens for 0.08$
           uint256 initialTotal = (userLock.total * 100 / 90);
            // Initial amount of usdt user send to buy Parapad 
           uint256 buyAmount = initialTotal * (usdtDecimals * exchangeRateV1)/(exchangeRatePrecisionV1 * paradoxDecimals);
            // 100% of bought tokens for 0.027$
           uint256 newTotal = (buyAmount * exchangeRatePrecisionV2 * paradoxDecimals) / (usdtDecimals * exchangeRateV2);

           userLock.total = newTotal - ((newTotal*10)/100);
         }

         uint256 monthsPassed = (block.timestamp - userLock.startTime) / 4 weeks;

        /** @notice userlock.total = 90%, 5% released each month. */
        uint256 monthlyRelease = (userLock.total * 100 / 90) * 5 / 100;

        uint256 release;
        for (uint256 i = 0; i < monthsPassed; i++) {

            if (release >= userLock.total) {
                    release = userLock.total;
                    break;
            }
            release += monthlyRelease;
        }

        uint256 reward = release - userLock.debt;

        return reward;
    }

    function claimVested() external {
        
         Lock memory userLock;

         if(islockedOnV2[msg.sender]){
              userLock = locks[msg.sender];
         }else{
            (  uint256 total, uint256 max, uint256 paid, uint256 debt,uint256 startTime) = presaleV1.locks(msg.sender);
              userLock.total = total;
              userLock.paid = paid;
              userLock.startTime = forteenNovemberTimestamp;
              userLock.debt = debt;
              userLock.max = max;

            // 100% of bought tokens for 0.08$
           uint256 initialTotal = (userLock.total * 100 / 90);
            // Initial amount of usdt user send to buy Parapad 
           uint256 buyAmount = initialTotal * (usdtDecimals * exchangeRateV1)/(exchangeRatePrecisionV1 * paradoxDecimals);
            // 100% of bought tokens for 0.027$
           uint256 newTotal = (buyAmount * exchangeRatePrecisionV2 * paradoxDecimals) / (usdtDecimals * exchangeRateV2);

            userLock.total = newTotal - ((newTotal*10)/100);
         }

         uint256 monthsPassed = (block.timestamp - userLock.startTime) / 4 weeks;

        /** @notice userlock.total = 90%, 5% released each month. */
        uint256 monthlyRelease = (userLock.total * 100 / 90) * 5 / 100;

        uint256 release;
        for (uint256 i = 0; i < monthsPassed; i++) {
            if (release >= userLock.total) {
                    release = userLock.total;
                    break;
            }
            release += monthlyRelease;
        }

        uint256 reward = release - userLock.debt;
        userLock.debt += reward;

        // Save userLock info to the storage
        locks[msg.sender] = userLock;      
        
        // Update mapping to identify where to fetch info about user lock
        if(!islockedOnV2[msg.sender]){
          islockedOnV2[msg.sender] = true;
        }
        para.safeTransfer(msg.sender, reward);
    }

    function withdrawTether() external onlyOwner {
        usdt.safeTransfer(msg.sender, usdt.balanceOf(address(this)));
    }

    function withdrawETH() external onlyOwner {
        address payable to = payable(msg.sender);
        to.transfer(address(this).balance);
    }

    function withdrawParadox() external onlyOwner {
        para.safeTransfer(msg.sender, para.balanceOf(address(this)));
    }

    function setTimestamp(uint256 _newTimestamp) external onlyOwner {
       forteenNovemberTimestamp = _newTimestamp;
    }

     function getUserLeftToClaim(address _user) external view returns(uint256){
         Lock memory userLock;

         if(islockedOnV2[_user]){
              userLock = locks[_user];
         }else{
            (  uint256 total, uint256 max, uint256 paid, uint256 debt,uint256 startTime) = presaleV1.locks(msg.sender);
              userLock.total = total;
              userLock.paid = paid;
              userLock.startTime = startTime;
              userLock.debt = debt;
              userLock.max = max;
         }

         return userLock.total - userLock.debt;
    }

    function getUserNextClaimTimestamp(address _user) external view returns(uint256){
         Lock memory userLock;

         if(islockedOnV2[_user]){
              userLock = locks[_user];
         }else{
            (  uint256 total, uint256 max, uint256 paid, uint256 debt,uint256 startTime) = presaleV1.locks(msg.sender);
              userLock.total = total;
              userLock.paid = paid;
              userLock.startTime = startTime;
              userLock.debt = debt;
              userLock.max = max;
         }
        
        uint256 monthsPassed = (block.timestamp - userLock.startTime) / 4 weeks;
        
        uint256 nextClaimTimestamp = monthsPassed + month;

         return nextClaimTimestamp - block.timestamp;
    }

     function getUserClaimed(address _user) external view returns(uint256){
         Lock memory userLock;

         if(islockedOnV2[_user]){
              userLock = locks[_user];
         }else{
           (  uint256 total, uint256 max, uint256 paid, uint256 debt,uint256 startTime) = presaleV1.locks(msg.sender);
              userLock.total = total;
              userLock.paid = paid;
              userLock.startTime = startTime;
              userLock.debt = debt;
              userLock.max = max;
         }

         return userLock.debt;
    }
}

// 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);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library 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 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 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) {
        (bool success, bytes memory returndata) = target.delegatecall(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);
        }
    }
}

// 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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     *
     * _Available since v4.7._
     */
    function verifyCalldata(
        bytes32[] calldata proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     *
     * _Available since v4.7._
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     *
     * _Available since v4.7._
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

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

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract NFTPresale is Ownable {
    using SafeERC20 for IERC20;

    address public usdtAddress;
    address public paradoxAddress;

    IERC20 internal para;
    IERC20 internal usdt;

    mapping(address => bool) _claimed;

    bytes32 public root;

    uint256 constant mintSupply = 12500000 * paradoxDecimals;

    uint256 constant paradoxDecimals = 10 ** 18;
    uint256 constant usdtDecimals = 10 ** 6;

    uint256 constant exchangeRate = 8;
    uint256 constant exchangeRatePrecision = 100;

    uint256 constant month = 4 weeks;

    mapping(address => Lock) public locks;

    struct Lock {
        uint256 total;
        uint256 max;
        uint256 paid;
        uint256 debt;
        uint256 startTime;
    }

    constructor(address _usdt, address _paradox, bytes32 _root) {
        usdtAddress = _usdt;
        usdt = IERC20(_usdt);

        paradoxAddress = _paradox;
        para = IERC20(_paradox);

        root = _root;
    }

    function getClaimed(address _user) external view returns (bool) {
        return _claimed[_user];
    }

    function claimParadox(
        address destination,
        uint256 amount,
        uint256 buyAmount,
        bytes32[] calldata merkleProof
    ) external {
        require(canClaim(destination, amount, merkleProof), "Invalid Claim");
        uint256 maxUSD = 500 * amount * usdtDecimals;
        require(buyAmount <= maxUSD, "Wrong amount");

        // get exchange rate to para
        uint256 rate = (buyAmount * exchangeRatePrecision * paradoxDecimals) /
            (usdtDecimals * exchangeRate);
        require(rate <= para.balanceOf(address(this)), "Low balance");
        // give user 10% now
        uint256 rateNow = (rate * 10) / 100;
        uint256 vestingRate = rate - rateNow;

        if (locks[destination].total == 0) {
            // new claim
            locks[destination] = Lock({
                total: vestingRate,
                max: maxUSD,
                paid: buyAmount,
                debt: 0,
                startTime: block.timestamp
            });

            if (buyAmount == maxUSD) _claimed[destination] = true;
        } else {
            // at this point, the user still has some pending amount they can claim
            require(
                buyAmount + locks[destination].paid <= locks[destination].max,
                "Too Much"
            );

            locks[destination].total += vestingRate;
            if (buyAmount + locks[destination].paid == locks[destination].max)
                _claimed[destination] = true;
            locks[destination].paid += buyAmount;
        }

        usdt.safeTransferFrom(destination, address(this), buyAmount);
        para.safeTransfer(destination, rateNow);
    }

    /**
     * @dev helper for validating if an address has PARA to claim
     * @return true if claimant has not already claimed and the data is valid, false otherwise
     */
    function canClaim(
        address destination,
        uint256 amount,
        bytes32[] calldata merkleProof
    ) public view returns (bool) {
        bytes32 node = keccak256(abi.encodePacked(destination, amount));
        return
            !_claimed[destination] &&
            MerkleProof.verify(merkleProof, root, node);
    }

    function pendingVestedClaim(address _user) external view returns (uint256) {
        Lock memory userLock = locks[_user];

        uint256 monthsPassed = (block.timestamp - userLock.startTime) / 4 weeks;
        /** @notice userlock.total = 90%, 10% released each month. */
        uint256 monthlyRelease = userLock.total / 9;

        uint256 release;
        for (uint256 i = 0; i < monthsPassed; i++) {
            release += monthlyRelease;
        }

        return release - userLock.debt;
    }

    function claimVested() external {
        Lock storage userLock = locks[msg.sender];

        uint256 monthsPassed = (block.timestamp - userLock.startTime) / 4 weeks;
        /** @notice userlock.total = 90%, 10% released each month. */
        uint256 monthlyRelease = userLock.total / 9;

        uint256 release;
        for (uint256 i = 0; i < monthsPassed; i++) {
            release += monthlyRelease;
        }

        uint256 reward = release - userLock.debt;
        userLock.debt += reward;
        para.safeTransfer(msg.sender, reward);
    }

    function updateRoot(bytes32 _root) external onlyOwner {
        root = _root;
    }

    function withdrawTether() external onlyOwner {
        usdt.safeTransfer(msg.sender, usdt.balanceOf(address(this)));
    }

    /** @notice EMERGENCY FUNCTIONS */

    function updateClaimed(address _user) external onlyOwner {
        _claimed[_user] = !_claimed[_user];
    }

    function updateUserLock(
        address _user,
        uint256 _total,
        uint256 _max,
        uint256 _paid,
        uint256 _startTime
    ) external onlyOwner {
        Lock storage lock = locks[_user];
        lock.total = _total;
        lock.max = _max;
        lock.paid = _paid;
        lock.startTime = _startTime;
    }

    function withdrawETH() external onlyOwner {
        address payable to = payable(msg.sender);
        to.transfer(address(this).balance);
    }

    function withdrawParadox() external onlyOwner {
        para.safeTransfer(msg.sender, para.balanceOf(address(this)));
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_usdt","type":"address"},{"internalType":"address","name":"_paradox","type":"address"},{"internalType":"address","name":"_presaleV1","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"claimVested","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getUserClaimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getUserLeftToClaim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getUserNextClaimTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"islockedOnV2","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"locks","outputs":[{"internalType":"uint256","name":"total","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"},{"internalType":"uint256","name":"paid","type":"uint256"},{"internalType":"uint256","name":"debt","type":"uint256"},{"internalType":"uint256","name":"startTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paradoxAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"pendingVestedClaim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"presaleV1","outputs":[{"internalType":"contract NFTPresale","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newTimestamp","type":"uint256"}],"name":"setTimestamp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"usdtAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawParadox","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawTether","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0x608060405234801561001057600080fd5b50600436106100eb5760003560e01c8063991cbe2711610092578063991cbe27146101e85780639ab4a445146101f0578063a0a2b57314610203578063c55321e614610216578063d01c44cd14610229578063e086e5ec14610231578063e639346714610239578063f2fde38b1461026c578063f3add2031461027f57600080fd5b80630d0da020146100f05780630fe7fa33146101195780631b256ea41461012c5780631d8daa251461014d5780635de9a137146101605780637112f336146101c5578063715018a6146101cf5780638da5cb5b146101d7575b600080fd5b600554610103906001600160a01b031681565b6040516101109190611196565b60405180910390f35b600254610103906001600160a01b031681565b61013f61013a3660046111aa565b610292565b604051908152602001610110565b61013f61015b3660046111aa565b6103d0565b61019d61016e3660046111aa565b600760205260009081526040902080546001820154600283015460038401546004909401549293919290919085565b604080519586526020860194909452928401919091526060830152608082015260a001610110565b6101cd61053c565b005b6101cd6105cd565b6000546001600160a01b0316610103565b6101cd6105df565b600154610103906001600160a01b031681565b6101cd6102113660046111d3565b610671565b61013f6102243660046111aa565b61067e565b6101cd6107ae565b6101cd610ac5565b61025c6102473660046111aa565b60086020526000908152604090205460ff1681565b6040519015158152602001610110565b6101cd61027a3660046111aa565b610aff565b61013f61028d3660046111aa565b610b7d565b600061029c611167565b6001600160a01b03831660009081526008602052604090205460ff161561031857506001600160a01b038216600090815260076020908152604091829020825160a081018452815481526001820154928101929092526002810154928201929092526003820154606082015260049091015460808201526103b8565b600554604051635de9a13760e01b815260009182918291829182916001600160a01b031690635de9a13790610351903390600401611196565b60a060405180830381865afa15801561036e573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061039291906111ec565b938a5260408a019190915260808901929092526060880191909152602087015250505050505b606081015181516103c99190611242565b9392505050565b60006103da611167565b6001600160a01b03831660009081526008602052604090205460ff161561045657506001600160a01b038216600090815260076020908152604091829020825160a081018452815481526001820154928101929092526002810154928201929092526003820154606082015260049091015460808201526104f6565b600554604051635de9a13760e01b815260009182918291829182916001600160a01b031690635de9a1379061048f903390600401611196565b60a060405180830381865afa1580156104ac573d6000803e3d6000fd5b505050506040513d601f19601f820116820180604052508101906104d091906111ec565b938a5260408a019190915260808901929092526060880191909152602087015250505050505b60006224ea0082608001514261050c9190611242565b6105169190611259565b905060006105276224ea008361127b565b90506105334282611242565b95945050505050565b610544610e17565b600480546040516370a0823160e01b81526105cb9233926001600160a01b0316916370a082319161057791309101611196565b602060405180830381865afa158015610594573d6000803e3d6000fd5b505050506040513d601f19601f820116820180604052508101906105b89190611293565b6004546001600160a01b03169190610e71565b565b6105d5610e17565b6105cb6000610ec8565b6105e7610e17565b6003546040516370a0823160e01b81526105cb9133916001600160a01b03909116906370a082319061061d903090600401611196565b602060405180830381865afa15801561063a573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061065e9190611293565b6003546001600160a01b03169190610e71565b610679610e17565b600655565b6000610688611167565b6001600160a01b03831660009081526008602052604090205460ff161561070457506001600160a01b038216600090815260076020908152604091829020825160a081018452815481526001820154928101929092526002810154928201929092526003820154606082015260049091015460808201526107a4565b600554604051635de9a13760e01b815260009182918291829182916001600160a01b031690635de9a1379061073d903390600401611196565b60a060405180830381865afa15801561075a573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061077e91906111ec565b938a5260408a019190915260808901929092526060880191909152602087015250505050505b6060015192915050565b6107b6611167565b3360009081526008602052604090205460ff1615610820575033600090815260076020908152604091829020825160a08101845281548152600182015492810192909252600281015492820192909252600382015460608201526004909101546080820152610981565b600554604051635de9a13760e01b815260009182918291829182916001600160a01b031690635de9a13790610859903390600401611196565b60a060405180830381865afa158015610876573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061089a91906111ec565b848b5260408b0183905260065460808c015260608b0182905260208b018490529398509196509450925090506000605a6108d58760646112ac565b6108df9190611259565b905060006108f6670de0b6b3a764000060646112ac565b6109046008620f42406112ac565b61090e90846112ac565b6109189190611259565b9050600061092a601b620f42406112ac565b670de0b6b3a764000061093f6103e8856112ac565b61094991906112ac565b6109539190611259565b9050606461096282600a6112ac565b61096c9190611259565b6109769082611242565b895250505050505050505b60006224ea008260800151426109979190611242565b6109a19190611259565b905060006064605a846000015160646109ba91906112ac565b6109c49190611259565b6109cf9060056112ac565b6109d99190611259565b90506000805b83811015610a1657845182106109f85784519150610a16565b610a02838361127b565b915080610a0e816112cb565b9150506109df565b506000846060015182610a299190611242565b90508085606001818151610a3d919061127b565b90525033600090815260076020908152604080832088518155828901516001820155818901516002820155606089015160038201556080890151600490910155600890915290205460ff16610aa757336000908152600860205260409020805460ff191660011790555b600354610abe906001600160a01b03163383610e71565b5050505050565b610acd610e17565b604051339081904780156108fc02916000818181858888f19350505050158015610afb573d6000803e3d6000fd5b5050565b610b07610e17565b6001600160a01b038116610b715760405162461bcd60e51b815260206004820152602660248201527f4f776e61626c653a206e6577206f776e657220697320746865207a65726f206160448201526564647265737360d01b60648201526084015b60405180910390fd5b610b7a81610ec8565b50565b6000610b87611167565b6001600160a01b03831660009081526008602052604090205460ff1615610c0357506001600160a01b038216600090815260076020908152604091829020825160a08101845281548152600182015492810192909252600281015492820192909252600382015460608201526004909101546080820152610d64565b600554604051635de9a13760e01b815260009182918291829182916001600160a01b031690635de9a13790610c3c908b90600401611196565b60a060405180830381865afa158015610c59573d6000803e3d6000fd5b505050506040513d601f19601f82011682018060405250810190610c7d91906111ec565b848b5260408b0183905260065460808c015260608b0182905260208b018490529398509196509450925090506000605a610cb88760646112ac565b610cc29190611259565b90506000610cd9670de0b6b3a764000060646112ac565b610ce76008620f42406112ac565b610cf190846112ac565b610cfb9190611259565b90506000610d0d601b620f42406112ac565b670de0b6b3a7640000610d226103e8856112ac565b610d2c91906112ac565b610d369190611259565b90506064610d4582600a6112ac565b610d4f9190611259565b610d599082611242565b895250505050505050505b60006224ea00826080015142610d7a9190611242565b610d849190611259565b905060006064605a84600001516064610d9d91906112ac565b610da79190611259565b610db29060056112ac565b610dbc9190611259565b90506000805b83811015610df95784518210610ddb5784519150610df9565b610de5838361127b565b915080610df1816112cb565b915050610dc2565b506000846060015182610e0c9190611242565b979650505050505050565b6000546001600160a01b031633146105cb5760405162461bcd60e51b815260206004820181905260248201527f4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e65726044820152606401610b68565b604080516001600160a01b038416602482015260448082018490528251808303909101815260649091019091526020810180516001600160e01b031663a9059cbb60e01b179052610ec3908490610f18565b505050565b600080546001600160a01b038381166001600160a01b0319831681178455604051919092169283917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e09190a35050565b6000610f6d826040518060400160405280602081526020017f5361666545524332303a206c6f772d6c6576656c2063616c6c206661696c6564815250856001600160a01b0316610fea9092919063ffffffff16565b805190915015610ec35780806020019051810190610f8b91906112e6565b610ec35760405162461bcd60e51b815260206004820152602a60248201527f5361666545524332303a204552433230206f7065726174696f6e20646964206e6044820152691bdd081cdd58d8d9595960b21b6064820152608401610b68565b6060610ff98484600085611001565b949350505050565b6060824710156110625760405162461bcd60e51b815260206004820152602660248201527f416464726573733a20696e73756666696369656e742062616c616e636520666f6044820152651c8818d85b1b60d21b6064820152608401610b68565b600080866001600160a01b0316858760405161107e9190611338565b60006040518083038185875af1925050503d80600081146110bb576040519150601f19603f3d011682016040523d82523d6000602084013e6110c0565b606091505b5091509150610e0c8783838760608315611138578251611131576001600160a01b0385163b6111315760405162461bcd60e51b815260206004820152601d60248201527f416464726573733a2063616c6c20746f206e6f6e2d636f6e74726163740000006044820152606401610b68565b5081610ff9565b610ff9838381511561114d5781518083602001fd5b8060405162461bcd60e51b8152600401610b689190611354565b6040518060a0016040528060008152602001600081526020016000815260200160008152602001600081525090565b6001600160a01b0391909116815260200190565b6000602082840312156111bc57600080fd5b81356001600160a01b03811681146103c957600080fd5b6000602082840312156111e557600080fd5b5035919050565b600080600080600060a0868803121561120457600080fd5b5050835160208501516040860151606087015160809097015192989197509594509092509050565b634e487b7160e01b600052601160045260246000fd5b6000828210156112545761125461122c565b500390565b60008261127657634e487b7160e01b600052601260045260246000fd5b500490565b6000821982111561128e5761128e61122c565b500190565b6000602082840312156112a557600080fd5b5051919050565b60008160001904831182151516156112c6576112c661122c565b500290565b60006000198214156112df576112df61122c565b5060010190565b6000602082840312156112f857600080fd5b815180151581146103c957600080fd5b60005b8381101561132357818101518382015260200161130b565b83811115611332576000848401525b50505050565b6000825161134a818460208701611308565b9190910192915050565b6020815260008251806020840152611373816040850160208701611308565b601f01601f1916919091016040019291505056fea26469706673582212202bac6cc8b5e5cc546ac210445cd3ded1cc2a1cf7a42cd587f4977355bb2f993b64736f6c634300080a0033

000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7000000000000000000000000a64c055fc5c8e0d796f791512025827653640f03000000000000000000000000de5c891cdc5741085acc97b9f9264981e8704f86

-----Decoded View---------------
Arg [0] : _usdt (address): 0xdAC17F958D2ee523a2206206994597C13D831ec7
Arg [1] : _paradox (address): 0xA64c055Fc5C8e0D796f791512025827653640f03
Arg [2] : _presaleV1 (address): 0xdE5C891cdC5741085acc97b9f9264981E8704f86

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7
Arg [1] : 000000000000000000000000a64c055fc5c8e0d796f791512025827653640f03
Arg [2] : 000000000000000000000000de5c891cdc5741085acc97b9f9264981e8704f86