Contract 0xDDdddd4301A082e62E84e43F474f044423921918 1

/**
 *Submitted for verification at Etherscan.io on 2021-03-10
*/

// File: @openzeppelin/contracts/GSN/Context.sol

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

// File: @openzeppelin/contracts/math/SafeMath.sol


pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol


pragma solidity >=0.6.0 <0.8.0;




/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

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

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

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

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

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

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

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

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

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

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

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

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

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

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

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

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

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

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

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

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

// File: @openzeppelin/contracts/token/ERC20/ERC20Burnable.sol


pragma solidity >=0.6.0 <0.8.0;



/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    using SafeMath for uint256;

    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");

        _approve(account, _msgSender(), decreasedAllowance);
        _burn(account, amount);
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: @openzeppelin/contracts/utils/Counters.sol


pragma solidity >=0.6.0 <0.8.0;


/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath}
 * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never
 * directly accessed.
 */
library Counters {
    using SafeMath for uint256;

    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

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

    function increment(Counter storage counter) internal {
        // The {SafeMath} overflow check can be skipped here, see the comment at the top
        counter._value += 1;
    }

    function decrement(Counter storage counter) internal {
        counter._value = counter._value.sub(1);
    }
}

// File: contracts/IERC20Permit.sol


pragma solidity ^0.6.0;

// A copy of https://github.com/OpenZeppelin/openzeppelin-contracts/blob/ecc66719bd7681ed4eb8bf406f89a7408569ba9b/contracts/drafts/IERC20Permit.sol

/**
 * @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);
}

// File: contracts/ECDSA.sol


pragma solidity ^0.6.0;

// A copy of https://github.com/OpenZeppelin/openzeppelin-contracts/blob/ecc66719bd7681ed4eb8bf406f89a7408569ba9b/contracts/cryptography/ECDSA.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 {
    /**
     * @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) {
        // Check the signature length
        if (signature.length != 65) {
            revert("ECDSA: invalid signature length");
        }

        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // ecrecover takes the signature parameters, and the only way to get them
        // currently is to use assembly.
        // solhint-disable-next-line no-inline-assembly
        assembly {
            r := mload(add(signature, 0x20))
            s := mload(add(signature, 0x40))
            v := byte(0, mload(add(signature, 0x60)))
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // 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 (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): 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.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature s value");
        require(v == 27 || v == 28, "ECDSA: invalid signature v value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * replicates the behavior of the
     * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`]
     * JSON-RPC method.
     *
     * 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));
    }
}

// File: contracts/EIP712.sol


pragma solidity ^0.6.0;

// A copy of https://github.com/OpenZeppelin/openzeppelin-contracts/blob/ecc66719bd7681ed4eb8bf406f89a7408569ba9b/contracts/drafts/EIP712.sol

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;
    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) internal {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = _getChainId();
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (_getChainId() == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) {
        return keccak256(
            abi.encode(
                typeHash,
                name,
                version,
                _getChainId(),
                address(this)
            )
        );
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", _domainSeparatorV4(), structHash));
    }

    function _getChainId() private pure returns (uint256 chainId) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            chainId := chainid()
        }
    }
}

// File: contracts/ERC20Permit.sol


pragma solidity ^0.6.0;






// An adapted copy of https://github.com/OpenZeppelin/openzeppelin-contracts/blob/ecc66719bd7681ed4eb8bf406f89a7408569ba9b/contracts/drafts/ERC20Permit.sol

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;

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

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private immutable _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual override {
        // solhint-disable-next-line not-rely-on-time
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(
            abi.encode(
                _PERMIT_TYPEHASH,
                owner,
                spender,
                value,
                _nonces[owner].current(),
                deadline
            )
        );

        bytes32 hash = _hashTypedDataV4(structHash);

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

        _nonces[owner].increment();
        _approve(owner, spender, value);
    }

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

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

// File: contracts/DeversiFi.sol


pragma solidity ^0.6.0;


contract DeversiFi is ERC20Permit, ERC20Burnable, Ownable {
    constructor(address _owner) public ERC20("DeversiFi Token", "DVF") EIP712("DeversiFi Token", "1") {
        _mint(_owner, 1e8 ether);
        transferOwnership(_owner);
    }

    function mint(address to, uint256 amount) external onlyOwner {
        _mint(to, amount);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000520cf70a2d0b3dfb7386a2bc9f800321f62a5c3a

-----Decoded View---------------
Arg [0] : _owner (address): 0x520cf70a2d0b3dfb7386a2bc9f800321f62a5c3a

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000520cf70a2d0b3dfb7386a2bc9f800321f62a5c3a

39013:350:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;11385:83;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;13491:169;;;;;;;;;;;;;;;;-1:-1:-1;13491:169:0;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;12460:100;;;:::i;:::-;;;;;;;;;;;;;;;;14142:321;;;;;;;;;;;;;;;;-1:-1:-1;14142:321:0;;;;;;;;;;;;;;;;;;:::i;12312:83::-;;;:::i;:::-;;;;;;;;;;;;;;;;;;;38824:115;;;:::i;14872:218::-;;;;;;;;;;;;;;;;-1:-1:-1;14872:218:0;;;;;;;;;:::i;39263:97::-;;;;;;;;;;;;;;;;-1:-1:-1;39263:97:0;;;;;;;;;:::i;:::-;;20731:91;;;;;;;;;;;;;;;;-1:-1:-1;20731:91:0;;:::i;12623:119::-;;;;;;;;;;;;;;;;-1:-1:-1;12623:119:0;;;;:::i;23194:148::-;;;:::i;21141:295::-;;;;;;;;;;;;;;;;-1:-1:-1;21141:295:0;;;;;;;;;:::i;38574:120::-;;;;;;;;;;;;;;;;-1:-1:-1;38574:120:0;;;;:::i;22552:79::-;;;:::i;:::-;;;;;;;;;;;;;;;;;;;11587:87;;;:::i;15593:269::-;;;;;;;;;;;;;;;;-1:-1:-1;15593:269:0;;;;;;;;;:::i;12955:175::-;;;;;;;;;;;;;;;;-1:-1:-1;12955:175:0;;;;;;;;;:::i;37692:816::-;;;;;;;;;;;;;;;;-1:-1:-1;37692:816:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;13193:151::-;;;;;;;;;;;;;;;;-1:-1:-1;13193:151:0;;;;;;;;;;;:::i;23497:244::-;;;;;;;;;;;;;;;;-1:-1:-1;23497:244:0;;;;:::i;11385:83::-;11455:5;11448:12;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;11422:13;;11448:12;;11455:5;;11448:12;;11455:5;11448:12;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;11385:83;;:::o;13491:169::-;13574:4;13591:39;13600:12;:10;:12::i;:::-;13614:7;13623:6;13591:8;:39::i;:::-;-1:-1:-1;13648:4:0;13491:169;;;;:::o;12460:100::-;12540:12;;12460:100;:::o;14142:321::-;14248:4;14265:36;14275:6;14283:9;14294:6;14265:9;:36::i;:::-;14312:121;14321:6;14329:12;:10;:12::i;:::-;14343:89;14381:6;14343:89;;;;;;;;;;;;;;;;;:19;;;;;;;:11;:19;;;;;;14363:12;:10;:12::i;:::-;14343:33;;;;;;;;;;;;;-1:-1:-1;14343:33:0;;;:89;:37;:89::i;:::-;14312:8;:121::i;:::-;-1:-1:-1;14451:4:0;14142:321;;;;;:::o;12312:83::-;12378:9;;;;12312:83;:::o;38824:115::-;38884:7;38911:20;:18;:20::i;:::-;38904:27;;38824:115;:::o;14872:218::-;14960:4;14977:83;14986:12;:10;:12::i;:::-;15000:7;15009:50;15048:10;15009:11;:25;15021:12;:10;:12::i;:::-;15009:25;;;;;;;;;;;;;;;;;;-1:-1:-1;15009:25:0;;;:34;;;;;;;;;;;:38;:50::i;39263:97::-;22774:12;:10;:12::i;:::-;22764:6;;:22;:6;;;:22;;;22756:67;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;39335:17:::1;39341:2;39345:6;39335:5;:17::i;:::-;39263:97:::0;;:::o;20731:91::-;20787:27;20793:12;:10;:12::i;:::-;20807:6;20787:5;:27::i;:::-;20731:91;:::o;12623:119::-;12716:18;;12689:7;12716:18;;;;;;;;;;;;12623:119::o;23194:148::-;22774:12;:10;:12::i;:::-;22764:6;;:22;:6;;;:22;;;22756:67;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23285:6:::1;::::0;23264:40:::1;::::0;23301:1:::1;::::0;23264:40:::1;23285:6;::::0;23264:40:::1;::::0;23301:1;;23264:40:::1;23315:6;:19:::0;;;::::1;::::0;;23194:148::o;21141:295::-;21218:26;21247:84;21284:6;21247:84;;;;;;;;;;;;;;;;;:32;21257:7;21266:12;:10;:12::i;:::-;21247:9;:32::i;:::-;:36;:84;:36;:84::i;:::-;21218:113;;21344:51;21353:7;21362:12;:10;:12::i;:::-;21376:18;21344:8;:51::i;:::-;21406:22;21412:7;21421:6;21406:5;:22::i;:::-;21141:295;;;:::o;38574:120::-;38662:14;;;38635:7;38662:14;;;:7;:14;;;;;:24;;:22;:24::i;:::-;38655:31;38574:120;-1:-1:-1;;38574:120:0:o;22552:79::-;22617:6;;;;22552:79;:::o;11587:87::-;11659:7;11652:14;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;11626:13;;11652:14;;11659:7;;11652:14;;11659:7;11652:14;;;;;;;;;;;;;;;;;;;;;;;;15593:269;15686:4;15703:129;15712:12;:10;:12::i;:::-;15726:7;15735:96;15774:15;15735:96;;;;;;;;;;;;;;;;;:11;:25;15747:12;:10;:12::i;:::-;15735:25;;;;;;;;;;;;;;;;;;-1:-1:-1;15735:25:0;;;:34;;;;;;;;;;;:96;:38;:96::i;12955:175::-;13041:4;13058:42;13068:12;:10;:12::i;:::-;13082:9;13093:6;13058:9;:42::i;37692:816::-;37921:8;37902:15;:27;;37894:69;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;38159:14;;;37976:18;38159:14;;;:7;:14;;;;;38050:16;;38085:5;;38109:7;;38135:5;;38159:24;;:22;:24::i;:::-;38202:8;38021:204;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;37997:239;;;;;;37976:260;;38249:12;38264:28;38281:10;38264:16;:28::i;:::-;38249:43;;38305:14;38322:28;38336:4;38342:1;38345;38348;38322:13;:28::i;:::-;38305:45;;38379:5;38369:15;;:6;:15;;;38361:58;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;38432:14;;;;;;;:7;:14;;;;;:26;;:24;:26::i;:::-;38469:31;38478:5;38485:7;38494:5;38469:8;:31::i;:::-;37692:816;;;;;;;;;;:::o;13193:151::-;13309:18;;;;13282:7;13309:18;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;13193:151::o;23497:244::-;22774:12;:10;:12::i;:::-;22764:6;;:22;:6;;;:22;;;22756:67;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23586:22:::1;::::0;::::1;23578:73;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23688:6;::::0;23667:38:::1;::::0;::::1;::::0;;::::1;::::0;23688:6:::1;::::0;23667:38:::1;::::0;23688:6:::1;::::0;23667:38:::1;23716:6;:17:::0;;;::::1;;::::0;;;::::1;::::0;;;::::1;::::0;;23497:244::o;4759:181::-;4817:7;4849:5;;;4873:6;;;;4865:46;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;4931:1;4759:181;-1:-1:-1;;;4759:181:0:o;665:106::-;753:10;665:106;:::o;18740:346::-;18842:19;;;18834:68;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;18921:21;;;18913:68;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;18994:18;;;;;;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;:36;;;19046:32;;;;;;;;;;;;;;;;;18740:346;;;:::o;16352:539::-;16458:20;;;16450:70;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;16539:23;;;16531:71;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;16615:47;16636:6;16644:9;16655:6;16615:20;:47::i;:::-;16695:71;16717:6;16695:71;;;;;;;;;;;;;;;;;:17;;;:9;:17;;;;;;;;;;;;:71;:21;:71::i;:::-;16675:17;;;;:9;:17;;;;;;;;;;;:91;;;;16800:20;;;;;;;:32;;16825:6;16800:24;:32::i;:::-;16777:20;;;;:9;:20;;;;;;;;;;;;:55;;;;16848:35;;;;;;;16777:20;;16848:35;;;;;;;;;;;;;16352:539;;;:::o;5662:192::-;5748:7;5784:12;5776:6;;;;5768:29;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;5820:5:0;;;5662:192::o;34874:281::-;34927:7;34968:16;34951:13;:11;:13::i;:::-;:33;34947:201;;;-1:-1:-1;35008:24:0;35001:31;;34947:201;35072:64;35094:10;35106:12;35120:15;35072:21;:64::i;:::-;35065:71;;;;17173:378;17257:21;;;17249:65;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;17327:49;17356:1;17360:7;17369:6;17327:20;:49::i;:::-;17404:12;;:24;;17421:6;17404:16;:24::i;:::-;17389:12;:39;17460:18;;;:9;:18;;;;;;;;;;;:30;;17483:6;17460:22;:30::i;:::-;17439:18;;;:9;:18;;;;;;;;;;;:51;;;;17506:37;;;;;;;17439:18;;:9;;17506:37;;;;;;;;;;17173:378;;:::o;17884:418::-;17968:21;;;17960:67;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;18040:49;18061:7;18078:1;18082:6;18040:20;:49::i;:::-;18123:68;18146:6;18123:68;;;;;;;;;;;;;;;;;:18;;;:9;:18;;;;;;;;;;;;:68;:22;:68::i;:::-;18102:18;;;:9;:18;;;;;;;;;;:89;18217:12;;:24;;18234:6;18217:16;:24::i;:::-;18202:12;:39;18257:37;;;;;;;;18283:1;;18257:37;;;;;;;;;;;;;17884:418;;:::o;24871:114::-;24963:14;;24871:114::o;36142:177::-;36211:7;36277:20;:18;:20::i;:::-;36299:10;36248:62;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;36238:73;;;;;;36231:80;;36142:177;;;:::o;29769:1428::-;29854:7;30779:66;30765:80;;;30757:125;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30901:1;:7;;30906:2;30901:7;:18;;;;30912:1;:7;;30917:2;30912:7;30901:18;30893:63;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;31054:14;31071:24;31081:4;31087:1;31090;31093;31071:24;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;31071:24:0;;;;;;-1:-1:-1;;31114:20:0;;;31106:57;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;31183:6;29769:1428;-1:-1:-1;;;;;29769:1428:0:o;24993:181::-;25147:19;;25165:1;25147:19;;;24993:181::o;36327:192::-;36492:9;;36466:46::o;35163:337::-;35265:7;35345:8;35372:4;35395:7;35421:13;:11;:13::i;:::-;35461:4;35316:165;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;35292:200;;;;;;35285:207;;35163:337;;;;;:::o;5223:136::-;5281:7;5308:43;5312:1;5315;5308:43;;;;;;;;;;;;;;;;;:3;:43::i

ipfs://7c100de4ad162853b6323990164a892f754a49100055ec03c1b1aff187996ca0