Contract Source Code (Solidity)Audit Report

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2021-01-28
*/

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

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

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

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

        _;

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

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


pragma solidity >=0.6.2 <0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

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

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

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

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

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

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

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

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

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

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/contracts/token/ERC20/SafeERC20.sol


pragma solidity >=0.6.0 <0.8.0;




/**
 * @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 SafeMath for uint256;
    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'
        // solhint-disable-next-line max-line-length
        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).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

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

    /**
     * @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
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// File: contracts/AragonVotingWrapper.sol


pragma solidity 0.7.6;




contract AragonVotingWrapper is ReentrancyGuard {
  using SafeERC20 for IERC20;

  event Wrap(address indexed user, uint256 amount);
  event Unwrap(address indexed user, uint256 amount);

  IERC20 public opium;
  IERC20 public voting;

  constructor (
    IERC20 _opium,
    IERC20 _voting
  ) public {
    opium = _opium;
    voting = _voting;
  }

  function wrap(uint256 _amount) external {
    _wrap(_amount);
  }

  function _wrap(uint256 _amount) private nonReentrant {
    opium.safeTransferFrom(msg.sender, address(this), _amount);
    voting.safeTransfer(msg.sender, _amount);

    emit Wrap(msg.sender, _amount);
  }

  function unwrap(uint256 _amount) external {
    _unwrap(_amount);
  }

  function _unwrap(uint256 _amount) private nonReentrant {
    voting.safeTransferFrom(msg.sender, address(this), _amount);
    opium.safeTransfer(msg.sender, _amount);

    emit Unwrap(msg.sender, _amount);
  }
}

• MixBytes - January 25th, 2021 - Security Audit Report

[{"inputs":[{"internalType":"contract IERC20","name":"_opium","type":"address"},{"internalType":"contract IERC20","name":"_voting","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Unwrap","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Wrap","type":"event"},{"inputs":[],"name":"opium","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"unwrap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"voting","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"wrap","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000888888888889c00c67689029d7856aac1065ec110000000000000000000000007a8d51b82b36fa5b50fb77001d6d189e920d2f75

-----Decoded View---------------
Arg [0] : _opium (address): 0x888888888889C00c67689029D7856AAC1065eC11
Arg [1] : _voting (address): 0x7A8d51b82b36Fa5B50fb77001D6d189E920d2f75

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000888888888889c00c67689029d7856aac1065ec11
Arg [1] : 0000000000000000000000007a8d51b82b36fa5b50fb77001d6d189e920d2f75

22836:952:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23032:19;;;:::i;:::-;;;;-1:-1:-1;;;;;23032:19:0;;;;;;;;;;;;;;23494:71;;;;;;;;;;;;;;;;-1:-1:-1;23494:71:0;;:::i;:::-;;23205:67;;;;;;;;;;;;;;;;-1:-1:-1;23205:67:0;;:::i;23056:20::-;;;:::i;23032:19::-;;;-1:-1:-1;;;;;23032:19:0;;:::o;23494:71::-;23543:16;23551:7;23543;:16::i;:::-;23494:71;:::o;23205:67::-;23252:14;23258:7;23252:5;:14::i;23056:20::-;;;-1:-1:-1;;;;;23056:20:0;;:::o;23571:214::-;1793:1;2399:7;;:19;;2391:63;;;;;-1:-1:-1;;;2391:63:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;1793:1;2532:7;:18;;;23633:6;:59:::1;::::0;-1:-1:-1;;;;;23633:6:0::1;23657:10;23677:4;23684:7:::0;23633:23:::1;:59::i;:::-;23699:5;::::0;:39:::1;::::0;-1:-1:-1;;;;;23699:5:0::1;23718:10;23730:7:::0;23699:18:::1;:39::i;:::-;23752:27;::::0;;;;;;;23759:10:::1;::::0;23752:27:::1;::::0;;;;;::::1;::::0;;::::1;-1:-1:-1::0;1749:1:0;2711:7;:22;23571:214::o;23278:210::-;1793:1;2399:7;;:19;;2391:63;;;;;-1:-1:-1;;;2391:63:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;1793:1;2532:7;:18;23338:5:::1;::::0;:58:::1;::::0;-1:-1:-1;;;;;23338:5:0::1;23361:10;23381:4;23388:7:::0;23338:22:::1;:58::i;:::-;23403:6;::::0;:40:::1;::::0;-1:-1:-1;;;;;23403:6:0::1;23423:10;23435:7:::0;23403:19:::1;:40::i;:::-;23457:25;::::0;;;;;;;23462:10:::1;::::0;23457:25:::1;::::0;;;;;::::1;::::0;;::::1;-1:-1:-1::0;1749:1:0;2711:7;:22;23278:210::o;19868:205::-;19996:68;;;-1:-1:-1;;;;;19996:68:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;19996:68:0;-1:-1:-1;;;19996:68:0;;;19969:96;;19989:5;;19969:19;:96::i;:::-;19868:205;;;;:::o;19683:177::-;19793:58;;;-1:-1:-1;;;;;19793:58:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;19793:58:0;-1:-1:-1;;;19793:58:0;;;19766:86;;19786:5;;19766:19;:86::i;:::-;19683:177;;;:::o;21988:761::-;22412:23;22438:69;22466:4;22438:69;;;;;;;;;;;;;;;;;22446:5;-1:-1:-1;;;;;22438:27:0;;;:69;;;;;:::i;:::-;22522:17;;22412:95;;-1:-1:-1;22522:21:0;22518:224;;22664:10;22653:30;;;;;;;;;;;;;;;-1:-1:-1;22653:30:0;22645:85;;;;-1:-1:-1;;;22645:85:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;14668:195;14771:12;14803:52;14825:6;14833:4;14839:1;14842:12;14803:21;:52::i;:::-;14796:59;;14668:195;;;;;;:::o;15720:530::-;15847:12;15905:5;15880:21;:30;;15872:81;;;;-1:-1:-1;;;15872:81:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;15972:18;15983:6;15972:10;:18::i;:::-;15964:60;;;;;-1:-1:-1;;;15964:60:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;16098:12;16112:23;16139:6;-1:-1:-1;;;;;16139:11:0;16159:5;16167:4;16139:33;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;16139:33:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;16097:75;;;;16190:52;16208:7;16217:10;16229:12;16190:17;:52::i;:::-;16183:59;15720:530;-1:-1:-1;;;;;;;15720:530:0:o;11750:422::-;12117:20;12156:8;;;11750:422::o;18260:742::-;18375:12;18404:7;18400:595;;;-1:-1:-1;18435:10:0;18428:17;;18400:595;18549:17;;:21;18545:439;;18812:10;18806:17;18873:15;18860:10;18856:2;18852:19;18845:44;18760:148;18955:12;18948:20;;-1:-1:-1;;;18948:20:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

ipfs://4475c01b9c46e65af33541e5955da901ced05023bcf55523a0efebc82bb4859c