Contract Source Code (Solidity)Audit Report

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

   - function _msgSender()    - function _msgData() interface IERC20    - function totalSupply()    - function balanceOf(address account)    - function transfer(address recipient, ...    - function allowance(address owner, add ...    - function approve(address spender, uin ...    - function transferFrom(address sender, ... library SafeMath    - function add(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b, st ...    - function mul(uint256 a, uint256 b)    - function div(uint256 a, uint256 b)    - function div(uint256 a, uint256 b, st ...    - function mod(uint256 a, uint256 b)    - function mod(uint256 a, uint256 b, st ... library Address    - function isContract(address account)    - function sendValue(address payable re ...    - function functionCall(address target, ...    - function functionCall(address target, ...    - function functionCallWithValue(addres ...    - function functionCallWithValue(addres ...    - function _functionCallWithValue(addre ... library SafeERC20    - function safeTransfer(IERC20 token, a ...    - function safeTransferFrom(IERC20 toke ...    - function safeApprove(IERC20 token, ad ...    - function safeIncreaseAllowance(IERC20 ...    - function safeDecreaseAllowance(IERC20 ...    - function _callOptionalReturn(IERC20 t ...  contract Ownable is Context    - function owner()    - function renounceOwnership()    - function transferOwnership(address ne ...  contract ERC20 is Context, IERC20    - function name()    - function symbol()    - function decimals()    - function totalSupply()    - function balanceOf(address account)    - function transfer(address recipient, ...    - function allowance(address owner, add ...    - function approve(address spender, uin ...    - function transferFrom(address sender, ...    - function increaseAllowance(address sp ...    - function decreaseAllowance(address sp ...    - function _transfer(address sender, ad ...    - function _mint(address account, uint2 ...    - function _burn(address account, uint2 ...    - function _approve(address owner, addr ...    - function _setupDecimals(uint8 decimal ...    - function _beforeTokenTransfer(address ...  contract YieldToken is ERC20(& ... *    - function mint(address _to, uint256 _a ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2020-09-04
*/

/*

website: yield-farming.io

*/

pragma solidity ^0.6.12;
/*
 * @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;
    }
}

/**
 * @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);
}

/**
 * @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;
    }
}


/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

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

/**
 * @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");
        }
    }
}



/**
 * @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.
 */
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;
    }
}


/**
 * @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;
    using Address for address;

    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 is 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 { }
}

// YieldToken with Governance.
contract YieldToken is ERC20("yield-farming.io", "YIELD"), Ownable {
    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }
}

• HashEx - September 17th, 2020 - Security Audit Report

[{"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":[{"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":[],"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":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","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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

31922:274:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23073:83;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;25179:169;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;25179:169:0;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;24148:100;;;:::i;:::-;;;;;;;;;;;;;;;;25822:321;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;25822:321:0;;;;;;;;;;;;;;;;;:::i;24000:83::-;;;:::i;:::-;;;;;;;;;;;;;;;;;;;26552:218;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;26552:218:0;;;;;;;;:::i;32094:99::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;32094:99:0;;;;;;;;:::i;:::-;;24311:119;;;;;;;;;;;;;;;;-1:-1:-1;24311:119:0;-1:-1:-1;;;;;24311:119:0;;:::i;20424:148::-;;;:::i;19782:79::-;;;:::i;:::-;;;;-1:-1:-1;;;;;19782:79:0;;;;;;;;;;;;;;23275:87;;;:::i;27273:269::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;27273:269:0;;;;;;;;:::i;24643:175::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;24643:175:0;;;;;;;;:::i;24881:151::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;24881:151:0;;;;;;;;;;:::i;20727:244::-;;;;;;;;;;;;;;;;-1:-1:-1;20727:244:0;-1:-1:-1;;;;;20727:244:0;;:::i;23073:83::-;23143:5;23136:12;;;;;;;;-1:-1:-1;;23136:12:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23110:13;;23136:12;;23143:5;;23136:12;;23143:5;23136:12;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23073:83;:::o;25179:169::-;25262:4;25279:39;25288:12;:10;:12::i;:::-;25302:7;25311:6;25279:8;:39::i;:::-;-1:-1:-1;25336:4:0;25179:169;;;;:::o;24148:100::-;24228:12;;24148:100;:::o;25822:321::-;25928:4;25945:36;25955:6;25963:9;25974:6;25945:9;:36::i;:::-;25992:121;26001:6;26009:12;:10;:12::i;:::-;26023:89;26061:6;26023:89;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;26023:19:0;;;;;;:11;:19;;;;;;26043:12;:10;:12::i;:::-;-1:-1:-1;;;;;26023:33:0;;;;;;;;;;;;-1:-1:-1;26023:33:0;;;:89;:37;:89::i;:::-;25992:8;:121::i;:::-;-1:-1:-1;26131:4:0;25822:321;;;;;:::o;24000:83::-;24066:9;;;;24000:83;:::o;26552:218::-;26640:4;26657:83;26666:12;:10;:12::i;:::-;26680:7;26689:50;26728:10;26689:11;:25;26701:12;:10;:12::i;:::-;-1:-1:-1;;;;;26689:25:0;;;;;;;;;;;;;;;;;-1:-1:-1;26689:25:0;;;:34;;;;;;;;;;;:38;:50::i;32094:99::-;20004:12;:10;:12::i;:::-;19994:6;;;;;-1:-1:-1;;;;;19994:6:0;;;:22;;;19986:67;;;;;-1:-1:-1;;;19986:67:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;32166:19:::1;32172:3;32177:7;32166:5;:19::i;:::-;32094:99:::0;;:::o;24311:119::-;-1:-1:-1;;;;;24404:18:0;24377:7;24404:18;;;;;;;;;;;;24311:119::o;20424:148::-;20004:12;:10;:12::i;:::-;19994:6;;;;;-1:-1:-1;;;;;19994:6:0;;;:22;;;19986:67;;;;;-1:-1:-1;;;19986:67:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;20515:6:::1;::::0;20494:40:::1;::::0;20531:1:::1;::::0;20515:6:::1;::::0;::::1;-1:-1:-1::0;;;;;20515:6:0::1;::::0;20494:40:::1;::::0;20531:1;;20494:40:::1;20545:6;:19:::0;;-1:-1:-1;;;;;;20545:19:0::1;::::0;;20424:148::o;19782:79::-;19847:6;;;;;-1:-1:-1;;;;;19847:6:0;;19782:79::o;23275:87::-;23347:7;23340:14;;;;;;;;-1:-1:-1;;23340:14:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23314:13;;23340:14;;23347:7;;23340:14;;23347:7;23340:14;;;;;;;;;;;;;;;;;;;;;;;;27273:269;27366:4;27383:129;27392:12;:10;:12::i;:::-;27406:7;27415:96;27454:15;27415:96;;;;;;;;;;;;;;;;;:11;:25;27427:12;:10;:12::i;:::-;-1:-1:-1;;;;;27415:25:0;;;;;;;;;;;;;;;;;-1:-1:-1;27415:25:0;;;:34;;;;;;;;;;;:96;:38;:96::i;24643:175::-;24729:4;24746:42;24756:12;:10;:12::i;:::-;24770:9;24781:6;24746:9;:42::i;24881:151::-;-1:-1:-1;;;;;24997:18:0;;;24970:7;24997:18;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;24881:151::o;20727:244::-;20004:12;:10;:12::i;:::-;19994:6;;;;;-1:-1:-1;;;;;19994:6:0;;;:22;;;19986:67;;;;;-1:-1:-1;;;19986:67:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;20816:22:0;::::1;20808:73;;;;-1:-1:-1::0;;;20808:73:0::1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;20918:6;::::0;20897:38:::1;::::0;-1:-1:-1;;;;;20897:38:0;;::::1;::::0;20918:6:::1;::::0;::::1;;::::0;20897:38:::1;::::0;;;::::1;20946:6;:17:::0;;-1:-1:-1;;;;;20946:17:0;;::::1;;;-1:-1:-1::0;;;;;;20946:17:0;;::::1;::::0;;;::::1;::::0;;20727:244::o;610:106::-;698:10;610:106;:::o;30420:346::-;-1:-1:-1;;;;;30522:19:0;;30514:68;;;;-1:-1:-1;;;30514:68:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;30601:21:0;;30593:68;;;;-1:-1:-1;;;30593:68:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;30674:18:0;;;;;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;:36;;;30726:32;;;;;;;;;;;;;;;;;30420:346;;;:::o;28032:539::-;-1:-1:-1;;;;;28138:20:0;;28130:70;;;;-1:-1:-1;;;28130:70:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;28219:23:0;;28211:71;;;;-1:-1:-1;;;28211:71:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;28295:47;28316:6;28324:9;28335:6;28295:20;:47::i;:::-;28375:71;28397:6;28375:71;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;28375:17:0;;:9;:17;;;;;;;;;;;;:71;:21;:71::i;:::-;-1:-1:-1;;;;;28355:17:0;;;:9;:17;;;;;;;;;;;:91;;;;28480:20;;;;;;;:32;;28505:6;28480:24;:32::i;:::-;-1:-1:-1;;;;;28457:20:0;;;:9;:20;;;;;;;;;;;;:55;;;;28528:35;;;;;;;28457:20;;28528:35;;;;;;;;;;;;;28032:539;;;:::o;5420:192::-;5506:7;5542:12;5534:6;;;;5526:29;;;;-1:-1:-1;;;5526:29:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;5578:5:0;;;5420:192::o;4517:181::-;4575:7;4607:5;;;4631:6;;;;4623:46;;;;;-1:-1:-1;;;4623:46:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;4689:1;4517:181;-1:-1:-1;;;4517:181:0:o;28852:378::-;-1:-1:-1;;;;;28936:21:0;;28928:65;;;;;-1:-1:-1;;;28928:65:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;29006:49;29035:1;29039:7;29048:6;29006:20;:49::i;:::-;29083:12;;:24;;29100:6;29083:16;:24::i;:::-;29068:12;:39;-1:-1:-1;;;;;29139:18:0;;:9;:18;;;;;;;;;;;:30;;29162:6;29139:22;:30::i;:::-;-1:-1:-1;;;;;29118:18:0;;:9;:18;;;;;;;;;;;:51;;;;29185:37;;;;;;;29118:18;;:9;;29185:37;;;;;;;;;;28852:378;;:::o;31791:92::-;;;;:::o

ipfs://2573567c7d835b3b0cb89d4ed2145fd748a26ce24588d651e0f7cac653af03a3