ETH Price: $3,132.02 (+1.00%)

Token

dandy.dego (DANDY)
 

Overview

Max Total Supply

10,000,000,000,000,000,000,000,000,000,000,000,001,377.688999999999999999 DANDY

Holders

11,202 (0.00%)

Market

Price

$0.00 @ 0.000000 ETH

Onchain Market Cap

$133,602,225,468,000,000,000,000,000,000,000,000,000,000.00

Circulating Supply Market Cap

-

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
zhanglu.eth
Balance
0.01 DANDY

Value
$0.13 ( ~4.15067769467184E-05 Eth) [0.0000%]
0xF53a69e7B19D3A92CEaE7eFB9C621d01D5Ab365A
Loading...
Loading
Loading...
Loading
Loading...
Loading

OVERVIEW

Described as 'a mysterious protocol' in the project's official documentation.

# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
DandyToken

Compiler Version
v0.5.5+commit.47a71e8f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2020-09-26
*/

/***
 *    ██████╗ ███████╗ ██████╗  ██████╗ 
 *    ██╔══██╗██╔════╝██╔════╝ ██╔═══██╗
 *    ██║  ██║█████╗  ██║  ███╗██║   ██║
 *    ██║  ██║██╔══╝  ██║   ██║██║   ██║
 *    ██████╔╝███████╗╚██████╔╝╚██████╔╝
 *    ╚═════╝ ╚══════╝ ╚═════╝  ╚═════╝ 
 *    
 * https://dego.finance
                                  
* MIT License
* ===========
*
* Copyright (c) 2020 dego
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
// File: @openzeppelin/contracts/math/SafeMath.sol

pragma solidity ^0.5.0;

/**
 * @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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        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.
     *
     * _Available since v2.4.0._
     */
    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/IERC20.sol

pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
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/token/ERC20/ERC20Detailed.sol

pragma solidity ^0.5.0;


/**
 * @dev Optional functions from the ERC20 standard.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @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.
     *
     * 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;
    }
}

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

pragma solidity ^0.5.5;

/**
 * @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 Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }

    /**
     * @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].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

pragma solidity ^0.5.0;




/**
 * @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 ERC20;` 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));
    }

    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.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "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: @openzeppelin/contracts/GSN/Context.sol

pragma solidity ^0.5.0;

/*
 * @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.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view 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/ERC20.sol

pragma solidity ^0.5.0;




/**
 * @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 {ERC20Mintable}.
 *
 * 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;

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view 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 returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public 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 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 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 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 {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _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 {
        require(account != address(0), "ERC20: mint to the zero address");

        _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 {
        require(account != address(0), "ERC20: burn from the zero address");

        _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 {
        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 Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance"));
    }
}

// File: contracts/library/Governance.sol

pragma solidity ^0.5.0;

contract Governance {

    address public _governance;

    constructor() public {
        _governance = tx.origin;
    }

    event GovernanceTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyGovernance {
        require(msg.sender == _governance, "not governance");
        _;
    }

    function setGovernance(address governance)  public  onlyGovernance
    {
        require(governance != address(0), "new governance the zero address");
        emit GovernanceTransferred(_governance, governance);
        _governance = governance;
    }


}

// File: contracts/dandy/DandyToken.sol

pragma solidity ^0.5.5;







/// @title DandyToken Contract

contract DandyToken is Governance, ERC20, ERC20Detailed {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    // for minters
    mapping(address => bool) public _minters;

    //token base data
    uint256 internal _totalSupply;
    mapping(address => uint256) public _balances;
    mapping(address => mapping(address => uint256)) public _allowances;

    /**
     * CONSTRUCTOR
     *
     * @dev Initialize the Token
     */

    constructor() public ERC20Detailed("dandy.dego", "DANDY", 18) {}

    function mint(address account, uint256 amount) public {
        require(_minters[msg.sender], "!minter");
        _mint(account, amount);
    }


    function addMinter(address minter) public onlyGovernance{
        _minters[minter] = true;
    }

    function removeMinter(address minter) public onlyGovernance {
        _minters[minter] = false;
    }
}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"_allowances","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"amount","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"_governance","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"sender","type":"address"},{"name":"recipient","type":"address"},{"name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"minter","type":"address"}],"name":"removeMinter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"_minters","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"account","type":"address"},{"name":"amount","type":"uint256"}],"name":"mint","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"_balances","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"account","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"minter","type":"address"}],"name":"addMinter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"recipient","type":"address"},{"name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"governance","type":"address"}],"name":"setGovernance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"owner","type":"address"},{"name":"spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"GovernanceTransferred","type":"event"}]

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

Deployed Bytecode

0x608060405234801561001057600080fd5b50600436106101215760003560e01c806339509351116100ad578063983b2d5611610071578063983b2d561461039d578063a457c2d7146103c3578063a9059cbb146103ef578063ab033ea91461041b578063dd62ed3e1461044157610121565b806339509351146102f157806340c10f191461031d5780636ebcf6071461034957806370a082311461036f57806395d89b411461039557610121565b80631c2f3e3d116100f45780631c2f3e3d1461022b57806323b872dd1461024f5780633092afd514610285578063313ce567146102ad5780633575597d146102cb57610121565b8063024c2ddd1461012657806306fdde0314610166578063095ea7b3146101e357806318160ddd14610223575b600080fd5b6101546004803603604081101561013c57600080fd5b506001600160a01b038135811691602001351661046f565b60408051918252519081900360200190f35b61016e61048c565b6040805160208082528351818301528351919283929083019185019080838360005b838110156101a8578181015183820152602001610190565b50505050905090810190601f1680156101d55780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b61020f600480360360408110156101f957600080fd5b506001600160a01b038135169060200135610522565b604080519115158252519081900360200190f35b61015461053f565b610233610545565b604080516001600160a01b039092168252519081900360200190f35b61020f6004803603606081101561026557600080fd5b506001600160a01b03813581169160208101359091169060400135610554565b6102ab6004803603602081101561029b57600080fd5b50356001600160a01b03166105e1565b005b6102b5610658565b6040805160ff9092168252519081900360200190f35b61020f600480360360208110156102e157600080fd5b50356001600160a01b0316610661565b61020f6004803603604081101561030757600080fd5b506001600160a01b038135169060200135610676565b6102ab6004803603604081101561033357600080fd5b506001600160a01b0381351690602001356106ca565b6101546004803603602081101561035f57600080fd5b50356001600160a01b031661072e565b6101546004803603602081101561038557600080fd5b50356001600160a01b0316610740565b61016e61075b565b6102ab600480360360208110156103b357600080fd5b50356001600160a01b03166107bc565b61020f600480360360408110156103d957600080fd5b506001600160a01b038135169060200135610836565b61020f6004803603604081101561040557600080fd5b506001600160a01b0381351690602001356108a4565b6102ab6004803603602081101561043157600080fd5b50356001600160a01b03166108b8565b6101546004803603604081101561045757600080fd5b506001600160a01b03813581169160200135166109c9565b600a60209081526000928352604080842090915290825290205481565b60048054604080516020601f60026000196101006001881615020190951694909404938401819004810282018101909252828152606093909290918301828280156105185780601f106104ed57610100808354040283529160200191610518565b820191906000526020600020905b8154815290600101906020018083116104fb57829003601f168201915b5050505050905090565b600061053661052f6109f4565b84846109f8565b50600192915050565b60035490565b6000546001600160a01b031681565b6000610561848484610aee565b6105d78461056d6109f4565b6105d285604051806060016040528060288152602001610eb7602891396001600160a01b038a166000908152600260205260408120906105ab6109f4565b6001600160a01b03168152602081019190915260400160002054919063ffffffff610c5616565b6109f8565b5060019392505050565b6000546001600160a01b031633146106375760408051600160e51b62461bcd02815260206004820152600e6024820152600160901b6d6e6f7420676f7665726e616e636502604482015290519081900360640190fd5b6001600160a01b03166000908152600760205260409020805460ff19169055565b60065460ff1690565b60076020526000908152604090205460ff1681565b60006105366106836109f4565b846105d285600260006106946109f4565b6001600160a01b03908116825260208083019390935260409182016000908120918c16815292529020549063ffffffff610cf016565b3360009081526007602052604090205460ff1615156107205760408051600160e51b62461bcd0281526020600482015260076024820152600160c91b6610b6b4b73a32b902604482015290519081900360640190fd5b61072a8282610d54565b5050565b60096020526000908152604090205481565b6001600160a01b031660009081526001602052604090205490565b60058054604080516020601f60026000196101006001881615020190951694909404938401819004810282018101909252828152606093909290918301828280156105185780601f106104ed57610100808354040283529160200191610518565b6000546001600160a01b031633146108125760408051600160e51b62461bcd02815260206004820152600e6024820152600160901b6d6e6f7420676f7665726e616e636502604482015290519081900360640190fd5b6001600160a01b03166000908152600760205260409020805460ff19166001179055565b60006105366108436109f4565b846105d285604051806060016040528060258152602001610f28602591396002600061086d6109f4565b6001600160a01b03908116825260208083019390935260409182016000908120918d1681529252902054919063ffffffff610c5616565b60006105366108b16109f4565b8484610aee565b6000546001600160a01b0316331461090e5760408051600160e51b62461bcd02815260206004820152600e6024820152600160901b6d6e6f7420676f7665726e616e636502604482015290519081900360640190fd5b6001600160a01b038116151561096e5760408051600160e51b62461bcd02815260206004820152601f60248201527f6e657720676f7665726e616e636520746865207a65726f206164647265737300604482015290519081900360640190fd5b600080546040516001600160a01b03808516939216917f5f56bee8cffbe9a78652a74a60705edede02af10b0bbb888ca44b79a0d42ce8091a3600080546001600160a01b0319166001600160a01b0392909216919091179055565b6001600160a01b03918216600090815260026020908152604080832093909416825291909152205490565b3390565b6001600160a01b0383161515610a4257604051600160e51b62461bcd028152600401808060200182810382526024815260200180610f046024913960400191505060405180910390fd5b6001600160a01b0382161515610a8c57604051600160e51b62461bcd028152600401808060200182810382526022815260200180610e6f6022913960400191505060405180910390fd5b6001600160a01b03808416600081815260026020908152604080832094871680845294825291829020859055815185815291517f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b9259281900390910190a3505050565b6001600160a01b0383161515610b3857604051600160e51b62461bcd028152600401808060200182810382526025815260200180610edf6025913960400191505060405180910390fd5b6001600160a01b0382161515610b8257604051600160e51b62461bcd028152600401808060200182810382526023815260200180610e4c6023913960400191505060405180910390fd5b610bc581604051806060016040528060268152602001610e91602691396001600160a01b038616600090815260016020526040902054919063ffffffff610c5616565b6001600160a01b038085166000908152600160205260408082209390935590841681522054610bfa908263ffffffff610cf016565b6001600160a01b0380841660008181526001602090815260409182902094909455805185815290519193928716927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a3505050565b60008184841115610ce857604051600160e51b62461bcd0281526004018080602001828103825283818151815260200191508051906020019080838360005b83811015610cad578181015183820152602001610c95565b50505050905090810190601f168015610cda5780820380516001836020036101000a031916815260200191505b509250505060405180910390fd5b505050900390565b600082820183811015610d4d5760408051600160e51b62461bcd02815260206004820152601b60248201527f536166654d6174683a206164646974696f6e206f766572666c6f770000000000604482015290519081900360640190fd5b9392505050565b6001600160a01b0382161515610db45760408051600160e51b62461bcd02815260206004820152601f60248201527f45524332303a206d696e7420746f20746865207a65726f206164647265737300604482015290519081900360640190fd5b600354610dc7908263ffffffff610cf016565b6003556001600160a01b038216600090815260016020526040902054610df3908263ffffffff610cf016565b6001600160a01b03831660008181526001602090815260408083209490945583518581529351929391927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9281900390910190a3505056fe45524332303a207472616e7366657220746f20746865207a65726f206164647265737345524332303a20617070726f766520746f20746865207a65726f206164647265737345524332303a207472616e7366657220616d6f756e7420657863656564732062616c616e636545524332303a207472616e7366657220616d6f756e74206578636565647320616c6c6f77616e636545524332303a207472616e736665722066726f6d20746865207a65726f206164647265737345524332303a20617070726f76652066726f6d20746865207a65726f206164647265737345524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726fa165627a7a72305820cfa7d456afdb2fc72102288af5fe7fc32ee865de0bee98acef4638fda62c32c20029

Loading...
Loading
Loading...
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.