Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
1,000,000,000 YGG
Holders
23,055 ( -0.030%)
Market
Price
$0.40 @ 0.000156 ETH (-0.20%)
Onchain Market Cap
$395,443,000.00
Circulating Supply Market Cap
$150,413,027.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
10.160428220465840383 YGGValue
$4.02 ( ~0.00158630796550136 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | YGG-USDT | $0.3955 0.0001560 Eth | $16,936,699.00 42,292,174.289 YGG | 25.2925% |
2 | ![]() | YGG-USDT | $0.3944 0.0001558 Eth | $11,713,652.00 29,187,821.600 YGG | 17.4556% |
3 | ![]() | YGG-USDT | $0.3977 0.0001566 Eth | $4,857,280.00 12,097,854.800 YGG | 7.2350% |
4 | ![]() | YGG-USDT | $0.3951 0.0001559 Eth | $4,535,839.00 11,336,169.158 YGG | 6.7795% |
5 | ![]() | YGG-USDT | $0.3944 0.0001557 Eth | $3,160,605.00 8,014,714.047 YGG | 4.7931% |
6 | ![]() | YGG-USDT | $0.3949 0.0001558 Eth | $3,002,818.00 7,603,709.000 YGG | 4.5473% |
7 | ![]() | YGG-USDT | $0.3943 0.0001556 Eth | $2,989,777.00 7,449,810.900 YGG | 4.4553% |
8 | ![]() | YGG-VNST | $0.3966 0.0001565 Eth | $2,925,757.00 7,376,433.900 YGG | 4.4114% |
9 | ![]() | YGG-USDT | $0.3958 0.0001562 Eth | $2,738,614.00 6,823,625.080 YGG | 4.0808% |
10 | ![]() | YGG-USDT | $0.3918 0.0001546 Eth | $1,968,044.00 5,022,795.000 YGG | 3.0038% |
11 | ![]() | YGG-USDT | $0.3944 0.0001558 Eth | $1,883,339.00 4,716,320.600 YGG | 2.8206% |
12 | ![]() | YGG-USDT | $0.3954 0.0001559 Eth | $1,804,295.00 4,484,627.237 YGG | 2.6820% |
13 | ![]() | YGG-USDT | $0.3955 0.0001560 Eth | $1,163,217.00 2,941,068.000 YGG | 1.7589% |
14 | ![]() | YGG-USDT | $0.3946 0.0001558 Eth | $907,704.00 2,301,038.200 YGG | 1.3761% |
15 | ![]() | YGG-USDT | $0.3953 0.0001560 Eth | $744,259.00 0.000 YGG | 0.0000% |
16 | ![]() | YGG-USDT | $0.3945 0.0001557 Eth | $733,975.00 1,860,378.110 YGG | 1.1126% |
17 | ![]() | YGG-USDT | $0.3948 0.0001558 Eth | $594,901.00 1,481,203.100 YGG | 0.8858% |
18 | ![]() | YGG-USDT | $0.3951 0.0001559 Eth | $594,466.00 1,482,148.720 YGG | 0.8864% |
19 | ![]() | YGG-USDT | $0.396 0.0001562 Eth | $417,609.00 1,054,528.660 YGG | 0.6307% |
20 | ![]() | YGG-USDT | $0.3955 0.0001560 Eth | $400,035.00 998,653.912 YGG | 0.5972% |
21 | ![]() | YGG-USDT | $0.3946 0.0001559 Eth | $388,253.00 983,849.200 YGG | 0.5884% |
22 | ![]() | YGG-USDT | $0.3945 0.0001558 Eth | $359,948.00 912,364.540 YGG | 0.5456% |
23 | ![]() | YGG-USDT | $0.3945 0.0001557 Eth | $350,121.00 887,571.942 YGG | 0.5308% |
24 | ![]() | YGG-USDT | $0.3953 0.0001560 Eth | $320,551.00 797,918.390 YGG | 0.4772% |
25 | ![]() | YGG-USDT | $0.3946 0.0001558 Eth | $314,858.00 797,924.900 YGG | 0.4772% |
26 | ![]() | YGG-USDT | $0.3945 0.0001558 Eth | $221,463.00 561,340.000 YGG | 0.3357% |
27 | ![]() | YGG-INR | $0.4185 0.0001647 Eth | $177,601.00 424,392.628 YGG | 0.2538% |
28 | ![]() | YGG-USDT | $0.3943 0.0001557 Eth | $160,939.00 408,134.807 YGG | 0.2441% |
29 | ![]() | YGG-KRW | $0.4062 0.0001603 Eth | $158,686.00 390,641.014 YGG | 0.2336% |
30 | ![]() | YGG-USDT | $0.3941 0.0001556 Eth | $127,819.00 319,291.300 YGG | 0.1909% |
31 | ![]() | YGG-USDT | $0.396 0.0001562 Eth | $120,646.00 300,504.000 YGG | 0.1797% |
32 | ![]() | YGG-USDT | $0.3946 0.0001558 Eth | $101,096.00 251,534.700 YGG | 0.1504% |
33 | ![]() | YGG-EUR | $0.3982 0.0001572 Eth | $93,344.00 234,385.824 YGG | 0.1402% |
34 | ![]() | YGG-USDT | $0.3949 0.0001559 Eth | $83,541.00 211,575.744 YGG | 0.1265% |
35 | ![]() | YGG-USDC | $0.3951 0.0001560 Eth | $79,262.00 196,449.102 YGG | 0.1175% |
36 | ![]() | YGG-USDC | $0.3953 0.0001560 Eth | $71,112.00 176,071.300 YGG | 0.1053% |
37 | ![]() | YGG-USDT | $0.3944 0.0001557 Eth | $54,953.00 136,638.621 YGG | 0.0817% |
38 | ![]() | 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.3966 0.0001563 Eth | $53,763.00 134,063.840 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73 | 0.0802% |
39 | ![]() | YGG-BTC | $0.3951 0.0001559 Eth | $47,323.00 118,319.000 YGG | 0.0708% |
40 | ![]() | YGG-USDT | $0.3945 0.0001558 Eth | $46,100.00 114,842.823 YGG | 0.0687% |
41 | ![]() | YGG-USD | $0.396 0.0001563 Eth | $39,868.00 100,677.980 YGG | 0.0602% |
42 | ![]() | YGG-USDT | $0.394 0.0001555 Eth | $39,404.00 98,338.300 YGG | 0.0588% |
43 | ![]() | YGG-USDT | $0.3951 0.0001560 Eth | $35,353.00 89,473.896 YGG | 0.0535% |
44 | ![]() | YGG-USDT | $0.3964 0.0001563 Eth | $33,209.00 83,782.173 YGG | 0.0501% |
45 | ![]() | YGG-USDT | $0.3957 0.0001561 Eth | $31,344.00 79,214.580 YGG | 0.0474% |
46 | ![]() | 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.3964 0.0001559 Eth | $31,275.00 78,552.309 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73 | 0.0470% |
47 | ![]() | YGG-TRY | $0.4002 0.0001579 Eth | $30,865.00 76,558.600 YGG | 0.0458% |
48 | ![]() | YGG-USDT | $0.3952 0.0001560 Eth | $30,682.00 77,632.718 YGG | 0.0464% |
49 | ![]() | YGG-USDT | $0.3951 0.0001559 Eth | $30,220.00 76,477.500 YGG | 0.0457% |
50 | ![]() | 0X1C306872BC82525D72BF3562E8F0AA3F8F26E857-0XE514D9DEB7966C8BE0CA922DE8A064264EA6BCD4 | $0.3921 0.0001546 Eth | $23,732.00 59,311.888 0X1C306872BC82525D72BF3562E8F0AA3F8F26E857 | 0.0355% |
51 | ![]() | YGG-USDT | $0.3968 0.0001565 Eth | $21,066.00 52,559.000 YGG | 0.0314% |
52 | ![]() | YGG-USDT | $0.3978 0.0001566 Eth | $19,010.86 47,789.108 YGG | 0.0286% |
53 | ![]() | YGG-BTC | $0.3951 0.0001559 Eth | $17,769.46 44,976.641 YGG | 0.0269% |
54 | ![]() | YGG-PHP | $0.3957 0.0001563 Eth | $17,240.82 43,102.810 YGG | 0.0258% |
55 | ![]() | YGG-BTC | $0.3948 0.0001559 Eth | $12,444.86 31,525.752 YGG | 0.0189% |
56 | ![]() | YGG-USDT | $0.3944 0.0001557 Eth | $11,568.72 29,330.615 YGG | 0.0175% |
57 | ![]() | YGG-USDT | $0.3958 0.0001562 Eth | $7,289.48 18,415.900 YGG | 0.0110% |
58 | ![]() | YGG-USDC | $0.397 0.0001565 Eth | $6,967.16 17,423.862 YGG | 0.0104% |
59 | ![]() | YGG-USDT | $0.3956 0.0001561 Eth | $5,877.21 0.000 YGG | 0.0000% |
60 | ![]() | YGG-EUR | $0.3955 0.0001561 Eth | $5,330.19 13,478.220 YGG | 0.0081% |
61 | ![]() | YGG-USD | $0.3957 0.0001561 Eth | $5,258.22 13,288.400 YGG | 0.0079% |
62 | ![]() | YGG-USDT | $0.3937 0.0001554 Eth | $4,818.55 12,021.682 YGG | 0.0072% |
63 | ![]() | YGG-BTC | $0.3914 0.0001606 Eth | $2,310.23 5,776.212 YGG | 0.0035% |
64 | ![]() | YGG-USDT | $0.3955 0.0001560 Eth | $2,207.27 5,580.834 YGG | 0.0033% |
65 | ![]() | YGG-USDT | $0.3952 0.0001559 Eth | $2,072.92 5,244.900 YGG | 0.0031% |
66 | ![]() | YGG-EUR | $0.3969 0.0001565 Eth | $1,879.93 4,746.385 YGG | 0.0028% |
67 | ![]() | YGG-USDC | $0.3958 0.0001562 Eth | $1,340.24 3,386.031 YGG | 0.0020% |
68 | ![]() | YGG-BTC | $0.399 0.0001573 Eth | $1,191.33 2,986.088 YGG | 0.0018% |
69 | ![]() | YGG-BTC | $0.3949 0.0001559 Eth | $1,022.49 2,589.497 YGG | 0.0015% |
70 | ![]() | YGG-KRW | $0.4124 0.0001627 Eth | $876.85 2,126.374 YGG | 0.0013% |
71 | ![]() | YGG-BRL | $0.4304 0.0001699 Eth | $537.78 1,249.436 YGG | 0.0007% |
72 | ![]() | YGG-TRY | $0.4002 0.0001579 Eth | $352.40 880.530 YGG | 0.0005% |
73 | ![]() | 0X557B933A7C2C45672B610F8954A3DEB39A51A8CA-0X25F8087EAD173B73D6E8B84329989A8EEA16CF73 | $0.3956 0.0001560 Eth | $274.92 51,556.846 0X557B933A7C2C45672B610F8954A3DEB39A51A8CA | 0.0308% |
74 | ![]() | YGG-BRL | $0.393 0.0001550 Eth | $105.59 265.575 YGG | 0.0002% |
75 | ![]() | YGG-USDC | $0.3953 0.0001560 Eth | $99.08 247.260 YGG | 0.0001% |
76 | ![]() | YGG-IDR | $0.3958 0.0001562 Eth | $92.49 229.600 YGG | 0.0001% |
77 | ![]() | YGG-BRL | $0.3696 0.0001435 Eth | $83.08 224.800 YGG | 0.0001% |
78 | ![]() | YGG-ETH | $0.3975 0.0001569 Eth | $75.48 188.976 YGG | 0.0001% |
79 | ![]() | 0X82617AA52DDDF5ED9BB7B370ED777B3182A30FD1-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.3855 0.0001521 Eth | $59.33 162.796 0X82617AA52DDDF5ED9BB7B370ED777B3182A30FD1 | 0.0001% |
80 | ![]() | YGG-BTC | $0.4388 0.0001732 Eth | $17.55 40.000 YGG | 0.0000% |
81 | ![]() | YGG-USDT | $0.32 0.0001263 Eth | $11.99 37.457 YGG | 0.0000% |
82 | ![]() | YGG-USDT | $0.3982 0.0001566 Eth | $11.69 29.372 YGG | 0.0000% |
83 | ![]() | 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.013 0.0003987 Eth | $10.27 10.035 0X25F8087EAD173B73D6E8B84329989A8EEA16CF73 | 0.0000% |
84 | ![]() | YGG-TRY | $0.4149 0.0001637 Eth | $7.03 17.285 YGG | 0.0000% |
85 | ![]() | 0X63CF309500D8BE0B9FDB8F1FB66C821236C0438C-0X6983D1E6DEF3690C4D616B13597A09E6193EA013 | $0.4108 0.0001521 Eth | $0.3006 0.732 0X63CF309500D8BE0B9FDB8F1FB66C821236C0438C | 0.0000% |
86 | ![]() | YGG-USDC | $0.4136 0.0001632 Eth | $0.1241 0.300 YGG | 0.0000% |
87 | ![]() | YGG-USDC | $0.4136 0.0001633 Eth | $0.1237 0.300 YGG | 0.0000% |
88 | ![]() | YGG-BTC | $0.4103 0.0001608 Eth | $0.0656 0.160 YGG | 0.0000% |
89 | ![]() | YGG-BTC | $0.4099 0.0001608 Eth | $0.0656 0.160 YGG | 0.0000% |
Contract Name:
YGGToken
Compiler Version
v0.6.12+commit.27d51765
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2021-07-26 */ // SPDX-License-Identifier: NONE pragma solidity 0.6.12; // Part: OpenZeppelin/[email protected]/Address /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); 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); } } } } // Part: OpenZeppelin/[email protected]/Context /* * @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; } } // Part: OpenZeppelin/[email protected]/IERC20 /** * @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); } // Part: OpenZeppelin/[email protected]/SafeMath /** * @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; } } // Part: OpenZeppelin/[email protected]/ERC20 /** * @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 internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: YGGToken.sol contract YGGToken is ERC20("Yield Guild Games Token", "YGG") { constructor() public { _mint(msg.sender, 1_000_000_000 ether); } }
Contract Security Audit
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"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":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","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"}]
Contract Creation Code
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Deployed Bytecode
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