Token USD Coin (Arb1)
Overview ERC20
Price
$1.00 @ 0.000636 ETH (+0.02%)
Fully Diluted Market Cap
Total Supply:
630,319,460.883283 USDC
Holders:
287,368 addresses
Contract:
Decimals:
6
Official Site:
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OVERVIEW
USDC is a fully collateralized US Dollar stablecoin developed by CENTRE, the open source project with Circle being the first of several forthcoming issuers.Market
Volume (24H) | : | $2,825,792,421.00 |
Market Capitalization | : | $43,100,729,862.00 |
Circulating Supply | : | 43,099,502,816.00 USDC |
Market Data Source: Coinmarketcap |
Update? Click here to update the token ICO / general information
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | ETH-USDC | $1.00 0.0000435 Btc | $466,174,192.00 296,198.628 ETH | 0.0324% |
2 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.00 0.0000435 Btc | $284,614,705.00 288,268,002.500 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 31.5023% |
3 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.00 0.0000435 Btc | $141,167,617.00 141,171,367.070 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 15.4274% |
4 | ![]() | BTC-USDC | $1.00 0.0000435 Btc | $126,503,658.00 5,499.937 BTC | 0.0006% |
5 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.001 0.0000435 Btc | $98,281,074.00 101,957,513.391 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 11.1420% |
6 | ![]() | USDC-USDT | $0.9998 0.0000435 Btc | $96,038,112.00 96,057,877.104 USDC | 10.4973% |
7 | ![]() | ETH-USDC | $1.00 0.0000435 Btc | $63,108,029.00 40,061.544 ETH | 0.0044% |
8 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $60,435,193.00 2,627.304 BTC | 0.0003% |
9 | ![]() | 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8 | $1.001 0.0000435 Btc | $42,005,848.00 26,338.021 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | 0.0029% |
10 | ![]() | BTC-USDC | $1.00 0.0000435 Btc | $38,561,098.00 1,675.624 BTC | 0.0002% |
11 | ![]() | 0X82698AECC9E28E9BB27608BD52CF57F704BD1B83-USDC | $0.9996 0.0000435 Btc | $36,458,187.00 36,404,363.576 0X82698AECC9E28E9BB27608BD52CF57F704BD1B83 | 3.9783% |
12 | ![]() | 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD | $1.00 0.0000435 Btc | $28,224,288.00 27,311,428.692 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503 | 2.9846% |
13 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $27,061,767.00 16,995.590 ETH | 0.0019% |
14 | ![]() | LTC-USDC | $0.9996 0.0000435 Btc | $26,841,939.00 305,245.417 LTC | 0.0334% |
15 | ![]() | USDC-USDT | $0.9999 0.0000435 Btc | $25,426,638.00 25,428,009.878 USDC | 2.7788% |
16 | ![]() | ETH-USDC | $1.00 0.0000435 Btc | $24,935,370.00 15,666.479 ETH | 0.0017% |
17 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $24,361,657.00 15,314.384 ETH | 0.0017% |
18 | ![]() | USDC-USDT | $0.9997 0.0000435 Btc | $23,152,007.00 23,159,901.619 USDC | 2.5309% |
19 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $23,085,017.00 999.298 BTC | 0.0001% |
20 | ![]() | USDC-USDT | $1.001 0.0000435 Btc | $14,955,267.00 14,947,516.406 USDC | 1.6335% |
21 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.00 0.0000435 Btc | $14,162,225.00 14,367,085.514 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 1.5701% |
22 | ![]() | BCH-USDC | $1.00 0.0000435 Btc | $12,236,790.00 92,060.646 BCH | 0.0101% |
23 | ![]() | BTC-USDC | $1.00 0.0000435 Btc | $11,795,521.00 510.504 BTC | 0.0001% |
24 | ![]() | USDC-USDT | $0.9998 0.0000435 Btc | $11,450,255.00 11,452,611.198 USDC | 1.2516% |
25 | ![]() | BTC-USDC | $1.00 0.0000435 Btc | $11,440,835.00 495.113 BTC | 0.0001% |
26 | ![]() | USDC-USD | $0.9999 0.0000435 Btc | $10,751,412.00 10,752,487.423 USDC | 1.1750% |
27 | ![]() | ETH-USDC | $1.00 0.0000435 Btc | $9,820,095.00 6,167.814 ETH | 0.0007% |
28 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $9,414,495.00 409.331 BTC | 0.0000% |
29 | ![]() | USDC-EUR | $1.00 0.0000435 Btc | $8,969,984.00 8,965,617.314 USDC | 0.9798% |
30 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $8,932,460.00 5,675.190 ETH | 0.0006% |
31 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $8,139,749.00 352.633 BTC | 0.0000% |
32 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $6,664,161.00 289.789 BTC | 0.0000% |
33 | ![]() | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.00 0.0000435 Btc | $6,250,447.00 6,249,989.862 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.6830% |
34 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $5,621,158.00 244.637 BTC | 0.0000% |
35 | ![]() | USDC-USDT | $1.001 0.0000435 Btc | $5,610,019.00 5,606,550.999 USDC | 0.6127% |
36 | ![]() | USDC-USDT | $0.9999 0.0000435 Btc | $5,567,442.00 5,568,189.940 USDC | 0.6085% |
37 | ![]() | 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $1.006 0.0000437 Btc | $5,109,235.00 5,150,314.222 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8 | 0.5628% |
38 | ![]() | USDT-USDC | $0.9996 0.0000435 Btc | $4,446,445.00 4,447,317.603 USDT | 0.4860% |
39 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $4,161,606.00 2,644.827 ETH | 0.0003% |
40 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $4,107,782.00 2,612.420 ETH | 0.0003% |
41 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9981 0.0000434 Btc | $4,077,639.00 4,123,013.038 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.4506% |
42 | ![]() | USDC-USDT | $0.9999 0.0000435 Btc | $3,712,842.00 3,713,256.479 USDC | 0.4058% |
43 | ![]() | USDC-USDT | $1.00 0.0000435 Btc | $2,943,239.00 2,943,255.770 USDC | 0.3216% |
44 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $2,870,883.00 124.861 BTC | 0.0000% |
45 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9964 0.0000433 Btc | $2,844,994.00 2,876,365.288 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.3143% |
46 | ![]() | DOGE-USDC | $0.9996 0.0000435 Btc | $2,763,110.00 31,397,595.110 DOGE | 3.4312% |
47 | ![]() | USDC-USD | $1.00 0.0000435 Btc | $2,547,871.00 2,547,870.509 USDC | 0.2784% |
48 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $1,800,792.00 78.100 BTC | 0.0000% |
49 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $1,540,910.00 979.995 ETH | 0.0001% |
50 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $1,428,275.00 62.086 BTC | 0.0000% |
51 | ![]() | USDC-GBP | $1.00 0.0000435 Btc | $1,161,906.00 1,161,450.500 USDC | 0.1269% |
52 | ![]() | 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9994 0.0000434 Btc | $1,074,101.00 46.526 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | 0.0000% |
53 | ![]() | AVAX-USDC | $0.9996 0.0000435 Btc | $1,024,555.00 49,601.020 AVAX | 0.0054% |
54 | ![]() | ETH-USDC | $0.9996 0.0000435 Btc | $1,021,057.00 641.326 ETH | 0.0001% |
55 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $1,009,703.00 43.891 BTC | 0.0000% |
56 | ![]() | XRP-USDC | $0.9996 0.0000435 Btc | $904,558.00 2,198,010.000 XRP | 0.2402% |
57 | ![]() | DOGE-USDC | $1.00 0.0000435 Btc | $902,327.00 10,137,655.999 DOGE | 1.1079% |
58 | ![]() | EOS-USDC | $1.00 0.0000435 Btc | $872,527.00 795,915.600 EOS | 0.0870% |
59 | ![]() | DOGE-USDC | $0.9996 0.0000435 Btc | $857,133.00 9,606,502.000 DOGE | 1.0498% |
60 | ![]() | USDC-USD | $0.9998 0.0000435 Btc | $685,955.00 686,091.990 USDC | 0.0750% |
61 | ![]() | USDC-USDT | $0.9982 0.0000434 Btc | $664,569.00 665,788.770 USDC | 0.0728% |
62 | ![]() | MATIC-USDC | $1.00 0.0000435 Btc | $615,488.00 537,584.169 MATIC | 0.0587% |
63 | ![]() | MATIC-USDC | $0.9996 0.0000435 Btc | $549,590.00 483,736.120 MATIC | 0.0529% |
64 | ![]() | ATOM-USDC | $0.9996 0.0000435 Btc | $547,683.00 40,292.500 ATOM | 0.0044% |
65 | ![]() | BCH-USDC | $0.9996 0.0000435 Btc | $537,242.00 4,054.710 BCH | 0.0004% |
66 | ![]() | ATOM-USDC | $0.9996 0.0000435 Btc | $531,784.00 39,597.756 ATOM | 0.0043% |
67 | ![]() | ENS-USDC | $1.00 0.0000435 Btc | $512,480.00 31,646.732 ENS | 0.0035% |
68 | ![]() | USDC-USDT | $0.9999 0.0000435 Btc | $502,514.00 502,553.760 USDC | 0.0549% |
69 | ![]() | USDC-USDT | $1.00 0.0000435 Btc | $454,819.00 454,837.880 USDC | 0.0497% |
70 | ![]() | 0X2170ED0880AC9A755FD29B2688956BD959F933F8-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $1.003 0.0000436 Btc | $451,863.00 282.950 0X2170ED0880AC9A755FD29B2688956BD959F933F8 | 0.0000% |
71 | ![]() | LTC-USDC | $1.00 0.0000435 Btc | $446,894.00 5,048.311 LTC | 0.0006% |
72 | ![]() | 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X7F5C764CBC14F9669B88837CA1490CCA17C31607 | $0.9988 0.0000434 Btc | $415,290.00 415,491.930 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9 | 0.0454% |
73 | ![]() | BCH-USDC | $0.9996 0.0000435 Btc | $355,412.00 2,646.940 BCH | 0.0003% |
74 | ![]() | EOS-USDC | $0.9996 0.0000435 Btc | $352,449.00 322,497.870 EOS | 0.0352% |
75 | ![]() | USDT-USDC | $0.9996 0.0000435 Btc | $346,093.00 346,171.140 USDT | 0.0378% |
76 | ![]() | BTC-USDC | $1.00 0.0000434 Btc | $344,483.00 14.962 BTC | 0.0000% |
77 | ![]() | USDC-USDT | $1.00 0.0000435 Btc | $330,952.00 330,963.866 USDC | 0.0362% |
78 | ![]() | ALGO-USDC | $0.9996 0.0000435 Btc | $312,028.00 1,225,561.490 ALGO | 0.1339% |
79 | ![]() | UNI-USDC | $1.00 0.0000435 Btc | $299,084.00 44,037.933 UNI | 0.0048% |
80 | ![]() | FTM-USDC | $0.9996 0.0000435 Btc | $281,453.00 629,151.200 FTM | 0.0688% |
81 | ![]() | NEAR-USDC | $0.9996 0.0000435 Btc | $251,573.00 103,619.380 NEAR | 0.0113% |
82 | ![]() | BNB-USDC | $0.9996 0.0000435 Btc | $248,132.00 808.154 BNB | 0.0001% |
83 | ![]() | USDC-USDT | $1.001 0.0000435 Btc | $239,500.00 239,236.535 USDC | 0.0261% |
84 | ![]() | STEPN-USDC | $0.9996 0.0000435 Btc | $239,169.00 405,255.580 STEPN | 0.0443% |
85 | ![]() | LST-USDC | $0.9996 0.0000435 Btc | $203,819.00 268,040.360 LST | 0.0293% |
86 | ![]() | TRX-USDC | $1.00 0.0000435 Btc | $198,245.00 3,137,532.599 TRX | 0.3429% |
87 | ![]() | USDC-EUR | $1.00 0.0000435 Btc | $191,194.00 191,156.940 USDC | 0.0209% |
88 | ![]() | ADA-USDC | $0.9996 0.0000435 Btc | $171,792.00 444,145.000 ADA | 0.0485% |
89 | ![]() | USDC-GBP | $1.00 0.0000435 Btc | $171,387.00 171,319.540 USDC | 0.0187% |
90 | ![]() | USDC-USD | $1.00 0.0000435 Btc | $162,256.00 162,259.030 USDC | 0.0177% |
91 | ![]() | DAI-USDC | $0.9996 0.0000435 Btc | $145,739.00 145,969.800 DAI | 0.0160% |
92 | ![]() | AVAX-USDC | $0.9996 0.0000435 Btc | $138,705.00 6,819.290 AVAX | 0.0007% |
93 | ![]() | USDC-EUR | $1.001 0.0000435 Btc | $122,084.00 121,971.960 USDC | 0.0133% |
94 | ![]() | 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-BUSD | $1.002 0.0000436 Btc | $114,204.00 114,272.569 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | 0.0125% |
95 | ![]() | DOGE-USDC | $0.9996 0.0000435 Btc | $108,327.00 1,225,198.289 DOGE | 0.1339% |
96 | ![]() | TRX-USDC | $0.9996 0.0000435 Btc | $106,856.00 1,694,857.900 TRX | 0.1852% |
97 | ![]() | BUSD-USDC | $0.9996 0.0000435 Btc | $103,788.00 103,842.566 BUSD | 0.0113% |
98 | ![]() | EOS-USDC | $0.9996 0.0000435 Btc | $81,881.00 74,288.200 EOS | 0.0081% |
99 | ![]() | USDC-USDT | $0.9999 0.0000435 Btc | $34,972.00 34,976.044 USDC | 0.0038% |
100 | ![]() | BTC-USDC | $0.9996 0.0000435 Btc | $12,470.21 0.542 BTC | 0.0000% |
Contract Name:
TransparentUpgradeableProxy
Compiler Version
v0.6.12+commit.27d51765
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2021-09-09 */ // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { // solhint-disable-next-line no-inline-assembly assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback () external payable virtual { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive () external payable virtual { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual { } } /** * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an * implementation address that can be changed. This address is stored in storage in the location specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the * implementation behind the proxy. * * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see * {TransparentUpgradeableProxy}. */ contract UpgradeableProxy is Proxy { /** * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`. * * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded * function call, and allows initializating the storage of the proxy like a Solidity constructor. */ constructor(address _logic, bytes memory _data) public payable { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); _setImplementation(_logic); if(_data.length > 0) { Address.functionDelegateCall(_logic, _data); } } /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function _implementation() internal view virtual override returns (address impl) { bytes32 slot = _IMPLEMENTATION_SLOT; // solhint-disable-next-line no-inline-assembly assembly { impl := sload(slot) } } /** * @dev Upgrades the proxy to a new implementation. * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal virtual { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract"); bytes32 slot = _IMPLEMENTATION_SLOT; // solhint-disable-next-line no-inline-assembly assembly { sstore(slot, newImplementation) } } } /** * @dev This contract implements a proxy that is upgradeable by an admin. * * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector * clashing], which can potentially be used in an attack, this contract uses the * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two * things that go hand in hand: * * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if * that call matches one of the admin functions exposed by the proxy itself. * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the * implementation. If the admin tries to call a function on the implementation it will fail with an error that says * "admin cannot fallback to proxy target". * * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due * to sudden errors when trying to call a function from the proxy implementation. * * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way, * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy. */ contract TransparentUpgradeableProxy is UpgradeableProxy { /** * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}. */ constructor(address _logic, address admin_, bytes memory _data) public payable UpgradeableProxy(_logic, _data) { assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)); _setAdmin(admin_); } /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin. */ modifier ifAdmin() { if (msg.sender == _admin()) { _; } else { _fallback(); } } /** * @dev Returns the current admin. * * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103` */ function admin() external ifAdmin returns (address admin_) { admin_ = _admin(); } /** * @dev Returns the current implementation. * * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc` */ function implementation() external ifAdmin returns (address implementation_) { implementation_ = _implementation(); } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. * * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}. */ function changeAdmin(address newAdmin) external virtual ifAdmin { require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address"); emit AdminChanged(_admin(), newAdmin); _setAdmin(newAdmin); } /** * @dev Upgrade the implementation of the proxy. * * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}. */ function upgradeTo(address newImplementation) external virtual ifAdmin { _upgradeTo(newImplementation); } /** * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the * proxied contract. * * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}. */ function upgradeToAndCall(address newImplementation, bytes calldata data) external payable virtual ifAdmin { _upgradeTo(newImplementation); Address.functionDelegateCall(newImplementation, data); } /** * @dev Returns the current admin. */ function _admin() internal view virtual returns (address adm) { bytes32 slot = _ADMIN_SLOT; // solhint-disable-next-line no-inline-assembly assembly { adm := sload(slot) } } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { bytes32 slot = _ADMIN_SLOT; // solhint-disable-next-line no-inline-assembly assembly { sstore(slot, newAdmin) } } /** * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}. */ function _beforeFallback() internal virtual override { require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target"); super._beforeFallback(); } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs": [{"internalType": "address","name": "_logic","type": "address"},{"internalType": "address","name": "admin_","type": "address"},{"internalType": "bytes","name": "_data","type": "bytes"}],"stateMutability": "payable","type": "constructor"},{"anonymous": false,"inputs": [{"indexed": false,"internalType": "address","name": "previousAdmin","type": "address"},{"indexed": false,"internalType": "address","name": "newAdmin","type": "address"}],"name": "AdminChanged","type": "event"},{"anonymous": false,"inputs": [{"indexed": true,"internalType": "address","name": "implementation","type": "address"}],"name": "Upgraded","type": "event"},{"stateMutability": "payable","type": "fallback"},{"inputs": [],"name": "admin","outputs": [{"internalType": "address","name": "admin_","type": "address"}],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newAdmin","type": "address"}],"name": "changeAdmin","outputs": [],"stateMutability": "nonpayable","type": "function"},{"inputs": [],"name": "implementation","outputs": [{"internalType": "address","name": "implementation_","type": "address"}],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newImplementation","type": "address"}],"name": "upgradeTo","outputs": [],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newImplementation","type": "address"},{"internalType": "bytes","name": "data","type": "bytes"}],"name": "upgradeToAndCall","outputs": [],"stateMutability": "payable","type": "function"},{"stateMutability": "payable","type": "receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000001efb3f88bc88f03fd1804a5c53b7141bbef5ded8000000000000000000000000d570ace65c43af47101fc6250fd6fc63d1c22a86000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _logic (address): 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded8
Arg [1] : admin_ (address): 0xd570ace65c43af47101fc6250fd6fc63d1c22a86
Arg [2] : _data (bytes): 0x
-----Encoded View---------------