Token USD Coin (Arb1)
Overview ERC20
Price
$1.00 @ 0.000609 ETH (+0.01%)
Fully Diluted Market Cap
Total Supply:
631,890,771.164163 USDC
Holders:
288,137 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) | : | $2,958,214,372.00 |
Market Capitalization | : | $43,088,175,652.00 |
Circulating Supply | : | 43,086,035,207.00 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 0.0000420 Btc | $429,268,427.00 261,592.446 ETH | 0.0001% |
2 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9998 0.0000420 Btc | $353,285,040.00 345,364,038.320 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0962% |
3 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $127,457,269.00 5,353.461 BTC | 0.0000% |
4 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.9998 0.0000420 Btc | $121,377,945.00 121,418,143.950 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0338% |
5 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $110,569,928.00 4,645.386 BTC | 0.0000% |
6 | ![]() | USDC-USDT | $0.9999 0.0000420 Btc | $108,068,702.00 108,080,767.703 USDC | 0.0301% |
7 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9998 0.0000420 Btc | $83,051,158.00 80,733,889.334 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0225% |
8 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $72,853,391.00 44,280.821 ETH | 0.0000% |
9 | ![]() | 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8 | $1.001 0.0000420 Btc | $65,081,119.00 40,382.991 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | 0.0000% |
10 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $63,172,287.00 2,679.740 BTC | 0.0000% |
11 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $34,164,547.00 21,210.103 ETH | 0.0000% |
12 | ![]() | ETH-USDC | $1.00 0.0000420 Btc | $32,916,361.00 20,432.111 ETH | 0.0000% |
13 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $32,749,311.00 20,328.030 ETH | 0.0000% |
14 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $32,139,635.00 1,351.383 BTC | 0.0000% |
15 | ![]() | LTC-USDC | $1.00 0.0000420 Btc | $31,773,693.00 328,004.970 LTC | 0.0001% |
16 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9998 0.0000420 Btc | $27,292,214.00 26,741,656.144 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0075% |
17 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $20,684,300.00 20,683,458.310 USDC | 0.0058% |
18 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $19,784,553.00 19,784,782.160 USDC | 0.0055% |
19 | ![]() | 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD | $1.00 0.0000420 Btc | $19,552,027.00 18,892,680.200 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503 | 0.0053% |
20 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $17,340,707.00 17,339,173.351 USDC | 0.0048% |
21 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $16,165,430.00 689.975 BTC | 0.0000% |
22 | ![]() | BTC-USDC | $0.9999 0.0000420 Btc | $15,967,708.00 681.437 BTC | 0.0000% |
23 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $15,714,342.00 670.566 BTC | 0.0000% |
24 | ![]() | BTC-USDC | $0.9999 0.0000420 Btc | $14,419,832.00 605.979 BTC | 0.0000% |
25 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $13,802,848.00 8,562.932 ETH | 0.0000% |
26 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $13,089,948.00 549.980 BTC | 0.0000% |
27 | ![]() | ETH-USDC | $1.00 0.0000420 Btc | $12,581,919.00 7,651.380 ETH | 0.0000% |
28 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $12,056,073.00 506.803 BTC | 0.0000% |
29 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $9,076,982.00 381.332 BTC | 0.0000% |
30 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $9,034,710.00 9,034,047.214 USDC | 0.0025% |
31 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $8,784,347.00 8,782,604.445 USDC | 0.0024% |
32 | ![]() | ETH-USDC | $1.00 0.0000420 Btc | $8,036,290.00 4,884.613 ETH | 0.0000% |
33 | ![]() | ETH-USDC | $0.9999 0.0000420 Btc | $7,435,171.00 4,522.529 ETH | 0.0000% |
34 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $7,310,117.00 7,310,217.105 USDC | 0.0020% |
35 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $6,950,049.00 6,948,739.041 USDC | 0.0019% |
36 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.001 0.0000421 Btc | $5,674,332.00 5,552,882.390 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0015% |
37 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $5,068,233.00 5,066,888.030 USDC | 0.0014% |
38 | ![]() | USDC-USD | $1.00 0.0000420 Btc | $4,720,907.00 4,720,907.385 USDC | 0.0013% |
39 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $4,533,363.00 4,532,825.820 USDC | 0.0013% |
40 | ![]() | USDC-USDT | $0.999 0.0000420 Btc | $4,416,099.00 4,417,172.459 USDC | 0.0012% |
41 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $4,346,533.00 4,345,874.832 USDC | 0.0012% |
42 | ![]() | SHIB-USDC | $1.00 0.0000420 Btc | $4,324,249.00 358,018,297,817.015 SHIB | 99.7584% |
43 | ![]() | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9998 0.0000420 Btc | $4,025,941.00 4,026,564.428 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0011% |
44 | ![]() | USDT-USDC | $1.00 0.0000420 Btc | $3,717,370.00 3,716,223.478 USDT | 0.0010% |
45 | ![]() | USDC-EUR | $0.9997 0.0000420 Btc | $3,338,463.00 3,339,504.262 USDC | 0.0009% |
46 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $2,303,422.00 96.771 BTC | 0.0000% |
47 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.002 0.0000421 Btc | $2,160,443.00 2,122,645.808 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.0006% |
48 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $2,003,181.00 1,217.762 ETH | 0.0000% |
49 | ![]() | BTC-USDC | $0.9999 0.0000420 Btc | $2,001,637.00 85.632 BTC | 0.0000% |
50 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $1,927,759.00 80.990 BTC | 0.0000% |
51 | ![]() | 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.002 0.0000421 Btc | $1,769,913.00 75.520 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599 | 0.0000% |
52 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $1,440,447.00 60.534 BTC | 0.0000% |
53 | ![]() | NEAR-USDC | $1.00 0.0000420 Btc | $1,403,110.00 542,372.610 NEAR | 0.0002% |
54 | ![]() | ETH-USDC | $0.9999 0.0000420 Btc | $1,149,083.00 714.964 ETH | 0.0000% |
55 | ![]() | USDC-USD | $0.9998 0.0000420 Btc | $1,134,418.00 1,134,645.426 USDC | 0.0003% |
56 | ![]() | BTC-USDC | $1.00 0.0000420 Btc | $876,672.00 36.815 BTC | 0.0000% |
57 | ![]() | USDC-GBP | $0.9997 0.0000420 Btc | $869,225.00 869,523.632 USDC | 0.0002% |
58 | ![]() | FTM-USDC | $1.00 0.0000420 Btc | $868,533.00 1,762,986.310 FTM | 0.0005% |
59 | ![]() | EOS-USDC | $1.00 0.0000420 Btc | $852,702.00 766,605.300 EOS | 0.0002% |
60 | ![]() | BCH-USDC | $0.9999 0.0000420 Btc | $838,610.00 6,105.610 BCH | 0.0000% |
61 | ![]() | ETH-USDC | $0.9998 0.0000420 Btc | $837,751.00 510.000 ETH | 0.0000% |
62 | ![]() | DOGE-USDC | $0.9999 0.0000420 Btc | $798,687.00 8,873,273.530 DOGE | 0.0025% |
63 | ![]() | BTC-USDC | $0.9997 0.0000420 Btc | $755,635.00 31.751 BTC | 0.0000% |
64 | ![]() | DOGE-USDC | $0.9998 0.0000420 Btc | $743,246.00 8,312,097.599 DOGE | 0.0023% |
65 | ![]() | LTC-USDC | $0.9999 0.0000420 Btc | $672,620.00 6,950.610 LTC | 0.0000% |
66 | ![]() | UDC-USD | $1.00 0.0000420 Btc | $562,443.00 562,386.989 UDC | 0.0002% |
67 | ![]() | MATIC-USDC | $0.9999 0.0000420 Btc | $555,270.00 474,056.770 MATIC | 0.0001% |
68 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $541,454.00 541,434.050 USDC | 0.0002% |
69 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $540,792.00 540,646.720 USDC | 0.0002% |
70 | ![]() | ATOM-USDC | $1.00 0.0000420 Btc | $530,905.00 39,351.706 ATOM | 0.0000% |
71 | ![]() | USDC-USD | $0.9997 0.0000420 Btc | $513,451.00 513,599.820 USDC | 0.0001% |
72 | ![]() | USDT-USDC | $1.00 0.0000420 Btc | $431,958.00 431,862.420 USDT | 0.0001% |
73 | ![]() | FTM-USDC | $0.9999 0.0000420 Btc | $413,492.00 837,311.870 FTM | 0.0002% |
74 | ![]() | BCH-USDC | $0.9999 0.0000420 Btc | $367,477.00 2,700.221 BCH | 0.0000% |
75 | ![]() | 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X7F5C764CBC14F9669B88837CA1490CCA17C31607 | $1.001 0.0000420 Btc | $358,842.00 358,200.314 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9 | 0.0001% |
76 | ![]() | MATIC-USDC | $1.00 0.0000420 Btc | $339,327.00 291,930.735 MATIC | 0.0001% |
77 | ![]() | EOS-USDC | $0.9999 0.0000420 Btc | $312,183.00 280,955.960 EOS | 0.0001% |
78 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $304,347.00 304,331.971 USDC | 0.0001% |
79 | ![]() | 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-BUSD | $1.002 0.0000421 Btc | $271,860.00 271,356.469 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | 0.0001% |
80 | ![]() | UNI-USDC | $0.9998 0.0000420 Btc | $266,696.00 38,993.953 UNI | 0.0000% |
81 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $234,946.00 234,887.650 USDC | 0.0001% |
82 | ![]() | USDC-EUR | $1.00 0.0000420 Btc | $212,639.00 212,634.580 USDC | 0.0001% |
83 | ![]() | BNB-USDC | $0.9999 0.0000420 Btc | $212,280.00 679.315 BNB | 0.0000% |
84 | ![]() | USDC-EUR | $0.999 0.0000420 Btc | $202,715.00 202,919.366 USDC | 0.0001% |
85 | ![]() | ALGO-USDC | $0.9999 0.0000420 Btc | $194,870.00 745,874.720 ALGO | 0.0002% |
86 | ![]() | ADA-USDC | $0.9999 0.0000420 Btc | $165,474.00 426,443.000 ADA | 0.0001% |
87 | ![]() | LST-USDC | $0.9998 0.0000420 Btc | $160,508.00 211,515.080 LST | 0.0001% |
88 | ![]() | USDC-USD | $1.00 0.0000420 Btc | $155,340.00 155,339.836 USDC | 0.0000% |
89 | ![]() | USDC-USDT | $1.001 0.0000420 Btc | $154,734.00 154,637.901 USDC | 0.0000% |
90 | ![]() | AVAX-USDC | $0.9999 0.0000420 Btc | $133,977.00 6,492.690 AVAX | 0.0000% |
91 | ![]() | NEAR-USDC | $0.9998 0.0000420 Btc | $129,390.00 56,335.260 NEAR | 0.0000% |
92 | ![]() | TRX-USDC | $0.9999 0.0000420 Btc | $116,485.00 1,836,758.600 TRX | 0.0005% |
93 | ![]() | DAI-USDC | $0.9998 0.0000420 Btc | $114,684.00 114,728.400 DAI | 0.0000% |
94 | ![]() | USDC-GBP | $0.999 0.0000420 Btc | $93,812.00 93,909.790 USDC | 0.0000% |
95 | ![]() | BTC-USDC | $0.9998 0.0000420 Btc | $79,067.00 3.347 BTC | 0.0000% |
96 | ![]() | WBTC-USDC | $0.9998 0.0000420 Btc | $76,184.00 3.720 WBTC | 0.0000% |
97 | ![]() | BUSD-USDC | $0.9998 0.0000420 Btc | $74,719.00 74,749.399 BUSD | 0.0000% |
98 | ![]() | DOGE-USDC | $0.9999 0.0000420 Btc | $72,371.00 812,216.086 DOGE | 0.0002% |
99 | ![]() | USDC-USDT | $1.00 0.0000420 Btc | $66,460.00 66,461.321 USDC | 0.0000% |
100 | ![]() | USDC-USD | $1.001 0.0000420 Btc | $48,664.00 48,635.809 USDC | 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---------------