Token USD Coin
Overview [ERC-20]
Price
$1.00 @ 0.000446 Eth (+0.03%)
Fully Diluted Market Cap
Max Total Supply:
47,217,129.791725 USDC
Holders:
20,212 ( 0.069%)
Contract:
Decimals:
6
Official Site:
[ Download CSV Export ]
[ Download CSV Export ]
Market
Volume (24H) | : | $11,893,553,921.00 |
Market Capitalization | : | $24,301,474,414.00 |
Circulating Supply | : | 24,287,850,676.00 USDC |
Market Data Source: Coinmarketcap |
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | ETH-USDC | $1.0010 0.0004457 Eth | $641,999,379.0000 283,214.778 ETH | 0.0306% |
2 | ![]() | BTC-USDC | $1.0010 0.0004457 Eth | $529,253,160.0000 12,054.772 BTC | 0.0013% |
3 | ![]() | USDC-USDT | $0.9999 0.0004461 Eth | $416,005,829.0000 416,028,970.000 USDC | 45.0146% |
4 | ![]() | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9989 0.0004450 Eth | $258,900,316.0000 114,604.146 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0124% |
5 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $180,219,304.0000 80,320.262 ETH | 0.0087% |
6 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $173,109,582.0000 3,941.949 BTC | 0.0004% |
7 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $114,673,248.0000 2,611.204 BTC | 0.0003% |
8 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $96,040,976.0000 2,186.431 BTC | 0.0002% |
9 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $95,621,252.0000 95,598,992.960 USDC | 10.3439% |
10 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $78,690,944.0000 78,690,247.410 USDC | 8.5143% |
11 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $72,975,902.0000 1,662.857 BTC | 0.0002% |
12 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $71,120,361.0000 1,620.840 BTC | 0.0002% |
13 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $60,090,927.0000 1,368.762 BTC | 0.0001% |
14 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $58,379,600.0000 1,329.103 BTC | 0.0001% |
15 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $53,004,705.0000 23,394.582 ETH | 0.0025% |
16 | ![]() | ETH-USDC | $1.0010 0.0004457 Eth | $48,802,274.0000 21,529.788 ETH | 0.0023% |
17 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $46,578,393.0000 46,578,912.240 USDC | 5.0399% |
18 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $45,322,866.0000 20,190.437 ETH | 0.0022% |
19 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $43,668,113.0000 19,457.091 ETH | 0.0021% |
20 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $38,913,618.0000 17,168.865 ETH | 0.0019% |
21 | ![]() | BTC-USDC | $1.0010 0.0004457 Eth | $38,826,906.0000 883.833 BTC | 0.0001% |
22 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $29,276,444.0000 12,922.584 ETH | 0.0014% |
23 | ![]() | BTC-USDC | $0.9999 0.0004454 Eth | $28,604,720.0000 651.614 BTC | 0.0001% |
24 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $23,065,170.0000 23,066,486.407 USDC | 2.4958% |
25 | ![]() | USDC-USD | $1.0000 0.0004455 Eth | $23,032,601.0000 23,032,600.665 USDC | 2.4921% |
26 | ![]() | USDC-USDT | $0.9993 0.0004452 Eth | $22,546,200.0000 22,561,376.641 USDC | 2.4412% |
27 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $21,162,581.0000 21,162,393.702 USDC | 2.2898% |
28 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $20,001,340.0000 19,996,994.580 USDC | 2.1637% |
29 | ![]() | USDC-EUR | $0.9998 0.0004454 Eth | $16,299,261.0000 16,302,105.579 USDC | 1.7639% |
30 | ![]() | ETH-USDC | $0.9999 0.0004454 Eth | $16,296,904.0000 7,263.304 ETH | 0.0008% |
31 | ![]() | USDC-USDT | $1.0000 0.0004456 Eth | $16,106,244.0000 17,184,964.120 USDC | 1.8594% |
32 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $15,808,734.0000 360.108 BTC | 0.0000% |
33 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $15,805,704.0000 359.808 BTC | 0.0000% |
34 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $14,333,429.0000 14,333,036.950 USDC | 1.5508% |
35 | ![]() | SOL-USDC | $1.0010 0.0004457 Eth | $14,118,748.0000 221,812.422 SOL | 0.0240% |
36 | ![]() | USDC-USDT | $0.9999 0.0004454 Eth | $11,732,457.0000 11,733,526.317 USDC | 1.2696% |
37 | ![]() | USDC-USDT | $0.9999 0.0004455 Eth | $9,544,564.0000 9,545,258.000 USDC | 1.0328% |
38 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $9,068,302.0000 9,068,792.656 USDC | 0.9812% |
39 | ![]() | USDC-EUR | $1.0000 0.0004452 Eth | $8,659,501.0000 8,658,214.090 USDC | 0.9368% |
40 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $8,298,584.0000 3,697.231 ETH | 0.0004% |
41 | ![]() | XRP-USDC | $1.0010 0.0004457 Eth | $7,277,629.0000 11,600,658.420 XRP | 1.2552% |
42 | ![]() | USDT-USDC | $1.0000 0.0004455 Eth | $6,384,421.0000 6,383,624.000 USDT | 0.6907% |
43 | ![]() | USDT-USDC | $1.0000 0.0004455 Eth | $6,383,077.0000 6,382,711.000 USDT | 0.6906% |
44 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $6,349,783.0000 144.594 BTC | 0.0000% |
45 | ![]() | USDC-USDT | $1.0000 0.0004456 Eth | $6,323,816.0000 6,321,619.800 USDC | 0.6840% |
46 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $6,005,301.0000 136.799 BTC | 0.0000% |
47 | ![]() | USDT-USDC | $1.0000 0.0004455 Eth | $5,751,595.0000 5,751,185.931 USDT | 0.6223% |
48 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $5,405,179.0000 2,385.686 ETH | 0.0003% |
49 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $5,353,006.0000 2,384.904 ETH | 0.0003% |
50 | ![]() | USDC-USDT | $0.9999 0.0004454 Eth | $5,208,052.0000 5,208,527.036 USDC | 0.5636% |
51 | ![]() | USDC-USDT | $0.9997 0.0004454 Eth | $4,907,944.0000 4,909,244.092 USDC | 0.5312% |
52 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $3,885,428.0000 1,715.063 ETH | 0.0002% |
53 | ![]() | ETH-USDC | $1.0010 0.0004457 Eth | $3,853,563.0000 1,699.944 ETH | 0.0002% |
54 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $3,679,506.0000 83.973 BTC | 0.0000% |
55 | ![]() | USDC-USD | $0.9998 0.0004454 Eth | $3,625,928.0000 3,626,834.285 USDC | 0.3924% |
56 | ![]() | USDC-USDT | $0.9999 0.0004454 Eth | $3,514,693.0000 3,515,013.890 USDC | 0.3803% |
57 | ![]() | USDC-GBP | $1.0010 0.0004455 Eth | $3,481,936.0000 3,479,352.830 USDC | 0.3765% |
58 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $3,333,319.0000 75.972 BTC | 0.0000% |
59 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $2,969,464.0000 1,321.383 ETH | 0.0001% |
60 | ![]() | USDT-USDC | $0.9999 0.0004454 Eth | $2,951,502.0000 2,951,717.160 USDT | 0.3194% |
61 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $2,881,564.0000 65.583 BTC | 0.0000% |
62 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $2,853,030.0000 1,259.151 ETH | 0.0001% |
63 | ![]() | USDC-USD | $1.0000 0.0004455 Eth | $2,646,796.0000 2,646,717.000 USDC | 0.2864% |
64 | ![]() | 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $1.0010 0.0004457 Eth | $2,457,690.0000 2,456,267.038 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | 0.2658% |
65 | ![]() | USDC-GBP | $1.0000 0.0004456 Eth | $2,262,515.0000 2,261,730.669 USDC | 0.2447% |
66 | ![]() | USDC-USDT | $0.9997 0.0004454 Eth | $2,198,935.0000 2,199,496.018 USDC | 0.2380% |
67 | ![]() | SOL-USDC | $1.0000 0.0004455 Eth | $2,120,639.0000 33,326.154 SOL | 0.0036% |
68 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $2,118,066.0000 48.237 BTC | 0.0000% |
69 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $1,907,418.0000 1,907,271.670 USDC | 0.2064% |
70 | ![]() | XRP-USDC | $1.0000 0.0004455 Eth | $1,796,087.0000 2,856,770.330 XRP | 0.3091% |
71 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $1,508,448.0000 673.101 ETH | 0.0001% |
72 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $1,472,900.0000 656.282 ETH | 0.0001% |
73 | ![]() | USDT-USDC | $1.0010 0.0004455 Eth | $1,467,767.0000 1,466,490.450 USDT | 0.1587% |
74 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $1,361,995.0000 1,361,982.500 USDC | 0.1474% |
75 | ![]() | USDC-USDT | $0.9999 0.0004455 Eth | $1,338,008.0000 1,338,125.084 USDC | 0.1448% |
76 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $1,120,915.0000 25.530 BTC | 0.0000% |
77 | ![]() | USDC-CAD | $0.9989 0.0004450 Eth | $1,116,733.0000 1,117,990.006 USDC | 0.1210% |
78 | ![]() | USDV-USDC | $1.0000 0.0004455 Eth | $1,113,303.0000 1,114,098.680 USDV | 0.1205% |
79 | ![]() | BTC-USDC | $1.0000 0.0004457 Eth | $1,063,212.0000 24.211 BTC | 0.0000% |
80 | ![]() | XRP-USDC | $0.9999 0.0004454 Eth | $1,058,222.0000 1,670,370.008 XRP | 0.1807% |
81 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $962,065.0000 962,086.560 USDC | 0.1041% |
82 | ![]() | USDC-USDT | $1.0000 0.0004456 Eth | $950,643.0000 950,379.000 USDC | 0.1028% |
83 | ![]() | USDC-USDT | $1.0000 0.0004457 Eth | $777,798.0000 777,543.216 USDC | 0.0841% |
84 | ![]() | USDC-USDT | $0.9999 0.0004454 Eth | $673,631.0000 673,698.636 USDC | 0.0729% |
85 | ![]() | USDC-AUD | $0.9998 0.0004454 Eth | $645,324.0000 645,430.798 USDC | 0.0698% |
86 | ![]() | USDC-EUR | $0.9994 0.0004452 Eth | $593,359.0000 594,717.045 USDC | 0.0643% |
87 | ![]() | USDC-USDT | $1.0000 0.0004454 Eth | $502,181.0000 502,176.500 USDC | 0.0543% |
88 | ![]() | USDC-USDT | $1.0000 0.0004456 Eth | $417,860.0000 417,746.690 USDC | 0.0452% |
89 | ![]() | USDC-USDT | $1.0000 0.0004455 Eth | $397,082.0000 397,002.100 USDC | 0.0430% |
90 | ![]() | ETH-USDC | $1.0000 0.0004455 Eth | $387,016.0000 172.489 ETH | 0.0000% |
91 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $282,407.0000 6.430 BTC | 0.0000% |
92 | ![]() | USDC-AUD | $0.9985 0.0004448 Eth | $254,239.0000 254,614.217 USDC | 0.0275% |
93 | ![]() | LTC-USDC | $1.0000 0.0004455 Eth | $152,703.0000 2,101.254 LTC | 0.0002% |
94 | ![]() | USDC-USDT | $0.9995 0.0004452 Eth | $125,865.0000 125,882.659 USDC | 0.0136% |
95 | ![]() | SOL-USDC | $1.0000 0.0004455 Eth | $111,503.0000 1,762.930 SOL | 0.0002% |
96 | ![]() | TRX-USDC | $1.0000 0.0004455 Eth | $91,474.0000 872,980.000 TRX | 0.0945% |
97 | ![]() | BTC-USDC | $1.0000 0.0004455 Eth | $83,994.0000 1.912 BTC | 0.0000% |
98 | ![]() | APE-USDC | $1.0000 0.0004455 Eth | $60,974.0000 37,211.400 APE | 0.0040% |
99 | ![]() | ETH-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.0010 0.0004459 Eth | $32,551.0000 14.379 ETH | 0.0000% |
100 | ![]() | USDT-USDC | $1.0010 0.0004457 Eth | $23,081.0000 23,064.534 USDT | 0.0025% |
Contract Name:
FiatTokenProxy
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
Yes with 10000000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
/** * SPDX-License-Identifier: MIT * * Copyright (c) 2018-2020 CENTRE SECZ * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ pragma solidity 0.6.12; import { AdminUpgradeabilityProxy } from "../upgradeability/AdminUpgradeabilityProxy.sol"; /** * @title FiatTokenProxy * @dev This contract proxies FiatToken calls and enables FiatToken upgrades */ contract FiatTokenProxy is AdminUpgradeabilityProxy { constructor(address implementationContract) public AdminUpgradeabilityProxy(implementationContract) {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
/** * SPDX-License-Identifier: MIT * * Copyright (c) 2018 zOS Global Limited. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ pragma solidity 0.6.12; import { Proxy } from "./Proxy.sol"; import { Address } from "@openzeppelin/contracts/utils/Address.sol"; /** * @notice This contract implements a proxy that allows to change the * implementation address to which it will delegate. * Such a change is called an implementation upgrade. * @dev Forked from https://github.com/zeppelinos/zos-lib/blob/8a16ef3ad17ec7430e3a9d2b5e3f39b8204f8c8d/contracts/upgradeability/UpgradeabilityProxy.sol * Modifications: * 1. Reformat, conform to Solidity 0.6 syntax, and add error messages (5/13/20) * 2. Use Address utility library from the latest OpenZeppelin (5/13/20) */ contract UpgradeabilityProxy is Proxy { /** * @dev Emitted when the implementation is upgraded. * @param implementation Address of the new implementation. */ event Upgraded(address implementation); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "org.zeppelinos.proxy.implementation", and is * validated in the constructor. */ bytes32 private constant IMPLEMENTATION_SLOT = 0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3; /** * @dev Contract constructor. * @param implementationContract Address of the initial implementation. */ constructor(address implementationContract) public { assert( IMPLEMENTATION_SLOT == keccak256("org.zeppelinos.proxy.implementation") ); _setImplementation(implementationContract); } /** * @dev Returns the current implementation. * @return impl Address of the current implementation */ function _implementation() internal override view returns (address impl) { bytes32 slot = IMPLEMENTATION_SLOT; assembly { impl := sload(slot) } } /** * @dev Upgrades the proxy to a new implementation. * @param newImplementation Address of the new implementation. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Sets the implementation address of the proxy. * @param newImplementation Address of the new implementation. */ function _setImplementation(address newImplementation) private { require( Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address" ); bytes32 slot = IMPLEMENTATION_SLOT; assembly { sstore(slot, newImplementation) } } }
/** * SPDX-License-Identifier: MIT * * Copyright (c) 2018 zOS Global Limited. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ pragma solidity 0.6.12; /** * @notice Implements delegation of calls to other contracts, with proper * forwarding of return values and bubbling of failures. * It defines a fallback function that delegates all calls to the address * returned by the abstract _implementation() internal function. * @dev Forked from https://github.com/zeppelinos/zos-lib/blob/8a16ef3ad17ec7430e3a9d2b5e3f39b8204f8c8d/contracts/upgradeability/Proxy.sol * Modifications: * 1. Reformat and conform to Solidity 0.6 syntax (5/13/20) */ abstract contract Proxy { /** * @dev Fallback function. * Implemented entirely in `_fallback`. */ fallback() external payable { _fallback(); } /** * @return The Address of the implementation. */ function _implementation() internal virtual view returns (address); /** * @dev Delegates execution to an implementation contract. * This is a low level function that doesn't return to its internal call site. * It will return to the external caller whatever the implementation returns. * @param implementation Address to delegate. */ function _delegate(address implementation) internal { 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 Function that is run as the first thing in the fallback function. * Can be redefined in derived contracts to add functionality. * Redefinitions must call super._willFallback(). */ function _willFallback() internal virtual {} /** * @dev fallback implementation. * Extracted to enable manual triggering. */ function _fallback() internal { _willFallback(); _delegate(_implementation()); } }
/** * SPDX-License-Identifier: MIT * * Copyright (c) 2018 zOS Global Limited. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ pragma solidity 0.6.12; import { UpgradeabilityProxy } from "./UpgradeabilityProxy.sol"; /** * @notice This contract combines an upgradeability proxy with an authorization * mechanism for administrative tasks. * @dev Forked from https://github.com/zeppelinos/zos-lib/blob/8a16ef3ad17ec7430e3a9d2b5e3f39b8204f8c8d/contracts/upgradeability/AdminUpgradeabilityProxy.sol * Modifications: * 1. Reformat, conform to Solidity 0.6 syntax, and add error messages (5/13/20) * 2. Remove ifAdmin modifier from admin() and implementation() (5/13/20) */ contract AdminUpgradeabilityProxy is UpgradeabilityProxy { /** * @dev Emitted when the administration has been transferred. * @param previousAdmin Address of the previous admin. * @param newAdmin Address of the new admin. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "org.zeppelinos.proxy.admin", and is * validated in the constructor. */ bytes32 private constant ADMIN_SLOT = 0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b; /** * @dev Modifier to check whether the `msg.sender` is the admin. * If it is, it will run the function. Otherwise, it will delegate the call * to the implementation. */ modifier ifAdmin() { if (msg.sender == _admin()) { _; } else { _fallback(); } } /** * @dev Contract constructor. * It sets the `msg.sender` as the proxy administrator. * @param implementationContract address of the initial implementation. */ constructor(address implementationContract) public UpgradeabilityProxy(implementationContract) { assert(ADMIN_SLOT == keccak256("org.zeppelinos.proxy.admin")); _setAdmin(msg.sender); } /** * @return The address of the proxy admin. */ function admin() external view returns (address) { return _admin(); } /** * @return The address of the implementation. */ function implementation() external view returns (address) { return _implementation(); } /** * @dev Changes the admin of the proxy. * Only the current admin can call this function. * @param newAdmin Address to transfer proxy administration to. */ function changeAdmin(address newAdmin) external ifAdmin { require( newAdmin != address(0), "Cannot change the admin of a proxy to the zero address" ); emit AdminChanged(_admin(), newAdmin); _setAdmin(newAdmin); } /** * @dev Upgrade the backing implementation of the proxy. * Only the admin can call this function. * @param newImplementation Address of the new implementation. */ function upgradeTo(address newImplementation) external ifAdmin { _upgradeTo(newImplementation); } /** * @dev Upgrade the backing implementation of the proxy and call a function * on the new implementation. * This is useful to initialize the proxied contract. * @param newImplementation Address of the new implementation. * @param data Data to send as msg.data in the low level call. * It should include the signature and the parameters of the function to be * called, as described in * https://solidity.readthedocs.io/en/develop/abi-spec.html#function-selector-and-argument-encoding. */ function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin { _upgradeTo(newImplementation); // prettier-ignore // solhint-disable-next-line avoid-low-level-calls (bool success,) = address(this).call{value: msg.value}(data); // solhint-disable-next-line reason-string require(success); } /** * @return adm The admin slot. */ function _admin() internal view returns (address adm) { bytes32 slot = ADMIN_SLOT; assembly { adm := sload(slot) } } /** * @dev Sets the address of the proxy admin. * @param newAdmin Address of the new proxy admin. */ function _setAdmin(address newAdmin) internal { bytes32 slot = ADMIN_SLOT; assembly { sstore(slot, newAdmin) } } /** * @dev Only fall back when the sender is not the admin. */ function _willFallback() internal override { require( msg.sender != _admin(), "Cannot call fallback function from the proxy admin" ); super._willFallback(); } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 10000000 }, "evmVersion": "istanbul", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"implementationContract","type":"address"}],"stateMutability":"nonpayable","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":false,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","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"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000bd17deee53a58b48548117a11a2e7bbf2d0d6fa7
-----Decoded View---------------
Arg [0] : implementationContract (address): 0xbd17DEee53a58B48548117a11a2E7bbF2D0d6Fa7
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000bd17deee53a58b48548117a11a2e7bbf2d0d6fa7