Note: This token's displayed name and symbol does not match its contract's Name function.
Overview
Max Total Supply
70,485,943.29 EURC
Holders
5,090 ( 0.079%)
Market
Price
$1.05 @ 0.000502 ETH (+0.63%)
Onchain Market Cap
$73,798,782.62
Circulating Supply Market Cap
$119,135,474.00
Other Info
Token Contract (WITH 6 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V-HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | $1.048 0.0005025 Eth | $21,784,532.00 21,781,194.149 EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | 45.0540% |
2 | ![]() | EURC-USDC | $1.048 0.0005022 Eth | $8,125,128.00 7,755,354.000 EURC | 16.0418% |
3 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005023 Eth | $2,917,518.00 2,786,785.681 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 5.7644% |
4 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.048 0.0005022 Eth | $2,864,540.00 2,951,879.146 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 6.1059% |
5 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.049 0.0005026 Eth | $2,031,611.00 2,130,364.717 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 4.4066% |
6 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005023 Eth | $1,908,073.00 1,823,863.306 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 3.7726% |
7 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.047 0.0005020 Eth | $1,658,136.00 1,586,550.822 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 3.2818% |
8 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005023 Eth | $1,246,819.00 1,191,125.156 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 2.4638% |
9 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.054 0.0005055 Eth | $1,053,724.00 997,429.900 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 2.0632% |
10 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.048 0.0005022 Eth | $960,330.00 1,024,817.393 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 2.1198% |
11 | ![]() | EURC-USDC | $1.048 0.0005093 Eth | $945,681.00 902,987.698 EURC | 1.8678% |
12 | ![]() | EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V-HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | $1.048 0.0005023 Eth | $581,704.00 580,938.691 EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | 1.2017% |
13 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF | $1.048 0.0005023 Eth | $421,592.00 429,607.972 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.8886% |
14 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.047 0.0005020 Eth | $358,191.00 342,203.682 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.7078% |
15 | ![]() | EURC-USDT | $1.045 0.0005009 Eth | $318,696.00 304,969.400 EURC | 0.6308% |
16 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.047 0.0005020 Eth | $309,585.00 296,141.519 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.6126% |
17 | ![]() | 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8-0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | $1.048 0.0005023 Eth | $226,377.00 216,067.629 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8 | 0.4469% |
18 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005024 Eth | $211,372.00 201,885.058 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.4176% |
19 | ![]() | EURC-USDC | $1.045 0.0005009 Eth | $148,805.00 142,403.000 EURC | 0.2946% |
20 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.05 0.0005033 Eth | $141,317.00 140,013.305 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.2896% |
21 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.048 0.0005025 Eth | $138,081.00 140,543.006 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.2907% |
22 | ![]() | EURC-EUR | $1.048 0.0005035 Eth | $113,608.00 108,401.945 EURC | 0.2242% |
23 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005036 Eth | $109,971.00 105,237.830 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.2177% |
24 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.048 0.0005025 Eth | $92,305.00 87,947.257 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.1819% |
25 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XB79DD08EA68A908A97220C76D19A6AA9CBDE4376 | $1.048 0.0005022 Eth | $88,680.00 84,840.455 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.1755% |
26 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF | $1.047 0.0005019 Eth | $46,086.00 48,006.645 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0993% |
27 | ![]() | 0X2AE3F1EC7F1F5012CFEAB0185BFC7AA3CF0DEC22-0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | $1.048 0.0005023 Eth | $38,254.00 15.695 0X2AE3F1EC7F1F5012CFEAB0185BFC7AA3CF0DEC22 | 0.0000% |
28 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.046 0.0005015 Eth | $37,056.00 37,734.908 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0781% |
29 | ![]() | EURC-USDC | $1.05 0.0005031 Eth | $36,611.00 34,873.195 EURC | 0.0721% |
30 | ![]() | EURC-USDC | $1.048 0.0005037 Eth | $33,746.00 32,204.635 EURC | 0.0666% |
31 | ![]() | EURC-GDHU6WRG4IEQXM5NZ4BMPKOXHW76MZM4Y2IEMFDVXBSDP6SJY4ITNPP2-XLM | $1.023 0.0004971 Eth | $33,333.00 32,583.944 EURC-GDHU6WRG4IEQXM5NZ4BMPKOXHW76MZM4Y2IEMFDVXBSDP6SJY4ITNPP2 | 0.0674% |
32 | ![]() | EURC-USDC | $1.049 0.0005047 Eth | $24,516.00 23,425.550 EURC | 0.0485% |
33 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.047 0.0005018 Eth | $21,615.00 19,974.104 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.0413% |
34 | ![]() | EURC-BTC | $1.049 0.0005025 Eth | $15,737.73 16,302.806 EURC | 0.0337% |
35 | ![]() | EURC-ZAR | $1.065 0.0005116 Eth | $14,303.75 13,453.770 EURC | 0.0278% |
36 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.05 0.0005031 Eth | $11,472.24 10,946.864 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0226% |
37 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.051 0.0004387 Eth | $7,909.60 7,534.415 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0156% |
38 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.053 0.0005046 Eth | $4,106.21 4,125.220 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 0.0085% |
39 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.049 0.0005030 Eth | $3,459.91 3,310.647 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0068% |
40 | ![]() | EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V-HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | $1.048 0.0004255 Eth | $3,280.23 3,288.220 EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | 0.0068% |
41 | ![]() | EUROC-EUR | $1.046 0.0005021 Eth | $3,213.31 3,072.785 EUROC | 0.0064% |
42 | ![]() | EUROC-DFI | $0.8335 0.0004006 Eth | $1,192.26 1,430.384 EUROC | 0.0030% |
43 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.048 0.0005037 Eth | $741.95 709.144 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0015% |
44 | ![]() | EUROC-EUR | $1.043 0.0005000 Eth | $338.17 324.200 EUROC | 0.0007% |
45 | ![]() | 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8-0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | $1.048 0.0005138 Eth | $317.27 302.601 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8 | 0.0006% |
46 | ![]() | EURC-EUR | $1.045 0.0005022 Eth | $285.35 273.102 EURC | 0.0006% |
47 | ![]() | EUROC-USD | $1.051 0.0005045 Eth | $255.69 244.560 EUROC | 0.0005% |
48 | ![]() | EUROC-EUR | $1.05 0.0005031 Eth | $243.95 232.407 EUROC | 0.0005% |
49 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.047 0.0005026 Eth | $156.83 150.043 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0003% |
50 | ![]() | EURC-USDC | $1.046 0.0005016 Eth | $150.22 143.550 EURC | 0.0003% |
51 | ![]() | EURC-BRL | $1.031 0.0004941 Eth | $129.12 125.252 EURC | 0.0003% |
52 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.051 0.0005037 Eth | $109.73 104.366 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0002% |
53 | ![]() | EUROC-DUSD | $0.9151 0.0004398 Eth | $65.28 71.335 EUROC | 0.0001% |
54 | ![]() | EUROC-USDT | $1.05 0.0005056 Eth | $51.10 48.766 EUROC | 0.0001% |
55 | ![]() | EUROC-USDT | $1.039 0.0004239 Eth | $30.65 29.500 EUROC | 0.0001% |
56 | ![]() | EUROC-USDC | $1.00 0.0004263 Eth | $30.00 30.000 EUROC | 0.0001% |
57 | ![]() | EURC-USDT | $1.041 0.0004361 Eth | $11.28 10.840 EURC | 0.0000% |
58 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0X6C3F90F043A72FA612CBAC8115EE7E52BDE6E490 | $1.058 0.0005093 Eth | $10.31 9.745 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 0.0000% |
Contract Source Code Verified (Exact Match)
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
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Contract ABI
API[{"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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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000a2327a938febf5fec13bacfb16ae10ecbc4cbdcf
-----Decoded View---------------
Arg [0] : implementationContract (address): 0xa2327a938Febf5FEC13baCFb16Ae10EcBc4cbDCF
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a2327a938febf5fec13bacfb16ae10ecbc4cbdcf
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