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Overview
Max Total Supply
76,019,099.32 EURC
Holders
5,145 ( 0.486%)
Market
Price
$1.08 @ 0.000489 ETH (+2.02%)
Onchain Market Cap
$81,948,589.07
Circulating Supply Market Cap
$124,980,571.00
Other Info
Token Contract (WITH 6 Decimals)
Balance
0.641033 EURCValue
$0.69 ( ~0.000312948094446857 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.078 0.0004887 Eth | $15,015,985.00 14,056,798.544 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 40.7051% |
2 | ![]() | EURC-USDC | $1.077 0.0004882 Eth | $5,435,498.00 5,049,214.000 EURC | 14.6213% |
3 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.078 0.0004889 Eth | $5,279,138.00 4,941,360.376 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 14.3090% |
4 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.077 0.0004883 Eth | $4,015,259.00 3,768,877.752 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 10.9137% |
5 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.076 0.0004881 Eth | $2,871,461.00 2,685,026.289 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 7.7752% |
6 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.076 0.0004881 Eth | $2,782,170.00 2,594,253.125 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 7.5123% |
7 | ![]() | EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V-HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | $1.078 0.0004887 Eth | $2,453,923.00 2,429,955.448 EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | 7.0366% |
8 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.068 0.0004843 Eth | $2,346,626.00 2,208,853.753 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 6.3963% |
9 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $1.087 0.0004930 Eth | $2,001,943.00 1,852,249.583 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 5.3637% |
10 | ![]() | 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8-0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | $1.076 0.0004882 Eth | $1,543,460.00 1,435,798.758 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8 | 4.1577% |
11 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.078 0.0004888 Eth | $1,459,748.00 1,367,177.459 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 3.9590% |
12 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.071 0.0004857 Eth | $1,038,606.00 974,769.212 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 2.8227% |
13 | ![]() | EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V-HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | $1.078 0.0004889 Eth | $844,215.00 835,825.738 EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | 2.4203% |
14 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.076 0.0004883 Eth | $754,787.00 708,245.845 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 2.0509% |
15 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF | $1.076 0.0004881 Eth | $496,835.00 459,540.011 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 1.3307% |
16 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.077 0.0004882 Eth | $352,576.00 330,026.984 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.9557% |
17 | ![]() | EURC-USDT | $1.073 0.0004867 Eth | $325,777.00 303,526.000 EURC | 0.8789% |
18 | ![]() | EURC-USDC | $1.074 0.0004911 Eth | $243,293.00 228,454.620 EURC | 0.6615% |
19 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.075 0.0004872 Eth | $187,631.00 176,586.677 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.5114% |
20 | ![]() | EURC-USDC | $1.072 0.0004861 Eth | $149,327.00 139,310.000 EURC | 0.4034% |
21 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.075 0.0004877 Eth | $113,788.00 106,978.372 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.3098% |
22 | ![]() | EURC-USDC | $1.08 0.0004899 Eth | $108,893.00 101,433.711 EURC | 0.2937% |
23 | ![]() | EURC-USDC | $1.081 0.0004906 Eth | $106,745.00 99,405.037 EURC | 0.2879% |
24 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.079 0.0004905 Eth | $97,012.00 90,320.981 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.2615% |
25 | ![]() | EURC-USDT | $1.073 0.0004866 Eth | $82,206.00 76,668.020 EURC | 0.2220% |
26 | ![]() | EURC-EUR | $1.077 0.0004892 Eth | $76,818.00 71,290.357 EURC | 0.2064% |
27 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X4200000000000000000000000000000000000006 | $1.078 0.0004889 Eth | $66,094.00 61,433.769 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.1779% |
28 | ![]() | EURC-USDC | $1.078 0.0004896 Eth | $32,270.00 30,184.800 EURC | 0.0874% |
29 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.079 0.0004891 Eth | $27,474.00 25,612.899 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0742% |
30 | ![]() | 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E | $1.075 0.0004873 Eth | $18,343.50 16,946.101 0XC891EB4CBDEFF6E073E859E987815ED1505C2ACD | 0.0491% |
31 | ![]() | EURC-ZAR | $1.11 0.0005019 Eth | $18,126.10 16,541.980 EURC | 0.0479% |
32 | ![]() | EURC-BTC | $1.093 0.0004961 Eth | $16,818.35 16,302.806 EURC | 0.0472% |
33 | ![]() | EURC-GDHU6WRG4IEQXM5NZ4BMPKOXHW76MZM4Y2IEMFDVXBSDP6SJY4ITNPP2-XLM | $1.071 0.0004895 Eth | $15,733.95 14,684.965 EURC-GDHU6WRG4IEQXM5NZ4BMPKOXHW76MZM4Y2IEMFDVXBSDP6SJY4ITNPP2 | 0.0425% |
34 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.077 0.0004885 Eth | $14,995.11 14,019.550 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0406% |
35 | ![]() | EUROC-USDT | $1.074 0.0004870 Eth | $12,557.48 11,651.352 EUROC | 0.0337% |
36 | ![]() | EUROC-EUR | $1.077 0.0004890 Eth | $10,216.63 9,486.492 EUROC | 0.0275% |
37 | ![]() | 0X2AE3F1EC7F1F5012CFEAB0185BFC7AA3CF0DEC22-0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | $1.082 0.0004932 Eth | $8,709.28 3.589 0X2AE3F1EC7F1F5012CFEAB0185BFC7AA3CF0DEC22 | 0.0000% |
38 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF | $1.077 0.0004917 Eth | $7,616.23 7,063.532 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0205% |
39 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0XB79DD08EA68A908A97220C76D19A6AA9CBDE4376 | $1.076 0.0004881 Eth | $3,356.69 3,145.613 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0091% |
40 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.087 0.0004930 Eth | $2,325.73 2,169.160 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 0.0063% |
41 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.08 0.0004896 Eth | $2,243.09 2,099.068 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0061% |
42 | ![]() | EUROC-EUR | $1.068 0.0004843 Eth | $2,137.60 2,001.700 EUROC | 0.0058% |
43 | ![]() | 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8-0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | $1.076 0.0004882 Eth | $1,684.09 1,569.104 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8 | 0.0045% |
44 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.073 0.0004896 Eth | $1,054.48 988.202 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0029% |
45 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.06 0.0004806 Eth | $361.34 341.300 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0010% |
46 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V | $1.077 0.0004901 Eth | $258.69 242.622 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0007% |
47 | ![]() | EURC-BRL | $1.088 0.0004933 Eth | $206.41 189.802 EURC | 0.0005% |
48 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.077 0.0004884 Eth | $175.97 162.846 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0005% |
49 | ![]() | HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR-SO11111111111111111111111111111111111111112 | $1.12 0.0004998 Eth | $165.35 147.665 HZWQBKZW8HXMN6BF2YFZNRHT3C2IXXZPKCFU7UBEDKTR | 0.0004% |
50 | ![]() | EUROC-DFI | $0.8173 0.0003711 Eth | $126.52 154.793 EUROC | 0.0004% |
51 | ![]() | EUROC-USD | $1.079 0.0004893 Eth | $85.57 79.932 EUROC | 0.0002% |
52 | ![]() | EUROC-USDC | $1.00 0.0004263 Eth | $30.00 30.000 EUROC | 0.0001% |
53 | ![]() | EUROC-USDT | $1.079 0.0004895 Eth | $27.05 25.468 EUROC | 0.0001% |
54 | ![]() | 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $1.06 0.0004805 Eth | $25.86 24.455 0X60A3E35CC302BFA44CB288BC5A4F316FDB1ADB42 | 0.0001% |
55 | ![]() | EUROC-EUR | $1.079 0.0004894 Eth | $24.27 22.496 EUROC | 0.0001% |
56 | ![]() | 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C-0X6C3F90F043A72FA612CBAC8115EE7E52BDE6E490 | $1.059 0.0004826 Eth | $10.32 9.745 0X1ABAEA1F7C830BD89ACC67EC4AF516284B1BC33C | 0.0000% |
57 | ![]() | EUROC-DUSD | $0.9052 0.0004137 Eth | $6.21 6.860 EUROC | 0.0000% |
58 | ![]() | EURC-EUR | $1.072 0.0004881 Eth | $3.18 2.970 EURC | 0.0000% |
59 | ![]() | EURC-USDC | $1.054 0.0004816 Eth | $3.18 3.014 EURC | 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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