Token USD Coin (Arb1)

 

Overview ERC20

Price
$1.00 @ 0.000636 ETH (+0.02%)
Fully Diluted Market Cap
Total Supply:
630,319,460.883283 USDC

Holders:
287,368 addresses
Balance
0 USDC

Value
$0.00
0xc32cc3706b23191e21dadcab62983745f59ea21f
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OVERVIEW

USDC is a fully collateralized US Dollar stablecoin developed by CENTRE, the open source project with Circle being the first of several forthcoming issuers.

Market

Volume (24H):$2,825,792,421.00
Market Capitalization:$43,100,729,862.00
Circulating Supply:43,099,502,816.00 USDC
Market Data Source: Coinmarketcap


Update? Click here to update the token ICO / general information
# Exchange Pair Price  24H Volume % Volume
1
LBank
ETH-USDC$1.00
0.0000435 Btc
$466,174,192.00
296,198.628 ETH
0.0324%
2
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.00
0.0000435 Btc
$284,614,705.00
288,268,002.500 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
31.5023%
3
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.00
0.0000435 Btc
$141,167,617.00
141,171,367.070 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
15.4274%
4
LBank
BTC-USDC$1.00
0.0000435 Btc
$126,503,658.00
5,499.937 BTC
0.0006%
5
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.001
0.0000435 Btc
$98,281,074.00
101,957,513.391 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
11.1420%
6
Bitforex
USDC-USDT$0.9998
0.0000435 Btc
$96,038,112.00
96,057,877.104 USDC
10.4973%
7
BitMart
ETH-USDC$1.00
0.0000435 Btc
$63,108,029.00
40,061.544 ETH
0.0044%
8
Bitforex
BTC-USDC$0.9996
0.0000435 Btc
$60,435,193.00
2,627.304 BTC
0.0003%
9
Uniswap (Arbitrum One)
0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8$1.001
0.0000435 Btc
$42,005,848.00
26,338.021 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1
0.0029%
10
BitMart
BTC-USDC$1.00
0.0000435 Btc
$38,561,098.00
1,675.624 BTC
0.0002%
11
Balancer (v2)
0X82698AECC9E28E9BB27608BD52CF57F704BD1B83-USDC$0.9996
0.0000435 Btc
$36,458,187.00
36,404,363.576 0X82698AECC9E28E9BB27608BD52CF57F704BD1B83
3.9783%
12
Canto Dex
0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD$1.00
0.0000435 Btc
$28,224,288.00
27,311,428.692 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503
2.9846%
13
ApeX Pro
ETH-USDC$0.9996
0.0000435 Btc
$27,061,767.00
16,995.590 ETH
0.0019%
14
Bitforex
LTC-USDC$0.9996
0.0000435 Btc
$26,841,939.00
305,245.417 LTC
0.0334%
15
Huobi
USDC-USDT$0.9999
0.0000435 Btc
$25,426,638.00
25,428,009.878 USDC
2.7788%
16
OKX
ETH-USDC$1.00
0.0000435 Btc
$24,935,370.00
15,666.479 ETH
0.0017%
17
BKEX
ETH-USDC$0.9996
0.0000435 Btc
$24,361,657.00
15,314.384 ETH
0.0017%
18
WhiteBIT
USDC-USDT$0.9997
0.0000435 Btc
$23,152,007.00
23,159,901.619 USDC
2.5309%
19
ApeX Pro
BTC-USDC$0.9996
0.0000435 Btc
$23,085,017.00
999.298 BTC
0.0001%
20
LBank
USDC-USDT$1.001
0.0000435 Btc
$14,955,267.00
14,947,516.406 USDC
1.6335%
21
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.00
0.0000435 Btc
$14,162,225.00
14,367,085.514 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
1.5701%
22
LBank
BCH-USDC$1.00
0.0000435 Btc
$12,236,790.00
92,060.646 BCH
0.0101%
23
BKEX
BTC-USDC$1.00
0.0000435 Btc
$11,795,521.00
510.504 BTC
0.0001%
24
Kraken
USDC-USDT$0.9998
0.0000435 Btc
$11,450,255.00
11,452,611.198 USDC
1.2516%
25
OKX
BTC-USDC$1.00
0.0000435 Btc
$11,440,835.00
495.113 BTC
0.0001%
26
Kraken
USDC-USD$0.9999
0.0000435 Btc
$10,751,412.00
10,752,487.423 USDC
1.1750%
27
BingX
ETH-USDC$1.00
0.0000435 Btc
$9,820,095.00
6,167.814 ETH
0.0007%
28
DigiFinex
BTC-USDC$0.9996
0.0000435 Btc
$9,414,495.00
409.331 BTC
0.0000%
29
Kraken
USDC-EUR$1.00
0.0000435 Btc
$8,969,984.00
8,965,617.314 USDC
0.9798%
30
DigiFinex
ETH-USDC$0.9996
0.0000435 Btc
$8,932,460.00
5,675.190 ETH
0.0006%
31
BingX
BTC-USDC$0.9996
0.0000435 Btc
$8,139,749.00
352.633 BTC
0.0000%
32
KuCoin
BTC-USDC$0.9996
0.0000435 Btc
$6,664,161.00
289.789 BTC
0.0000%
33
Uniswap (v3)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000435 Btc
$6,250,447.00
6,249,989.862 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.6830%
34
Bybit
BTC-USDC$0.9996
0.0000435 Btc
$5,621,158.00
244.637 BTC
0.0000%
35
KuCoin
USDC-USDT$1.001
0.0000435 Btc
$5,610,019.00
5,606,550.999 USDC
0.6127%
36
Bitrue
USDC-USDT$0.9999
0.0000435 Btc
$5,567,442.00
5,568,189.940 USDC
0.6085%
37
Sushiswap (Arbitrum One)
0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.006
0.0000437 Btc
$5,109,235.00
5,150,314.222 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8
0.5628%
38
KuCoin
USDT-USDC$0.9996
0.0000435 Btc
$4,446,445.00
4,447,317.603 USDT
0.4860%
39
KuCoin
ETH-USDC$0.9996
0.0000435 Btc
$4,161,606.00
2,644.827 ETH
0.0003%
40
MEXC Global
ETH-USDC$0.9996
0.0000435 Btc
$4,107,782.00
2,612.420 ETH
0.0003%
41
Uniswap (v2)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.9981
0.0000434 Btc
$4,077,639.00
4,123,013.038 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.4506%
42
BingX
USDC-USDT$0.9999
0.0000435 Btc
$3,712,842.00
3,713,256.479 USDC
0.4058%
43
Bybit
USDC-USDT$1.00
0.0000435 Btc
$2,943,239.00
2,943,255.770 USDC
0.3216%
44
Kraken
BTC-USDC$0.9996
0.0000435 Btc
$2,870,883.00
124.861 BTC
0.0000%
45
Sushiswap
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.9964
0.0000433 Btc
$2,844,994.00
2,876,365.288 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.3143%
46
MEXC Global
DOGE-USDC$0.9996
0.0000435 Btc
$2,763,110.00
31,397,595.110 DOGE
3.4312%
47
Gemini
USDC-USD$1.00
0.0000435 Btc
$2,547,871.00
2,547,870.509 USDC
0.2784%
48
Bitget
BTC-USDC$0.9996
0.0000435 Btc
$1,800,792.00
78.100 BTC
0.0000%
49
Kraken
ETH-USDC$0.9996
0.0000435 Btc
$1,540,910.00
979.995 ETH
0.0001%
50
Cryptology
BTC-USDC$0.9996
0.0000435 Btc
$1,428,275.00
62.086 BTC
0.0000%
51
Kraken
USDC-GBP$1.00
0.0000435 Btc
$1,161,906.00
1,161,450.500 USDC
0.1269%
52
Uniswap (v3)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9994
0.0000434 Btc
$1,074,101.00
46.526 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
53
MEXC Global
AVAX-USDC$0.9996
0.0000435 Btc
$1,024,555.00
49,601.020 AVAX
0.0054%
54
Bitget
ETH-USDC$0.9996
0.0000435 Btc
$1,021,057.00
641.326 ETH
0.0001%
55
Tidex
BTC-USDC$0.9996
0.0000435 Btc
$1,009,703.00
43.891 BTC
0.0000%
56
Bitget
XRP-USDC$0.9996
0.0000435 Btc
$904,558.00
2,198,010.000 XRP
0.2402%
57
BingX
DOGE-USDC$1.00
0.0000435 Btc
$902,327.00
10,137,655.999 DOGE
1.1079%
58
LBank
EOS-USDC$1.00
0.0000435 Btc
$872,527.00
795,915.600 EOS
0.0870%
59
ApeX Pro
DOGE-USDC$0.9996
0.0000435 Btc
$857,133.00
9,606,502.000 DOGE
1.0498%
60
Binance US
USDC-USD$0.9998
0.0000435 Btc
$685,955.00
686,091.990 USDC
0.0750%
61
Hotbit
USDC-USDT$0.9982
0.0000434 Btc
$664,569.00
665,788.770 USDC
0.0728%
62
BingX
MATIC-USDC$1.00
0.0000435 Btc
$615,488.00
537,584.169 MATIC
0.0587%
63
MEXC Global
MATIC-USDC$0.9996
0.0000435 Btc
$549,590.00
483,736.120 MATIC
0.0529%
64
ApeX Pro
ATOM-USDC$0.9996
0.0000435 Btc
$547,683.00
40,292.500 ATOM
0.0044%
65
MEXC Global
BCH-USDC$0.9996
0.0000435 Btc
$537,242.00
4,054.710 BCH
0.0004%
66
BKEX
ATOM-USDC$0.9996
0.0000435 Btc
$531,784.00
39,597.756 ATOM
0.0043%
67
LBank
ENS-USDC$1.00
0.0000435 Btc
$512,480.00
31,646.732 ENS
0.0035%
68
BitMart
USDC-USDT$0.9999
0.0000435 Btc
$502,514.00
502,553.760 USDC
0.0549%
69
Tidex
USDC-USDT$1.00
0.0000435 Btc
$454,819.00
454,837.880 USDC
0.0497%
70
PancakeSwap (v2)
0X2170ED0880AC9A755FD29B2688956BD959F933F8-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$1.003
0.0000436 Btc
$451,863.00
282.950 0X2170ED0880AC9A755FD29B2688956BD959F933F8
0.0000%
71
BKEX
LTC-USDC$1.00
0.0000435 Btc
$446,894.00
5,048.311 LTC
0.0006%
72
Velodrome Finance
0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$0.9988
0.0000434 Btc
$415,290.00
415,491.930 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9
0.0454%
73
Bitget
BCH-USDC$0.9996
0.0000435 Btc
$355,412.00
2,646.940 BCH
0.0003%
74
MEXC Global
EOS-USDC$0.9996
0.0000435 Btc
$352,449.00
322,497.870 EOS
0.0352%
75
Coinbase Exchange
USDT-USDC$0.9996
0.0000435 Btc
$346,093.00
346,171.140 USDT
0.0378%
76
Coinfield
BTC-USDC$1.00
0.0000434 Btc
$344,483.00
14.962 BTC
0.0000%
77
Binance US
USDC-USDT$1.00
0.0000435 Btc
$330,952.00
330,963.866 USDC
0.0362%
78
MEXC Global
ALGO-USDC$0.9996
0.0000435 Btc
$312,028.00
1,225,561.490 ALGO
0.1339%
79
BingX
UNI-USDC$1.00
0.0000435 Btc
$299,084.00
44,037.933 UNI
0.0048%
80
MEXC Global
FTM-USDC$0.9996
0.0000435 Btc
$281,453.00
629,151.200 FTM
0.0688%
81
Orderly Network
NEAR-USDC$0.9996
0.0000435 Btc
$251,573.00
103,619.380 NEAR
0.0113%
82
Bitget
BNB-USDC$0.9996
0.0000435 Btc
$248,132.00
808.154 BNB
0.0001%
83
CoinEx
USDC-USDT$1.001
0.0000435 Btc
$239,500.00
239,236.535 USDC
0.0261%
84
MEXC Global
STEPN-USDC$0.9996
0.0000435 Btc
$239,169.00
405,255.580 STEPN
0.0443%
85
BitMart
LST-USDC$0.9996
0.0000435 Btc
$203,819.00
268,040.360 LST
0.0293%
86
BingX
TRX-USDC$1.00
0.0000435 Btc
$198,245.00
3,137,532.599 TRX
0.3429%
87
Bitstamp
USDC-EUR$1.00
0.0000435 Btc
$191,194.00
191,156.940 USDC
0.0209%
88
Bitget
ADA-USDC$0.9996
0.0000435 Btc
$171,792.00
444,145.000 ADA
0.0485%
89
Coinbase Exchange
USDC-GBP$1.00
0.0000435 Btc
$171,387.00
171,319.540 USDC
0.0187%
90
Bitstamp
USDC-USD$1.00
0.0000435 Btc
$162,256.00
162,259.030 USDC
0.0177%
91
BitMart
DAI-USDC$0.9996
0.0000435 Btc
$145,739.00
145,969.800 DAI
0.0160%
92
Bitget
AVAX-USDC$0.9996
0.0000435 Btc
$138,705.00
6,819.290 AVAX
0.0007%
93
Coinbase Exchange
USDC-EUR$1.001
0.0000435 Btc
$122,084.00
121,971.960 USDC
0.0133%
94
PancakeSwap (v2)
0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-BUSD$1.002
0.0000436 Btc
$114,204.00
114,272.569 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D
0.0125%
95
Bitget
DOGE-USDC$0.9996
0.0000435 Btc
$108,327.00
1,225,198.289 DOGE
0.1339%
96
Bitget
TRX-USDC$0.9996
0.0000435 Btc
$106,856.00
1,694,857.900 TRX
0.1852%
97
KuCoin
BUSD-USDC$0.9996
0.0000435 Btc
$103,788.00
103,842.566 BUSD
0.0113%
98
Bitget
EOS-USDC$0.9996
0.0000435 Btc
$81,881.00
74,288.200 EOS
0.0081%
99
Coinsbit
USDC-USDT$0.9999
0.0000435 Btc
$34,972.00
34,976.044 USDC
0.0038%
100
Bitstamp
BTC-USDC$0.9996
0.0000435 Btc
$12,470.21
0.542 BTC
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2021-09-09
*/

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}


/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 *
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            Address.functionDelegateCall(_logic, _data);
        }
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal virtual {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}


/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(admin_);
    }

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _admin();
    }

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external virtual ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable virtual ifAdmin {
        _upgradeTo(newImplementation);
        Address.functionDelegateCall(newImplementation, data);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}

Contract Security Audit

Contract ABI

[{"inputs": [{"internalType": "address","name": "_logic","type": "address"},{"internalType": "address","name": "admin_","type": "address"},{"internalType": "bytes","name": "_data","type": "bytes"}],"stateMutability": "payable","type": "constructor"},{"anonymous": false,"inputs": [{"indexed": false,"internalType": "address","name": "previousAdmin","type": "address"},{"indexed": false,"internalType": "address","name": "newAdmin","type": "address"}],"name": "AdminChanged","type": "event"},{"anonymous": false,"inputs": [{"indexed": true,"internalType": "address","name": "implementation","type": "address"}],"name": "Upgraded","type": "event"},{"stateMutability": "payable","type": "fallback"},{"inputs": [],"name": "admin","outputs": [{"internalType": "address","name": "admin_","type": "address"}],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newAdmin","type": "address"}],"name": "changeAdmin","outputs": [],"stateMutability": "nonpayable","type": "function"},{"inputs": [],"name": "implementation","outputs": [{"internalType": "address","name": "implementation_","type": "address"}],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newImplementation","type": "address"}],"name": "upgradeTo","outputs": [],"stateMutability": "nonpayable","type": "function"},{"inputs": [{"internalType": "address","name": "newImplementation","type": "address"},{"internalType": "bytes","name": "data","type": "bytes"}],"name": "upgradeToAndCall","outputs": [],"stateMutability": "payable","type": "function"},{"stateMutability": "payable","type": "receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000001efb3f88bc88f03fd1804a5c53b7141bbef5ded8000000000000000000000000d570ace65c43af47101fc6250fd6fc63d1c22a86000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _logic (address): 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded8
Arg [1] : admin_ (address): 0xd570ace65c43af47101fc6250fd6fc63d1c22a86
Arg [2] : _data (bytes): 0x

-----Encoded View---------------


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