Token USD Coin (Arb1)

 

Overview ERC20

Price
$1.00 @ 0.000795 ETH (+0.08%)
Fully Diluted Market Cap
Total Supply:
627,101,625.740853 USDC

Holders:
242,884 addresses
Balance
37,224.696655 USDC

Value
$37,261.92 ( ~29.5788 ETH) [0.0059%]
0x8165c70b01b7807351ef0c5ffd3ef010cabc16fb
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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):$1,621,430,585.00
Market Capitalization:$43,343,514,505.00
Circulating Supply:43,301,767,488.00 USDC
Market Data Source: Coinmarketcap


Update? Click here to update the token ICO / general information
# Exchange Pair Price  24H Volume % Volume
1
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.006
0.0000592 Btc
$209,345,090.00
208,510,924.739 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.2387%
2
MEXC Global
ETH-USDC$1.001
0.0000589 Btc
$133,306,680.00
105,724.680 ETH
0.0001%
3
Kraken
USDC-USDT$1.001
0.0000589 Btc
$103,093,300.00
103,023,862.955 USDC
0.1179%
4
MEXC Global
BTC-USDC$1.001
0.0000589 Btc
$81,809,016.00
4,814.563 BTC
0.0000%
5
Bitforex
USDC-USDT$1.001
0.0000589 Btc
$68,452,815.00
68,408,276.098 USDC
0.0783%
6
Bitforex
BTC-USDC$1.001
0.0000589 Btc
$53,866,861.00
3,170.493 BTC
0.0000%
7
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.006
0.0000592 Btc
$46,103,656.00
45,828,447.477 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0525%
8
Uniswap (Arbitrum One)
0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8$1.001
0.0000589 Btc
$24,700,113.00
19,518.546 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1
0.0000%
9
WhiteBIT
USDC-USDT$1.00
0.0000589 Btc
$23,355,273.00
23,349,414.821 USDC
0.0267%
10
XT.COM
USDC-USDT$1.00
0.0000589 Btc
$13,213,994.00
13,208,834.850 USDC
0.0151%
11
Huobi
USDC-USDT$1.001
0.0000589 Btc
$13,112,237.00
13,103,096.515 USDC
0.0150%
12
BitMart
BTC-USDC$1.001
0.0000589 Btc
$12,698,382.00
747.369 BTC
0.0000%
13
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.006
0.0000592 Btc
$12,607,322.00
12,590,904.906 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0144%
14
BingX
BTC-USDC$1.001
0.0000589 Btc
$10,981,281.00
646.824 BTC
0.0000%
15
BKEX
ETH-USDC$1.001
0.0000589 Btc
$9,954,102.00
7,852.129 ETH
0.0000%
16
WhiteBIT
BTC-USDC$1.001
0.0000589 Btc
$8,719,281.00
513.268 BTC
0.0000%
17
Bybit
ETH-USDC$1.001
0.0000589 Btc
$7,750,059.00
6,145.072 ETH
0.0000%
18
BKEX
BTC-USDC$1.001
0.0000589 Btc
$7,553,043.00
445.003 BTC
0.0000%
19
DigiFinex
USDC-USDT$1.001
0.0000589 Btc
$7,515,673.00
7,511,534.412 USDC
0.0086%
20
OKX
ETH-USDC$1.001
0.0000589 Btc
$7,028,290.00
5,545.434 ETH
0.0000%
21
Bybit
USDC-USDT$1.00
0.0000589 Btc
$5,312,904.00
5,310,681.050 USDC
0.0061%
22
DigiFinex
ETH-USDC$1.001
0.0000589 Btc
$5,109,102.00
4,049.990 ETH
0.0000%
23
BingX
ETH-USDC$1.001
0.0000589 Btc
$4,839,485.00
3,818.874 ETH
0.0000%
24
Kraken
USDC-USD$0.9999
0.0000589 Btc
$4,619,496.00
4,619,957.612 USDC
0.0053%
25
Uniswap (v3)
0X4FABB145D64652A948D72533023F6E7A623C7C53-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.006
0.0000592 Btc
$4,078,691.00
4,053,945.961 0X4FABB145D64652A948D72533023F6E7A623C7C53
0.0046%
26
KuCoin
USDC-USDT$1.00
0.0000589 Btc
$3,902,019.00
3,900,790.147 USDC
0.0045%
27
Uniswap (v3)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.006
0.0000592 Btc
$3,867,925.00
3,844,297.102 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.0044%
28
OKX
BTC-USDC$1.001
0.0000589 Btc
$3,600,860.00
212.154 BTC
0.0000%
29
Bybit
BTC-USDC$1.001
0.0000589 Btc
$3,508,425.00
206.472 BTC
0.0000%
30
BKEX
USDC-USDT$1.001
0.0000589 Btc
$3,433,181.00
3,431,241.467 USDC
0.0039%
31
KuCoin
BTC-USDC$1.001
0.0000589 Btc
$2,946,634.00
173.424 BTC
0.0000%
32
Sushiswap (Arbitrum One)
0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$0.9943
0.0000585 Btc
$2,910,619.00
2,933,366.243 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8
0.0034%
33
Uniswap (v2)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.003
0.0000590 Btc
$2,618,280.00
2,623,879.943 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0030%
34
MEXC Global
DOGE-USDC$1.001
0.0000589 Btc
$2,513,286.00
24,635,804.100 DOGE
0.0282%
35
KuCoin
ETH-USDC$1.001
0.0000589 Btc
$2,475,903.00
1,963.835 ETH
0.0000%
36
DigiFinex
BTC-USDC$1.001
0.0000589 Btc
$2,300,987.00
135.491 BTC
0.0000%
37
BitMart
ETH-USDC$1.001
0.0000589 Btc
$2,280,824.00
1,809.097 ETH
0.0000%
38
KuCoin
USDT-USDC$1.001
0.0000589 Btc
$2,021,077.00
2,019,590.358 USDT
0.0023%
39
Hotbit
USDC-USDT$0.9993
0.0000588 Btc
$1,771,494.00
1,772,814.050 USDC
0.0020%
40
MEXC Global
XRP-USDC$1.001
0.0000589 Btc
$1,753,560.00
4,476,972.710 XRP
0.0051%
41
Bitget
BTC-USDC$1.001
0.0000589 Btc
$1,675,680.00
98.691 BTC
0.0000%
42
Kraken
USDC-EUR$1.001
0.0000589 Btc
$1,567,304.00
1,565,475.882 USDC
0.0018%
43
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.006
0.0000592 Btc
$1,539,183.00
1,530,713.951 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0018%
44
WhiteBIT
ETH-USDC$1.001
0.0000589 Btc
$1,514,330.00
1,201.001 ETH
0.0000%
45
ZigZag (Arbitrum)
WETH-USDC$1.001
0.0000589 Btc
$1,387,236.00
1,103.070 WETH
0.0000%
46
Kraken
BTC-USDC$0.9998
0.0000589 Btc
$1,380,315.00
81.343 BTC
0.0000%
47
Sushiswap
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.005
0.0000592 Btc
$1,209,732.00
1,209,008.217 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0014%
48
MEXC Global
AVAX-USDC$1.001
0.0000589 Btc
$1,082,930.00
79,143.750 AVAX
0.0001%
49
MEXC Global
BCH-USDC$1.001
0.0000589 Btc
$959,254.00
8,629.780 BCH
0.0000%
50
MEXC Global
EOS-USDC$1.001
0.0000589 Btc
$915,865.00
982,170.280 EOS
0.0011%
51
Binance US
USDC-USD$1.00
0.0000589 Btc
$915,006.00
915,005.651 USDC
0.0010%
52
Kraken
ETH-USDC$0.9998
0.0000589 Btc
$897,456.00
712.514 ETH
0.0000%
53
Bitget
ETH-USDC$1.001
0.0000589 Btc
$883,398.00
695.605 ETH
0.0000%
54
Canto Dex
0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD$1.001
0.0000589 Btc
$865,514.00
851,888.579 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503
0.0010%
55
MEXC Global
SOL-USDC$1.001
0.0000589 Btc
$854,973.00
63,379.710 SOL
0.0001%
56
MEXC Global
SHIB-USDC$1.001
0.0000589 Btc
$807,070.00
86,761,228,919.000 SHIB
99.3265%
57
KyberSwap Elastic (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.001
0.0000589 Btc
$806,824.00
806,280.391 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0009%
58
Uniswap (v3)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.006
0.0000592 Btc
$748,242.00
44.022 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
59
Gemini
USDC-USD$0.9993
0.0000588 Btc
$624,494.00
624,912.941 USDC
0.0007%
60
PancakeSwap (v2)
0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-BUSD$1.005
0.0000592 Btc
$599,385.00
597,977.919 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D
0.0007%
61
Coinsbit
BTC-USDC$1.00
0.0000589 Btc
$596,582.00
35.150 BTC
0.0000%
62
Maiar
WEGLD-BD4D79-USDC-C76F1F$1.00
0.0000589 Btc
$546,860.00
12,509.091 WEGLD-BD4D79
0.0000%
63
Tidex
USDC-USDT$1.001
0.0000589 Btc
$525,765.00
525,468.038 USDC
0.0006%
64
BitMart
USDC-USDT$1.00
0.0000589 Btc
$484,206.00
483,979.520 USDC
0.0006%
65
PancakeSwap (v2)
0X2170ED0880AC9A755FD29B2688956BD959F933F8-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$1.005
0.0000592 Btc
$462,713.00
365.004 0X2170ED0880AC9A755FD29B2688956BD959F933F8
0.0000%
66
BKEX
BCH-USDC$1.001
0.0000589 Btc
$450,797.00
4,055.454 BCH
0.0000%
67
Bitget
XRP-USDC$1.001
0.0000589 Btc
$446,020.00
1,139,211.000 XRP
0.0013%
68
Tidex
BTC-USDC$1.001
0.0000589 Btc
$434,034.00
25.542 BTC
0.0000%
69
Quickswap
0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$1.001
0.0000589 Btc
$432,002.00
429,015.437 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174
0.0005%
70
Coinbase Exchange
USDT-USDC$1.001
0.0000589 Btc
$420,979.00
420,554.880 USDT
0.0005%
71
Bitget
LTC-USDC$1.001
0.0000589 Btc
$407,101.00
5,309.614 LTC
0.0000%
72
MEXC Global
TRX-USDC$1.001
0.0000589 Btc
$396,304.00
7,312,739.960 TRX
0.0084%
73
MEXC Global
FTM-USDC$1.001
0.0000589 Btc
$395,311.00
1,637,016.720 FTM
0.0019%
74
BitMart
DOGE-USDC$1.001
0.0000589 Btc
$382,600.00
3,743,998.000 DOGE
0.0043%
75
Bitget
BCH-USDC$1.001
0.0000589 Btc
$316,727.00
2,848.746 BCH
0.0000%
76
Velodrome Finance
0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$1.001
0.0000589 Btc
$301,454.00
299,523.481 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9
0.0003%
77
Uniswap (v3)
0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.006
0.0000592 Btc
$289,798.00
274,527.272 0X1A7E4E63778B4F12A199C062F3EFDD288AFCBCE8
0.0003%
78
BKEX
APE-USDC$1.001
0.0000589 Btc
$282,012.00
71,203.902 APE
0.0001%
79
BitMart
ADA-USDC$1.001
0.0000589 Btc
$272,287.00
842,758.000 ADA
0.0010%
80
Binance US
BTC-USDC$1.001
0.0000589 Btc
$271,732.00
15.984 BTC
0.0000%
81
Bibox
USDC-USDT$1.001
0.0000589 Btc
$265,392.00
265,254.000 USDC
0.0003%
82
PancakeSwap (v2)
0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-USDT$1.004
0.0000591 Btc
$245,399.00
244,902.224 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D
0.0003%
83
Coinfield
BTC-USDC$0.9995
0.0000589 Btc
$234,179.00
13.803 BTC
0.0000%
84
Bybit
BIT-USDC$1.001
0.0000589 Btc
$164,672.00
532,581.950 BIT
0.0006%
85
BKEX
MATIC-USDC$1.001
0.0000589 Btc
$161,950.00
176,156.055 MATIC
0.0002%
86
Bitfinex
UDC-USDT$1.001
0.0000589 Btc
$159,292.00
159,082.391 UDC
0.0002%
87
Independent Reserve
USDC-AUD$0.9996
0.0000588 Btc
$155,186.00
155,245.725 USDC
0.0002%
88
BitMart
DAI-USDC$1.001
0.0000589 Btc
$152,365.00
152,251.400 DAI
0.0002%
89
BitMart
BUSD-USDC$1.001
0.0000589 Btc
$145,995.00
145,871.200 BUSD
0.0002%
90
Bitvavo
USDC-EUR$1.001
0.0000589 Btc
$142,075.00
141,903.661 USDC
0.0002%
91
Bitstamp
USDC-USD$0.9987
0.0000588 Btc
$139,063.00
139,245.444 USDC
0.0002%
92
CoinEx
USDC-USDT$1.001
0.0000590 Btc
$113,358.00
113,232.328 USDC
0.0001%
93
Okcoin
USDC-USD$1.001
0.0000589 Btc
$86,594.00
86,550.547 USDC
0.0001%
94
BKEX
ATOM-USDC$1.001
0.0000589 Btc
$82,754.00
8,120.957 ATOM
0.0000%
95
BKEX
SOL-USDC$1.001
0.0000589 Btc
$77,658.00
5,737.284 SOL
0.0000%
96
Bitstamp
USDC-EUR$1.001
0.0000589 Btc
$72,836.00
72,777.026 USDC
0.0001%
97
BKEX
NEAR-USDC$1.001
0.0000589 Btc
$54,097.00
31,734.227 NEAR
0.0000%
98
BitMart
MATIC-USDC$1.001
0.0000589 Btc
$49,629.00
54,137.400 MATIC
0.0001%
99
Coinsbit
USDC-USDT$1.00
0.0000589 Btc
$39,873.00
39,853.607 USDC
0.0000%
100
Bitstamp
BTC-USDC$1.001
0.0000589 Btc
$5,778.63
0.340 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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