Token USD Coin (Arb1)

 

Overview ERC20

Price
$1.00 @ 0.000630 ETH (+0.05%)
Fully Diluted Market Cap
Total Supply:
629,603,380.133438 USDC

Holders:
287,159 addresses
Balance
18,555,382.620929 USDC

Value
$18,555,382.62 ( ~11,693.7336 ETH) [2.9472%]
0x805ba50001779ced4f59cff63aea527d12b94829
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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):$3,144,720,874.00
Market Capitalization:$43,120,410,480.00
Circulating Supply:43,098,530,425.00 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$0.9996
0.0000435 Btc
$474,879,549.00
299,776.596 ETH
0.0022%
2
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.004
0.0000437 Btc
$369,104,448.00
369,719,290.913 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
2.6657%
3
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.004
0.0000437 Btc
$196,725,462.00
195,874,031.136 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
1.4122%
4
LBank
BTC-USDC$0.9996
0.0000435 Btc
$125,002,536.00
5,440.510 BTC
0.0000%
5
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.004
0.0000437 Btc
$102,052,483.00
104,849,638.890 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.7560%
6
Bitforex
USDC-USDT$0.9999
0.0000435 Btc
$92,215,939.00
92,221,270.382 USDC
0.6649%
7
Bitforex
BTC-USDC$0.9996
0.0000435 Btc
$80,252,425.00
3,492.319 BTC
0.0000%
8
BitMart
ETH-USDC$1.00
0.0000435 Btc
$64,859,638.00
40,976.226 ETH
0.0003%
9
Uniswap (Arbitrum One)
0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8$1.00
0.0000435 Btc
$52,925,412.00
33,260.478 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1
0.0002%
10
BitMart
BTC-USDC$1.00
0.0000435 Btc
$41,970,103.00
1,827.479 BTC
0.0000%
11
ApeX Pro
ETH-USDC$0.9996
0.0000435 Btc
$32,992,894.00
20,749.140 ETH
0.0001%
12
Canto Dex
0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD$0.9998
0.0000435 Btc
$31,085,718.00
30,094,773.140 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503
0.2170%
13
ApeX Pro
BTC-USDC$0.9996
0.0000435 Btc
$29,236,199.00
1,266.911 BTC
0.0000%
14
Bitforex
LTC-USDC$0.9996
0.0000435 Btc
$27,560,651.00
311,063.061 LTC
0.0022%
15
OKX
ETH-USDC$0.9996
0.0000435 Btc
$25,782,237.00
16,198.032 ETH
0.0001%
16
Huobi
USDC-USDT$0.9996
0.0000435 Btc
$25,546,580.00
25,554,934.839 USDC
0.1842%
17
BKEX
ETH-USDC$1.00
0.0000435 Btc
$25,002,280.00
15,698.683 ETH
0.0001%
18
WhiteBIT
USDC-USDT$0.9994
0.0000435 Btc
$23,760,065.00
23,774,576.390 USDC
0.1714%
19
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.004
0.0000437 Btc
$19,664,268.00
19,681,771.612 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1419%
20
LBank
USDC-USDT$0.9999
0.0000435 Btc
$15,395,789.00
15,396,678.956 USDC
0.1110%
21
Kraken
USDC-USD$1.00
0.0000435 Btc
$13,978,755.00
13,978,755.096 USDC
0.1008%
22
BKEX
BTC-USDC$0.9996
0.0000435 Btc
$13,235,094.00
573.321 BTC
0.0000%
23
OKX
BTC-USDC$0.9996
0.0000435 Btc
$13,062,924.00
565.850 BTC
0.0000%
24
Kraken
USDC-USDT$1.00
0.0000435 Btc
$12,648,140.00
12,648,671.147 USDC
0.0912%
25
BingX
ETH-USDC$1.00
0.0000435 Btc
$11,456,532.00
7,200.042 ETH
0.0001%
26
BingX
BTC-USDC$1.00
0.0000435 Btc
$10,623,281.00
460.353 BTC
0.0000%
27
DigiFinex
BTC-USDC$1.00
0.0000435 Btc
$10,578,170.00
460.072 BTC
0.0000%
28
DigiFinex
ETH-USDC$1.00
0.0000435 Btc
$9,282,570.00
5,856.510 ETH
0.0000%
29
Bybit
BTC-USDC$1.00
0.0000435 Btc
$8,476,435.00
368.500 BTC
0.0000%
30
KuCoin
BTC-USDC$1.00
0.0000435 Btc
$7,978,521.00
346.821 BTC
0.0000%
31
Kraken
USDC-EUR$1.001
0.0000435 Btc
$7,316,211.00
7,311,854.026 USDC
0.0527%
32
Uniswap (v3)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.004
0.0000437 Btc
$7,288,377.00
7,257,847.570 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.0523%
33
Bitrue
USDC-USDT$1.00
0.0000435 Btc
$6,890,928.00
6,888,628.610 USDC
0.0497%
34
Sushiswap (Arbitrum One)
0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$0.9996
0.0000435 Btc
$6,866,905.00
6,848,328.462 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8
0.0494%
35
KuCoin
USDC-USDT$0.9997
0.0000435 Btc
$6,745,094.00
6,747,209.271 USDC
0.0486%
36
MEXC Global
ETH-USDC$1.00
0.0000435 Btc
$4,995,606.00
3,147.796 ETH
0.0000%
37
KuCoin
ETH-USDC$1.00
0.0000435 Btc
$4,755,632.00
2,996.850 ETH
0.0000%
38
KuCoin
USDT-USDC$1.00
0.0000435 Btc
$4,463,143.00
4,461,715.642 USDT
0.0322%
39
Uniswap (v2)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.003
0.0000436 Btc
$4,384,564.00
4,394,800.081 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0317%
40
BingX
USDC-USDT$0.9994
0.0000435 Btc
$4,323,930.00
4,325,469.609 USDC
0.0312%
41
Sushiswap
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.005
0.0000437 Btc
$3,461,129.00
3,460,682.482 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0250%
42
Kraken
BTC-USDC$0.9996
0.0000435 Btc
$3,337,881.00
145.201 BTC
0.0000%
43
Gemini
USDC-USD$1.00
0.0000435 Btc
$3,130,825.00
3,130,887.262 USDC
0.0226%
44
Bybit
USDC-USDT$0.9997
0.0000435 Btc
$2,996,964.00
2,997,894.140 USDC
0.0216%
45
BKEX
USDC-USDT$0.9999
0.0000435 Btc
$2,846,867.00
2,847,154.659 USDC
0.0205%
46
Kraken
USDC-GBP$1.00
0.0000435 Btc
$2,681,356.00
2,680,638.265 USDC
0.0193%
47
MEXC Global
DOGE-USDC$1.00
0.0000435 Btc
$2,530,115.00
28,167,368.500 DOGE
0.2031%
48
MEXC Global
BTC-USDC$1.00
0.0000435 Btc
$2,028,769.00
88.212 BTC
0.0000%
49
MEXC Global
USDC-USDT$0.9997
0.0000435 Btc
$2,001,384.00
2,001,991.980 USDC
0.0144%
50
Cryptology
BTC-USDC$0.9996
0.0000435 Btc
$1,821,100.00
79.250 BTC
0.0000%
51
Bitget
BTC-USDC$1.00
0.0000435 Btc
$1,807,408.00
78.340 BTC
0.0000%
52
Uniswap (v3)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.005
0.0000437 Btc
$1,758,559.00
75.872 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
53
Kraken
ETH-USDC$0.9996
0.0000435 Btc
$1,554,948.00
983.162 ETH
0.0000%
54
Tidex
BTC-USDC$1.00
0.0000435 Btc
$1,067,709.00
46.381 BTC
0.0000%
55
Bitget
ETH-USDC$1.00
0.0000435 Btc
$999,680.00
627.241 ETH
0.0000%
56
MEXC Global
AVAX-USDC$1.00
0.0000435 Btc
$897,534.00
44,124.030 AVAX
0.0003%
57
BingX
DOGE-USDC$1.00
0.0000435 Btc
$855,874.00
9,677,328.299 DOGE
0.0698%
58
LBank
EOS-USDC$0.9996
0.0000435 Btc
$853,099.00
778,997.400 EOS
0.0056%
59
ApeX Pro
DOGE-USDC$0.9996
0.0000435 Btc
$793,614.00
8,893,986.000 DOGE
0.0641%
60
Binance US
USDC-USD$0.9998
0.0000435 Btc
$687,406.00
687,543.613 USDC
0.0050%
61
MEXC Global
MATIC-USDC$1.00
0.0000435 Btc
$656,035.00
579,502.920 MATIC
0.0042%
62
BingX
MATIC-USDC$1.00
0.0000435 Btc
$630,783.00
553,389.406 MATIC
0.0040%
63
ApeX Pro
ATOM-USDC$0.9996
0.0000435 Btc
$573,476.00
42,304.600 ATOM
0.0003%
64
MEXC Global
BCH-USDC$1.00
0.0000435 Btc
$559,079.00
4,182.290 BCH
0.0000%
65
Coinbase Exchange
USDT-USDC$1.00
0.0000435 Btc
$508,647.00
508,516.730 USDT
0.0037%
66
BitMart
USDC-USDT$0.9996
0.0000435 Btc
$494,799.00
494,973.680 USDC
0.0036%
67
MEXC Global
ADA-USDC$1.00
0.0000435 Btc
$410,802.00
1,062,823.750 ADA
0.0077%
68
MEXC Global
EOS-USDC$1.00
0.0000435 Btc
$389,432.00
355,852.570 EOS
0.0026%
69
Bitget
BCH-USDC$1.00
0.0000435 Btc
$389,410.00
2,888.119 BCH
0.0000%
70
Orderly Network
NEAR-USDC$0.9996
0.0000435 Btc
$388,438.00
160,165.930 NEAR
0.0012%
71
Hotbit
USDC-USDT$0.9974
0.0000434 Btc
$388,321.00
389,335.940 USDC
0.0028%
72
MEXC Global
SOL-USDC$1.00
0.0000435 Btc
$356,712.00
14,650.690 SOL
0.0001%
73
MEXC Global
ALGO-USDC$1.00
0.0000435 Btc
$344,476.00
1,345,005.680 ALGO
0.0097%
74
BingX
UNI-USDC$1.00
0.0000435 Btc
$314,948.00
46,398.431 UNI
0.0003%
75
MEXC Global
OP-USDC$1.00
0.0000435 Btc
$284,084.00
129,758.620 OP
0.0009%
76
MEXC Global
XRP-USDC$1.00
0.0000435 Btc
$278,104.00
677,090.130 XRP
0.0049%
77
Coinfield
BTC-USDC$1.00
0.0000435 Btc
$268,994.00
11.683 BTC
0.0000%
78
Coinbase Exchange
USDC-GBP$1.001
0.0000435 Btc
$267,588.00
267,450.350 USDC
0.0019%
79
Phemex
USDC-USDT$0.9996
0.0000435 Btc
$250,227.00
250,327.770 USDC
0.0018%
80
Binance US
USDC-USDT$0.9996
0.0000435 Btc
$245,408.00
245,507.076 USDC
0.0018%
81
Bitstamp
USDC-EUR$1.001
0.0000435 Btc
$245,083.00
244,851.998 USDC
0.0018%
82
Bitget
BNB-USDC$1.00
0.0000435 Btc
$233,455.00
760.400 BNB
0.0000%
83
CoinEx
USDC-USDT$1.001
0.0000435 Btc
$230,326.00
229,936.614 USDC
0.0017%
84
Bitstamp
USDC-USD$1.00
0.0000435 Btc
$230,195.00
230,197.247 USDC
0.0017%
85
Coinbase Exchange
USDC-EUR$1.00
0.0000435 Btc
$227,611.00
227,549.910 USDC
0.0016%
86
MEXC Global
AAVE-USDC$1.00
0.0000435 Btc
$225,021.00
2,584.707 AAVE
0.0000%
87
PancakeSwap (v2)
0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-BUSD$1.002
0.0000436 Btc
$208,499.00
208,423.086 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D
0.0015%
88
Orderly Network
ETH-USDC$0.9996
0.0000435 Btc
$203,317.00
130.333 ETH
0.0000%
89
Bitget
ADA-USDC$1.00
0.0000435 Btc
$187,038.00
485,623.000 ADA
0.0035%
90
BingX
TRX-USDC$1.00
0.0000435 Btc
$183,706.00
2,908,822.199 TRX
0.0210%
91
BitMart
DAI-USDC$1.00
0.0000435 Btc
$167,656.00
167,698.400 DAI
0.0012%
92
MEXC Global
LTC-USDC$1.00
0.0000435 Btc
$156,789.00
1,768.150 LTC
0.0000%
93
MEXC Global
SHIB-USDC$1.00
0.0000435 Btc
$153,984.00
12,836,726,779.000 SHIB
92.5520%
94
Azbit
USDC-USDT$0.9996
0.0000435 Btc
$143,276.00
143,333.793 USDC
0.0010%
95
Bitfinex
UDC-USDT$0.9999
0.0000435 Btc
$112,959.00
112,971.973 UDC
0.0008%
96
KuCoin
BUSD-USDC$0.9996
0.0000435 Btc
$109,291.00
109,358.381 BUSD
0.0008%
97
Bitget
TRX-USDC$1.00
0.0000435 Btc
$99,101.00
1,570,075.400 TRX
0.0113%
98
MEXC Global
WBTC-USDC$1.00
0.0000435 Btc
$94,611.00
4.124 WBTC
0.0000%
99
Bitget
DOGE-USDC$1.00
0.0000435 Btc
$89,593.00
1,020,473.232 DOGE
0.0074%
100
Coinsbit
USDC-USDT$1.00
0.0000435 Btc
$51,185.00
51,169.177 USDC
0.0004%

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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