Token USD Coin (Arb1)

 

Overview ERC20

Price
$1.00 @ 0.000790 ETH (-0.01%)
Fully Diluted Market Cap
Total Supply:
625,997,779.704513 USDC

Holders:
250,984 addresses
Balance
1,406.38285 USDC

Value
$1,406.38 ( ~1.1117 ETH) [0.0002%]
0xe2efa7c8a0769e91af174870dbddc2d2500c08a3
Loading
[ Download CSV Export  ] 
Loading
[ Download CSV Export  ] 
Loading

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):$1,634,990,358.00
Market Capitalization:$42,728,681,385.00
Circulating Supply:42,712,367,355.00 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$1.004
0.0000586 Btc
$183,592,705.00
183,818,748.162 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
27.2363%
2
LBank
ETH-USDC$0.9998
0.0000583 Btc
$121,654,357.00
96,194.061 ETH
0.0143%
3
Bitforex
USDC-USDT$1.00
0.0000583 Btc
$94,425,450.00
94,420,406.998 USDC
13.9902%
4
WhiteBIT
USDC-USDT$1.00
0.0000583 Btc
$80,480,338.00
80,468,019.259 USDC
11.9229%
5
Bitforex
BTC-USDC$1.00
0.0000583 Btc
$73,492,839.00
4,287.533 BTC
0.0006%
6
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.004
0.0000586 Btc
$69,361,480.00
69,061,301.015 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
10.2328%
7
LBank
BTC-USDC$0.9998
0.0000583 Btc
$69,045,105.00
4,028.937 BTC
0.0006%
8
MEXC Global
ETH-USDC$1.00
0.0000583 Btc
$59,055,870.00
46,687.288 ETH
0.0069%
9
MEXC Global
BTC-USDC$1.00
0.0000583 Btc
$58,503,532.00
3,413.780 BTC
0.0005%
10
BitMart
BTC-USDC$1.00
0.0000583 Btc
$55,981,907.00
3,267.162 BTC
0.0005%
11
Kraken
USDC-EUR$1.00
0.0000583 Btc
$24,817,381.00
24,815,601.716 USDC
3.6769%
12
Kraken
USDC-USD$0.9999
0.0000583 Btc
$24,767,947.00
24,770,423.806 USDC
3.6702%
13
Uniswap (Arbitrum One)
0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8$1.00
0.0000584 Btc
$22,606,393.00
17,758.549 0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1
0.0026%
14
Huobi
USDC-USDT$0.9996
0.0000583 Btc
$19,370,787.00
19,378,643.561 USDC
2.8713%
15
Hotbit
USDC-USDT$0.9991
0.0000583 Btc
$19,158,621.00
19,176,036.300 USDC
2.8413%
16
Kraken
USDC-USDT$1.00
0.0000583 Btc
$16,118,841.00
16,116,386.484 USDC
2.3880%
17
BingX
BTC-USDC$1.00
0.0000583 Btc
$14,749,877.00
859.435 BTC
0.0001%
18
BitMart
ETH-USDC$1.00
0.0000583 Btc
$13,774,197.00
10,922.766 ETH
0.0016%
19
Uniswap (v3)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.004
0.0000586 Btc
$12,085,049.00
12,169,192.236 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
1.8031%
20
BKEX
ETH-USDC$1.00
0.0000583 Btc
$11,891,346.00
9,355.185 ETH
0.0014%
21
DigiFinex
USDC-USDT$1.00
0.0000584 Btc
$11,785,877.00
11,784,824.410 USDC
1.7461%
22
OKX
USDC-USDT$1.00
0.0000583 Btc
$8,469,030.00
8,468,027.772 USDC
1.2547%
23
WhiteBIT
BTC-USDC$1.00
0.0000583 Btc
$8,444,544.00
492.778 BTC
0.0001%
24
OKX
ETH-USDC$0.9997
0.0000583 Btc
$8,418,654.00
6,620.838 ETH
0.0010%
25
Bybit
USDC-USDT$1.00
0.0000584 Btc
$7,288,663.00
7,286,818.690 USDC
1.0797%
26
DigiFinex
ETH-USDC$0.9998
0.0000583 Btc
$6,688,820.00
5,289.920 ETH
0.0008%
27
Bybit
BTC-USDC$1.00
0.0000583 Btc
$6,426,100.00
375.102 BTC
0.0001%
28
BKEX
USDC-USDT$1.00
0.0000583 Btc
$6,409,538.00
6,408,882.652 USDC
0.9496%
29
BKEX
BTC-USDC$1.00
0.0000583 Btc
$6,249,488.00
363.875 BTC
0.0001%
30
Bybit
ETH-USDC$1.00
0.0000583 Btc
$6,036,683.00
4,774.597 ETH
0.0007%
31
KuCoin
USDC-USDT$1.001
0.0000584 Btc
$4,065,189.00
4,063,021.002 USDC
0.6020%
32
BingX
ETH-USDC$1.00
0.0000583 Btc
$3,814,194.00
2,998.721 ETH
0.0004%
33
XT.COM
USDC-USDT$1.00
0.0000583 Btc
$3,643,752.00
3,643,048.450 USDC
0.5398%
34
MEXC Global
DOGE-USDC$1.00
0.0000583 Btc
$3,593,434.00
37,241,452.290 DOGE
5.5180%
35
LBank
USDC-USDT$0.9998
0.0000583 Btc
$3,515,507.00
3,516,247.801 USDC
0.5210%
36
Gemini
USDC-USD$1.00
0.0000584 Btc
$3,299,510.00
3,298,916.192 USDC
0.4888%
37
Uniswap (v3)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.004
0.0000586 Btc
$3,246,290.00
3,232,422.446 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.4789%
38
OKX
BTC-USDC$0.9997
0.0000583 Btc
$2,911,079.00
169.542 BTC
0.0000%
39
KuCoin
USDT-USDC$1.00
0.0000583 Btc
$2,759,585.00
2,760,128.892 USDT
0.4090%
40
KuCoin
BTC-USDC$1.00
0.0000583 Btc
$2,703,306.00
157.702 BTC
0.0000%
41
DigiFinex
BTC-USDC$0.9998
0.0000583 Btc
$2,602,890.00
151.953 BTC
0.0000%
42
KuCoin
ETH-USDC$1.00
0.0000583 Btc
$2,327,064.00
1,839.586 ETH
0.0003%
43
ZigZag (Arbitrum)
WETH-USDC$1.00
0.0000583 Btc
$2,295,343.00
1,807.040 WETH
0.0003%
44
Uniswap (v2)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.001
0.0000584 Btc
$2,157,558.00
2,169,481.868 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.3215%
45
Bitget
BTC-USDC$1.00
0.0000583 Btc
$2,140,525.00
124.747 BTC
0.0000%
46
Binance US
USDC-USD$0.9999
0.0000583 Btc
$1,997,695.00
1,997,894.528 USDC
0.2960%
47
Sushiswap (Arbitrum One)
0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.006
0.0000587 Btc
$1,751,982.00
1,760,088.241 0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8
0.2608%
48
MEXC Global
EOS-USDC$1.00
0.0000583 Btc
$1,581,186.00
1,516,430.110 EOS
0.2247%
49
Bitstamp
USDC-EUR$1.00
0.0000584 Btc
$1,523,847.00
1,523,143.894 USDC
0.2257%
50
Bitstamp
USDC-USD$1.001
0.0000584 Btc
$1,446,620.00
1,445,275.849 USDC
0.2141%
51
Huobi
BTC-USDC$0.9997
0.0000583 Btc
$1,384,346.00
80.730 BTC
0.0000%
52
Kraken
USDC-GBP$0.9993
0.0000583 Btc
$1,345,631.00
1,346,556.904 USDC
0.1995%
53
WhiteBIT
ETH-USDC$1.00
0.0000583 Btc
$1,254,727.00
991.759 ETH
0.0001%
54
Sushiswap
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$0.9978
0.0000582 Btc
$1,087,322.00
1,093,044.553 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1620%
55
BingX
USDC-USDT$0.9999
0.0000583 Btc
$1,043,155.00
1,043,155.989 USDC
0.1546%
56
Kraken
BTC-USDC$1.00
0.0000583 Btc
$1,007,192.00
58.749 BTC
0.0000%
57
Bitget
USDC-USDT$1.00
0.0000583 Btc
$940,990.00
940,820.772 USDC
0.1394%
58
Kraken
ETH-USDC$1.00
0.0000583 Btc
$905,450.00
715.781 ETH
0.0001%
59
Bitget
ETH-USDC$1.00
0.0000583 Btc
$819,255.00
644.989 ETH
0.0001%
60
Bitfinex
UDC-USD$1.00
0.0000584 Btc
$678,692.00
678,556.612 UDC
0.1005%
61
MEXC Global
BCH-USDC$1.00
0.0000583 Btc
$647,975.00
5,924.060 BCH
0.0009%
62
Canto Dex
0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503-0X80B5A32E4F032B2A058B4F29EC95EEFEEB87ADCD$1.00
0.0000583 Btc
$642,076.00
634,592.977 0X4E71A2E537B7F9D9413D3991D37958C0B5E1E503
0.0940%
63
Bitget
XRP-USDC$1.00
0.0000583 Btc
$627,539.00
1,615,487.000 XRP
0.2394%
64
Coinbase Exchange
USDT-USDC$0.9999
0.0000583 Btc
$530,481.00
530,475.480 USDT
0.0786%
65
Binance US
BTC-USDC$1.00
0.0000583 Btc
$526,622.00
30.720 BTC
0.0000%
66
Bibox
USDC-USDT$1.00
0.0000584 Btc
$431,672.00
431,520.000 USDC
0.0639%
67
BitMart
USDC-USDT$1.00
0.0000584 Btc
$428,789.00
428,697.640 USDC
0.0635%
68
MEXC Global
TRX-USDC$1.00
0.0000583 Btc
$405,297.00
7,392,539.810 TRX
1.0953%
69
PancakeSwap (v2)
0X2170ED0880AC9A755FD29B2688956BD959F933F8-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$1.002
0.0000585 Btc
$393,659.00
308.090 0X2170ED0880AC9A755FD29B2688956BD959F933F8
0.0000%
70
Bitfinex
UDC-USDT$1.00
0.0000584 Btc
$384,310.00
384,135.577 UDC
0.0569%
71
BitMart
DOGE-USDC$1.00
0.0000583 Btc
$360,131.00
3,725,160.000 DOGE
0.5520%
72
Bitget
BCH-USDC$1.00
0.0000583 Btc
$327,917.00
2,973.777 BCH
0.0004%
73
Tidex
BTC-USDC$1.00
0.0000583 Btc
$315,208.00
18.387 BTC
0.0000%
74
BKEX
MATIC-USDC$1.00
0.0000583 Btc
$311,068.00
340,556.041 MATIC
0.0505%
75
KuCoin
BUSD-USDC$1.00
0.0000583 Btc
$300,224.00
300,583.853 BUSD
0.0445%
76
BKEX
ATOM-USDC$1.00
0.0000583 Btc
$271,653.00
27,941.482 ATOM
0.0041%
77
BitMart
ADA-USDC$1.00
0.0000583 Btc
$269,044.00
862,110.000 ADA
0.1277%
78
Phemex
USDC-USDT$1.00
0.0000583 Btc
$247,296.00
247,257.690 USDC
0.0366%
79
Bitvavo
USDC-EUR$0.9997
0.0000583 Btc
$246,978.00
247,048.619 USDC
0.0366%
80
BKEX
SOL-USDC$1.00
0.0000583 Btc
$246,118.00
17,981.884 SOL
0.0027%
81
Okcoin
USDC-USDT$1.00
0.0000583 Btc
$210,150.00
210,118.028 USDC
0.0311%
82
Coinfield
BTC-USDC$1.00
0.0000583 Btc
$206,889.00
12.074 BTC
0.0000%
83
Bitget
BNB-USDC$1.00
0.0000583 Btc
$201,778.00
701.329 BNB
0.0001%
84
Velodrome Finance
0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$1.00
0.0000583 Btc
$196,466.00
195,306.186 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9
0.0289%
85
Bitget
MATIC-USDC$1.00
0.0000583 Btc
$190,949.00
209,196.200 MATIC
0.0310%
86
Bitget
ADA-USDC$1.00
0.0000583 Btc
$189,903.00
608,726.000 ADA
0.0902%
87
BitMart
BUSD-USDC$1.00
0.0000583 Btc
$159,341.00
159,341.000 BUSD
0.0236%
88
Coinbase Exchange
USDC-EUR$1.00
0.0000584 Btc
$154,591.00
154,563.340 USDC
0.0229%
89
MEXC Global
KLAY-USDC$1.00
0.0000583 Btc
$147,020.00
792,773.780 KLAY
0.1175%
90
CoinEx
USDC-USDT$1.00
0.0000584 Btc
$142,130.00
142,076.296 USDC
0.0211%
91
Bitget
TRX-USDC$1.00
0.0000583 Btc
$121,703.00
2,219,474.500 TRX
0.3289%
92
Bitget
AVAX-USDC$1.00
0.0000583 Btc
$118,411.00
8,808.200 AVAX
0.0013%
93
Bitstamp
BTC-USDC$1.00
0.0000583 Btc
$112,926.00
6.583 BTC
0.0000%
94
BitMart
DAI-USDC$1.00
0.0000583 Btc
$97,765.00
97,757.600 DAI
0.0145%
95
Bitget
DOGE-USDC$1.00
0.0000583 Btc
$90,504.00
933,508.885 DOGE
0.1383%
96
Bitget
EOS-USDC$1.00
0.0000583 Btc
$86,837.00
83,583.700 EOS
0.0124%
97
MEXC Global
OP-USDC$1.00
0.0000583 Btc
$82,573.00
77,957.910 OP
0.0116%
98
CoinJar Exchange
USDC-AUD$1.001
0.0000584 Btc
$76,118.00
76,078.968 USDC
0.0113%
99
PancakeSwap (v2)
0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D-USDT$1.002
0.0000585 Btc
$65,905.00
65,875.866 0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D
0.0098%
100
Coinbase Exchange
USDC-GBP$0.9988
0.0000583 Btc
$35,273.00
35,314.250 USDC
0.0052%

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---------------


Loading