Token Bridged USDC

 

Overview ERC20

Price
$1.00 @ 0.000631 ETH (-0.04%)
Fully Diluted Market Cap
Total Supply:
658,790,712.362318 USDC.e

Holders:
619,631 addresses
Filtered by Token Holder (SushiSwap: WethMaker)

Balance
4,627.233916 USDC.e

Value
$4,631.86 ( ~2.9220 ETH) [0.0007%]
0xa19b3b22f29e23e4c04678c94cfc3e8f202137d8
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OVERVIEW

This is a bridged USDC token deployed by Arbitrum Foundation.

Market

Volume (24H):$3,946,046,040.00
Market Capitalization:$25,602,337,085.00
Circulating Supply:25,602,487,402.00 USDC.e
Market Data Source: Coinmarketcap


Update? Click here to update the token ICO / general information
# Exchange Pair Price  24H Volume % Volume
1
Binance
USDC-USDT$1.00
0.0000382 Btc
$234,155,763.00
234,204,321.000 USDC
43.3192%
2
Uniswap V3 (Ethereum)
0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$190,772,123.00
120,053.928 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2
0.0222%
3
Bybit
BTC-USDC$1.001
0.0000382 Btc
$172,449,165.00
6,560.324 BTC
0.0012%
4
Biconomy
BTC-USDC$1.001
0.0000382 Btc
$80,630,200.00
3,065.682 BTC
0.0006%
5
Maverick Protocol
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.001
0.0000382 Btc
$72,149,853.00
72,096,422.584 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
13.3352%
6
Bybit
ETH-USDC$1.00
0.0000382 Btc
$69,548,527.00
43,759.322 ETH
0.0081%
7
LBank
ETH-USDC$1.00
0.0000382 Btc
$34,667,000.00
21,856.136 ETH
0.0040%
8
Uniswap V3 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.00
0.0000382 Btc
$34,354,619.00
34,346,178.976 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
6.3528%
9
Uniswap V3 (Ethereum)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$32,614,803.00
32,596,424.451 0X6B175474E89094C44DA98B954EEDEAC495271D0F
6.0291%
10
Biconomy
ETH-USDC$1.001
0.0000382 Btc
$28,759,863.00
18,084.490 ETH
0.0033%
11
Bitrue
BTC-USDC$1.001
0.0000382 Btc
$24,809,849.00
947.101 BTC
0.0002%
12
Bybit
USDC-USDT$1.00
0.0000382 Btc
$24,023,569.00
24,021,491.670 USDC
4.4431%
13
DigiFinex
BTC-USDC$1.00
0.0000382 Btc
$20,919,197.00
798.966 BTC
0.0001%
14
DigiFinex
ETH-USDC$1.00
0.0000382 Btc
$20,550,073.00
12,953.128 ETH
0.0024%
15
Curve (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.00
0.0000382 Btc
$19,769,504.00
19,763,828.401 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
3.6556%
16
LBank
BTC-USDC$1.00
0.0000382 Btc
$17,306,068.00
660.939 BTC
0.0001%
17
Bitrue
ETH-USDC$1.001
0.0000382 Btc
$13,425,422.00
8,457.936 ETH
0.0016%
18
Kraken
USDC-USD$1.00
0.0000382 Btc
$13,232,183.00
13,232,183.148 USDC
2.4475%
19
Kraken
USDC-EUR$0.9992
0.0000382 Btc
$12,676,667.00
12,686,622.453 USDC
2.3466%
20
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$0.9996
0.0000382 Btc
$10,865,324.00
10,892,824.912 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
2.0148%
21
Bitget
USDC-USDT$1.00
0.0000382 Btc
$8,807,488.00
8,806,557.660 USDC
1.6289%
22
Binance
BTC-USDC$1.00
0.0000382 Btc
$8,105,966.00
308.287 BTC
0.0001%
23
OKX
USDC-USDT$1.00
0.0000382 Btc
$7,097,043.00
7,097,810.309 USDC
1.3128%
24
DigiFinex
USDC-USDT$1.00
0.0000382 Btc
$6,966,961.00
6,965,018.050 USDC
1.2883%
25
Bybit
XRP-USDC$1.001
0.0000382 Btc
$5,760,628.00
11,460,905.700 XRP
2.1198%
26
Kraken
USDC-USDT$1.00
0.0000382 Btc
$5,156,435.00
5,155,074.789 USDC
0.9535%
27
XT.COM
ETH-USDC$1.001
0.0000382 Btc
$5,084,255.00
3,197.348 ETH
0.0006%
28
Binance
ETH-USDC$1.001
0.0000383 Btc
$5,047,042.00
3,174.734 ETH
0.0006%
29
XT.COM
BTC-USDC$1.001
0.0000382 Btc
$4,989,985.00
189.675 BTC
0.0000%
30
BingX
ETH-USDC$1.00
0.0000382 Btc
$4,882,544.00
3,071.551 ETH
0.0006%
31
OKX
BTC-USDC$1.00
0.0000382 Btc
$4,191,016.00
159.534 BTC
0.0000%
32
OKX
ETH-USDC$1.001
0.0000382 Btc
$4,019,743.00
2,528.713 ETH
0.0005%
33
Uniswap V3 (Ethereum)
0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$3,946,105.00
3,942,113.036 0X6B175474E89094C44DA98B954EEDEAC495271D0F
0.7291%
34
MEXC
USDC-USDT$1.00
0.0000382 Btc
$3,806,333.00
3,805,096.600 USDC
0.7038%
35
HTX
USDC-USDT$1.00
0.0000382 Btc
$3,484,550.00
3,485,367.565 USDC
0.6447%
36
Curve (Ethereum)
0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$2,871,230.00
2,872,905.431 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E
0.5314%
37
Coinbase Exchange
USDC-EUR$0.9993
0.0000382 Btc
$2,520,751.00
2,522,480.990 USDC
0.4666%
38
Bitrue
USDC-USDT$1.00
0.0000382 Btc
$2,355,570.00
2,354,804.610 USDC
0.4356%
39
Uniswap V3 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.00
0.0000382 Btc
$2,046,918.00
2,055,152.937 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.3801%
40
Curve (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.00
0.0000382 Btc
$2,034,957.00
2,037,662.421 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.3769%
41
Gemini
USDC-USD$1.00
0.0000382 Btc
$1,724,956.00
1,724,817.886 USDC
0.3190%
42
LATOKEN
USDC-USDT$1.00
0.0000382 Btc
$1,707,225.00
1,706,807.059 USDC
0.3157%
43
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.001
0.0000382 Btc
$1,554,067.00
59.173 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
44
Kraken
USDC-GBP$1.00
0.0000382 Btc
$1,462,273.00
1,462,148.924 USDC
0.2704%
45
OKX
USDT-USDC$1.001
0.0000382 Btc
$1,365,251.00
1,364,595.755 USDT
0.2524%
46
Cryptology
BTC-USDC$1.00
0.0000382 Btc
$1,296,489.00
49.489 BTC
0.0000%
47
Phemex
USDC-USDT$1.00
0.0000382 Btc
$1,271,296.00
1,271,009.940 USDC
0.2351%
48
Curve (Ethereum)
0X853D955ACEF822DB058EB8505911ED77F175B99E-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$1,089,817.00
1,091,568.419 0X853D955ACEF822DB058EB8505911ED77F175B99E
0.2019%
49
Curve (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$1.002
0.0000383 Btc
$1,055,124.00
1,058,837.997 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1958%
50
KuCoin
USDT-USDC$1.001
0.0000382 Btc
$1,009,365.00
1,009,464.799 USDT
0.1867%
51
Toobit
USDC-USDT$1.00
0.0000382 Btc
$955,487.00
955,577.000 USDC
0.1767%
52
Uniswap V2 (Ethereum)
0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0000382 Btc
$954,913.00
600.952 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2
0.0001%
53
KuCoin
XRP-USDC$1.001
0.0000382 Btc
$902,647.00
1,796,627.696 XRP
0.3323%
54
Kraken
BTC-USDC$1.001
0.0000382 Btc
$894,661.00
34.151 BTC
0.0000%
55
KuCoin
USDC-USDT$1.00
0.0000382 Btc
$871,082.00
871,073.858 USDC
0.1611%
56
Coinsbit
BTC-USDC$1.00
0.0000382 Btc
$762,369.00
29.114 BTC
0.0000%
57
Bitstamp
USDC-EUR$0.9994
0.0000382 Btc
$734,385.00
734,829.764 USDC
0.1359%
58
KuCoin
BTC-USDC$1.001
0.0000382 Btc
$691,278.00
26.386 BTC
0.0000%
59
Bitget
BGB-USDC$1.001
0.0000382 Btc
$587,521.00
1,310,499.563 BGB
0.2424%
60
Kraken
ETH-USDC$1.00
0.0000382 Btc
$557,904.00
351.998 ETH
0.0001%
61
Coinsbit
ETH-USDC$1.00
0.0000382 Btc
$552,826.00
348.574 ETH
0.0001%
62
BitMart
BTC-USDC$1.00
0.0000382 Btc
$550,184.00
21.022 BTC
0.0000%
63
P2B
USDC-USDT$1.00
0.0000382 Btc
$527,617.00
527,553.700 USDC
0.0976%
64
BitMart
USDC-USDT$1.00
0.0000382 Btc
$527,589.00
527,476.240 USDC
0.0976%
65
Bitget
BTC-USDC$1.001
0.0000382 Btc
$508,514.00
19.335 BTC
0.0000%
66
Bitget
ETH-USDC$1.001
0.0000382 Btc
$474,700.00
298.527 ETH
0.0001%
67
Gate.io
USDC-USDT$1.00
0.0000382 Btc
$471,455.00
471,530.045 USDC
0.0872%
68
PearlFi V1.5
0X40379A439D4F6795B6FC9AA5687DB461677A2DBA-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$1.001
0.0000383 Btc
$440,949.00
440,498.053 0X40379A439D4F6795B6FC9AA5687DB461677A2DBA
0.0815%
69
BitMart
DAI-USDC$1.00
0.0000382 Btc
$431,349.00
431,309.800 DAI
0.0798%
70
KuCoin
ETH-USDC$1.001
0.0000382 Btc
$411,661.00
259.513 ETH
0.0000%
71
BitMart
ETH-USDC$1.00
0.0000382 Btc
$317,073.00
199.946 ETH
0.0000%
72
Bitstamp
USDC-USD$1.00
0.0000382 Btc
$314,148.00
314,135.493 USDC
0.0581%
73
MEXC
BTC-USDC$1.001
0.0000382 Btc
$274,328.00
10.471 BTC
0.0000%
74
MEXC
ETH-USDC$1.001
0.0000382 Btc
$265,558.00
167.307 ETH
0.0000%
75
BitMart
OP-USDC$1.00
0.0000382 Btc
$247,211.00
194,385.000 OP
0.0360%
76
WhiteBIT
ETH-USDC$1.001
0.0000382 Btc
$175,438.00
110.341 ETH
0.0000%
77
QMall
BTC-USDC$1.001
0.0000382 Btc
$166,986.00
6.354 BTC
0.0000%
78
BitMart
APE-USDC$1.00
0.0000382 Btc
$164,795.00
147,243.600 APE
0.0272%
79
Kraken
USDC-AUD$0.9994
0.0000382 Btc
$157,042.00
157,130.167 USDC
0.0291%
80
C-Patex
USDC-USDT$1.00
0.0000382 Btc
$128,559.00
128,524.978 USDC
0.0238%
81
BitMart
LTC-USDC$1.00
0.0000382 Btc
$121,489.00
1,894.658 LTC
0.0004%
82
BitMart
FXS-USDC$1.001
0.0000382 Btc
$116,223.00
20,060.800 FXS
0.0037%
83
Bitfinex
UDC-USDT$1.00
0.0000382 Btc
$115,005.00
114,967.421 UDC
0.0213%
84
Bitstamp
BTC-USDC$1.001
0.0000382 Btc
$101,343.00
3.872 BTC
0.0000%
85
Bitvavo
USDC-EUR$0.9987
0.0000381 Btc
$86,122.00
86,235.749 USDC
0.0160%
86
BitMart
TRX-USDC$1.00
0.0000382 Btc
$84,696.00
1,001,118.000 TRX
0.1852%
87
Bitget
XRP-USDC$1.001
0.0000382 Btc
$73,507.00
146,193.000 XRP
0.0270%
88
Bitget
TRX-USDC$1.001
0.0000382 Btc
$73,398.00
867,451.200 TRX
0.1604%
89
BitMart
XLM-USDC$1.00
0.0000382 Btc
$71,550.00
642,752.200 XLM
0.1189%
90
Bitget
ADA-USDC$1.001
0.0000382 Btc
$65,332.00
265,546.000 ADA
0.0491%
91
Bitget
APE-USDC$1.001
0.0000382 Btc
$64,656.00
57,484.700 APE
0.0106%
92
Bitget
BNB-USDC$1.001
0.0000382 Btc
$60,934.00
288.647 BNB
0.0001%
93
Bitget
MATIC-USDC$1.001
0.0000382 Btc
$58,520.00
112,525.400 MATIC
0.0208%
94
Bitget
NEAR-USDC$1.001
0.0000382 Btc
$50,900.00
46,272.100 NEAR
0.0086%
95
Bitget
DOGE-USDC$1.001
0.0000382 Btc
$50,432.00
827,359.711 DOGE
0.1530%
96
Bitget
AVAX-USDC$1.001
0.0000382 Btc
$46,148.00
5,144.200 AVAX
0.0010%
97
Bitget
AAVE-USDC$1.001
0.0000382 Btc
$37,649.00
607.625 AAVE
0.0001%
98
MEXC
MATIC-USDC$1.00
0.0000382 Btc
$33,321.00
64,349.030 MATIC
0.0119%
99
Coinsbit
USDC-USDT$1.00
0.0000382 Btc
$28,625.00
28,613.528 USDC
0.0053%
100
MEXC
FIL-USDC$1.00
0.0000382 Btc
$26,165.00
8,163.176 FIL
0.0015%

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 Arbiscan.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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