ETH Price: $3,347.82 (+0.38%)
 

Overview

Max Total Supply

31,119,172,181.096937 USDC

Holders

2,519,388 ( -0.001%)

Market

Price

$1.00 @ 0.000299 ETH (-0.04%)

Onchain Market Cap

$31,116,309,217.26

Circulating Supply Market Cap

$43,949,129,966.00

Other Info

Token Contract (WITH 6 Decimals)

Balance
0 USDC

Value
$0.00
0xd7b5c871f423725e60fb5a52e121eb7d3135ce60
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OVERVIEW

USDC is a US dollar-backed stablecoin issued by Circle. USDC is designed to provide a faster, safer, and more efficient way to send, spend, and exchange money around the world.

Market

Volume (24H):$8,215,378,795.00
Market Capitalization:$43,949,129,966.00
Circulating Supply:43,947,580,873.00 USDC
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Azbit
BTC-USDC$0.9998
0.0002987 Eth
$398,937,655.00
4,236.743 BTC
0.0000%
2
Curve (Ethereum)
0X73A15FED60BF67631DC6CD7BC5B6E8DA8190ACF5-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9998
0.0002987 Eth
$297,036,397.00
297,760,850.432 0X73A15FED60BF67631DC6CD7BC5B6E8DA8190ACF5
0.0159%
3
Binance
BTC-USDC$1.00
0.0002990 Eth
$279,582,955.00
2,968.328 BTC
0.0000%
4
Bybit
USDC-USDT$1.00
0.0002990 Eth
$216,241,312.00
216,341,599.300 USDC
0.0115%
5
Orca
SO11111111111111111111111111111111111111112-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$0.9998
0.0002987 Eth
$200,391,544.00
1,035,767.228 SO11111111111111111111111111111111111111112
0.0001%
6
Bybit
BTC-USDC$1.00
0.0002990 Eth
$157,266,769.00
1,670.470 BTC
0.0000%
7
DigiFinex
BTC-USDC$0.9996
0.0002989 Eth
$78,446,492.00
838.284 BTC
0.0000%
8
OKX
BTC-USDC$1.00
0.0002990 Eth
$74,029,534.00
786.243 BTC
0.0000%
9
Binance
SOL-USDC$1.00
0.0002990 Eth
$56,050,131.00
289,986.774 SOL
0.0000%
10
Binance
XRP-USDC$1.00
0.0002987 Eth
$49,967,627.00
23,923,740.000 XRP
0.0013%
11
Bybit
ETH-USDC$1.00
0.0002990 Eth
$45,782,647.00
13,589.109 ETH
0.0000%
12
OKX
ETH-USDC$1.00
0.0002990 Eth
$39,541,435.00
11,698.981 ETH
0.0000%
13
Binance
PEPE-USDC$1.00
0.0002990 Eth
$35,273,151.00
1,753,081,404,757.000 PEPE
93.4707%
14
LFJ V2.2 (Avalanche)
0X9702230A8EA53601F5CD2DC00FDBC13D4DF4A8C7-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E$1.00
0.0002987 Eth
$32,271,395.00
32,321,145.765 0X9702230A8EA53601F5CD2DC00FDBC13D4DF4A8C7
0.0017%
15
Orca
27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$0.9998
0.0002987 Eth
$31,137,249.00
7,411,079.564 27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4
0.0004%
16
LBank
BTC-USDC$1.00
0.0002990 Eth
$31,016,240.00
331.326 BTC
0.0000%
17
DigiFinex
ETH-USDC$0.9996
0.0002989 Eth
$29,222,709.00
8,728.777 ETH
0.0000%
18
Meteora
27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002990 Eth
$28,246,135.00
6,715,870.398 27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4
0.0004%
19
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0002991 Eth
$27,824,319.00
293.932 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
20
Meteora
SO11111111111111111111111111111111111111112-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002987 Eth
$27,162,857.00
140,760.589 SO11111111111111111111111111111111111111112
0.0000%
21
Uniswap V3 (Base)
0X4F9FD6BE4A90F2620860D680C0D4D5FB53D1A825-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$0.9986
0.0002987 Eth
$25,706,966.00
43,132,154.599 0X4F9FD6BE4A90F2620860D680C0D4D5FB53D1A825
0.0023%
22
Orca
SO11111111111111111111111111111111111111112-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$0.9998
0.0002987 Eth
$21,365,918.00
110,555.092 SO11111111111111111111111111111111111111112
0.0000%
23
Meteora
2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002987 Eth
$19,792,659.00
609,421,234.050 2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV
0.0325%
24
Binance
DOGE-USDC$0.9998
0.0002987 Eth
$19,226,664.00
60,154,937.000 DOGE
0.0032%
25
LBank
ETH-USDC$1.00
0.0002990 Eth
$18,176,710.00
5,428.005 ETH
0.0000%
26
Bybit
SOL-USDC$1.00
0.0002990 Eth
$17,115,996.00
88,537.916 SOL
0.0000%
27
Binance
FDUSD-USDC$1.00
0.0002987 Eth
$16,004,296.00
16,036,414.000 FDUSD
0.0009%
28
Binance
ADA-USDC$1.00
0.0002987 Eth
$14,700,387.00
17,156,972.700 ADA
0.0009%
29
Meteora
SO11111111111111111111111111111111111111112-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002987 Eth
$13,804,971.00
71,602.381 SO11111111111111111111111111111111111111112
0.0000%
30
Camelot V3
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8$1.001
0.0002989 Eth
$13,700,832.00
13,689,481.073 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0007%
31
WhiteBIT
ETH-USDC$0.9998
0.0002987 Eth
$13,116,609.00
3,920.953 ETH
0.0000%
32
LFJ V2.1 (Avalanche)
0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E$1.00
0.0002986 Eth
$12,843,266.00
356,577.901 0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7
0.0000%
33
Curve (Ethereum)
0X4C9EDD5852CD905F086C759E8383E09BFF1E68B3-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0002989 Eth
$11,912,034.00
11,939,226.907 0X4C9EDD5852CD905F086C759E8383E09BFF1E68B3
0.0006%
34
Curve (Ethereum)
0X6C3EA9036406852006290770BEDFCABA0E23A0E8-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9984
0.0002986 Eth
$10,749,258.00
10,777,764.227 0X6C3EA9036406852006290770BEDFCABA0E23A0E8
0.0006%
35
Orca
2B1KV6DKPANXD5IXFNXCPJXMKWQJJAYMCZFHSFU24GXO-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$0.9998
0.0002987 Eth
$10,647,180.00
10,652,392.488 2B1KV6DKPANXD5IXFNXCPJXMKWQJJAYMCZFHSFU24GXO
0.0006%
36
Azbit
ETH-USDC$1.00
0.0002987 Eth
$10,541,159.00
3,122.160 ETH
0.0000%
37
Kraken
BTC-USDC$0.9995
0.0002989 Eth
$10,283,533.00
109.919 BTC
0.0000%
38
Bybit
XRP-USDC$1.00
0.0002990 Eth
$10,006,589.00
4,793,376.000 XRP
0.0003%
39
WhiteBIT
BTC-USDC$1.00
0.0002987 Eth
$8,647,567.00
92.377 BTC
0.0000%
40
OKX
USDT-USDC$1.00
0.0002990 Eth
$7,058,879.00
7,070,730.494 USDT
0.0004%
41
Bitget
BTC-USDC$1.00
0.0002990 Eth
$7,017,710.00
74.638 BTC
0.0000%
42
Binance
PENGU-USDC$1.00
0.0002987 Eth
$7,003,733.00
214,924,343.000 PENGU
0.0115%
43
Dex-Trade
BTC-USDC$0.9998
0.0002987 Eth
$6,018,634.00
64.353 BTC
0.0000%
44
Azbit
SOL-USDC$0.9998
0.0002987 Eth
$5,943,273.00
30,771.471 SOL
0.0000%
45
Binance
LINK-USDC$0.9998
0.0002987 Eth
$5,844,952.00
287,595.330 LINK
0.0000%
46
OKX
XRP-USDC$1.00
0.0002990 Eth
$5,261,221.00
2,515,312.899 XRP
0.0001%
47
Slex
ETH-USDC$0.9998
0.0002987 Eth
$5,244,209.00
1,554.084 ETH
0.0000%
48
QMall
BTC-USDC$1.00
0.0002986 Eth
$5,080,821.00
53.926 BTC
0.0000%
49
Azbit
XRP-USDC$0.9998
0.0002987 Eth
$4,990,334.00
2,390,147.847 XRP
0.0001%
50
Bybit
SUI-USDC$1.00
0.0002990 Eth
$4,751,016.00
1,126,733.850 SUI
0.0001%
51
Deribit Spot
ETH-USDC$1.00
0.0002987 Eth
$4,425,078.00
1,313.121 ETH
0.0000%
52
Bitstamp
USDC-USD$1.00
0.0002990 Eth
$3,992,265.00
3,992,305.007 USDC
0.0002%
53
QMall
ETH-USDC$1.00
0.0002990 Eth
$3,820,587.00
1,131.894 ETH
0.0000%
54
Azbit
LTC-USDC$1.00
0.0002987 Eth
$3,712,700.00
36,465.655 LTC
0.0000%
55
OKX
SOL-USDC$1.00
0.0002990 Eth
$3,559,683.00
18,433.863 SOL
0.0000%
56
Dex-Trade
ETH-USDC$0.9998
0.0002988 Eth
$3,554,114.00
1,062.312 ETH
0.0000%
57
BingX
DOGE-USDC$1.00
0.0002990 Eth
$3,421,685.00
10,723,295.000 DOGE
0.0006%
58
Binance
ALGO-USDC$1.00
0.0002987 Eth
$3,336,361.00
9,832,029.000 ALGO
0.0005%
59
Deribit Spot
XRP-USDC$1.00
0.0002988 Eth
$2,744,112.00
1,333,716.000 XRP
0.0001%
60
Binance
WIF-USDC$1.00
0.0002987 Eth
$2,716,465.00
1,452,893.020 WIF
0.0001%
61
BYDFi
ETH-USDC$1.00
0.0002986 Eth
$2,390,883.00
713.946 ETH
0.0000%
62
Binance
FTM-USDC$1.00
0.0002988 Eth
$2,380,477.00
3,393,152.000 FTM
0.0002%
63
Binance
OP-USDC$1.00
0.0002987 Eth
$2,307,709.00
1,284,251.770 OP
0.0001%
64
Binance
ENA-USDC$1.00
0.0002987 Eth
$2,124,010.00
2,280,469.480 ENA
0.0001%
65
Backpack Exchange
SOL-USDC$1.00
0.0002988 Eth
$2,054,390.00
10,569.900 SOL
0.0000%
66
KuCoin
XRP-USDC$0.999
0.0002988 Eth
$2,025,090.00
963,787.435 XRP
0.0001%
67
Binance
DOT-USDC$0.9998
0.0002988 Eth
$1,958,591.00
290,848.640 DOT
0.0000%
68
LBank
FIL-USDC$1.00
0.0002990 Eth
$1,954,874.00
394,618.040 FIL
0.0000%
69
BYDFi
XRP-USDC$1.00
0.0002987 Eth
$1,949,363.00
928,815.000 XRP
0.0000%
70
tanX
BTC-USDC$0.9998
0.0002987 Eth
$1,812,490.00
19.348 BTC
0.0000%
71
Binance
RUNE-USDC$0.9998
0.0002988 Eth
$1,727,331.00
378,843.800 RUNE
0.0000%
72
OKX
PEPE-USDC$1.00
0.0002990 Eth
$1,724,233.00
83,677,177,974.000 PEPE
4.4615%
73
PointPay
ETH-USDC$1.00
0.0002987 Eth
$1,719,598.00
509.209 ETH
0.0000%
74
Azbit
ADA-USDC$1.00
0.0002987 Eth
$1,462,252.00
1,706,201.370 ADA
0.0001%
75
Binance
GALA-USDC$0.9998
0.0002987 Eth
$1,432,886.00
41,103,183.000 GALA
0.0022%
76
Bybit
DOGE-USDC$1.00
0.0002990 Eth
$1,390,168.00
4,344,183.000 DOGE
0.0002%
77
OKX
DOGE-USDC$1.00
0.0002990 Eth
$1,299,765.00
4,086,700.450 DOGE
0.0002%
78
Vertex (Spot)
WBTC-USDC$0.9998
0.0002987 Eth
$1,191,587.00
12.656 WBTC
0.0000%
79
Bybit
ADA-USDC$1.00
0.0002990 Eth
$885,135.00
1,036,813.390 ADA
0.0001%
80
WhiteBIT
ADA-USDC$1.00
0.0002987 Eth
$876,591.00
1,029,718.500 ADA
0.0001%
81
Dex-Trade
SOL-USDC$0.9998
0.0002987 Eth
$872,459.00
4,600.584 SOL
0.0000%
82
DeGate
0X57E114B691DB790C35207B2E685D4A43181E6061-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$857,348.00
922,393.750 0X57E114B691DB790C35207B2E685D4A43181E6061
0.0000%
83
Bybit
SHIB-USDC$1.00
0.0002990 Eth
$789,095.00
37,064,273,391.500 SHIB
1.9762%
84
DeGate
0X4D1C297D39C5C1277964D0E3F8AA901493664530-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9975
0.0002980 Eth
$683,119.00
883,667.520 0X4D1C297D39C5C1277964D0E3F8AA901493664530
0.0000%
85
PointPay
SOL-USDC$1.00
0.0002990 Eth
$611,784.00
3,163.582 SOL
0.0000%
86
WhiteBIT
ARB-USDC$1.00
0.0002990 Eth
$574,324.00
795,158.580 ARB
0.0000%
87
DeGate
0XC4441C2BE5D8FA8126822B9929CA0B81EA0DE38E-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9975
0.0002980 Eth
$565,511.00
619,032.907 0XC4441C2BE5D8FA8126822B9929CA0B81EA0DE38E
0.0000%
88
DeGate
0X44108F0223A3C3028F5FE7AEC7F9BB2E66BEF82F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9975
0.0002980 Eth
$497,497.00
863,798.450 0X44108F0223A3C3028F5FE7AEC7F9BB2E66BEF82F
0.0000%
89
OKX
TON-USDC$1.00
0.0002990 Eth
$494,721.00
88,105.634 TON
0.0000%
90
BingX
UNI-USDC$1.00
0.0002990 Eth
$494,613.00
36,751.811 UNI
0.0000%
91
DeGate
0X7A58C0BE72BE218B41C608B7FE7C5BB630736C71-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$369,735.00
8,185,001.000 0X7A58C0BE72BE218B41C608B7FE7C5BB630736C71
0.0004%
92
DeGate
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$357,090.00
391,685.675 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0000%
93
DeGate
0XB50721BCF8D664C30412CFBC6CF7A15145234AD1-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$353,223.00
482,716.220 0XB50721BCF8D664C30412CFBC6CF7A15145234AD1
0.0000%
94
DeGate
0X1C88D38D04ACD3EDD9051EC587C67ABFF04BF30D-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$319,608.00
63,644.688 0X1C88D38D04ACD3EDD9051EC587C67ABFF04BF30D
0.0000%
95
Solidly V3 (Base)
0X4200000000000000000000000000000000000006-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$1.00
0.0002986 Eth
$280,363.00
82.824 0X4200000000000000000000000000000000000006
0.0000%
96
LBank
DOT-USDC$0.999
0.0002988 Eth
$258,702.00
38,957.578 DOT
0.0000%
97
DeGate
0X4E15361FD6B4BB609FA63C81A2BE19D873717870-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$211,467.00
300,033.094 0X4E15361FD6B4BB609FA63C81A2BE19D873717870
0.0000%
98
Uniswap V3 (Ethereum)
0X7F39C581F595B53C5CB19BD0B3F8DA6C935E2CA0-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9937
0.0002969 Eth
$205,489.00
51.851 0X7F39C581F595B53C5CB19BD0B3F8DA6C935E2CA0
0.0000%
99
Azbit
DOT-USDC$1.00
0.0002987 Eth
$199,102.00
29,555.589 DOT
0.0000%
100
DeGate
0X8687A10BCA6F139B25EB31020FCABB5782214764-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.998
0.0002981 Eth
$158,985.00
191,615.550 0X8687A10BCA6F139B25EB31020FCABB5782214764
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
FiatTokenProxy

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, Audited
/**
 *Submitted for verification at Etherscan.io on 2018-08-03
*/

pragma solidity ^0.4.24;

// File: zos-lib/contracts/upgradeability/Proxy.sol

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  function () payable external {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal view returns (address);

  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    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 Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal {
  }

  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}

// File: openzeppelin-solidity/contracts/AddressUtils.sol

/**
 * Utility library of inline functions on addresses
 */
library AddressUtils {

  /**
   * Returns whether the target address is a contract
   * @dev This function will return false if invoked during the constructor of a contract,
   * as the code is not actually created until after the constructor finishes.
   * @param addr address to check
   * @return whether the target address is a contract
   */
  function isContract(address addr) internal view returns (bool) {
    uint256 size;
    // XXX Currently there is no better way to check if there is a contract in an address
    // than to check the size of the code at that address.
    // See https://ethereum.stackexchange.com/a/14016/36603
    // for more details about how this works.
    // TODO Check this again before the Serenity release, because all addresses will be
    // contracts then.
    // solium-disable-next-line security/no-inline-assembly
    assembly { size := extcodesize(addr) }
    return size > 0;
  }

}

// File: zos-lib/contracts/upgradeability/UpgradeabilityProxy.sol

/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address implementation);

  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "org.zeppelinos.proxy.implementation", and is
   * validated in the constructor.
   */
  bytes32 private constant IMPLEMENTATION_SLOT = 0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3;

  /**
   * @dev Contract constructor.
   * @param _implementation Address of the initial implementation.
   */
  constructor(address _implementation) public {
    assert(IMPLEMENTATION_SLOT == keccak256("org.zeppelinos.proxy.implementation"));

    _setImplementation(_implementation);
  }

  /**
   * @dev Returns the current implementation.
   * @return Address of the current implementation
   */
  function _implementation() internal view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }

  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) private {
    require(AddressUtils.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");

    bytes32 slot = IMPLEMENTATION_SLOT;

    assembly {
      sstore(slot, newImplementation)
    }
  }
}

// File: zos-lib/contracts/upgradeability/AdminUpgradeabilityProxy.sol

/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  event AdminChanged(address previousAdmin, address newAdmin);

  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "org.zeppelinos.proxy.admin", and is
   * validated in the constructor.
   */
  bytes32 private constant ADMIN_SLOT = 0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b;

  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  modifier ifAdmin() {
    if (msg.sender == _admin()) {
      _;
    } else {
      _fallback();
    }
  }

  /**
   * Contract constructor.
   * It sets the `msg.sender` as the proxy administrator.
   * @param _implementation address of the initial implementation.
   */
  constructor(address _implementation) UpgradeabilityProxy(_implementation) public {
    assert(ADMIN_SLOT == keccak256("org.zeppelinos.proxy.admin"));

    _setAdmin(msg.sender);
  }

  /**
   * @return The address of the proxy admin.
   */
  function admin() external view ifAdmin returns (address) {
    return _admin();
  }

  /**
   * @return The address of the implementation.
   */
  function implementation() external view ifAdmin returns (address) {
    return _implementation();
  }

  /**
   * @dev Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }

  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }

  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be
   * called, as described in
   * https://solidity.readthedocs.io/en/develop/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes data) payable external ifAdmin {
    _upgradeTo(newImplementation);
    require(address(this).call.value(msg.value)(data));
  }

  /**
   * @return The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }

  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;

    assembly {
      sstore(slot, newAdmin)
    }
  }

  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal {
    require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
    super._willFallback();
  }
}

// File: contracts/FiatTokenProxy.sol

/**
* Copyright CENTRE SECZ 2018
*
* Permission is hereby granted, free of charge, to any person obtaining a copy 
* of this software and associated documentation files (the "Software"), to deal 
* in the Software without restriction, including without limitation the rights 
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
* copies of the Software, and to permit persons to whom the Software is furnished to 
* do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all 
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

pragma solidity ^0.4.24;


/**
 * @title FiatTokenProxy
 * @dev This contract proxies FiatToken calls and enables FiatToken upgrades
*/ 
contract FiatTokenProxy is AdminUpgradeabilityProxy {
    constructor(address _implementation) public AdminUpgradeabilityProxy(_implementation) {
    }
}

Contract Security Audit

Contract ABI

[{"constant":false,"inputs":[{"name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newImplementation","type":"address"},{"name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_implementation","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"previousAdmin","type":"address"},{"indexed":false,"name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"implementation","type":"address"}],"name":"Upgraded","type":"event"}]

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Deployed Bytecode

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

0000000000000000000000000882477e7895bdc5cea7cb1552ed914ab157fe56

-----Decoded View---------------
Arg [0] : _implementation (address): 0x0882477e7895bdC5cea7cB1552ed914aB157Fe56

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000882477e7895bdc5cea7cb1552ed914ab157fe56


Swarm Source

bzzr://a4a547cfc7202c5acaaae74d428e988bc62ad5024eb0165532d3a8f91db4ed24
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