ETH Price: $3,483.91 (-0.21%)

Token

USDC (USDC)
 

Overview

Max Total Supply

30,391,000,395.570835 USDC

Holders

2,509,811 (0.00%)

Market

Price

$1.00 @ 0.000287 ETH (-0.16%)

Onchain Market Cap

$30,341,007,199.92

Circulating Supply Market Cap

$43,177,755,271.00

Other Info

Token Contract (WITH 6 Decimals)

Filtered by Token Holder
37666.eth
Balance
0 USDC

Value
$0.00
0xd90b8bd42dc000fe62432f85dce94c3198d8e415
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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):$5,939,330,343.00
Market Capitalization:$43,177,755,271.00
Circulating Supply:43,259,683,604.00 USDC
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Aerodrome SlipStream
0X4200000000000000000000000000000000000006-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$0.9995
0.0002873 Eth
$448,134,334.00
128,777.878 0X4200000000000000000000000000000000000006
0.0086%
2
Azbit
BTC-USDC$0.9999
0.0002873 Eth
$302,347,460.00
3,068.046 BTC
0.0002%
3
WEEX
BTC-USDC$1.00
0.0002866 Eth
$251,549,499.00
2,527.958 BTC
0.0002%
4
Binance
BTC-USDC$0.9999
0.0002875 Eth
$247,503,773.00
2,511.385 BTC
0.0002%
5
Uniswap V3 (Ethereum)
0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0002875 Eth
$145,031,369.00
41,629.171 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2
0.0028%
6
Aerodrome SlipStream
0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$1.001
0.0002875 Eth
$138,732,405.00
1,407.531 0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF
0.0001%
7
Binance
ETH-USDC$1.001
0.0002865 Eth
$127,164,068.00
36,450.586 ETH
0.0024%
8
Bybit
BTC-USDC$0.9996
0.0002874 Eth
$108,254,671.00
1,099.674 BTC
0.0001%
9
DigiFinex
BTC-USDC$1.00
0.0002875 Eth
$71,148,202.00
718.748 BTC
0.0000%
10
Curve (Ethereum)
0X73A15FED60BF67631DC6CD7BC5B6E8DA8190ACF5-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0002873 Eth
$52,002,619.00
51,982,537.772 0X73A15FED60BF67631DC6CD7BC5B6E8DA8190ACF5
3.4585%
11
Curve (Ethereum)
0X66A1E37C9B0EADDCA17D3662D6C05F4DECF3E110-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.00
0.0002875 Eth
$51,182,601.00
51,142,724.137 0X66A1E37C9B0EADDCA17D3662D6C05F4DECF3E110
3.4027%
12
Binance
SOL-USDC$0.9996
0.0002869 Eth
$48,473,860.00
244,499.766 SOL
0.0163%
13
Binance
FDUSD-USDC$0.9999
0.0002849 Eth
$41,858,026.00
41,752,141.000 FDUSD
2.7779%
14
DigiFinex
ETH-USDC$1.00
0.0002875 Eth
$34,870,961.00
10,024.556 ETH
0.0007%
15
Velodrome SlipStream
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X4200000000000000000000000000000000000006$1.004
0.0002884 Eth
$32,252,803.00
32,162,200.908 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
2.1398%
16
Meteora
2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002873 Eth
$31,978,965.00
872,862,466.048 2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV
58.0740%
17
Uniswap V3 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.005
0.0002889 Eth
$25,574,583.00
25,556,114.834 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
1.7003%
18
WhiteBIT
BTC-USDC$0.9999
0.0002873 Eth
$22,259,827.00
224.762 BTC
0.0000%
19
Biconomy.com
BTC-USDC$0.9999
0.0002873 Eth
$20,745,283.00
210.711 BTC
0.0000%
20
PancakeSwap V3 (Base)
0X4200000000000000000000000000000000000006-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$0.9995
0.0002873 Eth
$19,333,254.00
5,556.708 0X4200000000000000000000000000000000000006
0.0004%
21
LBank
ETH-USDC$0.9998
0.0002863 Eth
$19,306,418.00
5,533.450 ETH
0.0004%
22
Azbit
ETH-USDC$0.9998
0.0002871 Eth
$18,978,505.00
5,444.084 ETH
0.0004%
23
Meteora
27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002874 Eth
$18,282,211.00
4,292,515.675 27G8MTK7VTTCCHKPASJSDDKWWYFOQT6GGEUKIDVJIDD4
0.2856%
24
Binance
DOGE-USDC$0.9999
0.0002849 Eth
$17,555,775.00
52,704,197.000 DOGE
3.5066%
25
Cetus
0XDBA34672E30CB065B1F93E3AB55318768FD6FEF66C15942C9F7CB846E2F900E7::USDC::USDC-0X2::SUI::SUI$1.00
0.0002876 Eth
$17,086,120.00
17,478,824.844 0XDBA34672E30CB065B1F93E3AB55318768FD6FEF66C15942C9F7CB846E2F900E7::USDC::USDC
1.1629%
26
Hotcoin
BTC-USDC$0.9994
0.0002871 Eth
$16,781,909.00
169.402 BTC
0.0000%
27
XT.COM
ETH-USDC$1.00
0.0002873 Eth
$15,932,754.00
4,569.983 ETH
0.0003%
28
WhiteBIT
ETH-USDC$1.001
0.0002863 Eth
$15,647,677.00
4,476.851 ETH
0.0003%
29
LFJ V2.1 (Avalanche)
0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E$1.004
0.0002886 Eth
$15,345,959.00
375,592.269 0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7
0.0250%
30
Uniswap V3 (Avalanche)
0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E$0.9999
0.0002875 Eth
$13,091,971.00
321,245.666 0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7
0.0214%
31
Meteora
SO11111111111111111111111111111111111111112-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002874 Eth
$12,439,870.00
62,770.409 SO11111111111111111111111111111111111111112
0.0042%
32
SushiSwap V3 (Base)
0X4200000000000000000000000000000000000006-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$0.9993
0.0002873 Eth
$11,739,842.00
3,373.241 0X4200000000000000000000000000000000000006
0.0002%
33
Uniswap V3 (Base)
0X4F9FD6BE4A90F2620860D680C0D4D5FB53D1A825-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$0.9911
0.0002849 Eth
$10,724,861.00
32,894,084.595 0X4F9FD6BE4A90F2620860D680C0D4D5FB53D1A825
2.1885%
34
Hotcoin
ETH-USDC$1.001
0.0002862 Eth
$9,600,312.00
2,744.647 ETH
0.0002%
35
Dexalot
USDT-USDC$1.00
0.0002855 Eth
$9,311,825.00
9,315,781.990 USDT
0.6198%
36
KuCoin
BTC-USDC$0.9999
0.0002874 Eth
$8,921,661.00
90.120 BTC
0.0000%
37
Meteora
2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002873 Eth
$8,244,796.00
224,845,496.026 2ZMMHCVQEXDTDE6VSFS7S7D5OUODFJHE8VD1GNBOUAUV
14.9596%
38
Uniswap V3 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X4200000000000000000000000000000000000006$0.9999
0.0002873 Eth
$7,037,026.00
7,043,248.208 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.4686%
39
Meteora
3NZ9JMVBMGAQOCYBIC2C7LQCJSCMGSAZ6VQQTDZCQMJH-EPJFWDD5AUFQSSQEM2QN1XZYBAPC8G4WEGGKZWYTDT1V$1.00
0.0002873 Eth
$6,448,791.00
65.659 3NZ9JMVBMGAQOCYBIC2C7LQCJSCMGSAZ6VQQTDZCQMJH
0.0000%
40
KuCoin
ETH-USDC$0.9999
0.0002874 Eth
$5,617,242.00
1,615.172 ETH
0.0001%
41
HTX
BTC-USDC$0.9999
0.0002874 Eth
$5,094,902.00
51.762 BTC
0.0000%
42
HTX
ETH-USDC$0.9999
0.0002874 Eth
$4,762,807.00
1,368.369 ETH
0.0001%
43
QMall
ETH-USDC$0.9996
0.0002874 Eth
$4,459,479.00
1,279.536 ETH
0.0001%
44
Deribit Spot
ETH-USDC$1.00
0.0002865 Eth
$4,333,625.00
1,245.746 ETH
0.0001%
45
Dex-Trade
ETH-USDC$0.9996
0.0002862 Eth
$4,319,941.00
1,238.304 ETH
0.0001%
46
BingX
DOGE-USDC$0.9999
0.0002875 Eth
$4,220,732.00
12,674,341.000 DOGE
0.8433%
47
Tapbit
XRP-USDC$1.00
0.0002873 Eth
$4,033,046.00
1,758,932.000 XRP
0.1170%
48
Binance
HBAR-USDC$1.001
0.0002865 Eth
$3,952,735.00
12,589,132.000 HBAR
0.8376%
49
Coinbase Exchange
EURC-USDC$1.00
0.0002873 Eth
$3,834,480.00
3,690,823.000 EURC
0.2456%
50
BYDFi
BTC-USDC$0.9998
0.0002867 Eth
$3,569,432.00
35.983 BTC
0.0000%
51
OKX
HBAR-USDC$0.9999
0.0002873 Eth
$3,253,638.00
10,398,580.732 HBAR
0.6918%
52
Cube
BTC-USDC$1.00
0.0002873 Eth
$3,058,538.00
31.049 BTC
0.0000%
53
Azbit
XRP-USDC$0.9996
0.0002874 Eth
$2,998,199.00
1,307,588.193 XRP
0.0870%
54
BYDFi
ETH-USDC$0.9996
0.0002874 Eth
$2,752,528.00
791.402 ETH
0.0001%
55
WhiteBIT
XRP-USDC$0.9999
0.0002873 Eth
$2,666,593.00
1,169,174.800 XRP
0.0778%
56
Deribit Spot
STETH-USDC$0.9997
0.0002871 Eth
$2,341,043.00
672.844 STETH
0.0000%
57
PointPay
BTC-USDC$1.001
0.0002865 Eth
$2,339,793.00
23.706 BTC
0.0000%
58
KuCoin
USDT-USDC$0.9999
0.0002874 Eth
$2,338,684.00
2,341,047.220 USDT
0.1558%
59
tanX
BTC-USDC$0.9999
0.0002874 Eth
$2,325,913.00
23.670 BTC
0.0000%
60
Binance US
BTC-USDC$0.9989
0.0002870 Eth
$2,173,953.00
21.973 BTC
0.0000%
61
Bitget
ARB-USDC$0.9996
0.0002874 Eth
$1,803,342.00
2,246,541.200 ARB
0.1495%
62
Deribit Spot
XRP-USDC$0.9996
0.0002874 Eth
$1,604,374.00
699,871.000 XRP
0.0466%
63
Binance
TAO-USDC$0.9999
0.0002849 Eth
$1,585,068.00
3,130.159 TAO
0.0002%
64
Backpack Exchange
SOL-USDC$0.9997
0.0002872 Eth
$1,511,220.00
7,638.370 SOL
0.0005%
65
Binance
ENA-USDC$1.00
0.0002863 Eth
$1,398,489.00
1,359,630.930 ENA
0.0905%
66
Azbit
ADA-USDC$0.9994
0.0002863 Eth
$1,382,991.00
1,506,030.760 ADA
0.1002%
67
Cube
SOL-USDC$1.001
0.0002874 Eth
$1,298,810.00
6,548.103 SOL
0.0004%
68
Solidly V3 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$1.00
0.0002873 Eth
$1,275,074.00
1,274,946.714 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.0848%
69
WhiteBIT
ADA-USDC$0.9999
0.0002873 Eth
$1,206,964.00
1,321,791.800 ADA
0.0879%
70
DeGate
0X4D1C297D39C5C1277964D0E3F8AA901493664530-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$1,042,137.00
1,391,882.830 0X4D1C297D39C5C1277964D0E3F8AA901493664530
0.0926%
71
Bybit
DOT-USDC$0.9996
0.0002874 Eth
$996,249.00
133,222.332 DOT
0.0089%
72
Vertex (Spot)
WBTC-USDC$0.9999
0.0002874 Eth
$949,449.00
9.685 WBTC
0.0000%
73
Biconomy.com
USDT-USDC$0.9994
0.0002871 Eth
$919,405.00
920,724.791 USDT
0.0613%
74
WEEX
AVAX-USDC$1.00
0.0002865 Eth
$803,052.00
19,828.833 AVAX
0.0013%
75
KuCoin
XRP-USDC$0.9999
0.0002874 Eth
$789,371.00
346,370.303 XRP
0.0230%
76
Deribit Spot
SOL-USDC$0.9996
0.0002874 Eth
$691,486.00
3,490.000 SOL
0.0002%
77
Tokpie
DAI-USDC$0.9997
0.0002863 Eth
$671,237.00
671,413.540 DAI
0.0447%
78
DeGate
0X44108F0223A3C3028F5FE7AEC7F9BB2E66BEF82F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$583,173.00
948,416.120 0X44108F0223A3C3028F5FE7AEC7F9BB2E66BEF82F
0.0631%
79
OKX
NEAR-USDC$0.9999
0.0002873 Eth
$569,209.00
103,285.217 NEAR
0.0069%
80
Bitstamp
BTC-USDC$1.00
0.0002875 Eth
$569,134.00
5.746 BTC
0.0000%
81
Solidly V3 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.00
0.0002875 Eth
$543,196.00
706,878.614 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0470%
82
PointPay
SOL-USDC$0.9999
0.0002875 Eth
$535,636.00
2,700.731 SOL
0.0002%
83
BingX
UNI-USDC$0.9999
0.0002875 Eth
$453,949.00
32,284.348 UNI
0.0021%
84
DeGate
0XB50721BCF8D664C30412CFBC6CF7A15145234AD1-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$441,323.00
549,050.510 0XB50721BCF8D664C30412CFBC6CF7A15145234AD1
0.0365%
85
DeGate
0X7420B4B9A0110CDC71FB720908340C03F9BC03EC-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$406,942.00
10,365,893.800 0X7420B4B9A0110CDC71FB720908340C03F9BC03EC
0.6897%
86
DeGate
0X1C88D38D04ACD3EDD9051EC587C67ABFF04BF30D-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$376,550.00
68,397.360 0X1C88D38D04ACD3EDD9051EC587C67ABFF04BF30D
0.0046%
87
DeGate
0X7A58C0BE72BE218B41C608B7FE7C5BB630736C71-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9992
0.0002868 Eth
$247,674.00
5,422,119.600 0X7A58C0BE72BE218B41C608B7FE7C5BB630736C71
0.3607%
88
DeGate
0X4E15361FD6B4BB609FA63C81A2BE19D873717870-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$225,093.00
228,751.545 0X4E15361FD6B4BB609FA63C81A2BE19D873717870
0.0152%
89
DeGate
0X84074EA631DEC7A4EDCD5303D164D5DEA4C653D6-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$223,163.00
49,162.495 0X84074EA631DEC7A4EDCD5303D164D5DEA4C653D6
0.0033%
90
Azbit
DOT-USDC$0.9994
0.0002863 Eth
$222,978.00
29,846.024 DOT
0.0020%
91
DeGate
0X6985884C4392D348587B19CB9EAAF157F13271CD-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$219,836.00
36,085.519 0X6985884C4392D348587B19CB9EAAF157F13271CD
0.0024%
92
Solidly V3 (Base)
0X4200000000000000000000000000000000000006-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913$1.002
0.0002880 Eth
$216,049.00
61.892 0X4200000000000000000000000000000000000006
0.0000%
93
DeGate
0X3845BADADE8E6DFF049820680D1F14BD3903A5D0-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9992
0.0002868 Eth
$210,444.00
342,020.940 0X3845BADADE8E6DFF049820680D1F14BD3903A5D0
0.0228%
94
DeGate
0X8687A10BCA6F139B25EB31020FCABB5782214764-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$170,555.00
189,214.104 0X8687A10BCA6F139B25EB31020FCABB5782214764
0.0126%
95
DeGate
0XCA14007EFF0DB1F8135F4C25B34DE49AB0D42766-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$160,124.00
320,440.440 0XCA14007EFF0DB1F8135F4C25B34DE49AB0D42766
0.0213%
96
DeGate
0X467719AD09025FCC6CF6F8311755809D45A5E5F3-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9992
0.0002868 Eth
$159,544.00
196,714.150 0X467719AD09025FCC6CF6F8311755809D45A5E5F3
0.0131%
97
DeGate
0X0F5D2FB29FB7D3CFEE444A200298F468908CC942-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$137,389.00
258,331.970 0X0F5D2FB29FB7D3CFEE444A200298F468908CC942
0.0172%
98
DeGate
0XBB0E17EF65F82AB018D8EDD776E8DD940327B28B-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$122,307.00
17,993.982 0XBB0E17EF65F82AB018D8EDD776E8DD940327B28B
0.0012%
99
DeGate
0X88DF592F8EB5D7BD38BFEF7DEB0FBC02CF3778A0-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$95,555.00
1,448.336 0X88DF592F8EB5D7BD38BFEF7DEB0FBC02CF3778A0
0.0001%
100
DeGate
0X0BC529C00C6401AEF6D220BE8C6EA1667F6AD93E-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$0.9993
0.0002869 Eth
$93,317.00
10.148 0X0BC529C00C6401AEF6D220BE8C6EA1667F6AD93E
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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