ETH Price: $3,646.85 (-1.81%)

Token

Wrapped BTC (WBTC)
 

Overview

Max Total Supply

136,273.62508145 WBTC

Holders

104,421 ( 0.013%)

Market

Price

$96,694.00 @ 26.514406 ETH (-0.38%)

Onchain Market Cap

$13,176,841,903.63

Circulating Supply Market Cap

$13,186,224,539.00

Other Info

Token Contract (WITH 8 Decimals)

Balance
0.00106903 WBTC

Value
$103.37 ( ~0.0283450280339692 Eth) [0.0000%]
0x48f57a9a6ab95f4c5a554c3203bb9aaaa0c0ec46
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OVERVIEW

Wrapped Bitcoin (WBTC) is an ERC20 token backed 1:1 with Bitcoin. Completely transparent. 100% verifiable. Community led.

Market

Volume (24H):$1,017,340,175.00
Market Capitalization:$13,186,224,539.00
Circulating Supply:136,274.00 WBTC
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Uniswap V3 (Ethereum)
0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,341.00
26.4307250 Eth
$219,143,310.00
2,270.529 0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF
0.0018%
2
Bitrue
WBTC-BTC$96,849.00
26.5446670 Eth
$106,837,048.00
1,103.135 WBTC
0.0009%
3
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,769.00
26.5481370 Eth
$98,616,606.00
1,026.904 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0008%
4
Binance
WBTC-BTC$96,684.00
26.5229360 Eth
$81,889,855.00
846.940 WBTC
0.0007%
5
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XDAC17F958D2EE523A2206206994597C13D831EC7$96,465.00
26.4646050 Eth
$70,082,598.00
727.077 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0006%
6
Binance
WBTC-USDT$96,880.00
26.5810340 Eth
$50,519,942.00
524.969 WBTC
0.0004%
7
Bybit
WBTC-USDT$96,808.00
26.5587070 Eth
$27,459,187.00
283.969 WBTC
0.0002%
8
Dexalot
WBTC-USDC$96,553.00
26.5058930 Eth
$25,948,510.00
268.795 WBTC
0.0002%
9
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,896.00
26.5829130 Eth
$21,105,699.00
220.107 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0002%
10
Bybit
WBTC-BTC$96,712.00
26.5324490 Eth
$11,752,672.00
121.389 WBTC
0.0001%
11
Tokenize
WBTC-BTC$95,772.00
26.3010050 Eth
$11,529,298.00
120.382 WBTC
0.0001%
12
Curve (Ethereum)
0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,294.00
26.4205150 Eth
$6,971,006.00
72.193 0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF
0.0001%
13
Uniswap V3 (Ethereum)
0X8236A87084F8B84306F72007F36F2618A5634494-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,919.00
26.5892140 Eth
$6,347,042.00
65.382 0X8236A87084F8B84306F72007F36F2618A5634494
0.0001%
14
Bitunix
WBTC-USDT$96,984.00
26.5771500 Eth
$5,090,108.00
52.488 WBTC
0.0000%
15
Coinbase Exchange
WBTC-BTC$96,963.00
26.5554000 Eth
$3,522,453.00
36.328 WBTC
0.0000%
16
Tokpie
WBTC-USDT$97,000.00
26.6289650 Eth
$2,488,121.00
25.651 WBTC
0.0000%
17
Uniswap V3 (Ethereum)
0X18084FBA666A33D37592FA2633FD49A74DD93A88-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,903.00
26.5813700 Eth
$1,975,479.00
20.389 0X18084FBA666A33D37592FA2633FD49A74DD93A88
0.0000%
18
DigiFinex
WBTC-BTC$96,722.00
26.5353760 Eth
$1,616,242.00
16.710 WBTC
0.0000%
19
Pionex
WBTC-BTC$96,766.00
26.5655160 Eth
$1,268,020.00
13.103 WBTC
0.0000%
20
Uniswap V3 (Ethereum)
0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,382.00
26.4386180 Eth
$1,233,812.00
12.776 0XCBB7C0000AB88B473B1F5AFD9EF808440EED33BF
0.0000%
21
Coinbase Exchange
WBTC-USD$96,989.00
26.5625240 Eth
$1,167,531.00
12.038 WBTC
0.0000%
22
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$96,934.00
26.5786580 Eth
$1,147,454.00
11.865 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
23
Azbit
WBTC-ETH$96,829.00
26.5595940 Eth
$967,761.00
10.125 WBTC
0.0000%
24
Sushiswap
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,966.00
26.5740740 Eth
$909,634.00
9.453 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
25
Balancer V2
0X657E8C867D8B37DCC18FA4CAEAD9C45EB088C642-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,730.00
26.4952500 Eth
$819,446.00
8.476 0X657E8C867D8B37DCC18FA4CAEAD9C45EB088C642
0.0000%
26
OKX
WBTC-USDT$96,954.00
26.6044320 Eth
$786,023.00
8.128 WBTC
0.0000%
27
DeGate
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$97,170.00
26.6754040 Eth
$755,649.00
7.791 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
28
Uniswap V3 (Ethereum)
0X3472A5A71965499ACD81997A54BBA8D852C6E53D-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,944.00
26.5893580 Eth
$743,404.00
207,041.170 0X3472A5A71965499ACD81997A54BBA8D852C6E53D
0.1603%
29
MEXC
WBTC-USDT$96,829.00
26.5497720 Eth
$700,197.00
7.231 WBTC
0.0000%
30
Curve (Ethereum)
0XDAC17F958D2EE523A2206206994597C13D831EC7-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,440.00
26.4579560 Eth
$696,434.00
699,352.790 0XDAC17F958D2EE523A2206206994597C13D831EC7
0.5415%
31
OKX
WBTC-BTC$96,786.00
26.5583920 Eth
$692,182.00
7.153 WBTC
0.0000%
32
BingX
WBTC-USDT$96,786.00
26.5583850 Eth
$617,607.00
6.413 WBTC
0.0000%
33
Curve (Ethereum)
0X657E8C867D8B37DCC18FA4CAEAD9C45EB088C642-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,559.00
26.4446180 Eth
$506,732.00
5.256 0X657E8C867D8B37DCC18FA4CAEAD9C45EB088C642
0.0000%
34
FMFW.io
WBTC-ETH$96,880.00
26.5717550 Eth
$498,501.00
5.146 WBTC
0.0000%
35
HitBTC
WBTC-ETH$96,838.00
26.5637730 Eth
$490,614.00
5.146 WBTC
0.0000%
36
Curve (Ethereum)
0X18084FBA666A33D37592FA2633FD49A74DD93A88-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,710.00
26.5329660 Eth
$484,318.00
5.009 0X18084FBA666A33D37592FA2633FD49A74DD93A88
0.0000%
37
Curve (Ethereum)
0XDAC17F958D2EE523A2206206994597C13D831EC7-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,465.00
26.4580990 Eth
$469,577.00
469,393.854 0XDAC17F958D2EE523A2206206994597C13D831EC7
0.3634%
38
Azbit
WBTC-USDT$96,714.00
26.5331820 Eth
$452,446.00
4.680 WBTC
0.0000%
39
Uniswap V2 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,331.00
26.3840500 Eth
$396,742.00
4.132 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
40
Uniswap V3 (Ethereum)
0X661C70333AA1850CCDBAE82776BB436A0FCFEEFB-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$97,030.00
26.5754130 Eth
$376,428.00
3.883 0X661C70333AA1850CCDBAE82776BB436A0FCFEEFB
0.0000%
41
Tokpie
BNB-WBTC$96,780.00
26.5476510 Eth
$369,592.00
546.699 BNB
0.0004%
42
Azbit
WBTC-BTC$96,770.00
26.5484160 Eth
$369,562.00
3.819 WBTC
0.0000%
43
Kraken
WBTC-XBT$96,599.00
26.5070260 Eth
$332,992.00
3.447 WBTC
0.0000%
44
Uniswap V3 (Ethereum)
0XC96DE26018A54D51C097160568752C4E3BD6C364-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$97,030.00
26.5754130 Eth
$307,085.00
3.158 0XC96DE26018A54D51C097160568752C4E3BD6C364
0.0000%
45
BitMart
WBTC-USDT$96,815.00
26.5460570 Eth
$306,725.00
3.168 WBTC
0.0000%
46
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,934.00
26.5786580 Eth
$300,104.00
19,481.651 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0151%
47
Curve (Ethereum)
0X8236A87084F8B84306F72007F36F2618A5634494-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,294.00
26.4205150 Eth
$265,168.00
2.749 0X8236A87084F8B84306F72007F36F2618A5634494
0.0000%
48
Curve (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,456.00
26.4474520 Eth
$253,208.00
254,139.476 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1968%
49
Binance
WBTC-ETH$96,614.00
26.5080680 Eth
$217,519.00
2.267 WBTC
0.0000%
50
Osmosis
IBC/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F-UOSMO$96,836.00
26.5664780 Eth
$203,307.00
2.100 IBC/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F
0.0000%
51
Uniswap V3 (Ethereum)
0X7A56E1C57C7475CCF742A1832B028F0456652F97-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,984.00
26.5790460 Eth
$167,026.00
1.723 0X7A56E1C57C7475CCF742A1832B028F0456652F97
0.0000%
52
Tokpie
DAF-WBTC$96,856.00
26.5433030 Eth
$159,214.00
111,459,627.640 DAF
86.2940%
53
CoinTR
WBTC-USDT$96,802.00
26.5131350 Eth
$156,313.00
1.616 WBTC
0.0000%
54
Tokpie
CAKE-WBTC$96,780.00
26.5476510 Eth
$151,280.00
45,877.235 CAKE
0.0355%
55
Bitfinex
WBT-USD$96,773.00
26.5492390 Eth
$148,799.00
1.538 WBT
0.0000%
56
Gate.io
WBTC-USDT$96,203.00
26.3860470 Eth
$139,979.00
1.446 WBTC
0.0000%
57
Osmosis
IBC/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F-UOSMO$96,886.00
26.5802060 Eth
$136,193.00
1.406 IBC/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F
0.0000%
58
ProBit Global
WBTC-USDT$96,872.00
26.5483880 Eth
$131,524.00
1.358 WBTC
0.0000%
59
Bitget
WBTC-USDT$96,704.00
26.5301900 Eth
$120,966.00
1.252 WBTC
0.0000%
60
Uniswap V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,745.00
26.5266670 Eth
$112,458.00
1.173 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
61
Uniswap V3 (Ethereum)
0X582D872A1B094FC48F5DE31D3B73F2D9BE47DEF1-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,944.00
26.5893580 Eth
$88,481.00
12,263.446 0X582D872A1B094FC48F5DE31D3B73F2D9BE47DEF1
0.0095%
62
Uniswap V2 (Ethereum)
0X3472A5A71965499ACD81997A54BBA8D852C6E53D-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,454.00
26.4177590 Eth
$55,469.00
15,546.768 0X3472A5A71965499ACD81997A54BBA8D852C6E53D
0.0120%
63
Gate.io
WBTC-BTC$96,358.00
26.4288040 Eth
$51,867.00
0.538 WBTC
0.0000%
64
DeGate
ETH-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$97,080.00
26.6266040 Eth
$40,974.00
11.161 ETH
0.0000%
65
Crypto.com Exchange
WBTC-USD$96,285.00
26.4152210 Eth
$39,765.00
0.413 WBTC
0.0000%
66
Sushiswap
0X3472A5A71965499ACD81997A54BBA8D852C6E53D-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,926.00
26.5843840 Eth
$39,450.00
10,991.295 0X3472A5A71965499ACD81997A54BBA8D852C6E53D
0.0085%
67
Uniswap V3 (Ethereum)
0X9BE89D2A4CD102D8FECC6BF9DA793BE995C22541-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,934.00
26.5786580 Eth
$35,917.00
0.372 0X9BE89D2A4CD102D8FECC6BF9DA793BE995C22541
0.0000%
68
MEXC
WBTC-USDC$96,667.00
26.4761200 Eth
$34,984.00
0.362 WBTC
0.0000%
69
Osmosis
IBC/498A0751C798A0D9A389AA3691123DADA57DAA4FE165D5C75894505B876BA6E4-IBC/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F$96,513.00
26.4777780 Eth
$30,909.00
30,916.299 IBC/498A0751C798A0D9A389AA3691123DADA57DAA4FE165D5C75894505B876BA6E4
0.0239%
70
Kraken
WBTC-EUR$96,570.00
26.4989580 Eth
$29,682.00
0.307 WBTC
0.0000%
71
ProBit Global
WBTC-BTC$96,861.00
26.5453300 Eth
$28,748.00
0.297 WBTC
0.0000%
72
Solidly V3 (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,718.00
26.5053780 Eth
$27,517.00
0.288 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
73
Verse
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,562.00
26.4632050 Eth
$26,675.00
0.277 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
74
Tokpie
GEM-WBTC$96,684.00
26.5450360 Eth
$26,439.00
4,312,874.720 GEM
3.3391%
75
Bitfinex
WBT-BTC$96,743.00
26.5409650 Eth
$25,753.00
0.266 WBT
0.0000%
76
Phemex
WBTC-USDT$96,798.00
26.5526040 Eth
$23,097.00
0.239 WBTC
0.0000%
77
CoinEx
WBTC-BTC$96,879.00
26.5635680 Eth
$22,813.00
0.236 WBTC
0.0000%
78
FMFW.io
WBTC-USDT$96,847.00
26.5627970 Eth
$20,179.00
0.208 WBTC
0.0000%
79
OKX
WBTC-USDC$97,150.00
26.6583270 Eth
$15,219.67
0.157 WBTC
0.0000%
80
Bitvavo
WBTC-EUR$96,778.00
26.5688310 Eth
$14,796.90
0.153 WBTC
0.0000%
81
PancakeSwap (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$96,585.00
26.4695380 Eth
$11,843.01
0.123 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
82
Stellaswap (V3)
0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D-0XACC15DC74880C9944775448304B263D191C6077F$97,362.00
26.6646630 Eth
$11,813.08
0.119 0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D
0.0000%
83
Crypto.com Exchange
WBTC-BTC$96,838.00
26.5670450 Eth
$10,448.81
0.108 WBTC
0.0000%
84
Kujira Fin
WBTC-MNTA$95,948.00
26.3467820 Eth
$10,229.95
0.106 WBTC
0.0000%
85
KuCoin
WBTC-USDT$96,398.00
26.4464680 Eth
$9,071.09
0.094 WBTC
0.0000%
86
Tokpie
BAMBOO-WBTC$96,565.00
26.5045440 Eth
$5,747.76
11,598,968.782 BAMBOO
8.9801%
87
Curve (Ethereum)
0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599-0X7F39C581F595B53C5CB19BD0B3F8DA6C935E2CA0$96,414.00
26.4509000 Eth
$5,719.86
0.059 0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599
0.0000%
88
Uniswap V3 (Ethereum)
0X004E9C3EF86BC1CA1F0BB5C7662861EE93350568-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,934.00
26.5786580 Eth
$4,097.75
0.043 0X004E9C3EF86BC1CA1F0BB5C7662861EE93350568
0.0000%
89
Raydium
9N4NBM75F5UI33ZBPYXN59EWSGE8CGSHTAETH5YFEJ9E-MSOLZYCXHDYGDZU16G5QSH3I5K3Z3KZK7YTFQCJM7SO$1,802.92
0.4945588 Eth
$3,819.96
2.092 9N4NBM75F5UI33ZBPYXN59EWSGE8CGSHTAETH5YFEJ9E
0.0000%
90
KuCoin
WBTC-BTC$96,943.00
26.5957860 Eth
$2,472.04
0.026 WBTC
0.0000%
91
FMFW.io
WBTC-BTC$96,774.00
26.5619380 Eth
$1,574.51
0.016 WBTC
0.0000%
92
Curve (Ethereum)
0XEB4C2781E4EBA804CE9A9803C67D0893436BB27D-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,677.00
26.4464110 Eth
$1,293.26
0.014 0XEB4C2781E4EBA804CE9A9803C67D0893436BB27D
0.0000%
93
StellaSwap
0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D-0XACC15DC74880C9944775448304B263D191C6077F$97,935.00
26.8390120 Eth
$1,249.28
0.013 0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D
0.0000%
94
Stellaswap (V3)
0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D-0XFFFFFFFF5AC1F9A51A93F5C527385EDF7FE98A52$97,377.00
26.6724260 Eth
$1,141.24
0.012 0XE57EBD2D67B462E9926E04A8E33F01CD0D64346D
0.0000%
95
Balancer V2
0XEB4C2781E4EBA804CE9A9803C67D0893436BB27D-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$96,363.00
26.4882690 Eth
$1,020.77
0.011 0XEB4C2781E4EBA804CE9A9803C67D0893436BB27D
0.0000%
96
Sushiswap
0X9992EC3CF6A55B00978CDDF2B27BC6882D88D1EC-0X2260FAC5E5542A773AA44FBCFEDF7C193BC2C599$97,020.00
26.5708380 Eth
$696.47
17,696.595 0X9992EC3CF6A55B00978CDDF2B27BC6882D88D1EC
0.0137%
97
CEX.IO
WBTC-BTC$96,600.00
26.5041730 Eth
$31.62
0.000 WBTC
0.0000%
98
CEX.IO
WBTC-USDC$97,353.00
26.6829500 Eth
$23.99
0.000 WBTC
0.0000%
99
CEX.IO
WBTC-USD$96,556.00
26.5110180 Eth
$21.73
0.000 WBTC
0.0000%
100
CEX.IO
WBTC-USDT$96,803.00
26.5286940 Eth
$17.34
0.000 WBTC
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
WBTC

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2018-11-24
*/

pragma solidity 0.4.24;

// File: openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * See https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address _who) public view returns (uint256);
  function transfer(address _to, uint256 _value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

// File: openzeppelin-solidity/contracts/math/SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (_a == 0) {
      return 0;
    }

    c = _a * _b;
    assert(c / _a == _b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
    // assert(_b > 0); // Solidity automatically throws when dividing by 0
    // uint256 c = _a / _b;
    // assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold
    return _a / _b;
  }

  /**
  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
    assert(_b <= _a);
    return _a - _b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    c = _a + _b;
    assert(c >= _a);
    return c;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) internal balances;

  uint256 internal totalSupply_;

  /**
  * @dev Total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev Transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
  }

}

// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address _owner, address _spender)
    public view returns (uint256);

  function transferFrom(address _from, address _to, uint256 _value)
    public returns (bool);

  function approve(address _spender, uint256 _value) public returns (bool);
  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// File: openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/issues/20
 * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    returns (bool)
  {
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);
    require(_to != address(0));

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * Beware that changing an allowance with this method brings the risk that someone may use both the old
   * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
   * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(
    address _owner,
    address _spender
   )
    public
    view
    returns (uint256)
  {
    return allowed[_owner][_spender];
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(
    address _spender,
    uint256 _addedValue
  )
    public
    returns (bool)
  {
    allowed[msg.sender][_spender] = (
      allowed[msg.sender][_spender].add(_addedValue));
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(
    address _spender,
    uint256 _subtractedValue
  )
    public
    returns (bool)
  {
    uint256 oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue >= oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

// File: openzeppelin-solidity/contracts/token/ERC20/DetailedERC20.sol

/**
 * @title DetailedERC20 token
 * @dev The decimals are only for visualization purposes.
 * All the operations are done using the smallest and indivisible token unit,
 * just as on Ethereum all the operations are done in wei.
 */
contract DetailedERC20 is ERC20 {
  string public name;
  string public symbol;
  uint8 public decimals;

  constructor(string _name, string _symbol, uint8 _decimals) public {
    name = _name;
    symbol = _symbol;
    decimals = _decimals;
  }
}

// File: openzeppelin-solidity/contracts/ownership/Ownable.sol

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipRenounced(address indexed previousOwner);
  event OwnershipTransferred(
    address indexed previousOwner,
    address indexed newOwner
  );


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to relinquish control of the contract.
   * @notice Renouncing to ownership will leave the contract without an owner.
   * It will not be possible to call the functions with the `onlyOwner`
   * modifier anymore.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function transferOwnership(address _newOwner) public onlyOwner {
    _transferOwnership(_newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address _newOwner) internal {
    require(_newOwner != address(0));
    emit OwnershipTransferred(owner, _newOwner);
    owner = _newOwner;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/MintableToken.sol

/**
 * @title Mintable token
 * @dev Simple ERC20 Token example, with mintable token creation
 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
 */
contract MintableToken is StandardToken, Ownable {
  event Mint(address indexed to, uint256 amount);
  event MintFinished();

  bool public mintingFinished = false;


  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  modifier hasMintPermission() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Function to mint tokens
   * @param _to The address that will receive the minted tokens.
   * @param _amount The amount of tokens to mint.
   * @return A boolean that indicates if the operation was successful.
   */
  function mint(
    address _to,
    uint256 _amount
  )
    public
    hasMintPermission
    canMint
    returns (bool)
  {
    totalSupply_ = totalSupply_.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    emit Transfer(address(0), _to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() public onlyOwner canMint returns (bool) {
    mintingFinished = true;
    emit MintFinished();
    return true;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/BurnableToken.sol

/**
 * @title Burnable Token
 * @dev Token that can be irreversibly burned (destroyed).
 */
contract BurnableToken is BasicToken {

  event Burn(address indexed burner, uint256 value);

  /**
   * @dev Burns a specific amount of tokens.
   * @param _value The amount of token to be burned.
   */
  function burn(uint256 _value) public {
    _burn(msg.sender, _value);
  }

  function _burn(address _who, uint256 _value) internal {
    require(_value <= balances[_who]);
    // no need to require value <= totalSupply, since that would imply the
    // sender's balance is greater than the totalSupply, which *should* be an assertion failure

    balances[_who] = balances[_who].sub(_value);
    totalSupply_ = totalSupply_.sub(_value);
    emit Burn(_who, _value);
    emit Transfer(_who, address(0), _value);
  }
}

// File: openzeppelin-solidity/contracts/lifecycle/Pausable.sol

/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() public onlyOwner whenNotPaused {
    paused = true;
    emit Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() public onlyOwner whenPaused {
    paused = false;
    emit Unpause();
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/PausableToken.sol

/**
 * @title Pausable token
 * @dev StandardToken modified with pausable transfers.
 **/
contract PausableToken is StandardToken, Pausable {

  function transfer(
    address _to,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.transfer(_to, _value);
  }

  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.transferFrom(_from, _to, _value);
  }

  function approve(
    address _spender,
    uint256 _value
  )
    public
    whenNotPaused
    returns (bool)
  {
    return super.approve(_spender, _value);
  }

  function increaseApproval(
    address _spender,
    uint _addedValue
  )
    public
    whenNotPaused
    returns (bool success)
  {
    return super.increaseApproval(_spender, _addedValue);
  }

  function decreaseApproval(
    address _spender,
    uint _subtractedValue
  )
    public
    whenNotPaused
    returns (bool success)
  {
    return super.decreaseApproval(_spender, _subtractedValue);
  }
}

// File: openzeppelin-solidity/contracts/ownership/Claimable.sol

/**
 * @title Claimable
 * @dev Extension for the Ownable contract, where the ownership needs to be claimed.
 * This allows the new owner to accept the transfer.
 */
contract Claimable is Ownable {
  address public pendingOwner;

  /**
   * @dev Modifier throws if called by any account other than the pendingOwner.
   */
  modifier onlyPendingOwner() {
    require(msg.sender == pendingOwner);
    _;
  }

  /**
   * @dev Allows the current owner to set the pendingOwner address.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    pendingOwner = newOwner;
  }

  /**
   * @dev Allows the pendingOwner address to finalize the transfer.
   */
  function claimOwnership() public onlyPendingOwner {
    emit OwnershipTransferred(owner, pendingOwner);
    owner = pendingOwner;
    pendingOwner = address(0);
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure.
 * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
  function safeTransfer(
    ERC20Basic _token,
    address _to,
    uint256 _value
  )
    internal
  {
    require(_token.transfer(_to, _value));
  }

  function safeTransferFrom(
    ERC20 _token,
    address _from,
    address _to,
    uint256 _value
  )
    internal
  {
    require(_token.transferFrom(_from, _to, _value));
  }

  function safeApprove(
    ERC20 _token,
    address _spender,
    uint256 _value
  )
    internal
  {
    require(_token.approve(_spender, _value));
  }
}

// File: openzeppelin-solidity/contracts/ownership/CanReclaimToken.sol

/**
 * @title Contracts that should be able to recover tokens
 * @author SylTi
 * @dev This allow a contract to recover any ERC20 token received in a contract by transferring the balance to the contract owner.
 * This will prevent any accidental loss of tokens.
 */
contract CanReclaimToken is Ownable {
  using SafeERC20 for ERC20Basic;

  /**
   * @dev Reclaim all ERC20Basic compatible tokens
   * @param _token ERC20Basic The address of the token contract
   */
  function reclaimToken(ERC20Basic _token) external onlyOwner {
    uint256 balance = _token.balanceOf(this);
    _token.safeTransfer(owner, balance);
  }

}

// File: contracts/utils/OwnableContract.sol

// empty block is used as this contract just inherits others.
contract OwnableContract is CanReclaimToken, Claimable { } /* solhint-disable-line no-empty-blocks */

// File: contracts/token/WBTC.sol

contract WBTC is StandardToken, DetailedERC20("Wrapped BTC", "WBTC", 8),
    MintableToken, BurnableToken, PausableToken, OwnableContract {

    function burn(uint value) public onlyOwner {
        super.burn(value);
    }

    function finishMinting() public onlyOwner returns (bool) {
        return false;
    }

    function renounceOwnership() public onlyOwner {
        revert("renouncing ownership is blocked");
    }
}

Contract Security Audit

Contract ABI

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Swarm Source

bzzr://a1e0f5cdc96081f44eea73f352e7ef8fbfbacd306ec0f0b7275c9752d31fbe32
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