ETH Price: $2,636.37 (-0.76%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

721,373 ( -0.017%)

Market

Price

$12.12 @ 0.004597 ETH (-3.43%)

Onchain Market Cap

$12,120,000,000.00

Circulating Supply Market Cap

$7,615,169,581.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
starbtc.eth
Balance
19.210709575644506574 LINK

Value
$232.83 ( ~0.0883147483534182 Eth) [0.0000%]
0xe35d5ca7dd27bda27fa571b888ab0b4d085fa831
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OVERVIEW

A blockchain-based middleware, acting as a bridge between cryptocurrency smart contracts, data feeds, APIs and traditional bank account payments.

Profitability / Loss

Since Initial Offer Price
:$0.11 10918.18% |ETH 0.0003846 1095.27%

Market

Volume (24H):$373,863,140.00
Market Capitalization:$7,615,169,581.00
Circulating Supply:626,849,971.00 LINK
Market Data Source: Coinmarketcap

ICO Information

ICO Start Date : Sep 19, 2017   
Total Cap : $32,000,000
ICO Price  : $0.11 | 0.0003846 ETH
Country : USA

# Exchange Pair Price  24H Volume % Volume
1
WhiteBIT
LINK-USDT$12.17
0.0046149 Eth
$16,284,420.00
1,338,568.650 LINK
12.0124%
2
Coinbase Exchange
LINK-USD$12.16
0.0046126 Eth
$14,216,376.00
1,169,302.220 LINK
10.4934%
3
Bybit
LINK-USDT$12.16
0.0046151 Eth
$12,942,514.00
1,047,305.330 LINK
9.3986%
4
HTX
LINK-USDT$12.15
0.0046092 Eth
$11,262,121.00
911,603.606 LINK
8.1808%
5
Bitget
LINK-USDT$12.15
0.0046105 Eth
$9,150,301.00
738,556.904 LINK
6.6279%
6
WEEX
LINK-USDT$12.16
0.0046127 Eth
$6,496,937.00
525,613.050 LINK
4.7169%
7
Azbit
LINK-USDT$12.14
0.0046060 Eth
$5,036,904.00
405,180.580 LINK
3.6361%
8
Biconomy.com
LINK-USDT$12.15
0.0046098 Eth
$4,928,889.00
397,877.373 LINK
3.5706%
9
P2B
LINK-USDT$12.16
0.0046127 Eth
$4,657,522.00
383,048.660 LINK
3.4375%
10
Slex
LINK-USDT$12.15
0.0046106 Eth
$4,009,712.00
324,816.500 LINK
2.9149%
11
OKX
LINK-USDT$12.17
0.0046178 Eth
$3,595,357.00
291,768.585 LINK
2.6183%
12
Upbit
LINK-KRW$12.13
0.0046017 Eth
$3,364,028.00
277,306.855 LINK
2.4886%
13
Trubit
LINK-USDT$12.15
0.0046105 Eth
$3,166,359.00
256,849.120 LINK
2.3050%
14
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$12.09
0.0045871 Eth
$2,669,157.00
216,331.669 0X514910771AF9CA656AF840DFF83E8264ECF986CA
1.9414%
15
ProBit Global
LINK-USDT$12.17
0.0046156 Eth
$2,576,936.00
211,805.142 LINK
1.9008%
16
KuCoin
LINK-USDT$12.16
0.0046139 Eth
$2,422,146.00
199,153.805 LINK
1.7872%
17
Gate.io
LINK-USDT$12.15
0.0046108 Eth
$2,350,591.00
190,697.380 LINK
1.7113%
18
XT.COM
LINK-USDT$12.16
0.0046139 Eth
$2,219,139.00
179,825.280 LINK
1.6138%
19
AscendEX (BitMax)
LINK-USDT$12.19
0.0046222 Eth
$1,768,694.00
145,150.000 LINK
1.3026%
20
CoinW
LINK-USDT$12.16
0.0046144 Eth
$1,745,480.00
143,508.400 LINK
1.2879%
21
WhiteBIT
LINK-BTC$12.15
0.0046108 Eth
$1,549,853.00
127,508.860 LINK
1.1443%
22
Kraken
LINK-USDT$12.16
0.0046129 Eth
$1,189,900.00
97,857.320 LINK
0.8782%
23
Bitexen
LINK-TRY$12.17
0.0046156 Eth
$1,147,815.00
94,340.280 LINK
0.8466%
24
BYDFi
LINK-USDT$12.16
0.0046143 Eth
$1,115,197.00
91,707.110 LINK
0.8230%
25
Bitvavo
LINK-EUR$12.16
0.0046129 Eth
$1,114,306.00
91,662.698 LINK
0.8226%
26
FMCPAY
LINK-USDT$12.15
0.0046089 Eth
$1,041,686.00
84,230.877 LINK
0.7559%
27
Bitexen
LINK-USDT$12.20
0.0046297 Eth
$933,217.00
76,466.040 LINK
0.6862%
28
Azbit
LINK-ETH$12.17
0.0046171 Eth
$869,613.00
70,275.351 LINK
0.6307%
29
Dex-Trade
LINK-USDT$12.15
0.0046093 Eth
$770,687.00
63,427.940 LINK
0.5692%
30
tanX
LINK-USDC$12.16
0.0046108 Eth
$687,608.00
55,532.200 LINK
0.4983%
31
FMCPAY
LINK-BTC$12.15
0.0046096 Eth
$581,012.00
47,609.300 LINK
0.4272%
32
Bybit
LINK-USDC$12.16
0.0046117 Eth
$563,523.00
45,669.545 LINK
0.4098%
33
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$12.14
0.0046044 Eth
$550,395.00
45,277.119 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.4063%
34
Bithumb
LINK-KRW$12.15
0.0046108 Eth
$511,420.00
42,078.634 LINK
0.3776%
35
BigONE
LINK-USDT$12.14
0.0046063 Eth
$509,312.00
41,956.240 LINK
0.3765%
36
EXMO
LINK-USDT$12.16
0.0046130 Eth
$446,383.00
36,710.220 LINK
0.3294%
37
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$12.14
0.0046058 Eth
$433,620.00
35,268.330 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3165%
38
CoinEx
LINK-USDT$12.16
0.0046134 Eth
$424,704.00
34,523.092 LINK
0.3098%
39
ProBit Global
LINK-BTC$12.17
0.0046159 Eth
$390,925.00
32,129.165 LINK
0.2883%
40
FMCPAY
LINK-ETH$12.15
0.0046101 Eth
$384,899.00
31,067.360 LINK
0.2788%
41
PointPay
LINK-USDT$12.15
0.0046089 Eth
$380,749.00
30,870.869 LINK
0.2770%
42
WhiteBIT
LINK-EUR$12.15
0.0046108 Eth
$363,179.00
29,880.240 LINK
0.2681%
43
Gemini
LINK-USD$12.08
0.0045843 Eth
$331,276.00
27,413.942 LINK
0.2460%
44
LATOKEN
LINK-USDT$12.15
0.0046092 Eth
$319,699.00
26,311.025 LINK
0.2361%
45
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$12.14
0.0046059 Eth
$297,899.00
24,084.579 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2161%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$12.16
0.0046131 Eth
$290,060.00
23,543.498 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2113%
47
Phemex
LINK-USDT$12.15
0.0046089 Eth
$235,585.00
19,391.170 LINK
0.1740%
48
LATOKEN
LINK-BTC$12.15
0.0046084 Eth
$226,115.00
18,612.654 LINK
0.1670%
49
BitMart
LINK-BTC$12.16
0.0046123 Eth
$185,761.00
15,278.960 LINK
0.1371%
50
BitDelta
LINK-USDT$12.15
0.0046086 Eth
$141,745.00
11,466.000 LINK
0.1029%
51
Coinbase Exchange
LINK-GBP$12.17
0.0046184 Eth
$127,740.00
10,493.290 LINK
0.0942%
52
Slex
LINK-BTC$12.13
0.0046037 Eth
$110,429.00
9,058.100 LINK
0.0813%
53
GMO Japan
LINK-JPY$12.17
0.0046174 Eth
$109,130.00
8,965.400 LINK
0.0805%
54
BYDFi
LINK-USDC$12.15
0.0046091 Eth
$108,014.00
8,892.530 LINK
0.0798%
55
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$12.14
0.0046044 Eth
$76,844.00
6,328.735 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0568%
56
Slex
LINK-ETH$12.14
0.0046080 Eth
$76,057.00
6,157.550 LINK
0.0553%
57
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$12.15
0.0046070 Eth
$73,626.00
74,365.183 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.6674%
58
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$12.16
0.0046127 Eth
$72,022.00
5,833.096 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0523%
59
PointPay
LINK-BTC$12.17
0.0046160 Eth
$67,880.00
5,567.557 LINK
0.0500%
60
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$12.15
0.0046092 Eth
$67,442.00
68,726.378 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.6168%
61
WhiteBIT
LINK-TRY$12.15
0.0046078 Eth
$64,325.00
5,295.620 LINK
0.0475%
62
Coinbase Exchange
LINK-ETH$12.12
0.0045995 Eth
$63,208.00
5,213.340 LINK
0.0468%
63
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$12.11
0.0045934 Eth
$63,151.00
5,097.105 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0457%
64
Bitso
LINK-USD$12.13
0.0046023 Eth
$58,072.00
4,786.388 LINK
0.0430%
65
Bitget
LINK-EUR$12.18
0.0046199 Eth
$54,189.00
4,365.460 LINK
0.0392%
66
Binance US
LINK-USDT$12.14
0.0046063 Eth
$52,807.00
4,349.321 LINK
0.0390%
67
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$12.16
0.0046137 Eth
$50,780.00
4,128.789 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0371%
68
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$12.16
0.0046136 Eth
$49,388.00
3,991.699 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0358%
69
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$12.10
0.0045913 Eth
$45,355.00
3,740.053 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0336%
70
OKX
LINK-USDC$12.17
0.0046156 Eth
$43,725.00
3,506.510 LINK
0.0315%
71
EXMO
LINK-BTC$12.15
0.0046111 Eth
$40,585.00
3,339.177 LINK
0.0300%
72
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$12.14
0.0046059 Eth
$35,018.00
35,604.898 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.3195%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$12.16
0.0046108 Eth
$32,272.00
2,615.635 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0235%
74
Mercado Bitcoin
LINK-BRL$12.14
0.0046063 Eth
$31,662.00
2,607.601 LINK
0.0234%
75
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$12.15
0.0046084 Eth
$29,370.00
2,390.680 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0215%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$12.14
0.0046069 Eth
$24,511.00
2,016.797 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0181%
77
Foxbit
LINK-BRL$12.17
0.0046174 Eth
$18,236.68
1,459.498 LINK
0.0131%
78
KuCoin
LINK-KCS$12.17
0.0046144 Eth
$16,146.30
1,327.219 LINK
0.0119%
79
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$12.13
0.0046009 Eth
$14,766.14
1,206.625 0X5947BB275C521040051D82396192181B413227A3
0.0108%
80
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$12.13
0.0046022 Eth
$13,210.79
1,078.242 0X5947BB275C521040051D82396192181B413227A3
0.0097%
81
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$12.13
0.0046029 Eth
$12,291.88
1,012.824 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0091%
82
Coinone
LINK-KRW$12.15
0.0046079 Eth
$10,284.05
846.682 LINK
0.0076%
83
CoinEx
LINK-BTC$12.10
0.0045918 Eth
$9,450.25
773.224 LINK
0.0069%
84
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$12.14
0.0046059 Eth
$8,663.31
8,783.979 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0788%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$12.10
0.0045893 Eth
$6,837.05
560.994 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0050%
86
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$12.12
0.0045986 Eth
$4,510.22
365.275 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0033%
87
Ramses V2
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$12.12
0.0045966 Eth
$3,624.43
295.072 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0026%
88
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$12.15
0.0046104 Eth
$2,299.45
183.168 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0016%
89
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$12.14
0.0046061 Eth
$2,295.13
185.613 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0017%
90
CoinEx
LINK-USDC$12.17
0.0046181 Eth
$2,244.50
180.654 LINK
0.0016%
91
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$12.08
0.0045821 Eth
$1,952.26
158.409 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0014%
92
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X7F5C764CBC14F9669B88837CA1490CCA17C31607$12.18
0.0046191 Eth
$1,604.82
132.872 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0012%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$12.14
0.0046051 Eth
$1,583.74
128.317 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0012%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X61299774020DA444AF134C82FA83E3810B309991$12.15
0.0046123 Eth
$1,269.16
102.139 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0009%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$12.11
0.0045922 Eth
$1,208.91
98.169 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0009%
96
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$12.11
0.0045933 Eth
$1,018.01
82.770 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0007%
97
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$12.12
0.0046014 Eth
$600.25
48.573 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0004%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XB33EAAD8D922B1083446DC23F610C2567FB5180F$12.17
0.0046160 Eth
$547.59
43.922 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0004%
99
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XBFA35599C7AEBB0DACE9B5AA3CA5F2A79624D8EB$12.15
0.0046108 Eth
$276.16
24.176 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0002%
100
Uniswap V3 (Arbitrum One)
0X912CE59144191C1204E64559FE8253A0E49E6548-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$12.07
0.0045766 Eth
$185.43
296.057 0X912CE59144191C1204E64559FE8253A0E49E6548
0.0027%

Contract Source Code Verified (Exact Match)

Contract Name:
LinkToken

Compiler Version
v0.4.16+commit.d7661dd9

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Audited

Contract Source Code (Solidity)Audit Report

/**
 *Submitted for verification at Etherscan.io on 2017-09-23
*/

pragma solidity ^0.4.16;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal constant 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 c;
  }

  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}


/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) constant returns (uint256);
  function transfer(address to, uint256 value) returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint256);
  function transferFrom(address from, address to, uint256 value) returns (bool);
  function approve(address spender, uint256 value) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract ERC677 is ERC20 {
  function transferAndCall(address to, uint value, bytes data) returns (bool success);

  event Transfer(address indexed from, address indexed to, uint value, bytes data);
}

contract ERC677Receiver {
  function onTokenTransfer(address _sender, uint _value, bytes _data);
}

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

  mapping(address => uint256) balances;

  /**
  * @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) returns (bool) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    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) constant returns (uint256 balance) {
    return balances[_owner];
  }

}


/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev 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)) 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) returns (bool) {
    var _allowance = allowed[_from][msg.sender];

    // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
    // require (_value <= _allowance);

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

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) returns (bool) {
    allowed[msg.sender][_spender] = _value;
    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) constant returns (uint256 remaining) {
    return allowed[_owner][_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
   */
  function increaseApproval (address _spender, uint _addedValue) 
    returns (bool success) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval (address _spender, uint _subtractedValue) 
    returns (bool success) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

contract ERC677Token is ERC677 {

  /**
  * @dev transfer token to a contract address with additional data if the recipient is a contact.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    returns (bool success)
  {
    super.transfer(_to, _value);
    Transfer(msg.sender, _to, _value, _data);
    if (isContract(_to)) {
      contractFallback(_to, _value, _data);
    }
    return true;
  }


  // PRIVATE

  function contractFallback(address _to, uint _value, bytes _data)
    private
  {
    ERC677Receiver receiver = ERC677Receiver(_to);
    receiver.onTokenTransfer(msg.sender, _value, _data);
  }

  function isContract(address _addr)
    private
    returns (bool hasCode)
  {
    uint length;
    assembly { length := extcodesize(_addr) }
    return length > 0;
  }

}

contract LinkToken is StandardToken, ERC677Token {

  uint public constant totalSupply = 10**27;
  string public constant name = 'ChainLink Token';
  uint8 public constant decimals = 18;
  string public constant symbol = 'LINK';

  function LinkToken()
    public
  {
    balances[msg.sender] = totalSupply;
  }

  /**
  * @dev transfer token to a specified address with additional data if the recipient is a contract.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  * @param _data The extra data to be passed to the receiving contract.
  */
  function transferAndCall(address _to, uint _value, bytes _data)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transferAndCall(_to, _value, _data);
  }

  /**
  * @dev transfer token to a specified address.
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint _value)
    public
    validRecipient(_to)
    returns (bool success)
  {
    return super.transfer(_to, _value);
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * @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
    validRecipient(_spender)
    returns (bool)
  {
    return super.approve(_spender,  _value);
  }

  /**
   * @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
    validRecipient(_to)
    returns (bool)
  {
    return super.transferFrom(_from, _to, _value);
  }


  // MODIFIERS

  modifier validRecipient(address _recipient) {
    require(_recipient != address(0) && _recipient != address(this));
    _;
  }

}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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