ETH Price: $2,708.05 (+0.41%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

736,045 ( 0.039%)

Market

Price

$18.90 @ 0.006979 ETH (-0.39%)

Onchain Market Cap

$18,900,000,000.00

Circulating Supply Market Cap

$12,051,642,685.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
598.066546193399 LINK

Value
$11,303.46 ( ~4.1740 Eth) [0.0001%]
0xA995910658808c859623c0fE2fF53e432A236739
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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 17081.82% |ETH 0.0003846 1714.61%

Market

Volume (24H):$376,924,512.00
Market Capitalization:$12,051,642,685.00
Circulating Supply:638,099,970.00 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
MEXC
LINK-USDT$19.07
0.0070506 Eth
$23,038,884.00
1,208,209.110 LINK
13.2671%
2
Bybit
LINK-USDT$19.07
0.0070450 Eth
$20,702,117.00
1,099,351.251 LINK
12.0717%
3
Coinbase Exchange
LINK-USD$19.12
0.0070689 Eth
$18,561,372.00
970,884.620 LINK
10.6611%
4
HTX
LINK-USDT$19.13
0.0070650 Eth
$15,992,000.00
847,596.229 LINK
9.3073%
5
P2B
LINK-USDT$19.07
0.0070463 Eth
$8,163,628.00
428,111.220 LINK
4.7010%
6
OKX
LINK-USDT$19.06
0.0070414 Eth
$5,482,250.00
291,356.623 LINK
3.1993%
7
BTSE
LINK-USDT$19.02
0.0070428 Eth
$4,330,882.00
227,675.598 LINK
2.5001%
8
Gate.io
LINK-USDT$19.08
0.0070480 Eth
$4,096,927.00
217,499.380 LINK
2.3883%
9
XT.COM
LINK-USDT$19.08
0.0070475 Eth
$3,985,875.00
211,421.740 LINK
2.3216%
10
WhiteBIT
LINK-USDT$19.01
0.0070374 Eth
$3,618,930.00
190,390.560 LINK
2.0906%
11
Kraken
LINK-USD$19.06
0.0070395 Eth
$3,564,930.00
187,064.244 LINK
2.0541%
12
Coinstore
LINK-USDT$19.13
0.0070658 Eth
$3,518,421.00
186,748.050 LINK
2.0506%
13
KuCoin
LINK-USDT$19.13
0.0070633 Eth
$3,445,427.00
180,147.919 LINK
1.9782%
14
CoinW
LINK-USDT$19.02
0.0070433 Eth
$3,021,205.00
158,825.220 LINK
1.7440%
15
Binance
LINK-FDUSD$18.89
0.0070215 Eth
$2,847,576.00
151,127.020 LINK
1.6595%
16
Hotcoin
LINK-USDT$19.02
0.0070428 Eth
$2,722,641.00
143,130.310 LINK
1.5717%
17
Azbit
LINK-USDT$19.00
0.0070363 Eth
$2,350,443.00
124,692.689 LINK
1.3692%
18
BYDFi
LINK-USDT$18.92
0.0070278 Eth
$2,180,618.00
115,255.760 LINK
1.2656%
19
LATOKEN
LINK-USDT$18.99
0.0070341 Eth
$1,919,623.00
101,068.558 LINK
1.1098%
20
FMCPAY
LINK-USDT$18.98
0.0070377 Eth
$1,890,587.00
100,421.635 LINK
1.1027%
21
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.01
0.0070208 Eth
$1,675,624.00
88,268.778 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.9693%
22
QMall
LINK-USDT$19.06
0.0070419 Eth
$1,635,692.00
86,752.439 LINK
0.9526%
23
Bitvavo
LINK-EUR$18.99
0.0070399 Eth
$1,519,748.00
80,044.028 LINK
0.8789%
24
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.04
0.0070311 Eth
$1,484,461.00
78,072.042 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.8573%
25
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.03
0.0070293 Eth
$1,419,617.00
74,674.844 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.8200%
26
Dex-Trade
LINK-USDT$18.99
0.0070326 Eth
$1,278,267.00
67,320.590 LINK
0.7392%
27
Biconomy.com
LINK-USDT$19.08
0.0070487 Eth
$1,254,861.00
66,528.000 LINK
0.7305%
28
FMCPAY
LINK-ETH$18.98
0.0070280 Eth
$1,206,584.00
63,579.200 LINK
0.6981%
29
Coinbase Exchange
LINK-EUR$19.04
0.0070478 Eth
$1,203,443.00
63,220.520 LINK
0.6942%
30
FMCPAY
LINK-BTC$19.00
0.0070434 Eth
$969,296.00
51,746.900 LINK
0.5682%
31
CoinEx
LINK-USDT$18.99
0.0070334 Eth
$952,510.00
50,467.604 LINK
0.5542%
32
Trubit
LINK-USDT$18.92
0.0070261 Eth
$840,493.00
44,548.860 LINK
0.4892%
33
Coinbase Exchange
LINK-GBP$19.05
0.0070542 Eth
$754,510.00
39,600.720 LINK
0.4348%
34
tanX
LINK-USDC$19.01
0.0070418 Eth
$739,149.00
39,192.050 LINK
0.4304%
35
Bitbank
LINK-JPY$19.08
0.0070582 Eth
$604,196.00
31,664.972 LINK
0.3477%
36
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.99
0.0070216 Eth
$505,546.00
26,481.527 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2908%
37
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$19.04
0.0070399 Eth
$496,439.00
26,340.484 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2892%
38
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.02
0.0070256 Eth
$475,270.00
470,225.713 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
5.1634%
39
WhiteBIT
LINK-BTC$19.10
0.0070543 Eth
$443,561.00
23,221.650 LINK
0.2550%
40
BigONE
LINK-USDT$18.96
0.0070205 Eth
$393,529.00
20,753.320 LINK
0.2279%
41
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.01
0.0070206 Eth
$348,609.00
18,350.817 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2015%
42
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$19.01
0.0070272 Eth
$337,959.00
17,986.915 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1975%
43
BitStorage
LINK-USDT$19.06
0.0070426 Eth
$329,196.00
17,272.540 LINK
0.1897%
44
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.01
0.0070218 Eth
$325,424.00
17,362.239 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1907%
45
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$19.03
0.0070266 Eth
$322,610.00
32,965.621 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3620%
46
LATOKEN
LINK-BTC$19.03
0.0070459 Eth
$308,001.00
16,184.211 LINK
0.1777%
47
EXMO
LINK-USDT$19.09
0.0070532 Eth
$268,781.00
14,081.418 LINK
0.1546%
48
BitMart
LINK-BTC$19.07
0.0070515 Eth
$260,979.00
13,684.520 LINK
0.1503%
49
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$19.03
0.0070358 Eth
$250,280.00
13,289.370 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1459%
50
QMall
LINK-USDC$19.08
0.0070486 Eth
$240,552.00
12,754.130 LINK
0.1401%
51
Gemini
LINK-USD$19.13
0.0070668 Eth
$198,189.00
10,358.706 LINK
0.1137%
52
Bitci TR
LINK-TRY$19.11
0.0070771 Eth
$196,523.00
10,354.520 LINK
0.1137%
53
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$19.10
0.0070524 Eth
$189,062.00
10,039.138 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1102%
54
GMO Japan
LINK-JPY$18.69
0.0069215 Eth
$115,100.00
6,156.900 LINK
0.0676%
55
Coinbase Exchange
LINK-BTC$19.13
0.0070686 Eth
$106,862.00
5,586.340 LINK
0.0613%
56
OKX
LINK-USDC$19.05
0.0070379 Eth
$100,545.00
5,348.722 LINK
0.0587%
57
Hotcoin
LINK-BTC$19.00
0.0070414 Eth
$95,811.00
5,043.870 LINK
0.0554%
58
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.97
0.0070245 Eth
$94,141.00
93,425.844 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.0259%
59
BYDFi
LINK-USDC$18.85
0.0070117 Eth
$87,014.00
4,616.340 LINK
0.0507%
60
Kraken
LINK-GBP$18.88
0.0069751 Eth
$82,994.00
4,395.226 LINK
0.0483%
61
Kanga
LINK-PLN$19.01
0.0070216 Eth
$82,951.00
0.000 LINK
0.0000%
62
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.03
0.0070282 Eth
$82,323.00
81,500.459 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.8949%
63
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$19.01
0.0070206 Eth
$75,555.00
4,035.573 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0443%
64
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$19.00
0.0070211 Eth
$73,428.00
3,868.178 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0425%
65
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$18.97
0.0070245 Eth
$73,209.00
3,859.290 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0424%
66
KuCoin
LINK-USDC$19.14
0.0070684 Eth
$59,047.00
3,085.102 LINK
0.0339%
67
Binance US
LINK-USDT$19.11
0.0070611 Eth
$55,805.00
2,920.362 LINK
0.0321%
68
Bitso
LINK-USD$19.09
0.0070553 Eth
$51,817.00
2,713.897 LINK
0.0298%
69
Bitexen
LINK-TRY$18.69
0.0069543 Eth
$39,660.00
2,121.926 LINK
0.0233%
70
Bitkub
LINK-THB$19.04
0.0070339 Eth
$38,560.00
2,025.672 LINK
0.0222%
71
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$19.03
0.0070266 Eth
$35,211.00
1,876.843 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0206%
72
Hotcoin
LINK-ETH$19.06
0.0070390 Eth
$24,303.00
1,275.350 LINK
0.0140%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.03
0.0070289 Eth
$23,122.00
1,232.569 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0135%
74
EXMO
LINK-BTC$19.12
0.0070636 Eth
$22,723.00
1,188.725 LINK
0.0131%
75
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.94
0.0070131 Eth
$21,262.00
28.888 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
76
Mercado Bitcoin
LINK-BRL$18.89
0.0069860 Eth
$19,829.35
1,049.961 LINK
0.0115%
77
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$18.95
0.0070193 Eth
$18,664.04
18,540.213 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.2036%
78
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$18.87
0.0069876 Eth
$18,569.20
2,133.697 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0234%
79
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.87
0.0070044 Eth
$17,679.15
934.446 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0103%
80
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$18.97
0.0070254 Eth
$17,238.92
915.310 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0101%
81
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$19.05
0.0070452 Eth
$12,247.48
650.955 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0071%
82
Dex-Trade
LINK-ETH$19.06
0.0070416 Eth
$10,950.67
574.650 LINK
0.0063%
83
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$19.03
0.0070282 Eth
$9,184.56
487.580 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0054%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$18.98
0.0070185 Eth
$8,593.99
458.012 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0050%
85
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.98
0.0070257 Eth
$8,155.87
435.057 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0048%
86
Uniswap V4 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.98
0.0070371 Eth
$7,995.80
420.619 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0046%
87
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.85
0.0069802 Eth
$6,277.58
331.788 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0036%
88
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.97
0.0070268 Eth
$6,217.37
330.135 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0036%
89
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.99
0.0070320 Eth
$5,794.04
22.399 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0002%
90
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$18.98
0.0070275 Eth
$4,782.42
251.824 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0028%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$18.97
0.0070403 Eth
$4,464.04
231.786 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0025%
92
Uniswap V4 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$18.94
0.0070370 Eth
$4,184.90
220.918 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0024%
93
CoinEx
LINK-BTC$18.93
0.0070118 Eth
$3,724.11
198.933 LINK
0.0022%
94
CoinEx
LINK-USDC$18.93
0.0070097 Eth
$3,506.59
185.835 LINK
0.0020%
95
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$18.93
0.0070304 Eth
$2,949.37
2,934.017 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0322%
96
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XD036414FA2BCBB802691491E323BFF1348C5F4BA$18.78
0.0069604 Eth
$2,561.99
134.154 0X5947BB275C521040051D82396192181B413227A3
0.0015%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$18.93
0.0070123 Eth
$1,962.32
104.819 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0012%
98
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$18.88
0.0070134 Eth
$1,698.45
88.810 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0010%
99
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$18.83
0.0069928 Eth
$820.48
43.496 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0005%
100
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$18.89
0.0070056 Eth
$476.54
475.786 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.0052%

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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