ETH Price: $2,769.14 (+4.04%)
Gas: 0.81 Gwei

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

738,565 ( 0.074%)

Market

Price

$17.77 @ 0.006417 ETH (+2.67%)

Onchain Market Cap

$17,770,000,000.00

Circulating Supply Market Cap

$11,340,010,663.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
152.5469602 LINK

Value
$2,710.76 ( ~0.978916757838008 Eth) [0.0000%]
0x205292280341060996cf861c281746974865c02a
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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 16054.55% |ETH 0.0003846 1568.49%

Market

Volume (24H):$394,541,675.00
Market Capitalization:$11,340,010,663.00
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
Websea
LINK-USDT$17.74
0.0064171 Eth
$38,644,688.00
0.000 LINK
0.0000%
2
Binance
LINK-USDT$17.79
0.0064237 Eth
$36,680,921.00
2,079,779.380 LINK
17.3513%
3
WhiteBIT
LINK-USDT$17.80
0.0064260 Eth
$22,888,857.00
1,286,090.380 LINK
10.7297%
4
MEXC
LINK-USDT$17.78
0.0064208 Eth
$22,146,646.00
1,245,393.000 LINK
10.3901%
5
HTX
LINK-USDT$17.77
0.0064176 Eth
$18,383,830.00
1,043,472.107 LINK
8.7055%
6
Coinbase Exchange
LINK-USD$17.78
0.0064209 Eth
$13,510,165.00
759,723.590 LINK
6.3383%
7
P2B
LINK-USDT$17.77
0.0064178 Eth
$7,825,944.00
440,371.950 LINK
3.6740%
8
Gate.io
LINK-USDT$17.77
0.0064175 Eth
$7,815,812.00
444,201.900 LINK
3.7059%
9
OKX
LINK-USDT$17.77
0.0064185 Eth
$7,181,097.00
408,200.650 LINK
3.4056%
10
Ourbit
LINK-USDT$17.79
0.0064216 Eth
$7,069,486.00
400,713.610 LINK
3.3431%
11
BVOX
LINK-USDT$17.80
0.0064264 Eth
$5,642,698.00
319,549.160 LINK
2.6659%
12
DigiFinex
LINK-USDT$17.77
0.0064176 Eth
$4,938,416.00
277,905.060 LINK
2.3185%
13
Deepcoin
LINK-USDT$17.76
0.0064142 Eth
$3,761,674.00
220,651.469 LINK
1.8409%
14
MEXC
LINK-EUR$17.76
0.0064122 Eth
$3,705,321.00
208,640.130 LINK
1.7407%
15
FameEX
LINK-USDT$17.78
0.0064196 Eth
$3,644,965.00
206,642.748 LINK
1.7240%
16
XT.COM
LINK-USDT$17.76
0.0064146 Eth
$3,637,794.00
206,237.330 LINK
1.7206%
17
MEXC
LINK-USDC$17.81
0.0064323 Eth
$3,555,524.00
199,636.030 LINK
1.6655%
18
Coinstore
LINK-USDT$17.79
0.0064241 Eth
$3,457,734.00
196,180.730 LINK
1.6367%
19
KuCoin
LINK-USDT$17.77
0.0064188 Eth
$3,155,676.00
177,548.731 LINK
1.4813%
20
Bitunix
LINK-USDT$17.78
0.0064192 Eth
$2,731,364.00
153,591.440 LINK
1.2814%
21
Azbit
LINK-USDT$17.79
0.0064244 Eth
$2,219,165.00
125,795.286 LINK
1.0495%
22
BYDFi
LINK-USDT$17.78
0.0064210 Eth
$2,051,113.00
115,339.240 LINK
0.9623%
23
BTSE
LINK-USDT$17.78
0.0064196 Eth
$1,926,016.00
108,332.347 LINK
0.9038%
24
Biconomy.com
LINK-USDT$17.80
0.0064274 Eth
$1,505,993.00
85,458.090 LINK
0.7130%
25
QMall
LINK-USDT$17.78
0.0064208 Eth
$1,499,802.00
85,009.712 LINK
0.7092%
26
FMCPAY
LINK-USDT$17.79
0.0064231 Eth
$1,359,635.00
76,932.504 LINK
0.6418%
27
CoinEx
LINK-USDT$17.77
0.0064157 Eth
$1,252,491.00
71,216.355 LINK
0.5941%
28
Dex-Trade
LINK-USDT$17.76
0.0064150 Eth
$1,198,589.00
67,480.390 LINK
0.5630%
29
FMCPAY
LINK-ETH$17.75
0.0064153 Eth
$978,303.00
54,594.880 LINK
0.4555%
30
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.77
0.0064138 Eth
$963,492.00
53,709.551 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4481%
31
Bitvavo
LINK-EUR$17.80
0.0064264 Eth
$869,012.00
48,831.904 LINK
0.4074%
32
FMCPAY
LINK-BTC$17.77
0.0064172 Eth
$789,307.00
44,661.800 LINK
0.3726%
33
Coinbase Exchange
LINK-EUR$17.76
0.0064126 Eth
$674,092.00
37,956.960 LINK
0.3167%
34
tanX
LINK-USDC$17.78
0.0064179 Eth
$664,903.00
37,605.370 LINK
0.3137%
35
Azbit
LINK-ETH$17.76
0.0064178 Eth
$531,676.00
29,626.543 LINK
0.2472%
36
Bybit
LINK-USDC$17.72
0.0063994 Eth
$441,495.00
25,226.276 LINK
0.2105%
37
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.73
0.0064017 Eth
$435,293.00
24,516.416 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2045%
38
EXMO
LINK-USDT$17.78
0.0064217 Eth
$418,255.00
23,523.180 LINK
0.1963%
39
Coinbase Exchange
LINK-GBP$17.78
0.0064214 Eth
$399,490.00
22,463.780 LINK
0.1874%
40
BigONE
LINK-USDT$17.80
0.0064293 Eth
$349,639.00
19,639.840 LINK
0.1639%
41
Kraken
LINK-ETH$17.81
0.0064315 Eth
$348,885.00
19,590.536 LINK
0.1634%
42
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.77
0.0064159 Eth
$345,982.00
38,600.534 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3220%
43
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.77
0.0064158 Eth
$340,115.00
18,975.348 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1583%
44
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$17.80
0.0064296 Eth
$301,588.00
16,882.331 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1408%
45
BitMart
LINK-BTC$17.78
0.0064204 Eth
$278,148.00
15,640.440 LINK
0.1305%
46
Bitbank
LINK-JPY$17.85
0.0064440 Eth
$271,047.00
15,186.884 LINK
0.1267%
47
WhiteBIT
LINK-BTC$17.76
0.0064220 Eth
$262,703.00
14,790.130 LINK
0.1234%
48
LATOKEN
LINK-BTC$17.78
0.0064183 Eth
$216,748.00
12,193.071 LINK
0.1017%
49
QMall
LINK-USDC$17.78
0.0064195 Eth
$213,683.00
12,086.804 LINK
0.1008%
50
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$17.73
0.0064017 Eth
$210,633.00
11,922.370 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0995%
51
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.78
0.0064199 Eth
$184,279.00
10,226.198 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0853%
52
Slex
LINK-ETH$17.77
0.0064176 Eth
$183,706.00
10,204.580 LINK
0.0851%
53
Bitci TR
LINK-TRY$17.88
0.0064567 Eth
$181,743.00
10,255.808 LINK
0.0856%
54
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.73
0.0064017 Eth
$179,289.00
179,114.901 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.4943%
55
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.72
0.0063975 Eth
$133,476.00
7,570.480 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0632%
56
WEEX
LINK-USDC$17.78
0.0064207 Eth
$132,987.00
7,532.100 LINK
0.0628%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.79
0.0064262 Eth
$125,265.00
6,982.491 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0583%
58
BitStorage
LINK-ETH$17.77
0.0064174 Eth
$121,791.00
6,852.280 LINK
0.0572%
59
Hotcoin
LINK-BTC$17.79
0.0064223 Eth
$96,975.00
5,451.770 LINK
0.0455%
60
bitcastle
LINK-USDT$17.77
0.0064174 Eth
$87,868.00
4,980.690 LINK
0.0416%
61
BYDFi
LINK-USDC$17.72
0.0064008 Eth
$86,073.00
4,857.440 LINK
0.0405%
62
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.83
0.0064392 Eth
$84,887.00
4,797.942 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0400%
63
GMO Japan
LINK-JPY$17.83
0.0064397 Eth
$84,413.00
4,733.000 LINK
0.0395%
64
BitMart
LINK-ETH$17.77
0.0064169 Eth
$81,139.00
4,566.120 LINK
0.0381%
65
KuCoin
LINK-USDC$17.75
0.0064114 Eth
$68,051.00
3,833.222 LINK
0.0320%
66
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.79
0.0064247 Eth
$45,135.00
2,513.917 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0210%
67
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$17.80
0.0064246 Eth
$40,405.00
2,285.800 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0191%
68
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.77
0.0064138 Eth
$35,734.00
35,495.956 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.2961%
69
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.78
0.0064206 Eth
$33,183.00
1,849.405 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0154%
70
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.74
0.0064038 Eth
$29,684.00
29,672.888 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.2476%
71
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.73
0.0064017 Eth
$24,624.00
1,388.479 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0116%
72
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.84
0.0064427 Eth
$23,624.00
32.226 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
73
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.82
0.0064350 Eth
$16,114.64
1,904.006 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0159%
74
Dex-Trade
LINK-ETH$17.82
0.0064353 Eth
$14,015.25
786.570 LINK
0.0066%
75
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.75
0.0064104 Eth
$13,933.80
13,850.752 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1156%
76
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$17.75
0.0064103 Eth
$9,733.49
552.453 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0046%
77
CoinEx
LINK-USDC$17.85
0.0064467 Eth
$9,562.11
541.780 LINK
0.0045%
78
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$17.86
0.0064467 Eth
$8,317.72
464.397 0X5947BB275C521040051D82396192181B413227A3
0.0039%
79
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$17.76
0.0064139 Eth
$7,720.16
430.135 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0036%
80
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.76
0.0064139 Eth
$6,508.30
26.341 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0002%
81
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.89
0.0064571 Eth
$6,473.07
366.167 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0031%
82
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.80
0.0064281 Eth
$6,232.79
6,179.201 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0516%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$17.73
0.0064014 Eth
$6,031.47
341.109 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0028%
84
Pangolin
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$17.89
0.0064578 Eth
$5,700.37
317.473 0X5947BB275C521040051D82396192181B413227A3
0.0026%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$17.75
0.0064105 Eth
$5,048.91
285.579 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0024%
86
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$17.83
0.0064362 Eth
$3,638.01
202.171 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0017%
87
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.81
0.0064302 Eth
$3,255.52
3,227.967 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0269%
88
CoinEx
LINK-BTC$17.85
0.0064470 Eth
$3,192.72
180.221 LINK
0.0015%
89
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.78
0.0064206 Eth
$3,183.13
177.025 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0015%
90
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$17.68
0.0063834 Eth
$2,534.69
143.089 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0012%
91
Uniswap V3 (Ethereum)
0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.80
0.0064279 Eth
$2,500.36
10.090 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9
0.0001%
92
Uniswap V4 (Polygon)
0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.73
0.0064038 Eth
$2,427.30
2,422.217 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174
0.0202%
93
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$17.83
0.0064362 Eth
$1,786.84
99.716 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
94
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.74
0.0064067 Eth
$1,411.15
78.892 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0007%
95
Uniswap V2 (Ethereum)
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0.0064229 Eth
$1,289.46
56.771 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0005%
96
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XD036414FA2BCBB802691491E323BFF1348C5F4BA$17.84
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$930.68
50.732 0X5947BB275C521040051D82396192181B413227A3
0.0004%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$17.82
0.0064338 Eth
$748.24
41.659 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0003%
98
Uniswap V3 (BSC)
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0.0064364 Eth
$495.48
28.093 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0002%
99
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.76
0.0064111 Eth
$384.68
21.554 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0002%
100
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$17.83
0.0064361 Eth
$317.42
17.858 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0001%

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

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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