ETH Price: $2,812.03 (+0.97%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

738,761 ( 0.049%)

Market

Price

$17.56 @ 0.006247 ETH (-1.68%)

Onchain Market Cap

$17,560,000,000.00

Circulating Supply Market Cap

$11,205,551,510.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x7fcd2dc7384b25c57c9199f8db072b27cf5e77a3
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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 15863.64% |ETH 0.0003846 1524.28%

Market

Volume (24H):$325,419,049.00
Market Capitalization:$11,205,551,510.00
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
Binance
LINK-USDT$17.53
0.0062383 Eth
$32,708,637.00
1,838,452.910 LINK
19.1526%
2
MEXC
LINK-USDT$17.56
0.0062610 Eth
$19,338,996.00
1,101,273.280 LINK
11.4728%
3
HTX
LINK-USDT$17.55
0.0062584 Eth
$12,044,158.00
676,702.857 LINK
7.0497%
4
Coinbase Exchange
LINK-USD$17.56
0.0062633 Eth
$9,394,174.00
534,945.250 LINK
5.5729%
5
Bybit
LINK-USDT$17.56
0.0062555 Eth
$8,991,266.00
504,958.231 LINK
5.2605%
6
P2B
LINK-USDT$17.54
0.0062484 Eth
$7,004,411.00
399,320.620 LINK
4.1600%
7
Ourbit
LINK-USDT$17.53
0.0062490 Eth
$6,888,497.00
387,246.020 LINK
4.0342%
8
Bitget
LINK-USDT$17.59
0.0062714 Eth
$5,974,764.00
335,224.208 LINK
3.4923%
9
BVOX
LINK-USDT$17.56
0.0062483 Eth
$5,460,440.00
306,707.310 LINK
3.1952%
10
DigiFinex
LINK-USDT$17.59
0.0062683 Eth
$3,927,036.00
223,222.900 LINK
2.3255%
11
OKX
LINK-USDT$17.58
0.0062666 Eth
$3,294,252.00
184,942.121 LINK
1.9267%
12
FameEX
LINK-USDT$17.56
0.0062606 Eth
$3,253,312.00
182,831.642 LINK
1.9047%
13
XT.COM
LINK-USDT$17.56
0.0062580 Eth
$3,253,219.00
182,859.010 LINK
1.9050%
14
MEXC
LINK-EUR$17.53
0.0062520 Eth
$3,220,366.00
183,713.400 LINK
1.9139%
15
MEXC
LINK-USDC$17.51
0.0062475 Eth
$3,101,228.00
177,093.670 LINK
1.8449%
16
Coinstore
LINK-USDT$17.58
0.0062619 Eth
$3,014,674.00
169,463.380 LINK
1.7654%
17
KuCoin
LINK-USDT$17.58
0.0062659 Eth
$3,013,442.00
171,386.759 LINK
1.7855%
18
LBank
LINK-USDT$17.52
0.0062472 Eth
$2,858,638.00
163,135.850 LINK
1.6995%
19
Gate.io
LINK-USDT$17.58
0.0062660 Eth
$2,450,654.00
137,736.940 LINK
1.4349%
20
BTSE
LINK-USDT$17.55
0.0062518 Eth
$2,085,440.00
118,822.133 LINK
1.2379%
21
Azbit
LINK-USDT$17.53
0.0062517 Eth
$1,981,568.00
111,351.431 LINK
1.1600%
22
Bitunix
LINK-USDT$17.59
0.0062662 Eth
$1,888,066.00
107,329.290 LINK
1.1181%
23
BYDFi
LINK-USDT$17.54
0.0062482 Eth
$1,793,713.00
102,262.230 LINK
1.0653%
24
Toobit
LINK-USDT$17.59
0.0062566 Eth
$1,612,132.00
90,527.690 LINK
0.9431%
25
FMCPAY
LINK-USDT$17.53
0.0062485 Eth
$1,577,481.00
88,643.060 LINK
0.9235%
26
Kraken
LINK-USD$17.56
0.0062586 Eth
$1,294,755.00
73,723.489 LINK
0.7680%
27
Biconomy.com
LINK-USDT$17.56
0.0062629 Eth
$1,128,547.00
63,362.490 LINK
0.6601%
28
Dex-Trade
LINK-USDT$17.52
0.0062415 Eth
$1,034,476.00
59,052.746 LINK
0.6152%
29
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.60
0.0062745 Eth
$927,944.00
51,735.442 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5390%
30
FMCPAY
LINK-ETH$17.52
0.0062480 Eth
$914,127.00
50,995.520 LINK
0.5313%
31
CoinEx
LINK-USDT$17.54
0.0062528 Eth
$909,502.00
51,097.395 LINK
0.5323%
32
Bitvavo
LINK-EUR$17.59
0.0062715 Eth
$797,035.00
45,309.256 LINK
0.4720%
33
FMCPAY
LINK-BTC$17.54
0.0062505 Eth
$783,299.00
44,406.100 LINK
0.4626%
34
tanX
LINK-USDC$17.53
0.0062531 Eth
$669,428.00
37,579.680 LINK
0.3915%
35
BigONE
LINK-USDT$17.58
0.0062649 Eth
$302,662.00
17,212.900 LINK
0.1793%
36
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.53
0.0062494 Eth
$289,160.00
16,427.776 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1711%
37
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.59
0.0062687 Eth
$281,300.00
31,445.920 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3276%
38
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.61
0.0062773 Eth
$275,065.00
15,255.296 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1589%
39
BitMart
LINK-BTC$17.58
0.0062652 Eth
$274,276.00
15,600.780 LINK
0.1625%
40
WhiteBIT
LINK-BTC$17.57
0.0062667 Eth
$262,451.00
14,941.170 LINK
0.1557%
41
Coinbase Exchange
LINK-GBP$17.53
0.0062544 Eth
$244,139.00
13,926.030 LINK
0.1451%
42
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.61
0.0062773 Eth
$237,954.00
240,566.439 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.5062%
43
LATOKEN
LINK-BTC$17.56
0.0062511 Eth
$203,014.00
11,558.974 LINK
0.1204%
44
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$17.61
0.0062773 Eth
$195,659.00
10,986.402 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1145%
45
Bitbank
LINK-JPY$17.56
0.0062628 Eth
$191,150.00
10,885.721 LINK
0.1134%
46
Bitci TR
LINK-TRY$17.74
0.0063298 Eth
$187,258.00
10,466.240 LINK
0.1090%
47
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.51
0.0062426 Eth
$170,301.00
9,583.546 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0998%
48
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.51
0.0062416 Eth
$163,929.00
9,107.721 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0949%
49
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.62
0.0062809 Eth
$141,552.00
7,955.405 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0829%
50
BitStorage
LINK-ETH$17.54
0.0062489 Eth
$131,807.00
7,514.050 LINK
0.0783%
51
Slex
LINK-ETH$17.54
0.0062484 Eth
$130,280.00
7,297.590 LINK
0.0760%
52
GMO Japan
LINK-JPY$17.52
0.0062444 Eth
$102,999.00
5,880.300 LINK
0.0613%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.55
0.0062556 Eth
$91,795.00
5,117.981 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0533%
54
Bybit
LINK-USDC$17.52
0.0062442 Eth
$91,612.00
5,161.706 LINK
0.0538%
55
BitMart
LINK-ETH$17.54
0.0062493 Eth
$82,280.00
4,692.000 LINK
0.0489%
56
Hotcoin
LINK-BTC$17.59
0.0062670 Eth
$82,004.00
4,663.100 LINK
0.0486%
57
bitcastle
LINK-USDT$17.52
0.0062427 Eth
$75,393.00
4,239.510 LINK
0.0442%
58
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.54
0.0062496 Eth
$74,489.00
4,190.026 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0437%
59
BYDFi
LINK-USDC$17.52
0.0062474 Eth
$72,148.00
4,116.970 LINK
0.0429%
60
WhiteBIT
LINK-TRY$17.60
0.0062772 Eth
$62,885.00
3,572.340 LINK
0.0372%
61
Kanga
LINK-PLN$17.54
0.0062554 Eth
$55,420.00
0.000 LINK
0.0000%
62
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$17.69
0.0063064 Eth
$48,731.00
2,718.999 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0283%
63
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.58
0.0062689 Eth
$47,130.00
47,758.165 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4975%
64
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$17.58
0.0062678 Eth
$46,035.00
2,610.195 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0272%
65
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.60
0.0062745 Eth
$44,728.00
45,295.095 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4719%
66
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.57
0.0062647 Eth
$43,224.00
2,449.592 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0255%
67
Bitexen
LINK-TRY$17.44
0.0062199 Eth
$42,205.00
2,419.685 LINK
0.0252%
68
Bitso
LINK-USD$17.55
0.0062579 Eth
$40,701.00
2,318.884 LINK
0.0242%
69
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.55
0.0062602 Eth
$32,647.00
1,814.100 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0189%
70
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$17.54
0.0062527 Eth
$28,904.00
1,692.659 0X5947BB275C521040051D82396192181B413227A3
0.0176%
71
EXMO
LINK-BTC$17.60
0.0062733 Eth
$21,725.00
1,234.641 LINK
0.0129%
72
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.58
0.0062674 Eth
$21,203.00
29.334 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
73
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.64
0.0062901 Eth
$17,614.09
17,777.612 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1852%
74
Dex-Trade
LINK-ETH$17.52
0.0062446 Eth
$17,246.36
984.210 LINK
0.0103%
75
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.62
0.0062820 Eth
$14,980.77
851.453 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0089%
76
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$17.55
0.0062530 Eth
$12,342.16
694.515 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0072%
77
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$17.51
0.0062408 Eth
$7,419.40
419.364 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0044%
78
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$17.61
0.0062780 Eth
$6,774.86
380.251 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0040%
79
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.55
0.0062575 Eth
$6,772.83
6,866.148 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0715%
80
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$17.57
0.0062688 Eth
$6,269.37
753.499 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0078%
81
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.60
0.0062774 Eth
$5,239.73
291.786 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0030%
82
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$17.57
0.0062658 Eth
$5,087.70
288.321 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0030%
83
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.63
0.0062875 Eth
$4,753.55
267.622 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0028%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912$17.55
0.0062567 Eth
$4,714.97
267.433 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0028%
85
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.60
0.0062711 Eth
$4,090.21
4,139.679 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0431%
86
Uniswap V3 (Arbitrum One)
0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.61
0.0062785 Eth
$4,077.23
16.640 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196
0.0002%
87
CoinEx
LINK-USDC$17.54
0.0062497 Eth
$3,931.15
221.497 LINK
0.0023%
88
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.56
0.0062610 Eth
$3,773.11
212.887 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0022%
89
Uniswap V4 (Polygon)
0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.57
0.0062699 Eth
$3,508.06
3,554.368 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174
0.0370%
90
CoinEx
LINK-BTC$17.61
0.0062771 Eth
$3,106.98
175.699 LINK
0.0018%
91
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$17.57
0.0062681 Eth
$2,960.82
162.416 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0017%
92
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.56
0.0062618 Eth
$2,734.46
152.469 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0016%
93
Retro
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.56
0.0062619 Eth
$1,466.52
81.711 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0009%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B$17.59
0.0062651 Eth
$1,420.34
80.275 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0008%
95
Uniswap V3 (BSC)
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0.0062594 Eth
$1,305.88
74.782 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0008%
96
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XD036414FA2BCBB802691491E323BFF1348C5F4BA$17.54
0.0062491 Eth
$899.72
48.772 0X5947BB275C521040051D82396192181B413227A3
0.0005%
97
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$17.57
0.0062612 Eth
$750.08
41.865 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0004%
98
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.55
0.0062522 Eth
$475.36
26.677 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0003%
99
Uniswap V4 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.65
0.0062963 Eth
$345.25
19.351 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0002%
100
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$17.55
0.0062562 Eth
$255.57
13.204 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
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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