ETH Price: $2,508.56 (+0.27%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

722,343 ( -0.004%)

Market

Price

$11.23 @ 0.004477 ETH (-0.84%)

Onchain Market Cap

$11,230,000,000.00

Circulating Supply Market Cap

$7,038,515,484.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
MEV Bot: 0x774...14e
Balance
0.000000073426573527 LINK

Value
$0.00 ( ~0 Eth) [0.0000%]
0x7740b04a1d9026cde29dde498429109c1af9114e
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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 10109.09% |ETH 0.0003846 1064.07%

Market

Volume (24H):$428,853,418.00
Market Capitalization:$7,038,515,484.00
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$11.22
0.0044706 Eth
$35,818,091.00
3,192,596.750 LINK
17.5401%
2
Binance
LINK-USDT$11.23
0.0044736 Eth
$32,754,311.00
2,878,076.150 LINK
15.8121%
3
HTX
LINK-USDT$11.22
0.0044713 Eth
$12,879,789.00
1,135,004.448 LINK
6.2357%
4
Coinbase Exchange
LINK-USD$11.22
0.0044705 Eth
$11,225,144.00
1,000,547.610 LINK
5.4970%
5
Bitget
LINK-USDT$11.22
0.0044702 Eth
$10,565,024.00
930,701.674 LINK
5.1133%
6
Bybit
LINK-USDT$11.22
0.0044696 Eth
$9,763,952.00
859,491.247 LINK
4.7220%
7
BTSE
LINK-USDT$11.23
0.0044731 Eth
$7,597,184.00
676,802.994 LINK
3.7183%
8
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$11.28
0.0044935 Eth
$7,135,063.00
630,164.253 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.4621%
9
Gate.io
LINK-USDT$11.22
0.0044718 Eth
$7,116,129.00
624,897.870 LINK
3.4332%
10
OKX
LINK-USDT$11.21
0.0044683 Eth
$6,216,870.00
546,039.387 LINK
2.9999%
11
P2B
LINK-USDT$11.21
0.0044673 Eth
$5,899,588.00
526,444.390 LINK
2.8923%
12
Slex
LINK-USDT$11.25
0.0044826 Eth
$5,743,021.00
505,945.070 LINK
2.7797%
13
Biconomy.com
LINK-USDT$11.22
0.0044708 Eth
$3,838,700.00
337,956.130 LINK
1.8567%
14
Azbit
LINK-USDT$11.23
0.0044723 Eth
$3,361,277.00
295,841.020 LINK
1.6253%
15
XT.COM
LINK-USDT$11.22
0.0044678 Eth
$3,288,190.00
288,909.530 LINK
1.5873%
16
Bitunix
LINK-USDT$11.22
0.0044732 Eth
$3,188,563.00
284,116.460 LINK
1.5609%
17
CoinW
LINK-USDT$11.23
0.0044733 Eth
$3,029,020.00
269,773.340 LINK
1.4821%
18
Hotcoin
LINK-USDT$11.23
0.0044743 Eth
$2,835,894.00
252,550.860 LINK
1.3875%
19
Coinstore
LINK-USDT$11.22
0.0044720 Eth
$2,192,245.00
192,754.850 LINK
1.0590%
20
ProBit Global
LINK-USDT$11.21
0.0044663 Eth
$2,051,333.00
183,025.450 LINK
1.0055%
21
HashKey Global
LINK-USDT$11.24
0.0044775 Eth
$1,915,924.00
168,833.063 LINK
0.9276%
22
LBank
LINK-USDT$11.22
0.0044696 Eth
$1,867,717.00
166,508.960 LINK
0.9148%
23
Trubit
LINK-USDT$11.22
0.0044723 Eth
$1,763,191.00
154,751.570 LINK
0.8502%
24
AscendEX (BitMax)
LINK-USDT$11.19
0.0044573 Eth
$1,679,384.00
150,143.200 LINK
0.8249%
25
KuCoin
LINK-USDT$11.22
0.0044699 Eth
$1,588,406.00
141,602.328 LINK
0.7780%
26
BYDFi
LINK-USDT$11.23
0.0044732 Eth
$1,568,058.00
139,690.590 LINK
0.7675%
27
WhiteBIT
LINK-BTC$11.22
0.0044712 Eth
$1,231,408.00
109,738.330 LINK
0.6029%
28
Dex-Trade
LINK-USDT$11.21
0.0044658 Eth
$1,073,897.00
95,826.220 LINK
0.5265%
29
Bitvavo
LINK-EUR$11.27
0.0044898 Eth
$817,497.00
72,506.034 LINK
0.3983%
30
Azbit
LINK-ETH$11.23
0.0044733 Eth
$695,684.00
61,453.532 LINK
0.3376%
31
EXMO
LINK-USDT$11.22
0.0044704 Eth
$643,157.00
57,323.084 LINK
0.3149%
32
LATOKEN
LINK-USDT$11.21
0.0044655 Eth
$625,153.00
55,783.999 LINK
0.3065%
33
BigONE
LINK-USDT$11.18
0.0044546 Eth
$582,320.00
52,078.700 LINK
0.2861%
34
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.21
0.0044655 Eth
$571,547.00
50,534.773 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2776%
35
AscendEX (BitMax)
LINK-BTC$11.29
0.0044990 Eth
$571,339.00
50,605.500 LINK
0.2780%
36
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.24
0.0044798 Eth
$571,081.00
50,347.828 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2766%
37
CoinEx
LINK-USDT$11.22
0.0044707 Eth
$567,124.00
49,894.859 LINK
0.2741%
38
PointPay
LINK-USDT$11.23
0.0044747 Eth
$548,500.00
48,187.276 LINK
0.2647%
39
Bybit
LINK-USDC$11.21
0.0044659 Eth
$462,202.00
40,640.633 LINK
0.2233%
40
tanX
LINK-USDC$11.22
0.0044689 Eth
$458,902.00
40,417.330 LINK
0.2221%
41
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.23
0.0044735 Eth
$419,203.00
37,120.920 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2039%
42
Coinbase Exchange
LINK-USDT$11.28
0.0044952 Eth
$415,804.00
36,876.061 LINK
0.2026%
43
WhiteBIT
LINK-EUR$11.25
0.0044833 Eth
$410,804.00
36,512.770 LINK
0.2006%
44
LATOKEN
LINK-BTC$11.22
0.0044701 Eth
$349,771.00
31,185.145 LINK
0.1713%
45
ProBit Global
LINK-BTC$11.21
0.0044667 Eth
$344,723.00
30,750.951 LINK
0.1689%
46
Phemex
LINK-USDT$11.21
0.0044644 Eth
$328,122.00
29,283.350 LINK
0.1609%
47
WhiteBIT
LINK-TRY$11.30
0.0045012 Eth
$324,987.00
28,770.140 LINK
0.1581%
48
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.22
0.0044706 Eth
$297,618.00
26,251.376 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1442%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.22
0.0044722 Eth
$235,169.00
20,663.299 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1135%
50
KickEX
LINK-USDT$11.23
0.0044745 Eth
$220,247.00
19,606.017 LINK
0.1077%
51
Gemini
LINK-USD$11.24
0.0044772 Eth
$200,455.00
17,840.411 LINK
0.0980%
52
BitMart
LINK-BTC$11.21
0.0044684 Eth
$197,612.00
17,624.380 LINK
0.0968%
53
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$11.22
0.0044708 Eth
$187,167.00
16,448.381 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0904%
54
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$11.22
0.0044730 Eth
$182,080.00
15,997.721 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0879%
55
OKX
LINK-USDC$11.23
0.0044735 Eth
$180,558.00
15,848.918 LINK
0.0871%
56
Coinbase Exchange
LINK-GBP$11.23
0.0044763 Eth
$179,545.00
15,982.950 LINK
0.0878%
57
BYDFi
LINK-USDC$11.23
0.0044722 Eth
$168,131.00
14,977.780 LINK
0.0823%
58
Coinbase Exchange
LINK-EUR$11.25
0.0044832 Eth
$163,518.00
14,533.670 LINK
0.0798%
59
BitDelta
LINK-USDT$11.21
0.0044667 Eth
$158,008.00
13,916.000 LINK
0.0765%
60
Bitbank
LINK-JPY$11.27
0.0044915 Eth
$154,918.00
13,745.450 LINK
0.0755%
61
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.21
0.0044669 Eth
$139,794.00
142,067.860 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.7805%
62
Binance
LINK-TRY$11.29
0.0045000 Eth
$111,477.00
9,725.180 LINK
0.0534%
63
Slex
LINK-BTC$11.21
0.0044696 Eth
$103,198.00
9,101.400 LINK
0.0500%
64
GMO Japan
LINK-JPY$11.29
0.0044973 Eth
$102,384.00
9,072.000 LINK
0.0498%
65
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.21
0.0044672 Eth
$87,916.00
88,949.853 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4887%
66
PointPay
LINK-BTC$11.21
0.0044670 Eth
$64,208.00
5,663.736 LINK
0.0311%
67
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$11.21
0.0044687 Eth
$63,737.00
5,625.582 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0309%
68
Bitkub
LINK-THB$11.28
0.0044924 Eth
$63,234.00
5,605.001 LINK
0.0308%
69
Slex
LINK-ETH$11.22
0.0044694 Eth
$56,490.00
4,987.380 LINK
0.0274%
70
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$11.27
0.0044891 Eth
$51,680.00
4,584.617 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0252%
71
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.21
0.0044679 Eth
$50,900.00
4,470.049 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0246%
72
Bitso
LINK-USD$11.24
0.0044800 Eth
$46,562.00
4,141.315 LINK
0.0228%
73
Binance US
LINK-USDT$11.22
0.0044682 Eth
$41,243.00
3,677.378 LINK
0.0202%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.21
0.0044682 Eth
$40,753.00
3,589.139 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0197%
75
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.24
0.0044792 Eth
$35,658.00
36,139.389 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1985%
76
Bitcointry
LINK-USDT$11.21
0.0044693 Eth
$34,606.00
3,038.831 LINK
0.0167%
77
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$11.25
0.0044823 Eth
$25,329.00
2,235.832 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0123%
78
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$11.24
0.0044780 Eth
$20,051.00
32.252 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0002%
79
Nonkyc.io
LINK-BTC$11.16
0.0044490 Eth
$18,441.32
1,626.287 LINK
0.0089%
80
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$11.22
0.0044710 Eth
$18,231.05
1,610.450 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0088%
81
PancakeSwap V3 (BSC)
0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$11.22
0.0044707 Eth
$16,770.97
9,763.176 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82
0.0536%
82
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.21
0.0044655 Eth
$16,076.52
16,259.581 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0893%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.21
0.0044679 Eth
$15,697.66
1,379.109 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0076%
84
HTX
LINK-BTC$11.23
0.0044739 Eth
$13,868.99
1,218.180 LINK
0.0067%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.22
0.0044731 Eth
$13,065.80
1,154.933 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0063%
86
KuCoin
LINK-KCS$11.19
0.0044573 Eth
$8,041.22
718.869 LINK
0.0039%
87
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$11.29
0.0045004 Eth
$6,416.01
559.905 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0031%
88
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$11.23
0.0044748 Eth
$6,375.45
561.935 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0031%
89
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$11.22
0.0044715 Eth
$4,747.48
417.048 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0023%
90
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$11.28
0.0044936 Eth
$3,056.96
400.759 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0022%
91
CoinEx
LINK-USDC$11.25
0.0044834 Eth
$2,259.39
198.997 LINK
0.0011%
92
CoinEx
LINK-BTC$11.27
0.0044932 Eth
$2,167.01
191.054 LINK
0.0010%
93
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$11.25
0.0044829 Eth
$1,788.27
158.008 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0009%
94
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$11.30
0.0045042 Eth
$1,054.36
95.170 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0005%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$11.26
0.0044852 Eth
$981.24
86.042 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0005%
96
Balancer V2 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.25
0.0044819 Eth
$713.15
62.863 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0003%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063$11.25
0.0044835 Eth
$556.78
49.109 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0003%
98
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XB33EAAD8D922B1083446DC23F610C2567FB5180F$11.30
0.0045025 Eth
$454.09
40.979 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0002%
99
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1$11.22
0.0044690 Eth
$212.28
18.647 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0001%
100
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$11.29
0.0044990 Eth
$208.77
18.336 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

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Deployed Bytecode

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Swarm Source

bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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