ETH Price: $2,725.35 (+1.27%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

735,010 ( 0.001%)

Market

Price

$19.58 @ 0.007184 ETH (+4.83%)

Onchain Market Cap

$19,580,000,000.00

Circulating Supply Market Cap

$12,472,676,754.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0xbf0f1f613e56576fa2b108629563bbdb0461dcc9
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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 17700% |ETH 0.0003846 1767.91%

Market

Volume (24H):$567,887,928.00
Market Capitalization:$12,472,676,754.00
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$19.60
0.0071812 Eth
$63,579,129.00
3,299,468.320 LINK
18.7648%
2
MEXC
LINK-USDT$19.48
0.0071447 Eth
$35,821,506.00
1,838,704.140 LINK
10.4571%
3
Coinbase Exchange
LINK-USD$19.46
0.0071356 Eth
$34,773,548.00
1,787,199.870 LINK
10.1642%
4
Bybit
LINK-USDT$19.47
0.0071392 Eth
$26,365,207.00
1,369,305.485 LINK
7.7875%
5
HTX
LINK-USDT$19.47
0.0071401 Eth
$19,758,060.00
1,030,041.328 LINK
5.8581%
6
P2B
LINK-USDT$19.53
0.0071559 Eth
$13,007,158.00
665,930.300 LINK
3.7873%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$19.59
0.0071818 Eth
$10,874,049.00
562,696.208 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.2002%
8
OKX
LINK-USDT$19.46
0.0071374 Eth
$9,487,182.00
492,220.521 LINK
2.7994%
9
DigiFinex
LINK-USDT$19.47
0.0071414 Eth
$8,219,448.00
422,096.100 LINK
2.4005%
10
Gate.io
LINK-USDT$19.47
0.0071421 Eth
$6,737,234.00
348,910.940 LINK
1.9843%
11
XT.COM
LINK-USDT$19.53
0.0071522 Eth
$6,368,480.00
330,443.710 LINK
1.8793%
12
WhiteBIT
LINK-USDT$19.52
0.0071525 Eth
$5,675,332.00
290,744.440 LINK
1.6535%
13
Coinstore
LINK-USDT$19.51
0.0071505 Eth
$5,641,702.00
292,961.040 LINK
1.6661%
14
KuCoin
LINK-USDT$19.47
0.0071407 Eth
$5,641,223.00
289,738.440 LINK
1.6478%
15
CoinW
LINK-USDT$19.61
0.0071779 Eth
$5,057,986.00
257,985.790 LINK
1.4672%
16
BTSE
LINK-USDT$19.49
0.0071460 Eth
$5,055,889.00
259,442.350 LINK
1.4755%
17
Binance
LINK-FDUSD$19.46
0.0071381 Eth
$4,598,667.00
238,837.370 LINK
1.3583%
18
Hotcoin
LINK-USDT$19.49
0.0071472 Eth
$4,320,070.00
221,629.590 LINK
1.2605%
19
Kraken
LINK-USD$19.51
0.0071548 Eth
$3,936,840.00
201,790.730 LINK
1.1476%
20
Azbit
LINK-USDT$19.61
0.0071784 Eth
$3,734,602.00
193,666.557 LINK
1.1014%
21
BYDFi
LINK-USDT$19.52
0.0071489 Eth
$3,600,423.00
184,433.290 LINK
1.0489%
22
LATOKEN
LINK-USDT$19.48
0.0071399 Eth
$3,169,728.00
162,751.199 LINK
0.9256%
23
QMall
LINK-USDT$19.49
0.0071478 Eth
$2,571,720.00
133,428.662 LINK
0.7588%
24
Coinbase Exchange
LINK-EUR$19.49
0.0071446 Eth
$2,559,415.00
131,305.990 LINK
0.7468%
25
FMCPAY
LINK-USDT$19.52
0.0071522 Eth
$2,071,646.00
107,722.065 LINK
0.6126%
26
Dex-Trade
LINK-USDT$19.54
0.0071596 Eth
$2,062,644.00
105,547.610 LINK
0.6003%
27
MEXC
LINK-USDC$19.53
0.0071543 Eth
$1,953,928.00
100,064.740 LINK
0.5691%
28
Bitvavo
LINK-EUR$19.54
0.0071569 Eth
$1,940,537.00
99,336.287 LINK
0.5649%
29
CoinEx
LINK-USDT$19.53
0.0071582 Eth
$1,700,987.00
87,697.302 LINK
0.4988%
30
Coinbase Exchange
LINK-GBP$19.50
0.0071475 Eth
$1,654,494.00
84,845.170 LINK
0.4825%
31
Biconomy.com
LINK-USDT$19.49
0.0071469 Eth
$1,571,467.00
81,780.200 LINK
0.4651%
32
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.52
0.0071587 Eth
$1,473,078.00
76,400.781 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.4345%
33
FMCPAY
LINK-ETH$19.56
0.0071637 Eth
$1,266,286.00
65,766.400 LINK
0.3740%
34
FMCPAY
LINK-BTC$19.48
0.0071426 Eth
$1,080,653.00
55,939.300 LINK
0.3181%
35
PointPay
LINK-USDT$19.53
0.0071560 Eth
$1,003,965.00
52,076.762 LINK
0.2962%
36
tanX
LINK-USDC$19.53
0.0071555 Eth
$827,093.00
43,128.110 LINK
0.2453%
37
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$19.54
0.0071648 Eth
$779,898.00
40,601.989 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2309%
38
Trubit
LINK-USDT$19.54
0.0071541 Eth
$749,779.00
39,089.360 LINK
0.2223%
39
EXMO
LINK-USDT$19.49
0.0071487 Eth
$726,778.00
37,288.364 LINK
0.2121%
40
Phemex
LINK-USDT$19.49
0.0071459 Eth
$683,038.00
35,041.050 LINK
0.1993%
41
LATOKEN
LINK-BTC$19.48
0.0071429 Eth
$653,784.00
33,563.584 LINK
0.1909%
42
Binance
LINK-EUR$19.58
0.0071687 Eth
$646,232.00
33,544.880 LINK
0.1908%
43
Gemini
LINK-USD$19.51
0.0071566 Eth
$643,642.00
32,983.303 LINK
0.1876%
44
WhiteBIT
LINK-BTC$19.52
0.0071526 Eth
$599,247.00
30,698.570 LINK
0.1746%
45
Bitbank
LINK-JPY$19.56
0.0071707 Eth
$585,942.00
29,951.010 LINK
0.1703%
46
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.59
0.0071820 Eth
$580,032.00
571,401.267 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.2497%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$19.59
0.0071820 Eth
$579,852.00
30,058.401 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1709%
48
BigONE
LINK-USDT$19.55
0.0071621 Eth
$576,403.00
29,486.570 LINK
0.1677%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.59
0.0071820 Eth
$567,511.00
29,159.207 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1658%
50
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.57
0.0071758 Eth
$544,621.00
28,340.575 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1612%
51
Binance
LINK-TRY$19.61
0.0071799 Eth
$543,835.00
28,308.340 LINK
0.1610%
52
QMall
LINK-USDC$19.57
0.0071669 Eth
$500,210.00
25,939.647 LINK
0.1475%
53
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.57
0.0071736 Eth
$491,639.00
25,253.653 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1436%
54
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$19.60
0.0071868 Eth
$467,874.00
24,549.012 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1396%
55
EarnBIT
LINK-USDT$19.55
0.0071652 Eth
$442,227.00
22,950.146 LINK
0.1305%
56
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$19.59
0.0071818 Eth
$407,493.00
39,809.428 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2264%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.52
0.0071573 Eth
$393,635.00
20,341.302 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1157%
58
Bybit
LINK-USDC$19.48
0.0071452 Eth
$391,294.00
20,314.990 LINK
0.1155%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$19.41
0.0071187 Eth
$342,776.00
17,840.023 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1015%
60
BitMart
LINK-BTC$19.49
0.0071464 Eth
$266,796.00
13,686.220 LINK
0.0778%
61
OKX
LINK-USDC$19.46
0.0071382 Eth
$266,443.00
13,791.758 LINK
0.0784%
62
BitDelta
LINK-USDT$19.52
0.0071489 Eth
$228,574.00
11,909.000 LINK
0.0677%
63
KuCoin
LINK-BTC$19.48
0.0071450 Eth
$225,355.00
11,567.583 LINK
0.0658%
64
Bitci TR
LINK-TRY$19.46
0.0071366 Eth
$196,508.00
10,273.440 LINK
0.0584%
65
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$19.48
0.0071451 Eth
$186,978.00
9,696.500 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0551%
66
GMO Japan
LINK-JPY$19.46
0.0071240 Eth
$185,590.00
9,537.700 LINK
0.0542%
67
CoinTR
LINK-TRY$19.56
0.0071674 Eth
$159,176.00
8,319.700 LINK
0.0473%
68
Hotcoin
LINK-BTC$19.54
0.0071572 Eth
$151,454.00
7,752.700 LINK
0.0441%
69
BYDFi
LINK-USDC$19.53
0.0071549 Eth
$141,646.00
7,253.960 LINK
0.0413%
70
Kraken
LINK-GBP$19.63
0.0071990 Eth
$139,192.00
7,090.808 LINK
0.0403%
71
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$19.49
0.0071397 Eth
$138,020.00
7,163.422 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0407%
72
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$19.44
0.0071311 Eth
$128,862.00
6,676.865 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0380%
73
Coinbase Exchange
LINK-ETH$19.56
0.0071718 Eth
$115,207.00
5,889.040 LINK
0.0335%
74
BitStorage
LINK-ETH$19.55
0.0071615 Eth
$106,366.00
5,441.680 LINK
0.0309%
75
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$19.52
0.0071582 Eth
$100,736.00
99,262.031 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5645%
76
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$19.52
0.0071601 Eth
$100,010.00
5,187.170 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0295%
77
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.56
0.0071721 Eth
$97,662.00
96,254.620 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5474%
78
KuCoin
LINK-USDC$19.59
0.0071856 Eth
$91,655.00
4,678.127 LINK
0.0266%
79
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$19.38
0.0071046 Eth
$78,199.00
4,054.896 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0231%
80
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$19.50
0.0071513 Eth
$73,848.00
3,821.917 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0217%
81
BitMart
LINK-ETH$19.51
0.0071517 Eth
$69,593.00
3,567.360 LINK
0.0203%
82
Bitso
LINK-USD$19.50
0.0071514 Eth
$50,530.00
2,591.399 LINK
0.0147%
83
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$19.52
0.0071511 Eth
$46,312.00
2,433.056 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0138%
84
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$19.48
0.0071452 Eth
$44,291.00
2,296.778 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0131%
85
Hotcoin
LINK-ETH$19.54
0.0071595 Eth
$43,151.00
2,208.230 LINK
0.0126%
86
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$19.59
0.0071818 Eth
$38,771.00
2,006.704 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0114%
87
Uniswap V4 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$19.50
0.0071529 Eth
$33,862.00
1,751.216 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0100%
88
Indodax
LINK-IDR$19.59
0.0071783 Eth
$23,476.00
1,198.246 LINK
0.0068%
89
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$19.60
0.0071852 Eth
$23,234.00
1,193.951 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0068%
90
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$19.45
0.0071329 Eth
$22,429.00
30.239 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0002%
91
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$19.57
0.0071742 Eth
$16,631.48
16,385.104 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.0932%
92
Dex-Trade
LINK-ETH$19.51
0.0071506 Eth
$14,249.02
730.510 LINK
0.0042%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$19.59
0.0071833 Eth
$14,007.93
723.152 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0041%
94
Bitexen
LINK-TRY$19.35
0.0070949 Eth
$12,247.54
632.819 LINK
0.0036%
95
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$19.54
0.0071672 Eth
$12,086.54
628.182 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0036%
96
Uniswap V3 (BSC)
0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$19.69
0.0072202 Eth
$11,249.78
1,370.165 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63
0.0078%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$19.57
0.0071750 Eth
$9,613.12
495.503 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0028%
98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$19.50
0.0071518 Eth
$8,426.18
436.831 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0025%
99
LFJ
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$19.68
0.0072136 Eth
$8,126.68
415.161 0X5947BB275C521040051D82396192181B413227A3
0.0024%
100
Biswap V3
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$19.44
0.0071306 Eth
$6,916.66
362.929 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0021%

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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