ETH Price: $2,343.89 (-1.91%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

721,227 ( 0.009%)

Market

Price

$10.53 @ 0.004493 ETH (-1.13%)

Onchain Market Cap

$10,530,000,000.00

Circulating Supply Market Cap

$6,607,967,288.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
130.40171214 LINK

Value
$1,373.13 ( ~0.585832896286707 Eth) [0.0000%]
0xeD68962bd9789f05E8f6cda8D0B616Ac9975c406
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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 9472.73% |ETH 0.0003846 1068.23%

Market

Volume (24H):$515,153,915.00
Market Capitalization:$6,607,967,288.00
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
LBank
LINK-USDT$10.52
0.0044903 Eth
$38,390,883.00
3,650,000.270 LINK
15.5003%
2
Binance
LINK-USDT$10.52
0.0044902 Eth
$33,886,167.00
3,204,923.500 LINK
13.6102%
3
WhiteBIT
LINK-USDT$10.52
0.0044886 Eth
$28,339,292.00
2,694,926.660 LINK
11.4445%
4
Bybit
LINK-USDT$10.54
0.0044994 Eth
$21,323,363.00
2,017,940.084 LINK
8.5695%
5
Coinbase Exchange
LINK-USD$10.52
0.0044938 Eth
$17,610,749.00
1,673,389.310 LINK
7.1063%
6
HTX
LINK-USDT$10.53
0.0044937 Eth
$13,016,350.00
1,227,900.295 LINK
5.2145%
7
Bitget
LINK-USDT$10.52
0.0044929 Eth
$9,563,026.00
902,146.015 LINK
3.8311%
8
P2B
LINK-USDT$10.52
0.0044907 Eth
$6,267,600.00
595,740.160 LINK
2.5299%
9
OKX
LINK-USDT$10.54
0.0044988 Eth
$6,184,155.00
584,435.871 LINK
2.4819%
10
Slex
LINK-USDT$10.53
0.0044972 Eth
$6,068,696.00
571,914.750 LINK
2.4287%
11
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$10.48
0.0044734 Eth
$5,011,944.00
479,543.350 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.0365%
12
Azbit
LINK-USDT$10.50
0.0044883 Eth
$4,810,033.00
453,447.000 LINK
1.9256%
13
DigiFinex
LINK-USDT$10.53
0.0044938 Eth
$4,424,217.00
420,299.450 LINK
1.7849%
14
Biconomy.com
LINK-USDT$10.53
0.0044953 Eth
$4,261,414.00
401,528.340 LINK
1.7052%
15
KuCoin
LINK-USDT$10.53
0.0044974 Eth
$3,869,669.00
367,410.698 LINK
1.5603%
16
XT.COM
LINK-USDT$10.52
0.0044946 Eth
$3,143,477.00
297,192.280 LINK
1.2621%
17
CoinW
LINK-USDT$10.52
0.0044932 Eth
$2,617,702.00
248,945.970 LINK
1.0572%
18
ProBit Global
LINK-USDT$10.51
0.0044964 Eth
$2,464,902.00
234,417.692 LINK
0.9955%
19
Kraken
LINK-USD$10.53
0.0044941 Eth
$2,316,846.00
220,087.100 LINK
0.9346%
20
Trubit
LINK-USDT$10.51
0.0044963 Eth
$2,056,877.00
194,287.180 LINK
0.8251%
21
Coinstore
LINK-USDT$10.52
0.0044955 Eth
$2,022,914.00
191,201.320 LINK
0.8120%
22
AscendEX (BitMax)
LINK-USDT$10.55
0.0045047 Eth
$1,692,608.00
160,399.800 LINK
0.6812%
23
Bitunix
LINK-USDT$10.51
0.0044926 Eth
$1,656,460.00
157,629.690 LINK
0.6694%
24
BYDFi
LINK-USDT$10.52
0.0044948 Eth
$1,621,805.00
154,127.120 LINK
0.6545%
25
Bitexen
LINK-TRY$10.56
0.0045147 Eth
$1,438,165.00
136,184.050 LINK
0.5783%
26
FameEX
LINK-USDT$10.51
0.0044926 Eth
$1,350,150.00
127,727.924 LINK
0.5424%
27
WhiteBIT
LINK-BTC$10.52
0.0044921 Eth
$1,263,861.00
120,092.960 LINK
0.5100%
28
Dex-Trade
LINK-USDT$10.53
0.0044966 Eth
$1,123,678.00
106,706.470 LINK
0.4531%
29
Bitvavo
LINK-EUR$10.51
0.0044919 Eth
$990,417.00
94,214.807 LINK
0.4001%
30
BTSE
LINK-USDT$10.51
0.0044886 Eth
$889,799.00
84,674.389 LINK
0.3596%
31
Azbit
LINK-ETH$10.51
0.0044932 Eth
$888,908.00
84,681.106 LINK
0.3596%
32
Bitexen
LINK-USDT$10.50
0.0044879 Eth
$849,133.00
80,887.000 LINK
0.3435%
33
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.52
0.0044919 Eth
$799,758.00
75,297.363 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3198%
34
FMCPAY
LINK-USDT$10.51
0.0044937 Eth
$740,982.00
69,887.616 LINK
0.2968%
35
WhiteBIT
LINK-EUR$10.51
0.0044840 Eth
$707,360.00
67,335.280 LINK
0.2860%
36
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.53
0.0044973 Eth
$609,561.00
58,416.016 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2481%
37
PointPay
LINK-USDT$10.52
0.0044979 Eth
$553,746.00
52,376.005 LINK
0.2224%
38
BigONE
LINK-USDT$10.55
0.0045114 Eth
$550,012.00
52,141.320 LINK
0.2214%
39
tanX
LINK-USDC$10.53
0.0045026 Eth
$525,893.00
49,632.560 LINK
0.2108%
40
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.49
0.0044827 Eth
$516,352.00
49,321.473 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2095%
41
EXMO
LINK-USDT$10.53
0.0044953 Eth
$495,571.00
47,074.986 LINK
0.1999%
42
LATOKEN
LINK-USDT$10.50
0.0044838 Eth
$477,441.00
45,468.130 LINK
0.1931%
43
FMCPAY
LINK-BTC$10.50
0.0044870 Eth
$462,687.00
43,748.600 LINK
0.1858%
44
FMCPAY
LINK-ETH$10.50
0.0044858 Eth
$425,122.00
40,573.920 LINK
0.1723%
45
ProBit Global
LINK-BTC$10.50
0.0044892 Eth
$413,298.00
39,369.205 LINK
0.1672%
46
Bybit
LINK-USDC$10.53
0.0044954 Eth
$393,873.00
37,100.558 LINK
0.1576%
47
Phemex
LINK-USDT$10.52
0.0044948 Eth
$370,991.00
35,276.860 LINK
0.1498%
48
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.57
0.0045139 Eth
$346,702.00
32,941.827 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1399%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.50
0.0044839 Eth
$328,220.00
31,471.645 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1336%
50
EarnBIT
LINK-USDT$10.51
0.0044894 Eth
$288,493.00
27,275.699 LINK
0.1158%
51
Coinbase Exchange
LINK-EUR$10.53
0.0045033 Eth
$249,111.00
23,648.630 LINK
0.1004%
52
CoinEx
LINK-USDT$10.50
0.0044895 Eth
$208,036.00
19,665.355 LINK
0.0835%
53
BitDelta
LINK-USDT$10.52
0.0044929 Eth
$177,911.00
16,812.000 LINK
0.0714%
54
LATOKEN
LINK-BTC$10.51
0.0044895 Eth
$172,809.00
16,436.086 LINK
0.0698%
55
OKX
LINK-USDC$10.52
0.0044890 Eth
$171,440.00
16,204.581 LINK
0.0688%
56
BitMart
LINK-BTC$10.51
0.0044918 Eth
$166,206.00
15,814.620 LINK
0.0672%
57
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$10.58
0.0045164 Eth
$165,337.00
15,680.614 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0666%
58
BYDFi
LINK-USDC$10.51
0.0044887 Eth
$151,984.00
14,454.830 LINK
0.0614%
59
Coinbase Exchange
LINK-GBP$10.53
0.0045056 Eth
$146,496.00
13,906.030 LINK
0.0591%
60
Bitbank
LINK-JPY$10.53
0.0044976 Eth
$144,271.00
13,701.611 LINK
0.0582%
61
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.52
0.0044924 Eth
$135,050.00
12,736.260 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0541%
62
Tokpie
LINK-USDT$10.52
0.0044917 Eth
$128,943.00
12,255.172 LINK
0.0520%
63
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.50
0.0044839 Eth
$122,358.00
122,848.488 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5217%
64
Bitci TR
LINK-TRY$10.60
0.0045279 Eth
$104,422.00
9,790.820 LINK
0.0416%
65
WhiteBIT
LINK-TRY$10.56
0.0045057 Eth
$98,857.00
9,365.170 LINK
0.0398%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.50
0.0044839 Eth
$88,218.00
8,362.412 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0355%
67
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.52
0.0044983 Eth
$85,455.00
85,534.737 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3632%
68
Slex
LINK-BTC$10.52
0.0044971 Eth
$80,031.00
7,574.700 LINK
0.0322%
69
Slex
LINK-ETH$10.52
0.0044986 Eth
$63,026.00
6,014.830 LINK
0.0255%
70
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$10.57
0.0045139 Eth
$56,650.00
56,630.143 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.2405%
71
PointPay
LINK-BTC$10.51
0.0044901 Eth
$52,893.00
5,004.548 LINK
0.0213%
72
GMO Japan
LINK-JPY$10.42
0.0044550 Eth
$52,537.00
5,040.200 LINK
0.0214%
73
LATOKEN
LINK-ETH$10.52
0.0044912 Eth
$52,522.00
4,993.592 LINK
0.0212%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$10.51
0.0044857 Eth
$52,440.00
4,939.619 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0210%
75
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$10.54
0.0045008 Eth
$51,075.00
4,858.024 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0206%
76
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$10.52
0.0044907 Eth
$49,974.00
4,771.082 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0203%
77
Binance
LINK-BNB$10.51
0.0044862 Eth
$45,806.00
4,317.103 LINK
0.0183%
78
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$10.50
0.0044810 Eth
$43,621.00
4,187.562 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0178%
79
Binance US
LINK-USDT$10.51
0.0044859 Eth
$34,716.00
3,303.610 LINK
0.0140%
80
Uniswap V3 (Ethereum)
0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23-0X514910771AF9CA656AF840DFF83E8264ECF986CA$10.50
0.0044847 Eth
$33,228.00
186,261.853 0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23
0.7910%
81
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$10.45
0.0044601 Eth
$31,123.00
3,012.468 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0128%
82
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$10.49
0.0044797 Eth
$30,009.00
2,852.243 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0121%
83
EXMO
LINK-BTC$10.54
0.0044997 Eth
$29,094.00
2,760.974 LINK
0.0117%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.52
0.0044975 Eth
$28,931.00
2,740.647 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0116%
85
Mercado Bitcoin
LINK-BRL$10.58
0.0045198 Eth
$28,545.00
2,697.821 LINK
0.0115%
86
KuCoin
LINK-KCS$10.51
0.0044867 Eth
$15,214.31
1,447.985 LINK
0.0061%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$10.51
0.0044910 Eth
$13,488.69
1,277.412 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0054%
88
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$10.53
0.0044973 Eth
$8,154.08
8,150.340 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.0346%
89
CoinEx
LINK-BTC$10.54
0.0045070 Eth
$7,677.33
725.184 LINK
0.0031%
90
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$10.55
0.0045052 Eth
$7,280.24
689.448 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0029%
91
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$10.57
0.0045120 Eth
$7,034.27
666.158 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0028%
92
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$10.58
0.0045181 Eth
$6,718.51
11.400 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0000%
93
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$10.57
0.0045157 Eth
$4,082.24
387.115 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0016%
94
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$10.57
0.0045127 Eth
$3,771.65
356.390 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0015%
95
Ramses V2
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.50
0.0044923 Eth
$3,300.43
316.795 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0013%
96
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F$10.57
0.0045163 Eth
$2,929.14
277.720 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0012%
97
CoinEx
LINK-USDC$10.55
0.0045102 Eth
$1,999.04
188.060 LINK
0.0008%
98
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$10.57
0.0045132 Eth
$1,835.85
173.065 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0007%
99
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$10.52
0.0044911 Eth
$1,738.86
166.727 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0007%
100
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D$10.53
0.0044957 Eth
$1,545.61
146.660 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0006%

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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