ETH Price: $3,194.14 (+1.52%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,166 ( 0.008%)

Market

Price

$24.33 @ 0.007617 ETH (+4.80%)

Onchain Market Cap

$24,330,000,000.00

Circulating Supply Market Cap

$15,512,673,559.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
1.161354303317006815 LINK

Value
$28.26 ( ~0.00884745020163251 Eth) [0.0000%]
0x52f7c0074c83a25fb27e52ba44f40e60d967461e
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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 22018.18% |ETH 0.0003846 1880.5%

Market

Volume (24H):$1,007,767,733.00
Market Capitalization:$15,512,673,559.00
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$24.38
0.0076305 Eth
$129,965,345.00
5,544,550.600 LINK
21.5397%
2
Coinbase Exchange
LINK-USD$24.37
0.0076267 Eth
$68,260,860.00
2,801,364.960 LINK
10.8828%
3
Bybit
LINK-USDT$24.35
0.0076226 Eth
$52,618,962.00
2,249,654.835 LINK
8.7395%
4
OKX
LINK-USDT$24.36
0.0076234 Eth
$27,213,474.00
1,175,383.284 LINK
4.5662%
5
P2B
LINK-USDT$24.38
0.0076298 Eth
$22,912,816.00
939,702.430 LINK
3.6506%
6
DigiFinex
LINK-USDT$24.37
0.0076289 Eth
$18,524,570.00
760,034.430 LINK
2.9526%
7
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.50
0.0076666 Eth
$18,448,332.00
770,049.352 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9915%
8
Gate.io
LINK-USDT$24.41
0.0076386 Eth
$17,752,496.00
757,710.300 LINK
2.9436%
9
MEXC
LINK-USDT$24.39
0.0076336 Eth
$15,166,181.00
621,799.350 LINK
2.4156%
10
HTX
LINK-USDT$24.37
0.0076276 Eth
$14,376,689.00
612,861.709 LINK
2.3809%
11
XT.COM
LINK-USDT$24.39
0.0076323 Eth
$12,887,197.00
549,698.540 LINK
2.1355%
12
Azbit
LINK-USDT$24.37
0.0076290 Eth
$12,663,624.00
540,498.166 LINK
2.0997%
13
Binance
LINK-FDUSD$24.27
0.0076229 Eth
$11,173,014.00
476,554.420 LINK
1.8513%
14
Bitunix
LINK-USDT$24.41
0.0076375 Eth
$11,046,208.00
452,665.480 LINK
1.7585%
15
Coinstore
LINK-USDT$24.37
0.0076354 Eth
$10,589,160.00
451,437.060 LINK
1.7538%
16
Kraken
LINK-USD$24.40
0.0076384 Eth
$10,463,916.00
428,769.071 LINK
1.6657%
17
KuCoin
LINK-USDT$24.38
0.0076310 Eth
$10,156,841.00
416,592.813 LINK
1.6184%
18
CoinW
LINK-USDT$24.36
0.0076240 Eth
$8,972,833.00
368,375.710 LINK
1.4311%
19
BYDFi
LINK-USDT$24.37
0.0076290 Eth
$7,567,334.00
310,506.250 LINK
1.2063%
20
Coinbase Exchange
LINK-EUR$24.38
0.0076301 Eth
$7,337,170.00
300,899.840 LINK
1.1689%
21
Hotcoin
LINK-USDT$24.39
0.0076309 Eth
$6,674,714.00
273,721.320 LINK
1.0634%
22
BTSE
LINK-USDT$24.37
0.0076273 Eth
$6,569,767.00
269,576.123 LINK
1.0473%
23
LBank
LINK-USDT$24.37
0.0076273 Eth
$6,569,674.00
269,571.570 LINK
1.0472%
24
LATOKEN
LINK-USDT$24.34
0.0076365 Eth
$6,401,944.00
262,994.627 LINK
1.0217%
25
QMall
LINK-USDT$24.37
0.0076290 Eth
$5,456,351.00
232,756.584 LINK
0.9042%
26
Bitvavo
LINK-EUR$24.34
0.0076257 Eth
$4,994,296.00
205,221.228 LINK
0.7973%
27
Dex-Trade
LINK-USDT$24.35
0.0076381 Eth
$3,988,248.00
163,777.760 LINK
0.6362%
28
FMCPAY
LINK-USDT$24.38
0.0076305 Eth
$3,806,735.00
162,260.890 LINK
0.6304%
29
Biconomy.com
LINK-USDT$24.28
0.0076214 Eth
$3,479,213.00
150,112.470 LINK
0.5832%
30
CoinEx
LINK-USDT$24.42
0.0076408 Eth
$2,590,625.00
110,907.788 LINK
0.4309%
31
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.22
0.0075806 Eth
$2,420,366.00
101,261.632 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3934%
32
PointPay
LINK-USDT$24.32
0.0076376 Eth
$2,188,293.00
93,324.156 LINK
0.3625%
33
Coinbase Exchange
LINK-GBP$24.36
0.0076231 Eth
$2,162,579.00
88,769.630 LINK
0.3449%
34
WhiteBIT
LINK-TRY$24.35
0.0076273 Eth
$2,073,178.00
85,135.800 LINK
0.3307%
35
Phemex
LINK-USDT$24.36
0.0076244 Eth
$1,827,873.00
75,038.820 LINK
0.2915%
36
FMCPAY
LINK-ETH$24.40
0.0076367 Eth
$1,736,805.00
72,466.560 LINK
0.2815%
37
FMCPAY
LINK-BTC$24.38
0.0076299 Eth
$1,502,128.00
62,759.200 LINK
0.2438%
38
Kraken
LINK-EUR$24.38
0.0076295 Eth
$1,468,430.00
60,241.069 LINK
0.2340%
39
OKX
LINK-USDC$24.36
0.0076249 Eth
$1,348,385.00
57,946.236 LINK
0.2251%
40
EarnBIT
LINK-USDT$24.44
0.0076469 Eth
$1,328,294.00
57,286.375 LINK
0.2225%
41
Tokpie
LINK-USDT$24.40
0.0076671 Eth
$1,261,487.00
51,695.947 LINK
0.2008%
42
Binance
LINK-TRY$24.35
0.0076378 Eth
$1,228,609.00
52,493.230 LINK
0.2039%
43
EXMO
LINK-USDT$24.42
0.0076407 Eth
$1,217,813.00
49,871.990 LINK
0.1937%
44
WhiteBIT
LINK-BTC$24.43
0.0076448 Eth
$1,191,744.00
48,782.730 LINK
0.1895%
45
Bitbank
LINK-JPY$24.53
0.0076763 Eth
$1,122,047.00
45,750.314 LINK
0.1777%
46
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.40
0.0076355 Eth
$1,108,723.00
89,685.902 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3484%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.26
0.0075932 Eth
$1,087,668.00
45,474.012 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1767%
48
BigONE
LINK-USDT$24.33
0.0076128 Eth
$1,075,232.00
44,198.480 LINK
0.1717%
49
WhiteBIT
LINK-EUR$24.38
0.0076365 Eth
$1,015,209.00
41,639.400 LINK
0.1618%
50
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$24.28
0.0075958 Eth
$1,011,017.00
42,475.380 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1650%
51
BitStorage
LINK-USDT$24.27
0.0076185 Eth
$960,913.00
39,588.460 LINK
0.1538%
52
Binance
LINK-EUR$24.39
0.0076333 Eth
$959,527.00
41,005.650 LINK
0.1593%
53
Trubit
LINK-USDT$24.42
0.0076412 Eth
$895,408.00
38,182.970 LINK
0.1483%
54
Coinbase Exchange
LINK-USDT$24.37
0.0076273 Eth
$864,217.00
35,461.165 LINK
0.1378%
55
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$24.37
0.0076275 Eth
$854,313.00
36,611.614 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1422%
56
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$24.35
0.0076188 Eth
$804,110.00
33,797.244 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1313%
57
QMall
LINK-USDC$24.31
0.0076371 Eth
$803,046.00
34,162.363 LINK
0.1327%
58
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.26
0.0075932 Eth
$775,662.00
749,349.696 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.9111%
59
Gemini
LINK-USD$24.41
0.0076407 Eth
$718,280.00
29,424.161 LINK
0.1143%
60
Bybit
LINK-USDC$24.36
0.0076255 Eth
$690,318.00
29,730.298 LINK
0.1155%
61
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.27
0.0075947 Eth
$617,678.00
25,681.261 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0998%
62
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.35
0.0076211 Eth
$566,838.00
23,656.267 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0919%
63
itBit
LINK-USD$24.37
0.0076257 Eth
$553,189.00
22,699.593 LINK
0.0882%
64
LATOKEN
LINK-BTC$24.39
0.0076342 Eth
$541,494.00
22,198.999 LINK
0.0862%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$24.26
0.0075932 Eth
$533,189.00
22,757.531 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0884%
66
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.13
0.0075522 Eth
$474,646.00
19,869.284 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0772%
67
Coinbase Exchange
LINK-BTC$24.39
0.0076317 Eth
$463,330.00
18,996.830 LINK
0.0738%
68
HashKey Exchange
LINK-USD$24.35
0.0076189 Eth
$397,531.00
16,832.285 LINK
0.0654%
69
Coinbase Exchange
LINK-ETH$24.39
0.0076349 Eth
$395,868.00
16,230.890 LINK
0.0631%
70
ProBit Global
LINK-USDT$24.45
0.0076584 Eth
$378,015.00
15,463.104 LINK
0.0601%
71
BitDelta
LINK-USDT$24.31
0.0076344 Eth
$338,951.00
14,479.000 LINK
0.0562%
72
GMO Japan
LINK-JPY$24.39
0.0076398 Eth
$297,688.00
12,207.400 LINK
0.0474%
73
BitMart
LINK-BTC$24.40
0.0076364 Eth
$293,917.00
12,047.120 LINK
0.0468%
74
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.50
0.0076666 Eth
$293,715.00
12,458.711 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0484%
75
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$24.35
0.0076213 Eth
$277,099.00
11,516.436 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0447%
76
Hotcoin
LINK-BTC$24.37
0.0076292 Eth
$265,808.00
10,906.660 LINK
0.0424%
77
Bitso
LINK-USD$24.29
0.0076103 Eth
$232,479.00
9,570.287 LINK
0.0372%
78
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.36
0.0076429 Eth
$230,306.00
9,753.070 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0379%
79
Bitci TR
LINK-TRY$24.20
0.0075734 Eth
$224,478.00
9,559.600 LINK
0.0371%
80
Slex
LINK-ETH$24.40
0.0076391 Eth
$219,965.00
9,153.870 LINK
0.0356%
81
BitStorage
LINK-ETH$24.42
0.0076409 Eth
$217,876.00
8,923.120 LINK
0.0347%
82
BYDFi
LINK-USDC$24.36
0.0076233 Eth
$210,932.00
8,658.630 LINK
0.0336%
83
PointPay
LINK-BTC$24.38
0.0076321 Eth
$210,657.00
8,822.992 LINK
0.0343%
84
KuCoin
LINK-USDC$24.40
0.0076363 Eth
$209,918.00
8,603.959 LINK
0.0334%
85
Foxbit
LINK-BRL$24.10
0.0075402 Eth
$194,208.00
8,323.066 LINK
0.0323%
86
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$24.22
0.0075806 Eth
$193,454.00
185,639.886 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7212%
87
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.36
0.0076222 Eth
$176,543.00
169,565.596 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.6587%
88
Binance
LINK-BRL$24.08
0.0075648 Eth
$165,412.00
7,063.950 LINK
0.0274%
89
Mercado Bitcoin
LINK-BRL$24.04
0.0075234 Eth
$163,498.00
6,801.927 LINK
0.0264%
90
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.40
0.0076349 Eth
$158,181.00
6,611.247 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0257%
91
Bitkub
LINK-THB$24.28
0.0076059 Eth
$150,845.00
6,213.258 LINK
0.0241%
92
Kraken
LINK-GBP$24.22
0.0075813 Eth
$135,266.00
5,584.463 LINK
0.0217%
93
Binance US
LINK-USDT$24.36
0.0076229 Eth
$115,610.00
4,745.509 LINK
0.0184%
94
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.50
0.0076666 Eth
$107,949.00
8,645.119 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0336%
95
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$24.22
0.0075796 Eth
$106,197.00
4,460.107 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0173%
96
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$24.28
0.0075983 Eth
$103,256.00
4,356.812 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0169%
97
BitMart
LINK-ETH$24.41
0.0076418 Eth
$93,116.00
3,813.920 LINK
0.0148%
98
Hotcoin
LINK-ETH$24.29
0.0076322 Eth
$76,696.00
3,157.380 LINK
0.0123%
99
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$24.42
0.0076403 Eth
$68,511.00
89.990 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0003%
100
Dex-Trade
LINK-ETH$24.43
0.0076445 Eth
$33,643.00
1,377.070 LINK
0.0053%

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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