ETH Price: $3,327.52 (-4.77%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,808 ( 0.062%)

Market

Price

$22.65 @ 0.006807 ETH (-7.20%)

Onchain Market Cap

$22,650,000,000.00

Circulating Supply Market Cap

$14,285,611,617.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.056345129664309957 LINK

Value
$1.28 ( ~0.000384671360951445 Eth) [0.0000%]
0xc61fa84aa2214ecec055363d50e99bd0532db5c9
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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 20490.91% |ETH 0.0003846 1669.89%

Market

Volume (24H):$967,095,838.00
Market Capitalization:$14,285,611,617.00
Circulating Supply:631,099,972.00 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$22.67
0.0068205 Eth
$100,210,080.00
4,313,044.480 LINK
19.0199%
2
WhiteBIT
LINK-USDT$22.62
0.0068021 Eth
$37,536,668.00
1,659,265.130 LINK
7.3171%
3
Coinbase Exchange
LINK-USD$22.66
0.0068193 Eth
$36,688,237.00
1,619,003.460 LINK
7.1396%
4
Bitget
LINK-USDT$22.66
0.0068195 Eth
$33,166,588.00
1,425,476.691 LINK
6.2862%
5
MEXC
LINK-USDT$22.59
0.0068133 Eth
$28,658,274.00
1,268,421.150 LINK
5.5936%
6
Bybit
LINK-USDT$22.67
0.0068205 Eth
$27,649,500.00
1,187,136.017 LINK
5.2351%
7
P2B
LINK-USDT$22.66
0.0068221 Eth
$20,062,795.00
885,282.070 LINK
3.9040%
8
CoinW
LINK-USDT$22.67
0.0068231 Eth
$19,841,610.00
875,390.990 LINK
3.8604%
9
OKX
LINK-USDT$22.68
0.0068218 Eth
$18,015,916.00
776,073.492 LINK
3.4224%
10
DigiFinex
LINK-USDT$22.67
0.0068206 Eth
$12,921,566.00
570,066.150 LINK
2.5139%
11
HTX
LINK-USDT$22.65
0.0068148 Eth
$11,427,477.00
493,224.249 LINK
2.1750%
12
FameEX
LINK-USDT$22.66
0.0068268 Eth
$10,009,081.00
430,490.932 LINK
1.8984%
13
Azbit
LINK-USDT$22.58
0.0068103 Eth
$9,983,246.00
429,686.261 LINK
1.8949%
14
XT.COM
LINK-USDT$22.62
0.0068044 Eth
$9,977,258.00
429,282.110 LINK
1.8931%
15
Coinstore
LINK-USDT$22.57
0.0068067 Eth
$8,679,391.00
373,742.550 LINK
1.6482%
16
Bitunix
LINK-USDT$22.63
0.0068238 Eth
$7,999,539.00
353,436.270 LINK
1.5586%
17
BTSE
LINK-USDT$22.69
0.0068295 Eth
$7,700,292.00
339,322.640 LINK
1.4964%
18
Binance
LINK-FDUSD$22.63
0.0068216 Eth
$7,415,323.00
318,000.600 LINK
1.4023%
19
Kraken
LINK-USD$22.66
0.0068175 Eth
$6,884,713.00
303,798.138 LINK
1.3397%
20
Biconomy.com
LINK-USDT$22.63
0.0068235 Eth
$6,811,918.00
293,311.284 LINK
1.2935%
21
BYDFi
LINK-USDT$22.63
0.0068057 Eth
$6,174,277.00
272,782.300 LINK
1.2029%
22
KuCoin
LINK-USDT$22.67
0.0068231 Eth
$5,630,317.00
248,320.342 LINK
1.0951%
23
Hotcoin
LINK-USDT$22.60
0.0068080 Eth
$4,955,315.00
219,246.800 LINK
0.9668%
24
LATOKEN
LINK-USDT$22.66
0.0068208 Eth
$4,879,418.00
215,306.304 LINK
0.9495%
25
LBank
LINK-USDT$22.65
0.0068145 Eth
$4,552,016.00
201,002.130 LINK
0.8864%
26
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$22.57
0.0067894 Eth
$4,221,750.00
184,492.227 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.8136%
27
FMCPAY
LINK-USDT$22.64
0.0068172 Eth
$3,585,054.00
154,138.514 LINK
0.6797%
28
Dex-Trade
LINK-USDT$22.51
0.0067898 Eth
$3,169,443.00
140,788.540 LINK
0.6209%
29
ProBit Global
LINK-USDT$22.59
0.0068129 Eth
$2,649,287.00
117,267.457 LINK
0.5171%
30
Coinbase Exchange
LINK-GBP$22.61
0.0068189 Eth
$2,610,739.00
115,457.880 LINK
0.5092%
31
Bitvavo
LINK-EUR$22.66
0.0068134 Eth
$2,521,491.00
111,288.516 LINK
0.4908%
32
Dcoin
LINK-USDT$22.69
0.0068231 Eth
$2,375,473.00
104,682.000 LINK
0.4616%
33
CoinEx
LINK-USDT$22.60
0.0068153 Eth
$2,216,219.00
95,611.934 LINK
0.4216%
34
PointPay
LINK-USDT$22.66
0.0068202 Eth
$1,644,290.00
70,857.599 LINK
0.3125%
35
Bitbank
LINK-JPY$22.69
0.0068284 Eth
$1,495,706.00
65,916.055 LINK
0.2907%
36
FMCPAY
LINK-ETH$22.54
0.0067944 Eth
$1,466,324.00
64,442.240 LINK
0.2842%
37
FMCPAY
LINK-BTC$22.66
0.0068203 Eth
$1,424,221.00
62,059.700 LINK
0.2737%
38
EXMO
LINK-USDT$22.67
0.0068228 Eth
$1,404,384.00
61,937.800 LINK
0.2731%
39
Bitstamp
LINK-USD$22.68
0.0068228 Eth
$1,280,573.00
56,462.654 LINK
0.2490%
40
WhiteBIT
LINK-BTC$22.53
0.0068017 Eth
$1,224,698.00
54,365.830 LINK
0.2397%
41
WhiteBIT
LINK-TRY$22.76
0.0068480 Eth
$1,191,029.00
52,335.020 LINK
0.2308%
42
Phemex
LINK-USDT$22.63
0.0068057 Eth
$1,170,328.00
51,705.620 LINK
0.2280%
43
Bitstamp
LINK-EUR$22.63
0.0068066 Eth
$1,075,440.00
47,530.836 LINK
0.2096%
44
Coinbase Exchange
LINK-EUR$22.65
0.0068305 Eth
$1,002,579.00
44,262.520 LINK
0.1952%
45
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.68
0.0068251 Eth
$934,961.00
40,724.409 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1796%
46
Trubit
LINK-USDT$22.65
0.0068237 Eth
$914,466.00
39,391.190 LINK
0.1737%
47
EarnBIT
LINK-USDT$22.67
0.0068225 Eth
$855,931.00
36,907.367 LINK
0.1628%
48
BigONE
LINK-USDT$22.64
0.0068281 Eth
$821,376.00
36,275.930 LINK
0.1600%
49
itBit
LINK-USD$22.69
0.0068258 Eth
$815,997.00
35,962.853 LINK
0.1586%
50
BitStorage
LINK-USDT$22.63
0.0068151 Eth
$807,232.00
35,667.970 LINK
0.1573%
51
Azbit
LINK-ETH$22.63
0.0068094 Eth
$724,908.00
31,832.960 LINK
0.1404%
52
ProBit Global
LINK-BTC$22.56
0.0067997 Eth
$638,799.00
28,315.823 LINK
0.1249%
53
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$22.65
0.0068172 Eth
$507,973.00
22,141.161 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0976%
54
Koinpark
LINK-USDT$22.66
0.0068137 Eth
$502,613.00
22,176.995 LINK
0.0978%
55
Binance
LINK-TRY$22.75
0.0068446 Eth
$499,391.00
21,575.530 LINK
0.0951%
56
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.60
0.0068011 Eth
$489,456.00
21,729.130 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0958%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.68
0.0068257 Eth
$479,657.00
20,916.912 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0922%
58
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$22.84
0.0068724 Eth
$467,211.00
19,952.370 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0880%
59
HashKey Exchange
LINK-USD$22.77
0.0068190 Eth
$462,922.00
19,913.831 LINK
0.0878%
60
Coinbase Exchange
LINK-USDT$22.52
0.0067923 Eth
$456,407.00
20,263.498 LINK
0.0894%
61
Slex
LINK-ETH$22.64
0.0068122 Eth
$406,460.00
17,834.480 LINK
0.0786%
62
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.68
0.0068241 Eth
$397,870.00
17,219.501 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0759%
63
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.58
0.0067917 Eth
$397,404.00
410,805.863 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.8116%
64
BitMart
LINK-BTC$22.66
0.0068169 Eth
$361,489.00
15,952.520 LINK
0.0703%
65
WhiteBIT
LINK-EUR$22.69
0.0068299 Eth
$332,831.00
14,666.790 LINK
0.0647%
66
OKX
LINK-USDC$22.67
0.0068213 Eth
$295,423.00
12,752.985 LINK
0.0562%
67
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.67
0.0068254 Eth
$286,876.00
293,700.783 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.2952%
68
BitDelta
LINK-USDT$22.67
0.0068208 Eth
$268,577.00
11,545.000 LINK
0.0509%
69
Coinbase Exchange
LINK-BTC$22.66
0.0068194 Eth
$266,382.00
11,755.890 LINK
0.0518%
70
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.51
0.0067728 Eth
$264,949.00
11,643.434 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0513%
71
LATOKEN
LINK-BTC$22.53
0.0067939 Eth
$260,616.00
11,568.144 LINK
0.0510%
72
Bitkub
LINK-THB$22.70
0.0068275 Eth
$254,838.00
11,228.493 LINK
0.0495%
73
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$22.57
0.0067930 Eth
$250,671.00
19,320.051 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0852%
74
Gemini
LINK-USD$22.66
0.0068179 Eth
$245,567.00
10,838.031 LINK
0.0478%
75
Bitci TR
LINK-TRY$22.80
0.0068626 Eth
$236,260.00
10,130.841 LINK
0.0447%
76
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.67
0.0068233 Eth
$203,226.00
8,724.543 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0385%
77
PointPay
LINK-BTC$22.67
0.0068214 Eth
$203,131.00
8,844.595 LINK
0.0390%
78
Hotcoin
LINK-BTC$22.67
0.0068156 Eth
$176,709.00
7,794.740 LINK
0.0344%
79
BYDFi
LINK-USDC$22.60
0.0068109 Eth
$167,497.00
7,411.910 LINK
0.0327%
80
Binance US
LINK-USDT$22.59
0.0068059 Eth
$163,990.00
7,257.999 LINK
0.0320%
81
BitStorage
LINK-ETH$22.61
0.0068061 Eth
$156,514.00
6,922.060 LINK
0.0305%
82
BitMart
LINK-ETH$22.65
0.0068125 Eth
$152,412.00
6,730.260 LINK
0.0297%
83
KuCoin
LINK-USDC$22.60
0.0068024 Eth
$127,360.00
5,634.246 LINK
0.0248%
84
OKX
LINK-EUR$22.49
0.0067662 Eth
$112,776.00
4,894.340 LINK
0.0216%
85
Kanga
LINK-PLN$22.57
0.0068023 Eth
$108,385.00
0.000 LINK
0.0000%
86
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.59
0.0067997 Eth
$106,870.00
4,699.722 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0207%
87
Bitso
LINK-USD$22.63
0.0068100 Eth
$102,295.00
4,520.276 LINK
0.0199%
88
Coinbase Exchange
LINK-ETH$22.63
0.0068093 Eth
$100,965.00
4,461.990 LINK
0.0197%
89
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$22.68
0.0068251 Eth
$80,930.00
83,257.717 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3672%
90
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$22.68
0.0068257 Eth
$75,715.00
3,262.479 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0144%
91
KuCoin
LINK-BTC$22.62
0.0068073 Eth
$74,531.00
3,294.750 LINK
0.0145%
92
Coins.ph
LINK-PHP$22.54
0.0067910 Eth
$69,438.00
2,955.755 LINK
0.0130%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.53
0.0067818 Eth
$65,756.00
2,922.210 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0129%
94
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$22.68
0.0068264 Eth
$63,565.00
2,778.683 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0123%
95
Hotcoin
LINK-ETH$22.52
0.0068003 Eth
$61,425.00
2,727.310 LINK
0.0120%
96
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.52
0.0067794 Eth
$48,724.00
2,082.070 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0092%
97
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$22.68
0.0068251 Eth
$44,700.00
1,931.060 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0085%
98
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$22.57
0.0067930 Eth
$36,009.00
2,761.869 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0122%
99
Kanga
LINK-USDT$22.62
0.0068152 Eth
$28,672.00
0.000 LINK
0.0000%
100
Ace
LINK-USDT$22.57
0.0068061 Eth
$3,752.13
161.330 LINK
0.0007%

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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