ETH Price: $2,658.33 (-2.94%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

738,014 ( 0.125%)

Market

Price

$17.31 @ 0.006512 ETH (-5.52%)

Onchain Market Cap

$17,310,000,000.00

Circulating Supply Market Cap

$11,039,910,121.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x4dae7b4c62d7c296139523230ff06ec0a583e65a
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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 15636.36% |ETH 0.0003846 1593.19%

Market

Volume (24H):$785,125,411.00
Market Capitalization:$11,039,910,121.00
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
WhiteBIT
LINK-USDT$17.34
0.0065540 Eth
$86,282,066.00
4,976,364.330 LINK
17.1729%
2
Binance
LINK-USDT$17.37
0.0065543 Eth
$82,834,609.00
4,567,325.470 LINK
15.7614%
3
Bybit
LINK-USDT$17.21
0.0064947 Eth
$58,620,949.00
3,257,915.611 LINK
11.2427%
4
Coinbase Exchange
LINK-USD$17.36
0.0065515 Eth
$29,320,330.00
1,688,959.120 LINK
5.8284%
5
Bitget
LINK-USDT$17.36
0.0065497 Eth
$26,956,007.00
1,494,829.314 LINK
5.1585%
6
HTX
LINK-USDT$17.39
0.0065606 Eth
$18,862,536.00
1,040,525.949 LINK
3.5908%
7
P2B
LINK-USDT$17.37
0.0065544 Eth
$14,526,769.00
836,416.650 LINK
2.8864%
8
Gate.io
LINK-USDT$17.36
0.0065520 Eth
$11,800,373.00
648,363.740 LINK
2.2374%
9
OKX
LINK-USDT$17.39
0.0065593 Eth
$11,454,919.00
635,636.087 LINK
2.1935%
10
DigiFinex
LINK-USDT$17.38
0.0065588 Eth
$10,104,181.00
581,269.890 LINK
2.0059%
11
KuCoin
LINK-USDT$17.38
0.0065586 Eth
$8,540,414.00
491,297.979 LINK
1.6954%
12
XT.COM
LINK-USDT$17.36
0.0065575 Eth
$8,149,383.00
449,738.760 LINK
1.5520%
13
MEXC
LINK-EUR$17.36
0.0065628 Eth
$7,584,074.00
436,855.470 LINK
1.5075%
14
Hotcoin
LINK-USDT$17.36
0.0065640 Eth
$7,330,356.00
422,225.630 LINK
1.4571%
15
MEXC
LINK-USDC$17.36
0.0065617 Eth
$7,274,629.00
419,101.270 LINK
1.4463%
16
LBank
LINK-USDT$17.38
0.0065573 Eth
$7,078,860.00
407,323.960 LINK
1.4056%
17
Coinstore
LINK-USDT$17.27
0.0065424 Eth
$6,992,782.00
385,905.080 LINK
1.3317%
18
Binance
LINK-FDUSD$17.46
0.0065876 Eth
$6,605,427.00
361,357.990 LINK
1.2470%
19
Kraken
LINK-USD$17.37
0.0065536 Eth
$6,520,347.00
375,434.062 LINK
1.2956%
20
Binance
LINK-USDC$17.35
0.0065589 Eth
$6,425,245.00
355,415.460 LINK
1.2265%
21
CoinW
LINK-USDT$17.36
0.0065635 Eth
$5,831,889.00
335,946.470 LINK
1.1593%
22
Bitunix
LINK-USDT$17.36
0.0065604 Eth
$5,281,271.00
304,212.570 LINK
1.0498%
23
Azbit
LINK-USDT$17.36
0.0065509 Eth
$4,929,458.00
271,934.625 LINK
0.9384%
24
BYDFi
LINK-USDT$17.37
0.0065552 Eth
$4,443,075.00
255,776.010 LINK
0.8827%
25
BTSE
LINK-USDT$17.35
0.0065589 Eth
$4,180,597.00
240,992.910 LINK
0.8316%
26
LATOKEN
LINK-USDT$17.35
0.0065596 Eth
$3,781,851.00
217,984.362 LINK
0.7522%
27
QMall
LINK-USDT$17.35
0.0065585 Eth
$3,428,892.00
189,206.891 LINK
0.6529%
28
Bitvavo
LINK-EUR$17.38
0.0065705 Eth
$3,186,887.00
183,404.252 LINK
0.6329%
29
FMCPAY
LINK-USDT$17.36
0.0065514 Eth
$2,517,097.00
138,714.003 LINK
0.4787%
30
Dex-Trade
LINK-USDT$17.36
0.0065550 Eth
$2,442,831.00
140,707.547 LINK
0.4856%
31
CoinEx
LINK-USDT$17.31
0.0065523 Eth
$2,370,453.00
133,793.016 LINK
0.4617%
32
Coinbase Exchange
LINK-GBP$17.38
0.0065592 Eth
$2,264,708.00
130,293.110 LINK
0.4496%
33
Biconomy.com
LINK-USDT$17.34
0.0065555 Eth
$1,693,214.00
93,724.690 LINK
0.3234%
34
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.33
0.0065402 Eth
$1,571,841.00
89,392.017 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3085%
35
Coinbase Exchange
LINK-EUR$17.40
0.0065671 Eth
$1,562,153.00
89,766.190 LINK
0.3098%
36
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.34
0.0065438 Eth
$1,501,117.00
85,269.900 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2943%
37
PointPay
LINK-USDT$17.35
0.0065632 Eth
$1,338,583.00
73,749.821 LINK
0.2545%
38
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$17.35
0.0065465 Eth
$1,296,915.00
73,819.710 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2547%
39
FMCPAY
LINK-ETH$17.34
0.0065482 Eth
$1,068,677.00
60,822.400 LINK
0.2099%
40
Bybit
LINK-USDC$17.22
0.0064979 Eth
$1,035,531.00
58,986.913 LINK
0.2036%
41
FMCPAY
LINK-BTC$17.36
0.0065513 Eth
$1,025,665.00
57,548.700 LINK
0.1986%
42
BigONE
LINK-USDT$17.39
0.0065633 Eth
$952,928.00
54,786.840 LINK
0.1891%
43
Binance
LINK-ETH$17.23
0.0065411 Eth
$860,301.00
49,227.200 LINK
0.1699%
44
Phemex
LINK-USDT$17.34
0.0065508 Eth
$806,893.00
46,533.270 LINK
0.1606%
45
Trubit
LINK-USDT$17.34
0.0065508 Eth
$797,818.00
43,898.050 LINK
0.1515%
46
Gemini
LINK-USD$17.34
0.0065423 Eth
$774,464.00
44,664.985 LINK
0.1541%
47
tanX
LINK-USDC$17.37
0.0065559 Eth
$743,730.00
40,834.130 LINK
0.1409%
48
EXMO
LINK-USDT$17.36
0.0065509 Eth
$721,976.00
41,589.751 LINK
0.1435%
49
WhiteBIT
LINK-BTC$17.37
0.0065534 Eth
$713,518.00
41,080.660 LINK
0.1418%
50
LATOKEN
LINK-BTC$17.34
0.0065563 Eth
$703,982.00
40,588.058 LINK
0.1401%
51
Binance
LINK-TRY$17.37
0.0065810 Eth
$665,066.00
36,584.700 LINK
0.1263%
52
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$17.37
0.0065551 Eth
$643,323.00
35,499.887 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1225%
53
BitStorage
LINK-USDT$17.35
0.0065602 Eth
$641,948.00
36,997.230 LINK
0.1277%
54
Tokpie
LINK-USDT$17.32
0.0065664 Eth
$641,670.00
37,052.030 LINK
0.1279%
55
Bitbank
LINK-JPY$17.49
0.0066021 Eth
$560,345.00
32,030.092 LINK
0.1105%
56
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.36
0.0065528 Eth
$557,429.00
587,052.876 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.0259%
57
EarnBIT
LINK-USDT$17.38
0.0065723 Eth
$554,205.00
30,676.283 LINK
0.1059%
58
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$17.37
0.0065530 Eth
$545,227.00
31,228.931 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1078%
59
QMall
LINK-USDC$17.35
0.0065583 Eth
$530,932.00
29,341.360 LINK
0.1013%
60
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.32
0.0065373 Eth
$447,233.00
25,441.019 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0878%
61
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$17.26
0.0065116 Eth
$445,174.00
24,736.552 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0854%
62
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.33
0.0065420 Eth
$444,799.00
50,884.930 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1756%
63
GMO Japan
LINK-JPY$17.36
0.0065557 Eth
$297,243.00
17,119.300 LINK
0.0591%
64
BitMart
LINK-BTC$17.36
0.0065522 Eth
$293,215.00
16,886.440 LINK
0.0583%
65
Hotcoin
LINK-BTC$17.38
0.0065583 Eth
$257,015.00
14,785.950 LINK
0.0510%
66
Mercado Bitcoin
LINK-BRL$17.40
0.0065670 Eth
$256,663.00
14,749.803 LINK
0.0509%
67
Coinbase Exchange
LINK-BTC$17.38
0.0065575 Eth
$245,523.00
14,129.170 LINK
0.0488%
68
BYDFi
LINK-USDC$17.23
0.0065194 Eth
$228,976.00
13,289.270 LINK
0.0459%
69
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$17.29
0.0065237 Eth
$228,336.00
12,588.306 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0434%
70
BitDelta
LINK-USDT$17.37
0.0065544 Eth
$220,267.00
12,152.000 LINK
0.0419%
71
Bitkub
LINK-THB$17.40
0.0065651 Eth
$217,987.00
12,530.710 LINK
0.0432%
72
BitStorage
LINK-ETH$17.34
0.0065482 Eth
$216,016.00
12,455.480 LINK
0.0430%
73
OKX
LINK-USDC$17.38
0.0065557 Eth
$202,103.00
11,193.626 LINK
0.0386%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.34
0.0065437 Eth
$196,891.00
11,220.149 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0387%
75
Bitci TR
LINK-TRY$17.29
0.0065367 Eth
$177,804.00
9,782.550 LINK
0.0338%
76
Slex
LINK-ETH$17.34
0.0065520 Eth
$175,045.00
9,971.580 LINK
0.0344%
77
WhiteBIT
LINK-TRY$17.40
0.0065779 Eth
$168,035.00
9,656.320 LINK
0.0333%
78
bitcastle
LINK-USDT$17.35
0.0065585 Eth
$167,433.00
9,245.700 LINK
0.0319%
79
KuCoin
LINK-USDC$17.37
0.0065521 Eth
$160,096.00
9,218.897 LINK
0.0318%
80
Binance US
LINK-USDT$17.28
0.0065519 Eth
$120,094.00
6,949.975 LINK
0.0240%
81
Bitso
LINK-USD$17.40
0.0065718 Eth
$116,742.00
6,709.303 LINK
0.0232%
82
Uniswap V4 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$17.30
0.0065331 Eth
$113,381.00
120,266.303 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4150%
83
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$17.50
0.0066093 Eth
$110,340.00
6,268.682 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0216%
84
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$17.33
0.0065402 Eth
$108,108.00
113,346.870 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3911%
85
Uniswap V4 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$17.33
0.0065476 Eth
$103,179.00
5,878.937 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0203%
86
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$17.31
0.0065322 Eth
$91,400.00
5,143.329 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0177%
87
KuCoin
LINK-BTC$17.32
0.0065344 Eth
$85,734.00
4,950.261 LINK
0.0171%
88
Gemini
LINK-BTC$17.41
0.0065704 Eth
$81,412.00
4,675.125 LINK
0.0161%
89
PointPay
LINK-BTC$17.36
0.0065504 Eth
$80,653.00
4,531.550 LINK
0.0156%
90
Hotcoin
LINK-ETH$17.30
0.0065654 Eth
$74,171.00
4,287.400 LINK
0.0148%
91
HTX
LINK-BTC$17.34
0.0065433 Eth
$64,100.00
3,655.350 LINK
0.0126%
92
Kanga
LINK-PLN$17.43
0.0065758 Eth
$60,975.00
0.000 LINK
0.0000%
93
Coinbase Exchange
LINK-ETH$17.39
0.0065631 Eth
$52,359.00
3,010.530 LINK
0.0104%
94
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$17.29
0.0065233 Eth
$46,643.00
2,575.279 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0089%
95
Uniswap V4 (Ethereum)
0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48-0X514910771AF9CA656AF840DFF83E8264ECF986CA$17.31
0.0065383 Eth
$44,701.00
46,873.937 0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48
0.1618%
96
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$17.42
0.0065734 Eth
$37,504.00
2,133.240 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0074%
97
Indodax
LINK-IDR$17.45
0.0065982 Eth
$32,342.00
1,853.213 LINK
0.0064%
98
Bitexen
LINK-TRY$17.24
0.0065275 Eth
$32,040.00
1,858.447 LINK
0.0064%
99
Dex-Trade
LINK-ETH$17.33
0.0065442 Eth
$28,411.00
1,639.170 LINK
0.0057%
100
Uniswap V3 (Avalanche)
0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7$17.40
0.0065648 Eth
$23,396.00
1,322.872 0X5947BB275C521040051D82396192181B413227A3
0.0046%

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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