ETH Price: $3,126.42 (-2.69%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

731,746 ( -0.027%)

Market

Price

$23.19 @ 0.007417 ETH (-5.62%)

Onchain Market Cap

$23,190,000,000.00

Circulating Supply Market Cap

$14,811,186,139.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
116.50215182 LINK

Value
$2,701.68 ( ~0.864143623393419 Eth) [0.0000%]
0xd58F655ea0A233f8B0C1A67b69425f0F4062af8D
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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 20981.82% |ETH 0.0003846 1828.5%

Market

Volume (24H):$754,686,319.00
Market Capitalization:$14,811,186,139.00
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$23.15
0.0074247 Eth
$92,675,438.00
3,948,010.410 LINK
20.0837%
2
Coinbase Exchange
LINK-USD$23.15
0.0074178 Eth
$52,384,738.00
2,262,839.650 LINK
11.5112%
3
Bybit
LINK-USDT$23.17
0.0074197 Eth
$36,147,306.00
1,546,528.183 LINK
7.8673%
4
Slex
LINK-USDT$23.17
0.0074205 Eth
$22,371,191.00
951,531.950 LINK
4.8405%
5
P2B
LINK-USDT$23.11
0.0074122 Eth
$18,644,310.00
806,683.820 LINK
4.1036%
6
OKX
LINK-USDT$23.18
0.0074235 Eth
$13,397,400.00
570,752.906 LINK
2.9034%
7
HTX
LINK-USDT$23.16
0.0074175 Eth
$13,097,691.00
556,953.146 LINK
2.8332%
8
Gate.io
LINK-USDT$23.17
0.0074234 Eth
$12,037,664.00
514,634.780 LINK
2.6180%
9
DigiFinex
LINK-USDT$23.19
0.0074271 Eth
$11,709,567.00
504,833.830 LINK
2.5681%
10
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.09
0.0073926 Eth
$10,927,256.00
469,856.211 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.3902%
11
XT.COM
LINK-USDT$23.17
0.0074276 Eth
$9,255,976.00
394,221.420 LINK
2.0054%
12
Azbit
LINK-USDT$23.16
0.0074243 Eth
$9,141,811.00
389,398.688 LINK
1.9809%
13
Kraken
LINK-USD$23.15
0.0074148 Eth
$9,088,308.00
392,525.531 LINK
1.9968%
14
MEXC
LINK-USDT$23.13
0.0074193 Eth
$8,939,839.00
386,454.650 LINK
1.9659%
15
Coinstore
LINK-USDT$23.15
0.0074220 Eth
$8,371,194.00
356,891.140 LINK
1.8155%
16
KuCoin
LINK-USDT$23.15
0.0074139 Eth
$8,195,599.00
354,014.854 LINK
1.8009%
17
Binance
LINK-FDUSD$23.12
0.0074044 Eth
$7,863,801.00
335,709.310 LINK
1.7078%
18
Bitunix
LINK-USDT$23.15
0.0074240 Eth
$7,145,611.00
308,759.430 LINK
1.5707%
19
Binance
LINK-USDC$23.14
0.0074210 Eth
$6,622,935.00
282,569.200 LINK
1.4374%
20
CoinW
LINK-USDT$23.14
0.0074200 Eth
$6,160,832.00
266,280.230 LINK
1.3546%
21
BTSE
LINK-USDT$23.17
0.0074298 Eth
$5,801,622.00
250,359.144 LINK
1.2736%
22
BYDFi
LINK-USDT$23.20
0.0074212 Eth
$5,166,976.00
222,739.380 LINK
1.1331%
23
Hotcoin
LINK-USDT$23.15
0.0074189 Eth
$4,934,647.00
213,125.510 LINK
1.0842%
24
Coinbase Exchange
LINK-EUR$23.13
0.0074168 Eth
$4,644,378.00
200,829.930 LINK
1.0216%
25
LATOKEN
LINK-USDT$23.16
0.0074261 Eth
$4,602,483.00
198,709.045 LINK
1.0108%
26
Bitvavo
LINK-EUR$23.18
0.0074350 Eth
$3,941,416.00
170,010.848 LINK
0.8649%
27
QMall
LINK-USDT$23.13
0.0074165 Eth
$3,823,758.00
162,919.445 LINK
0.8288%
28
FMCPAY
LINK-USDT$23.16
0.0074166 Eth
$3,701,748.00
158,182.594 LINK
0.8047%
29
Dex-Trade
LINK-USDT$23.19
0.0074176 Eth
$2,964,641.00
127,845.270 LINK
0.6504%
30
CoinEx
LINK-USDT$23.15
0.0074259 Eth
$2,208,490.00
94,116.844 LINK
0.4788%
31
Biconomy.com
LINK-USDT$23.16
0.0074119 Eth
$2,142,424.00
91,159.850 LINK
0.4637%
32
Coinbase Exchange
LINK-USDT$23.18
0.0074304 Eth
$2,102,737.00
90,732.661 LINK
0.4616%
33
Coinbase Exchange
LINK-GBP$23.13
0.0074177 Eth
$1,943,370.00
84,024.100 LINK
0.4274%
34
FMCPAY
LINK-ETH$23.11
0.0074000 Eth
$1,578,647.00
67,871.680 LINK
0.3453%
35
FMCPAY
LINK-BTC$23.15
0.0074256 Eth
$1,547,839.00
66,004.800 LINK
0.3358%
36
PointPay
LINK-USDT$23.14
0.0074224 Eth
$1,512,558.00
64,485.267 LINK
0.3280%
37
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.00
0.0073738 Eth
$1,303,908.00
56,359.332 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2867%
38
Phemex
LINK-USDT$23.10
0.0074104 Eth
$1,274,768.00
55,174.350 LINK
0.2807%
39
WhiteBIT
LINK-TRY$23.19
0.0074177 Eth
$1,243,676.00
53,637.960 LINK
0.2729%
40
tanX
LINK-USDC$23.18
0.0074227 Eth
$1,096,790.00
46,537.440 LINK
0.2367%
41
EXMO
LINK-USDT$23.19
0.0074256 Eth
$981,061.00
42,310.756 LINK
0.2152%
42
WhiteBIT
LINK-BTC$23.20
0.0074248 Eth
$976,643.00
42,092.590 LINK
0.2141%
43
Gemini
LINK-USD$23.18
0.0074224 Eth
$901,963.00
38,910.912 LINK
0.1979%
44
Binance
LINK-TRY$23.19
0.0074321 Eth
$815,447.00
34,558.100 LINK
0.1758%
45
Trubit
LINK-USDT$23.16
0.0074130 Eth
$773,638.00
33,032.200 LINK
0.1680%
46
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.21
0.0074408 Eth
$758,696.00
32,751.890 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1666%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.14
0.0074115 Eth
$736,144.00
31,762.418 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1616%
48
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.26
0.0074483 Eth
$710,483.00
30,486.231 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1551%
49
Bybit
LINK-USDC$23.11
0.0074014 Eth
$706,180.00
30,193.200 LINK
0.1536%
50
BigONE
LINK-USDT$23.09
0.0074046 Eth
$674,447.00
29,213.990 LINK
0.1486%
51
Binance
LINK-EUR$23.21
0.0074248 Eth
$669,238.00
28,224.860 LINK
0.1436%
52
Coinbase Exchange
LINK-BTC$23.16
0.0074250 Eth
$665,730.00
28,742.960 LINK
0.1462%
53
Bitbank
LINK-JPY$23.27
0.0074506 Eth
$658,818.00
28,317.909 LINK
0.1441%
54
EarnBIT
LINK-USDT$23.13
0.0074166 Eth
$642,643.00
27,402.359 LINK
0.1394%
55
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.22
0.0074348 Eth
$603,445.00
25,559.036 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1300%
56
WhiteBIT
LINK-EUR$23.20
0.0074424 Eth
$566,177.00
24,399.750 LINK
0.1241%
57
OKX
LINK-USDC$23.16
0.0074169 Eth
$539,355.00
22,942.475 LINK
0.1167%
58
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.14
0.0074105 Eth
$534,320.00
22,954.755 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1168%
59
QMall
LINK-USDC$23.12
0.0074156 Eth
$529,739.00
22,586.924 LINK
0.1149%
60
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.10
0.0073962 Eth
$516,698.00
45,579.651 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2319%
61
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.10
0.0074062 Eth
$423,441.00
18,162.287 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0924%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.11
0.0074006 Eth
$420,859.00
427,262.332 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1735%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.17
0.0074187 Eth
$400,773.00
17,212.043 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0876%
64
GMO Japan
LINK-JPY$23.20
0.0074304 Eth
$391,790.00
16,886.100 LINK
0.0859%
65
HashKey Exchange
LINK-USD$23.16
0.0074272 Eth
$381,752.00
16,157.815 LINK
0.0822%
66
itBit
LINK-USD$23.17
0.0074242 Eth
$375,872.00
16,222.345 LINK
0.0825%
67
Slex
LINK-ETH$23.11
0.0074010 Eth
$374,509.00
16,091.130 LINK
0.0819%
68
Tokpie
LINK-USDT$23.28
0.0074655 Eth
$372,094.00
15,984.520 LINK
0.0813%
69
ProBit Global
LINK-BTC$23.18
0.0074328 Eth
$333,113.00
14,373.457 LINK
0.0731%
70
LATOKEN
LINK-BTC$23.15
0.0074221 Eth
$319,357.00
13,795.596 LINK
0.0702%
71
Coinbase Exchange
LINK-ETH$23.12
0.0074053 Eth
$317,831.00
13,744.830 LINK
0.0699%
72
BitDelta
LINK-USDT$23.14
0.0074224 Eth
$297,217.00
12,633.000 LINK
0.0643%
73
BitMart
LINK-BTC$23.15
0.0074124 Eth
$269,912.00
11,660.060 LINK
0.0593%
74
Bitso
LINK-USD$23.16
0.0074158 Eth
$234,504.00
10,127.023 LINK
0.0515%
75
Bitci TR
LINK-TRY$23.14
0.0074013 Eth
$233,780.00
9,915.614 LINK
0.0504%
76
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.16
0.0074215 Eth
$201,325.00
8,776.772 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0446%
77
Hotcoin
LINK-BTC$23.15
0.0074190 Eth
$180,920.00
7,813.840 LINK
0.0397%
78
CoinTR
LINK-TRY$23.19
0.0074383 Eth
$169,917.00
7,210.040 LINK
0.0367%
79
BitStorage
LINK-ETH$23.11
0.0074089 Eth
$161,491.00
6,988.880 LINK
0.0356%
80
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.10
0.0074103 Eth
$158,644.00
6,739.413 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0343%
81
BYDFi
LINK-USDC$23.12
0.0074030 Eth
$153,810.00
6,652.950 LINK
0.0338%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.12
0.0074026 Eth
$151,498.00
6,464.229 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0329%
83
KuCoin
LINK-USDC$23.12
0.0074030 Eth
$136,630.00
5,910.528 LINK
0.0301%
84
OKX
LINK-EUR$23.15
0.0074133 Eth
$135,086.00
5,724.569 LINK
0.0291%
85
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.00
0.0073738 Eth
$128,594.00
129,702.798 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.6598%
86
PointPay
LINK-BTC$23.16
0.0074131 Eth
$124,280.00
5,323.915 LINK
0.0271%
87
Kanga
LINK-PLN$23.28
0.0074651 Eth
$118,634.00
0.000 LINK
0.0000%
88
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.10
0.0074038 Eth
$97,655.00
99,434.661 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.5058%
89
Bitkub
LINK-THB$23.17
0.0074311 Eth
$90,883.00
3,922.318 LINK
0.0200%
90
BitMart
LINK-ETH$23.12
0.0074030 Eth
$86,452.00
3,739.420 LINK
0.0190%
91
Binance US
LINK-USDT$23.13
0.0074079 Eth
$83,019.00
3,588.974 LINK
0.0183%
92
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$23.08
0.0073951 Eth
$74,106.00
3,081.012 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0157%
93
Mercado Bitcoin
LINK-BRL$23.16
0.0074241 Eth
$73,556.00
3,176.173 LINK
0.0162%
94
BTCMarkets
LINK-AUD$23.36
0.0074914 Eth
$62,075.00
2,656.846 LINK
0.0135%
95
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.11
0.0074065 Eth
$59,922.00
2,538.684 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0129%
96
Hotcoin
LINK-ETH$23.16
0.0074214 Eth
$55,958.00
2,415.950 LINK
0.0123%
97
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.18
0.0074315 Eth
$51,879.00
4,546.059 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0231%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.08
0.0074018 Eth
$51,655.00
2,222.475 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0113%
99
OKX
LINK-USD$23.19
0.0074249 Eth
$39,012.00
1,649.560 LINK
0.0084%
100
Dex-Trade
LINK-ETH$23.26
0.0074268 Eth
$22,382.00
962.100 LINK
0.0049%

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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