ETH Price: $3,315.87 (+2.58%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

732,432 ( 0.025%)

Market

Price

$24.88 @ 0.007503 ETH (+0.55%)

Onchain Market Cap

$24,880,000,000.00

Circulating Supply Market Cap

$15,876,836,982.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x0da9d9ecea7235c999764e34f08499ca424c0177
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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 22518.18% |ETH 0.0003846 1850.86%

Market

Volume (24H):$968,448,127.00
Market Capitalization:$15,876,836,982.00
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$24.70
0.0074353 Eth
$137,383,833.00
5,436,346.670 LINK
23.1629%
2
Coinbase Exchange
LINK-USD$24.73
0.0074508 Eth
$55,216,859.00
2,233,240.000 LINK
9.5153%
3
Bybit
LINK-USDT$24.74
0.0074544 Eth
$46,410,642.00
1,840,162.003 LINK
7.8405%
4
P2B
LINK-USDT$24.71
0.0074319 Eth
$27,697,334.00
1,120,719.680 LINK
4.7751%
5
OKX
LINK-USDT$24.72
0.0074482 Eth
$21,580,234.00
851,393.312 LINK
3.6276%
6
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.93
0.0075059 Eth
$18,261,478.00
719,835.271 0X514910771AF9CA656AF840DFF83E8264ECF986CA
3.0670%
7
Gate.io
LINK-USDT$24.75
0.0074560 Eth
$18,176,255.00
720,141.460 LINK
3.0683%
8
DigiFinex
LINK-USDT$24.70
0.0074347 Eth
$17,315,941.00
701,128.240 LINK
2.9873%
9
MEXC
LINK-USDT$24.66
0.0074306 Eth
$13,966,898.00
566,428.440 LINK
2.4134%
10
XT.COM
LINK-USDT$24.70
0.0074358 Eth
$13,683,403.00
541,812.650 LINK
2.3085%
11
Azbit
LINK-USDT$24.72
0.0074345 Eth
$13,413,613.00
530,959.864 LINK
2.2623%
12
HTX
LINK-USDT$24.68
0.0074295 Eth
$12,116,500.00
484,482.070 LINK
2.0643%
13
Coinstore
LINK-USDT$24.69
0.0074399 Eth
$11,685,352.00
463,616.190 LINK
1.9753%
14
Bitunix
LINK-USDT$24.71
0.0074374 Eth
$10,412,336.00
421,540.180 LINK
1.7961%
15
Binance
LINK-USDC$24.69
0.0074323 Eth
$9,724,343.00
384,694.090 LINK
1.6391%
16
Binance
LINK-FDUSD$24.67
0.0074252 Eth
$8,578,716.00
340,751.340 LINK
1.4519%
17
CoinW
LINK-USDT$24.92
0.0074764 Eth
$8,392,972.00
336,850.650 LINK
1.4352%
18
KuCoin
LINK-USDT$24.72
0.0074483 Eth
$8,263,590.00
334,282.075 LINK
1.4243%
19
BYDFi
LINK-USDT$24.71
0.0074385 Eth
$7,347,845.00
297,366.500 LINK
1.2670%
20
LATOKEN
LINK-USDT$24.68
0.0074282 Eth
$6,743,906.00
273,301.973 LINK
1.1645%
21
LBank
LINK-USDT$24.69
0.0074327 Eth
$6,571,686.00
266,157.800 LINK
1.1340%
22
Kraken
LINK-USD$24.70
0.0074446 Eth
$6,240,012.00
252,598.126 LINK
1.0763%
23
BTSE
LINK-USDT$24.70
0.0074356 Eth
$5,841,695.00
236,509.426 LINK
1.0077%
24
QMall
LINK-USDT$24.71
0.0074315 Eth
$5,444,117.00
215,278.600 LINK
0.9172%
25
Hotcoin
LINK-USDT$24.69
0.0074355 Eth
$5,425,476.00
219,742.906 LINK
0.9363%
26
Bitvavo
LINK-EUR$24.70
0.0074360 Eth
$5,397,807.00
218,522.992 LINK
0.9311%
27
Dex-Trade
LINK-USDT$24.68
0.0074366 Eth
$4,171,615.00
169,043.070 LINK
0.7202%
28
FMCPAY
LINK-USDT$24.70
0.0074355 Eth
$4,080,429.00
162,585.066 LINK
0.6927%
29
Coinbase Exchange
LINK-EUR$24.72
0.0074405 Eth
$3,880,044.00
156,985.890 LINK
0.6689%
30
CoinEx
LINK-USDT$24.68
0.0074308 Eth
$3,234,483.00
127,884.415 LINK
0.5449%
31
Biconomy.com
LINK-USDT$24.71
0.0074442 Eth
$2,620,106.00
104,128.850 LINK
0.4437%
32
Bitstamp
LINK-USD$24.70
0.0074355 Eth
$2,487,626.00
100,713.613 LINK
0.4291%
33
PointPay
LINK-USDT$24.66
0.0074237 Eth
$2,191,464.00
86,680.121 LINK
0.3693%
34
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.66
0.0074228 Eth
$2,067,953.00
82,193.036 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.3502%
35
FMCPAY
LINK-ETH$24.76
0.0074471 Eth
$1,812,877.00
71,663.520 LINK
0.3053%
36
FMCPAY
LINK-BTC$24.91
0.0074697 Eth
$1,631,264.00
66,523.100 LINK
0.2834%
37
Coinbase Exchange
LINK-GBP$24.67
0.0074278 Eth
$1,614,176.00
65,420.700 LINK
0.2787%
38
Phemex
LINK-USDT$24.72
0.0074301 Eth
$1,477,677.00
59,769.630 LINK
0.2547%
39
EXMO
LINK-USDT$24.79
0.0074679 Eth
$1,399,952.00
56,482.748 LINK
0.2407%
40
Binance
LINK-TRY$24.73
0.0074533 Eth
$1,393,932.00
55,227.480 LINK
0.2353%
41
tanX
LINK-USDC$24.80
0.0074567 Eth
$1,263,509.00
50,355.470 LINK
0.2146%
42
Bybit
LINK-USDC$24.64
0.0074269 Eth
$1,195,493.00
47,182.377 LINK
0.2010%
43
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$24.74
0.0074488 Eth
$1,076,038.00
42,661.865 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1818%
44
BitStorage
LINK-USDT$24.67
0.0074342 Eth
$1,070,686.00
43,408.760 LINK
0.1850%
45
Kraken
LINK-USDT$24.66
0.0074329 Eth
$1,012,436.00
41,048.436 LINK
0.1749%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.73
0.0074440 Eth
$991,984.00
39,157.696 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1668%
47
EarnBIT
LINK-USDT$24.65
0.0074281 Eth
$990,980.00
39,134.233 LINK
0.1667%
48
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.71
0.0074382 Eth
$886,434.00
74,096.198 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.3157%
49
Trubit
LINK-USDT$24.66
0.0074305 Eth
$880,222.00
35,230.980 LINK
0.1501%
50
Bitbank
LINK-JPY$24.70
0.0074443 Eth
$863,059.00
34,943.452 LINK
0.1489%
51
Binance
LINK-EUR$24.71
0.0074298 Eth
$853,266.00
33,759.130 LINK
0.1438%
52
Coinbase Exchange
LINK-USDT$24.68
0.0074297 Eth
$820,827.00
33,257.543 LINK
0.1417%
53
BigONE
LINK-USDT$24.83
0.0074632 Eth
$804,785.00
32,406.830 LINK
0.1381%
54
QMall
LINK-USDC$24.73
0.0074380 Eth
$774,265.00
30,595.010 LINK
0.1304%
55
itBit
LINK-USD$24.69
0.0074327 Eth
$757,582.00
30,683.756 LINK
0.1307%
56
OKX
LINK-USDC$24.68
0.0074367 Eth
$739,137.00
29,270.858 LINK
0.1247%
57
Gemini
LINK-USD$24.64
0.0074169 Eth
$733,190.00
29,758.413 LINK
0.1268%
58
WhiteBIT
LINK-TRY$24.72
0.0074501 Eth
$726,819.00
29,400.470 LINK
0.1253%
59
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.77
0.0074651 Eth
$724,867.00
28,494.878 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1214%
60
HashKey Exchange
LINK-USD$24.91
0.0075043 Eth
$672,373.00
26,806.450 LINK
0.1142%
61
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$24.63
0.0074132 Eth
$634,589.00
25,305.043 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1078%
62
LATOKEN
LINK-BTC$24.67
0.0074260 Eth
$609,341.00
24,701.369 LINK
0.1052%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$24.81
0.0074672 Eth
$600,923.00
24,200.073 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1031%
64
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.81
0.0074699 Eth
$558,389.00
567,814.246 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.4193%
65
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$24.73
0.0074440 Eth
$553,510.00
22,038.518 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0939%
66
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.76
0.0074525 Eth
$488,263.00
19,282.310 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0822%
67
BitDelta
LINK-USDT$24.72
0.0074301 Eth
$459,467.00
18,220.000 LINK
0.0776%
68
GMO Japan
LINK-JPY$24.81
0.0074606 Eth
$397,548.00
16,022.000 LINK
0.0683%
69
Coinbase Exchange
LINK-BTC$24.70
0.0074440 Eth
$393,588.00
15,933.200 LINK
0.0679%
70
WhiteBIT
LINK-BTC$24.62
0.0074200 Eth
$355,107.00
14,421.860 LINK
0.0614%
71
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.74
0.0074362 Eth
$327,588.00
13,009.558 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0554%
72
Coinbase Exchange
LINK-ETH$24.76
0.0074463 Eth
$306,627.00
12,383.150 LINK
0.0528%
73
Kraken
LINK-GBP$24.68
0.0074380 Eth
$300,784.00
12,186.759 LINK
0.0519%
74
BitMart
LINK-BTC$24.71
0.0074398 Eth
$278,263.00
11,259.260 LINK
0.0480%
75
Slex
LINK-ETH$24.69
0.0074358 Eth
$254,433.00
10,094.920 LINK
0.0430%
76
Bitci TR
LINK-TRY$24.88
0.0074797 Eth
$253,071.00
10,132.320 LINK
0.0432%
77
BitStorage
LINK-ETH$24.71
0.0074455 Eth
$249,276.00
10,087.590 LINK
0.0430%
78
PointPay
LINK-BTC$24.68
0.0074305 Eth
$238,037.00
9,604.582 LINK
0.0409%
79
WhiteBIT
LINK-EUR$24.95
0.0074885 Eth
$232,227.00
9,307.190 LINK
0.0397%
80
Bitkub
LINK-THB$24.87
0.0074776 Eth
$214,990.00
8,644.890 LINK
0.0368%
81
Binance US
LINK-USDT$24.69
0.0074402 Eth
$193,591.00
7,842.388 LINK
0.0334%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.69
0.0074334 Eth
$192,935.00
7,710.216 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0329%
83
Hotcoin
LINK-BTC$24.67
0.0074336 Eth
$191,069.00
7,745.710 LINK
0.0330%
84
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$24.79
0.0074692 Eth
$161,317.00
6,381.609 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0272%
85
BYDFi
LINK-USDC$24.78
0.0074506 Eth
$158,344.00
6,388.720 LINK
0.0272%
86
Bitso
LINK-USD$24.75
0.0074565 Eth
$148,703.00
6,008.737 LINK
0.0256%
87
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.88
0.0074912 Eth
$146,223.00
5,736.220 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0244%
88
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$24.66
0.0074228 Eth
$132,425.00
134,484.741 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5730%
89
Mercado Bitcoin
LINK-BRL$24.77
0.0074569 Eth
$129,850.00
5,242.027 LINK
0.0223%
90
CoinTR
LINK-TRY$24.72
0.0074456 Eth
$126,615.00
5,070.640 LINK
0.0216%
91
Uniswap V3 (Ethereum)
0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.72
0.0074341 Eth
$117,170.00
166,623.354 0XA95C5EBB86E0DE73B4FB8C47A45B792CFEA28C23
0.7099%
92
KuCoin
LINK-USDC$24.64
0.0074231 Eth
$110,505.00
4,485.329 LINK
0.0191%
93
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$24.67
0.0074273 Eth
$107,066.00
4,353.486 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0185%
94
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$24.66
0.0074238 Eth
$105,398.00
107,265.246 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4570%
95
BitMart
LINK-ETH$24.70
0.0074351 Eth
$82,212.00
3,328.620 LINK
0.0142%
96
BTCMarkets
LINK-AUD$24.75
0.0074517 Eth
$64,966.00
2,624.551 LINK
0.0112%
97
Hotcoin
LINK-ETH$24.71
0.0074461 Eth
$60,358.00
2,442.710 LINK
0.0104%
98
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$24.94
0.0075070 Eth
$60,324.00
5,025.949 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0214%
99
Dex-Trade
LINK-ETH$25.15
0.0075590 Eth
$32,063.00
1,274.800 LINK
0.0054%
100
HashKey Global
LINK-USDT$24.74
0.0074409 Eth
$14,925.23
597.254 LINK
0.0025%

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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