ETH Price: $2,416.71 (+0.47%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

721,381 ( -0.006%)

Market

Price

$11.31 @ 0.004680 ETH (+2.30%)

Onchain Market Cap

$11,310,000,000.00

Circulating Supply Market Cap

$7,086,015,610.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
91.47786253 LINK

Value
$1,034.61 ( ~0.428107599565087 Eth) [0.0000%]
0xcbdb1e240a0670ba77b512bb9d2bdbf90ff318c2
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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 10181.82% |ETH 0.0003846 1116.85%

Market

Volume (24H):$256,274,033.00
Market Capitalization:$7,086,015,610.00
Circulating Supply:626,849,971.00 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
LBank
LINK-USDT$11.30
0.0046731 Eth
$28,053,856.00
2,482,783.920 LINK
19.9190%
2
Binance
LINK-USDT$11.32
0.0046810 Eth
$12,521,747.00
1,113,457.570 LINK
8.9331%
3
Coinbase Exchange
LINK-USD$11.31
0.0046756 Eth
$9,921,671.00
877,402.820 LINK
7.0393%
4
Bitget
LINK-USDT$11.31
0.0046764 Eth
$8,854,729.00
787,085.397 LINK
6.3147%
5
Bybit
LINK-USDT$11.30
0.0046759 Eth
$7,422,814.00
659,278.947 LINK
5.2893%
6
HTX
LINK-USDT$11.31
0.0046749 Eth
$7,389,243.00
656,617.309 LINK
5.2680%
7
WhiteBIT
LINK-USDT$11.30
0.0046762 Eth
$5,675,074.00
502,056.880 LINK
4.0279%
8
Websea
LINK-USDT$11.32
0.0046799 Eth
$5,456,877.00
0.000 LINK
0.0000%
9
Azbit
LINK-USDT$11.32
0.0046798 Eth
$5,227,108.00
464,659.660 LINK
3.7279%
10
Biconomy.com
LINK-USDT$11.32
0.0046781 Eth
$4,607,224.00
409,474.140 LINK
3.2852%
11
BVOX
LINK-USDT$11.30
0.0046743 Eth
$3,150,578.00
280,050.460 LINK
2.2468%
12
WEEX
LINK-USDT$11.33
0.0046828 Eth
$2,786,012.00
247,361.950 LINK
1.9846%
13
P2B
LINK-USDT$11.32
0.0046795 Eth
$2,705,696.00
239,066.460 LINK
1.9180%
14
Poloniex
LINK-USDT$11.31
0.0046736 Eth
$2,491,821.00
221,586.524 LINK
1.7778%
15
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$11.25
0.0046529 Eth
$2,187,766.00
194,316.386 0X514910771AF9CA656AF840DFF83E8264ECF986CA
1.5590%
16
Slex
LINK-USDT$11.31
0.0046737 Eth
$2,160,598.00
192,118.160 LINK
1.5413%
17
OKX
LINK-USDT$11.31
0.0046766 Eth
$1,990,676.00
177,145.550 LINK
1.4212%
18
AscendEX (BitMax)
LINK-USDT$11.36
0.0046963 Eth
$1,697,520.00
149,477.900 LINK
1.1992%
19
DigiFinex
LINK-USDT$11.30
0.0046746 Eth
$1,607,457.00
142,215.010 LINK
1.1410%
20
Trubit
LINK-USDT$11.31
0.0046783 Eth
$1,464,618.00
129,989.900 LINK
1.0429%
21
Deepcoin
LINK-USDT$11.33
0.0046836 Eth
$1,359,288.00
128,027.500 LINK
1.0271%
22
KuCoin
LINK-USDT$11.31
0.0046773 Eth
$1,283,166.00
113,491.757 LINK
0.9105%
23
C-Patex
LINK-USDT$11.30
0.0046744 Eth
$1,280,016.00
113,252.160 LINK
0.9086%
24
Oceanex
LINK-USDT$11.32
0.0046795 Eth
$1,187,766.00
104,926.870 LINK
0.8418%
25
XT.COM
LINK-USDT$11.32
0.0046804 Eth
$1,110,060.00
98,699.090 LINK
0.7918%
26
Toobit
LINK-USDT$11.31
0.0046768 Eth
$1,100,761.00
97,897.340 LINK
0.7854%
27
Binance
LINK-BTC$11.32
0.0046787 Eth
$1,015,535.00
90,384.920 LINK
0.7251%
28
CoinW
LINK-USDT$11.30
0.0046751 Eth
$991,340.00
87,696.530 LINK
0.7036%
29
Azbit
LINK-ETH$11.32
0.0046784 Eth
$955,165.00
84,632.806 LINK
0.6790%
30
Crypto.com Exchange
LINK-USDT$11.32
0.0046786 Eth
$886,451.00
78,338.870 LINK
0.6285%
31
FMCPAY
LINK-USDT$11.31
0.0046762 Eth
$798,078.00
71,000.844 LINK
0.5696%
32
Gate.io
LINK-USDT$11.31
0.0046771 Eth
$790,345.00
70,217.550 LINK
0.5633%
33
BloFin
LINK-USDT$11.31
0.0046737 Eth
$726,614.00
64,592.190 LINK
0.5182%
34
BTSE
LINK-USDT$11.30
0.0046741 Eth
$704,628.00
62,364.324 LINK
0.5003%
35
BYDFi
LINK-USDT$11.27
0.0046621 Eth
$606,768.00
53,846.160 LINK
0.4320%
36
FMFW.io
LINK-USDT$11.31
0.0046738 Eth
$586,702.00
51,878.580 LINK
0.4162%
37
HitBTC
LINK-USDT$11.31
0.0046763 Eth
$583,378.00
51,868.640 LINK
0.4161%
38
Hotcoin
LINK-USDT$11.30
0.0046731 Eth
$581,706.00
51,481.390 LINK
0.4130%
39
tanX
LINK-USDC$11.26
0.0046544 Eth
$566,511.00
50,352.650 LINK
0.4040%
40
Bitunix
LINK-USDT$11.31
0.0046774 Eth
$548,187.00
48,457.380 LINK
0.3888%
41
Kraken
LINK-USDT$11.31
0.0046796 Eth
$515,103.00
45,536.781 LINK
0.3653%
42
Niza Global
LINK-USDT$11.31
0.0046750 Eth
$514,969.00
45,536.781 LINK
0.3653%
43
Bitvavo
LINK-EUR$11.29
0.0046671 Eth
$503,888.00
44,633.370 LINK
0.3581%
44
Kraken
LINK-USD$11.32
0.0046835 Eth
$501,527.00
44,299.929 LINK
0.3554%
45
Bit2Me
LINK-USDT$11.31
0.0046776 Eth
$500,137.00
44,626.045 LINK
0.3580%
46
FameEX
LINK-USDT$11.31
0.0046782 Eth
$499,097.00
44,374.282 LINK
0.3560%
47
Niza Global
LINK-USD$11.32
0.0046774 Eth
$497,718.00
44,198.929 LINK
0.3546%
48
FMCPAY
LINK-ETH$11.32
0.0046799 Eth
$467,155.00
41,422.240 LINK
0.3323%
49
FMCPAY
LINK-BTC$11.31
0.0046735 Eth
$436,734.00
38,909.500 LINK
0.3122%
50
Coinbase Exchange
LINK-USDT$11.27
0.0046603 Eth
$382,012.00
33,901.458 LINK
0.2720%
51
CoinEx
LINK-USDT$11.31
0.0046750 Eth
$369,584.00
32,882.291 LINK
0.2638%
52
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.27
0.0046591 Eth
$352,378.00
31,398.337 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2519%
53
Crypto.com Exchange
LINK-USD$11.32
0.0046784 Eth
$346,044.00
30,582.780 LINK
0.2454%
54
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.31
0.0046775 Eth
$314,289.00
28,117.486 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2256%
55
WhiteBIT
LINK-BTC$11.32
0.0046812 Eth
$258,835.00
22,874.300 LINK
0.1835%
56
MEXC
LINK-USDT$11.33
0.0046833 Eth
$233,940.00
20,649.080 LINK
0.1657%
57
Bitstamp
LINK-EUR$11.29
0.0046683 Eth
$228,683.00
20,256.229 LINK
0.1625%
58
EXMO
LINK-USDT$11.32
0.0046787 Eth
$209,988.00
18,557.396 LINK
0.1489%
59
Pionex
LINK-USDT$11.31
0.0046763 Eth
$203,100.00
18,058.950 LINK
0.1449%
60
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.21
0.0046353 Eth
$202,856.00
18,185.870 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1459%
61
PointPay
LINK-USDT$11.31
0.0046767 Eth
$201,980.00
17,950.227 LINK
0.1440%
62
BitMart
LINK-BTC$11.31
0.0046767 Eth
$181,110.00
16,014.740 LINK
0.1285%
63
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.29
0.0046698 Eth
$173,729.00
15,453.049 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1240%
64
BigONE
LINK-USDT$11.32
0.0046796 Eth
$155,325.00
13,720.920 LINK
0.1101%
65
WhiteBIT
LINK-EUR$11.31
0.0046776 Eth
$144,872.00
12,812.540 LINK
0.1028%
66
Bithumb
LINK-KRW$11.36
0.0046981 Eth
$142,549.00
12,548.672 LINK
0.1007%
67
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.32
0.0046821 Eth
$139,815.00
12,407.051 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0995%
68
LATOKEN
LINK-BTC$11.32
0.0046780 Eth
$130,348.00
11,515.509 LINK
0.0924%
69
Hotcoin
LINK-ETH$11.30
0.0046753 Eth
$123,392.00
10,915.110 LINK
0.0876%
70
LATOKEN
LINK-USDT$11.31
0.0046783 Eth
$113,397.00
10,027.428 LINK
0.0804%
71
BitDelta
LINK-USDT$11.32
0.0046804 Eth
$112,578.00
10,013.000 LINK
0.0803%
72
Bit2Me
LINK-EUR$11.27
0.0046602 Eth
$110,354.00
9,800.069 LINK
0.0786%
73
Hotcoin
LINK-BTC$11.30
0.0046717 Eth
$95,566.00
8,460.250 LINK
0.0679%
74
Coinbase Exchange
LINK-ETH$11.33
0.0046837 Eth
$91,883.00
8,111.490 LINK
0.0651%
75
Bitbank
LINK-JPY$11.34
0.0046872 Eth
$91,336.00
8,057.697 LINK
0.0646%
76
Nominex
LINK-USDT$11.33
0.0046818 Eth
$81,967.00
7,235.313 LINK
0.0580%
77
Slex
LINK-ETH$11.29
0.0046679 Eth
$73,982.00
6,541.590 LINK
0.0525%
78
Slex
LINK-BTC$11.32
0.0046781 Eth
$69,082.00
6,150.000 LINK
0.0493%
79
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.31
0.0046784 Eth
$39,573.00
39,306.628 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.3154%
80
Bitget
LINK-EUR$11.33
0.0046854 Eth
$37,488.00
3,327.010 LINK
0.0267%
81
GMO Japan
LINK-JPY$11.29
0.0046668 Eth
$35,716.00
3,163.700 LINK
0.0254%
82
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.31
0.0046783 Eth
$26,018.00
2,326.865 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0187%
83
EXMO
LINK-BTC$11.32
0.0046824 Eth
$23,882.00
2,108.882 LINK
0.0169%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$11.30
0.0046715 Eth
$21,470.00
1,902.376 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0153%
85
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.31
0.0046783 Eth
$19,946.11
1,777.346 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0143%
86
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.21
0.0046354 Eth
$19,701.42
19,650.656 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.1577%
87
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$11.29
0.0046703 Eth
$19,155.54
19,050.072 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.1528%
88
TokoCrypto
LINK-USDT$11.31
0.0046773 Eth
$18,755.42
1,658.399 LINK
0.0133%
89
Nonkyc.io
LINK-BTC$11.34
0.0046898 Eth
$14,407.44
1,282.599 LINK
0.0103%
90
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.31
0.0046769 Eth
$8,322.68
739.172 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0059%
91
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$11.28
0.0046642 Eth
$4,160.78
371.197 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0030%
92
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8$11.24
0.0046541 Eth
$3,331.61
284.635 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0023%
93
Uniswap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955$11.24
0.0046493 Eth
$2,187.65
194.614 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0016%
94
CoinEx
LINK-USDC$11.26
0.0046557 Eth
$2,155.26
191.445 LINK
0.0015%
95
CoinEx
LINK-BTC$11.28
0.0046628 Eth
$2,137.50
190.255 LINK
0.0015%
96
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$11.29
0.0046724 Eth
$1,149.34
102.307 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0008%
97
PancakeSwap V3 (Arbitrum)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$11.27
0.0046583 Eth
$1,123.55
100.211 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0008%
98
Quickswap
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$11.32
0.0046791 Eth
$796.91
62.214 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0005%
99
CEX.IO
LINK-USDT$11.32
0.0046811 Eth
$161.06
14.336 LINK
0.0001%
100
Uniswap V3 (Arbitrum One)
0X912CE59144191C1204E64559FE8253A0E49E6548-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$11.20
0.0046338 Eth
$154.07
277.472 0X912CE59144191C1204E64559FE8253A0E49E6548
0.0022%

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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