ETH Price: $3,398.89 (+2.49%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

726,552 ( -0.009%)

Market

Price

$23.95 @ 0.007046 ETH (+10.59%)

Onchain Market Cap

$23,950,000,000.00

Circulating Supply Market Cap

$15,151,625,512.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
12.73287012 LINK

Value
$304.95 ( ~0.0897203947682158 Eth) [0.0000%]
0xEA1cF9d17A1cd3E6E60dF8a2483502e21FFa712f
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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 21672.73% |ETH 0.0003846 1732.03%

Market

Volume (24H):$1,443,098,464.00
Market Capitalization:$15,151,625,512.00
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
Coinbase Exchange
LINK-USD$24.08
0.0071039 Eth
$96,802,481.00
4,020,203.520 LINK
14.4583%
2
Upbit
LINK-KRW$24.38
0.0071876 Eth
$70,046,562.00
2,872,676.147 LINK
10.3314%
3
Bybit
LINK-USDT$24.10
0.0071030 Eth
$38,665,424.00
1,674,219.137 LINK
6.0212%
4
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.93
0.0070639 Eth
$34,656,946.00
1,488,967.720 0X514910771AF9CA656AF840DFF83E8264ECF986CA
5.3550%
5
Gate.io
LINK-USDT$24.10
0.0071076 Eth
$22,664,309.00
980,830.552 LINK
3.5275%
6
FameEX
LINK-USDT$23.90
0.0070691 Eth
$20,046,783.00
871,441.249 LINK
3.1341%
7
XT.COM
LINK-USDT$23.89
0.0070658 Eth
$20,046,409.00
871,419.990 LINK
3.1340%
8
Azbit
LINK-USDT$23.89
0.0070650 Eth
$19,794,413.00
860,205.997 LINK
3.0937%
9
Coinstore
LINK-USDT$23.95
0.0070829 Eth
$16,641,361.00
723,533.900 LINK
2.6021%
10
Binance
LINK-FDUSD$24.01
0.0071079 Eth
$16,524,030.00
713,731.610 LINK
2.5669%
11
Bitunix
LINK-USDT$23.90
0.0070691 Eth
$15,703,234.00
657,101.030 LINK
2.3632%
12
MEXC
LINK-USDT$24.07
0.0071201 Eth
$15,616,408.00
648,859.710 LINK
2.3336%
13
HTX
LINK-USDT$24.11
0.0071122 Eth
$15,520,111.00
670,117.809 LINK
2.4100%
14
Bithumb
LINK-KRW$24.38
0.0071915 Eth
$14,772,186.00
605,821.401 LINK
2.1788%
15
CoinW
LINK-USDT$24.09
0.0071060 Eth
$14,228,393.00
590,540.470 LINK
2.1238%
16
KuCoin
LINK-USDT$24.10
0.0071078 Eth
$14,198,871.00
589,259.805 LINK
2.1192%
17
Kraken
LINK-USD$24.08
0.0070983 Eth
$11,783,057.00
489,309.509 LINK
1.7598%
18
BYDFi
LINK-USDT$24.01
0.0070924 Eth
$11,709,413.00
487,707.280 LINK
1.7540%
19
LBank
LINK-USDT$24.06
0.0071033 Eth
$10,180,631.00
423,108.490 LINK
1.5217%
20
Binance
LINK-USDC$24.10
0.0071078 Eth
$10,051,684.00
435,155.070 LINK
1.5650%
21
LATOKEN
LINK-USDT$23.99
0.0070915 Eth
$9,773,978.00
407,347.308 LINK
1.4650%
22
Hotcoin
LINK-USDT$24.12
0.0071126 Eth
$8,198,817.00
339,970.710 LINK
1.2227%
23
QMall
LINK-USDT$23.99
0.0070898 Eth
$8,003,127.00
347,345.075 LINK
1.2492%
24
BTSE
LINK-USDT$24.00
0.0070953 Eth
$7,790,023.00
324,528.816 LINK
1.1671%
25
Dex-Trade
LINK-USDT$24.02
0.0071012 Eth
$6,531,421.00
271,870.690 LINK
0.9778%
26
Bitvavo
LINK-EUR$24.02
0.0070915 Eth
$5,908,157.00
245,951.834 LINK
0.8845%
27
Coinbase Exchange
LINK-EUR$24.05
0.0071033 Eth
$5,373,572.00
223,467.670 LINK
0.8037%
28
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.97
0.0070665 Eth
$4,449,219.00
190,645.566 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6856%
29
CoinEx
LINK-USDT$24.01
0.0071008 Eth
$4,368,014.00
188,409.153 LINK
0.6776%
30
FMCPAY
LINK-USDT$24.10
0.0071090 Eth
$4,250,254.00
183,518.939 LINK
0.6600%
31
Kraken
LINK-EUR$24.08
0.0070992 Eth
$3,073,611.00
127,620.441 LINK
0.4590%
32
PointPay
LINK-USDT$24.00
0.0070977 Eth
$3,072,552.00
133,345.811 LINK
0.4796%
33
Coinbase Exchange
LINK-GBP$24.01
0.0070979 Eth
$3,071,983.00
127,931.720 LINK
0.4601%
34
Biconomy.com
LINK-USDT$24.07
0.0071048 Eth
$3,029,794.00
131,058.248 LINK
0.4713%
35
Bitstamp
LINK-USD$24.02
0.0070804 Eth
$2,303,296.00
95,890.769 LINK
0.3449%
36
Phemex
LINK-USDT$23.98
0.0070916 Eth
$2,274,852.00
94,873.240 LINK
0.3412%
37
EXMO
LINK-USDT$24.12
0.0071147 Eth
$1,993,950.00
82,669.925 LINK
0.2973%
38
Binance
LINK-TRY$23.95
0.0070812 Eth
$1,935,558.00
83,892.180 LINK
0.3017%
39
FMCPAY
LINK-ETH$24.04
0.0070905 Eth
$1,923,137.00
81,739.200 LINK
0.2940%
40
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.92
0.0070618 Eth
$1,919,281.00
79,332.217 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2853%
41
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.89
0.0070523 Eth
$1,764,408.00
75,525.207 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2716%
42
FMCPAY
LINK-BTC$24.07
0.0071010 Eth
$1,756,719.00
74,425.700 LINK
0.2677%
43
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.95
0.0070708 Eth
$1,668,929.00
111,837.515 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.4022%
44
BitStorage
LINK-USDT$24.09
0.0071038 Eth
$1,660,818.00
68,952.950 LINK
0.2480%
45
Bitbank
LINK-JPY$23.97
0.0070897 Eth
$1,564,773.00
65,288.597 LINK
0.2348%
46
Binance
LINK-ETH$23.89
0.0070635 Eth
$1,558,505.00
66,710.280 LINK
0.2399%
47
itBit
LINK-USD$24.07
0.0070990 Eth
$1,513,886.00
62,895.119 LINK
0.2262%
48
Kraken
LINK-USDT$24.05
0.0070882 Eth
$1,488,642.00
61,906.503 LINK
0.2226%
49
Bybit
LINK-USDC$24.10
0.0071050 Eth
$1,386,874.00
60,006.160 LINK
0.2158%
50
Coinbase Exchange
LINK-USDT$24.07
0.0071063 Eth
$1,253,717.00
52,082.994 LINK
0.1873%
51
BigONE
LINK-USDT$24.00
0.0070985 Eth
$1,221,216.00
50,881.250 LINK
0.1830%
52
Binance
LINK-EUR$23.89
0.0070647 Eth
$1,192,786.00
51,703.800 LINK
0.1859%
53
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.87
0.0070410 Eth
$1,178,239.00
50,397.585 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1813%
54
EarnBIT
LINK-USDT$23.98
0.0070943 Eth
$1,149,954.00
49,750.538 LINK
0.1789%
55
Tokpie
LINK-USDT$24.14
0.0071409 Eth
$1,116,848.00
46,269.690 LINK
0.1664%
56
Coinbase Exchange
LINK-ETH$23.95
0.0070783 Eth
$1,073,661.00
44,835.800 LINK
0.1612%
57
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.98
0.0070675 Eth
$1,001,285.00
43,617.229 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1569%
58
Gemini
LINK-USD$24.06
0.0070921 Eth
$937,636.00
38,971.196 LINK
0.1402%
59
Trubit
LINK-USDT$23.90
0.0070677 Eth
$927,826.00
40,007.170 LINK
0.1439%
60
OKX
LINK-USDC$24.12
0.0071107 Eth
$868,499.00
37,259.551 LINK
0.1340%
61
Bitkub
LINK-THB$23.89
0.0070574 Eth
$853,862.00
35,740.199 LINK
0.1285%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.89
0.0070523 Eth
$846,400.00
816,308.171 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.9358%
63
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.99
0.0070761 Eth
$816,111.00
776,914.997 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.7941%
64
HashKey Exchange
LINK-USD$24.05
0.0071122 Eth
$805,486.00
34,739.371 LINK
0.1249%
65
LATOKEN
LINK-BTC$24.06
0.0070936 Eth
$780,470.00
32,431.861 LINK
0.1166%
66
QMall
LINK-USDC$24.07
0.0071215 Eth
$767,963.00
33,180.358 LINK
0.1193%
67
Kraken
LINK-XBT$24.07
0.0070957 Eth
$710,137.00
29,500.490 LINK
0.1061%
68
Coinbase Exchange
LINK-BTC$24.08
0.0071053 Eth
$657,005.00
27,279.880 LINK
0.0981%
69
GMO Japan
LINK-JPY$24.01
0.0070983 Eth
$653,347.00
27,206.600 LINK
0.0978%
70
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.98
0.0070695 Eth
$618,660.00
26,808.891 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0964%
71
Kraken
LINK-ETH$24.04
0.0070862 Eth
$574,794.00
23,910.081 LINK
0.0860%
72
Coinone
LINK-KRW$24.36
0.0071795 Eth
$512,832.00
21,055.401 LINK
0.0757%
73
Slex
LINK-BTC$23.93
0.0070762 Eth
$425,591.00
18,078.100 LINK
0.0650%
74
XT.COM
LINK-ETH$24.04
0.0070925 Eth
$419,428.00
17,888.000 LINK
0.0643%
75
Slex
LINK-ETH$23.92
0.0070736 Eth
$400,122.00
17,060.820 LINK
0.0614%
76
BitStorage
LINK-ETH$23.98
0.0071001 Eth
$400,047.00
16,679.610 LINK
0.0600%
77
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.96
0.0070741 Eth
$379,835.00
16,221.702 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0583%
78
bitcastle
LINK-USDT$24.09
0.0071049 Eth
$375,069.00
16,267.810 LINK
0.0585%
79
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.97
0.0070768 Eth
$369,852.00
16,111.355 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0579%
80
BitDelta
LINK-USDT$23.99
0.0070950 Eth
$361,558.00
15,676.000 LINK
0.0564%
81
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.97
0.0070666 Eth
$331,039.00
14,156.497 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0509%
82
BitMart
LINK-BTC$23.91
0.0070578 Eth
$329,295.00
13,773.800 LINK
0.0495%
83
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.00
0.0070844 Eth
$310,596.00
13,442.945 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0483%
84
PointPay
LINK-BTC$24.02
0.0070968 Eth
$295,483.00
12,522.287 LINK
0.0450%
85
BTCMarkets
LINK-AUD$24.23
0.0071653 Eth
$286,647.00
11,830.567 LINK
0.0425%
86
Kraken
LINK-GBP$23.89
0.0070414 Eth
$265,323.00
11,107.028 LINK
0.0399%
87
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$24.04
0.0071071 Eth
$257,162.00
11,101.384 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0399%
88
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$24.05
0.0070990 Eth
$247,291.00
10,554.874 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0380%
89
BYDFi
LINK-USDC$23.91
0.0070710 Eth
$243,943.00
10,203.250 LINK
0.0367%
90
Bitso
LINK-USD$23.95
0.0070923 Eth
$243,260.00
10,155.881 LINK
0.0365%
91
Binance US
LINK-USDT$23.90
0.0070507 Eth
$240,864.00
10,078.516 LINK
0.0362%
92
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$24.03
0.0070953 Eth
$235,195.00
10,211.660 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0367%
93
Foxbit
LINK-BRL$23.98
0.0070676 Eth
$227,201.00
10,025.819 LINK
0.0361%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.86
0.0070452 Eth
$226,971.00
9,440.106 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0340%
95
KuCoin
LINK-USDC$24.08
0.0071044 Eth
$218,218.00
9,060.453 LINK
0.0326%
96
Binance
LINK-BNB$23.88
0.0070674 Eth
$205,490.00
8,879.668 LINK
0.0319%
97
KuCoin
LINK-BTC$23.99
0.0070751 Eth
$151,845.00
6,330.758 LINK
0.0228%
98
BitMart
LINK-ETH$24.05
0.0070933 Eth
$151,357.00
6,294.260 LINK
0.0226%
99
Mercado Bitcoin
LINK-BRL$23.91
0.0070529 Eth
$125,945.00
5,266.645 LINK
0.0189%
100
Independent Reserve
LINK-AUD$24.00
0.0070848 Eth
$71,691.00
2,987.298 LINK
0.0107%

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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