ETH Price: $3,488.81 (+2.17%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,093 ( 0.079%)

Market

Price

$25.44 @ 0.007292 ETH (+3.76%)

Onchain Market Cap

$25,440,000,000.00

Circulating Supply Market Cap

$16,059,037,459.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
1,198.5 LINK

Value
$30,489.84 ( ~8.7393 Eth) [0.0001%]
0x647a979a74c7186c53beb6861abc11fde62d1e0a
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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 23027.27% |ETH 0.0003846 1796%

Market

Volume (24H):$1,740,883,056.00
Market Capitalization:$16,059,037,459.00
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$25.29
0.0072530 Eth
$88,322,828.00
3,491,848.970 LINK
11.7764%
2
WhiteBIT
LINK-USDT$25.34
0.0072651 Eth
$67,394,491.00
2,659,608.490 LINK
8.9696%
3
Upbit
LINK-KRW$25.85
0.0074093 Eth
$61,993,301.00
2,398,243.970 LINK
8.0882%
4
MEXC
LINK-USDT$25.31
0.0072584 Eth
$50,216,417.00
1,983,900.300 LINK
6.6908%
5
Bitget
LINK-USDT$25.32
0.0072579 Eth
$47,807,455.00
1,938,703.418 LINK
6.5384%
6
Bybit
LINK-USDT$25.34
0.0072637 Eth
$39,764,606.00
1,612,657.324 LINK
5.4388%
7
OKX
LINK-USDT$25.31
0.0072559 Eth
$31,188,376.00
1,268,121.966 LINK
4.2768%
8
XT.COM
LINK-USDT$25.36
0.0072699 Eth
$24,559,580.00
999,575.570 LINK
3.3711%
9
CoinW
LINK-USDT$25.32
0.0072612 Eth
$21,764,302.00
859,481.720 LINK
2.8986%
10
WEEX
LINK-USDT$25.41
0.0072675 Eth
$21,090,455.00
859,425.410 LINK
2.8984%
11
FameEX
LINK-USDT$25.32
0.0072565 Eth
$20,386,585.00
829,615.260 LINK
2.7979%
12
Azbit
LINK-USDT$25.32
0.0072576 Eth
$20,152,991.00
820,112.545 LINK
2.7659%
13
Coinstore
LINK-USDT$25.40
0.0072660 Eth
$17,088,567.00
696,388.660 LINK
2.3486%
14
Bitunix
LINK-USDT$25.33
0.0072628 Eth
$16,755,956.00
661,165.240 LINK
2.2298%
15
HTX
LINK-USDT$25.30
0.0072526 Eth
$13,301,193.00
544,162.338 LINK
1.8352%
16
BYDFi
LINK-USDT$25.46
0.0072923 Eth
$11,798,887.00
463,428.260 LINK
1.5629%
17
Binance
LINK-FDUSD$25.29
0.0072491 Eth
$11,362,368.00
462,267.170 LINK
1.5590%
18
BTSE
LINK-USDT$25.34
0.0072631 Eth
$10,386,131.00
409,877.482 LINK
1.3823%
19
KuCoin
LINK-USDT$25.30
0.0072537 Eth
$9,939,646.00
392,831.467 LINK
1.3248%
20
LATOKEN
LINK-USDT$25.30
0.0072556 Eth
$9,855,012.00
389,478.318 LINK
1.3135%
21
Kraken
LINK-USD$25.33
0.0072614 Eth
$9,632,453.00
380,289.105 LINK
1.2825%
22
Coinbase Exchange
LINK-GBP$25.33
0.0072652 Eth
$9,498,851.00
374,955.970 LINK
1.2646%
23
Biconomy.com
LINK-USDT$25.34
0.0072633 Eth
$8,846,285.00
360,089.310 LINK
1.2144%
24
QMall
LINK-USDT$25.45
0.0072819 Eth
$8,418,552.00
342,475.036 LINK
1.1550%
25
Dex-Trade
LINK-USDT$25.51
0.0073020 Eth
$7,021,833.00
275,307.760 LINK
0.9285%
26
Hotcoin
LINK-USDT$25.31
0.0072591 Eth
$6,157,626.00
243,269.580 LINK
0.8204%
27
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.36
0.0072683 Eth
$5,326,434.00
213,015.321 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.7184%
28
Bitvavo
LINK-EUR$25.39
0.0072797 Eth
$5,028,784.00
198,085.264 LINK
0.6681%
29
Coinbase Exchange
LINK-EUR$25.37
0.0072722 Eth
$3,868,793.00
152,506.290 LINK
0.5143%
30
FMCPAY
LINK-USDT$25.34
0.0072643 Eth
$3,675,760.00
149,112.892 LINK
0.5029%
31
CoinEx
LINK-USDT$25.41
0.0072856 Eth
$3,414,275.00
138,194.183 LINK
0.4661%
32
PointPay
LINK-USDT$25.33
0.0072623 Eth
$3,312,218.00
134,750.504 LINK
0.4545%
33
Dcoin
LINK-USDT$25.42
0.0072744 Eth
$3,100,287.00
121,952.000 LINK
0.4113%
34
BingX
LINK-USDT$25.32
0.0072579 Eth
$3,035,576.00
123,341.570 LINK
0.4160%
35
EXMO
LINK-USDT$25.35
0.0072654 Eth
$2,880,447.00
113,638.998 LINK
0.3833%
36
WhiteBIT
LINK-BTC$25.34
0.0072651 Eth
$2,490,822.00
98,311.210 LINK
0.3316%
37
Coinbase Exchange
LINK-USDT$25.30
0.0072522 Eth
$2,449,559.00
96,815.220 LINK
0.3265%
38
Phemex
LINK-USDT$25.32
0.0072610 Eth
$2,238,411.00
88,397.930 LINK
0.2981%
39
WhiteBIT
LINK-TRY$25.56
0.0073039 Eth
$2,150,342.00
84,141.500 LINK
0.2838%
40
BitMart
LINK-USDT$25.35
0.0072698 Eth
$1,945,847.00
76,756.820 LINK
0.2589%
41
FMCPAY
LINK-ETH$25.32
0.0072618 Eth
$1,836,001.00
73,872.000 LINK
0.2491%
42
EarnBIT
LINK-USDT$25.44
0.0072827 Eth
$1,734,155.00
70,447.447 LINK
0.2376%
43
BitStorage
LINK-USDT$25.33
0.0072640 Eth
$1,718,976.00
67,856.670 LINK
0.2288%
44
FMCPAY
LINK-BTC$25.32
0.0072606 Eth
$1,694,356.00
67,399.923 LINK
0.2273%
45
tanX
LINK-USDC$25.41
0.0072857 Eth
$1,402,461.00
57,249.790 LINK
0.1931%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.33
0.0072625 Eth
$1,347,855.00
53,937.829 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1819%
47
Binance
LINK-TRY$25.52
0.0073143 Eth
$1,293,836.00
52,091.240 LINK
0.1757%
48
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.51
0.0073162 Eth
$1,213,442.00
48,816.235 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1646%
49
Bybit
LINK-USDC$25.33
0.0072605 Eth
$1,166,001.00
47,214.786 LINK
0.1592%
50
Bitbank
LINK-JPY$25.36
0.0072720 Eth
$1,137,147.00
44,841.126 LINK
0.1512%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.39
0.0072779 Eth
$1,083,665.00
43,064.185 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1452%
52
Koinpark
LINK-USDT$25.32
0.0072591 Eth
$1,081,206.00
42,699.713 LINK
0.1440%
53
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$25.37
0.0072741 Eth
$1,014,344.00
68,931.721 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2325%
54
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$25.36
0.0072727 Eth
$919,822.00
36,817.015 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1242%
55
BigONE
LINK-USDT$25.29
0.0072513 Eth
$895,139.00
35,397.870 LINK
0.1194%
56
WhiteBIT
LINK-EUR$25.34
0.0072653 Eth
$881,752.00
34,801.140 LINK
0.1174%
57
Gemini
LINK-USD$25.35
0.0072648 Eth
$852,879.00
33,650.085 LINK
0.1135%
58
GMO Japan
LINK-JPY$25.46
0.0073006 Eth
$851,847.00
33,458.200 LINK
0.1128%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$25.39
0.0072776 Eth
$845,612.00
34,239.598 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1155%
60
Kraken
LINK-USDT$25.32
0.0072600 Eth
$844,264.00
33,338.163 LINK
0.1124%
61
Binance
LINK-EUR$25.48
0.0072832 Eth
$809,003.00
32,756.340 LINK
0.1105%
62
KuCoin
LINK-USDC$25.32
0.0072585 Eth
$747,698.00
29,530.924 LINK
0.0996%
63
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.30
0.0072557 Eth
$746,438.00
29,855.058 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1007%
64
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$25.31
0.0072535 Eth
$518,741.00
504,536.040 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.7016%
65
WEEX
LINK-USDC$25.32
0.0072604 Eth
$501,316.00
19,800.562 LINK
0.0668%
66
itBit
LINK-USD$25.30
0.0072530 Eth
$496,159.00
19,611.027 LINK
0.0661%
67
BitMart
LINK-BTC$25.39
0.0072803 Eth
$488,879.00
19,256.560 LINK
0.0649%
68
HashKey Exchange
LINK-USD$25.45
0.0072888 Eth
$458,362.00
18,612.484 LINK
0.0628%
69
Slex
LINK-BTC$25.33
0.0072648 Eth
$440,641.00
17,498.600 LINK
0.0590%
70
Coinbase Exchange
LINK-ETH$25.34
0.0072668 Eth
$429,826.00
16,961.450 LINK
0.0572%
71
Slex
LINK-ETH$25.47
0.0072964 Eth
$424,865.00
17,102.460 LINK
0.0577%
72
Bitkub
LINK-THB$25.52
0.0073178 Eth
$424,637.00
16,640.472 LINK
0.0561%
73
Coinbase Exchange
LINK-BTC$25.28
0.0072479 Eth
$406,965.00
16,096.140 LINK
0.0543%
74
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.37
0.0072737 Eth
$391,819.00
15,902.908 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0536%
75
LATOKEN
LINK-BTC$25.34
0.0072638 Eth
$387,710.00
15,301.202 LINK
0.0516%
76
OKX
LINK-USDC$25.31
0.0072564 Eth
$351,655.00
14,314.285 LINK
0.0483%
77
Coinone
LINK-KRW$25.40
0.0072794 Eth
$334,468.00
13,169.860 LINK
0.0444%
78
Binance US
LINK-USDT$25.37
0.0072747 Eth
$317,923.00
12,529.701 LINK
0.0423%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$25.33
0.0072596 Eth
$290,837.00
11,598.989 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0391%
80
PointPay
LINK-BTC$25.42
0.0072779 Eth
$290,342.00
11,536.002 LINK
0.0389%
81
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$25.35
0.0072688 Eth
$262,370.00
10,510.227 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0354%
82
BitMart
LINK-ETH$25.39
0.0072808 Eth
$242,424.00
9,548.060 LINK
0.0322%
83
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$25.37
0.0072725 Eth
$226,040.00
9,036.681 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0305%
84
BitStorage
LINK-ETH$25.41
0.0072745 Eth
$223,097.00
8,779.210 LINK
0.0296%
85
KuCoin
LINK-BTC$25.32
0.0072583 Eth
$211,636.00
8,358.916 LINK
0.0282%
86
Hotcoin
LINK-BTC$25.32
0.0072620 Eth
$202,336.00
7,989.740 LINK
0.0269%
87
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$25.36
0.0072683 Eth
$196,684.00
191,591.042 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.6461%
88
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$25.34
0.0072638 Eth
$196,096.00
7,957.158 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0268%
89
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.51
0.0073161 Eth
$187,433.00
7,512.313 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0253%
90
HTX
LINK-BTC$25.52
0.0073157 Eth
$183,687.00
7,248.305 LINK
0.0244%
91
Kraken
LINK-GBP$25.37
0.0072737 Eth
$178,469.00
7,034.084 LINK
0.0237%
92
Bitso
LINK-USD$25.30
0.0072507 Eth
$166,515.00
6,582.677 LINK
0.0222%
93
BTCMarkets
LINK-AUD$25.60
0.0073290 Eth
$161,558.00
6,310.337 LINK
0.0213%
94
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$25.41
0.0072831 Eth
$143,545.00
5,704.767 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0192%
95
Bitexen
LINK-TRY$25.26
0.0072419 Eth
$130,800.00
5,178.365 LINK
0.0175%
96
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$25.52
0.0073143 Eth
$101,386.00
4,073.877 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0137%
97
Kanga
LINK-PLN$25.40
0.0072791 Eth
$96,967.00
0.000 LINK
0.0000%
98
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$25.40
0.0072814 Eth
$75,272.00
3,012.447 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0102%
99
Mercado Bitcoin
LINK-BRL$25.58
0.0073323 Eth
$74,003.00
2,893.248 LINK
0.0098%
100
Hotcoin
LINK-ETH$25.38
0.0072779 Eth
$73,071.00
2,878.770 LINK
0.0097%

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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