ETH Price: $3,314.73 (-5.00%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,119 (0.00%)

Market

Price

$23.93 @ 0.007219 ETH (-5.32%)

Onchain Market Cap

$23,930,000,000.00

Circulating Supply Market Cap

$15,117,181,982.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
zywuu.eth
Balance
0.265246078987654111 LINK

Value
$6.35 ( ~0.00191568896669715 Eth) [0.0000%]
0x4034fcabed962d8f507edc73a51f43b9fa6bccef
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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 21654.55% |ETH 0.0003846 1777.02%

Market

Volume (24H):$1,175,645,193.00
Market Capitalization:$15,117,181,982.00
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$24.17
0.0072992 Eth
$84,630,401.00
3,500,885.300 LINK
14.0893%
2
Bybit
LINK-USDT$24.17
0.0073017 Eth
$46,172,582.00
1,912,994.776 LINK
7.6988%
3
P2B
LINK-USDT$24.01
0.0072576 Eth
$34,433,536.00
1,434,244.410 LINK
5.7721%
4
Slex
LINK-USDT$23.87
0.0072400 Eth
$24,496,175.00
1,014,634.650 LINK
4.0834%
5
OKX
LINK-USDT$24.14
0.0072914 Eth
$22,002,418.00
908,925.997 LINK
3.6580%
6
DigiFinex
LINK-USDT$24.13
0.0072797 Eth
$21,627,947.00
896,170.370 LINK
3.6066%
7
Gate.io
LINK-USDT$24.16
0.0072936 Eth
$17,892,538.00
741,375.820 LINK
2.9837%
8
HTX
LINK-USDT$24.16
0.0072952 Eth
$17,719,212.00
734,788.444 LINK
2.9572%
9
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.95
0.0072355 Eth
$17,555,253.00
730,359.083 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.9393%
10
XT.COM
LINK-USDT$24.02
0.0072658 Eth
$17,271,479.00
714,713.470 LINK
2.8764%
11
Azbit
LINK-USDT$24.08
0.0072757 Eth
$17,102,730.00
707,693.702 LINK
2.8481%
12
Binance
LINK-FDUSD$24.17
0.0072893 Eth
$16,187,583.00
670,676.860 LINK
2.6991%
13
MEXC
LINK-USDT$24.06
0.0072776 Eth
$14,931,755.00
620,567.150 LINK
2.4975%
14
Coinstore
LINK-USDT$23.85
0.0072110 Eth
$14,925,628.00
618,076.990 LINK
2.4874%
15
Bitunix
LINK-USDT$24.08
0.0072821 Eth
$12,957,021.00
538,273.300 LINK
2.1663%
16
CoinW
LINK-USDT$23.98
0.0072545 Eth
$11,394,632.00
475,076.390 LINK
1.9119%
17
Kraken
LINK-USD$24.17
0.0073010 Eth
$10,569,642.00
437,335.468 LINK
1.7601%
18
BYDFi
LINK-USDT$23.97
0.0072690 Eth
$9,556,185.00
398,753.920 LINK
1.6048%
19
KuCoin
LINK-USDT$24.16
0.0072982 Eth
$8,779,841.00
363,423.319 LINK
1.4626%
20
BTSE
LINK-USDT$24.12
0.0072887 Eth
$8,721,145.00
361,537.375 LINK
1.4550%
21
LATOKEN
LINK-USDT$24.11
0.0072848 Eth
$8,595,835.00
356,461.147 LINK
1.4346%
22
LBank
LINK-USDT$24.04
0.0072518 Eth
$8,540,100.00
355,223.590 LINK
1.4296%
23
Binance
LINK-USDC$24.19
0.0072963 Eth
$7,959,141.00
330,206.230 LINK
1.3289%
24
QMall
LINK-USDT$24.12
0.0072900 Eth
$6,959,179.00
288,196.990 LINK
1.1598%
25
Hotcoin
LINK-USDT$23.98
0.0072522 Eth
$6,362,774.00
265,373.960 LINK
1.0680%
26
Coinbase Exchange
LINK-EUR$24.09
0.0072799 Eth
$6,022,083.00
249,947.250 LINK
1.0059%
27
Coinbase Exchange
LINK-USDT$23.99
0.0072506 Eth
$5,802,018.00
241,867.885 LINK
0.9734%
28
Dex-Trade
LINK-USDT$24.16
0.0072952 Eth
$5,519,053.00
228,431.740 LINK
0.9193%
29
FMCPAY
LINK-USDT$24.01
0.0072756 Eth
$4,360,292.00
180,118.016 LINK
0.7249%
30
Bitvavo
LINK-EUR$23.92
0.0072345 Eth
$4,167,870.00
174,250.613 LINK
0.7013%
31
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.90
0.0072278 Eth
$4,140,355.00
171,641.525 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.6908%
32
CoinEx
LINK-USDT$23.91
0.0072315 Eth
$3,676,909.00
153,034.601 LINK
0.6159%
33
Biconomy.com
LINK-USDT$24.00
0.0072576 Eth
$2,713,002.00
112,206.890 LINK
0.4516%
34
PointPay
LINK-USDT$23.92
0.0072551 Eth
$2,633,961.00
109,080.395 LINK
0.4390%
35
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.93
0.0072382 Eth
$2,027,444.00
83,461.161 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.3359%
36
Phemex
LINK-USDT$23.96
0.0072472 Eth
$1,966,640.00
82,065.140 LINK
0.3303%
37
Coinbase Exchange
LINK-GBP$24.11
0.0072837 Eth
$1,884,017.00
78,156.190 LINK
0.3145%
38
ProBit Global
LINK-USDT$23.95
0.0072547 Eth
$1,853,150.00
77,371.434 LINK
0.3114%
39
FMCPAY
LINK-ETH$24.14
0.0072814 Eth
$1,835,417.00
75,933.760 LINK
0.3056%
40
FMCPAY
LINK-BTC$23.96
0.0072555 Eth
$1,747,673.00
71,955.700 LINK
0.2896%
41
EXMO
LINK-USDT$24.16
0.0072949 Eth
$1,622,405.00
67,153.024 LINK
0.2703%
42
Kraken
LINK-EUR$24.03
0.0072599 Eth
$1,556,333.00
64,760.645 LINK
0.2606%
43
BitStorage
LINK-USDT$24.14
0.0072947 Eth
$1,360,003.00
56,332.640 LINK
0.2267%
44
Bitbank
LINK-JPY$24.08
0.0072803 Eth
$1,320,693.00
54,838.680 LINK
0.2207%
45
Binance
LINK-ETH$24.17
0.0072904 Eth
$1,224,768.00
50,571.170 LINK
0.2035%
46
Kraken
LINK-USDT$24.17
0.0073007 Eth
$1,222,658.00
50,591.922 LINK
0.2036%
47
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.88
0.0072205 Eth
$1,168,413.00
48,386.538 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1947%
48
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.87
0.0072173 Eth
$1,164,081.00
48,317.790 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1945%
49
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.88
0.0072219 Eth
$1,147,210.00
47,026.497 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1893%
50
Binance
LINK-TRY$24.34
0.0073415 Eth
$1,129,138.00
46,455.270 LINK
0.1870%
51
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.95
0.0072355 Eth
$1,047,046.00
74,064.464 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2981%
52
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.92
0.0072255 Eth
$1,046,879.00
1,055,469.488 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
4.2477%
53
EarnBIT
LINK-USDT$23.94
0.0072386 Eth
$1,027,192.00
42,446.265 LINK
0.1708%
54
Coinbase Exchange
LINK-ETH$24.02
0.0072641 Eth
$1,023,334.00
42,609.070 LINK
0.1715%
55
Binance
LINK-EUR$24.04
0.0072520 Eth
$982,243.00
40,879.750 LINK
0.1645%
56
tanX
LINK-USDC$24.01
0.0072579 Eth
$954,010.00
39,426.340 LINK
0.1587%
57
Gemini
LINK-USD$24.07
0.0072722 Eth
$937,086.00
38,927.232 LINK
0.1567%
58
Bybit
LINK-USDC$24.17
0.0073027 Eth
$904,681.00
37,462.138 LINK
0.1508%
59
Nonkyc.io
LINK-USDT$23.92
0.0072360 Eth
$889,047.00
37,067.735 LINK
0.1492%
60
itBit
LINK-USD$23.96
0.0072472 Eth
$881,895.00
36,806.953 LINK
0.1481%
61
BigONE
LINK-USDT$23.92
0.0072492 Eth
$878,528.00
36,721.370 LINK
0.1478%
62
Trubit
LINK-USDT$24.03
0.0072673 Eth
$855,772.00
35,518.870 LINK
0.1429%
63
LATOKEN
LINK-BTC$24.11
0.0072831 Eth
$802,410.00
33,282.934 LINK
0.1339%
64
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.86
0.0072160 Eth
$670,518.00
678,904.176 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.7322%
65
QMall
LINK-USDC$24.00
0.0072585 Eth
$655,737.00
27,232.706 LINK
0.1096%
66
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$24.03
0.0072601 Eth
$602,069.00
24,989.366 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1006%
67
GMO Japan
LINK-JPY$24.00
0.0072565 Eth
$595,518.00
24,812.200 LINK
0.0999%
68
ProBit Global
LINK-BTC$23.97
0.0072509 Eth
$559,890.00
23,354.860 LINK
0.0940%
69
Kraken
LINK-ETH$24.11
0.0072845 Eth
$557,314.00
23,112.023 LINK
0.0930%
70
Bitbegin
LINK-USDT$23.97
0.0072458 Eth
$462,479.00
19,172.165 LINK
0.0772%
71
OKX
LINK-USDC$24.13
0.0072902 Eth
$423,547.00
17,542.511 LINK
0.0706%
72
Coinbase Exchange
LINK-BTC$23.99
0.0072571 Eth
$420,902.00
17,542.510 LINK
0.0706%
73
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.91
0.0072229 Eth
$375,562.00
15,545.366 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0626%
74
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.96
0.0072462 Eth
$368,996.00
15,268.097 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0614%
75
Bitkub
LINK-THB$24.10
0.0072903 Eth
$355,737.00
14,759.068 LINK
0.0594%
76
BitDelta
LINK-USDT$23.93
0.0072370 Eth
$335,133.00
13,872.000 LINK
0.0558%
77
bitcastle
LINK-USDT$24.10
0.0072817 Eth
$323,650.00
13,408.390 LINK
0.0540%
78
Slex
LINK-ETH$23.90
0.0072261 Eth
$320,783.00
13,297.040 LINK
0.0535%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.93
0.0072358 Eth
$304,042.00
12,584.999 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0506%
80
PointPay
LINK-BTC$24.11
0.0072861 Eth
$301,547.00
12,428.154 LINK
0.0500%
81
BitMart
LINK-BTC$24.05
0.0072697 Eth
$283,526.00
11,789.800 LINK
0.0474%
82
BitStorage
LINK-ETH$24.06
0.0072689 Eth
$265,369.00
11,030.820 LINK
0.0444%
83
Bitso
LINK-USD$23.96
0.0072444 Eth
$251,744.00
10,506.362 LINK
0.0423%
84
Hotcoin
LINK-BTC$23.95
0.0072433 Eth
$230,956.00
9,642.200 LINK
0.0388%
85
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.92
0.0072363 Eth
$213,070.00
8,837.843 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0356%
86
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.90
0.0072264 Eth
$209,905.00
8,707.742 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0350%
87
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.95
0.0072355 Eth
$207,004.00
8,548.263 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0344%
88
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.86
0.0072160 Eth
$205,250.00
8,501.881 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0342%
89
BYDFi
LINK-USDC$24.01
0.0072630 Eth
$192,516.00
8,017.050 LINK
0.0323%
90
CEX.IO
LINK-USDT$24.14
0.0072900 Eth
$190,651.00
7,909.394 LINK
0.0318%
91
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.84
0.0072091 Eth
$185,369.00
7,643.350 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0308%
92
Binance US
LINK-USDT$23.96
0.0072603 Eth
$184,836.00
7,714.659 LINK
0.0310%
93
KuCoin
LINK-USDC$24.14
0.0072935 Eth
$183,384.00
7,595.648 LINK
0.0306%
94
Binance
LINK-BNB$23.90
0.0072485 Eth
$179,949.00
7,370.575 LINK
0.0297%
95
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.90
0.0072278 Eth
$179,016.00
180,863.012 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.7279%
96
Kraken
LINK-GBP$23.84
0.0072020 Eth
$174,242.00
7,308.660 LINK
0.0294%
97
Mercado Bitcoin
LINK-BRL$23.88
0.0072153 Eth
$130,277.00
5,455.599 LINK
0.0220%
98
KuCoin
LINK-BTC$24.12
0.0072859 Eth
$124,229.00
5,150.836 LINK
0.0207%
99
BitMart
LINK-ETH$24.07
0.0072597 Eth
$102,775.00
4,270.260 LINK
0.0172%
100
Foxbit
LINK-BRL$24.03
0.0072683 Eth
$60,909.00
2,530.108 LINK
0.0102%

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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