ETH Price: $3,115.93 (-2.40%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

731,901 ( -0.007%)

Market

Price

$23.12 @ 0.007420 ETH (-4.53%)

Onchain Market Cap

$23,120,000,000.00

Circulating Supply Market Cap

$14,789,985,942.00

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Binance Dep: 0xaD315435371238e2d5Cb19848c591D7176ACb645
Balance
0 LINK

Value
$0.00
0xad315435371238e2d5cb19848c591d7176acb645
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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 20918.18% |ETH 0.0003846 1829.28%

Market

Volume (24H):$802,761,541.00
Market Capitalization:$14,789,985,942.00
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$23.25
0.0074589 Eth
$102,753,623.00
4,348,880.210 LINK
20.4740%
2
Coinbase Exchange
LINK-USD$23.09
0.0074087 Eth
$54,115,042.00
2,343,758.590 LINK
11.0342%
3
Bybit
LINK-USDT$23.09
0.0074075 Eth
$39,246,447.00
1,669,054.644 LINK
7.8577%
4
Slex
LINK-USDT$23.29
0.0074690 Eth
$22,578,224.00
953,544.490 LINK
4.4892%
5
P2B
LINK-USDT$23.10
0.0074120 Eth
$20,786,298.00
899,923.760 LINK
4.2367%
6
OKX
LINK-USDT$23.08
0.0074064 Eth
$15,334,929.00
648,492.189 LINK
3.0530%
7
HTX
LINK-USDT$23.09
0.0074091 Eth
$13,884,875.00
586,076.263 LINK
2.7592%
8
Gate.io
LINK-USDT$23.08
0.0074041 Eth
$13,513,827.00
573,934.300 LINK
2.7020%
9
DigiFinex
LINK-USDT$23.07
0.0074041 Eth
$12,787,602.00
554,237.960 LINK
2.6093%
10
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.09
0.0074152 Eth
$11,800,673.00
505,753.164 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.3810%
11
XT.COM
LINK-USDT$23.09
0.0074099 Eth
$10,256,418.00
434,201.980 LINK
2.0442%
12
Azbit
LINK-USDT$23.09
0.0074089 Eth
$10,140,325.00
429,323.605 LINK
2.0212%
13
MEXC
LINK-USDT$23.05
0.0074003 Eth
$9,989,281.00
433,376.100 LINK
2.0403%
14
Kraken
LINK-USD$23.10
0.0074145 Eth
$9,385,672.00
406,225.060 LINK
1.9125%
15
KuCoin
LINK-USDT$23.08
0.0074073 Eth
$9,094,042.00
393,938.026 LINK
1.8546%
16
Coinstore
LINK-USDT$23.03
0.0073908 Eth
$9,018,466.00
382,344.250 LINK
1.8000%
17
Binance
LINK-FDUSD$23.08
0.0074071 Eth
$8,639,137.00
365,810.800 LINK
1.7222%
18
Bitunix
LINK-USDT$23.04
0.0073987 Eth
$7,866,821.00
341,295.040 LINK
1.6068%
19
Binance
LINK-USDC$23.10
0.0074114 Eth
$6,984,059.00
296,868.450 LINK
1.3976%
20
CoinW
LINK-USDT$23.11
0.0074137 Eth
$6,638,663.00
287,315.920 LINK
1.3527%
21
BTSE
LINK-USDT$23.05
0.0073998 Eth
$5,833,050.00
253,045.849 LINK
1.1913%
22
BYDFi
LINK-USDT$23.15
0.0074389 Eth
$5,618,186.00
242,682.880 LINK
1.1425%
23
Hotcoin
LINK-USDT$23.05
0.0073965 Eth
$5,196,989.00
225,478.600 LINK
1.0615%
24
LATOKEN
LINK-USDT$23.05
0.0074006 Eth
$5,083,866.00
220,522.974 LINK
1.0382%
25
LBank
LINK-USDT$23.05
0.0074003 Eth
$4,893,576.00
212,303.460 LINK
0.9995%
26
Coinbase Exchange
LINK-EUR$23.08
0.0074133 Eth
$4,629,996.00
200,570.880 LINK
0.9443%
27
Bitvavo
LINK-EUR$23.14
0.0074301 Eth
$4,127,104.00
178,334.370 LINK
0.8396%
28
QMall
LINK-USDT$23.08
0.0074067 Eth
$4,010,376.00
170,097.797 LINK
0.8008%
29
FMCPAY
LINK-USDT$23.23
0.0074521 Eth
$3,933,155.00
166,986.924 LINK
0.7862%
30
Dex-Trade
LINK-USDT$23.08
0.0074056 Eth
$3,212,266.00
139,192.560 LINK
0.6553%
31
CoinEx
LINK-USDT$23.10
0.0074133 Eth
$2,332,261.00
98,930.710 LINK
0.4658%
32
Biconomy.com
LINK-USDT$23.05
0.0074029 Eth
$2,268,158.00
95,976.740 LINK
0.4518%
33
Coinbase Exchange
LINK-USDT$23.06
0.0074048 Eth
$2,158,019.00
93,567.810 LINK
0.4405%
34
Coinbase Exchange
LINK-GBP$23.03
0.0073971 Eth
$2,123,019.00
92,170.110 LINK
0.4339%
35
PointPay
LINK-USDT$23.09
0.0074089 Eth
$1,599,566.00
67,856.503 LINK
0.3195%
36
FMCPAY
LINK-ETH$23.10
0.0074122 Eth
$1,595,190.00
68,386.080 LINK
0.3220%
37
FMCPAY
LINK-BTC$23.09
0.0074125 Eth
$1,562,844.00
66,568.800 LINK
0.3134%
38
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.02
0.0073918 Eth
$1,337,689.00
57,755.715 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2719%
39
WhiteBIT
LINK-TRY$23.17
0.0074331 Eth
$1,269,464.00
54,799.470 LINK
0.2580%
40
Phemex
LINK-USDT$23.08
0.0074057 Eth
$1,203,264.00
52,134.120 LINK
0.2454%
41
EXMO
LINK-USDT$23.12
0.0074197 Eth
$1,039,442.00
44,962.687 LINK
0.2117%
42
WhiteBIT
LINK-BTC$23.22
0.0074508 Eth
$979,106.00
42,158.880 LINK
0.1985%
43
Gemini
LINK-USD$23.08
0.0074081 Eth
$963,012.00
41,716.083 LINK
0.1964%
44
Binance
LINK-TRY$23.33
0.0074975 Eth
$875,026.00
36,931.610 LINK
0.1739%
45
BitStorage
LINK-USDT$23.10
0.0074121 Eth
$823,901.00
35,666.490 LINK
0.1679%
46
Bybit
LINK-USDC$23.14
0.0074251 Eth
$822,998.00
34,912.691 LINK
0.1644%
47
Trubit
LINK-USDT$23.09
0.0074088 Eth
$775,500.00
32,954.940 LINK
0.1551%
48
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.20
0.0074493 Eth
$757,040.00
32,692.174 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1539%
49
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.10
0.0074151 Eth
$743,888.00
32,140.843 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1513%
50
Binance
LINK-EUR$23.26
0.0074690 Eth
$741,001.00
31,147.770 LINK
0.1466%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.06
0.0074021 Eth
$735,444.00
31,558.047 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1486%
52
BigONE
LINK-USDT$23.14
0.0074262 Eth
$715,293.00
30,906.030 LINK
0.1455%
53
Bitbank
LINK-JPY$23.20
0.0074499 Eth
$712,268.00
30,703.669 LINK
0.1445%
54
EarnBIT
LINK-USDT$23.04
0.0073945 Eth
$700,395.00
29,708.715 LINK
0.1399%
55
Coinbase Exchange
LINK-BTC$23.09
0.0074122 Eth
$646,406.00
27,992.030 LINK
0.1318%
56
OKX
LINK-USDC$23.04
0.0073939 Eth
$568,445.00
24,035.519 LINK
0.1132%
57
WhiteBIT
LINK-EUR$23.12
0.0074201 Eth
$564,864.00
24,432.740 LINK
0.1150%
58
QMall
LINK-USDC$23.07
0.0074057 Eth
$557,855.00
23,706.937 LINK
0.1116%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.03
0.0073947 Eth
$528,277.00
22,619.625 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1065%
60
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.08
0.0074128 Eth
$445,632.00
19,078.735 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0898%
61
HashKey Exchange
LINK-USD$23.20
0.0074434 Eth
$442,432.00
18,611.799 LINK
0.0876%
62
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.10
0.0074151 Eth
$436,871.00
445,455.074 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.0972%
63
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.09
0.0074118 Eth
$419,218.00
17,985.955 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0847%
64
GMO Japan
LINK-JPY$23.18
0.0074409 Eth
$396,328.00
17,098.400 LINK
0.0805%
65
Slex
LINK-ETH$23.28
0.0074658 Eth
$380,820.00
16,304.530 LINK
0.0768%
66
itBit
LINK-USD$23.12
0.0074204 Eth
$380,313.00
16,449.529 LINK
0.0774%
67
Tokpie
LINK-USDT$23.26
0.0074652 Eth
$370,331.00
15,923.028 LINK
0.0750%
68
LATOKEN
LINK-BTC$23.08
0.0074098 Eth
$366,031.00
15,857.561 LINK
0.0747%
69
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.09
0.0074152 Eth
$331,431.00
29,611.430 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1394%
70
Coinbase Exchange
LINK-ETH$23.24
0.0074601 Eth
$331,275.00
14,255.100 LINK
0.0671%
71
BitDelta
LINK-USDT$23.07
0.0074035 Eth
$299,009.00
12,645.000 LINK
0.0595%
72
Bitso
LINK-USD$23.07
0.0074030 Eth
$274,262.00
11,890.490 LINK
0.0560%
73
BitMart
LINK-BTC$23.08
0.0074095 Eth
$268,393.00
11,626.680 LINK
0.0547%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.10
0.0074151 Eth
$237,361.00
10,055.857 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0473%
75
Bitci TR
LINK-TRY$23.25
0.0074623 Eth
$235,717.00
9,937.904 LINK
0.0468%
76
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.17
0.0074397 Eth
$199,897.00
8,698.732 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0410%
77
Hotcoin
LINK-BTC$23.07
0.0074073 Eth
$192,649.00
8,350.000 LINK
0.0393%
78
BitStorage
LINK-ETH$23.11
0.0074165 Eth
$191,380.00
8,281.980 LINK
0.0390%
79
CoinTR
LINK-TRY$23.13
0.0074222 Eth
$178,862.00
7,535.500 LINK
0.0355%
80
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.07
0.0074045 Eth
$178,675.00
7,531.239 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0355%
81
BYDFi
LINK-USDC$23.26
0.0074627 Eth
$165,672.00
7,122.220 LINK
0.0335%
82
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.11
0.0074202 Eth
$156,021.00
6,629.350 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0312%
83
KuCoin
LINK-USDC$23.08
0.0074053 Eth
$142,747.00
6,185.177 LINK
0.0291%
84
OKX
LINK-EUR$23.27
0.0074658 Eth
$136,405.00
5,781.394 LINK
0.0272%
85
Kanga
LINK-PLN$23.22
0.0074500 Eth
$136,100.00
0.000 LINK
0.0000%
86
PointPay
LINK-BTC$23.09
0.0074120 Eth
$131,934.00
5,645.398 LINK
0.0266%
87
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.02
0.0073918 Eth
$125,725.00
127,020.765 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5980%
88
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.25
0.0074632 Eth
$116,087.00
4,993.751 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0235%
89
Bitkub
LINK-THB$23.39
0.0075060 Eth
$107,911.00
4,613.952 LINK
0.0217%
90
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.11
0.0074212 Eth
$99,447.00
101,521.226 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
0.4780%
91
Binance US
LINK-USDT$23.10
0.0074120 Eth
$96,873.00
4,194.039 LINK
0.0197%
92
Mercado Bitcoin
LINK-BRL$23.04
0.0073951 Eth
$73,472.00
3,188.992 LINK
0.0150%
93
Nonkyc.io
LINK-BTC$23.00
0.0073831 Eth
$65,451.00
2,789.350 LINK
0.0131%
94
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$23.18
0.0074374 Eth
$60,911.00
2,581.762 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0122%
95
Hotcoin
LINK-ETH$23.09
0.0074145 Eth
$59,760.00
2,588.370 LINK
0.0122%
96
BTCMarkets
LINK-AUD$23.24
0.0074576 Eth
$59,480.00
2,559.253 LINK
0.0120%
97
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0$23.07
0.0074034 Eth
$59,433.00
2,509.041 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0118%
98
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.06
0.0074052 Eth
$52,453.00
2,253.921 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0106%
99
OKX
LINK-USD$23.08
0.0074041 Eth
$42,821.00
1,806.176 LINK
0.0085%
100
Dex-Trade
LINK-ETH$23.20
0.0074445 Eth
$25,627.00
1,104.860 LINK
0.0052%

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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