ETH Price: $3,335.83 (-3.60%)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,888 ( -0.108%)

Market

Price

$20.63 @ 0.006184 ETH (-6.79%)

Onchain Market Cap

$20,630,000,000.00

Circulating Supply Market Cap

$13,014,324,277.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
3.761931992968638646 LINK

Value
$77.61 ( ~0.0232655597130946 Eth) [0.0000%]
0x03fdf6032ecb1e32e87d790ae38e4ff9da3a3ca0
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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 18654.55% |ETH 0.0003846 1507.9%

Market

Volume (24H):$1,111,236,571.00
Market Capitalization:$13,014,324,277.00
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
Binance
LINK-USDT$20.58
0.0061567 Eth
$149,763,716.00
7,006,373.760 LINK
24.0090%
2
Coinbase Exchange
LINK-USD$20.55
0.0061506 Eth
$47,992,895.00
2,335,534.330 LINK
8.0033%
3
Bitget
LINK-USDT$20.57
0.0061551 Eth
$32,098,126.00
1,505,048.762 LINK
5.1574%
4
P2B
LINK-USDT$20.64
0.0061700 Eth
$27,104,361.00
1,313,195.700 LINK
4.5000%
5
Bybit
LINK-USDT$20.57
0.0061566 Eth
$25,652,066.00
1,207,779.332 LINK
4.1387%
6
MEXC
LINK-USDT$20.55
0.0061491 Eth
$22,261,094.00
1,083,486.870 LINK
3.7128%
7
Slex
LINK-USDT$20.58
0.0061576 Eth
$21,447,905.00
1,010,592.790 LINK
3.4630%
8
DigiFinex
LINK-USDT$20.58
0.0061512 Eth
$15,973,639.00
776,223.830 LINK
2.6599%
9
OKX
LINK-USDT$20.62
0.0061688 Eth
$15,261,988.00
716,952.006 LINK
2.4568%
10
XT.COM
LINK-USDT$20.73
0.0061777 Eth
$15,232,792.00
712,388.120 LINK
2.4412%
11
HTX
LINK-USDT$20.62
0.0061643 Eth
$14,325,154.00
675,074.280 LINK
2.3133%
12
FameEX
LINK-USDT$20.52
0.0061412 Eth
$14,169,707.00
664,663.807 LINK
2.2776%
13
Azbit
LINK-USDT$20.53
0.0061463 Eth
$14,116,264.00
661,732.023 LINK
2.2676%
14
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$20.55
0.0061477 Eth
$13,453,783.00
640,769.502 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.1957%
15
Coinstore
LINK-USDT$20.55
0.0061503 Eth
$11,515,629.00
541,490.060 LINK
1.8555%
16
Bitunix
LINK-USDT$20.53
0.0061461 Eth
$10,262,695.00
499,800.300 LINK
1.7127%
17
CoinW
LINK-USDT$20.61
0.0061618 Eth
$9,777,426.00
474,313.560 LINK
1.6253%
18
Binance
LINK-FDUSD$20.58
0.0061568 Eth
$9,306,991.00
435,995.060 LINK
1.4940%
19
LATOKEN
LINK-USDT$20.83
0.0061669 Eth
$8,841,166.00
424,441.370 LINK
1.4544%
20
Binance
LINK-USDC$20.67
0.0061740 Eth
$7,833,875.00
366,407.170 LINK
1.2556%
21
BYDFi
LINK-USDT$20.56
0.0061529 Eth
$7,764,786.00
377,734.670 LINK
1.2944%
22
Hotcoin
LINK-USDT$20.55
0.0061493 Eth
$7,147,194.00
347,869.680 LINK
1.1921%
23
KuCoin
LINK-USDT$20.62
0.0061650 Eth
$6,584,758.00
319,269.422 LINK
1.0941%
24
LBank
LINK-USDT$20.56
0.0061516 Eth
$6,498,943.00
316,106.090 LINK
1.0832%
25
Kraken
LINK-USD$20.58
0.0061581 Eth
$5,526,039.00
268,514.247 LINK
0.9201%
26
QMall
LINK-USDT$20.59
0.0061529 Eth
$5,402,541.00
253,799.829 LINK
0.8697%
27
BTSE
LINK-USDT$20.56
0.0061516 Eth
$5,204,761.00
253,158.190 LINK
0.8675%
28
Dex-Trade
LINK-USDT$20.51
0.0061411 Eth
$4,085,363.00
199,164.961 LINK
0.6825%
29
Bitvavo
LINK-EUR$20.54
0.0061476 Eth
$4,083,540.00
198,818.910 LINK
0.6813%
30
FMCPAY
LINK-USDT$20.58
0.0061576 Eth
$3,130,990.00
147,631.592 LINK
0.5059%
31
CoinEx
LINK-USDT$20.66
0.0061574 Eth
$2,794,217.00
130,961.807 LINK
0.4488%
32
EXMO
LINK-USDT$20.58
0.0061573 Eth
$2,444,487.00
118,789.112 LINK
0.4071%
33
Dcoin
LINK-USDT$20.60
0.0061607 Eth
$2,381,557.00
115,620.000 LINK
0.3962%
34
Biconomy.com
LINK-USDT$20.55
0.0061497 Eth
$2,196,234.00
103,246.290 LINK
0.3538%
35
Coinbase Exchange
LINK-EUR$20.62
0.0061694 Eth
$1,885,195.00
91,430.460 LINK
0.3133%
36
PointPay
LINK-USDT$20.65
0.0061676 Eth
$1,799,217.00
84,491.745 LINK
0.2895%
37
Bybit
LINK-USDC$20.59
0.0061604 Eth
$1,779,942.00
84,325.526 LINK
0.2890%
38
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$20.55
0.0061481 Eth
$1,754,371.00
83,656.582 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.2867%
39
Phemex
LINK-USDT$20.62
0.0061702 Eth
$1,667,571.00
80,867.030 LINK
0.2771%
40
ProBit Global
LINK-USDT$20.67
0.0061753 Eth
$1,571,242.00
76,001.580 LINK
0.2604%
41
Binance
LINK-EUR$20.66
0.0061559 Eth
$1,522,699.00
71,411.550 LINK
0.2447%
42
itBit
LINK-USD$20.62
0.0061697 Eth
$1,409,721.00
68,366.695 LINK
0.2343%
43
Kraken
LINK-EUR$20.60
0.0061635 Eth
$1,374,141.00
66,712.762 LINK
0.2286%
44
FMCPAY
LINK-ETH$20.56
0.0061506 Eth
$1,326,749.00
63,351.360 LINK
0.2171%
45
FMCPAY
LINK-BTC$20.57
0.0061627 Eth
$1,247,296.00
59,797.200 LINK
0.2049%
46
Tokpie
LINK-USDT$20.82
0.0062253 Eth
$1,097,832.00
52,717.207 LINK
0.1806%
47
BigONE
LINK-USDT$20.53
0.0061361 Eth
$1,047,992.00
51,051.960 LINK
0.1749%
48
BitStorage
LINK-USDT$20.56
0.0061529 Eth
$1,035,893.00
50,386.570 LINK
0.1727%
49
Coinbase Exchange
LINK-GBP$20.60
0.0061648 Eth
$1,014,670.00
49,246.960 LINK
0.1688%
50
Gemini
LINK-USD$20.60
0.0061634 Eth
$986,308.00
47,884.215 LINK
0.1641%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.57
0.0061495 Eth
$952,512.00
45,612.403 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1563%
52
Bitbank
LINK-JPY$20.62
0.0061687 Eth
$941,611.00
45,672.370 LINK
0.1565%
53
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.51
0.0061371 Eth
$834,751.00
40,063.933 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.1373%
54
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.56
0.0061442 Eth
$786,709.00
37,459.346 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1284%
55
Koinpark
LINK-USDT$20.58
0.0061519 Eth
$745,171.00
36,209.297 LINK
0.1241%
56
tanX
LINK-USDC$20.53
0.0061456 Eth
$726,559.00
34,356.280 LINK
0.1177%
57
Coinbase Exchange
LINK-BTC$20.57
0.0061497 Eth
$711,775.00
34,597.200 LINK
0.1186%
58
EarnBIT
LINK-USDT$20.56
0.0061534 Eth
$704,858.00
33,087.822 LINK
0.1134%
59
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$20.56
0.0061533 Eth
$663,209.00
31,397.613 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1076%
60
Coinbase Exchange
LINK-USDT$20.59
0.0061612 Eth
$627,422.00
30,477.018 LINK
0.1044%
61
Binance
LINK-TRY$20.71
0.0061901 Eth
$556,848.00
25,990.370 LINK
0.0891%
62
OKX
LINK-USDC$20.58
0.0061591 Eth
$551,564.00
25,869.504 LINK
0.0886%
63
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$20.55
0.0061481 Eth
$547,059.00
25,878.578 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0887%
64
ProBit Global
LINK-BTC$20.64
0.0061689 Eth
$543,888.00
26,350.397 LINK
0.0903%
65
Bitbegin
LINK-USDT$20.56
0.0061504 Eth
$540,795.00
25,492.183 LINK
0.0874%
66
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.54
0.0061460 Eth
$522,552.00
24,842.365 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0851%
67
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.49
0.0061258 Eth
$490,857.00
507,860.916 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.7403%
68
Kraken
LINK-ETH$20.53
0.0061434 Eth
$463,925.00
22,596.661 LINK
0.0774%
69
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$20.55
0.0061477 Eth
$462,906.00
35,271.296 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1209%
70
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$20.51
0.0061363 Eth
$449,369.00
463,959.465 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.5899%
71
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$20.60
0.0061650 Eth
$427,828.00
20,352.826 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0697%
72
GMO Japan
LINK-JPY$20.71
0.0061992 Eth
$419,250.00
20,240.800 LINK
0.0694%
73
Coinbase Exchange
LINK-ETH$20.52
0.0061419 Eth
$332,519.00
16,203.870 LINK
0.0555%
74
Bitkub
LINK-THB$20.65
0.0061789 Eth
$302,793.00
14,665.996 LINK
0.0503%
75
Slex
LINK-ETH$20.59
0.0061597 Eth
$300,984.00
14,334.490 LINK
0.0491%
76
BitDelta
LINK-USDT$20.57
0.0061551 Eth
$294,231.00
13,801.000 LINK
0.0473%
77
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$20.55
0.0061487 Eth
$277,725.00
13,508.065 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0463%
78
Hotcoin
LINK-BTC$20.59
0.0061559 Eth
$274,184.00
13,313.690 LINK
0.0456%
79
BitMart
LINK-BTC$20.57
0.0061488 Eth
$260,210.00
12,649.700 LINK
0.0433%
80
bitcastle
LINK-USDT$20.54
0.0061463 Eth
$255,692.00
12,024.340 LINK
0.0412%
81
Bitso
LINK-USD$20.57
0.0061489 Eth
$254,638.00
12,378.680 LINK
0.0424%
82
BYDFi
LINK-USDC$20.59
0.0061560 Eth
$252,399.00
12,256.530 LINK
0.0420%
83
BitStorage
LINK-ETH$20.56
0.0061531 Eth
$240,502.00
11,697.830 LINK
0.0401%
84
LATOKEN
LINK-BTC$20.54
0.0061467 Eth
$224,229.00
10,917.575 LINK
0.0374%
85
Bitci TR
LINK-TRY$20.74
0.0062064 Eth
$212,424.00
9,979.800 LINK
0.0342%
86
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$20.54
0.0061487 Eth
$178,033.00
8,385.983 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0287%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$20.60
0.0061570 Eth
$169,415.00
8,060.819 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0276%
88
PointPay
LINK-BTC$20.54
0.0061424 Eth
$163,409.00
7,793.232 LINK
0.0267%
89
Kraken
LINK-GBP$20.59
0.0061540 Eth
$141,113.00
6,854.259 LINK
0.0235%
90
Gemini
LINK-BTC$20.59
0.0061596 Eth
$106,822.00
5,189.279 LINK
0.0178%
91
OKX
LINK-EUR$20.49
0.0061325 Eth
$105,322.00
4,968.770 LINK
0.0170%
92
Hotcoin
LINK-ETH$20.63
0.0061670 Eth
$97,263.00
4,715.400 LINK
0.0162%
93
Mercado Bitcoin
LINK-BRL$20.58
0.0061589 Eth
$97,055.00
4,715.091 LINK
0.0162%
94
Binance US
LINK-USDT$20.54
0.0061217 Eth
$87,721.00
4,270.677 LINK
0.0146%
95
CoinEx
LINK-BTC$20.57
0.0061533 Eth
$87,033.00
4,182.303 LINK
0.0143%
96
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$20.59
0.0061595 Eth
$70,600.00
3,379.074 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0116%
97
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$20.52
0.0061326 Eth
$67,010.00
3,214.682 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0110%
98
PancakeSwap (v2)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$20.66
0.0061832 Eth
$65,349.00
3,096.334 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.0106%
99
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$20.55
0.0061481 Eth
$63,529.00
65,888.527 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.2258%
100
Dex-Trade
LINK-ETH$20.63
0.0061700 Eth
$32,513.00
1,575.920 LINK
0.0054%

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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