ETH Price: $3,314.04 (-1.51%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,202 ( 0.008%)

Market

Price

$23.76 @ 0.007169 ETH (-3.31%)

Onchain Market Cap

$23,760,000,000.00

Circulating Supply Market Cap

$14,987,727,892.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
452.24972212 LINK

Value
$10,745.45 ( ~3.2424 Eth) [0.0000%]
0xeca6540dbb2a8070e772e8123a4b2b3df61ef0bf
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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 21500% |ETH 0.0003846 1764.01%

Market

Volume (24H):$1,196,790,259.00
Market Capitalization:$14,987,727,892.00
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$23.68
0.0071241 Eth
$166,204,948.00
6,919,205.270 LINK
21.5987%
2
Coinbase Exchange
LINK-USD$23.69
0.0071248 Eth
$78,506,371.00
3,313,763.500 LINK
10.3441%
3
Upbit
LINK-KRW$24.24
0.0072906 Eth
$50,161,650.00
2,069,225.979 LINK
6.4592%
4
Bybit
LINK-USDT$23.69
0.0071254 Eth
$46,687,438.00
1,944,441.456 LINK
6.0697%
5
Slex
LINK-USDT$23.68
0.0071235 Eth
$24,502,615.00
1,021,267.530 LINK
3.1879%
6
DigiFinex
LINK-USDT$23.75
0.0071412 Eth
$20,515,585.00
863,707.980 LINK
2.6961%
7
OKX
LINK-USDT$23.67
0.0071176 Eth
$20,325,417.00
845,657.514 LINK
2.6398%
8
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.73
0.0071366 Eth
$18,322,235.00
756,156.285 0X514910771AF9CA656AF840DFF83E8264ECF986CA
2.3604%
9
HTX
LINK-USDT$23.76
0.0071451 Eth
$18,171,417.00
757,305.188 LINK
2.3640%
10
Gate.io
LINK-USDT$23.74
0.0071372 Eth
$17,757,917.00
739,557.280 LINK
2.3086%
11
XT.COM
LINK-USDT$23.81
0.0071458 Eth
$16,584,548.00
690,309.150 LINK
2.1548%
12
Azbit
LINK-USDT$23.69
0.0071222 Eth
$16,409,710.00
683,053.534 LINK
2.1322%
13
Binance
LINK-FDUSD$23.67
0.0071135 Eth
$15,773,896.00
657,955.090 LINK
2.0538%
14
Coinstore
LINK-USDT$23.82
0.0071485 Eth
$14,507,388.00
604,004.440 LINK
1.8854%
15
MEXC
LINK-USDT$23.71
0.0071237 Eth
$14,405,961.00
607,621.610 LINK
1.8967%
16
Bitunix
LINK-USDT$23.73
0.0071242 Eth
$12,276,905.00
517,571.720 LINK
1.6156%
17
CoinW
LINK-USDT$23.72
0.0071270 Eth
$10,950,450.00
461,661.520 LINK
1.4411%
18
Bithumb
LINK-KRW$24.28
0.0073020 Eth
$10,810,112.00
445,299.601 LINK
1.3900%
19
Kraken
LINK-USD$23.68
0.0071193 Eth
$9,891,939.00
417,807.856 LINK
1.3042%
20
BYDFi
LINK-USDT$23.75
0.0071277 Eth
$9,174,779.00
386,254.000 LINK
1.2057%
21
KuCoin
LINK-USDT$23.75
0.0071414 Eth
$8,704,864.00
366,527.580 LINK
1.1441%
22
BTSE
LINK-USDT$23.82
0.0071424 Eth
$8,451,249.00
354,802.987 LINK
1.1075%
23
LATOKEN
LINK-USDT$23.72
0.0071227 Eth
$8,247,842.00
347,713.850 LINK
1.0854%
24
LBank
LINK-USDT$23.73
0.0071342 Eth
$8,142,027.00
343,175.150 LINK
1.0712%
25
Binance
LINK-USDC$23.68
0.0071211 Eth
$7,731,121.00
322,120.150 LINK
1.0055%
26
QMall
LINK-USDT$23.71
0.0071264 Eth
$6,478,450.00
269,838.588 LINK
0.8423%
27
Hotcoin
LINK-USDT$23.71
0.0071248 Eth
$6,294,656.00
265,461.380 LINK
0.8287%
28
Coinbase Exchange
LINK-USDT$23.68
0.0071235 Eth
$5,414,897.00
228,630.724 LINK
0.7137%
29
Coinbase Exchange
LINK-EUR$23.62
0.0070974 Eth
$5,406,552.00
228,887.550 LINK
0.7145%
30
Dex-Trade
LINK-USDT$23.97
0.0071720 Eth
$5,269,918.00
219,831.230 LINK
0.6862%
31
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.81
0.0071465 Eth
$4,255,962.00
175,618.500 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.5482%
32
FMCPAY
LINK-USDT$23.67
0.0071214 Eth
$4,029,963.00
167,931.247 LINK
0.5242%
33
CoinEx
LINK-USDT$23.94
0.0071602 Eth
$3,529,661.00
147,319.830 LINK
0.4599%
34
Biconomy.com
LINK-USDT$23.68
0.0071220 Eth
$2,578,008.00
107,305.330 LINK
0.3350%
35
PointPay
LINK-USDT$23.78
0.0071365 Eth
$2,481,393.00
103,358.268 LINK
0.3226%
36
Phemex
LINK-USDT$23.74
0.0071287 Eth
$1,925,392.00
81,102.670 LINK
0.2532%
37
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.80
0.0071446 Eth
$1,867,710.00
77,274.052 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2412%
38
FMCPAY
LINK-ETH$23.77
0.0071367 Eth
$1,828,086.00
75,432.480 LINK
0.2355%
39
Coinbase Exchange
LINK-GBP$23.64
0.0071041 Eth
$1,759,289.00
74,409.310 LINK
0.2323%
40
FMCPAY
LINK-BTC$23.79
0.0071422 Eth
$1,711,098.00
70,500.100 LINK
0.2201%
41
Coinbase Exchange
LINK-ETH$23.77
0.0071345 Eth
$1,620,112.00
68,171.260 LINK
0.2128%
42
EXMO
LINK-USDT$23.79
0.0071533 Eth
$1,564,465.00
65,764.210 LINK
0.2053%
43
Kraken
LINK-EUR$23.62
0.0071028 Eth
$1,539,336.00
65,168.124 LINK
0.2034%
44
BitStorage
LINK-USDT$23.96
0.0071690 Eth
$1,299,716.00
54,236.450 LINK
0.1693%
45
Bitbank
LINK-JPY$23.80
0.0071586 Eth
$1,226,497.00
51,527.707 LINK
0.1608%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.77
0.0071350 Eth
$1,205,657.00
49,742.412 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1553%
47
Tokpie
LINK-USDT$24.00
0.0071786 Eth
$1,125,049.00
46,886.391 LINK
0.1464%
48
Kraken
LINK-USDT$23.69
0.0071235 Eth
$1,117,763.00
47,183.185 LINK
0.1473%
49
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$23.74
0.0071271 Eth
$1,103,084.00
46,073.404 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1438%
50
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.69
0.0071234 Eth
$1,079,430.00
1,095,814.277 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
3.4206%
51
Binance
LINK-TRY$24.11
0.0072136 Eth
$1,037,761.00
42,927.670 LINK
0.1340%
52
tanX
LINK-USDC$23.71
0.0071315 Eth
$1,002,687.00
41,723.460 LINK
0.1302%
53
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$23.77
0.0071485 Eth
$975,285.00
69,536.293 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.2171%
54
Gemini
LINK-USD$23.72
0.0071328 Eth
$951,371.00
40,113.837 LINK
0.1252%
55
EarnBIT
LINK-USDT$23.82
0.0071522 Eth
$926,537.00
38,494.580 LINK
0.1202%
56
Binance
LINK-EUR$23.57
0.0070757 Eth
$914,775.00
38,227.410 LINK
0.1193%
57
BigONE
LINK-USDT$23.74
0.0071262 Eth
$878,047.00
36,990.390 LINK
0.1155%
58
Trubit
LINK-USDT$23.79
0.0071383 Eth
$876,055.00
36,529.050 LINK
0.1140%
59
Bybit
LINK-USDC$23.69
0.0071257 Eth
$838,359.00
34,977.331 LINK
0.1092%
60
LATOKEN
LINK-BTC$23.67
0.0071170 Eth
$740,508.00
31,281.381 LINK
0.0976%
61
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$23.76
0.0071331 Eth
$685,810.00
694,350.812 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
2.1675%
62
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.69
0.0071255 Eth
$658,538.00
27,259.958 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0851%
63
itBit
LINK-USD$23.64
0.0071097 Eth
$637,905.00
26,984.142 LINK
0.0842%
64
QMall
LINK-USDC$23.68
0.0071237 Eth
$630,365.00
26,267.310 LINK
0.0820%
65
GMO Japan
LINK-JPY$23.85
0.0071654 Eth
$568,209.00
23,826.800 LINK
0.0744%
66
Kraken
LINK-ETH$23.77
0.0071478 Eth
$539,599.00
22,700.128 LINK
0.0709%
67
Coinbase Exchange
LINK-BTC$23.71
0.0071306 Eth
$395,955.00
16,700.230 LINK
0.0521%
68
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$23.77
0.0071475 Eth
$393,262.00
16,237.085 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0507%
69
OKX
LINK-USDC$23.67
0.0071196 Eth
$389,293.00
16,223.695 LINK
0.0506%
70
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.73
0.0071304 Eth
$355,165.00
14,748.296 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0460%
71
Coinone
LINK-KRW$24.25
0.0072927 Eth
$349,553.00
14,415.406 LINK
0.0450%
72
BitDelta
LINK-USDT$23.68
0.0071241 Eth
$331,045.00
13,790.000 LINK
0.0430%
73
Slex
LINK-ETH$23.72
0.0071319 Eth
$322,416.00
13,293.320 LINK
0.0415%
74
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$23.81
0.0071476 Eth
$318,413.00
13,135.023 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0410%
75
bitcastle
LINK-USDT$23.68
0.0071241 Eth
$301,132.00
12,550.700 LINK
0.0392%
76
PointPay
LINK-BTC$23.69
0.0071259 Eth
$286,030.00
11,827.373 LINK
0.0369%
77
BitMart
LINK-BTC$23.71
0.0071298 Eth
$278,509.00
11,747.560 LINK
0.0367%
78
Bitkub
LINK-THB$23.84
0.0071723 Eth
$261,391.00
10,962.487 LINK
0.0342%
79
BitStorage
LINK-ETH$23.71
0.0071329 Eth
$260,604.00
10,989.860 LINK
0.0343%
80
Hotcoin
LINK-BTC$23.80
0.0071423 Eth
$229,804.00
9,654.900 LINK
0.0301%
81
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$23.80
0.0071569 Eth
$217,943.00
9,002.285 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0281%
82
CEX.IO
LINK-USDT$23.68
0.0071238 Eth
$209,975.00
8,709.394 LINK
0.0272%
83
AscendEX (BitMax)
LINK-USD$23.83
0.0071677 Eth
$207,602.00
8,710.700 LINK
0.0272%
84
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$23.77
0.0071350 Eth
$207,555.00
8,635.965 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0270%
85
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$23.72
0.0071331 Eth
$197,871.00
8,238.560 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0257%
86
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$23.74
0.0071282 Eth
$193,599.00
7,962.281 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0249%
87
Bitci TR
LINK-TRY$23.85
0.0071592 Eth
$193,198.00
8,001.313 LINK
0.0250%
88
Uniswap V2 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$23.66
0.0071155 Eth
$192,053.00
7,946.453 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0248%
89
BYDFi
LINK-USDC$23.69
0.0071255 Eth
$189,907.00
8,016.640 LINK
0.0250%
90
KuCoin
LINK-USDC$23.67
0.0071180 Eth
$187,962.00
7,940.372 LINK
0.0248%
91
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$23.78
0.0071375 Eth
$172,927.00
174,765.347 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.5455%
92
Binance US
LINK-USDT$23.75
0.0071313 Eth
$166,553.00
7,011.575 LINK
0.0219%
93
Kraken
LINK-GBP$23.73
0.0071351 Eth
$148,554.00
6,260.544 LINK
0.0195%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$23.76
0.0071318 Eth
$131,894.00
5,455.979 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0170%
95
BTCMarkets
LINK-AUD$23.77
0.0071488 Eth
$107,840.00
4,536.620 LINK
0.0142%
96
Bitso
LINK-USD$23.74
0.0071329 Eth
$104,978.00
4,422.167 LINK
0.0138%
97
BitMart
LINK-ETH$23.74
0.0071385 Eth
$102,280.00
4,308.960 LINK
0.0135%
98
Mercado Bitcoin
LINK-BRL$23.76
0.0071453 Eth
$99,831.00
4,201.218 LINK
0.0131%
99
Kanga
LINK-PLN$23.82
0.0071536 Eth
$93,714.00
0.000 LINK
0.0000%
100
Coins.ph
LINK-PHP$24.02
0.0072231 Eth
$74,658.00
3,096.655 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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