ETH Price: $3,351.82 (-3.51%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

727,864 (0.00%)

Market

Price

$22.75 @ 0.006787 ETH (-5.87%)

Onchain Market Cap

$22,750,000,000.00

Circulating Supply Market Cap

$14,351,158,358.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 LINK

Value
$0.00
0x021af7759a76292850f74fb464f48e093c7d8159
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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 20581.82% |ETH 0.0003846 1664.69%

Market

Volume (24H):$928,029,453.00
Market Capitalization:$14,351,158,358.00
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$22.65
0.0067781 Eth
$94,576,697.00
4,098,071.420 LINK
19.9323%
2
Coinbase Exchange
LINK-USD$22.86
0.0068302 Eth
$36,575,810.00
1,599,711.780 LINK
7.7807%
3
Bitget
LINK-USDT$22.90
0.0068317 Eth
$31,538,535.00
1,364,415.159 LINK
6.6363%
4
MEXC
LINK-USDT$22.76
0.0068023 Eth
$28,124,063.00
1,235,948.140 LINK
6.0114%
5
Bybit
LINK-USDT$22.85
0.0068176 Eth
$26,010,837.00
1,124,690.629 LINK
5.4703%
6
Slex
LINK-USDT$22.77
0.0068112 Eth
$23,669,847.00
1,025,462.360 LINK
4.9877%
7
P2B
LINK-USDT$22.77
0.0068179 Eth
$19,118,558.00
839,714.880 LINK
4.0842%
8
CoinW
LINK-USDT$22.86
0.0068312 Eth
$18,622,920.00
814,510.160 LINK
3.9616%
9
OKX
LINK-USDT$22.87
0.0068257 Eth
$18,317,891.00
793,320.768 LINK
3.8586%
10
DigiFinex
LINK-USDT$22.88
0.0068254 Eth
$12,539,855.00
548,145.460 LINK
2.6661%
11
HTX
LINK-USDT$22.87
0.0068244 Eth
$11,412,756.00
495,331.559 LINK
2.4092%
12
Azbit
LINK-USDT$22.84
0.0068142 Eth
$9,432,828.00
408,356.563 LINK
1.9862%
13
XT.COM
LINK-USDT$22.78
0.0068109 Eth
$9,404,138.00
407,038.660 LINK
1.9798%
14
Coinstore
LINK-USDT$22.86
0.0068202 Eth
$8,287,107.00
358,934.190 LINK
1.7458%
15
Bitunix
LINK-USDT$22.77
0.0068081 Eth
$7,739,114.00
339,899.690 LINK
1.6532%
16
BTSE
LINK-USDT$22.84
0.0068295 Eth
$7,138,249.00
312,528.393 LINK
1.5201%
17
Binance
LINK-FDUSD$22.79
0.0068120 Eth
$6,856,773.00
296,766.630 LINK
1.4434%
18
Biconomy.com
LINK-USDT$22.88
0.0068261 Eth
$6,837,089.00
296,135.474 LINK
1.4404%
19
Kraken
LINK-USD$22.85
0.0068158 Eth
$6,816,176.00
298,330.706 LINK
1.4510%
20
BYDFi
LINK-USDT$22.79
0.0068074 Eth
$5,914,553.00
259,513.870 LINK
1.2622%
21
KuCoin
LINK-USDT$22.86
0.0068236 Eth
$5,345,899.00
233,803.413 LINK
1.1372%
22
Hotcoin
LINK-USDT$22.85
0.0068269 Eth
$4,769,656.00
208,740.770 LINK
1.0153%
23
LATOKEN
LINK-USDT$22.69
0.0067901 Eth
$4,595,732.00
202,548.413 LINK
0.9852%
24
LBank
LINK-USDT$22.77
0.0068046 Eth
$4,518,764.00
198,421.590 LINK
0.9651%
25
FMCPAY
LINK-USDT$22.79
0.0068058 Eth
$3,495,973.00
151,037.304 LINK
0.7346%
26
Dex-Trade
LINK-USDT$22.86
0.0068291 Eth
$3,040,388.00
132,998.440 LINK
0.6469%
27
Coinbase Exchange
LINK-GBP$22.79
0.0068115 Eth
$2,735,371.00
120,049.110 LINK
0.5839%
28
Bitvavo
LINK-EUR$22.80
0.0068235 Eth
$2,513,155.00
110,221.802 LINK
0.5361%
29
Dcoin
LINK-USDT$22.83
0.0068145 Eth
$2,353,509.00
103,081.000 LINK
0.5014%
30
CoinEx
LINK-USDT$22.88
0.0068249 Eth
$1,995,759.00
86,706.621 LINK
0.4217%
31
PointPay
LINK-USDT$22.78
0.0068119 Eth
$1,496,614.00
64,949.744 LINK
0.3159%
32
Bitbank
LINK-JPY$22.86
0.0068361 Eth
$1,474,722.00
64,513.638 LINK
0.3138%
33
FMCPAY
LINK-ETH$22.84
0.0068165 Eth
$1,451,477.00
63,355.520 LINK
0.3082%
34
EXMO
LINK-USDT$22.89
0.0068282 Eth
$1,332,375.00
58,216.754 LINK
0.2832%
35
Bitstamp
LINK-USD$22.86
0.0068195 Eth
$1,227,955.00
53,716.319 LINK
0.2613%
36
WhiteBIT
LINK-BTC$22.76
0.0068019 Eth
$1,181,784.00
51,930.770 LINK
0.2526%
37
WhiteBIT
LINK-TRY$22.92
0.0068401 Eth
$1,151,631.00
50,244.730 LINK
0.2444%
38
Phemex
LINK-USDT$22.78
0.0068101 Eth
$1,128,144.00
49,516.500 LINK
0.2408%
39
Bitstamp
LINK-EUR$22.71
0.0067743 Eth
$1,017,427.00
44,803.698 LINK
0.2179%
40
Coinbase Exchange
LINK-EUR$22.72
0.0067913 Eth
$994,726.00
43,785.740 LINK
0.2130%
41
Bybit
LINK-USDC$22.85
0.0068181 Eth
$966,030.00
42,058.957 LINK
0.2046%
42
Trubit
LINK-USDT$22.77
0.0068074 Eth
$888,822.00
38,505.740 LINK
0.1873%
43
EarnBIT
LINK-USDT$22.77
0.0068048 Eth
$861,077.00
37,320.944 LINK
0.1815%
44
itBit
LINK-USD$22.88
0.0068275 Eth
$806,786.00
35,261.620 LINK
0.1715%
45
Azbit
LINK-ETH$22.78
0.0068110 Eth
$799,093.00
34,926.593 LINK
0.1699%
46
BigONE
LINK-USDT$22.95
0.0068466 Eth
$791,617.00
34,495.960 LINK
0.1678%
47
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.90
0.0068308 Eth
$785,636.00
34,137.603 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.1660%
48
BitStorage
LINK-USDT$22.87
0.0068259 Eth
$773,287.00
33,808.170 LINK
0.1644%
49
Tokpie
LINK-USDT$22.70
0.0067825 Eth
$671,227.00
29,563.884 LINK
0.1438%
50
Coinbase Exchange
LINK-USDT$22.90
0.0068313 Eth
$582,896.00
25,454.518 LINK
0.1238%
51
Binance
LINK-TRY$22.85
0.0068309 Eth
$498,322.00
21,578.240 LINK
0.1050%
52
HashKey Exchange
LINK-USD$22.87
0.0068301 Eth
$483,870.00
20,869.713 LINK
0.1015%
53
Koinpark
LINK-USDT$22.80
0.0068120 Eth
$476,762.00
20,910.877 LINK
0.1017%
54
PancakeSwap V3 (BSC)
0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C$22.71
0.0067760 Eth
$474,135.00
20,772.975 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD
0.1010%
55
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.76
0.0067923 Eth
$472,541.00
20,839.415 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1014%
56
Gemini
LINK-USD$22.91
0.0068354 Eth
$433,318.00
18,911.085 LINK
0.0920%
57
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.70
0.0067742 Eth
$416,823.00
18,294.690 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0890%
58
Slex
LINK-ETH$22.78
0.0068056 Eth
$409,542.00
17,873.100 LINK
0.0869%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$22.93
0.0068404 Eth
$405,010.00
17,481.436 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0850%
60
GMO Japan
LINK-JPY$22.82
0.0068107 Eth
$400,812.00
17,562.800 LINK
0.0854%
61
Quickswap (v3)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.79
0.0068082 Eth
$378,230.00
383,154.552 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.8636%
62
BitMart
LINK-BTC$22.79
0.0068091 Eth
$356,368.00
15,634.700 LINK
0.0760%
63
WhiteBIT
LINK-EUR$22.87
0.0068311 Eth
$323,256.00
14,136.430 LINK
0.0688%
64
Coinone
LINK-KRW$23.26
0.0069375 Eth
$312,208.00
13,425.012 LINK
0.0653%
65
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$22.85
0.0068178 Eth
$297,421.00
22,395.550 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.1089%
66
OKX
LINK-USDC$22.85
0.0068192 Eth
$274,878.00
11,946.394 LINK
0.0581%
67
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$22.68
0.0067678 Eth
$272,477.00
276,868.220 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.3466%
68
Camelot V3
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$22.77
0.0067946 Eth
$261,609.00
11,292.389 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0549%
69
BitDelta
LINK-USDT$22.85
0.0068211 Eth
$259,836.00
11,239.000 LINK
0.0547%
70
LATOKEN
LINK-BTC$22.80
0.0068066 Eth
$252,345.00
11,066.169 LINK
0.0538%
71
Bitkub
LINK-THB$22.86
0.0068357 Eth
$250,545.00
10,961.098 LINK
0.0533%
72
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.82
0.0068171 Eth
$246,596.00
10,752.491 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0523%
73
Coinbase Exchange
LINK-BTC$22.81
0.0068157 Eth
$245,208.00
10,749.120 LINK
0.0523%
74
Bitci TR
LINK-TRY$22.72
0.0067926 Eth
$235,697.00
10,166.581 LINK
0.0494%
75
Binance
LINK-BRL$22.96
0.0068506 Eth
$201,460.00
8,622.970 LINK
0.0419%
76
PointPay
LINK-BTC$22.79
0.0068114 Eth
$187,222.00
8,170.840 LINK
0.0397%
77
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.88
0.0068286 Eth
$185,388.00
8,016.446 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0390%
78
Hotcoin
LINK-BTC$22.84
0.0068183 Eth
$170,779.00
7,475.780 LINK
0.0364%
79
Binance US
LINK-USDT$22.86
0.0068202 Eth
$167,542.00
7,329.222 LINK
0.0356%
80
Bitbegin
LINK-USDT$22.79
0.0067994 Eth
$165,138.00
7,204.930 LINK
0.0350%
81
BYDFi
LINK-USDC$22.75
0.0068050 Eth
$162,300.00
7,133.090 LINK
0.0347%
82
BitStorage
LINK-ETH$22.84
0.0068162 Eth
$148,859.00
6,517.430 LINK
0.0317%
83
BTCMarkets
LINK-AUD$22.83
0.0068210 Eth
$146,147.00
6,401.605 LINK
0.0311%
84
BitMart
LINK-ETH$22.77
0.0068025 Eth
$145,889.00
6,406.720 LINK
0.0312%
85
KuCoin
LINK-USDC$22.85
0.0068193 Eth
$124,749.00
5,459.372 LINK
0.0266%
86
OKX
LINK-EUR$22.48
0.0067082 Eth
$109,991.00
4,783.280 LINK
0.0233%
87
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$22.86
0.0068210 Eth
$99,669.00
4,344.659 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0211%
88
Coinbase Exchange
LINK-ETH$22.79
0.0068021 Eth
$99,664.00
4,373.130 LINK
0.0213%
89
Bitso
LINK-USD$22.78
0.0068134 Eth
$98,686.00
4,331.564 LINK
0.0211%
90
Coins.ph
LINK-PHP$22.73
0.0067914 Eth
$84,690.00
3,611.946 LINK
0.0176%
91
KuCoin
LINK-BTC$22.84
0.0068167 Eth
$74,821.00
3,275.607 LINK
0.0159%
92
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$22.90
0.0068308 Eth
$72,943.00
73,612.115 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.3580%
93
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174$22.88
0.0068273 Eth
$72,062.00
3,126.148 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0152%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$22.70
0.0067738 Eth
$60,988.00
2,690.155 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0131%
95
Hotcoin
LINK-ETH$22.77
0.0068107 Eth
$58,871.00
2,585.010 LINK
0.0126%
96
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$22.89
0.0068302 Eth
$55,494.00
2,411.784 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0117%
97
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$22.86
0.0068185 Eth
$52,516.00
3,944.903 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0192%
98
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$22.77
0.0067916 Eth
$47,273.00
2,043.266 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0099%
99
Korbit
LINK-KRW$23.09
0.0068891 Eth
$30,325.00
1,289.362 LINK
0.0063%
100
Solidly V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$22.75
0.0067884 Eth
$19,796.92
860.531 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0042%

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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