ETH Price: $3,338.00 (-0.16%)

Token

ChainLink Token (LINK)
 

Overview

Max Total Supply

1,000,000,000 LINK

Holders

728,311 ( 0.060%)

Market

Price

$21.49 @ 0.006438 ETH (-5.19%)

Onchain Market Cap

$21,490,000,000.00

Circulating Supply Market Cap

$13,573,585,315.00

Other Info

Token Contract (WITH 18 Decimals)

Balance
0.10873392065170192 LINK

Value
$2.34 ( ~0.000701018595778781 Eth) [0.0000%]
0x77541c3058398de017dbf07aeba4fbcbcd60e752
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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 19436.36% |ETH 0.0003846 1573.95%

Market

Volume (24H):$1,085,204,857.00
Market Capitalization:$13,573,585,315.00
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$21.41
0.0064236 Eth
$44,989,385.00
2,101,325.770 LINK
10.1260%
2
WhiteBIT
LINK-USDT$21.45
0.0064330 Eth
$37,886,616.00
1,766,555.930 LINK
8.5128%
3
Upbit
LINK-KRW$21.90
0.0065678 Eth
$37,380,516.00
1,707,199.233 LINK
8.2268%
4
Bitget
LINK-USDT$21.43
0.0064241 Eth
$37,075,310.00
1,653,799.166 LINK
7.9694%
5
Bybit
LINK-USDT$21.44
0.0064271 Eth
$31,564,638.00
1,410,588.219 LINK
6.7974%
6
MEXC
LINK-USDT$21.37
0.0064107 Eth
$25,795,537.00
1,207,083.990 LINK
5.8168%
7
OKX
LINK-USDT$21.41
0.0064182 Eth
$24,050,236.00
1,068,775.231 LINK
5.1503%
8
CoinW
LINK-USDT$21.48
0.0064400 Eth
$19,394,815.00
903,096.280 LINK
4.3519%
9
DigiFinex
LINK-USDT$21.46
0.0064307 Eth
$15,092,489.00
703,446.230 LINK
3.3898%
10
FameEX
LINK-USDT$21.49
0.0064495 Eth
$11,754,622.00
520,862.879 LINK
2.5100%
11
XT.COM
LINK-USDT$21.40
0.0064188 Eth
$11,735,787.00
519,993.480 LINK
2.5058%
12
Azbit
LINK-USDT$21.39
0.0064165 Eth
$11,729,163.00
519,805.578 LINK
2.5049%
13
HTX
LINK-USDT$21.46
0.0064337 Eth
$11,292,990.00
499,426.713 LINK
2.4067%
14
Coinstore
LINK-USDT$21.35
0.0064050 Eth
$10,413,392.00
461,996.570 LINK
2.2263%
15
Bitunix
LINK-USDT$21.41
0.0064204 Eth
$9,167,496.00
428,385.540 LINK
2.0643%
16
Biconomy.com
LINK-USDT$21.40
0.0064186 Eth
$7,774,913.00
344,919.022 LINK
1.6621%
17
BTSE
LINK-USDT$21.40
0.0064202 Eth
$7,413,064.00
346,419.304 LINK
1.6693%
18
BYDFi
LINK-USDT$21.45
0.0064335 Eth
$7,264,758.00
338,709.740 LINK
1.6322%
19
Binance
LINK-FDUSD$21.42
0.0064253 Eth
$6,691,908.00
296,934.320 LINK
1.4309%
20
Hotcoin
LINK-USDT$21.42
0.0064259 Eth
$5,883,149.00
274,689.660 LINK
1.3237%
21
QMall
LINK-USDT$21.40
0.0064195 Eth
$4,822,483.00
213,760.657 LINK
1.0301%
22
LBank
LINK-USDT$21.39
0.0064165 Eth
$4,560,358.00
213,186.860 LINK
1.0273%
23
KuCoin
LINK-USDT$21.43
0.0064222 Eth
$3,908,515.00
182,412.410 LINK
0.8790%
24
Kraken
LINK-USD$21.45
0.0064295 Eth
$3,727,599.00
173,814.314 LINK
0.8376%
25
Dex-Trade
LINK-USDT$21.42
0.0064259 Eth
$3,692,301.00
172,391.369 LINK
0.8307%
26
FMCPAY
LINK-USDT$21.54
0.0064533 Eth
$3,466,643.00
153,685.569 LINK
0.7406%
27
Bitvavo
LINK-EUR$21.51
0.0064410 Eth
$2,931,869.00
136,283.529 LINK
0.6567%
28
Dcoin
LINK-USDT$21.41
0.0064226 Eth
$2,368,853.00
110,642.000 LINK
0.5332%
29
Coinbase Exchange
LINK-GBP$21.42
0.0064225 Eth
$2,066,331.00
96,455.220 LINK
0.4648%
30
PointPay
LINK-USDT$21.39
0.0064165 Eth
$1,961,064.00
86,904.335 LINK
0.4188%
31
CoinEx
LINK-USDT$21.48
0.0064424 Eth
$1,861,693.00
83,029.398 LINK
0.4001%
32
EXMO
LINK-USDT$21.45
0.0064300 Eth
$1,759,671.00
82,045.032 LINK
0.3954%
33
Coinbase Exchange
LINK-USDT$21.50
0.0064480 Eth
$1,614,809.00
75,119.209 LINK
0.3620%
34
Bybit
LINK-USDC$21.46
0.0064308 Eth
$1,600,336.00
71,291.497 LINK
0.3435%
35
FMCPAY
LINK-BTC$21.43
0.0064265 Eth
$1,546,259.00
69,286.200 LINK
0.3339%
36
FMCPAY
LINK-ETH$21.38
0.0064120 Eth
$1,524,810.00
67,968.640 LINK
0.3275%
37
Coinbase Exchange
LINK-ETH$21.40
0.0064205 Eth
$1,518,641.00
70,948.750 LINK
0.3419%
38
Coinbase Exchange
LINK-EUR$21.45
0.0064293 Eth
$1,513,180.00
70,560.150 LINK
0.3400%
39
WhiteBIT
LINK-BTC$21.49
0.0064466 Eth
$1,418,145.00
65,999.680 LINK
0.3180%
40
Phemex
LINK-USDT$21.50
0.0064510 Eth
$1,322,509.00
61,521.990 LINK
0.2965%
41
WhiteBIT
LINK-TRY$21.57
0.0064709 Eth
$1,292,361.00
59,909.090 LINK
0.2887%
42
EarnBIT
LINK-USDT$21.38
0.0064132 Eth
$1,134,568.00
50,393.213 LINK
0.2428%
43
tanX
LINK-USDC$21.46
0.0064383 Eth
$1,129,636.00
49,975.970 LINK
0.2408%
44
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$21.42
0.0064257 Eth
$1,082,962.00
84,200.246 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.4058%
45
Bitbank
LINK-JPY$21.52
0.0064509 Eth
$1,048,994.00
48,751.080 LINK
0.2349%
46
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.44
0.0064301 Eth
$956,992.00
42,634.188 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.2054%
47
Gemini
LINK-USD$21.41
0.0064209 Eth
$924,903.00
43,207.270 LINK
0.2082%
48
BigONE
LINK-USDT$21.42
0.0064258 Eth
$921,321.00
43,004.710 LINK
0.2072%
49
BitStorage
LINK-USDT$21.51
0.0064510 Eth
$891,733.00
41,453.620 LINK
0.1998%
50
Binance
LINK-TRY$21.71
0.0065012 Eth
$743,672.00
32,851.750 LINK
0.1583%
51
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$21.41
0.0064225 Eth
$597,451.00
26,841.658 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1293%
52
Binance
LINK-EUR$21.41
0.0064234 Eth
$584,462.00
25,829.170 LINK
0.1245%
53
Koinpark
LINK-USDT$21.41
0.0064226 Eth
$574,395.00
26,828.277 LINK
0.1293%
54
itBit
LINK-USD$21.55
0.0064586 Eth
$533,570.00
24,759.630 LINK
0.1193%
55
Quickswap (v3)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.38
0.0064110 Eth
$511,126.00
22,688.178 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.1093%
56
WhiteBIT
LINK-EUR$21.43
0.0064281 Eth
$510,631.00
23,832.920 LINK
0.1148%
57
GMO Japan
LINK-JPY$21.58
0.0064818 Eth
$445,450.00
20,641.300 LINK
0.0995%
58
HashKey Exchange
LINK-USD$21.65
0.0064853 Eth
$436,659.00
19,058.656 LINK
0.0918%
59
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$21.51
0.0064520 Eth
$402,928.00
17,733.051 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0855%
60
Slex
LINK-ETH$21.40
0.0064199 Eth
$383,534.00
17,082.630 LINK
0.0823%
61
Uniswap V3 (Polygon)
0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39$21.44
0.0064301 Eth
$374,484.00
396,929.045 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359
1.9127%
62
BitMart
LINK-BTC$21.38
0.0064096 Eth
$357,776.00
16,730.640 LINK
0.0806%
63
BitDelta
LINK-USDT$21.38
0.0064132 Eth
$284,851.00
12,585.000 LINK
0.0606%
64
OKX
LINK-USDC$21.42
0.0064216 Eth
$274,514.00
12,185.700 LINK
0.0587%
65
Coinbase Exchange
LINK-BTC$21.41
0.0064195 Eth
$232,822.00
10,873.110 LINK
0.0524%
66
Bitci TR
LINK-TRY$21.51
0.0064435 Eth
$229,989.00
10,084.490 LINK
0.0486%
67
LATOKEN
LINK-BTC$21.40
0.0064203 Eth
$213,630.00
9,982.834 LINK
0.0481%
68
Hotcoin
LINK-BTC$21.41
0.0064231 Eth
$200,772.00
9,378.200 LINK
0.0452%
69
DeGate
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$21.44
0.0064335 Eth
$195,889.00
8,625.626 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0416%
70
BitStorage
LINK-ETH$21.45
0.0064380 Eth
$183,719.00
8,563.300 LINK
0.0413%
71
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$21.58
0.0064742 Eth
$170,449.00
7,502.445 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0362%
72
Bitso
LINK-USD$21.45
0.0064333 Eth
$165,289.00
7,706.535 LINK
0.0371%
73
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$21.39
0.0064166 Eth
$160,579.00
7,213.615 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0348%
74
PointPay
LINK-BTC$21.47
0.0064390 Eth
$159,357.00
7,160.259 LINK
0.0345%
75
BitMart
LINK-ETH$21.38
0.0064097 Eth
$150,993.00
7,060.700 LINK
0.0340%
76
Bitkub
LINK-THB$21.66
0.0064948 Eth
$134,133.00
6,191.590 LINK
0.0298%
77
KuCoin
LINK-USDC$21.39
0.0064117 Eth
$107,896.00
5,043.792 LINK
0.0243%
78
Uniswap V3 (Optimism)
0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006$21.73
0.0065193 Eth
$102,677.00
4,574.840 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6
0.0220%
79
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$21.40
0.0064178 Eth
$101,580.00
4,587.705 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0221%
80
Kanga
LINK-PLN$21.55
0.0064637 Eth
$97,262.00
0.000 LINK
0.0000%
81
Uniswap V3 (Arbitrum One)
0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4$21.54
0.0064619 Eth
$96,474.00
102,022.214 0XAF88D065E77C8CC2239327C5EDB3A432268E5831
0.4916%
82
Kraken
LINK-GBP$21.46
0.0064339 Eth
$95,332.00
4,442.207 LINK
0.0214%
83
Coins.ph
LINK-PHP$21.62
0.0064848 Eth
$82,333.00
3,598.419 LINK
0.0173%
84
Mercado Bitcoin
LINK-BRL$21.66
0.0064927 Eth
$80,859.00
3,733.674 LINK
0.0180%
85
Binance US
LINK-USDT$21.48
0.0064464 Eth
$80,193.00
3,734.110 LINK
0.0180%
86
Uniswap V3 (Ethereum)
0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA$21.59
0.0064768 Eth
$73,968.00
5,676.819 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984
0.0274%
87
Hotcoin
LINK-ETH$21.38
0.0064143 Eth
$71,763.00
3,356.180 LINK
0.0162%
88
EXMO
LINK-BTC$21.58
0.0064692 Eth
$67,261.00
3,117.068 LINK
0.0150%
89
KuCoin
LINK-BTC$21.39
0.0064121 Eth
$64,172.00
2,999.659 LINK
0.0145%
90
Uniswap V3 (Arbitrum One)
0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F$21.50
0.0064497 Eth
$60,886.00
2,727.373 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4
0.0131%
91
Uniswap V3 (Ethereum)
0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7$21.43
0.0064302 Eth
$41,159.00
1,816.639 0X514910771AF9CA656AF840DFF83E8264ECF986CA
0.0088%
92
Kraken
LINK-AUD$21.59
0.0064722 Eth
$40,637.00
1,882.381 LINK
0.0091%
93
Gemini
LINK-BTC$21.57
0.0064695 Eth
$31,975.00
1,482.512 LINK
0.0071%
94
Uniswap V3 (Polygon)
0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6$21.44
0.0064304 Eth
$26,758.00
1,192.232 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39
0.0057%
95
THENA FUSION
0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD$21.50
0.0064462 Eth
$22,902.00
31.894 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827
0.0002%
96
zondacrypto
LINK-PLN$21.78
0.0065301 Eth
$22,576.00
1,036.473 LINK
0.0050%
97
Bitexen
LINK-TRY$21.48
0.0064341 Eth
$20,126.00
937.070 LINK
0.0045%
98
KuCoin
LINK-KCS$21.41
0.0064163 Eth
$20,103.00
939.061 LINK
0.0045%
99
Kanga
LINK-USDT$21.50
0.0064453 Eth
$14,779.47
0.000 LINK
0.0000%
100
Uniswap V3 (Optimism)
0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6$21.63
0.0064862 Eth
$1,000.45
1,049.119 0X0B2C639C533813F4AA9D7837CAF62653D097FF85
0.0051%

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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