ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
728,395 ( 0.000%)
Market
Price
$20.27 @ 0.006080 ETH (-3.03%)
Onchain Market Cap
$20,270,000,000.00
Circulating Supply Market Cap
$12,777,412,000.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.000000048692320643 LINKValue
$0.00 ( ~0 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $20.23 0.0060710 Eth | $79,171,318.00 3,947,724.620 LINK | 21.4408% |
2 | Coinbase Exchange | LINK-USD | $20.26 0.0060775 Eth | $36,755,191.00 1,814,085.730 LINK | 9.8526% |
3 | Slex | LINK-USDT | $20.27 0.0060796 Eth | $20,605,360.00 1,026,525.320 LINK | 5.5752% |
4 | WhiteBIT | LINK-USDT | $20.27 0.0060800 Eth | $19,309,105.00 952,768.700 LINK | 5.1747% |
5 | Bitget | LINK-USDT | $20.23 0.0060695 Eth | $17,984,980.00 894,145.560 LINK | 4.8563% |
6 | Bybit | LINK-USDT | $20.24 0.0060731 Eth | $15,363,658.00 764,856.576 LINK | 4.1541% |
7 | MEXC | LINK-USDT | $20.23 0.0060708 Eth | $14,108,566.00 697,273.960 LINK | 3.7870% |
8 | CoinW | LINK-USDT | $20.23 0.0060718 Eth | $14,073,621.00 695,541.680 LINK | 3.7776% |
9 | OKX | LINK-USDT | $20.23 0.0060701 Eth | $10,412,133.00 518,386.653 LINK | 2.8154% |
10 | DigiFinex | LINK-USDT | $20.22 0.0060682 Eth | $10,007,413.00 494,827.120 LINK | 2.6875% |
11 | HTX | LINK-USDT | $20.23 0.0060708 Eth | $8,365,121.00 416,947.237 LINK | 2.2645% |
12 | XT.COM | LINK-USDT | $20.27 0.0060800 Eth | $7,923,719.00 394,952.120 LINK | 2.1451% |
13 | Azbit | LINK-USDT | $20.26 0.0060774 Eth | $7,892,855.00 393,398.316 LINK | 2.1366% |
14 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.34 0.0061014 Eth | $7,524,931.00 374,107.504 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.0318% |
15 | Coinstore | LINK-USDT | $20.29 0.0060851 Eth | $7,186,871.00 358,386.370 LINK | 1.9465% |
16 | Binance | LINK-FDUSD | $20.24 0.0060699 Eth | $6,754,132.00 336,040.320 LINK | 1.8251% |
17 | Bitunix | LINK-USDT | $20.27 0.0060820 Eth | $6,146,278.00 303,259.110 LINK | 1.6471% |
18 | Biconomy.com | LINK-USDT | $20.28 0.0060760 Eth | $5,163,149.00 257,212.629 LINK | 1.3970% |
19 | BYDFi | LINK-USDT | $20.26 0.0060710 Eth | $4,977,766.00 245,714.440 LINK | 1.3345% |
20 | Binance | LINK-USDC | $20.23 0.0060699 Eth | $4,646,652.00 231,148.880 LINK | 1.2554% |
21 | BTSE | LINK-USDT | $20.23 0.0060671 Eth | $4,154,863.00 205,415.703 LINK | 1.1156% |
22 | LBank | LINK-USDT | $20.19 0.0060598 Eth | $3,959,443.00 196,080.310 LINK | 1.0649% |
23 | LATOKEN | LINK-USDT | $20.23 0.0060693 Eth | $3,831,161.00 189,419.861 LINK | 1.0288% |
24 | QMall | LINK-USDT | $20.27 0.0060799 Eth | $3,204,677.00 159,873.758 LINK | 0.8683% |
25 | Kraken | LINK-USD | $20.24 0.0060742 Eth | $2,936,651.00 145,077.571 LINK | 0.7879% |
26 | KuCoin | LINK-USDT | $20.23 0.0060716 Eth | $2,923,321.00 144,478.913 LINK | 0.7847% |
27 | Hotcoin | LINK-USDT | $20.27 0.0060804 Eth | $2,683,861.00 132,421.120 LINK | 0.7192% |
28 | Dex-Trade | LINK-USDT | $20.27 0.0060796 Eth | $2,479,600.00 122,341.590 LINK | 0.6645% |
29 | CoinEx | LINK-USDT | $20.14 0.0060474 Eth | $1,953,888.00 97,577.981 LINK | 0.5300% |
30 | Dcoin | LINK-USDT | $20.24 0.0060717 Eth | $1,814,048.00 89,630.000 LINK | 0.4868% |
31 | Bitvavo | LINK-EUR | $20.28 0.0060826 Eth | $1,804,821.00 89,005.264 LINK | 0.4834% |
32 | PointPay | LINK-USDT | $20.28 0.0060825 Eth | $1,297,892.00 64,742.057 LINK | 0.3516% |
33 | EXMO | LINK-USDT | $20.22 0.0060671 Eth | $1,094,373.00 54,119.508 LINK | 0.2939% |
34 | Phemex | LINK-USDT | $20.18 0.0060568 Eth | $896,707.00 44,428.860 LINK | 0.2413% |
35 | Bitstamp | LINK-EUR | $20.30 0.0060899 Eth | $845,534.00 41,659.472 LINK | 0.2263% |
36 | Bitbank | LINK-JPY | $20.32 0.0060957 Eth | $809,077.00 39,813.381 LINK | 0.2162% |
37 | tanX | LINK-USDC | $20.32 0.0060968 Eth | $804,328.00 40,029.820 LINK | 0.2174% |
38 | WhiteBIT | LINK-BTC | $20.27 0.0060791 Eth | $747,025.00 36,860.130 LINK | 0.2002% |
39 | Bybit | LINK-USDC | $20.26 0.0060798 Eth | $676,996.00 33,716.823 LINK | 0.1831% |
40 | BitStorage | LINK-USDT | $20.27 0.0060734 Eth | $656,347.00 32,379.450 LINK | 0.1759% |
41 | Coinbase Exchange | LINK-EUR | $20.24 0.0060749 Eth | $646,675.00 31,943.150 LINK | 0.1735% |
42 | WhiteBIT | LINK-TRY | $20.36 0.0061069 Eth | $618,645.00 30,386.780 LINK | 0.1650% |
43 | Gemini | LINK-USD | $20.27 0.0060830 Eth | $598,887.00 29,540.806 LINK | 0.1604% |
44 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.29 0.0060856 Eth | $563,941.00 28,145.786 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1529% |
45 | Binance | LINK-TRY | $20.35 0.0061061 Eth | $541,331.00 26,863.970 LINK | 0.1459% |
46 | HashKey Exchange | LINK-USD | $20.31 0.0060851 Eth | $519,358.00 25,789.333 LINK | 0.1401% |
47 | GMO Japan | LINK-JPY | $20.30 0.0060905 Eth | $516,614.00 25,443.900 LINK | 0.1382% |
48 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.22 0.0060655 Eth | $505,545.00 25,084.047 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1362% |
49 | Coinbase Exchange | LINK-USDT | $20.28 0.0060828 Eth | $499,875.00 24,650.077 LINK | 0.1339% |
50 | EarnBIT | LINK-USDT | $20.25 0.0060745 Eth | $495,146.00 24,689.901 LINK | 0.1341% |
51 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.26 0.0060771 Eth | $470,334.00 468,067.710 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.5422% |
52 | BigONE | LINK-USDT | $20.16 0.0060409 Eth | $434,940.00 21,577.460 LINK | 0.1172% |
53 | KuCoin | LINK-USDC | $20.29 0.0060882 Eth | $400,284.00 19,729.255 LINK | 0.1072% |
54 | Kraken | LINK-ETH | $20.24 0.0060728 Eth | $386,073.00 19,077.037 LINK | 0.1036% |
55 | Bitbegin | LINK-USDT | $20.19 0.0060525 Eth | $380,139.00 18,924.123 LINK | 0.1028% |
56 | Slex | LINK-ETH | $20.26 0.0060776 Eth | $349,869.00 17,502.970 LINK | 0.0951% |
57 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $20.27 0.0060831 Eth | $349,415.00 16,980.398 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0922% |
58 | QMall | LINK-USDC | $20.26 0.0060701 Eth | $346,484.00 17,303.267 LINK | 0.0940% |
59 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $20.18 0.0060561 Eth | $335,395.00 16,652.437 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0904% |
60 | Coinbase Exchange | LINK-BTC | $20.27 0.0060812 Eth | $311,781.00 15,381.160 LINK | 0.0835% |
61 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $20.27 0.0060809 Eth | $297,863.00 14,806.623 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0804% |
62 | BitMart | LINK-BTC | $20.25 0.0060754 Eth | $275,704.00 13,616.380 LINK | 0.0740% |
63 | WhiteBIT | LINK-EUR | $20.22 0.0060639 Eth | $275,314.00 13,618.890 LINK | 0.0740% |
64 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.25 0.0060755 Eth | $263,912.00 13,181.677 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0716% |
65 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.29 0.0060852 Eth | $263,064.00 261,030.886 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.4177% |
66 | Bitci TR | LINK-TRY | $20.45 0.0061339 Eth | $207,217.00 10,274.040 LINK | 0.0558% |
67 | Coinbase Exchange | LINK-GBP | $20.26 0.0060805 Eth | $194,303.00 9,588.960 LINK | 0.0521% |
68 | BitMart | LINK-ETH | $20.25 0.0060771 Eth | $119,381.00 5,894.320 LINK | 0.0320% |
69 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $20.29 0.0060852 Eth | $118,103.00 5,851.635 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0318% |
70 | Coinbase Exchange | LINK-ETH | $20.26 0.0060779 Eth | $110,841.00 5,471.610 LINK | 0.0297% |
71 | OKX | LINK-USDC | $20.24 0.0060716 Eth | $102,245.00 5,090.387 LINK | 0.0276% |
72 | Hotcoin | LINK-BTC | $20.30 0.0060826 Eth | $97,214.00 4,789.380 LINK | 0.0260% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $20.29 0.0060856 Eth | $93,356.00 4,639.359 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0252% |
74 | BYDFi | LINK-USDC | $20.21 0.0060595 Eth | $92,641.00 4,583.810 LINK | 0.0249% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.26 0.0060758 Eth | $84,028.00 4,171.003 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0227% |
76 | Kraken | LINK-GBP | $20.28 0.0060869 Eth | $82,105.00 4,047.693 LINK | 0.0220% |
77 | Binance US | LINK-USDT | $20.22 0.0060609 Eth | $81,497.00 4,030.841 LINK | 0.0219% |
78 | Bitkub | LINK-THB | $20.26 0.0060775 Eth | $79,775.00 3,937.398 LINK | 0.0214% |
79 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.27 0.0060788 Eth | $68,631.00 3,430.046 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0186% |
80 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $20.24 0.0060721 Eth | $68,242.00 3,393.855 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0184% |
81 | EXMO | LINK-BTC | $20.23 0.0060710 Eth | $64,520.00 3,188.643 LINK | 0.0173% |
82 | Bitso | LINK-USD | $20.30 0.0060900 Eth | $54,493.00 2,684.508 LINK | 0.0146% |
83 | Mercado Bitcoin | LINK-BRL | $20.46 0.0061389 Eth | $45,709.00 2,234.337 LINK | 0.0121% |
84 | Hotcoin | LINK-ETH | $20.27 0.0060804 Eth | $34,413.00 1,697.930 LINK | 0.0092% |
85 | zondacrypto | LINK-PLN | $20.33 0.0060984 Eth | $34,210.00 1,682.691 LINK | 0.0091% |
86 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $20.26 0.0060769 Eth | $29,153.00 1,443.684 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0078% |
87 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.15 0.0060454 Eth | $25,104.00 1,255.235 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0068% |
88 | CoinEx | LINK-USDC | $20.19 0.0060499 Eth | $22,529.00 1,118.283 LINK | 0.0061% |
89 | KuCoin | LINK-BTC | $20.24 0.0060729 Eth | $21,695.00 1,071.988 LINK | 0.0058% |
90 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $20.26 0.0060788 Eth | $16,074.69 16,024.326 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0870% |
91 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $20.27 0.0060813 Eth | $15,515.83 765.677 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0042% |
92 | Dex-Trade | LINK-ETH | $20.28 0.0060750 Eth | $13,788.11 679.990 LINK | 0.0037% |
93 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $20.29 0.0060852 Eth | $11,764.99 583.830 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0032% |
94 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $20.29 0.0060852 Eth | $9,257.39 459.115 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0025% |
95 | CoinEx | LINK-BTC | $20.17 0.0060526 Eth | $7,574.60 376.680 LINK | 0.0020% |
96 | Bitexen | LINK-TRY | $20.16 0.0060474 Eth | $6,952.56 344.855 LINK | 0.0019% |
97 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $20.23 0.0060681 Eth | $6,904.81 340.722 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0019% |
98 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $20.19 0.0060549 Eth | $6,090.61 303.664 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0016% |
99 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912 | $20.39 0.0061151 Eth | $4,794.37 238.802 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0013% |
100 | Ace | LINK-USDT | $20.27 0.0060794 Eth | $3,323.74 165.210 LINK | 0.0009% |
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
- Callisto Network - April 14th, 2019 - Security Audit Report
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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