ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
722,375 ( 0.000%)
Market
Price
$11.17 @ 0.004483 ETH (-1.52%)
Onchain Market Cap
$11,170,000,000.00
Circulating Supply Market Cap
$7,004,574,695.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $11.18 0.0044869 Eth | $25,783,274.00 2,304,115.630 LINK | 16.9995% |
2 | Bitget | LINK-USDT | $11.19 0.0044910 Eth | $9,100,926.00 810,868.714 LINK | 5.9825% |
3 | Bybit | LINK-USDT | $11.19 0.0044914 Eth | $8,220,680.00 734,007.117 LINK | 5.4154% |
4 | Coinbase Exchange | LINK-USD | $11.19 0.0044905 Eth | $7,543,947.00 674,409.680 LINK | 4.9757% |
5 | BTSE | LINK-USDT | $11.19 0.0044929 Eth | $5,450,997.00 487,044.307 LINK | 3.5934% |
6 | Slex | LINK-USDT | $11.18 0.0044868 Eth | $5,413,846.00 482,223.320 LINK | 3.5578% |
7 | P2B | LINK-USDT | $11.15 0.0044783 Eth | $5,373,820.00 482,082.930 LINK | 3.5568% |
8 | OKX | LINK-USDT | $11.18 0.0044892 Eth | $5,328,977.00 475,392.707 LINK | 3.5074% |
9 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.13 0.0044678 Eth | $4,530,597.00 404,870.930 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.9871% |
10 | Azbit | LINK-USDT | $11.15 0.0044802 Eth | $4,000,986.00 357,285.230 LINK | 2.6360% |
11 | WEEX | LINK-USDT | $11.18 0.0044848 Eth | $3,766,995.00 335,967.820 LINK | 2.4787% |
12 | Ourbit | LINK-USDT | $11.18 0.0044877 Eth | $3,742,480.00 334,090.130 LINK | 2.4649% |
13 | Biconomy.com | LINK-USDT | $11.19 0.0044906 Eth | $3,623,469.00 323,022.420 LINK | 2.3832% |
14 | DigiFinex | LINK-USDT | $11.18 0.0044898 Eth | $3,503,670.00 313,266.460 LINK | 2.3112% |
15 | Crypto.com Exchange | LINK-USDT | $11.18 0.0044885 Eth | $3,209,414.00 287,043.140 LINK | 2.1178% |
16 | BVOX | LINK-USDT | $11.18 0.0044880 Eth | $3,167,776.00 282,376.570 LINK | 2.0833% |
17 | Binance | LINK-ETH | $11.17 0.0044814 Eth | $2,806,307.00 251,514.160 LINK | 1.8556% |
18 | Deepcoin | LINK-USDT | $11.18 0.0044870 Eth | $2,632,086.00 236,003.620 LINK | 1.7412% |
19 | XT.COM | LINK-USDT | $11.17 0.0044825 Eth | $2,579,675.00 230,556.960 LINK | 1.7010% |
20 | FameEX | LINK-USDT | $11.18 0.0044889 Eth | $2,574,824.00 230,083.983 LINK | 1.6975% |
21 | Gate.io | LINK-USDT | $11.18 0.0044885 Eth | $2,514,981.00 224,931.790 LINK | 1.6595% |
22 | Crypto.com Exchange | LINK-USD | $11.18 0.0044865 Eth | $2,488,939.00 222,703.910 LINK | 1.6431% |
23 | Bitunix | LINK-USDT | $11.17 0.0044845 Eth | $2,350,728.00 210,391.340 LINK | 1.5522% |
24 | Hotcoin | LINK-USDT | $11.18 0.0044868 Eth | $2,052,665.00 183,645.810 LINK | 1.3549% |
25 | C-Patex | LINK-USDT | $11.18 0.0044862 Eth | $1,943,076.00 173,799.703 LINK | 1.2823% |
26 | CoinW | LINK-USDT | $11.17 0.0044841 Eth | $1,757,859.00 157,362.430 LINK | 1.1610% |
27 | Coinstore | LINK-USDT | $11.18 0.0044860 Eth | $1,740,866.00 155,620.510 LINK | 1.1482% |
28 | KuCoin | LINK-USDT | $11.19 0.0044923 Eth | $1,733,516.00 154,905.364 LINK | 1.1429% |
29 | AscendEX (BitMax) | LINK-USDT | $11.15 0.0044746 Eth | $1,730,941.00 155,285.000 LINK | 1.1457% |
30 | LBank | LINK-USDT | $11.19 0.0044910 Eth | $1,623,366.00 145,103.940 LINK | 1.0706% |
31 | WhiteBIT | LINK-BTC | $11.14 0.0044763 Eth | $1,461,948.00 131,183.150 LINK | 0.9679% |
32 | BYDFi | LINK-USDT | $11.16 0.0044818 Eth | $1,254,144.00 112,408.720 LINK | 0.8293% |
33 | Kraken | LINK-USD | $11.17 0.0044841 Eth | $1,223,419.00 109,527.252 LINK | 0.8081% |
34 | Niza Global | LINK-USD | $11.16 0.0044819 Eth | $1,170,993.00 104,847.658 LINK | 0.7736% |
35 | Trubit | LINK-USDT | $11.17 0.0044845 Eth | $1,011,872.00 90,278.870 LINK | 0.6661% |
36 | HashKey Global | LINK-USDT | $11.18 0.0044865 Eth | $915,539.00 81,133.655 LINK | 0.5986% |
37 | Dex-Trade | LINK-USDT | $11.16 0.0044824 Eth | $828,712.00 74,277.740 LINK | 0.5480% |
38 | XT.COM | LINK-ETH | $11.17 0.0044842 Eth | $785,706.00 70,465.640 LINK | 0.5199% |
39 | Azbit | LINK-ETH | $11.16 0.0044818 Eth | $744,975.00 66,741.358 LINK | 0.4924% |
40 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.15 0.0044771 Eth | $584,604.00 52,375.435 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.3864% |
41 | Bitvavo | LINK-EUR | $11.24 0.0045124 Eth | $520,879.00 46,333.092 LINK | 0.3418% |
42 | LATOKEN | LINK-USDT | $11.16 0.0044780 Eth | $491,724.00 44,072.120 LINK | 0.3252% |
43 | EXMO | LINK-USDT | $11.19 0.0044934 Eth | $477,427.00 42,653.169 LINK | 0.3147% |
44 | PointPay | LINK-USDT | $11.18 0.0044869 Eth | $431,793.00 38,588.289 LINK | 0.2847% |
45 | Coinbase Exchange | LINK-USDT | $11.17 0.0044824 Eth | $408,084.00 36,539.696 LINK | 0.2696% |
46 | Bybit | LINK-USDC | $11.18 0.0044878 Eth | $369,213.00 32,925.234 LINK | 0.2429% |
47 | CoinEx | LINK-USDT | $11.17 0.0044859 Eth | $365,249.00 32,638.872 LINK | 0.2408% |
48 | Pionex | LINK-USDT | $11.18 0.0044856 Eth | $356,621.00 31,855.000 LINK | 0.2350% |
49 | tanX | LINK-USDC | $11.16 0.0044811 Eth | $342,244.00 30,472.080 LINK | 0.2248% |
50 | LATOKEN | LINK-BTC | $11.18 0.0044864 Eth | $315,091.00 28,189.091 LINK | 0.2080% |
51 | Phemex | LINK-USDT | $11.18 0.0044869 Eth | $261,299.00 23,378.380 LINK | 0.1725% |
52 | WhiteBIT | LINK-EUR | $11.20 0.0044945 Eth | $261,255.00 23,331.590 LINK | 0.1721% |
53 | Niza Global | LINK-EUR | $11.20 0.0045007 Eth | $245,386.00 21,836.372 LINK | 0.1611% |
54 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.12 0.0044626 Eth | $235,695.00 21,095.375 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1556% |
55 | BigONE | LINK-USDT | $11.14 0.0044716 Eth | $219,483.00 19,700.330 LINK | 0.1453% |
56 | BitMart | LINK-BTC | $11.17 0.0044850 Eth | $195,561.00 17,503.440 LINK | 0.1291% |
57 | Hotcoin | LINK-ETH | $11.15 0.0044780 Eth | $192,565.00 17,274.350 LINK | 0.1274% |
58 | Binance | LINK-EUR | $11.27 0.0045207 Eth | $169,336.00 15,051.350 LINK | 0.1110% |
59 | BitStorage | LINK-ETH | $11.16 0.0044783 Eth | $158,000.00 14,160.870 LINK | 0.1045% |
60 | Coinbase Exchange | LINK-EUR | $11.23 0.0045094 Eth | $156,538.00 13,935.110 LINK | 0.1028% |
61 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.20 0.0044963 Eth | $137,295.00 12,276.358 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0906% |
62 | BitDelta | LINK-USDT | $11.16 0.0044834 Eth | $132,574.00 11,816.000 LINK | 0.0872% |
63 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.18 0.0044874 Eth | $122,022.00 11,010.842 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0812% |
64 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $11.18 0.0044878 Eth | $112,425.00 10,040.346 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0741% |
65 | OKX | LINK-USDC | $11.15 0.0044751 Eth | $112,183.00 10,037.960 LINK | 0.0741% |
66 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.18 0.0044895 Eth | $111,995.00 10,014.969 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0739% |
67 | GMO Japan | LINK-JPY | $11.16 0.0044779 Eth | $96,411.00 8,642.800 LINK | 0.0638% |
68 | Slex | LINK-BTC | $11.18 0.0044892 Eth | $94,348.00 8,418.300 LINK | 0.0621% |
69 | Bitbank | LINK-JPY | $11.22 0.0045057 Eth | $93,792.00 8,356.137 LINK | 0.0617% |
70 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.18 0.0044888 Eth | $67,646.00 67,895.705 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.5009% |
71 | Slex | LINK-ETH | $11.17 0.0044833 Eth | $65,050.00 5,816.730 LINK | 0.0429% |
72 | BYDFi | LINK-USDC | $11.15 0.0044778 Eth | $63,955.00 5,737.650 LINK | 0.0423% |
73 | PointPay | LINK-BTC | $11.16 0.0044817 Eth | $60,943.00 5,435.850 LINK | 0.0401% |
74 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.11 0.0044579 Eth | $51,190.00 51,587.110 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.3806% |
75 | KuCoin | LINK-USDC | $11.19 0.0044930 Eth | $46,286.00 4,135.448 LINK | 0.0305% |
76 | Bitso | LINK-USD | $11.17 0.0044831 Eth | $35,172.00 3,148.109 LINK | 0.0232% |
77 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $11.12 0.0044626 Eth | $32,144.00 2,885.608 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0213% |
78 | Binance US | LINK-USDT | $11.15 0.0044745 Eth | $26,894.00 2,412.409 LINK | 0.0178% |
79 | Bitcointry | LINK-USDT | $11.17 0.0044845 Eth | $26,122.00 2,333.619 LINK | 0.0172% |
80 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.18 0.0044888 Eth | $26,039.00 2,320.137 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0171% |
81 | EXMO | LINK-BTC | $11.18 0.0044892 Eth | $25,879.00 2,314.183 LINK | 0.0171% |
82 | Coinbase Exchange | LINK-BTC | $11.14 0.0044722 Eth | $25,020.00 2,245.450 LINK | 0.0166% |
83 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $11.12 0.0044634 Eth | $21,205.00 1,902.292 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0140% |
84 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.15 0.0044771 Eth | $16,695.54 16,813.333 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1240% |
85 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.18 0.0044881 Eth | $14,138.77 1,260.161 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0093% |
86 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $11.12 0.0044634 Eth | $11,533.77 1,029.692 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0076% |
87 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.12 0.0044626 Eth | $10,075.60 10,137.639 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0748% |
88 | PancakeSwap V3 (BSC) | 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.18 0.0044895 Eth | $9,746.55 5,679.328 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82 | 0.0419% |
89 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.16 0.0044801 Eth | $8,412.04 751.893 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0055% |
90 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.15 0.0044775 Eth | $7,871.31 702.735 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0052% |
91 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.18 0.0044888 Eth | $7,208.49 650.718 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0048% |
92 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.16 0.0044786 Eth | $6,192.51 10.024 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0001% |
93 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $11.14 0.0044700 Eth | $3,047.60 271.321 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0020% |
94 | Osmosis | IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049-UOSMO | $11.24 0.0045115 Eth | $2,962.23 263.581 IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049 | 0.0019% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $11.15 0.0044732 Eth | $2,748.87 246.371 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0018% |
96 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $11.17 0.0044842 Eth | $2,429.19 216.276 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0016% |
97 | CoinEx | LINK-BTC | $11.15 0.0044764 Eth | $2,008.75 178.845 LINK | 0.0013% |
98 | CoinEx | LINK-USDC | $11.17 0.0044822 Eth | $1,940.54 172.846 LINK | 0.0013% |
99 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $11.16 0.0044845 Eth | $543.14 49.145 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0004% |
100 | CEX.IO | LINK-USDT | $11.18 0.0044886 Eth | $280.34 25.100 LINK | 0.0002% |
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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