ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
729,586 ( 0.017%)
Market
Price
$23.14 @ 0.006387 ETH (-1.81%)
Onchain Market Cap
$23,140,000,000.00
Circulating Supply Market Cap
$14,602,011,793.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
100 LINKValue
$2,314.00 ( ~0.638707747936362 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Websea | LINK-USDT | $23.22 0.0064149 Eth | $61,484,431.00 0.000 LINK | 0.0000% |
2 | Binance | LINK-USDT | $23.16 0.0063998 Eth | $60,870,114.00 2,604,665.530 LINK | 17.4008% |
3 | Coinbase Exchange | LINK-USD | $23.19 0.0064067 Eth | $27,770,279.00 1,197,510.970 LINK | 8.0001% |
4 | Slex | LINK-USDT | $23.20 0.0064103 Eth | $24,171,347.00 1,032,832.510 LINK | 6.9000% |
5 | WhiteBIT | LINK-USDT | $23.21 0.0064041 Eth | $20,031,070.00 862,920.290 LINK | 5.7648% |
6 | Bybit | LINK-USDT | $23.18 0.0063977 Eth | $17,015,307.00 727,681.245 LINK | 4.8614% |
7 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $23.15 0.0063953 Eth | $16,371,835.00 698,990.756 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 4.6697% |
8 | WEEX | LINK-USDT | $23.20 0.0064023 Eth | $15,977,993.00 682,745.380 LINK | 4.5612% |
9 | MEXC | LINK-USDT | $23.20 0.0064074 Eth | $15,811,076.00 681,365.480 LINK | 4.5519% |
10 | P2B | LINK-USDT | $23.14 0.0063936 Eth | $12,115,162.00 523,623.940 LINK | 3.4981% |
11 | CoinW | LINK-USDT | $23.22 0.0064108 Eth | $10,832,674.00 466,516.170 LINK | 3.1166% |
12 | OKX | LINK-USDT | $23.16 0.0063920 Eth | $10,091,712.00 431,433.126 LINK | 2.8822% |
13 | Gate.io | LINK-USDT | $23.16 0.0063931 Eth | $9,077,856.00 388,920.840 LINK | 2.5982% |
14 | BVOX | LINK-USDT | $23.20 0.0064019 Eth | $8,800,468.00 375,818.700 LINK | 2.5107% |
15 | HTX | LINK-USDT | $23.17 0.0063930 Eth | $7,245,162.00 309,727.322 LINK | 2.0692% |
16 | Deepcoin | LINK-USDT | $23.17 0.0063950 Eth | $6,458,541.00 279,549.240 LINK | 1.8676% |
17 | Biconomy.com | LINK-USDT | $23.22 0.0064048 Eth | $6,129,972.00 261,873.550 LINK | 1.7495% |
18 | XT.COM | LINK-USDT | $23.20 0.0064074 Eth | $6,097,277.00 260,677.960 LINK | 1.7415% |
19 | Azbit | LINK-USDT | $23.18 0.0064067 Eth | $6,071,221.00 259,549.564 LINK | 1.7340% |
20 | Coinstore | LINK-USDT | $23.19 0.0064055 Eth | $5,630,418.00 240,671.180 LINK | 1.6078% |
21 | Bithumb | LINK-KRW | $23.29 0.0064266 Eth | $4,626,633.00 198,614.855 LINK | 1.3269% |
22 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.14 0.0063889 Eth | $3,929,601.00 168,563.278 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 1.1261% |
23 | BYDFi | LINK-USDT | $23.16 0.0063996 Eth | $3,918,366.00 169,158.800 LINK | 1.1301% |
24 | LATOKEN | LINK-USDT | $23.11 0.0063866 Eth | $2,966,233.00 128,354.629 LINK | 0.8575% |
25 | Dex-Trade | LINK-USDT | $23.20 0.0064094 Eth | $1,946,427.00 83,880.710 LINK | 0.5604% |
26 | Hotcoin | LINK-USDT | $23.19 0.0063995 Eth | $1,944,959.00 83,852.860 LINK | 0.5602% |
27 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.16 0.0063935 Eth | $1,933,798.00 83,061.173 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.5549% |
28 | Bitvavo | LINK-EUR | $23.14 0.0063953 Eth | $1,879,452.00 81,226.093 LINK | 0.5426% |
29 | Dcoin | LINK-USDT | $23.18 0.0063984 Eth | $1,813,078.00 78,226.000 LINK | 0.5226% |
30 | CoinEx | LINK-USDT | $23.19 0.0063969 Eth | $1,809,589.00 77,260.808 LINK | 0.5161% |
31 | KuCoin | LINK-USDT | $23.19 0.0064008 Eth | $1,748,250.00 75,400.370 LINK | 0.5037% |
32 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.18 0.0063963 Eth | $1,091,247.00 46,815.997 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.3128% |
33 | Coinbase Exchange | LINK-EUR | $23.20 0.0064071 Eth | $1,055,406.00 45,484.500 LINK | 0.3039% |
34 | PointPay | LINK-USDT | $23.18 0.0064020 Eth | $960,735.00 41,096.220 LINK | 0.2745% |
35 | tanX | LINK-USDC | $23.17 0.0063976 Eth | $921,301.00 39,391.080 LINK | 0.2632% |
36 | EXMO | LINK-USDT | $23.18 0.0063955 Eth | $836,243.00 36,076.523 LINK | 0.2410% |
37 | Bitstamp | LINK-USD | $23.21 0.0064039 Eth | $783,883.00 33,773.485 LINK | 0.2256% |
38 | WhiteBIT | LINK-TRY | $23.22 0.0064220 Eth | $709,841.00 30,565.620 LINK | 0.2042% |
39 | Bitstamp | LINK-EUR | $23.17 0.0063936 Eth | $696,502.00 30,056.941 LINK | 0.2008% |
40 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.13 0.0063855 Eth | $663,674.00 28,404.649 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1898% |
41 | WhiteBIT | LINK-BTC | $23.22 0.0064081 Eth | $638,409.00 27,495.520 LINK | 0.1837% |
42 | Gemini | LINK-USD | $23.14 0.0063850 Eth | $636,795.00 27,517.666 LINK | 0.1838% |
43 | Bitbank | LINK-JPY | $23.20 0.0064153 Eth | $572,232.00 24,661.614 LINK | 0.1648% |
44 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $23.15 0.0063911 Eth | $547,828.00 23,751.839 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1587% |
45 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $23.20 0.0064002 Eth | $465,887.00 470,265.049 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 3.1417% |
46 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.13 0.0063891 Eth | $441,899.00 19,002.971 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1270% |
47 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $23.15 0.0063953 Eth | $417,858.00 27,964.984 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.1868% |
48 | Coinbase Exchange | LINK-GBP | $23.17 0.0063972 Eth | $413,552.00 17,850.160 LINK | 0.1193% |
49 | Bitbegin | LINK-USDT | $23.18 0.0064059 Eth | $410,969.00 17,550.536 LINK | 0.1172% |
50 | Slex | LINK-ETH | $23.20 0.0064145 Eth | $372,840.00 15,991.890 LINK | 0.1068% |
51 | BigONE | LINK-USDT | $23.15 0.0063871 Eth | $328,125.00 14,174.280 LINK | 0.0947% |
52 | Coinbase Exchange | LINK-ETH | $23.23 0.0064134 Eth | $326,449.00 14,054.910 LINK | 0.0939% |
53 | HashKey Exchange | LINK-USD | $23.17 0.0063954 Eth | $308,714.00 13,251.566 LINK | 0.0885% |
54 | BitMart | LINK-BTC | $23.18 0.0063959 Eth | $262,842.00 11,338.320 LINK | 0.0757% |
55 | Bitci TR | LINK-TRY | $23.17 0.0063859 Eth | $242,184.00 10,333.480 LINK | 0.0690% |
56 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $23.09 0.0063755 Eth | $229,722.00 233,057.775 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.5570% |
57 | OKX | LINK-USDC | $23.18 0.0063965 Eth | $223,744.00 9,582.521 LINK | 0.0640% |
58 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $23.16 0.0063939 Eth | $200,070.00 8,543.983 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0571% |
59 | Coinone | LINK-KRW | $23.28 0.0064235 Eth | $173,607.00 7,457.081 LINK | 0.0498% |
60 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $23.13 0.0063831 Eth | $126,687.00 5,426.269 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0363% |
61 | Bitkub | LINK-THB | $23.00 0.0063486 Eth | $124,590.00 5,417.613 LINK | 0.0362% |
62 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $23.12 0.0063811 Eth | $120,375.00 5,220.700 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0349% |
63 | LATOKEN | LINK-BTC | $23.20 0.0064137 Eth | $117,466.00 5,063.712 LINK | 0.0338% |
64 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.20 0.0064049 Eth | $107,706.00 4,605.064 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0308% |
65 | BitMart | LINK-ETH | $23.19 0.0063976 Eth | $85,416.00 3,683.400 LINK | 0.0246% |
66 | Bitexen | LINK-TRY | $23.03 0.0063649 Eth | $79,034.00 3,431.315 LINK | 0.0229% |
67 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $23.21 0.0064078 Eth | $76,202.00 3,262.174 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0218% |
68 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $23.10 0.0063779 Eth | $74,395.00 3,177.545 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0212% |
69 | Hotcoin | LINK-BTC | $23.25 0.0064151 Eth | $63,276.00 2,720.970 LINK | 0.0182% |
70 | Gemini | LINK-BTC | $23.14 0.0063849 Eth | $58,212.00 2,515.525 LINK | 0.0168% |
71 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.16 0.0063883 Eth | $57,213.00 57,908.207 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.3869% |
72 | Binance US | LINK-USDT | $23.13 0.0063805 Eth | $53,439.00 2,310.837 LINK | 0.0154% |
73 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $23.16 0.0063899 Eth | $47,042.00 2,015.994 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0135% |
74 | CoinEx | LINK-USDC | $23.24 0.0064190 Eth | $25,038.00 1,108.362 LINK | 0.0074% |
75 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $23.23 0.0064117 Eth | $22,927.00 29.996 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0002% |
76 | Hotcoin | LINK-ETH | $23.23 0.0064134 Eth | $21,833.00 939.920 LINK | 0.0063% |
77 | Korbit | LINK-KRW | $23.24 0.0064122 Eth | $19,378.37 828.634 LINK | 0.0055% |
78 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $23.13 0.0063861 Eth | $19,339.93 826.510 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0055% |
79 | PancakeSwap V1 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.17 0.0064005 Eth | $16,049.97 769.496 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0051% |
80 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $23.15 0.0063953 Eth | $15,208.62 650.473 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0043% |
81 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $23.22 0.0064155 Eth | $14,580.60 624.575 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0042% |
82 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.15 0.0063906 Eth | $13,836.12 593.807 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0040% |
83 | Dex-Trade | LINK-ETH | $23.26 0.0064189 Eth | $12,564.88 540.240 LINK | 0.0036% |
84 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $23.14 0.0063871 Eth | $11,341.88 486.026 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0032% |
85 | KuCoin | LINK-KCS | $23.15 0.0063916 Eth | $9,955.63 429.995 LINK | 0.0029% |
86 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $23.25 0.0064188 Eth | $9,582.24 411.036 0X5947BB275C521040051D82396192181B413227A3 | 0.0027% |
87 | Biswap V3 | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.17 0.0063976 Eth | $8,845.64 380.342 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0025% |
88 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $23.15 0.0063919 Eth | $6,573.33 280.802 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0019% |
89 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.16 0.0063978 Eth | $5,512.71 5,567.701 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0372% |
90 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $23.20 0.0064098 Eth | $5,428.25 5,487.547 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.0367% |
91 | CoinEx | LINK-BTC | $23.21 0.0064081 Eth | $4,501.55 191.712 LINK | 0.0013% |
92 | PancakeSwap V3 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.17 0.0064003 Eth | $3,488.04 149.483 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0010% |
93 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $23.16 0.0064018 Eth | $2,509.14 110.173 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0007% |
94 | Uniswap V3 (Arbitrum One) | 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.15 0.0063906 Eth | $2,323.25 440.396 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8 | 0.0029% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $23.26 0.0064266 Eth | $1,098.05 46.963 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0003% |
96 | Uniswap V3 (Optimism) | 0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | $22.98 0.0063433 Eth | $783.48 797.778 0X0B2C639C533813F4AA9D7837CAF62653D097FF85 | 0.0053% |
97 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $23.29 0.0064326 Eth | $561.17 23.875 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0002% |
98 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.16 0.0063978 Eth | $480.80 1.391 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0000% |
99 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $23.34 0.0064408 Eth | $266.11 11.334 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0001% |
100 | Osmosis | IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049-UOSMO | $23.25 0.0064145 Eth | $236.87 10.188 IBC/D3327A763C23F01EC43D1F0DB3CEFEC390C362569B6FD191F40A5192F8960049 | 0.0001% |
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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