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ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
729,725 ( 0.002%)
Market
Price
$23.78 @ 0.006487 ETH (+2.07%)
Onchain Market Cap
$23,780,000,000.00
Circulating Supply Market Cap
$15,009,007,052.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
1,600.995300000000032768 LINKValue
$38,071.67 ( ~10.3855 Eth) [0.0002%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Coinbase Exchange | LINK-USD | $23.87 0.0065119 Eth | $28,918,295.00 1,211,643.470 LINK | 10.5925% |
2 | WhiteBIT | LINK-USDT | $23.81 0.0065004 Eth | $24,878,332.00 1,045,035.270 LINK | 9.1359% |
3 | Slex | LINK-USDT | $23.86 0.0065101 Eth | $23,970,178.00 1,025,530.010 LINK | 8.9654% |
4 | Bitget | LINK-USDT | $23.86 0.0065122 Eth | $20,515,481.00 877,348.530 LINK | 7.6700% |
5 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $23.92 0.0065265 Eth | $18,141,365.00 765,375.129 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 6.6911% |
6 | Bybit | LINK-USDT | $23.87 0.0065148 Eth | $18,044,282.00 771,401.144 LINK | 6.7438% |
7 | P2B | LINK-USDT | $23.82 0.0065013 Eth | $14,729,971.00 618,269.430 LINK | 5.4051% |
8 | CoinW | LINK-USDT | $23.81 0.0065020 Eth | $13,006,302.00 546,268.140 LINK | 4.7756% |
9 | OKX | LINK-USDT | $23.90 0.0065226 Eth | $11,266,788.00 481,200.818 LINK | 4.2068% |
10 | HTX | LINK-USDT | $23.87 0.0065134 Eth | $7,759,375.00 331,775.286 LINK | 2.9005% |
11 | XT.COM | LINK-USDT | $23.80 0.0064953 Eth | $7,080,342.00 302,817.800 LINK | 2.6473% |
12 | Azbit | LINK-USDT | $23.76 0.0064792 Eth | $7,043,896.00 301,240.259 LINK | 2.6335% |
13 | Coinstore | LINK-USDT | $23.78 0.0064949 Eth | $6,492,453.00 277,699.520 LINK | 2.4277% |
14 | Bithumb | LINK-KRW | $23.89 0.0065221 Eth | $4,839,983.00 202,565.220 LINK | 1.7709% |
15 | BYDFi | LINK-USDT | $23.92 0.0065286 Eth | $4,711,561.00 196,934.280 LINK | 1.7216% |
16 | BTSE | LINK-USDT | $23.87 0.0065150 Eth | $3,528,466.00 147,790.776 LINK | 1.2920% |
17 | LATOKEN | LINK-USDT | $23.80 0.0064989 Eth | $3,457,636.00 145,274.391 LINK | 1.2700% |
18 | Kraken | LINK-USD | $23.83 0.0065020 Eth | $2,983,658.00 125,202.472 LINK | 1.0945% |
19 | Hotcoin | LINK-USDT | $23.84 0.0065100 Eth | $2,594,892.00 108,867.510 LINK | 0.9517% |
20 | Dex-Trade | LINK-USDT | $23.79 0.0064985 Eth | $2,315,859.00 97,346.750 LINK | 0.8510% |
21 | Bitvavo | LINK-EUR | $23.76 0.0064817 Eth | $2,087,407.00 87,845.277 LINK | 0.7680% |
22 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.79 0.0064991 Eth | $2,050,378.00 87,011.178 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.7607% |
23 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.73 0.0064815 Eth | $2,010,935.00 85,470.551 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.7472% |
24 | Dcoin | LINK-USDT | $23.81 0.0065023 Eth | $1,988,142.00 83,499.000 LINK | 0.7300% |
25 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.79 0.0064988 Eth | $1,858,005.00 78,924.219 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.6900% |
26 | CoinEx | LINK-USDT | $23.79 0.0064984 Eth | $1,722,972.00 73,888.788 LINK | 0.6460% |
27 | KuCoin | LINK-USDT | $23.92 0.0065279 Eth | $1,694,143.00 70,818.813 LINK | 0.6191% |
28 | tanX | LINK-USDC | $23.80 0.0064954 Eth | $1,175,657.00 50,281.240 LINK | 0.4396% |
29 | PointPay | LINK-USDT | $23.83 0.0065073 Eth | $1,141,301.00 48,798.449 LINK | 0.4266% |
30 | Gemini | LINK-USD | $23.90 0.0065221 Eth | $1,050,007.00 43,931.545 LINK | 0.3841% |
31 | EXMO | LINK-USDT | $23.92 0.0065264 Eth | $1,028,165.00 42,989.712 LINK | 0.3758% |
32 | Coinbase Exchange | LINK-EUR | $23.79 0.0064923 Eth | $941,723.00 39,590.630 LINK | 0.3461% |
33 | WhiteBIT | LINK-BTC | $23.82 0.0065036 Eth | $938,923.00 39,420.800 LINK | 0.3446% |
34 | Trubit | LINK-USDT | $23.86 0.0065137 Eth | $935,407.00 40,063.890 LINK | 0.3502% |
35 | WhiteBIT | LINK-TRY | $23.83 0.0065058 Eth | $901,397.00 37,832.870 LINK | 0.3307% |
36 | Bybit | LINK-USDC | $23.90 0.0065226 Eth | $888,826.00 37,887.352 LINK | 0.3312% |
37 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.84 0.0065077 Eth | $791,910.00 33,525.593 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2931% |
38 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $23.68 0.0064607 Eth | $753,499.00 49,256.708 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.4306% |
39 | Bitstamp | LINK-EUR | $23.77 0.0064859 Eth | $654,764.00 27,547.858 LINK | 0.2408% |
40 | Bitbank | LINK-JPY | $23.75 0.0064883 Eth | $602,830.00 25,378.417 LINK | 0.2219% |
41 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $23.68 0.0064607 Eth | $591,866.00 25,090.157 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.2193% |
42 | EarnBIT | LINK-USDT | $23.86 0.0065109 Eth | $551,603.00 23,563.244 LINK | 0.2060% |
43 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $23.81 0.0064994 Eth | $550,832.00 23,278.717 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2035% |
44 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.82 0.0065019 Eth | $508,517.00 21,611.331 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1889% |
45 | Bitstamp | LINK-USD | $23.82 0.0065000 Eth | $478,290.00 20,079.349 LINK | 0.1755% |
46 | Bitbegin | LINK-USDT | $23.81 0.0065040 Eth | $446,510.00 19,114.067 LINK | 0.1671% |
47 | BigONE | LINK-USDT | $23.71 0.0064727 Eth | $441,641.00 18,629.780 LINK | 0.1629% |
48 | Coinbase Exchange | LINK-GBP | $23.78 0.0064893 Eth | $391,481.00 16,465.540 LINK | 0.1439% |
49 | HashKey Exchange | LINK-USD | $23.77 0.0064924 Eth | $366,032.00 15,674.712 LINK | 0.1370% |
50 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $23.84 0.0065065 Eth | $337,007.00 331,163.574 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.8951% |
51 | Coinbase Exchange | LINK-ETH | $23.71 0.0064666 Eth | $324,754.00 13,694.740 LINK | 0.1197% |
52 | WhiteBIT | LINK-EUR | $23.78 0.0064939 Eth | $307,733.00 12,939.530 LINK | 0.1131% |
53 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $23.76 0.0064890 Eth | $299,886.00 12,812.075 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1120% |
54 | Coinbase Exchange | LINK-BTC | $23.81 0.0065012 Eth | $293,661.00 12,335.380 LINK | 0.1078% |
55 | Slex | LINK-ETH | $23.79 0.0064981 Eth | $279,652.00 11,870.290 LINK | 0.1038% |
56 | GMO Japan | LINK-JPY | $23.83 0.0065093 Eth | $266,879.00 11,197.900 LINK | 0.0979% |
57 | BitMart | LINK-BTC | $23.80 0.0065014 Eth | $266,184.00 11,184.040 LINK | 0.0978% |
58 | OKX | LINK-USDC | $23.93 0.0065291 Eth | $261,704.00 11,179.887 LINK | 0.0977% |
59 | Bitci TR | LINK-TRY | $23.61 0.0064491 Eth | $239,891.00 10,249.650 LINK | 0.0896% |
60 | BitDelta | LINK-USDT | $23.77 0.0064850 Eth | $215,580.00 9,232.000 LINK | 0.0807% |
61 | Coinone | LINK-KRW | $23.87 0.0065127 Eth | $186,796.00 7,826.767 LINK | 0.0684% |
62 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $23.64 0.0064553 Eth | $143,927.00 6,110.231 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0534% |
63 | LATOKEN | LINK-BTC | $23.79 0.0064994 Eth | $124,173.00 5,218.856 LINK | 0.0456% |
64 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $23.84 0.0065078 Eth | $109,239.00 4,613.123 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0403% |
65 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $23.81 0.0064997 Eth | $103,445.00 4,382.061 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0383% |
66 | Bitkub | LINK-THB | $23.65 0.0064607 Eth | $102,110.00 4,317.264 LINK | 0.0377% |
67 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $23.86 0.0065123 Eth | $97,697.00 4,173.384 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0365% |
68 | Kanga | LINK-PLN | $23.80 0.0065046 Eth | $90,783.00 0.000 LINK | 0.0000% |
69 | BitMart | LINK-ETH | $23.78 0.0064967 Eth | $87,142.00 3,664.000 LINK | 0.0320% |
70 | Hotcoin | LINK-BTC | $23.82 0.0065055 Eth | $87,105.00 3,656.970 LINK | 0.0320% |
71 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $23.69 0.0064710 Eth | $86,403.00 3,665.437 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0320% |
72 | Bitso | LINK-USD | $23.83 0.0065010 Eth | $79,704.00 3,345.119 LINK | 0.0292% |
73 | Nonkyc.io | LINK-BTC | $23.89 0.0065160 Eth | $76,949.00 3,268.622 LINK | 0.0286% |
74 | Gemini | LINK-BTC | $23.73 0.0064742 Eth | $61,843.00 2,606.624 LINK | 0.0228% |
75 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.79 0.0064991 Eth | $58,269.00 57,257.971 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.5006% |
76 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $23.65 0.0064604 Eth | $56,264.00 2,389.397 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0209% |
77 | Binance US | LINK-USDT | $23.75 0.0064807 Eth | $46,636.00 1,963.519 LINK | 0.0172% |
78 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $23.70 0.0064741 Eth | $37,406.00 47.757 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0004% |
79 | Bitexen | LINK-TRY | $23.57 0.0064391 Eth | $32,654.00 1,385.265 LINK | 0.0121% |
80 | CoinEx | LINK-USDC | $23.71 0.0064680 Eth | $31,169.00 1,372.209 LINK | 0.0120% |
81 | Hotcoin | LINK-ETH | $23.76 0.0064833 Eth | $30,709.00 1,292.690 LINK | 0.0113% |
82 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $23.76 0.0064864 Eth | $27,470.00 1,214.774 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0106% |
83 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $23.84 0.0065073 Eth | $24,115.00 1,030.623 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0090% |
84 | Korbit | LINK-KRW | $23.84 0.0065052 Eth | $21,092.00 902.466 LINK | 0.0079% |
85 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $23.68 0.0064607 Eth | $18,132.18 777.212 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0068% |
86 | PancakeSwap V1 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.79 0.0064935 Eth | $16,154.36 764.527 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0067% |
87 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.71 0.0064738 Eth | $15,000.67 636.872 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0056% |
88 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $23.73 0.0064765 Eth | $14,191.66 601.364 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0053% |
89 | Dex-Trade | LINK-ETH | $23.76 0.0064934 Eth | $13,308.41 560.230 LINK | 0.0049% |
90 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $23.85 0.0065091 Eth | $10,853.01 454.054 0X5947BB275C521040051D82396192181B413227A3 | 0.0040% |
91 | KuCoin | LINK-KCS | $23.83 0.0065025 Eth | $10,799.10 453.192 LINK | 0.0040% |
92 | Biswap V3 | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $23.69 0.0064704 Eth | $9,716.65 412.589 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0036% |
93 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $23.83 0.0065084 Eth | $7,671.67 326.633 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0029% |
94 | Binance US | LINK-BTC | $23.76 0.0064801 Eth | $6,995.21 294.453 LINK | 0.0026% |
95 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $23.75 0.0064776 Eth | $6,375.10 6,283.730 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.0549% |
96 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $23.75 0.0064782 Eth | $6,286.87 6,183.909 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0541% |
97 | PancakeSwap V3 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $23.69 0.0064661 Eth | $3,740.99 158.594 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0014% |
98 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $23.66 0.0064623 Eth | $2,888.43 8.291 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0001% |
99 | CoinEx | LINK-BTC | $23.76 0.0064877 Eth | $2,392.62 101.634 LINK | 0.0009% |
100 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $23.82 0.0065016 Eth | $2,291.59 96.245 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0008% |
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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