ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
725,739 ( -0.001%)
Market
Price
$19.69 @ 0.006075 ETH (-3.17%)
Onchain Market Cap
$19,690,000,000.00
Circulating Supply Market Cap
$12,415,968,706.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
2.347031614440824637 LINKValue
$46.21 ( ~0.0142580356023732 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Websea | LINK-USDT | $19.65 0.0060686 Eth | $51,384,817.00 0.000 LINK | 0.0000% |
2 | Binance | LINK-USDT | $19.64 0.0060578 Eth | $48,698,425.00 2,429,939.560 LINK | 20.3032% |
3 | Coinbase Exchange | LINK-USD | $19.65 0.0060695 Eth | $15,704,045.00 799,310.070 LINK | 6.6786% |
4 | WEEX | LINK-USDT | $19.61 0.0060543 Eth | $10,507,412.00 524,109.450 LINK | 4.3792% |
5 | P2B | LINK-USDT | $19.65 0.0060656 Eth | $9,900,523.00 503,853.870 LINK | 4.2099% |
6 | Slex | LINK-USDT | $19.64 0.0060661 Eth | $8,057,743.00 402,065.830 LINK | 3.3594% |
7 | Bitget | LINK-USDT | $19.70 0.0060848 Eth | $7,973,019.00 398,344.793 LINK | 3.3283% |
8 | BVOX | LINK-USDT | $19.68 0.0060695 Eth | $7,639,405.00 380,948.580 LINK | 3.1830% |
9 | Ourbit | LINK-USDT | $19.65 0.0060704 Eth | $7,062,832.00 352,557.510 LINK | 2.9458% |
10 | Bybit | LINK-USDT | $19.66 0.0060733 Eth | $6,683,384.00 333,695.293 LINK | 2.7882% |
11 | MEXC | LINK-USDT | $19.67 0.0060603 Eth | $5,861,736.00 297,996.400 LINK | 2.4899% |
12 | DigiFinex | LINK-USDT | $19.66 0.0060725 Eth | $5,762,812.00 293,151.470 LINK | 2.4494% |
13 | Deepcoin | LINK-USDT | $19.66 0.0060699 Eth | $4,988,350.00 249,874.971 LINK | 2.0878% |
14 | HTX | LINK-USDT | $19.66 0.0060748 Eth | $4,868,525.00 243,003.413 LINK | 2.0304% |
15 | Azbit | LINK-USDT | $19.64 0.0060637 Eth | $4,865,040.00 242,717.336 LINK | 2.0280% |
16 | FameEX | LINK-USDT | $19.63 0.0060570 Eth | $4,857,283.00 242,527.009 LINK | 2.0264% |
17 | XT.COM | LINK-USDT | $19.66 0.0060751 Eth | $4,840,041.00 241,527.470 LINK | 2.0181% |
18 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.73 0.0060946 Eth | $4,763,263.00 240,075.084 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.0059% |
19 | OKX | LINK-USDT | $19.66 0.0060719 Eth | $4,721,089.00 235,494.882 LINK | 1.9677% |
20 | Coinstore | LINK-USDT | $19.62 0.0060602 Eth | $4,455,582.00 222,448.160 LINK | 1.8587% |
21 | Kraken | LINK-USD | $19.67 0.0060770 Eth | $4,305,975.00 218,879.066 LINK | 1.8288% |
22 | Binance | LINK-FDUSD | $19.65 0.0060678 Eth | $4,252,718.00 212,304.270 LINK | 1.7739% |
23 | CoinW | LINK-USDT | $19.69 0.0060693 Eth | $3,864,769.00 196,243.430 LINK | 1.6397% |
24 | Gate.io | LINK-USDT | $19.66 0.0060717 Eth | $3,768,917.00 188,447.640 LINK | 1.5746% |
25 | Bitunix | LINK-USDT | $19.64 0.0060696 Eth | $3,413,152.00 173,792.990 LINK | 1.4521% |
26 | Toobit | LINK-USDT | $19.65 0.0060692 Eth | $3,111,866.00 155,291.610 LINK | 1.2975% |
27 | BYDFi | LINK-USDT | $19.69 0.0060677 Eth | $2,677,656.00 136,000.650 LINK | 1.1363% |
28 | LATOKEN | LINK-USDT | $19.68 0.0060592 Eth | $2,351,944.00 119,522.874 LINK | 0.9987% |
29 | LBank | LINK-USDT | $19.64 0.0060685 Eth | $2,300,904.00 117,159.290 LINK | 0.9789% |
30 | Binance | LINK-USDC | $19.64 0.0060678 Eth | $2,196,716.00 109,587.720 LINK | 0.9157% |
31 | KuCoin | LINK-USDT | $19.67 0.0060762 Eth | $2,159,387.00 109,806.643 LINK | 0.9175% |
32 | QMall | LINK-USDT | $19.65 0.0060680 Eth | $2,026,942.00 101,163.797 LINK | 0.8453% |
33 | FMCPAY | LINK-USDT | $19.65 0.0060663 Eth | $1,819,597.00 90,960.381 LINK | 0.7600% |
34 | BTSE | LINK-USDT | $19.65 0.0060662 Eth | $1,679,995.00 85,505.932 LINK | 0.7144% |
35 | Dex-Trade | LINK-USDT | $19.68 0.0060813 Eth | $1,514,625.00 76,968.560 LINK | 0.6431% |
36 | Biconomy.com | LINK-USDT | $19.65 0.0060718 Eth | $1,349,253.00 67,302.080 LINK | 0.5623% |
37 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.68 0.0060807 Eth | $1,112,325.00 55,928.885 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.4673% |
38 | CoinEx | LINK-USDT | $19.65 0.0060707 Eth | $959,711.00 48,020.859 LINK | 0.4012% |
39 | Coinbase Exchange | LINK-ETH | $19.65 0.0060716 Eth | $893,395.00 45,467.180 LINK | 0.3799% |
40 | tanX | LINK-USDC | $19.66 0.0060744 Eth | $848,247.00 42,311.700 LINK | 0.3535% |
41 | Bitvavo | LINK-EUR | $19.67 0.0060664 Eth | $801,807.00 40,755.877 LINK | 0.3405% |
42 | Coinbase Exchange | LINK-EUR | $19.65 0.0060714 Eth | $801,675.00 40,800.970 LINK | 0.3409% |
43 | PointPay | LINK-USDT | $19.66 0.0060730 Eth | $780,619.00 38,964.231 LINK | 0.3256% |
44 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.70 0.0060864 Eth | $763,138.00 38,112.593 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.3184% |
45 | Azbit | LINK-ETH | $19.64 0.0060660 Eth | $753,936.00 38,010.392 LINK | 0.3176% |
46 | Pionex | LINK-USDT | $19.65 0.0060681 Eth | $605,675.00 30,221.690 LINK | 0.2525% |
47 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.60 0.0060501 Eth | $483,863.00 24,403.877 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2039% |
48 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.65 0.0060724 Eth | $471,720.00 23,751.754 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1985% |
49 | EXMO | LINK-USDT | $19.64 0.0060690 Eth | $400,488.00 20,390.630 LINK | 0.1704% |
50 | Coinbase Exchange | LINK-GBP | $19.66 0.0060741 Eth | $345,944.00 17,599.010 LINK | 0.1470% |
51 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.67 0.0060724 Eth | $342,666.00 17,444.757 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1458% |
52 | Bitbank | LINK-JPY | $19.71 0.0060862 Eth | $327,924.00 16,641.159 LINK | 0.1390% |
53 | BigONE | LINK-USDT | $19.70 0.0060810 Eth | $301,333.00 15,296.430 LINK | 0.1278% |
54 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.64 0.0060702 Eth | $281,641.00 286,976.455 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.3978% |
55 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.72 0.0060906 Eth | $272,877.00 20,248.602 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.1692% |
56 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.71 0.0060879 Eth | $266,746.00 13,322.820 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1113% |
57 | BitMart | LINK-BTC | $19.64 0.0060698 Eth | $260,567.00 13,263.960 LINK | 0.1108% |
58 | Gemini | LINK-USD | $19.72 0.0060927 Eth | $251,442.00 12,748.360 LINK | 0.1065% |
59 | Coinbase Exchange | LINK-BTC | $19.64 0.0060690 Eth | $214,765.00 10,933.980 LINK | 0.0914% |
60 | Bitci TR | LINK-TRY | $19.58 0.0060488 Eth | $201,268.00 10,015.180 LINK | 0.0837% |
61 | QMall | LINK-USDC | $19.66 0.0060708 Eth | $196,792.00 9,823.478 LINK | 0.0821% |
62 | GMO Japan | LINK-JPY | $19.80 0.0061168 Eth | $170,217.00 8,594.800 LINK | 0.0718% |
63 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.62 0.0060586 Eth | $141,365.00 7,126.825 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0595% |
64 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.60 0.0060513 Eth | $137,642.00 140,717.217 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.1758% |
65 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.70 0.0060814 Eth | $135,184.00 6,771.023 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0566% |
66 | OKX | LINK-USDC | $19.66 0.0060718 Eth | $126,349.00 6,302.322 LINK | 0.0527% |
67 | BitStorage | LINK-ETH | $19.68 0.0060713 Eth | $125,162.00 6,360.650 LINK | 0.0531% |
68 | bitcastle | LINK-USDT | $19.64 0.0060632 Eth | $124,407.00 6,207.660 LINK | 0.0519% |
69 | Kanga | LINK-PLN | $19.80 0.0061124 Eth | $103,605.00 0.000 LINK | 0.0000% |
70 | BitMart | LINK-ETH | $19.63 0.0060654 Eth | $84,212.00 4,289.880 LINK | 0.0358% |
71 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $19.60 0.0060556 Eth | $76,874.00 3,892.693 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0325% |
72 | Hotcoin | LINK-BTC | $19.64 0.0060635 Eth | $62,292.00 3,171.190 LINK | 0.0265% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.66 0.0060693 Eth | $57,366.00 2,887.664 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0241% |
74 | Bitso | LINK-USD | $19.65 0.0060708 Eth | $55,988.00 2,849.549 LINK | 0.0238% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $19.60 0.0060513 Eth | $48,084.00 2,400.661 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0201% |
76 | EXMO | LINK-BTC | $19.65 0.0060729 Eth | $45,716.00 2,326.117 LINK | 0.0194% |
77 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $19.67 0.0060749 Eth | $36,209.00 1,737.467 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0145% |
78 | Bitexen | LINK-TRY | $19.47 0.0060081 Eth | $33,705.00 1,730.926 LINK | 0.0145% |
79 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.73 0.0060886 Eth | $31,468.00 1,585.842 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0133% |
80 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.60 0.0060501 Eth | $27,357.00 27,969.981 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.2337% |
81 | Gemini | LINK-BTC | $19.67 0.0060749 Eth | $25,103.00 1,276.463 LINK | 0.0107% |
82 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $19.46 0.0060126 Eth | $24,276.00 1,235.582 0X5947BB275C521040051D82396192181B413227A3 | 0.0103% |
83 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.78 0.0061052 Eth | $16,920.73 860.744 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0072% |
84 | Dex-Trade | LINK-ETH | $19.66 0.0060612 Eth | $16,266.47 827.520 LINK | 0.0069% |
85 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $19.62 0.0060575 Eth | $10,384.00 518.564 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0043% |
86 | KuCoin | LINK-KCS | $19.62 0.0060635 Eth | $8,192.68 417.473 LINK | 0.0035% |
87 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $19.72 0.0060906 Eth | $6,900.59 344.759 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0029% |
88 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.58 0.0060487 Eth | $6,542.54 330.805 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0028% |
89 | CoinEx | LINK-USDC | $19.68 0.0060747 Eth | $5,281.84 264.570 LINK | 0.0022% |
90 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $19.68 0.0060752 Eth | $3,951.07 197.837 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0017% |
91 | Ace | LINK-USDT | $19.63 0.0060619 Eth | $1,927.21 96.140 LINK | 0.0008% |
92 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $19.76 0.0060959 Eth | $1,735.48 87.941 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0007% |
93 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.75 0.0060921 Eth | $1,599.71 5.577 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0000% |
94 | Retro | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.66 0.0060670 Eth | $807.13 40.634 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0003% |
95 | Uniswap V3 (Optimism) | 0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | $19.53 0.0060336 Eth | $673.16 687.225 0X0B2C639C533813F4AA9D7837CAF62653D097FF85 | 0.0057% |
96 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $19.60 0.0060432 Eth | $645.40 32.580 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0003% |
97 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $19.59 0.0060448 Eth | $506.92 25.403 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0002% |
98 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $19.66 0.0060684 Eth | $404.85 20.323 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0002% |
99 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $19.57 0.0060399 Eth | $365.38 18.192 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0002% |
100 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $19.62 0.0060538 Eth | $185.92 9.287 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 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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