ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
726,078 ( -0.027%)
Market
Price
$20.26 @ 0.006328 ETH (+2.14%)
Onchain Market Cap
$20,260,000,000.00
Circulating Supply Market Cap
$12,765,107,064.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
107.08746058 LINKValue
$2,169.59 ( ~0.677613955570901 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $20.25 0.0063152 Eth | $90,270,496.00 4,440,520.760 LINK | 24.8575% |
2 | Coinbase Exchange | LINK-USD | $20.33 0.0063338 Eth | $31,528,445.00 1,550,604.670 LINK | 8.6801% |
3 | P2B | LINK-USDT | $20.34 0.0063387 Eth | $18,043,852.00 887,091.740 LINK | 4.9658% |
4 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.35 0.0063472 Eth | $17,682,837.00 870,444.310 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 4.8726% |
5 | Bybit | LINK-USDT | $20.22 0.0063096 Eth | $15,950,058.00 783,641.759 LINK | 4.3867% |
6 | Bitget | LINK-USDT | $20.23 0.0063139 Eth | $13,642,646.00 671,131.007 LINK | 3.7569% |
7 | Gate.io | LINK-USDT | $20.27 0.0063226 Eth | $11,490,308.00 564,723.683 LINK | 3.1612% |
8 | DigiFinex | LINK-USDT | $20.24 0.0063171 Eth | $10,977,726.00 542,356.510 LINK | 3.0360% |
9 | HTX | LINK-USDT | $20.25 0.0063181 Eth | $9,930,224.00 488,142.902 LINK | 2.7326% |
10 | OKX | LINK-USDT | $20.25 0.0063144 Eth | $9,392,505.00 461,121.246 LINK | 2.5813% |
11 | XT.COM | LINK-USDT | $20.23 0.0063404 Eth | $8,986,941.00 441,832.410 LINK | 2.4733% |
12 | Azbit | LINK-USDT | $20.33 0.0063320 Eth | $8,960,613.00 440,347.466 LINK | 2.4650% |
13 | Coinstore | LINK-USDT | $20.23 0.0063391 Eth | $8,113,830.00 398,998.740 LINK | 2.2335% |
14 | CoinW | LINK-USDT | $20.33 0.0063321 Eth | $7,465,540.00 367,278.530 LINK | 2.0560% |
15 | Bitunix | LINK-USDT | $20.35 0.0063432 Eth | $6,690,796.00 328,889.800 LINK | 1.8411% |
16 | Binance | LINK-FDUSD | $20.25 0.0063467 Eth | $6,254,217.00 307,544.540 LINK | 1.7216% |
17 | Hotcoin | LINK-USDT | $20.34 0.0063381 Eth | $5,543,944.00 272,570.510 LINK | 1.5258% |
18 | BYDFi | LINK-USDT | $20.27 0.0063154 Eth | $5,025,687.00 247,930.820 LINK | 1.3879% |
19 | LBank | LINK-USDT | $20.26 0.0063187 Eth | $4,447,981.00 219,552.480 LINK | 1.2290% |
20 | LATOKEN | LINK-USDT | $20.34 0.0063372 Eth | $4,328,856.00 212,820.447 LINK | 1.1913% |
21 | QMall | LINK-USDT | $20.28 0.0063185 Eth | $3,745,927.00 184,138.009 LINK | 1.0308% |
22 | BTSE | LINK-USDT | $20.25 0.0063178 Eth | $3,380,256.00 166,908.373 LINK | 0.9343% |
23 | KuCoin | LINK-USDT | $20.24 0.0063161 Eth | $3,281,084.00 162,130.524 LINK | 0.9076% |
24 | Kraken | LINK-USD | $20.27 0.0063252 Eth | $3,137,764.00 154,815.776 LINK | 0.8666% |
25 | Dex-Trade | LINK-USDT | $20.23 0.0063107 Eth | $2,800,159.00 138,420.790 LINK | 0.7749% |
26 | FMCPAY | LINK-USDT | $20.23 0.0063139 Eth | $2,553,047.00 125,330.874 LINK | 0.7016% |
27 | Coinbase Exchange | LINK-EUR | $20.31 0.0063327 Eth | $2,085,752.00 102,694.980 LINK | 0.5749% |
28 | Curve (Ethereum) | 0XB8B295DF2CD735B15BE5EB419517AA626FC43CD5-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $20.33 0.0063334 Eth | $2,044,228.00 101,674.040 0XB8B295DF2CD735B15BE5EB419517AA626FC43CD5 | 0.5692% |
29 | Bitvavo | LINK-EUR | $20.33 0.0063354 Eth | $2,034,238.00 100,057.095 LINK | 0.5601% |
30 | Coinbase Exchange | LINK-GBP | $20.30 0.0063239 Eth | $2,012,539.00 99,144.660 LINK | 0.5550% |
31 | CoinEx | LINK-USDT | $20.32 0.0063443 Eth | $1,731,094.00 85,029.353 LINK | 0.4760% |
32 | Biconomy.com | LINK-USDT | $20.19 0.0063333 Eth | $1,715,820.00 84,304.630 LINK | 0.4719% |
33 | PointPay | LINK-USDT | $20.32 0.0063331 Eth | $1,408,979.00 69,247.393 LINK | 0.3876% |
34 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $20.24 0.0063129 Eth | $1,283,906.00 63,314.350 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.3544% |
35 | FMCPAY | LINK-ETH | $20.26 0.0063223 Eth | $1,260,610.00 62,206.720 LINK | 0.3482% |
36 | FMCPAY | LINK-BTC | $20.25 0.0063196 Eth | $1,233,401.00 60,484.000 LINK | 0.3386% |
37 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.31 0.0063398 Eth | $1,189,537.00 58,855.627 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.3295% |
38 | EXMO | LINK-USDT | $20.29 0.0063294 Eth | $938,699.00 46,265.748 LINK | 0.2590% |
39 | Phemex | LINK-USDT | $20.25 0.0063207 Eth | $928,393.00 45,841.410 LINK | 0.2566% |
40 | Trubit | LINK-USDT | $20.27 0.0063248 Eth | $815,087.00 40,154.880 LINK | 0.2248% |
41 | BigONE | LINK-USDT | $20.30 0.0063220 Eth | $731,013.00 36,018.990 LINK | 0.2016% |
42 | BitStorage | LINK-USDT | $20.26 0.0063171 Eth | $720,540.00 35,564.530 LINK | 0.1991% |
43 | Gemini | LINK-USD | $20.24 0.0063158 Eth | $560,905.00 27,717.550 LINK | 0.1552% |
44 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.26 0.0063226 Eth | $560,171.00 27,570.130 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1543% |
45 | Binance | LINK-EUR | $20.31 0.0063487 Eth | $486,448.00 23,849.180 LINK | 0.1335% |
46 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.27 0.0063154 Eth | $457,310.00 22,516.526 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1260% |
47 | Coinbase Exchange | LINK-USDT | $20.34 0.0063372 Eth | $455,738.00 22,405.486 LINK | 0.1254% |
48 | EarnBIT | LINK-USDT | $20.35 0.0063539 Eth | $444,622.00 21,769.196 LINK | 0.1219% |
49 | Bitbegin | LINK-USDT | $20.24 0.0063436 Eth | $430,176.00 21,167.561 LINK | 0.1185% |
50 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $20.34 0.0063440 Eth | $429,950.00 21,126.331 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1183% |
51 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.29 0.0063202 Eth | $420,861.00 421,138.866 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.3575% |
52 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.34 0.0063489 Eth | $418,141.00 418,376.340 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.3420% |
53 | Bitbank | LINK-JPY | $20.31 0.0063277 Eth | $415,833.00 20,470.930 LINK | 0.1146% |
54 | QMall | LINK-USDC | $20.32 0.0063315 Eth | $335,529.00 16,519.861 LINK | 0.0925% |
55 | GMO Japan | LINK-JPY | $20.15 0.0062776 Eth | $323,269.00 16,041.200 LINK | 0.0898% |
56 | Binance | LINK-TRY | $20.22 0.0063426 Eth | $303,880.00 14,916.770 LINK | 0.0835% |
57 | Coinbase Exchange | LINK-ETH | $20.28 0.0063245 Eth | $280,854.00 13,846.140 LINK | 0.0775% |
58 | BitMart | LINK-BTC | $20.33 0.0063402 Eth | $253,397.00 12,465.280 LINK | 0.0698% |
59 | Bitkub | LINK-THB | $20.24 0.0063081 Eth | $245,177.00 12,112.200 LINK | 0.0678% |
60 | Coinbase Exchange | LINK-BTC | $20.34 0.0063374 Eth | $235,064.00 11,554.170 LINK | 0.0647% |
61 | BitDelta | LINK-USDT | $20.34 0.0063350 Eth | $228,589.00 11,250.000 LINK | 0.0630% |
62 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $20.35 0.0063472 Eth | $205,985.00 15,563.356 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.0871% |
63 | Hotcoin | LINK-BTC | $20.31 0.0063315 Eth | $201,079.00 9,902.340 LINK | 0.0554% |
64 | Bitci TR | LINK-TRY | $20.27 0.0063220 Eth | $200,377.00 9,839.678 LINK | 0.0551% |
65 | Slex | LINK-ETH | $20.31 0.0063290 Eth | $175,428.00 8,642.190 LINK | 0.0484% |
66 | OKX | LINK-USDC | $20.25 0.0063173 Eth | $161,031.00 7,920.835 LINK | 0.0443% |
67 | BitStorage | LINK-ETH | $20.24 0.0063341 Eth | $134,139.00 6,628.640 LINK | 0.0371% |
68 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $20.32 0.0063370 Eth | $132,429.00 6,504.462 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0364% |
69 | DeGate | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $20.40 0.0063572 Eth | $131,852.00 6,465.368 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0362% |
70 | Kraken | LINK-ETH | $20.30 0.0063350 Eth | $125,732.00 6,193.946 LINK | 0.0347% |
71 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $20.34 0.0063489 Eth | $122,533.00 6,026.388 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0337% |
72 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $20.18 0.0062931 Eth | $119,428.00 5,903.654 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0330% |
73 | Binance US | LINK-USDT | $20.28 0.0063346 Eth | $118,870.00 5,861.831 LINK | 0.0328% |
74 | LATOKEN | LINK-BTC | $20.35 0.0063382 Eth | $111,859.00 5,497.782 LINK | 0.0308% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.29 0.0063321 Eth | $109,848.00 5,412.630 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0303% |
76 | Kraken | LINK-GBP | $20.25 0.0063164 Eth | $99,626.00 4,920.348 LINK | 0.0275% |
77 | BitMart | LINK-ETH | $20.33 0.0063396 Eth | $87,531.00 4,306.300 LINK | 0.0241% |
78 | Hotcoin | LINK-ETH | $20.28 0.0063262 Eth | $67,259.00 3,316.700 LINK | 0.0186% |
79 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $20.21 0.0063061 Eth | $55,393.00 2,747.442 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0154% |
80 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $20.19 0.0062894 Eth | $51,528.00 2,558.401 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0143% |
81 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.27 0.0063265 Eth | $50,466.00 2,494.759 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0140% |
82 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.31 0.0063265 Eth | $50,184.00 2,471.348 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0138% |
83 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $20.33 0.0063413 Eth | $44,696.00 2,192.066 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0123% |
84 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $20.24 0.0063129 Eth | $43,289.00 43,483.953 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.2434% |
85 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $20.20 0.0062935 Eth | $37,083.00 49.268 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0003% |
86 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $20.46 0.0063719 Eth | $30,415.00 2,286.014 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.0128% |
87 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $20.33 0.0063336 Eth | $29,678.00 1,459.878 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0082% |
88 | Korbit | LINK-KRW | $20.56 0.0064165 Eth | $29,447.00 1,420.016 LINK | 0.0079% |
89 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $20.68 0.0064553 Eth | $23,346.00 1,139.463 0X5947BB275C521040051D82396192181B413227A3 | 0.0064% |
90 | Dex-Trade | LINK-ETH | $20.22 0.0063324 Eth | $17,218.32 851.640 LINK | 0.0048% |
91 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $20.25 0.0063093 Eth | $15,993.10 792.390 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0044% |
92 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $20.19 0.0062899 Eth | $15,905.31 794.121 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0044% |
93 | HTX | LINK-BTC | $20.24 0.0063138 Eth | $12,641.93 601.881 LINK | 0.0034% |
94 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $20.31 0.0063399 Eth | $10,647.52 517.964 0X5947BB275C521040051D82396192181B413227A3 | 0.0029% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X7130D2A12B9BCBFAE4F2634D864A1EE1CE3EAD9C | $20.21 0.0062950 Eth | $9,339.29 586.226 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0033% |
96 | Biswap V3 | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $20.24 0.0063043 Eth | $9,332.85 463.210 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0026% |
97 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $20.25 0.0063077 Eth | $8,446.56 413.817 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0023% |
98 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $20.50 0.0063980 Eth | $6,612.43 329.064 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0018% |
99 | Bitexen | LINK-TRY | $19.98 0.0062665 Eth | $4,741.59 237.342 LINK | 0.0013% |
100 | Ace | LINK-USDT | $20.34 0.0063420 Eth | $3,728.45 183.320 LINK | 0.0010% |
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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