ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
725,625 ( -0.016%)
Market
Price
$20.12 @ 0.006120 ETH (+0.90%)
Onchain Market Cap
$20,120,000,000.00
Circulating Supply Market Cap
$12,700,467,516.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
28.445736984962002976 LINKValue
$572.33 ( ~0.174094873552143 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $20.10 0.0061144 Eth | $56,697,232.00 2,816,753.750 LINK | 19.9854% |
2 | Coinbase Exchange | LINK-USD | $20.12 0.0061186 Eth | $20,380,594.00 1,013,153.400 LINK | 7.1885% |
3 | P2B | LINK-USDT | $20.14 0.0061261 Eth | $11,846,258.00 588,180.180 LINK | 4.1732% |
4 | WEEX | LINK-USDT | $20.19 0.0061398 Eth | $11,843,510.00 588,501.910 LINK | 4.1755% |
5 | Slex | LINK-USDT | $20.16 0.0061298 Eth | $9,408,674.00 467,182.420 LINK | 3.3147% |
6 | Bitget | LINK-USDT | $20.13 0.0061231 Eth | $8,634,876.00 428,792.665 LINK | 3.0424% |
7 | BVOX | LINK-USDT | $20.10 0.0061162 Eth | $8,264,633.00 410,848.450 LINK | 2.9150% |
8 | MEXC | LINK-USDT | $20.16 0.0061302 Eth | $8,176,287.00 405,575.360 LINK | 2.8776% |
9 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.07 0.0061051 Eth | $7,969,761.00 393,869.340 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.7946% |
10 | Ourbit | LINK-USDT | $20.13 0.0061224 Eth | $7,688,707.00 381,687.990 LINK | 2.7081% |
11 | Bybit | LINK-USDT | $20.12 0.0061200 Eth | $7,095,895.00 352,070.692 LINK | 2.4980% |
12 | DigiFinex | LINK-USDT | $20.12 0.0061206 Eth | $6,807,358.00 338,300.560 LINK | 2.4003% |
13 | Deepcoin | LINK-USDT | $20.12 0.0061199 Eth | $5,770,678.00 289,602.511 LINK | 2.0548% |
14 | XT.COM | LINK-USDT | $20.13 0.0061209 Eth | $5,671,791.00 281,594.010 LINK | 1.9980% |
15 | Azbit | LINK-USDT | $20.11 0.0061168 Eth | $5,664,247.00 281,192.372 LINK | 1.9951% |
16 | FameEX | LINK-USDT | $20.13 0.0061214 Eth | $5,658,214.00 280,912.176 LINK | 1.9931% |
17 | OKX | LINK-USDT | $20.13 0.0061218 Eth | $5,398,880.00 267,988.252 LINK | 1.9014% |
18 | Gate.io | LINK-USDT | $20.14 0.0061252 Eth | $5,223,880.00 258,745.060 LINK | 1.8358% |
19 | Coinstore | LINK-USDT | $20.14 0.0061233 Eth | $5,156,585.00 256,085.480 LINK | 1.8170% |
20 | Niza Global | LINK-USD | $20.13 0.0061207 Eth | $4,703,500.00 233,542.718 LINK | 1.6570% |
21 | Kraken | LINK-USD | $20.12 0.0061186 Eth | $4,698,535.00 233,573.072 LINK | 1.6572% |
22 | CoinW | LINK-USDT | $20.14 0.0061234 Eth | $4,530,304.00 224,969.570 LINK | 1.5962% |
23 | HTX | LINK-USDT | $20.12 0.0061193 Eth | $4,513,978.00 224,680.150 LINK | 1.5941% |
24 | Binance | LINK-FDUSD | $20.12 0.0061212 Eth | $4,299,189.00 213,381.480 LINK | 1.5140% |
25 | Bitunix | LINK-USDT | $20.12 0.0061221 Eth | $4,092,245.00 203,403.770 LINK | 1.4432% |
26 | Toobit | LINK-USDT | $20.12 0.0061200 Eth | $3,639,819.00 180,702.130 LINK | 1.2821% |
27 | BYDFi | LINK-USDT | $20.15 0.0061294 Eth | $3,169,111.00 157,272.230 LINK | 1.1159% |
28 | LBank | LINK-USDT | $20.13 0.0061254 Eth | $2,775,534.00 137,877.620 LINK | 0.9783% |
29 | KuCoin | LINK-USDT | $20.12 0.0061199 Eth | $2,753,989.00 136,881.662 LINK | 0.9712% |
30 | LATOKEN | LINK-USDT | $20.15 0.0061267 Eth | $2,731,793.00 135,583.123 LINK | 0.9620% |
31 | QMall | LINK-USDT | $20.13 0.0061233 Eth | $2,356,455.00 117,001.806 LINK | 0.8301% |
32 | FMCPAY | LINK-USDT | $20.13 0.0061211 Eth | $1,941,731.00 96,477.081 LINK | 0.6845% |
33 | Dex-Trade | LINK-USDT | $20.09 0.0061213 Eth | $1,821,526.00 90,664.470 LINK | 0.6433% |
34 | BTSE | LINK-USDT | $20.13 0.0061233 Eth | $1,622,215.00 80,585.642 LINK | 0.5718% |
35 | Biconomy.com | LINK-USDT | $20.12 0.0061217 Eth | $1,415,181.00 70,352.510 LINK | 0.4992% |
36 | Coinbase Exchange | LINK-ETH | $20.09 0.0061112 Eth | $1,393,002.00 69,344.910 LINK | 0.4920% |
37 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.12 0.0061202 Eth | $1,212,626.00 60,054.335 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.4261% |
38 | Coinbase Exchange | LINK-EUR | $20.13 0.0061238 Eth | $1,088,483.00 54,073.840 LINK | 0.3837% |
39 | FMCPAY | LINK-ETH | $20.13 0.0061226 Eth | $1,075,342.00 53,249.120 LINK | 0.3778% |
40 | FMCPAY | LINK-BTC | $20.15 0.0061270 Eth | $1,019,373.00 50,308.400 LINK | 0.3569% |
41 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $20.09 0.0061113 Eth | $983,842.00 48,617.227 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.3449% |
42 | tanX | LINK-USDC | $20.13 0.0061243 Eth | $972,919.00 48,355.980 LINK | 0.3431% |
43 | Bitvavo | LINK-EUR | $20.15 0.0061269 Eth | $945,844.00 46,942.363 LINK | 0.3331% |
44 | PointPay | LINK-USDT | $20.12 0.0061203 Eth | $919,959.00 45,670.807 LINK | 0.3240% |
45 | CoinEx | LINK-USDT | $20.12 0.0061187 Eth | $861,024.00 42,865.483 LINK | 0.3041% |
46 | Azbit | LINK-ETH | $20.14 0.0061248 Eth | $675,376.00 33,456.374 LINK | 0.2374% |
47 | Coinbase Exchange | LINK-GBP | $20.14 0.0061277 Eth | $645,940.00 32,068.730 LINK | 0.2275% |
48 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $20.21 0.0061453 Eth | $622,662.00 30,793.303 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2185% |
49 | EXMO | LINK-USDT | $20.12 0.0061196 Eth | $486,073.00 24,160.534 LINK | 0.1714% |
50 | Bitbegin | LINK-USDT | $19.99 0.0061180 Eth | $444,299.00 22,112.645 LINK | 0.1569% |
51 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.15 0.0061303 Eth | $380,109.00 18,855.746 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1338% |
52 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $20.09 0.0061113 Eth | $374,343.00 27,334.266 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.1939% |
53 | Bitbank | LINK-JPY | $20.19 0.0061416 Eth | $342,216.00 16,949.115 LINK | 0.1203% |
54 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.14 0.0061259 Eth | $334,194.00 334,494.445 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 2.3733% |
55 | BigONE | LINK-USDT | $20.13 0.0061213 Eth | $301,969.00 15,000.160 LINK | 0.1064% |
56 | BitMart | LINK-BTC | $20.13 0.0061234 Eth | $271,183.00 13,470.580 LINK | 0.0956% |
57 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.15 0.0061295 Eth | $248,899.00 12,244.218 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0869% |
58 | QMall | LINK-USDC | $20.12 0.0061203 Eth | $237,008.00 11,738.416 LINK | 0.0833% |
59 | Gemini | LINK-USD | $20.13 0.0061234 Eth | $228,099.00 11,330.339 LINK | 0.0804% |
60 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $20.16 0.0061333 Eth | $225,256.00 11,173.574 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0793% |
61 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $20.15 0.0061303 Eth | $185,080.00 185,345.323 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.3151% |
62 | Slex | LINK-ETH | $20.13 0.0061216 Eth | $184,004.00 9,105.200 LINK | 0.0646% |
63 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $20.18 0.0061382 Eth | $178,937.00 8,874.633 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0630% |
64 | BitStorage | LINK-ETH | $20.13 0.0061216 Eth | $170,803.00 8,485.930 LINK | 0.0602% |
65 | GMO Japan | LINK-JPY | $20.07 0.0061052 Eth | $164,596.00 8,200.400 LINK | 0.0582% |
66 | Coinbase Exchange | LINK-BTC | $20.12 0.0061211 Eth | $163,795.00 8,139.260 LINK | 0.0577% |
67 | OKX | LINK-USDC | $20.12 0.0061213 Eth | $163,454.00 8,138.391 LINK | 0.0577% |
68 | bitcastle | LINK-USDT | $20.15 0.0061271 Eth | $138,143.00 6,864.980 LINK | 0.0487% |
69 | LATOKEN | LINK-BTC | $20.13 0.0061210 Eth | $111,078.00 5,517.982 LINK | 0.0392% |
70 | PointPay | LINK-BTC | $20.13 0.0061171 Eth | $91,115.00 4,475.528 LINK | 0.0318% |
71 | BitMart | LINK-ETH | $20.13 0.0061215 Eth | $88,118.00 4,378.480 LINK | 0.0311% |
72 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $20.08 0.0061065 Eth | $77,219.00 3,829.854 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0272% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.11 0.0061185 Eth | $71,396.00 3,531.785 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0251% |
74 | Hotcoin | LINK-BTC | $20.15 0.0061268 Eth | $62,373.00 3,095.680 LINK | 0.0220% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $20.15 0.0061295 Eth | $61,050.00 3,026.133 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0215% |
76 | Bitkub | LINK-THB | $20.15 0.0061307 Eth | $60,770.00 3,015.908 LINK | 0.0214% |
77 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $20.12 0.0061236 Eth | $44,708.00 2,124.995 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0151% |
78 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $20.12 0.0061201 Eth | $41,610.00 2,056.833 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0146% |
79 | Bitexen | LINK-TRY | $20.00 0.0060840 Eth | $33,737.00 1,686.919 LINK | 0.0120% |
80 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $20.21 0.0061453 Eth | $29,966.00 29,883.656 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.2120% |
81 | Gemini | LINK-BTC | $19.97 0.0060756 Eth | $27,688.00 1,386.163 LINK | 0.0098% |
82 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $20.18 0.0061380 Eth | $26,408.00 1,298.295 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0092% |
83 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $20.05 0.0060969 Eth | $23,079.00 1,145.113 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0081% |
84 | Dex-Trade | LINK-ETH | $20.05 0.0061123 Eth | $22,063.00 1,100.160 LINK | 0.0078% |
85 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $20.05 0.0060985 Eth | $13,093.25 648.754 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0046% |
86 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $20.05 0.0060981 Eth | $10,218.34 502.785 0X5947BB275C521040051D82396192181B413227A3 | 0.0036% |
87 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $20.11 0.0061190 Eth | $7,885.46 390.826 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0028% |
88 | KuCoin | LINK-KCS | $20.10 0.0061127 Eth | $7,654.40 380.894 LINK | 0.0027% |
89 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $20.07 0.0061020 Eth | $7,302.17 357.155 0X5947BB275C521040051D82396192181B413227A3 | 0.0025% |
90 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $20.06 0.0061030 Eth | $5,008.70 248.821 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0018% |
91 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $20.10 0.0061119 Eth | $3,681.94 3,683.377 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0261% |
92 | CoinEx | LINK-USDC | $20.13 0.0061232 Eth | $3,077.06 153.478 LINK | 0.0011% |
93 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $20.19 0.0061447 Eth | $2,554.62 8.753 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0001% |
94 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $20.04 0.0060955 Eth | $1,880.61 93.425 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0007% |
95 | CoinEx | LINK-BTC | $20.04 0.0060947 Eth | $1,811.97 89.572 LINK | 0.0006% |
96 | Retro | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $20.06 0.0061045 Eth | $1,191.08 58.888 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0004% |
97 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $20.15 0.0061266 Eth | $818.43 40.265 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0003% |
98 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $20.17 0.0061367 Eth | $536.77 26.541 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0002% |
99 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $20.11 0.0061143 Eth | $362.50 17.962 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0001% |
100 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $20.14 0.0061267 Eth | $196.94 9.782 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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