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ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
722,390 ( 0.002%)
Market
Price
$10.81 @ 0.004372 ETH (-1.58%)
Onchain Market Cap
$10,810,000,000.00
Circulating Supply Market Cap
$6,768,307,413.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | WhiteBIT | LINK-USDT | $10.81 0.0043682 Eth | $27,422,325.00 2,536,396.170 LINK | 15.8971% |
2 | HTX | LINK-USDT | $10.81 0.0043657 Eth | $11,048,419.00 1,023,166.087 LINK | 6.4128% |
3 | Bitget | LINK-USDT | $10.82 0.0043732 Eth | $9,665,132.00 894,943.775 LINK | 5.6091% |
4 | Bybit | LINK-USDT | $10.81 0.0043692 Eth | $7,667,038.00 711,474.344 LINK | 4.4592% |
5 | Coinbase Exchange | LINK-USD | $10.81 0.0043668 Eth | $7,256,896.00 671,313.220 LINK | 4.2075% |
6 | OKX | LINK-USDT | $10.81 0.0043679 Eth | $6,710,227.00 622,953.470 LINK | 3.9044% |
7 | BTSE | LINK-USDT | $10.81 0.0043705 Eth | $6,309,399.00 583,489.682 LINK | 3.6571% |
8 | P2B | LINK-USDT | $10.81 0.0043698 Eth | $5,994,838.00 554,368.820 LINK | 3.4746% |
9 | Slex | LINK-USDT | $10.80 0.0043661 Eth | $5,901,294.00 545,269.630 LINK | 3.4175% |
10 | WEEX | LINK-USDT | $10.80 0.0043655 Eth | $5,869,620.00 544,701.950 LINK | 3.4140% |
11 | Ourbit | LINK-USDT | $10.81 0.0043674 Eth | $5,275,859.00 489,374.840 LINK | 3.0672% |
12 | Azbit | LINK-USDT | $10.82 0.0043690 Eth | $5,194,363.00 480,468.500 LINK | 3.0114% |
13 | Gate.io | LINK-USDT | $10.81 0.0043676 Eth | $5,039,262.00 470,846.890 LINK | 2.9511% |
14 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $10.80 0.0043630 Eth | $4,720,334.00 433,667.849 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.7181% |
15 | BVOX | LINK-USDT | $10.80 0.0043677 Eth | $4,649,118.00 429,451.690 LINK | 2.6916% |
16 | DigiFinex | LINK-USDT | $10.81 0.0043662 Eth | $4,049,777.00 374,696.390 LINK | 2.3484% |
17 | Biconomy.com | LINK-USDT | $10.80 0.0043662 Eth | $3,815,495.00 353,185.190 LINK | 2.2136% |
18 | Binance | LINK-ETH | $10.78 0.0043621 Eth | $3,590,341.00 324,672.690 LINK | 2.0349% |
19 | Bitunix | LINK-USDT | $10.81 0.0043677 Eth | $3,301,949.00 305,571.510 LINK | 1.9152% |
20 | CoinW | LINK-USDT | $10.80 0.0043656 Eth | $2,961,100.00 274,071.530 LINK | 1.7178% |
21 | XT.COM | LINK-USDT | $10.80 0.0043656 Eth | $2,876,777.00 266,551.810 LINK | 1.6706% |
22 | Hotcoin | LINK-USDT | $10.78 0.0043617 Eth | $2,492,092.00 231,110.890 LINK | 1.4485% |
23 | Trubit | LINK-USDT | $10.79 0.0043595 Eth | $2,341,136.00 217,017.930 LINK | 1.3602% |
24 | KuCoin | LINK-USDT | $10.82 0.0043690 Eth | $2,293,469.00 212,056.577 LINK | 1.3291% |
25 | LBank | LINK-USDT | $10.79 0.0043607 Eth | $2,091,859.00 193,813.760 LINK | 1.2147% |
26 | Coinstore | LINK-USDT | $10.78 0.0043600 Eth | $2,084,707.00 193,244.260 LINK | 1.2112% |
27 | AscendEX (BitMax) | LINK-USDT | $10.80 0.0043646 Eth | $1,712,288.00 158,506.500 LINK | 0.9935% |
28 | BYDFi | LINK-USDT | $10.80 0.0043652 Eth | $1,421,643.00 131,673.130 LINK | 0.8253% |
29 | WhiteBIT | LINK-BTC | $10.80 0.0043625 Eth | $1,066,538.00 98,765.390 LINK | 0.6190% |
30 | Nonkyc.io | LINK-USDT | $10.83 0.0043781 Eth | $999,158.00 93,078.180 LINK | 0.5834% |
31 | Dex-Trade | LINK-USDT | $10.80 0.0043647 Eth | $962,843.00 89,126.240 LINK | 0.5586% |
32 | XT.COM | LINK-ETH | $10.79 0.0043601 Eth | $948,564.00 85,738.730 LINK | 0.5374% |
33 | Azbit | LINK-ETH | $10.81 0.0043682 Eth | $932,515.00 85,437.799 LINK | 0.5355% |
34 | HashKey Global | LINK-USDT | $10.82 0.0043733 Eth | $885,101.00 80,410.098 LINK | 0.5040% |
35 | Bitvavo | LINK-EUR | $10.81 0.0043695 Eth | $755,515.00 69,866.735 LINK | 0.4379% |
36 | AscendEX (BitMax) | LINK-BTC | $10.87 0.0043905 Eth | $594,445.00 54,703.200 LINK | 0.3429% |
37 | EXMO | LINK-USDT | $10.81 0.0043652 Eth | $570,271.00 52,775.181 LINK | 0.3308% |
38 | LATOKEN | LINK-USDT | $10.81 0.0043663 Eth | $567,541.00 52,524.834 LINK | 0.3292% |
39 | BitStorage | LINK-ETH | $10.81 0.0043676 Eth | $501,224.00 46,383.940 LINK | 0.2907% |
40 | PointPay | LINK-USDT | $10.83 0.0043730 Eth | $475,905.00 44,118.636 LINK | 0.2765% |
41 | tanX | LINK-USDC | $10.81 0.0043651 Eth | $447,160.00 41,357.970 LINK | 0.2592% |
42 | CoinEx | LINK-USDT | $10.79 0.0043634 Eth | $446,490.00 41,344.204 LINK | 0.2591% |
43 | BigONE | LINK-USDT | $10.84 0.0043807 Eth | $429,347.00 39,598.520 LINK | 0.2482% |
44 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $10.85 0.0043852 Eth | $425,509.00 39,124.231 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2452% |
45 | itBit | LINK-USD | $10.80 0.0043669 Eth | $413,289.00 38,267.472 LINK | 0.2398% |
46 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $10.80 0.0043635 Eth | $376,237.00 34,279.338 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2148% |
47 | Bybit | LINK-USDC | $10.82 0.0043702 Eth | $370,770.00 34,457.408 LINK | 0.2160% |
48 | Hotcoin | LINK-ETH | $10.81 0.0043671 Eth | $367,359.00 33,991.020 LINK | 0.2130% |
49 | EarnBIT | LINK-USDT | $10.81 0.0043671 Eth | $311,220.00 28,881.569 LINK | 0.1810% |
50 | WhiteBIT | LINK-EUR | $10.86 0.0043888 Eth | $307,238.00 28,280.460 LINK | 0.1773% |
51 | Phemex | LINK-USDT | $10.80 0.0043647 Eth | $293,026.00 27,124.140 LINK | 0.1700% |
52 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $10.78 0.0043573 Eth | $265,684.00 24,512.911 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1536% |
53 | Slex | LINK-ETH | $10.81 0.0043691 Eth | $199,551.00 18,293.910 LINK | 0.1147% |
54 | BitMart | LINK-BTC | $10.80 0.0043631 Eth | $195,543.00 18,104.560 LINK | 0.1135% |
55 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $10.80 0.0043621 Eth | $161,966.00 15,002.302 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0940% |
56 | Bitbank | LINK-JPY | $10.82 0.0043691 Eth | $160,241.00 14,816.030 LINK | 0.0929% |
57 | Coinbase Exchange | LINK-EUR | $10.82 0.0043731 Eth | $159,890.00 14,772.010 LINK | 0.0926% |
58 | BitDelta | LINK-USDT | $10.82 0.0043693 Eth | $141,587.00 13,130.000 LINK | 0.0823% |
59 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $10.81 0.0043663 Eth | $133,613.00 12,453.370 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0781% |
60 | Coinbase Exchange | LINK-GBP | $10.80 0.0043621 Eth | $126,949.00 11,756.800 LINK | 0.0737% |
61 | Coinbase Exchange | LINK-USDT | $10.79 0.0043617 Eth | $116,906.00 10,830.819 LINK | 0.0679% |
62 | BYDFi | LINK-USDC | $10.82 0.0043705 Eth | $116,840.00 10,802.320 LINK | 0.0677% |
63 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $10.86 0.0043866 Eth | $115,598.00 10,595.095 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0664% |
64 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $10.79 0.0043576 Eth | $112,934.00 112,585.122 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.7056% |
65 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $10.78 0.0043561 Eth | $88,565.00 88,185.071 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.5527% |
66 | OKX | LINK-USDC | $10.80 0.0043649 Eth | $86,330.00 8,025.441 LINK | 0.0503% |
67 | Slex | LINK-BTC | $10.80 0.0043647 Eth | $82,115.00 7,524.000 LINK | 0.0472% |
68 | GMO Japan | LINK-JPY | $10.87 0.0043933 Eth | $72,832.00 6,698.000 LINK | 0.0420% |
69 | Coinbase Exchange | LINK-BTC | $10.80 0.0043645 Eth | $61,977.00 5,739.590 LINK | 0.0360% |
70 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $10.78 0.0043549 Eth | $52,027.00 4,868.135 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0305% |
71 | PointPay | LINK-BTC | $10.79 0.0043610 Eth | $51,286.00 4,712.479 LINK | 0.0295% |
72 | KuCoin | LINK-BTC | $10.79 0.0043595 Eth | $49,158.00 4,555.130 LINK | 0.0285% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $10.79 0.0043576 Eth | $44,766.00 4,164.463 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0261% |
74 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $10.76 0.0043511 Eth | $35,325.00 3,252.147 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0204% |
75 | KuCoin | LINK-USDC | $10.79 0.0043604 Eth | $27,286.00 2,527.911 LINK | 0.0158% |
76 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $10.79 0.0043572 Eth | $26,210.00 26,194.706 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1642% |
77 | EXMO | LINK-BTC | $10.80 0.0043642 Eth | $23,484.00 2,173.852 LINK | 0.0136% |
78 | Binance US | LINK-USDT | $10.80 0.0043641 Eth | $21,657.00 2,006.133 LINK | 0.0126% |
79 | Bitso | LINK-USD | $10.82 0.0043712 Eth | $20,948.00 1,935.897 LINK | 0.0121% |
80 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $10.80 0.0043622 Eth | $19,927.09 1,831.600 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0115% |
81 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $10.81 0.0043671 Eth | $18,975.42 1,742.739 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0109% |
82 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $10.78 0.0043569 Eth | $16,945.19 1,561.038 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0098% |
83 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $10.78 0.0043561 Eth | $16,064.89 15,939.460 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0999% |
84 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $10.89 0.0044017 Eth | $9,739.37 892.854 0X5947BB275C521040051D82396192181B413227A3 | 0.0056% |
85 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $10.78 0.0043573 Eth | $9,398.52 874.187 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0055% |
86 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $10.82 0.0043762 Eth | $8,355.16 762.957 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0048% |
87 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $10.81 0.0043675 Eth | $5,814.08 541.322 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0034% |
88 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $10.84 0.0043806 Eth | $5,380.37 495.857 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0031% |
89 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $10.88 0.0043941 Eth | $5,216.27 478.844 0X5947BB275C521040051D82396192181B413227A3 | 0.0030% |
90 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $10.79 0.0043582 Eth | $4,402.06 408.599 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0026% |
91 | CoinEx | LINK-BTC | $10.82 0.0043775 Eth | $2,699.53 247.440 LINK | 0.0016% |
92 | CoinEx | LINK-USDC | $10.84 0.0043790 Eth | $2,448.11 225.694 LINK | 0.0014% |
93 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $10.88 0.0043960 Eth | $1,608.76 147.693 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0009% |
94 | Uniswap V3 (Arbitrum One) | 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $10.73 0.0043361 Eth | $995.32 226.757 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8 | 0.0014% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $10.88 0.0043960 Eth | $841.36 77.983 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0005% |
96 | PancakeSwap V3 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $10.84 0.0043791 Eth | $408.03 37.518 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0002% |
97 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $10.85 0.0043856 Eth | $405.58 31.551 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0002% |
98 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $10.80 0.0043639 Eth | $404.52 37.534 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0002% |
99 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $10.85 0.0043905 Eth | $358.30 33.052 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0002% |
100 | Uniswap V3 (Arbitrum One) | 0X912CE59144191C1204E64559FE8253A0E49E6548-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $10.78 0.0043598 Eth | $281.88 589.401 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0037% |
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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