ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
734,677 ( 0.014%)
Market
Price
$19.04 @ 0.007023 ETH (+1.50%)
Onchain Market Cap
$19,040,000,000.00
Circulating Supply Market Cap
$12,153,593,063.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | LINK-USD | $19.08 0.0070414 Eth | $29,184,400.00 1,529,660.860 LINK | 16.7963% |
2 | ![]() | LINK-USDT | $19.13 0.0070588 Eth | $23,280,045.00 1,254,163.805 LINK | 13.7713% |
3 | ![]() | LINK-USDT | $19.14 0.0070650 Eth | $19,579,202.00 1,052,632.622 LINK | 11.5584% |
4 | ![]() | LINK-USDT | $19.09 0.0070451 Eth | $8,765,429.00 459,177.050 LINK | 5.0420% |
5 | ![]() | LINK-USDT | $19.13 0.0070607 Eth | $6,201,909.00 333,582.285 LINK | 3.6629% |
6 | ![]() | LINK-USDT | $19.12 0.0070552 Eth | $5,319,123.00 286,386.160 LINK | 3.1446% |
7 | ![]() | LINK-USDT | $19.04 0.0070241 Eth | $5,121,269.00 268,908.360 LINK | 2.9527% |
8 | ![]() | LINK-USDT | $19.11 0.0070537 Eth | $4,653,881.00 243,488.530 LINK | 2.6736% |
9 | ![]() | LINK-USDT | $19.09 0.0070478 Eth | $4,237,515.00 221,940.959 LINK | 2.4370% |
10 | ![]() | LINK-USDT | $19.10 0.0070486 Eth | $4,204,413.00 226,088.170 LINK | 2.4825% |
11 | ![]() | LINK-USDT | $19.08 0.0070446 Eth | $4,085,436.00 214,092.490 LINK | 2.3508% |
12 | ![]() | LINK-USDT | $19.09 0.0070446 Eth | $3,732,754.00 200,864.530 LINK | 2.2056% |
13 | ![]() | LINK-USDT | $19.06 0.0070357 Eth | $3,431,733.00 180,084.160 LINK | 1.9774% |
14 | ![]() | LINK-USD | $19.12 0.0070552 Eth | $3,427,018.00 179,261.087 LINK | 1.9684% |
15 | ![]() | LINK-USDT | $19.09 0.0070454 Eth | $3,149,212.00 164,942.330 LINK | 1.8111% |
16 | ![]() | LINK-USDT | $19.08 0.0070446 Eth | $2,506,193.00 134,794.645 LINK | 1.4801% |
17 | ![]() | LINK-USDT | $19.02 0.0070213 Eth | $2,390,500.00 125,659.990 LINK | 1.3798% |
18 | ![]() | LINK-USDT | $19.09 0.0070447 Eth | $2,059,579.00 107,908.195 LINK | 1.1849% |
19 | ![]() | LINK-USDT | $19.14 0.0070626 Eth | $1,730,029.00 93,058.632 LINK | 1.0218% |
20 | ![]() | LINK-USDT | $19.08 0.0070423 Eth | $1,709,570.00 91,971.118 LINK | 1.0099% |
21 | ![]() | LINK-EUR | $19.09 0.0070464 Eth | $1,424,132.00 74,591.040 LINK | 0.8190% |
22 | ![]() | LINK-USDT | $19.07 0.0070375 Eth | $1,386,428.00 72,714.010 LINK | 0.7984% |
23 | ![]() | LINK-USDT | $19.10 0.0070509 Eth | $1,315,844.00 70,753.550 LINK | 0.7769% |
24 | ![]() | LINK-EUR | $19.05 0.0070321 Eth | $1,207,022.00 63,372.342 LINK | 0.6959% |
25 | ![]() | LINK-ETH | $19.08 0.0070436 Eth | $1,150,240.00 60,992.000 LINK | 0.6697% |
26 | ![]() | LINK-BTC | $19.06 0.0070381 Eth | $1,011,438.00 53,998.700 LINK | 0.5929% |
27 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.04 0.0070264 Eth | $923,175.00 48,934.372 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.5373% |
28 | ![]() | LINK-GBP | $19.09 0.0070445 Eth | $899,566.00 47,128.750 LINK | 0.5175% |
29 | ![]() | LINK-USDT | $19.11 0.0070511 Eth | $833,012.00 44,967.187 LINK | 0.4938% |
30 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.03 0.0070228 Eth | $815,882.00 43,260.474 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.4750% |
31 | ![]() | LINK-USDC | $19.04 0.0070272 Eth | $749,951.00 40,264.160 LINK | 0.4421% |
32 | ![]() | LINK-USDT | $19.07 0.0070398 Eth | $730,511.00 39,318.160 LINK | 0.4317% |
33 | ![]() | LINK-USDT | $19.14 0.0070642 Eth | $652,225.00 35,065.896 LINK | 0.3850% |
34 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $18.98 0.0070070 Eth | $610,827.00 33,860.718 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.3718% |
35 | ![]() | LINK-BTC | $19.08 0.0070423 Eth | $544,237.00 28,521.410 LINK | 0.3132% |
36 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.06 0.0070371 Eth | $536,115.00 28,449.592 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.3124% |
37 | ![]() | LINK-USDT | $19.03 0.0070241 Eth | $508,060.00 26,700.010 LINK | 0.2932% |
38 | ![]() | LINK-USDT | $19.11 0.0070534 Eth | $486,616.00 25,464.600 LINK | 0.2796% |
39 | ![]() | LINK-TRY | $19.04 0.0070282 Eth | $434,473.00 23,425.850 LINK | 0.2572% |
40 | ![]() | LINK-BTC | $19.07 0.0070399 Eth | $426,147.00 22,344.868 LINK | 0.2454% |
41 | ![]() | LINK-USDT | $19.04 0.0070305 Eth | $403,275.00 21,700.719 LINK | 0.2383% |
42 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.07 0.0070396 Eth | $401,734.00 21,256.486 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2334% |
43 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.08 0.0070435 Eth | $380,704.00 370,205.188 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 4.0650% |
44 | ![]() | LINK-JPY | $19.06 0.0070355 Eth | $365,888.00 19,198.690 LINK | 0.2108% |
45 | ![]() | LINK-USDC | $19.11 0.0070511 Eth | $337,653.00 18,190.697 LINK | 0.1997% |
46 | ![]() | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.08 0.0070429 Eth | $317,532.00 31,673.711 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.3478% |
47 | ![]() | LINK-USD | $19.11 0.0070506 Eth | $307,295.00 16,084.481 LINK | 0.1766% |
48 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.04 0.0070264 Eth | $262,586.00 14,192.459 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1558% |
49 | ![]() | LINK-BTC | $19.09 0.0070460 Eth | $259,220.00 13,579.240 LINK | 0.1491% |
50 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.08 0.0070441 Eth | $256,296.00 13,571.786 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1490% |
51 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.07 0.0070398 Eth | $252,182.00 13,364.856 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1468% |
52 | ![]() | LINK-USDT | $19.07 0.0070398 Eth | $219,505.00 11,508.840 LINK | 0.1264% |
53 | ![]() | LINK-USDT | $19.04 0.0070296 Eth | $208,423.00 11,219.000 LINK | 0.1232% |
54 | ![]() | LINK-USDC | $19.13 0.0070592 Eth | $206,113.00 11,127.564 LINK | 0.1222% |
55 | ![]() | LINK-TRY | $19.11 0.0070561 Eth | $194,809.00 10,490.550 LINK | 0.1152% |
56 | ![]() | LINK-JPY | $19.11 0.0070549 Eth | $182,518.00 9,549.100 LINK | 0.1049% |
57 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.05 0.0070318 Eth | $148,787.00 8,021.688 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0881% |
58 | ![]() | LINK-ETH | $19.10 0.0070506 Eth | $148,548.00 7,871.100 LINK | 0.0864% |
59 | ![]() | LINK-BTC | $19.08 0.0070431 Eth | $144,959.00 7,598.910 LINK | 0.0834% |
60 | ![]() | LINK-TRY | $19.00 0.0070108 Eth | $143,047.00 7,713.800 LINK | 0.0847% |
61 | ![]() | LINK-USDC | $19.10 0.0070491 Eth | $134,732.00 7,055.320 LINK | 0.0775% |
62 | ![]() | LINK-ETH | $19.09 0.0070477 Eth | $126,539.00 6,627.160 LINK | 0.0728% |
63 | ![]() | LINK-GBP | $19.04 0.0070278 Eth | $124,056.00 6,514.413 LINK | 0.0715% |
64 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.06 0.0070297 Eth | $123,722.00 6,663.094 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0732% |
65 | ![]() | LINK-TRY | $19.02 0.0070208 Eth | $119,566.00 6,285.160 LINK | 0.0690% |
66 | ![]() | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.04 0.0070264 Eth | $84,641.00 82,316.831 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.9039% |
67 | ![]() | LINK-PLN | $19.17 0.0070742 Eth | $84,621.00 0.000 LINK | 0.0000% |
68 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $19.05 0.0070334 Eth | $77,797.00 4,210.837 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0462% |
69 | ![]() | LINK-THB | $19.03 0.0070250 Eth | $76,495.00 4,018.668 LINK | 0.0441% |
70 | ![]() | LINK-ETH | $19.08 0.0070425 Eth | $70,039.00 3,670.800 LINK | 0.0403% |
71 | ![]() | LINK-USD | $19.06 0.0070346 Eth | $65,741.00 3,449.404 LINK | 0.0379% |
72 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $19.05 0.0070321 Eth | $65,538.00 3,499.712 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0384% |
73 | ![]() | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $19.01 0.0070157 Eth | $56,399.00 2,985.942 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0328% |
74 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.07 0.0070374 Eth | $52,171.00 50,852.836 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.5584% |
75 | ![]() | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $19.00 0.0070133 Eth | $50,444.00 65.753 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0007% |
76 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.08 0.0070423 Eth | $45,288.00 2,398.774 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0263% |
77 | ![]() | LINK-ETH | $19.10 0.0070526 Eth | $39,793.00 2,083.190 LINK | 0.0229% |
78 | ![]() | LINK-BRL | $19.00 0.0070106 Eth | $37,247.00 1,960.646 LINK | 0.0215% |
79 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.02 0.0070194 Eth | $31,101.00 1,649.315 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0181% |
80 | ![]() | LINK-BTC | $19.19 0.0070833 Eth | $30,148.00 1,570.958 LINK | 0.0172% |
81 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $19.03 0.0070226 Eth | $23,701.00 1,350.357 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0148% |
82 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $19.03 0.0070250 Eth | $20,918.00 1,125.745 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0124% |
83 | ![]() | LINK-ETH | $19.09 0.0070464 Eth | $17,568.02 920.090 LINK | 0.0101% |
84 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.08 0.0070431 Eth | $17,145.32 906.884 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0100% |
85 | ![]() | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.04 0.0070287 Eth | $13,335.36 51.084 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0006% |
86 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $19.06 0.0070367 Eth | $10,925.48 587.699 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0065% |
87 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.05 0.0070336 Eth | $10,172.05 9,922.747 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1090% |
88 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.01 0.0070158 Eth | $8,781.28 472.359 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0052% |
89 | ![]() | LINK-USDC | $19.03 0.0070221 Eth | $8,499.68 454.691 LINK | 0.0050% |
90 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.05 0.0070287 Eth | $7,861.02 413.291 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0045% |
91 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $18.94 0.0069904 Eth | $7,738.69 433.148 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0048% |
92 | ![]() | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.06 0.0070356 Eth | $6,405.66 24.570 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0003% |
93 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $18.99 0.0070104 Eth | $4,991.07 265.018 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0029% |
94 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $19.05 0.0070306 Eth | $4,655.11 248.405 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0027% |
95 | ![]() | LINK-BTC | $19.10 0.0070473 Eth | $3,920.83 205.323 LINK | 0.0023% |
96 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $18.98 0.0070040 Eth | $3,791.00 230.980 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0025% |
97 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $19.14 0.0070633 Eth | $3,759.30 197.431 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0022% |
98 | ![]() | LINK-BTC | $19.00 0.0070120 Eth | $3,253.67 173.706 LINK | 0.0019% |
99 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X7130D2A12B9BCBFAE4F2634D864A1EE1CE3EAD9C | $19.01 0.0070183 Eth | $3,128.06 184.827 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0020% |
100 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $18.91 0.0069783 Eth | $2,878.34 152.453 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0017% |
Contract Source Code Verified (Exact Match)
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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