ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
734,720 ( 0.017%)
Market
Price
$19.14 @ 0.007089 ETH (+3.57%)
Onchain Market Cap
$19,140,000,000.00
Circulating Supply Market Cap
$12,190,825,220.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | LINK-USD | $19.21 0.0071250 Eth | $30,022,465.00 1,563,100.180 LINK | 14.5038% |
2 | ![]() | LINK-USDT | $19.11 0.0070912 Eth | $25,290,103.00 1,323,225.470 LINK | 12.2780% |
3 | ![]() | LINK-USDT | $19.22 0.0071235 Eth | $22,303,429.00 1,194,622.595 LINK | 11.0847% |
4 | ![]() | LINK-USDT | $19.22 0.0071238 Eth | $19,033,127.00 1,019,408.775 LINK | 9.4589% |
5 | ![]() | LINK-USDT | $19.14 0.0070896 Eth | $9,430,677.00 492,685.880 LINK | 4.5716% |
6 | ![]() | LINK-USDT | $19.22 0.0071252 Eth | $6,800,397.00 362,631.183 LINK | 3.3648% |
7 | ![]() | LINK-USDT | $19.12 0.0070948 Eth | $5,220,861.00 279,270.380 LINK | 2.5913% |
8 | ![]() | LINK-USDT | $19.16 0.0071075 Eth | $4,643,444.00 242,353.235 LINK | 2.2488% |
9 | ![]() | LINK-USDT | $19.20 0.0071230 Eth | $4,406,242.00 235,350.300 LINK | 2.1838% |
10 | ![]() | LINK-USDT | $19.11 0.0070788 Eth | $4,378,320.00 229,083.552 LINK | 2.1256% |
11 | ![]() | LINK-USDT | $19.19 0.0071144 Eth | $3,971,311.00 212,153.730 LINK | 1.9685% |
12 | ![]() | LINK-USDT | $19.05 0.0070831 Eth | $3,913,775.00 205,459.680 LINK | 1.9064% |
13 | ![]() | LINK-FDUSD | $19.29 0.0071520 Eth | $3,895,906.00 207,611.490 LINK | 1.9264% |
14 | ![]() | LINK-USDT | $19.13 0.0070986 Eth | $3,796,146.00 198,413.780 LINK | 1.8410% |
15 | ![]() | LINK-USDT | $19.14 0.0070912 Eth | $3,576,819.00 186,875.220 LINK | 1.7340% |
16 | ![]() | LINK-USDT | $19.19 0.0071137 Eth | $3,375,967.00 175,885.630 LINK | 1.6320% |
17 | ![]() | LINK-USDT | $19.13 0.0070897 Eth | $2,621,612.00 140,050.824 LINK | 1.2995% |
18 | ![]() | LINK-USD | $19.19 0.0071119 Eth | $2,612,459.00 136,120.515 LINK | 1.2630% |
19 | ![]() | LINK-USDT | $19.19 0.0071053 Eth | $2,565,668.00 133,723.860 LINK | 1.2408% |
20 | ![]() | LINK-USDT | $19.12 0.0070860 Eth | $2,158,402.00 112,881.724 LINK | 1.0474% |
21 | ![]() | LINK-USDT | $19.06 0.0070941 Eth | $1,752,350.00 93,637.884 LINK | 0.8689% |
22 | ![]() | LINK-USDT | $19.12 0.0070939 Eth | $1,723,518.00 92,228.467 LINK | 0.8558% |
23 | ![]() | LINK-USDT | $19.03 0.0070780 Eth | $1,517,702.00 79,745.960 LINK | 0.7399% |
24 | ![]() | LINK-EUR | $19.22 0.0071217 Eth | $1,478,568.00 76,934.430 LINK | 0.7139% |
25 | ![]() | LINK-USDT | $19.14 0.0070996 Eth | $1,374,469.00 73,523.840 LINK | 0.6822% |
26 | ![]() | LINK-EUR | $19.14 0.0070996 Eth | $1,320,784.00 69,014.333 LINK | 0.6404% |
27 | ![]() | LINK-ETH | $19.14 0.0070884 Eth | $1,173,053.00 62,250.880 LINK | 0.5776% |
28 | ![]() | LINK-USDT | $19.14 0.0070876 Eth | $1,057,342.00 56,602.426 LINK | 0.5252% |
29 | ![]() | LINK-BTC | $19.11 0.0070885 Eth | $1,007,889.00 53,810.700 LINK | 0.4993% |
30 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.10 0.0070860 Eth | $965,612.00 51,259.004 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.4756% |
31 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.15 0.0071014 Eth | $955,826.00 50,618.633 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.4697% |
32 | ![]() | LINK-GBP | $19.20 0.0071147 Eth | $881,445.00 45,908.890 LINK | 0.4260% |
33 | ![]() | LINK-USDT | $19.14 0.0070884 Eth | $742,804.00 39,818.920 LINK | 0.3695% |
34 | ![]() | LINK-USDC | $19.14 0.0070917 Eth | $734,340.00 39,232.970 LINK | 0.3640% |
35 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.11 0.0070831 Eth | $667,962.00 35,427.302 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.3287% |
36 | ![]() | LINK-USDT | $19.09 0.0070750 Eth | $657,167.00 35,074.833 LINK | 0.3255% |
37 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.20 0.0071241 Eth | $629,943.00 34,642.310 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.3214% |
38 | ![]() | LINK-BTC | $19.15 0.0070948 Eth | $541,786.00 28,293.430 LINK | 0.2625% |
39 | ![]() | LINK-USDT | $19.13 0.0070969 Eth | $521,073.00 27,241.699 LINK | 0.2528% |
40 | ![]() | LINK-JPY | $19.17 0.0071123 Eth | $508,831.00 26,539.479 LINK | 0.2463% |
41 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.15 0.0071027 Eth | $490,006.00 25,921.746 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2405% |
42 | ![]() | LINK-BTC | $19.10 0.0070859 Eth | $484,007.00 25,339.333 LINK | 0.2351% |
43 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $19.09 0.0070825 Eth | $473,867.00 25,307.266 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2348% |
44 | ![]() | LINK-USDT | $19.04 0.0070563 Eth | $462,609.00 24,294.760 LINK | 0.2254% |
45 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.10 0.0070826 Eth | $430,983.00 421,895.396 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 3.9147% |
46 | ![]() | LINK-TRY | $19.13 0.0070846 Eth | $424,998.00 22,810.050 LINK | 0.2117% |
47 | ![]() | LINK-EUR | $19.17 0.0071103 Eth | $415,291.00 22,139.200 LINK | 0.2054% |
48 | ![]() | LINK-USDT | $19.15 0.0070932 Eth | $400,385.00 21,465.164 LINK | 0.1992% |
49 | ![]() | LINK-USDC | $19.09 0.0070737 Eth | $381,862.00 20,405.558 LINK | 0.1893% |
50 | ![]() | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $19.20 0.0071205 Eth | $363,155.00 35,970.850 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.3338% |
51 | ![]() | LINK-USD | $19.19 0.0071125 Eth | $344,096.00 17,934.826 LINK | 0.1664% |
52 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.20 0.0071217 Eth | $344,079.00 18,170.714 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1686% |
53 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.15 0.0071038 Eth | $302,786.00 16,244.394 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1507% |
54 | ![]() | LINK-BTC | $19.11 0.0070913 Eth | $260,748.00 13,641.140 LINK | 0.1266% |
55 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.14 0.0070980 Eth | $259,353.00 13,744.812 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1275% |
56 | ![]() | LINK-USDC | $19.09 0.0070817 Eth | $228,614.00 12,232.337 LINK | 0.1135% |
57 | ![]() | LINK-USDT | $19.24 0.0071282 Eth | $221,848.00 11,531.068 LINK | 0.1070% |
58 | ![]() | LINK-USDT | $19.08 0.0070797 Eth | $216,580.00 11,622.000 LINK | 0.1078% |
59 | ![]() | LINK-BTC | $19.11 0.0070886 Eth | $210,646.00 11,023.526 LINK | 0.1023% |
60 | ![]() | LINK-ETH | $19.14 0.0070904 Eth | $160,519.00 8,520.320 LINK | 0.0791% |
61 | ![]() | LINK-TRY | $19.09 0.0070715 Eth | $148,861.00 7,995.750 LINK | 0.0742% |
62 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.19 0.0071187 Eth | $147,625.00 7,935.006 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0736% |
63 | ![]() | LINK-ETH | $19.01 0.0070717 Eth | $136,510.00 7,179.840 LINK | 0.0666% |
64 | ![]() | LINK-BTC | $19.12 0.0070935 Eth | $131,313.00 6,868.260 LINK | 0.0637% |
65 | ![]() | LINK-TRY | $19.07 0.0070677 Eth | $126,055.00 6,609.530 LINK | 0.0613% |
66 | ![]() | LINK-USDC | $19.23 0.0071202 Eth | $124,186.00 6,459.090 LINK | 0.0599% |
67 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $19.24 0.0071268 Eth | $120,575.00 6,442.914 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0598% |
68 | ![]() | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.15 0.0071014 Eth | $101,530.00 98,886.263 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.9175% |
69 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $19.05 0.0070657 Eth | $97,385.00 5,187.712 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0481% |
70 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.10 0.0070866 Eth | $88,586.00 4,914.083 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0456% |
71 | ![]() | LINK-PLN | $19.25 0.0071336 Eth | $82,282.00 0.000 LINK | 0.0000% |
72 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $19.18 0.0071162 Eth | $80,163.00 4,341.596 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0403% |
73 | ![]() | LINK-THB | $19.19 0.0071098 Eth | $76,815.00 4,002.796 LINK | 0.0371% |
74 | ![]() | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $19.13 0.0070932 Eth | $72,499.00 3,837.743 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0356% |
75 | ![]() | LINK-ETH | $19.09 0.0070827 Eth | $69,283.00 3,628.940 LINK | 0.0337% |
76 | ![]() | LINK-USD | $19.10 0.0070774 Eth | $64,295.00 3,365.792 LINK | 0.0312% |
77 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.14 0.0071006 Eth | $62,500.00 61,141.922 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.5673% |
78 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $19.15 0.0070948 Eth | $57,543.00 3,040.812 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0282% |
79 | ![]() | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $19.13 0.0070967 Eth | $51,747.00 67.358 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0006% |
80 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $19.11 0.0070898 Eth | $50,530.00 2,677.257 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0248% |
81 | ![]() | LINK-BRL | $19.13 0.0070908 Eth | $45,333.00 2,370.059 LINK | 0.0220% |
82 | ![]() | LINK-ETH | $19.12 0.0070938 Eth | $36,276.00 1,896.990 LINK | 0.0176% |
83 | ![]() | LINK-BTC | $18.95 0.0070243 Eth | $33,463.00 1,766.040 LINK | 0.0164% |
84 | ![]() | LINK-BTC | $19.18 0.0071155 Eth | $31,602.00 1,647.530 LINK | 0.0153% |
85 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $19.13 0.0070949 Eth | $23,583.00 1,347.361 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0125% |
86 | ![]() | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $19.18 0.0071150 Eth | $22,602.00 1,210.182 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0112% |
87 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $19.21 0.0071243 Eth | $20,512.00 1,083.977 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0101% |
88 | ![]() | LINK-BTC | $19.23 0.0071298 Eth | $18,155.96 944.022 LINK | 0.0088% |
89 | ![]() | LINK-ETH | $19.14 0.0070837 Eth | $16,605.01 867.610 LINK | 0.0081% |
90 | ![]() | 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $19.18 0.0071160 Eth | $14,178.21 1,728.047 0XCF6BB5389C92BDDA8A3747DDB454CB7A64626C63 | 0.0160% |
91 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.17 0.0071055 Eth | $13,860.15 769.448 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0071% |
92 | ![]() | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $19.11 0.0070909 Eth | $12,894.07 49.164 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0005% |
93 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $19.22 0.0071199 Eth | $12,203.93 652.354 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0061% |
94 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $19.16 0.0071074 Eth | $11,480.62 612.036 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0057% |
95 | ![]() | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $19.12 0.0070946 Eth | $11,204.06 10,947.449 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1016% |
96 | ![]() | LINK-USDC | $19.15 0.0070942 Eth | $8,520.28 455.135 LINK | 0.0042% |
97 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $19.12 0.0070835 Eth | $6,848.17 378.571 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0035% |
98 | ![]() | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $19.10 0.0070838 Eth | $6,417.03 339.728 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0032% |
99 | ![]() | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $19.18 0.0071147 Eth | $6,059.85 321.421 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0030% |
100 | ![]() | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $19.17 0.0071107 Eth | $5,861.64 310.833 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0029% |
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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