ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
727,187 ( 0.008%)
Market
Price
$24.55 @ 0.007066 ETH (-1.01%)
Onchain Market Cap
$24,550,000,000.00
Circulating Supply Market Cap
$15,482,324,229.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $24.53 0.0070609 Eth | $163,388,141.00 6,536,167.150 LINK | 26.6529% |
2 | Coinbase Exchange | LINK-USD | $24.55 0.0070694 Eth | $48,627,367.00 1,980,425.480 LINK | 8.0757% |
3 | Bybit | LINK-USDT | $24.54 0.0070654 Eth | $38,359,381.00 1,532,870.784 LINK | 6.2507% |
4 | CoinW | LINK-USDT | $24.55 0.0070675 Eth | $29,474,545.00 1,200,726.590 LINK | 4.8963% |
5 | Slex | LINK-USDT | $24.54 0.0070634 Eth | $25,544,247.00 1,025,450.690 LINK | 4.1815% |
6 | OKX | LINK-USDT | $24.53 0.0070617 Eth | $25,511,830.00 1,019,767.113 LINK | 4.1584% |
7 | DigiFinex | LINK-USDT | $24.53 0.0070625 Eth | $20,615,639.00 840,295.660 LINK | 3.4265% |
8 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $24.64 0.0070930 Eth | $18,683,987.00 745,214.622 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 3.0388% |
9 | XT.COM | LINK-USDT | $24.54 0.0070646 Eth | $17,965,089.00 718,155.190 LINK | 2.9285% |
10 | FameEX | LINK-USDT | $24.55 0.0070704 Eth | $16,337,310.00 653,611.999 LINK | 2.6653% |
11 | Azbit | LINK-USDT | $24.56 0.0070709 Eth | $16,141,384.00 645,819.241 LINK | 2.6335% |
12 | Coinstore | LINK-USDT | $24.56 0.0070710 Eth | $13,978,229.00 559,818.780 LINK | 2.2828% |
13 | Bitunix | LINK-USDT | $24.55 0.0070690 Eth | $12,749,944.00 519,315.250 LINK | 2.1176% |
14 | HTX | LINK-USDT | $24.54 0.0070663 Eth | $12,083,869.00 485,172.849 LINK | 1.9784% |
15 | BYDFi | LINK-USDT | $24.50 0.0070559 Eth | $9,540,560.00 389,340.050 LINK | 1.5876% |
16 | Biconomy.com | LINK-USDT | $24.54 0.0070661 Eth | $8,351,799.00 334,576.170 LINK | 1.3643% |
17 | LATOKEN | LINK-USDT | $24.56 0.0070703 Eth | $7,798,197.00 317,552.856 LINK | 1.2949% |
18 | Kraken | LINK-USD | $24.55 0.0070663 Eth | $7,365,481.00 300,046.490 LINK | 1.2235% |
19 | KuCoin | LINK-USDT | $24.54 0.0070634 Eth | $6,673,981.00 271,989.210 LINK | 1.1091% |
20 | QMall | LINK-USDT | $24.56 0.0070715 Eth | $6,636,379.00 265,334.005 LINK | 1.0820% |
21 | Dex-Trade | LINK-USDT | $24.57 0.0070698 Eth | $5,370,382.00 218,573.580 LINK | 0.8913% |
22 | Hotcoin | LINK-USDT | $24.54 0.0070634 Eth | $3,815,739.00 155,504.740 LINK | 0.6341% |
23 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $24.63 0.0070909 Eth | $3,576,518.00 142,415.676 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.5807% |
24 | Bitvavo | LINK-EUR | $24.60 0.0070826 Eth | $3,433,335.00 139,545.455 LINK | 0.5690% |
25 | Bitstamp | LINK-USD | $24.55 0.0070672 Eth | $2,984,333.00 121,561.441 LINK | 0.4957% |
26 | Dcoin | LINK-USDT | $24.58 0.0070766 Eth | $2,873,839.00 116,923.000 LINK | 0.4768% |
27 | PointPay | LINK-USDT | $24.53 0.0070724 Eth | $2,690,814.00 107,621.328 LINK | 0.4389% |
28 | CoinEx | LINK-USDT | $24.54 0.0070637 Eth | $2,685,959.00 107,377.936 LINK | 0.4379% |
29 | EXMO | LINK-USDT | $24.57 0.0070730 Eth | $2,495,526.00 101,567.723 LINK | 0.4142% |
30 | Coinbase Exchange | LINK-EUR | $24.59 0.0070805 Eth | $2,140,662.00 87,038.830 LINK | 0.3549% |
31 | WhiteBIT | LINK-BTC | $24.53 0.0070643 Eth | $1,957,410.00 79,786.160 LINK | 0.3253% |
32 | WhiteBIT | LINK-TRY | $24.67 0.0071052 Eth | $1,865,435.00 75,616.460 LINK | 0.3083% |
33 | Phemex | LINK-USDT | $24.56 0.0070703 Eth | $1,648,538.00 67,129.530 LINK | 0.2737% |
34 | Bitstamp | LINK-EUR | $24.59 0.0070800 Eth | $1,557,052.00 63,309.397 LINK | 0.2582% |
35 | BitStorage | LINK-USDT | $24.55 0.0070680 Eth | $1,302,022.00 53,037.820 LINK | 0.2163% |
36 | tanX | LINK-USDC | $24.57 0.0070736 Eth | $1,292,545.00 51,804.760 LINK | 0.2112% |
37 | EarnBIT | LINK-USDT | $24.55 0.0070668 Eth | $1,208,011.00 48,242.868 LINK | 0.1967% |
38 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $24.61 0.0070845 Eth | $1,185,039.00 47,376.370 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1932% |
39 | Binance | LINK-TRY | $24.71 0.0071124 Eth | $1,040,565.00 41,374.200 LINK | 0.1687% |
40 | Bitbank | LINK-JPY | $24.55 0.0070689 Eth | $1,020,924.00 41,578.586 LINK | 0.1695% |
41 | Coinbase Exchange | LINK-USDT | $24.49 0.0070493 Eth | $1,013,857.00 41,402.447 LINK | 0.1688% |
42 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $24.64 0.0070939 Eth | $1,007,811.00 40,123.675 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1636% |
43 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $24.53 0.0070616 Eth | $912,444.00 36,882.702 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1504% |
44 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $24.59 0.0070783 Eth | $820,375.00 832,253.614 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 3.3937% |
45 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $24.64 0.0070914 Eth | $816,822.00 32,638.411 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1331% |
46 | WhiteBIT | LINK-EUR | $24.58 0.0070771 Eth | $724,675.00 29,482.590 LINK | 0.1202% |
47 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $24.64 0.0070932 Eth | $687,427.00 48,739.826 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.1987% |
48 | Coinbase Exchange | LINK-ETH | $24.52 0.0070584 Eth | $649,526.00 26,494.170 LINK | 0.1080% |
49 | BigONE | LINK-USDT | $24.44 0.0070488 Eth | $624,983.00 25,571.170 LINK | 0.1043% |
50 | Azbit | LINK-ETH | $24.55 0.0070684 Eth | $619,018.00 24,963.327 LINK | 0.1018% |
51 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $24.68 0.0071057 Eth | $603,729.00 24,048.587 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0981% |
52 | HashKey Exchange | LINK-USD | $24.56 0.0070719 Eth | $552,152.00 22,118.164 LINK | 0.0902% |
53 | KuCoin | LINK-USDC | $24.51 0.0070562 Eth | $533,362.00 21,758.621 LINK | 0.0887% |
54 | Gemini | LINK-USD | $24.59 0.0070776 Eth | $502,037.00 20,419.482 LINK | 0.0833% |
55 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $24.60 0.0070828 Eth | $454,606.00 462,227.437 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.8849% |
56 | Slex | LINK-ETH | $24.56 0.0070728 Eth | $441,458.00 17,761.190 LINK | 0.0724% |
57 | GMO Japan | LINK-JPY | $24.48 0.0070485 Eth | $426,891.00 17,437.400 LINK | 0.0711% |
58 | BitMart | LINK-BTC | $24.56 0.0070709 Eth | $393,046.00 16,005.080 LINK | 0.0653% |
59 | DeGate | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $24.55 0.0070679 Eth | $377,694.00 15,124.565 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0617% |
60 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $24.63 0.0070909 Eth | $358,612.00 364,798.928 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 1.4876% |
61 | Coinbase Exchange | LINK-BTC | $24.53 0.0070606 Eth | $335,758.00 13,688.640 LINK | 0.0558% |
62 | BitDelta | LINK-USDT | $24.55 0.0070679 Eth | $322,761.00 12,940.000 LINK | 0.0528% |
63 | LATOKEN | LINK-BTC | $24.54 0.0070666 Eth | $292,426.00 11,915.025 LINK | 0.0486% |
64 | Binance US | LINK-USDT | $24.58 0.0070762 Eth | $256,115.00 10,421.078 LINK | 0.0425% |
65 | Bitkub | LINK-THB | $24.60 0.0070827 Eth | $252,867.00 10,279.015 LINK | 0.0419% |
66 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $24.54 0.0070641 Eth | $245,523.00 9,829.851 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0401% |
67 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $24.51 0.0070556 Eth | $239,551.00 9,689.216 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0395% |
68 | PointPay | LINK-BTC | $24.55 0.0070703 Eth | $219,259.00 8,679.108 LINK | 0.0354% |
69 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $24.64 0.0070930 Eth | $215,992.00 8,598.780 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0351% |
70 | BitMart | LINK-ETH | $24.56 0.0070727 Eth | $213,110.00 8,675.760 LINK | 0.0354% |
71 | BitStorage | LINK-ETH | $24.56 0.0070697 Eth | $203,928.00 8,304.330 LINK | 0.0339% |
72 | BTCMarkets | LINK-AUD | $24.61 0.0070844 Eth | $195,242.00 7,934.747 LINK | 0.0324% |
73 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $24.55 0.0070677 Eth | $181,841.00 7,240.717 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0295% |
74 | KuCoin | LINK-BTC | $24.50 0.0070527 Eth | $179,569.00 7,329.187 LINK | 0.0299% |
75 | Hotcoin | LINK-BTC | $24.53 0.0070739 Eth | $137,789.00 5,616.250 LINK | 0.0229% |
76 | Bitso | LINK-USD | $24.53 0.0070633 Eth | $136,670.00 5,570.994 LINK | 0.0227% |
77 | Kanga | LINK-PLN | $24.57 0.0070755 Eth | $120,596.00 0.000 LINK | 0.0000% |
78 | EXMO | LINK-BTC | $24.80 0.0071386 Eth | $93,275.00 3,761.360 LINK | 0.0153% |
79 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $24.53 0.0070634 Eth | $91,860.00 3,655.354 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0149% |
80 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $24.63 0.0070909 Eth | $85,062.00 3,367.780 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0137% |
81 | Bitexen | LINK-TRY | $24.41 0.0070276 Eth | $62,597.00 2,563.937 LINK | 0.0105% |
82 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $24.57 0.0070717 Eth | $62,378.00 83.481 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0003% |
83 | Nonkyc.io | LINK-BTC | $24.65 0.0070975 Eth | $59,934.00 2,387.970 LINK | 0.0097% |
84 | Hotcoin | LINK-ETH | $24.54 0.0070746 Eth | $46,951.00 1,913.650 LINK | 0.0078% |
85 | Independent Reserve | LINK-AUD | $24.63 0.0070914 Eth | $45,198.00 1,835.131 LINK | 0.0075% |
86 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $24.57 0.0070716 Eth | $41,719.00 1,682.165 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0069% |
87 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $24.61 0.0070845 Eth | $40,219.00 1,637.530 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0067% |
88 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $24.51 0.0070573 Eth | $29,323.00 1,168.714 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0048% |
89 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $24.58 0.0070743 Eth | $25,705.00 1,042.141 0X5947BB275C521040051D82396192181B413227A3 | 0.0042% |
90 | Gemini | LINK-BTC | $24.50 0.0070527 Eth | $25,502.00 1,040.910 LINK | 0.0042% |
91 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $24.66 0.0071000 Eth | $24,886.00 986.570 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0040% |
92 | Binance US | LINK-BTC | $24.57 0.0070753 Eth | $24,238.00 986.355 LINK | 0.0040% |
93 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $24.67 0.0071036 Eth | $23,490.00 933.133 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0038% |
94 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $24.61 0.0070834 Eth | $17,375.30 693.558 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0028% |
95 | Biswap V3 | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $24.57 0.0070714 Eth | $17,172.03 682.837 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0028% |
96 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $24.63 0.0070892 Eth | $15,030.43 15,292.802 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0624% |
97 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $24.55 0.0070687 Eth | $12,118.87 484.542 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0020% |
98 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $24.53 0.0070633 Eth | $10,692.25 432.761 0X5947BB275C521040051D82396192181B413227A3 | 0.0018% |
99 | KuCoin | LINK-KCS | $24.52 0.0070578 Eth | $9,936.54 405.268 LINK | 0.0017% |
100 | Ace | LINK-USDT | $24.52 0.0070637 Eth | $6,277.64 251.230 LINK | 0.0010% |
Contract Name:
LinkToken
Compiler Version
v0.4.16+commit.d7661dd9
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity)Audit Report
/** *Submitted for verification at Etherscan.io on 2017-09-23 */ pragma solidity ^0.4.16; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal constant returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal constant returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) constant returns (uint256); function transfer(address to, uint256 value) returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) constant returns (uint256); function transferFrom(address from, address to, uint256 value) returns (bool); function approve(address spender, uint256 value) returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract ERC677 is ERC20 { function transferAndCall(address to, uint value, bytes data) returns (bool success); event Transfer(address indexed from, address indexed to, uint value, bytes data); } contract ERC677Receiver { function onTokenTransfer(address _sender, uint _value, bytes _data); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) returns (bool) { balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) returns (bool) { var _allowance = allowed[_from][msg.sender]; // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met // require (_value <= _allowance); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = _allowance.sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } /* * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol */ function increaseApproval (address _spender, uint _addedValue) returns (bool success) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval (address _spender, uint _subtractedValue) returns (bool success) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract ERC677Token is ERC677 { /** * @dev transfer token to a contract address with additional data if the recipient is a contact. * @param _to The address to transfer to. * @param _value The amount to be transferred. * @param _data The extra data to be passed to the receiving contract. */ function transferAndCall(address _to, uint _value, bytes _data) public returns (bool success) { super.transfer(_to, _value); Transfer(msg.sender, _to, _value, _data); if (isContract(_to)) { contractFallback(_to, _value, _data); } return true; } // PRIVATE function contractFallback(address _to, uint _value, bytes _data) private { ERC677Receiver receiver = ERC677Receiver(_to); receiver.onTokenTransfer(msg.sender, _value, _data); } function isContract(address _addr) private returns (bool hasCode) { uint length; assembly { length := extcodesize(_addr) } return length > 0; } } contract LinkToken is StandardToken, ERC677Token { uint public constant totalSupply = 10**27; string public constant name = 'ChainLink Token'; uint8 public constant decimals = 18; string public constant symbol = 'LINK'; function LinkToken() public { balances[msg.sender] = totalSupply; } /** * @dev transfer token to a specified address with additional data if the recipient is a contract. * @param _to The address to transfer to. * @param _value The amount to be transferred. * @param _data The extra data to be passed to the receiving contract. */ function transferAndCall(address _to, uint _value, bytes _data) public validRecipient(_to) returns (bool success) { return super.transferAndCall(_to, _value, _data); } /** * @dev transfer token to a specified address. * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint _value) public validRecipient(_to) returns (bool success) { return super.transfer(_to, _value); } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public validRecipient(_spender) returns (bool) { return super.approve(_spender, _value); } /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public validRecipient(_to) returns (bool) { return super.transferFrom(_from, _to, _value); } // MODIFIERS modifier validRecipient(address _recipient) { require(_recipient != address(0) && _recipient != address(this)); _; } }
Contract Security Audit
- Callisto Network - April 14th, 2019 - Security Audit Report
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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