ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
722,349 ( -0.003%)
Market
Price
$11.18 @ 0.004472 ETH (-1.15%)
Onchain Market Cap
$11,180,000,000.00
Circulating Supply Market Cap
$7,010,624,194.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | WhiteBIT | LINK-USDT | $11.17 0.0044663 Eth | $33,669,658.00 3,014,161.890 LINK | 16.7048% |
2 | Binance | LINK-USDT | $11.19 0.0044758 Eth | $31,766,278.00 2,794,176.490 LINK | 15.4856% |
3 | HTX | LINK-USDT | $11.17 0.0044642 Eth | $12,617,055.00 1,113,326.982 LINK | 6.1702% |
4 | Coinbase Exchange | LINK-USD | $11.17 0.0044667 Eth | $11,274,006.00 1,009,130.520 LINK | 5.5927% |
5 | Bitget | LINK-USDT | $11.19 0.0044735 Eth | $10,075,590.00 888,796.043 LINK | 4.9258% |
6 | Bybit | LINK-USDT | $11.20 0.0044757 Eth | $9,948,843.00 877,133.024 LINK | 4.8611% |
7 | BTSE | LINK-USDT | $11.17 0.0044659 Eth | $7,336,734.00 656,957.402 LINK | 3.6409% |
8 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.15 0.0044572 Eth | $7,329,078.00 650,839.304 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 3.6070% |
9 | Gate.io | LINK-USDT | $11.20 0.0044756 Eth | $7,032,285.00 617,698.340 LINK | 3.4233% |
10 | OKX | LINK-USDT | $11.20 0.0044752 Eth | $6,304,239.00 554,491.152 LINK | 3.0730% |
11 | P2B | LINK-USDT | $11.17 0.0044644 Eth | $5,631,715.00 504,269.290 LINK | 2.7947% |
12 | Slex | LINK-USDT | $11.17 0.0044679 Eth | $5,476,414.00 483,027.490 LINK | 2.6770% |
13 | DigiFinex | LINK-USDT | $11.19 0.0044739 Eth | $4,240,942.00 379,027.820 LINK | 2.1006% |
14 | Biconomy.com | LINK-USDT | $11.19 0.0044738 Eth | $3,890,648.00 343,088.200 LINK | 1.9014% |
15 | Azbit | LINK-USDT | $11.18 0.0044714 Eth | $3,734,915.00 329,761.770 LINK | 1.8276% |
16 | XT.COM | LINK-USDT | $11.19 0.0044812 Eth | $3,165,031.00 278,367.820 LINK | 1.5427% |
17 | Bitunix | LINK-USDT | $11.20 0.0044772 Eth | $3,108,530.00 277,666.950 LINK | 1.5389% |
18 | CoinW | LINK-USDT | $11.18 0.0044685 Eth | $2,744,180.00 245,539.170 LINK | 1.3608% |
19 | Hotcoin | LINK-USDT | $11.16 0.0044611 Eth | $2,715,216.00 243,368.840 LINK | 1.3488% |
20 | Coinstore | LINK-USDT | $11.18 0.0044709 Eth | $2,087,122.00 183,713.080 LINK | 1.0182% |
21 | ProBit Global | LINK-USDT | $11.16 0.0044638 Eth | $1,971,301.00 176,564.611 LINK | 0.9785% |
22 | HashKey Global | LINK-USDT | $11.17 0.0044760 Eth | $1,912,666.00 168,841.827 LINK | 0.9357% |
23 | LBank | LINK-USDT | $11.19 0.0044753 Eth | $1,817,358.00 162,338.480 LINK | 0.8997% |
24 | AscendEX (BitMax) | LINK-USDT | $11.15 0.0044571 Eth | $1,696,016.00 152,116.000 LINK | 0.8430% |
25 | Trubit | LINK-USDT | $11.20 0.0044782 Eth | $1,602,257.00 140,659.010 LINK | 0.7795% |
26 | KuCoin | LINK-USDT | $11.16 0.0044630 Eth | $1,600,020.00 143,311.764 LINK | 0.7942% |
27 | BYDFi | LINK-USDT | $11.18 0.0044705 Eth | $1,499,449.00 134,176.760 LINK | 0.7436% |
28 | WhiteBIT | LINK-BTC | $11.18 0.0044704 Eth | $1,205,816.00 107,852.100 LINK | 0.5977% |
29 | Dex-Trade | LINK-USDT | $11.18 0.0044825 Eth | $1,040,613.00 93,036.790 LINK | 0.5156% |
30 | Azbit | LINK-ETH | $11.19 0.0044762 Eth | $718,586.00 63,825.792 LINK | 0.3537% |
31 | Bitvavo | LINK-EUR | $11.24 0.0044959 Eth | $694,385.00 61,783.478 LINK | 0.3424% |
32 | EXMO | LINK-USDT | $11.17 0.0044663 Eth | $621,577.00 55,642.239 LINK | 0.3084% |
33 | LATOKEN | LINK-USDT | $11.17 0.0044671 Eth | $599,824.00 53,676.384 LINK | 0.2975% |
34 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.18 0.0044680 Eth | $535,745.00 47,485.822 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2632% |
35 | PointPay | LINK-USDT | $11.17 0.0044646 Eth | $526,408.00 46,276.884 LINK | 0.2565% |
36 | BigONE | LINK-USDT | $11.18 0.0044738 Eth | $524,598.00 46,925.890 LINK | 0.2601% |
37 | CoinEx | LINK-USDT | $11.19 0.0044720 Eth | $520,595.00 45,829.289 LINK | 0.2540% |
38 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.17 0.0044671 Eth | $510,276.00 45,231.735 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2507% |
39 | Bybit | LINK-USDC | $11.20 0.0044765 Eth | $481,936.00 42,438.585 LINK | 0.2352% |
40 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.18 0.0044687 Eth | $415,087.00 36,878.336 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.2044% |
41 | Coinbase Exchange | LINK-USDT | $11.17 0.0044650 Eth | $414,948.00 37,161.269 LINK | 0.2060% |
42 | tanX | LINK-USDC | $11.17 0.0044738 Eth | $397,711.00 35,049.100 LINK | 0.1942% |
43 | WhiteBIT | LINK-EUR | $11.20 0.0044783 Eth | $388,810.00 34,712.180 LINK | 0.1924% |
44 | LATOKEN | LINK-BTC | $11.17 0.0044645 Eth | $340,205.00 30,467.632 LINK | 0.1689% |
45 | Phemex | LINK-USDT | $11.18 0.0044705 Eth | $314,751.00 28,161.820 LINK | 0.1561% |
46 | WhiteBIT | LINK-TRY | $11.24 0.0044928 Eth | $304,465.00 27,096.710 LINK | 0.1502% |
47 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.25 0.0044960 Eth | $276,941.00 24,520.561 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1359% |
48 | ProBit Global | LINK-BTC | $11.17 0.0044646 Eth | $274,218.00 24,556.831 LINK | 0.1361% |
49 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.19 0.0044732 Eth | $214,418.00 18,964.458 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1051% |
50 | Gemini | LINK-USD | $11.19 0.0044736 Eth | $210,708.00 18,828.310 LINK | 0.1043% |
51 | BitMart | LINK-BTC | $11.17 0.0044662 Eth | $195,811.00 17,526.580 LINK | 0.0971% |
52 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $11.18 0.0044701 Eth | $180,496.00 15,855.722 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0879% |
53 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.23 0.0044872 Eth | $172,487.00 15,195.583 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0842% |
54 | OKX | LINK-USDC | $11.17 0.0044664 Eth | $166,214.00 14,589.989 LINK | 0.0809% |
55 | Coinbase Exchange | LINK-GBP | $11.19 0.0044762 Eth | $165,614.00 14,793.820 LINK | 0.0820% |
56 | BitDelta | LINK-USDT | $11.18 0.0044686 Eth | $154,866.00 13,659.000 LINK | 0.0757% |
57 | Coinbase Exchange | LINK-EUR | $11.23 0.0044897 Eth | $153,729.00 13,690.100 LINK | 0.0759% |
58 | BYDFi | LINK-USDC | $11.17 0.0044682 Eth | $151,172.00 13,528.710 LINK | 0.0750% |
59 | Bitbank | LINK-JPY | $11.22 0.0044870 Eth | $137,430.00 12,246.782 LINK | 0.0679% |
60 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.17 0.0044658 Eth | $133,453.00 136,034.771 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.7539% |
61 | Binance | LINK-TRY | $11.26 0.0045054 Eth | $104,958.00 9,149.920 LINK | 0.0507% |
62 | Slex | LINK-BTC | $11.18 0.0044729 Eth | $100,600.00 8,903.800 LINK | 0.0493% |
63 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.17 0.0044672 Eth | $82,572.00 83,846.921 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.4647% |
64 | PointPay | LINK-BTC | $11.17 0.0044644 Eth | $66,381.00 5,870.771 LINK | 0.0325% |
65 | Bitkub | LINK-THB | $11.22 0.0044834 Eth | $63,171.00 5,632.482 LINK | 0.0312% |
66 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $11.17 0.0044651 Eth | $62,802.00 5,534.846 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0307% |
67 | Slex | LINK-ETH | $11.18 0.0044686 Eth | $53,461.00 4,740.960 LINK | 0.0263% |
68 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.17 0.0044669 Eth | $50,057.00 4,398.077 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0244% |
69 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $11.16 0.0044619 Eth | $48,156.00 4,291.130 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0238% |
70 | Bitso | LINK-USD | $11.19 0.0044751 Eth | $44,576.00 3,982.899 LINK | 0.0221% |
71 | Binance US | LINK-USDT | $11.16 0.0044630 Eth | $40,303.00 3,609.852 LINK | 0.0200% |
72 | Coinbase Exchange | LINK-BTC | $11.22 0.0044862 Eth | $37,770.00 3,366.340 LINK | 0.0187% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.19 0.0044720 Eth | $37,609.00 3,304.056 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0183% |
74 | KuCoin | LINK-USDC | $11.19 0.0044729 Eth | $36,857.00 3,293.944 LINK | 0.0183% |
75 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.18 0.0044680 Eth | $33,964.00 34,595.910 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1917% |
76 | Bybit | LINK-EUR | $11.27 0.0045059 Eth | $30,074.00 2,564.590 LINK | 0.0142% |
77 | Coinbase Exchange | LINK-ETH | $11.21 0.0044833 Eth | $28,756.00 2,564.660 LINK | 0.0142% |
78 | Solidly V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.19 0.0044719 Eth | $22,924.00 2,030.344 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0113% |
79 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $11.23 0.0044903 Eth | $17,347.30 1,535.391 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0085% |
80 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.17 0.0044651 Eth | $15,330.42 15,547.935 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0862% |
81 | PancakeSwap V3 (BSC) | 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.22 0.0044858 Eth | $15,101.16 8,792.666 0X0E09FABB73BD3ADE0A17ECC321FD13A19E81CE82 | 0.0487% |
82 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.17 0.0044649 Eth | $13,796.57 1,228.387 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0068% |
83 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.19 0.0044718 Eth | $12,134.47 1,076.629 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0060% |
84 | KuCoin | LINK-BTC | $11.19 0.0044713 Eth | $11,271.48 1,007.690 LINK | 0.0056% |
85 | HTX | LINK-BTC | $11.26 0.0045011 Eth | $11,176.87 984.120 LINK | 0.0055% |
86 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.25 0.0044952 Eth | $11,131.14 1,006.754 0X5947BB275C521040051D82396192181B413227A3 | 0.0056% |
87 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD93F7E271CB87C23AAA73EDC008A79646D1F9912 | $11.26 0.0044998 Eth | $11,084.04 977.079 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0054% |
88 | Pangolin | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.13 0.0044498 Eth | $8,824.39 793.287 0X5947BB275C521040051D82396192181B413227A3 | 0.0044% |
89 | KuCoin | LINK-KCS | $11.20 0.0044767 Eth | $7,309.00 652.661 LINK | 0.0036% |
90 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $11.19 0.0044721 Eth | $6,239.10 547.408 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0030% |
91 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $11.17 0.0044651 Eth | $4,459.35 392.248 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0022% |
92 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $11.18 0.0044701 Eth | $3,046.70 404.337 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.0022% |
93 | CoinEx | LINK-USDC | $11.15 0.0044572 Eth | $2,282.99 201.425 LINK | 0.0011% |
94 | CoinEx | LINK-BTC | $11.19 0.0044764 Eth | $2,161.81 191.345 LINK | 0.0011% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $11.21 0.0044844 Eth | $1,663.64 147.696 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0008% |
96 | Uniswap V3 (Arbitrum One) | 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.24 0.0044941 Eth | $1,241.59 258.430 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8 | 0.0014% |
97 | Balancer V2 (Arbitrum) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.26 0.0045013 Eth | $990.16 87.765 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0005% |
98 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFA7F8980B0F1E64A2062791CC3B0871572F1F7F0 | $11.21 0.0044815 Eth | $943.16 86.178 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0005% |
99 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $11.19 0.0044769 Eth | $537.13 47.404 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0003% |
100 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XB33EAAD8D922B1083446DC23F610C2567FB5180F | $11.20 0.0044806 Eth | $151.74 13.824 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0001% |
Contract Name:
LinkToken
Compiler Version
v0.4.16+commit.d7661dd9
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity)Audit Report
/** *Submitted for verification at Etherscan.io on 2017-09-23 */ pragma solidity ^0.4.16; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal constant returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal constant returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) constant returns (uint256); function transfer(address to, uint256 value) returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) constant returns (uint256); function transferFrom(address from, address to, uint256 value) returns (bool); function approve(address spender, uint256 value) returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract ERC677 is ERC20 { function transferAndCall(address to, uint value, bytes data) returns (bool success); event Transfer(address indexed from, address indexed to, uint value, bytes data); } contract ERC677Receiver { function onTokenTransfer(address _sender, uint _value, bytes _data); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) returns (bool) { balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) returns (bool) { var _allowance = allowed[_from][msg.sender]; // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met // require (_value <= _allowance); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = _allowance.sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } /* * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol */ function increaseApproval (address _spender, uint _addedValue) returns (bool success) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval (address _spender, uint _subtractedValue) returns (bool success) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract ERC677Token is ERC677 { /** * @dev transfer token to a contract address with additional data if the recipient is a contact. * @param _to The address to transfer to. * @param _value The amount to be transferred. * @param _data The extra data to be passed to the receiving contract. */ function transferAndCall(address _to, uint _value, bytes _data) public returns (bool success) { super.transfer(_to, _value); Transfer(msg.sender, _to, _value, _data); if (isContract(_to)) { contractFallback(_to, _value, _data); } return true; } // PRIVATE function contractFallback(address _to, uint _value, bytes _data) private { ERC677Receiver receiver = ERC677Receiver(_to); receiver.onTokenTransfer(msg.sender, _value, _data); } function isContract(address _addr) private returns (bool hasCode) { uint length; assembly { length := extcodesize(_addr) } return length > 0; } } contract LinkToken is StandardToken, ERC677Token { uint public constant totalSupply = 10**27; string public constant name = 'ChainLink Token'; uint8 public constant decimals = 18; string public constant symbol = 'LINK'; function LinkToken() public { balances[msg.sender] = totalSupply; } /** * @dev transfer token to a specified address with additional data if the recipient is a contract. * @param _to The address to transfer to. * @param _value The amount to be transferred. * @param _data The extra data to be passed to the receiving contract. */ function transferAndCall(address _to, uint _value, bytes _data) public validRecipient(_to) returns (bool success) { return super.transferAndCall(_to, _value, _data); } /** * @dev transfer token to a specified address. * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint _value) public validRecipient(_to) returns (bool success) { return super.transfer(_to, _value); } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public validRecipient(_spender) returns (bool) { return super.approve(_spender, _value); } /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public validRecipient(_to) returns (bool) { return super.transferFrom(_from, _to, _value); } // MODIFIERS modifier validRecipient(address _recipient) { require(_recipient != address(0) && _recipient != address(this)); _; } }
Contract Security Audit
- Callisto Network - April 14th, 2019 - Security Audit Report
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://c5f438ff94e5ddaf2058efa0019e246c636c37a622e04bb67827c7374acad8d6
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