ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
722,181 ( 0.004%)
Market
Price
$11.76 @ 0.004732 ETH (+2.83%)
Onchain Market Cap
$11,760,000,000.00
Circulating Supply Market Cap
$7,373,903,015.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
1,954.42515211 LINKValue
$22,984.04 ( ~9.2488 Eth) [0.0002%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $11.77 0.0047119 Eth | $28,724,225.00 2,481,684.550 LINK | 16.6003% |
2 | Coinbase Exchange | LINK-USD | $11.74 0.0047142 Eth | $15,546,748.00 1,324,367.290 LINK | 8.8589% |
3 | WhiteBIT | LINK-USDT | $11.72 0.0047068 Eth | $13,881,862.00 1,183,970.240 LINK | 7.9197% |
4 | HTX | LINK-USDT | $11.75 0.0047162 Eth | $12,255,812.00 1,065,775.112 LINK | 7.1291% |
5 | Bitget | LINK-USDT | $11.75 0.0047158 Eth | $9,134,237.00 793,819.450 LINK | 5.3100% |
6 | Bybit | LINK-USDT | $11.74 0.0047157 Eth | $7,369,468.00 638,066.068 LINK | 4.2681% |
7 | Upbit | LINK-KRW | $11.74 0.0047141 Eth | $6,006,012.00 511,435.312 LINK | 3.4211% |
8 | Azbit | LINK-USDT | $11.79 0.0047171 Eth | $5,509,552.00 479,225.930 LINK | 3.2056% |
9 | P2B | LINK-USDT | $11.81 0.0047289 Eth | $5,345,513.00 452,566.010 LINK | 3.0273% |
10 | OKX | LINK-USDT | $11.75 0.0047162 Eth | $4,619,967.00 398,086.481 LINK | 2.6629% |
11 | Slex | LINK-USDT | $11.84 0.0047377 Eth | $4,467,996.00 387,526.710 LINK | 2.5922% |
12 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $11.80 0.0047367 Eth | $4,157,188.00 362,198.194 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 2.4228% |
13 | BTSE | LINK-USDT | $11.75 0.0047163 Eth | $4,069,068.00 346,415.652 LINK | 2.3172% |
14 | DigiFinex | LINK-USDT | $11.75 0.0047171 Eth | $3,789,102.00 322,455.810 LINK | 2.1570% |
15 | Biconomy.com | LINK-USDT | $11.75 0.0047159 Eth | $3,533,678.00 306,232.320 LINK | 2.0484% |
16 | CoinW | LINK-USDT | $11.74 0.0047143 Eth | $3,037,619.00 258,719.970 LINK | 1.7306% |
17 | XT.COM | LINK-USDT | $11.74 0.0047128 Eth | $2,875,321.00 248,223.570 LINK | 1.6604% |
18 | Bitunix | LINK-USDT | $11.74 0.0047079 Eth | $2,537,528.00 216,094.500 LINK | 1.4455% |
19 | Hotcoin | LINK-USDT | $11.72 0.0047069 Eth | $2,515,302.00 214,611.060 LINK | 1.4356% |
20 | KuCoin | LINK-USDT | $11.75 0.0047188 Eth | $2,320,297.00 197,462.331 LINK | 1.3209% |
21 | ProBit Global | LINK-USDT | $11.74 0.0047164 Eth | $2,112,976.00 179,957.218 LINK | 1.2038% |
22 | Coinstore | LINK-USDT | $11.74 0.0047132 Eth | $2,091,915.00 180,699.140 LINK | 1.2087% |
23 | LBank | LINK-USDT | $11.73 0.0047088 Eth | $1,886,653.00 160,844.940 LINK | 1.0759% |
24 | AscendEX (BitMax) | LINK-USDT | $11.75 0.0047157 Eth | $1,768,989.00 150,590.500 LINK | 1.0073% |
25 | Trubit | LINK-USDT | $11.77 0.0047176 Eth | $1,734,218.00 151,064.810 LINK | 1.0105% |
26 | Bithumb | LINK-KRW | $11.73 0.0047100 Eth | $1,443,091.00 123,069.718 LINK | 0.8232% |
27 | BYDFi | LINK-USDT | $11.73 0.0047079 Eth | $1,434,018.00 122,237.180 LINK | 0.8177% |
28 | Bitexen | LINK-TRY | $11.79 0.0047200 Eth | $1,265,412.00 107,330.340 LINK | 0.7179% |
29 | FameEX | LINK-USDT | $11.75 0.0047194 Eth | $1,151,768.00 99,440.965 LINK | 0.6652% |
30 | Bitvavo | LINK-EUR | $11.74 0.0047139 Eth | $973,102.00 82,920.799 LINK | 0.5547% |
31 | Dex-Trade | LINK-USDT | $11.75 0.0047197 Eth | $961,829.00 81,858.014 LINK | 0.5476% |
32 | HashKey Global | LINK-USDT | $11.75 0.0047192 Eth | $948,320.00 83,349.754 LINK | 0.5575% |
33 | Azbit | LINK-ETH | $11.74 0.0047121 Eth | $938,493.00 82,911.300 LINK | 0.5546% |
34 | WhiteBIT | LINK-BTC | $11.74 0.0047151 Eth | $937,701.00 79,863.820 LINK | 0.5342% |
35 | Bitexen | LINK-USDT | $11.76 0.0047206 Eth | $774,851.00 65,894.130 LINK | 0.4408% |
36 | tanX | LINK-USDC | $11.83 0.0047336 Eth | $625,422.00 54,188.010 LINK | 0.3625% |
37 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.70 0.0046953 Eth | $616,272.00 54,195.042 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.3625% |
38 | AscendEX (BitMax) | LINK-BTC | $11.69 0.0046919 Eth | $535,664.00 45,831.700 LINK | 0.3066% |
39 | PointPay | LINK-USDT | $11.73 0.0047109 Eth | $481,176.00 41,564.208 LINK | 0.2780% |
40 | LATOKEN | LINK-USDT | $11.73 0.0047118 Eth | $405,181.00 34,527.605 LINK | 0.2310% |
41 | BigONE | LINK-USDT | $11.81 0.0047227 Eth | $399,397.00 33,831.510 LINK | 0.2263% |
42 | EXMO | LINK-USDT | $11.76 0.0047204 Eth | $389,219.00 33,107.160 LINK | 0.2215% |
43 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.78 0.0047298 Eth | $382,922.00 33,732.323 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2256% |
44 | ProBit Global | LINK-BTC | $11.73 0.0047114 Eth | $371,259.00 31,652.867 LINK | 0.2117% |
45 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.74 0.0047147 Eth | $370,662.00 32,817.785 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2195% |
46 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.72 0.0047045 Eth | $364,469.00 31,789.379 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.2126% |
47 | Coinbase Exchange | LINK-EUR | $11.75 0.0047164 Eth | $339,297.00 28,869.830 LINK | 0.1931% |
48 | Phemex | LINK-USDT | $11.76 0.0047076 Eth | $316,885.00 26,944.080 LINK | 0.1802% |
49 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $11.70 0.0046962 Eth | $302,534.00 26,535.156 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1775% |
50 | CoinEx | LINK-USDT | $11.80 0.0047243 Eth | $300,187.00 26,017.711 LINK | 0.1740% |
51 | Bybit | LINK-USDC | $11.73 0.0047103 Eth | $297,200.00 25,599.842 LINK | 0.1712% |
52 | LATOKEN | LINK-BTC | $11.77 0.0047211 Eth | $297,140.00 25,244.366 LINK | 0.1689% |
53 | Bitbank | LINK-JPY | $11.77 0.0047250 Eth | $254,244.00 21,600.941 LINK | 0.1445% |
54 | Coinbase Exchange | LINK-GBP | $11.76 0.0047215 Eth | $241,376.00 20,526.800 LINK | 0.1373% |
55 | Hotcoin | LINK-BTC | $11.73 0.0047106 Eth | $213,166.00 18,173.670 LINK | 0.1216% |
56 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.81 0.0047425 Eth | $207,937.00 18,087.912 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1210% |
57 | Gemini | LINK-USD | $11.72 0.0047060 Eth | $198,449.00 16,927.964 LINK | 0.1132% |
58 | BitMart | LINK-BTC | $11.75 0.0047170 Eth | $190,071.00 16,179.180 LINK | 0.1082% |
59 | Hotcoin | LINK-ETH | $11.75 0.0047169 Eth | $143,744.00 12,238.640 LINK | 0.0819% |
60 | BitDelta | LINK-USDT | $11.74 0.0047103 Eth | $132,622.00 11,516.000 LINK | 0.0770% |
61 | WhiteBIT | LINK-TRY | $11.73 0.0047097 Eth | $118,387.00 10,094.620 LINK | 0.0675% |
62 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $11.80 0.0047367 Eth | $118,264.00 10,190.429 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0682% |
63 | BYDFi | LINK-USDC | $11.74 0.0047096 Eth | $113,940.00 9,705.470 LINK | 0.0649% |
64 | Coinbase Exchange | LINK-ETH | $11.76 0.0047218 Eth | $111,895.00 9,516.930 LINK | 0.0637% |
65 | Slex | LINK-BTC | $11.74 0.0047154 Eth | $109,323.00 9,399.300 LINK | 0.0629% |
66 | Bitci TR | LINK-TRY | $11.71 0.0047013 Eth | $88,589.00 7,671.280 LINK | 0.0513% |
67 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.74 0.0047125 Eth | $81,100.00 80,080.956 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.5357% |
68 | Slex | LINK-ETH | $11.74 0.0047141 Eth | $74,827.00 6,546.130 LINK | 0.0438% |
69 | PointPay | LINK-BTC | $11.74 0.0047154 Eth | $70,838.00 6,091.302 LINK | 0.0407% |
70 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.78 0.0047299 Eth | $64,536.00 63,321.261 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.4236% |
71 | OKX | LINK-USDC | $11.74 0.0047134 Eth | $53,389.00 4,576.675 LINK | 0.0306% |
72 | Bitso | LINK-USD | $11.80 0.0047250 Eth | $51,319.00 4,350.343 LINK | 0.0291% |
73 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.74 0.0047126 Eth | $40,634.00 3,496.897 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0234% |
74 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $11.72 0.0047028 Eth | $38,000.00 3,329.400 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0223% |
75 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $11.74 0.0047150 Eth | $37,503.00 3,257.972 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0218% |
76 | Bitcointry | LINK-USDT | $11.74 0.0047148 Eth | $29,701.00 2,584.970 LINK | 0.0173% |
77 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $11.71 0.0047034 Eth | $29,455.00 2,538.194 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0170% |
78 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $11.78 0.0047280 Eth | $27,286.00 2,397.109 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0160% |
79 | Binance US | LINK-USDT | $11.75 0.0047163 Eth | $27,125.00 2,309.269 LINK | 0.0154% |
80 | EXMO | LINK-BTC | $11.74 0.0047130 Eth | $26,814.00 2,284.384 LINK | 0.0153% |
81 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $11.82 0.0047474 Eth | $25,019.00 24,463.140 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1636% |
82 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $11.69 0.0046926 Eth | $23,417.00 2,011.260 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0135% |
83 | Nonkyc.io | LINK-BTC | $11.82 0.0047338 Eth | $19,831.47 1,714.847 LINK | 0.0115% |
84 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $11.80 0.0047386 Eth | $18,089.82 27.708 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0002% |
85 | Coinone | LINK-KRW | $11.81 0.0047401 Eth | $14,380.45 1,217.831 LINK | 0.0081% |
86 | KuCoin | LINK-KCS | $11.75 0.0047189 Eth | $13,464.67 1,145.854 LINK | 0.0077% |
87 | PancakeSwap V1 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.83 0.0047500 Eth | $12,763.80 979.089 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0065% |
88 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $11.74 0.0047164 Eth | $9,369.07 62.790 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0004% |
89 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $11.76 0.0047226 Eth | $9,128.06 803.398 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0054% |
90 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $11.74 0.0047136 Eth | $7,695.23 659.108 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0044% |
91 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $11.83 0.0047338 Eth | $7,207.97 627.862 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0042% |
92 | LFJ | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $11.79 0.0047319 Eth | $6,894.80 595.420 0X5947BB275C521040051D82396192181B413227A3 | 0.0040% |
93 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.70 0.0046953 Eth | $6,736.37 6,681.772 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.0447% |
94 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X55D398326F99059FF775485246999027B3197955 | $11.82 0.0047454 Eth | $5,817.78 504.444 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0034% |
95 | CoinEx | LINK-BTC | $11.74 0.0047135 Eth | $5,718.42 492.872 LINK | 0.0033% |
96 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $11.82 0.0047464 Eth | $3,780.43 329.495 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0022% |
97 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $11.75 0.0047167 Eth | $2,450.71 211.598 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0014% |
98 | CoinEx | LINK-USDC | $11.81 0.0047224 Eth | $2,222.81 193.065 LINK | 0.0013% |
99 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X61299774020DA444AF134C82FA83E3810B309991 | $11.78 0.0047316 Eth | $1,890.20 163.278 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0011% |
100 | Uniswap V3 (Arbitrum One) | 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $11.78 0.0047299 Eth | $1,585.90 321.224 0X0C880F6761F1AF8D9AA9C466984B80DAB9A8C9E8 | 0.0021% |
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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