ERC-20
Oracle
Overview
Max Total Supply
1,000,000,000 LINK
Holders
728,410 ( 0.012%)
Market
Price
$21.30 @ 0.006356 ETH (-9.30%)
Onchain Market Cap
$21,300,000,000.00
Circulating Supply Market Cap
$13,445,931,877.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | LINK-USDT | $21.34 0.0063722 Eth | $103,470,758.00 4,689,288.950 LINK | 20.3972% |
2 | Coinbase Exchange | LINK-USD | $21.31 0.0063644 Eth | $43,095,555.00 2,022,695.730 LINK | 8.7982% |
3 | Bybit | LINK-USDT | $21.30 0.0063598 Eth | $31,001,998.00 1,414,541.954 LINK | 6.1529% |
4 | WhiteBIT | LINK-USDT | $21.30 0.0063633 Eth | $29,203,026.00 1,370,743.440 LINK | 5.9624% |
5 | Slex | LINK-USDT | $21.29 0.0063612 Eth | $21,759,915.00 986,908.460 LINK | 4.2928% |
6 | MEXC | LINK-USDT | $21.32 0.0063664 Eth | $21,422,450.00 1,004,941.630 LINK | 4.3712% |
7 | OKX | LINK-USDT | $21.34 0.0063731 Eth | $20,728,643.00 937,758.371 LINK | 4.0790% |
8 | P2B | LINK-USDT | $21.32 0.0063664 Eth | $20,719,807.00 971,980.200 LINK | 4.2279% |
9 | CoinW | LINK-USDT | $21.28 0.0063638 Eth | $18,292,773.00 859,765.150 LINK | 3.7398% |
10 | DigiFinex | LINK-USDT | $21.32 0.0063669 Eth | $13,421,994.00 629,564.310 LINK | 2.7384% |
11 | HTX | LINK-USDT | $21.32 0.0063659 Eth | $10,509,894.00 477,125.733 LINK | 2.0754% |
12 | FameEX | LINK-USDT | $21.32 0.0063677 Eth | $10,335,085.00 468,367.200 LINK | 2.0373% |
13 | Azbit | LINK-USDT | $21.28 0.0063573 Eth | $10,310,936.00 467,307.415 LINK | 2.0327% |
14 | XT.COM | LINK-USDT | $21.31 0.0063663 Eth | $10,302,136.00 466,841.460 LINK | 2.0306% |
15 | Coinstore | LINK-USDT | $21.31 0.0063648 Eth | $9,325,477.00 423,144.360 LINK | 1.8406% |
16 | Bitunix | LINK-USDT | $21.30 0.0063631 Eth | $8,366,645.00 392,724.830 LINK | 1.7083% |
17 | Biconomy.com | LINK-USDT | $21.30 0.0063630 Eth | $7,050,631.00 319,892.192 LINK | 1.3914% |
18 | BYDFi | LINK-USDT | $21.30 0.0063628 Eth | $6,547,566.00 307,418.230 LINK | 1.3372% |
19 | BTSE | LINK-USDT | $21.30 0.0063628 Eth | $6,225,163.00 292,281.290 LINK | 1.2713% |
20 | Binance | LINK-FDUSD | $21.32 0.0063684 Eth | $5,709,953.00 258,542.290 LINK | 1.1246% |
21 | LATOKEN | LINK-USDT | $21.32 0.0063713 Eth | $4,961,283.00 232,745.960 LINK | 1.0124% |
22 | LBank | LINK-USDT | $21.28 0.0063649 Eth | $4,591,221.00 215,752.800 LINK | 0.9385% |
23 | QMall | LINK-USDT | $21.32 0.0063682 Eth | $4,187,508.00 190,114.696 LINK | 0.8269% |
24 | Hotcoin | LINK-USDT | $21.30 0.0063646 Eth | $4,118,346.00 193,312.460 LINK | 0.8409% |
25 | Binance | LINK-USDC | $21.31 0.0063704 Eth | $4,074,978.00 184,550.950 LINK | 0.8027% |
26 | KuCoin | LINK-USDT | $21.32 0.0063677 Eth | $4,047,223.00 189,820.630 LINK | 0.8257% |
27 | Kraken | LINK-USD | $21.31 0.0063654 Eth | $3,716,457.00 174,370.705 LINK | 0.7585% |
28 | Dex-Trade | LINK-USDT | $21.30 0.0063642 Eth | $3,367,935.00 158,089.903 LINK | 0.6876% |
29 | Bitvavo | LINK-EUR | $21.30 0.0063726 Eth | $3,365,157.00 157,963.729 LINK | 0.6871% |
30 | CoinEx | LINK-USDT | $21.33 0.0063742 Eth | $2,301,142.00 104,735.560 LINK | 0.4556% |
31 | Dcoin | LINK-USDT | $21.31 0.0063676 Eth | $2,160,288.00 101,355.000 LINK | 0.4409% |
32 | Bybit | LINK-USDC | $21.31 0.0063640 Eth | $2,100,847.00 97,687.035 LINK | 0.4249% |
33 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $21.39 0.0063873 Eth | $2,066,570.00 93,193.990 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.4054% |
34 | PointPay | LINK-USDT | $21.30 0.0063633 Eth | $1,608,742.00 73,212.027 LINK | 0.3185% |
35 | Coinbase Exchange | LINK-GBP | $21.32 0.0063687 Eth | $1,578,889.00 74,055.300 LINK | 0.3221% |
36 | EXMO | LINK-USDT | $21.31 0.0063655 Eth | $1,538,268.00 72,179.154 LINK | 0.3140% |
37 | Coinbase Exchange | LINK-ETH | $21.29 0.0063577 Eth | $1,536,633.00 72,190.590 LINK | 0.3140% |
38 | Coinbase Exchange | LINK-EUR | $21.34 0.0063732 Eth | $1,341,849.00 62,892.260 LINK | 0.2736% |
39 | Phemex | LINK-USDT | $21.33 0.0063795 Eth | $1,232,191.00 57,754.760 LINK | 0.2512% |
40 | WhiteBIT | LINK-BTC | $21.29 0.0063663 Eth | $1,172,839.00 55,092.630 LINK | 0.2396% |
41 | Kraken | LINK-USDT | $21.32 0.0063687 Eth | $1,146,555.00 53,766.620 LINK | 0.2339% |
42 | Coinbase Exchange | LINK-USDT | $21.23 0.0063403 Eth | $1,046,761.00 49,309.827 LINK | 0.2145% |
43 | tanX | LINK-USDC | $21.34 0.0063778 Eth | $1,027,723.00 46,777.760 LINK | 0.2035% |
44 | EarnBIT | LINK-USDT | $21.32 0.0063697 Eth | $962,239.00 43,528.948 LINK | 0.1893% |
45 | WhiteBIT | LINK-TRY | $21.45 0.0064060 Eth | $948,771.00 44,235.450 LINK | 0.1924% |
46 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.33 0.0063697 Eth | $844,693.00 38,107.558 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1658% |
47 | Camelot V3 | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $21.21 0.0063354 Eth | $770,896.00 34,548.815 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.1503% |
48 | Gemini | LINK-USD | $21.33 0.0063701 Eth | $741,905.00 34,781.911 LINK | 0.1513% |
49 | Bitbank | LINK-JPY | $21.41 0.0063951 Eth | $739,653.00 34,542.236 LINK | 0.1502% |
50 | Binance | LINK-TRY | $21.44 0.0064029 Eth | $723,804.00 32,695.120 LINK | 0.1422% |
51 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $21.36 0.0063799 Eth | $678,853.00 52,496.830 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.2283% |
52 | BigONE | LINK-USDT | $21.28 0.0063557 Eth | $628,705.00 29,544.600 LINK | 0.1285% |
53 | itBit | LINK-USD | $21.34 0.0063753 Eth | $546,834.00 25,624.853 LINK | 0.1115% |
54 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $21.33 0.0063693 Eth | $545,707.00 24,787.031 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.1078% |
55 | Binance | LINK-EUR | $21.31 0.0063739 Eth | $536,280.00 24,027.070 LINK | 0.1045% |
56 | PancakeSwap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $21.23 0.0063404 Eth | $530,169.00 23,609.574 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.1027% |
57 | GMO Japan | LINK-JPY | $21.37 0.0063832 Eth | $495,504.00 23,185.000 LINK | 0.1008% |
58 | HashKey Exchange | LINK-USD | $21.29 0.0063691 Eth | $407,942.00 17,991.447 LINK | 0.0783% |
59 | WhiteBIT | LINK-EUR | $21.30 0.0063710 Eth | $406,021.00 19,060.880 LINK | 0.0829% |
60 | Quickswap (v3) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.34 0.0063729 Eth | $385,504.00 17,213.608 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0749% |
61 | Slex | LINK-ETH | $21.31 0.0063658 Eth | $384,048.00 17,439.490 LINK | 0.0759% |
62 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $21.34 0.0063736 Eth | $376,968.00 402,484.009 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.7507% |
63 | BitMart | LINK-BTC | $21.29 0.0063605 Eth | $361,251.00 16,964.140 LINK | 0.0738% |
64 | QMall | LINK-USDC | $21.32 0.0063729 Eth | $344,512.00 15,624.861 LINK | 0.0680% |
65 | OKX | LINK-USDC | $21.32 0.0063675 Eth | $298,116.00 13,659.809 LINK | 0.0594% |
66 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $21.39 0.0063872 Eth | $289,984.00 12,970.377 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0564% |
67 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | $21.33 0.0063697 Eth | $286,270.00 300,237.611 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 1.3060% |
68 | Coinbase Exchange | LINK-BTC | $21.32 0.0063691 Eth | $234,724.00 11,010.130 LINK | 0.0479% |
69 | Bitci TR | LINK-TRY | $21.34 0.0063759 Eth | $227,440.00 10,257.250 LINK | 0.0446% |
70 | BitStorage | LINK-ETH | $21.30 0.0063648 Eth | $203,621.00 9,557.460 LINK | 0.0416% |
71 | LATOKEN | LINK-BTC | $21.31 0.0063640 Eth | $203,327.00 9,542.421 LINK | 0.0415% |
72 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $21.29 0.0063586 Eth | $155,711.00 7,041.939 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0306% |
73 | Bitso | LINK-USD | $21.16 0.0063226 Eth | $154,065.00 7,279.723 LINK | 0.0317% |
74 | DeGate | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $21.31 0.0063645 Eth | $152,110.00 6,829.265 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0297% |
75 | BitMart | LINK-ETH | $21.30 0.0063612 Eth | $150,745.00 7,078.020 LINK | 0.0308% |
76 | PointPay | LINK-BTC | $21.31 0.0063647 Eth | $145,728.00 6,669.008 LINK | 0.0290% |
77 | Hotcoin | LINK-BTC | $21.30 0.0063645 Eth | $139,506.00 6,548.420 LINK | 0.0285% |
78 | Bitkub | LINK-THB | $21.41 0.0064070 Eth | $139,291.00 6,506.238 LINK | 0.0283% |
79 | Kraken | LINK-GBP | $21.36 0.0063787 Eth | $125,034.00 5,854.160 LINK | 0.0255% |
80 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $21.36 0.0063799 Eth | $116,016.00 5,172.381 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0225% |
81 | Uniswap V3 (Optimism) | 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6-0X4200000000000000000000000000000000000006 | $21.44 0.0064030 Eth | $106,513.00 4,833.505 0X350A791BFC2C21F9ED5D10980DAD2E2638FFA7F6 | 0.0210% |
82 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $21.23 0.0063399 Eth | $101,373.00 4,598.964 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0200% |
83 | KuCoin | LINK-USDC | $21.32 0.0063674 Eth | $94,184.00 4,417.537 LINK | 0.0192% |
84 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $21.33 0.0063697 Eth | $83,071.00 3,725.208 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0162% |
85 | Binance US | LINK-USDT | $21.29 0.0063596 Eth | $77,240.00 3,627.465 LINK | 0.0158% |
86 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $21.39 0.0063873 Eth | $72,401.00 76,165.093 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.3313% |
87 | KuCoin | LINK-BTC | $21.33 0.0063696 Eth | $56,788.00 2,662.620 LINK | 0.0116% |
88 | PancakeSwap (v2) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $21.21 0.0063345 Eth | $55,054.00 2,466.106 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0107% |
89 | Uniswap V3 (Arbitrum One) | 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4-0X2F2A2543B76A4166549F7AAB2E75BEF0AEFC5B0F | $21.38 0.0063860 Eth | $54,775.00 2,480.193 0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | 0.0108% |
90 | Hotcoin | LINK-ETH | $21.29 0.0063598 Eth | $48,694.00 2,287.350 LINK | 0.0099% |
91 | Uniswap V3 (Ethereum) | 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984-0X514910771AF9CA656AF840DFF83E8264ECF986CA | $21.35 0.0063775 Eth | $37,118.00 2,845.711 0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | 0.0124% |
92 | Uniswap V3 (Ethereum) | 0X514910771AF9CA656AF840DFF83E8264ECF986CA-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $21.36 0.0063799 Eth | $31,116.00 1,398.895 0X514910771AF9CA656AF840DFF83E8264ECF986CA | 0.0061% |
93 | Gemini | LINK-BTC | $21.23 0.0063415 Eth | $30,627.00 1,442.312 LINK | 0.0063% |
94 | Uniswap V3 (Avalanche) | 0X5947BB275C521040051D82396192181B413227A3-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $21.19 0.0063301 Eth | $30,327.00 1,382.344 0X5947BB275C521040051D82396192181B413227A3 | 0.0060% |
95 | Uniswap V3 (BSC) | 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $21.27 0.0063536 Eth | $26,543.00 1,207.538 0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | 0.0053% |
96 | THENA FUSION | 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827-0XF8A0BF9CF54BB92F17374D9E9A321E6A111A51BD | $21.35 0.0063784 Eth | $23,983.00 32.956 0X52F24A5E03AEE338DA5FD9DF68D2B6FAE1178827 | 0.0001% |
97 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $21.31 0.0063654 Eth | $23,459.00 1,052.184 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0046% |
98 | zondacrypto | LINK-USDC | $21.37 0.0063882 Eth | $18,501.46 865.759 LINK | 0.0038% |
99 | Bitexen | LINK-TRY | $21.20 0.0063452 Eth | $15,826.47 746.499 LINK | 0.0032% |
100 | Ace | LINK-USDT | $21.30 0.0063606 Eth | $4,048.61 183.580 LINK | 0.0008% |
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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