Arm bitcoin

1. You think too much, mining to see the graphics card computing power, a single show how much power consumption, how much power can you use when your mobile phone CPU is fully open
don't say that the bitcoin mine is almost empty now. Even if you have to dig, how long does your mobile phone have to dig?

2.

Get qtum node

you can get qtum node program through one of the following four methods:

1. Download binary files directly

if you don't care about the source code of qtum, the most convenient way to deploy qtum node is to download the latest binary files from qtum release page (click to open). Currently supported platforms include Linux, windows and OSX. It is recommended to download the latest version. This tutorial takes the latest version of v0.14.13 as an example

(note that the version number of the latest version you see may be different, such as 0.14.13, other strings remain unchanged)

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for Mac users, please download: qtum-0.14.13-osx64.tar.gz

for Linux users, please download: qtum-0.14.13-i686-pc-linux-gnu.tar.gz (32-bit) or qtum-0.14.13-x86_ 64-linux-gnu.tar.gz (64 bit)

for Windows users, please download: qtum-0.14.13-win32.zip (32 bit) or qtum-0.14.13-win64.zip (64 bit)

for raspberry pie users, please download: qtum-0.14.13-arm-linux-gnueabihf.tar.gz

after the compressed package is decompressed, & lt; Decompression path & gt/ Bin / contains qtumd and qtum cli, which are the qtum node executable files to be used in this tutorial

3. There are many applications in the Alipay block chain. For example, the original Dangshan and Wuchang rice in Anhui originally had many fake goods, but since the Alipay chain chain landed the origin of the origin, the whole process was more transparent and monitored. For example, closer to life, everyone love Tmall shopping mall. Tmall started menace from the rear of consumers, which is to relieve consumers' worries. It is the use of Alipay block chain, which is not tampered with, non repudiated, and easy to trace back.

4. It's hard to dig now. Is your mobile phone supercomputing. It's not that Tianhe No.2 has been g up very well

5. Where did you download it? Give me a link. It's Android. I'll try it

6.

BTM (Bytom) is an interaction protocol of diverse assets and multi node assets. Different forms of heterogeneous bit assets and atomic assets running on the original blockchain can be registered, exchanged, bet, and more complex interaction based on contract through this protocol

BTM is the original token of Bi Yuan chain, with a total of 2.1 billion. The distribution share of private placement is 7%, the share of ICO is 30%, and 20% is reserved compared with the original coin project foundation. This part is frozen within one year after the end of ICO, and then thawed in four years, with an annual thaw rate of 5%. In addition, it reserved 10% of the original currency's business expansion share, and the remaining 33% of the original currency's mining share

extended materials:

Project BTM (than the original chain) focuses on the asset chain, and is applied to the asset management of earning rights, the equity management of non listed companies, and the asset management of securitization. BTM is compatible with the design of bitcoin utxo, supports the national security standard, adopts the artificial intelligence ASIC chip friendly POW algorithm, and uses the side chain to support cross chain asset transactions and dividends, thus enhancing the flexibility of transactions

7. Wanacry: wannacry, a 3.3mb "worm like" blackmail software, is spread by criminals using the dangerous vulnerability "eternal blue" leaked by NSA (National Security Agency)
the malware will scan the TCP 445 port (server message block / SMB) on the computer, spread in a worm like way, attack the host and encrypt the files stored on the host, and then ask for ransom in the form of bitcoin. The amount of extortion ranged from $300 to $600
on May 14, 2017, a variant of wannacry blackmail virus appeared: wannacry 2.0, which cancelled the kill switch and spread faster. As of May 15, 2017, wannacry has caused cyber attacks in at least 150 countries, which has affected the financial, energy, medical and other instries, causing serious crisis management problems. Some windows operating system users in China are infected. Campus network users bear the brunt of the infection. A large number of laboratory data and graation projects are locked and encrypted
at present, the security instry has not been able to effectively break the malicious encryption behavior of the blackmail software. Brad Smith, President and chief legal officer of Microsoft, said that the U.S. national security agency did not disclose more security vulnerabilities, which gave criminal organizations an opportunity to take advantage of, and eventually brought the blackmail virus that attacked 150 countries this time< Prevention methods of wannacry blackmail virus:
1. Install the latest security patch for the computer. Microsoft has released the patch ms17-010 to fix the system vulnerability of "eternal blue" attack. Please install this security patch as soon as possible; For Windows XP, 2003 and other machines that Microsoft no longer provides security updates, we can use 360 "NSA Arsenal immunity tool" to detect whether there are vulnerabilities in the system, and close the ports affected by the vulnerabilities, so as to avoid being infringed by blackmail software and other viruses
2. Close ports 445, 135, 137, 138 and 139, and close network sharing
3. Strengthen the awareness of network security: don't click the unknown link, don't download the unknown file, don't open the unknown email...
4. Back up the important files in your computer to the mobile hard disk and U disk as soon as possible (regularly in the future), and save the disk offline after the backup
5. It is recommended that users who are still using Windows XP and windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.

8. 1、 Python virtual machine is not as strong as Java. Java virtual machine is the core of Java. The core of Python is that it is easy to use C language functions or C + + libraries< Second, Python is fully dynamic and can modify its own code at runtime. Java can only be implemented through flexible methods. Python variables are dynamic, while Java variables are static and need to be declared in advance, so the code prompt function of Java IDE is better than that of Python ide
Third, python has been proced for decades, and process oriented design was the mainstream decades ago, so many programs in Python use process oriented design methods, many concepts come from C language, class is added later in Python, and Java is used to realize c + + without pointer (reference counting used by com components in those years, virtual machine used by Java), It mainly adopts object-oriented design method, and many concepts are OOP concepts. Process oriented, relatively simple and intuitive, but easy to design noodle program, object-oriented, relatively abstract and elegant, but easy to over abstract
Fourth, it's easy to get started in the actual use of python, but to learn how to work with Python, you need to learn all kinds of Python libraries. The strength of pyhton lies in the library. The reason why the library of Python is powerful is that the library of Python can be designed with Python, C language, C + +, and then provided to python, so no matter how GPU runs, neural network, intelligent algorithm, data analysis, image processing, Scientific computing, all kinds of libraries are waiting for you. Java does not have as many open source libraries as python, many of which are used internally by commercial companies, or released as a jar package without the original code. Because the compiler of Python virtual machine is not as good as that of Java (or designed intentionally), it usually directly uses the source code (Linux), or simply packs the source code (such as pyexe)< 5. There are many virtual machine implementations in Python, such as python, python, pypy, Jython, ironpython, etc., which are suitable for business language, plug-in language, or domain oriented language, while Java is rarely used for plug-in language because of its huge size, and it is not convenient to publish< 6. Java is mainly used in the fields with strong business logic, such as mall system, ERP, OA, finance, insurance and other traditional database transaction fields. Through transaction codes similar to SSH framework, Java has better support for business databases, such as Oracle, DB2, SQL server, etc., and has strong software engineering concept, which is suitable for multi person development mode of software engineering. Python is mainly used for web data analysis, scientific computing, financial analysis, signal analysis, image algorithm, mathematical calculation, statistical analysis, algorithm modeling, server operation and maintenance, automatic operation, rapid development, strong concept, suitable for rapid development team or indivial agile mode< 7. There are many commercial companies supporting Java, such as SAP, Oracle, IBM, etc. there are commercial containers, middleware, enterprise framework and EJB. Many open source organizations support python, such as QT, Linux, Google, and many open source programs support python, such as pyqt, redis, spark, etc< 8. Python is most used for scripting, Java is most used for web, Python is glue, which can glue all kinds of irrelevant things together, Java is fag, which can form hundreds of personal teams and PK with you through software engineering, with strong commercial flavor. However, I think Python is still powerful, because it can easily call C or C + + libraries, but software engineering and commercial operation are not as good as Java, so it is suitable for rapid development< Nine, about money. If you want to write programs and sell software with Java, you can use IBM server, Oracle database, and EMC storage. The price is high. Commercial purchasing companies like this kind of high-end software. If you want to generate money directly with the program, you can use Python to realize kuanke finance, data back testing, stock speculation, option speculation, gold speculation, bitcoin speculation, hedge arbitrage, statistical arbitrage. There are many open source libraries, data analysis libraries and machine learning libraries for reference< 10. Java and python can run on Linux operating system, but many Linux can support Python natively, and Java needs to be installed by itself. The reason why Java and python are better than C # is that they support Linux, OSX, UNIX and arm. The reason why Java and python are more popular than C + + is that they don't need pointers< For mobile Internet, python can only run on Android or IOS through runtime. Java supports Android development, but not IOS< 12. For big data, it is more convenient to use java to open Hadoop, Scala to develop spark, and python to call spark for further analysis

hope to adopt. If you want to learn software testing, you can poke me

9. As the most widely used programming language in the world, Java is always used to compare with Python. Moreover, Python and Java are also the most popular among all kinds of programming languages
1. Java must explicitly declare variable names, while python of dynamic type does not need to declare variables
2. Python is a powerful language with simple syntax, which can provide excellent solutions by writing scripts, and can be quickly deployed in various fields
3. Java can create cross platform applications, while Python is compatible with almost all current operating systems< For beginners, Python is easier to learn than Java, and the code is easy to read
5. Speed, Java and python are not suitable for high-performance computing, but in terms of performance, Java is slightly better than python. The efficiency advantage of Java is reflected in the virtual machine execution. When the program is executed, the JVM can convert the bytecode into local machine code. This kind of just in time (JIT) compilation makes Java slightly better than python, but Python adjusts the performance to improve the efficiency of Python
java and python are both dynamic programming languages, which are associated with openness, so it is better for companies, teams and programmers to keep an open attitude when making decisions. As for which programming language programmers should choose, we can compare them by combining the above five points, but more programmers seem to prefer python. After all, python has better prospects in the fields of artificial intelligence, data analysis, cloud computing and so on!