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请查看相关英文文档
① What does blockchain mean?
The strict definition of blockchain refers to a consensus mechanism designed based on cryptography technology in a peer-to-peer network. A distributed database technology where multiple nodes jointly maintain a continuously growing, chained list ledger constructed of timestamps and ordered record data blocks. This technical solution allows any number of nodes participating in the system to calculate and record all information exchange data in the system over a period of time into a data block (block) through cryptographic algorithms, and generate the fingerprint of the data block for linking ( chain) and check the next data block, all participating nodes in the system jointly determine whether the record is true.
Blockchain is a general term for technical solutions similar to NoSQL (non-relational database). It is not a specific technology and can be implemented through many programming languages and architectures. Blockchain technology. There are also many ways to implement blockchain. Common ones currently include POW (Proof of Work), POS (Proof of Stake), DPOS (Delegate Proof of Stake), etc.
The concept of blockchain was first proposed in the paper "Bitcoin: A Peer-to-Peer Electronic Cash System", written by the self-proclaimed Satoshi Nakamoto ( Satoshi Nakamoto). Therefore, Bitcoin can be regarded as the first application of blockchain in the field of financial payments.
[Popular explanation]No matter how big the system or how small the website, there is usually a database behind it. So who will maintain this database? Under normal circumstances, whoever is responsible for operating the network or system will maintain it. If it is a WeChat database, it must be maintained by Tencent's team, and Taobao's database must be maintained by Alibaba's team. Everyone must think that this approach is natural, but this is not the case with blockchain technology.
If we imagine the database as a ledger: for example, Alipay is a typical ledger, and any change in data is accounting. We can think of database maintenance as a very simple accounting method. The same is true in the world of blockchain. Everyone in the blockchain system has the opportunity to participate in accounting. The system will select within a period of time, maybe within ten seconds, or maybe ten minutes, to select the person with the fastest and best accounting during this period. This person will do the accounting, and he will combine the changes in the database during this period with Changes in the ledger are recorded in a block. We can imagine this block as a page of paper. After confirming that the record is correct, the system will link (chain) the data fingerprint of the past ledger to this paper, and then This piece of paper is sent to everyone else in the entire system. Then it starts over and over again.The system will look for the next person to do good and fast accounting, and everyone else in the system will get a copy of the entire ledger. This means that everyone in this system has exactly the same ledger. This technology is called blockchain technology, also known as distributed ledger technology.
Since everyone (computer) has exactly the same ledger, and everyone (computer) has completely equal rights, the entire system will not be affected by a single person (computer) losing contact or going down. system breakdown. Since there are exactly the same ledgers, it means that all data is open and transparent, and everyone can see the digital changes in each account. Its very interesting feature is that the data in it cannot be tampered with. Because the system will automatically compare, it will consider the account books with the largest number of the same number as the real account books, and the small number of account books with different numbers as others are false account books. In this case, it makes no sense for anyone to tamper with their own ledger, because unless you can tamper with most of the nodes in the entire system. If the entire system has only five or ten nodes, it may be easy to do, but if there are tens of thousands or even hundreds of thousands of nodes, and they are distributed in any corner of the Internet, unless someone can control most of the computers in the world , otherwise it would be unlikely to tamper with such a large blockchain.
[Elements]Based on the definition of blockchain, we believe that it must have the following four elements to be called a public blockchain technology. If it only has the first three elements, we will consider it a private area. Blockchain technology (private chain).
1. Point-to-point peer-to-peer network (peer-to-peer power, physical point-to-point connection)
2. Verifiable data structure (verifiable PKC system, non-tamperable database)
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3. Distributed consensus mechanism (solve the Byzantine generals problem and double payment)
4. Nash equilibrium game design (cooperation is an evolutionarily stable strategy)
Combined with the definition of blockchain, blockchain will realize four main characteristics: decentralized, trustless, and collective maintenance (Collectively maintained), reliable database (Reliable Database). And the four characteristics will lead to two other characteristics: open source (Open Source) and privacy protection (Anonymity). If a system does not possess these characteristics, it will not be considered an application based on blockchain technology.
Decentralized: The entire network has no centralized hardware or management organization. The rights and obligations between any nodes are equal, and the damage or loss of any node will not affect the entire network. operation of the system. Therefore, the blockchain system can also be considered to have excellent robustness.
Trustless): Data exchange between each node participating in the entire system does not require mutual trust. The operating rules of the entire system are open and transparent, and all data content is also public. Therefore, within the rule range and time range specified by the system Within, nodes cannot and cannot deceive other nodes.
Collectively maintain: The data blocks in the system are jointly maintained by all nodes with maintenance functions in the entire system, and these nodes with maintenance functions can be participated by anyone.
Reliable Database: The entire system will be divided into databases so that each participating node can obtain a copy of the complete database. Unless more than 51% of the nodes in the entire system can be controlled at the same time, modifications to the database on a single node are invalid and cannot affect the data content on other nodes. Therefore, the more nodes and stronger computing power participating in the system, the higher the data security in the system.
Open Source: Since the operating rules of the entire system must be open and transparent, for the program, the entire system must be open source.
Privacy protection (Anonymity): Since nodes do not need to trust each other, there is no need to disclose their identities between nodes, and the privacy of each participating node in the system is protected. of.
② Are there any better forums or apps for sharing and learning blockchain technology tutorials
There are not a few people learning blockchain technology now, but blockchain training institutions Not a lot anymore. There are many blockchain communities and blockchain platforms on the Internet, such as Babbitt, Zhiquchain, Golden Finance, and other platforms, which contain information, knowledge and experience, videos, blockchain project cases, etc. in the blockchain industry. Personally, I think You can buy some blockchain books and combine them with some of the above-mentioned blockchain platforms to learn, summarize experience, and practice. After a period of time, you will have a new understanding of blockchain technology.
③ Where can I find python self-study videos?
I will give you a course outline first. If it is something you want to learn, you can ask me for a video
Phase 1: Basics of Python development
Python full-stack development and artificial intelligence Python development basic knowledge learning content includes: Python basic syntax, data types, character encoding, file operations, functions, decorators, iterators, built-in methods, common modules, etc.
Phase 2: Python advanced programming and database development
Python full-stack development and artificial intelligence Python advanced programming and database development knowledge learning content includes: object-oriented development, Socket network programming, threads, processes, queues, IO multi-channel model, Mysql database development, etc.
Phase 3: Front-end development
Python full stackDevelopment and artificial intelligence front-end development knowledge learning content includes: Html, CSS, JavaScript development, Jquery & bootstrap development, front-end framework VUE development, etc.
Phase 4: WEB framework development
Python full-stack development and artificial intelligence WEB framework development learning content includes: Django framework basics, Django framework advanced, BBS+Blog practical project development, caching and queue middleware , Flask framework learning, Tornado framework learning, Restful API, etc.
Phase 5: Crawler Development
Python full-stack development and artificial intelligence crawler development learning content includes: Practical crawler development.
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Python full-stack development and artificial intelligence full-stack project practice learning content includes: enterprise application tool learning, CRM customer relationship management system development, Luffy Academy online education platform Development etc.
Stage 7: Data Analysis
Python full-stack development and artificial intelligence data analysis learning content includes: financial quantitative analysis.
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The artificial intelligence learning content of Python full-stack development and artificial intelligence includes: machine learning, data analysis, image recognition, natural language translation, etc.
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Python full-stack development and artificial intelligence automated operation & development learning content includes: CMDB asset management system development, IT audit + host management system development, distributed host Monitoring system development, etc.
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Python full-stack development and artificial intelligence high-concurrency language GO development learning content includes: GO language basics, data types and file IO operations, functions and object-oriented, and concurrency Programming etc.
④ "Blockchain in China: How will it subvert the future" epub download online to read the full text, please ask for Baidu Netdisk cloud resources
"Blockchain in China: How will it subvert the future" Subverting the Future" (Liu Xingliang) e-book network disk download for free online reading
Link: https://pan..com/s/1fbnWb6qnV2RSqZlj9P8APg Extraction code: mx2d
Book title: District Blockchain in China: How it will subvert the future
Douban score: 6.0
Author: Liu Xingliang
Publisher: China Friendship Publishing Company
< p>Publication year: 2019-3Number of pages: 248
Content introduction:
It has been 10 years since the blockchain was proposed development, but in the eyes of the public, it still seems to be a derivative concept of encrypted digital currency, always tied to the "currency circle". Actually,Blockchain technology is used in many fields and has broad development prospects and space.
On the basis of explaining the background and characteristics of blockchain technology, this book comprehensively introduces the application of blockchain technology in China’s finance, business and life fields in a popular way, and the resulting future impacts and existing problems, and further explore its future cross-border integration trends.
About the author:
Liu Xingliang
Well-known Internet scholar, founder of "Liu Xingliang Time", producer of the pan-tech video program "Bright Three Points", DCCI Internet Research Dean of the Institute, member of the Shanxi Provincial Committee of the Chinese People's Political Consultative Conference, special commentator of CCTV Financial Channel, visiting professor of Southwest Jiaotong University. A participant, witness and researcher of China's Internet development, he is also an online opinion leader with millions of fans.
Published works "Blockchain in China: How it will subvert the future", "Entrepreneurship 3.0 era: Sharing defines the future", "Intelligence Explosion - Opening a new era of Homo sapiens", "Outsmarting the world: the experience of entrepreneurial choices" "The Third Wave: The Future of the Internet and China's Transformation" etc.
Won the China Internet Special Contribution Award, China New Economy Outstanding Contribution Award, New Media Festival Ten Years Special Contribution Figure, Technology Big V Influence Ranking Champion, Weibo Celebrity Award, and Top 100 Most Influential Blogs in China , top ten IT blogs and other honors.
⑤ "Post-Google Era: The Decline of Big Data and the Rise of the Blockchain Economy" pdf download and read online, please ask for Baidu Netdisk cloud resources
"The Post-Google Era: The Decline of Big Data and the Rise of the Blockchain Economy" (George Gilder) e-book network disk download for free online reading
Resource link:
Link:
Extraction code: 56hdBook title: The Post-Google Era: The Decline of Big Data and the Rise of the Blockchain Economy
Author: George Gilder< /p>
Douban score: 6.4
Publisher: Modern Publishing House
Publishing year: 2018-9-5
Number of pages: 304< /p>
Content introduction: The Google era (information Internet era) based on big data and machine intelligence is an awe-inspiring era. But it's coming to an end.
George Gilder, the author of "The Post-Google Era", is a visionary and wise man. He has unparalleled vision and insights in technology and culture. He describes to readers the crisis of trust and security facing Google, and bravely predicts the coming post-Google era.
Google has captivated the world with its amazing “search and sort” capabilities. The powerful search engine and seemingly free small applications, such as videos, maps, email, etc., make many users unable to stop. But a system without price competition will stifle entrepreneurship and eventually turn the Internet into an advertising wasteland.
The lack of trust and security is Google’s fatal weakness, and the currentComputers and network systems cannot solve this crisis. If value and security are not part of the information technology architecture, then the architecture must be replaced.
A liberal economy based on advertising revenue and secure exploitation of citizens’ privacy will give way to a system based on privacy and security. “Cryptozoological systems”—the new architecture of blockchain and its derivatives—are the future of mankind. Blockchain architectures such as Bitcoin, Ethereum, and Block Heap will create a safe and valuable new Internet.
The Internet, which has long been controlled by a few giants, is facing a "big dismantling". This will decentralize the power of computers and commerce, and ultimately reshape the entire economy and the Internet.
About the author: George Gilder is a visionary and wise man with unparalleled vision and insights in the fields of technology and culture. In the 1980s, he was a representative figure of supply-side economics. His book "Wealth and Poverty", which advocates "reducing taxes and increasing fiscal revenue," sold 1 million copies. Known as the "Reagan Reform Bible", it also had a great impact on China.
In the 1990s, he became an advocate of the Internet and the new economy. In "Communication Revolution", he elaborated on the idea of from the "microcosm" of each personal computer to the "remote universe" woven by the interconnection of countless personal computers, which not only gave birth to today's Google, the Internet, Facebook, etc. The large central Internet giant has also completed the overall system construction of Gilder as a futurist.
In his new work "Post-Google Era", he clearly points out that today's centralized Internet will be iterated by the decentralized Internet represented by blockchain. The world of the future will be different from what you imagined.
⑥ Blockchain - What is the blockchain? Jindian Bixin can understand the blockchain
Blockchain - What is the blockchain? Can Jindian Coin News understand the blockchain?Block Pioneer animation video helps you understand what is blockchain, easy to understand
What is blockchain, does Maobei belong to blockchain?Answer: Maobei does not belong to the blockchain, but only uses blockchain technology. The characteristic of the blockchain is that everything that happens will be recorded and cannot be deleted or changed.
Blockchain, what is a blockComprehensive interpretation of blockchain
When talking about blockchain, people always compare it with Bitcoin. On October 31, 2008, a person named "Satoshi Nakamoto" sent an email to a cryptography email group, claiming, "I have been working on a new electronic cash system, which is completely peer-to-peer and does not require Any trusted third party.” He launched a new system using Bitcoin as the transaction currency.
What is blockchain technology? What is blockchain?Blockchain is a distributed shared accounting technology. What it wants to do is to allow all parties involved to establish a trust relationship at the technical level.
Blockchain can be roughly divided into two levels. One is to doThe underlying technology of blockchain; the second is to make upper-layer applications of blockchain, that is, transformation, optimization or innovative applications based on blockchain.
What is the core meaning of blockchain? Our understanding is that the core meaning of blockchain is to establish data credit among participants, and to create a single transaction under clear regulations through unilateral confrontation. The ecology of all aspects jointly guarantees complete opportunities. This is a system. This establishment can end the problems before the blockchain. Before the blockchain, it was impossible to achieve new sharing when data was shared, even if it was targeted. It just gives you an interface. After the blockchain is established, the participants can realize the sharing of credit.
What are the underlying platforms of blockchain?
Answer: There are mainly the following categories:
1. Bitcoin. The earliest blockchain development was based on the Bitcoin blockchain network. Since Bitcoin is the most widely used and truly decentralized in the world, in terms of blockchain applications, Bitcoin is the most widely used blockchain in the world. A strong anchor with the greatest authority.
2. Ethereum. It can be said that apart from Bitcoin, Ethereum is currently the most eye-catching blockchain platform. Ethereum is a Turing-complete blockchain one-stop development platform that uses multiple programming languages to implement protocols. It uses a client written in Go language as the default client (i.e., the method of interacting with the Ethereum network, and supports many other language client).
3. IBM HyperLedger. Also called fabric, its goal is to build a super ledger that is jointly maintained by the whole society. Fabric originated from IBM. Its original intention was to serve industrial production. IBM open sourced 44,000 lines of code, which is a great contribution and allows us to have The opportunity is so close to explore the principles of blockchain that are different from Bitcoin.
4. LISK. It is a new generation of blockchain platform that allows the development of JavaScript (Javascript technology again, engineers, take note) and distribution-based decentralized applications using an easy-to-use, full-featured ecological blockchain system.
5. Online recording blockchain platform. It is the research and development result of the underlying technology of the Wanglu blockchain and a basic platform capable of commercial delivery. In addition to serving the Wanglu public chain, the Wanglu blockchain platform is also the basic platform for Wanglu to create private chains and alliance chains for customers.
What is blockchain? What is blockchain for digital currencies? In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be non-tamperable and non-forgeable. Ledger. Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses automated scripts to code composed of smart contracts to program andA new distributed infrastructure and computing paradigm for operating data.
Nowadays, mainstream digital currencies are basically developed based on blockchain technology. Blockchain is the underlying technology of digital currency. The domestic tea-based digital currency Puyin was developed based on blockchain technology.
The essence of blockchain is a decentralized accounting system, and Bitcoin is the currency that "exists in digital form" carried on this system. Blockchain is a system behind Bitcoin that consists of credit records and the settlement of credit records.
Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system [1].
Blockchain is an important concept of Bitcoin. The "2014-2016 Global Bitcoin Development Research Report" released by Huobi.com, Tsinghua University PBC School of Finance Internet Finance Laboratory and Sina Technology mentioned the area. Blockchain is the underlying technology and infrastructure of Bitcoin [2]. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block< br /> The evolution of blockchain is:
▪ Blockchain 1.0 - digital currency
▪ Blockchain 2.0 - digital assets and smart contracts
▪ Blockchain 3.0— —IFMChain, blockchain officially links mobile terminals
