区块链没有任何用处吗,区块链没有任何用处的原因

1. What is blockchain and what is its use? Will it become a new trend?

Three questions about blockchain (economic hot spots)

Recently , the news about Bitcoin is very eye-catching, and the blockchain has also become popular. In the capital market, the stock prices of various blockchain concept stocks rise and fall like a thrilling roller coaster. It can be seen from the responsive capital market that blockchain is on the forefront and has received great attention from all parties.

"Blockchain technology is essentially a database technology, specifically a ledger technology. The ledger records the asset changes and transactions of one or more accounts. In fact, it is A database with the simplest structure. The running accounts we usually write down in small notebooks and the statements sent by the bank are all typical account books." Wang Jun, chief researcher of Tencent Financial Technology Think Tank, said that security is an aspect of blockchain technology. Its major features are mainly reflected in two aspects: first, the distributed storage architecture, the more nodes, the higher the security of data storage; second, its tamper-proof and decentralized ingenious design, it is difficult for anyone to not follow the rules change the data.

Take online shopping transactions as an example. The traditional model is that the buyer purchases the goods and then transfers the money to the intermediary platform of a third-party payment institution. After the seller ships the goods and the buyer confirms receipt, the buyer will then notify the payment The institution transfers the money to the seller's account. The transaction model supported by blockchain technology is different. Buyers and sellers can trade directly without going through any intermediary platform. After the buyer and seller trade, the system releases the transaction information through broadcast. All hosts that receive the information record the transaction after confirming that the information is correct, which is equivalent to all hosts making data backups for this transaction. Even if there is a problem with a certain machine in the future, it will not affect the data recording, because there are countless machines as backup.

When it comes to blockchain, many people associate it with Bitcoin, and many people even equate blockchain with Bitcoin. He Fei said that Bitcoin is a presentation method of blockchain, but blockchain is not the same as Bitcoin. Blockchain is the underlying technology and infrastructure of Bitcoin, and Bitcoin is a successful application of blockchain, but it does not mean that blockchain can only be applied to Bitcoin.

What is the use of blockchain?

It can solve the pain points and difficulties in many fields such as finance, public welfare, supervision, and anti-counterfeiting, but there are many applicable conditions

Financial services are the first application field of blockchain technology. The use of blockchain technology can solve pain points in many fields such as payment, asset management, and securities.

Take the payment field as an example. The cost of reconciliation, clearing, and settlement between financial institutions, especially cross-border financial institutions, is high and involves many manual processes. The high fees also make it difficult to carry out micropayment business. The application of blockchain technology can help reduce the cost of reconciliation and dispute resolution between financial institutions, and significantly improve the processing efficiency of payment services. In addition, the cost and efficiency advantages that blockchain technology brings to the payment field enable financial institutions to better handleSmall-amount cross-border payments, which were often considered unrealistic due to their high cost, can help achieve financial inclusion.

For example, in order to solve the problem of high reconciliation costs among financial institutions, in August 2016, WeBank and Shanghai Huarui Bank launched the Weilidai inter-institution reconciliation platform, which is also the first in production in China. Banking industry consortium chain application scenarios running in the environment. Zhang Kaixiang, chief architect of WeBank’s blockchain, believes that the high cost problem that the traditional “batch file reconciliation” model has not been able to solve for a long time is where blockchain technology comes in. Subsequently, Luoyang Bank and Changsha Bank also successively connected to the inter-institution reconciliation platform. Through blockchain technology, they optimized the inter-institution reconciliation process in the micro-loan business, achieving quasi-real-time reconciliation, improving operational efficiency, and reducing operating costs. Target. Up to now, the platform has been running stably for more than a year, maintaining zero failures, and the number of real transactions recorded has reached tens of millions.

In the field of public welfare, blockchain technology also has great potential. Ant Financial's first application scenario involving blockchain was public welfare, helping a group of hearing-impaired children obtain a donation, and then using blockchain technology to promote public welfare to be more open and transparent. Hu Danqing, senior product expert at Ant Financial Technology Lab, said: "The blockchain charity platform is like us building a post office on the Internet specifically for mailing funds. Every money donated by users, we will package it into a The package is delivered through the blockchain platform. Every time it passes through a node, we will stamp a postmark and finally deliver it to the recipient. This ensures that every money donated by users is transparent, traceable, and difficult to tamper with. ”

Blockchain technology can play a big role in combating counterfeit goods. Hu Danqing introduced that Ant Financial uses blockchain technology to trace the origin of authentic products. At present, there are some overseas shopping products from Australia and New Zealand, such as milk powder. You can use Alipay to scan the products to know whether they are genuine. "Unlike the previous self-entered product information by merchants, blockchain allows multiple 'bookkeepers' to complete accounting fairly, independently, and non-repudiation."

For financial supervision, blockchain Technology can also play a role. The "Financial Blockchain Underlying Platform FISCO BCOS White Paper" released by the Financial Blockchain Cooperation Alliance (Shenzhen) in 2017 believes that blockchain provides financial regulatory agencies with consistent and easy-to-audit data. Data analysis can supervise financial businesses faster and more accurately than traditional audit processes. For example, in an anti-money laundering scenario, the balance and transaction records of each account are traceable, and no aspect of any transaction will be out of sight of supervision, which will greatly enhance anti-money laundering efforts.

Some people in the industry believe that blockchain 1.0 is mainly aimed at digital currency; blockchain 2.0 is aimed at smart contracts and can be applied in the financial market; blockchain 3.0 will be applicable to more scenarios, and even Create a "blockchain era".

He Fei believes that blockchain can indeed solve the pain points and difficulties in many fields, but blockchain is not a panacea and has many applicable conditions.

For example, the decentralized nature of blockchain technology is suitable for scenarios involving multi-party participation. If it is only unilateral or bilateral participation, it will be of little value. Since each node needs to be checked, blockchain technology is not suitable for high-frequency trading activities.

For another example, blockchain emphasizes openness and transparency and is not suitable for scenarios with particularly high data privacy requirements.

Will blockchain become a new trend?

The technology is not yet mature, so we must be wary of concept hype, and we must distinguish between technological innovation and fund-raising innovation. We cannot use blockchain for the sake of blockchain

The concept of blockchain is so Will Fire become another “Internet+” in the future?

In recent years, the development ecosystem of blockchain has gradually been improved and enriched. Industry insiders believe that with national policy support, widespread attention and financial support, blockchain technology can achieve gradual and stable progress. Although the upside prospects of blockchain technology are broad, we must remain calm about this.

“Although blockchain is currently very popular, we still believe that it is still in a very early stage.” Hu Danqing said that there is currently false enthusiasm in the blockchain concept, and it is not the technology that solves the problem. The real problem is that the focus is on raising funds to make money and hyping valuations. In particular, most of the so-called ICOs (Initial Coin Offerings) that are so popular are innovations in fundraising tools and have nothing to do with technological innovation.

Blockchain technology can indeed create great value, but some risks cannot be ignored.

“Blockchain technology is not yet mature, and its application scenarios are relatively limited. We should be more wary of the concept of capital market speculation.” He Fei said that behind the blockchain craze, there will inevitably be some gimmicks and speculation. Companies that do not really carry out business, but just try to make a profit in the capital market and leave. We must be careful to prevent the occurrence of "bad money driving out good money", causing institutions that really want to do business to withdraw from the market, affecting the development of blockchain technology. application.

Hu Danqing suggested that for the current blockchain craze, regulatory authorities should intervene more proactively, distinguish between technological innovation and fund-raising innovation, and encourage government organizations, credible experts, and industry participants to jointly help the public Identify and comprehensively curb fund-raising innovation in the name of blockchain, so that the actual controller of ICO must bear responsibility for the fund-raising behavior. "The basis for judging whether it is technological innovation or fund-raising innovation is actually very clear, that is, whether it starts with trust and whether it creates actual value by solving the trust problem."

Better promotion and use of blockchain technology in the future , it is necessary to continue to improve infrastructure and strengthen the formulation of relevant laws and policies.

Wang Jun believes that there is still room for optimization and improvement in core blockchain technologies such as consensus algorithms; on the other hand, the processing efficiency of blockchain is still difficult to reach that of some high-frequency application environments in reality. Require. At present, the mainstream blockchain technology platforms all originated from abroad. Domestic blockchain technology service providers must patiently start from the bottom development, achieve independent and controllable technology, and strive to lead the development of global blockchain technology. Enterprises with blockchain application scenarios must actively embrace new things and at the same time scientifically evaluateChain needs, blockchain cannot be used for the sake of blockchain.

He Fei believes that the government can introduce relevant policies to guide companies that are interested in participating in the research and development and application of blockchain technology, and at the same time clarify some suitable application scenarios of blockchain and areas encouraged by the state.

The "China Blockchain Technology and Application Development White Paper 2016" recommends that government departments at all levels learn from the advanced practices of developed countries and regions, combine the development of my country's blockchain technology and applications, and promptly introduce blockchain Technology and industrial development support policies focus on supporting key technology research, major demonstration projects, "mass entrepreneurship and innovation" platform construction, system solution research and development, and public service platform construction. At the same time, it is recommended that key domestic enterprises, scientific research, universities and user units strengthen cooperation to speed up research on core key technologies such as consensus mechanisms, programmable contracts, distributed storage, and digital signatures.

If it can bring money to the enterprise, it will become a hot topic.

2. What does blockchain mean and what are its main uses

In recent years, a hot word has appeared frequently on the Internet, and that is "blockchain". This word gives It gives people a very noble and powerful feeling, but many people don’t know what blockchain means? And what are the main uses of blockchain? Let’s take a look at the relevant content that has been issued.

Blockchain Blockchain is actually equivalent to a disintermediated database, which is composed of a string of rubber data blocks. Each of its data blocks contains information about a Bitcoin network transaction, which is used to verify the validity of the information and generate the next block. In other words, blockchain is essentially a decentralized database.

In a narrow sense, blockchain is a chain data structure that combines data blocks in chronological order and is cryptographically guaranteed. Distributed ledger that cannot be tampered with or forged. Broadly speaking, blockchain is actually a distributed infrastructure and computing method that is used to ensure the security of data transmission and access.

In addition, the blockchain is composed of six infrastructures: data layer, network layer, consensus layer, incentive layer, contract layer and application layer. Regarding its role, blockchain is mainly used to solve the trust and security issues of transactions. The above is the relevant content about the meaning and function of blockchain. I hope it can help friends in need.

3. What is the role of blockchain?

The concept of blockchain can be said to be particularly popular and trendy now. As long as you attach this concept, you can attract money. That blockchain What does it do?

Building a Digital Identity

Just like our guide, how does the blockchain selling skill work? The discussion is like this. The signature component of the blockchain technology is completed using the key. Combining the public key and the private key can be referenced based on the strong digital identity of the possession.

How the public key is called Peilu among the crowd identifiable (e.g. electronicemail address), private keys are a way of expressing consent for digital interactions. Cryptography is an important force behind blockchain innovation.

As a system of record

Our guide to what is distributed Ledger? .Blockchain is an innovation in information registration and distribution. It is suitable for recording static data (registry) and dynamic data (transactions), evolving the recording system.

In the registry, data can be passed through three Any combination of methods is stored in the blockchain:

Unencrypted data - can be read by every blockchain participant in the blockchain with full transparency.

Encrypted Data - participants and decryption keys are read. The key can access the data of the blockchain, proving who added the data and when the data was added.

4. What else does the blockchain have besides Bitcoin? Using

virtual currency is not the only way out for blockchain. Here are a few already implemented and relatively common blockchain applications

Finance

Except for special applications like Bitcoin, in traditional finance In the industry, blockchain technology also has various emerging opportunities. Identity authentication, financial transactions, payment and settlement, and supply chain finance all have their application scenarios.

Because of the non-tamperability of blockchain technology, the trust in the financial industry has been further enhanced. Participants in the chain can query each other's information without having to establish connections through a centralized system. This not only improves work efficiency, but also reduces risks.

Games

The traditional online game industry almost always connects all users together through a server-centered star network. The responsibilities of the server include running applications, transmitting data, saving data and other functions. With the continuous increase of users and the continuous iteration of versions, the pressure on the server and the cost of enterprise investment are increasing day by day.

The distributed computing of blockchain allows each client to undertake certain computing and storage tasks, which not only reduces the pressure on the server, but also further improves data security. .

Electronic Contracts

Traditional paper contracts have disadvantages such as difficulty in confirming the signing identity, easy tampering and loss, and difficulty in management. With the development of the Internet, electronic contracts have played an important role in meeting corporate needs to improve efficiency and reduce costs.

The addition of blockchain technology makes electronic contracts more secure and reliable. Taking the Fada Electronic Contract as an example, through the "Fa Chain" alliance that cooperates with Microsoft (China) and Onchain, important digital fingerprint information on the electronic contract such as the signing time, signing subject, and file hash value of the Fada Electronic Contract will be It is broadcast to the respective nodes of all members. Once all information is stored, no party can tamper with it. At the same time, the hash value information of the file is also simultaneously stored in the national authoritative electronic data forensic identification center, which fully meets the requirements for judicial storage of electronic evidence.

VersionCopyright

Although people's awareness of copyright is constantly increasing, with the increasing number of electronic devices and increasingly convenient data transmission, pirated products are still a worry for creators. What worries the original author even more than piracy is the series of disputes caused by the inability to confirm that he is the original author.

The addition of blockchain makes copyright confirmation more convenient. After the author completes the creation, he can register and store the certificate on the blockchain platform. This kind of time-stamped, non-tamperable certification document can give the creator a higher voice.

Logistics

Nowadays, there are many well-known products that are adulterated or replaced with other items during transportation. Traditional anti-counterfeiting signs have frequently shown a sense of powerlessness in today's world where criminals' technologies are becoming more and more comprehensive.

There are now some large companies that have applied blockchain to logistics and supply chains. Through technology that cannot modify data on a single node, the process in each transportation link will be traceable. There are already cross-border logistics companies in China, which have used this technology to achieve step-by-step traceability of overseas goods, international logistics and import declaration traceability, domestic logistics traceability, and even production enterprise traceability. Such an application will undoubtedly gradually increase consumer confidence and build brand authority.

I believe that in the future, this underlying technology will be used in more industries and scenarios.

5. What is blockchain and what is the use of blockchain?

It is difficult for newcomers to understand the too orthodox answer. Brother Shu specializes in explaining blockchain to newcomers, so he Here is a version that novices can understand.

Blockchain is the second stage of the Internet, so it can basically be divided into Internet technologies.

The biggest feature of the traditional Internet is that it eliminates the boundaries of information and can copy data into countless copies at low cost and transmit it to any node. However, it has the following shortcomings:

Area The blockchain has solved the above problems relatively well.

Through the above we can see,

What is the use of the blockchain?

Like the Internet, it is an underlying technology, which means that other technologies can be combined with blockchain to do a variety of applications. What you can see now are:

Do you understand?

Shu Ge’s interpretation of blockchain from novice to proficient creator, focusing on novices understanding blockchain

6. How can blockchain technology be applied? What it does

Take buying a house as an example: Buying a house is a complex transaction process, with participants including sellers, buyers, intermediary companies, housing authorities, banks, appraisal companies, tax bureaus, etc. Throughout the transaction process, all participants must record their own ledgers separately. Checking these ledgers is a very time-consuming and laborious task.Verification costs are very high. That's why the entire process of buying a home now takes an average of two months.

In addition to being time-consuming and labor-intensive, since there is very little information that can be verified by a single participant, there is a risk of being "cheated at both ends" by the intermediary company, or "sold for more than one house". However, blockchain provides a solution: integrating all participants' ledgers into a trustworthy and non-tamperable digital ledger, which can be queried by all participants. In this way, every aspect of the home buying process is clearly visible, and everyone can conduct transactions with less time and effort.

Bitcoin is the first application of blockchain technology. Without the operation and management of any centralized organization, Bitcoin has maintained stable operation for many years without any problems. Through this case, everyone saw the potential of blockchain technology.

In order to prevent single points of failure and systemic risks, the current financial industry requires strict supervision and layer-by-layer audits to control risks, which also results in high internal costs. The traditional cross-border settlement method is through intermediaries like SWIFT, so the settlement speed is very slow. However, Bitcoin has been running perfectly for many years without the operation of a centralized institution. It can not only realize settlement and clearing in real time, but also There was not a single accounting error.

According to a report released by Santander, Spain’s largest bank, if all banks around the world use blockchain technology internally around 2020, they will save approximately US$20 billion in costs per year. Such data is enough to illustrate the tremendous changes and breakthroughs that "blockchain" has brought to the traditional financial field.

7. What is blockchain and what role does blockchain play

What is blockchain? What changes will it bring to your future life?

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of related cryptographic methods. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

In the original English version of the Bitcoin white paper, the word blockchain does not actually appear, but chain of blocks is used. In the earliest Chinese translation of the Bitcoin white paper, chain of blocks was translated into blockchain. This is the earliest time when the Chinese word "blockchain" appeared.

The Cyberspace Administration of China issued the "Blockchain Information Service Management Regulations" on January 10, 2019.Effective from the 15th.

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-tamperable. Unforgeable distributed 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, and uses cryptography to ensure data transmission and Access security, a new distributed infrastructure and computing method that uses smart contracts composed of automated script codes to program and operate data.

In fact, to understand it very simply and vividly, we can imagine that everything in life is realized in digital form, including food, clothing, housing, transportation, medical treatment, education, etc., based on the Internet, it can be easily done at home Get it done, no matter where you go to do business or trade, you can completely operate it with your mobile phone. With the continuous development, everything we do can be easily completed online, such as volumetric work, production, planting, etc. Of course, the rise of 5g will bring about the end No one can accurately predict what it is now, but it will definitely bring about earth-shaking changes in life and social form!

Blockchain was born from Satoshi Nakamoto’s Bitcoin. Since 2009, various Bitcoin-like digital currencies have appeared, all based on public blockchains.

The current situation of digital currencies is that a hundred flowers are blooming. Here are some common ones: bitcoin, litecoin, dogecoin, OKcoinetc. In addition to currency applications, there are also various derivative applications, such as NXT, SIA, and BitShares. , MaidSafe, Ripple, Ethereum and many more.

On January 20, 2016, the People’s Bank of China Digital Currency Seminar announced that it had achieved phased results in digital currency research. The meeting affirmed the value of digital currency in reducing the issuance of traditional currency and stated that the central bank is exploring the issuance of digital currency.

Some areas where blockchain can be used can be:

▪ Smart contracts

▪ Securities trading

▪ E-commerce

▪ Internet of Things

▪ Social communication

▪ File storage

▪ Proof of existence

▪ Identity Verification

▪ Equity Crowdfunding

The development of blockchain can be compared to the development of the Internet itself. In the future, something called finance-internet will be formed on the Internet, and this thing is based on blockchain. Its precursor is Bitcoin, which is traditional finance. Starting from the private chain and industry chain (local area network), the bitcoin series starts from the public chain (wide area network), both expressing the same concept - digital assets (Digital Asset), and finally converge to an intermediate balance point.

The core advantages of the blockchain architecture include:

Any node can create a transaction, and after a period of confirmation, it can reasonably confirm whether the transaction is Effectively, blockchain can effectively prevent problems from happening on both sides. The cost of trying to rewrite or modify transaction records is very high. Blockchain implements two types of records: transactions and blocks. Transactions are the actual data stored on the blockchain, while blocks are records confirming when and in what order certain transactions became part of the blockchain database. Transactions are created by participants using the system in the normal course (in the case of cryptocurrencies, a transaction is created by Bob sending tokens to Alice), while blocks are created by what we call Units of miners are responsible for creation.

So in conclusion, this is undoubtedly a new technology that changes life. In the future, the production activities of the entire society will be carried out with blockchain as the underlying logic, and many things will be within our reach. , coupled with the integration of artificial intelligence and big data, we can easily handle things that seem to be cumbersome now, such as some securities market transactions and intelligent matching of financial management activities.

To put it simply, blockchain is a network computing center that integrates people, property, machines, and goods, and packages it into a whole; putting it on an infrastructure and running it in a network computing center .

Now the author’s imagination is not big enough to imagine what the future world will be like. I am looking forward to it!

I know a thing or two about this issue. Let’s get to know this mysterious thing - blockchain.

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each The data block contains information about a batch of Bitcoin network transactions, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block

YueIt's a craze, the more you try to keep the truth from the false. First of all, we must first figure out what the real blockchain technology is.

As an example, take buying fruits online.

The process of purchasing fruits online is as follows:

Using blockchain technology and decentralization, the process of purchasing fruits is as follows:

Summary:

1. We found that the original transaction process is: buyers and sellers make transactions, and all key processes are dealing with the payment platform. The advantage of this is that if there is a problem in any link, both sellers and buyers can seek help through the platform and let the platform arbitrate. However, a major bug or hacker attack occurs on the platform, resulting in the loss of all transfer records within a period of time. How to deal with the loss is a troublesome matter.

2. The transaction process using blockchain technology is: everyone’s ledger has exactly the same transaction record. Even if Alipay’s ledger server is broken, the seller’s ledger still exists, and the buyer’s ledger still exists. Still exists. Once this transaction occurs, the traces will never be erased.

This is the core of the blockchain, which is the four words "accounting + accounting".

The development and maturity of blockchain technology cannot be separated from the foundation and foreshadowing of the above new generation of Internet technology. Blockchain is not only a technology, but also provides a service model and solution. , which has played an extremely important role in promoting the further development of the Internet industry.

1. Blockchain + Finance

2. Blockchain + Supply Chain Management

3. Blockchain + Intelligent Manufacturing
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4. Blockchain + Public Services

5. Blockchain + Education and Employment

6. Blockchain + Culture and Entertainment

7. Blockchain + payment

8. Blockchain + invoice {Already enabled in Shenzhen}

Traceability and non-tamperability of blockchain , perfectly combined with the inherent nature and needs of the financial industry, which makes the application of blockchain in the field of financial services the most in-depth and relatively mature field so far. Blockchain technology has broad application prospects. The future technological competition will also be a blockchain competition.

It is important to understand blockchain, which is important to see through various pseudo-blockchain scams.

If someone uses a bunch of professional terms to explain blockchain, it will be difficult for you to understand, and they may not really understand it themselves.

Therefore, we first establish a psychological line of defense. Sell ​​you concepts and talk a lotAnyone who doesn't understand the professional terminology may be a liar. Be very careful!

To understand blockchain, you must know what the core appeal of blockchain is. What do you think you are most worried about in today's highly developed Internet world?

Privacy, yes, privacy. How to protect privacy? You may be monitored at any time, and any of your personal information may be stolen at any time. If personal privacy is not absolutely protected, the Internet will become another pyramid of power. Who is standing on top of the pyramid? He is the smartest technical master, a platform provider, and an information regulator. You and I may be the people at the bottom of this pyramid.

The people who originally invented the blockchain had serious concerns about being completely swallowed up by the Internet, and tried to create an absolutely safe encryption technology to lock up personal privacy. This technology completely subverts traditional encryption technology. In fact, rather than locking up privacy, it is better to tear it into pieces and then distribute the pieces to different people for private keeping. Unless everyone agrees to take the pieces and piece together the complete code, the truth cannot be recreated. This is the first mechanism of blockchain, which is decentralization.

But decentralization alone is not enough. It is also necessary to make those who steal password fragments have nowhere to hide, so that every action of the thief can be recorded indelibly and posted everywhere on the Internet. Diffuse and make it public. This is the second mechanism of the blockchain, the non-anonymous mechanism. Do you think, who snoops into privacy is not sneaky?

In summary, the blockchain is to hide privacy in a decentralized manner, record any actions that reproduce this privacy, and make it public. Seeing this, you may want to applaud the blockchain. Don't worry, how can there be such a good thing in the world? Is there any utopia that is absolutely safe? If blockchain can be realized in an absolute sense, will the existence of the government still be meaningful? Yes, blockchain was originally the embodiment of anarchy. Its ultimate meaning is destined to never be realized. Its survival may have to rely on power, and it is destined to become another beautifully packaged lie and a pretense to deceive others. In this sense, the government must also specify a framework for the development of the blockchain, reconstruct the value of the blockchain, and drive out the anti-government and anti-national attempts contained in the blockchain. Some blockchain technologies can be used in concrete applications, but decentralization must not be promoted. In short, we must remain highly vigilant about blockchain. Beauty often hides its sting. Absolutely ideal recipes often turn out to be poison. The person who says he can absolutely protect your privacy and financial security is the real voyeur and vampire.

Perhaps the best way for us to protect privacy is not to have any privacy, to live a completely open life, either to live like a sun or to live like a god of wine.

Viewpoint: 1. The concept of blockchain originated from the technical attributes of Bitcoin (distributed data storage and accounting,Centralization, inability to tamper with transaction records, point-to-point information transmission, sharing mechanism...), but later some people continued to extend and expand the concept to many commercial fields to facilitate capital speculation. 2. Blockchain in reality (blockchain currently on the market Very confusing), most people use hype concepts to make money in the stock market, there are also lack of regulatory loopholes, legal and regulatory issues, etc., and there is even money laundering (the actual operation of blockchain products is one thing, and the capital operation behind it is another) , At present, the computer systems around the world cannot meet the technical requirements of the attribute characteristics of the blockchain (such as distributed data storage and accounting, decentralization...,), and network bandwidth, storage technology and computer computing systems cannot realize transactions. Operational requirements (it is easy to use computer technology to make your network clogged or unable to complete distributed data storage or transactions are interrupted or delayed at any time and other practical application risks. In addition, as far as the current global computer system is concerned, it is easy to crack the bottom layer of the blockchain. Program (this is a fatal flaw in computers around the world, 0 and 1 binary logic. In addition, if the reverse blockchain mode operation algorithm is used, it is very easy to crack the blockchain. This reverse operation mode can also completely tamper with all transaction records. If In the future, real quantum computers will be on the market, and they can directly break through all blockchain computer systems in seconds. Bitcoin mining is a Ponzi scheme. 3. Most of the blockchains currently on the global market are basically capital speculation concepts to make money,< br />
Blockchain has been mentioned for several years. Early last year, I heard a blockchain boss say that 2018 is the best year for the development of blockchain. After this year, foreign Development has lagged behind. What is blockchain? In terms of impact, it is like pig intestines, connected section by section. Blockchain is to connect these blocks together and fix them, using computer and Internet encryption technology , to prevent secrets from being leaked to the outside world. This technology cannot be explained to non-professionals through professional terms, and generally they cannot understand it. It can only be explained with metaphors. Let me give two examples:

1. Four people, A, B, C and D, play mahjong in a mahjong parlor for money. They use chips for each game and settle the bill at once when they break up. A loses 1,500 yuan, B loses 300 yuan, C wins 200 and D wins 1,600. As a result, A It’s only 1,000 yuan, and everyone else has sorted it out, but A still owes D 400 yuan. Only these four people know about this matter, and these four people are in the same block. There is no proof for saying this, and I can’t write this kind of thing. What will happen if A does not repay the IOU in the future? Except for the four people A, B, C and D present, no one else knows about this. If A wants to default on the debt and says that he does not owe money at all, only three people, B, C and D, will know that A has defaulted on the debt, and the others It is difficult to judge whether Person A owes money and refuses to repay it. Therefore, the value of blockchain needs to expand the scope of participation. What if these four people were playing mahjong and a dozen friends were watching? The cost of Person A's default would be high, right? This is a block of real life. What about extending to the Internet? Then there are infinite possibilities and more scenarios.

2. Suppose four people A, B, C and D are in a hotel with 500 people.When doing business in a business group, this group of 500 people is a big block. Once, A asked B for 10,000 yuan of goods, but did not pay B in time. A said at that time that he would pay B within 3 days. Everyone in the group knows this. If A fails to send money to B within 3 days, then the other 498 business partners in the group will know about it. If A defaults on the debt, his reputation in this business circle will be ruined. affected. This is a block.

Later, A wanted to do business with C. C asked A for goods. A said that you should pay a deposit of 5,000 yuan and the goods will be shipped immediately. C paid 5,000 yuan to A, but A was delayed. Not shipping, everyone in the group knows this, this is another block. When the two blocks are connected, everyone doubts A's credibility. How many times have you done this? Will Mr. A continue to play in the future? This is the value of blockchain.

Blockchain may seem complicated, but it is not complicated at all; it may seem simple, but it is actually very difficult to operate. The blocks are too small and meaningless. If a block wants to grow bigger, privacy and business secrets will be involved. For example, it is inconvenient to talk about falling in love in a large group; for example, it is inconvenient to discuss it publicly in the group (block) beforehand when doing big business together. However, there are still occasions when blockchain technology is used, such as poverty alleviation work, disaster relief fund management, etc. It is exposed to the sun and everyone knows it and supervises each other. I’ve given these two examples. Do you understand them at all?

[The most core and easy-to-understand introduction to blockchain]

1. How does blockchain create trust? We use "1", "2", and "3" to summarize the characteristics of the blockchain:

- "1" summarizes the blockchain: a trusted distributed database;
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- "2" core properties: distributed, non-tamperable;

- "3" key mechanisms: cryptography principles, data storage structure, consensus mechanism.

The "distributed" and "non-tamperable" properties ensure the "honesty" and "transparency" of the blockchain, which is the basis for the blockchain to create trust.

2. In terms of industry, it is expected that the financial industry will be dominated by the financial industry in the next 3-5 years, gradually radiating to other real industries, more realistic scenarios will be accelerated, and the industry will develop from "1 to N" to Including entertainment, product traceability, credit reporting, etc.

In the future, in addition to using technologies such as side chains, lightning networks, and cross-chains, blockchain will also need to be deeply integrated with emerging information technologies such as 5G, artificial intelligence, big data, and the Internet of Things to enhance the Technical performance and off-chain data quality and reduce resource waste.

3. Smart contracts may be the most revolutionary application on the blockchain. If smart contracts are widely used on the blockchain, the economic division of labor will be further refined in the Internet era.ization, network nodes around the world will directly connect demand and production, and broader social collaboration will be achieved.

If the above vision is realized, the combination of blockchain technology and industry is expected to usher in an explosive moment "from 1 to N". Its explosion may not be linear but non-linear. Blockchain Only then can the chain be upgraded from a "trust machine" to an important "engine" leading the industry wave.

Decentralization. Prevent cheating. It used to be that one person kept accounts and could make changes. Now there are 50 people. Each person records an entry and everyone has a record in the account book. Can you make changes to all 50? All 50 ledgers are valid unless they are all changed. So it's very useful.

I saw many people answering that ordinary people cannot understand intuitively. Let me explain simply and clearly, blockchain is decentralized. When something happens, everyone writes it down and has their own password, which cannot be tampered with.

Even if a hacker wants to change it, he has to do it one by one, which will tire him out. In fact, it is impossible, at least for now.

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Blockchain originated from Bitcoin and is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of cryptographic methods. The associated data blocks are generated. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information and generate the next block.

Blockchain has potentially huge application value in financial fields such as international exchange, letters of credit, equity registration and stock exchanges. The application of blockchain technology in the financial industry can eliminate the need for third-party intermediaries and achieve direct point-to-point connection, thereby greatly reducing costs and quickly completing transaction payments.

After reading so many expert advices, I am still confused. I only remember that someone used this so-called "blockchain" to do pyramid schemes in the past...