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1. Which blockchain companies do better in terms of deep integration of industry, academia and research?

At present, there are several domestic blockchain companies that do well. :
1. Lianxiang Technology: It has always been in a leading position in the application of blockchain technology. It is a leading joint innovation enterprise in China and has changed the innovative research and development model of enterprises.
2. Huobi Technology: It is an advanced domestic blockchain infrastructure and application service provider, providing safe and reliable transaction systems and services for the blockchain market.
3. Open Sesame Technology: A company that focuses on blockchain application solutions and provides secure and highly available blockchain solutions for business systems.
4. Light Chain Technology: Committed to providing efficient and friendly blockchain services to ordinary users, focusing on the open application and popularization of public chains, and also providing customized application services for private chains.
5. Blue Lake Technology: A multinational enterprise focusing on blockchain technology and applications. It is committed to promoting the development of global blockchain technology and applications and assisting the transformation and upgrading of traditional industries.

2. Which relevant departments in Shandong have taken action to lay out the blockchain project

Ten years have passed since the blockchain was proposed. In the past ten years, the guidance of various domestic departments has been and support, blockchain has penetrated into various industries. Since 2017, the State Council and the Ministry of Industry and Information Technology have repeatedly proposed to actively promote domestic blockchain research, standardization development and industrial application in related fields. However, blockchain has not yet developed on a large scale in Shandong. Through mainstream search engines such as the Internet and 360, searching for keywords such as "blockchain + Shandong" can reveal some related deployment documents and policies in addition to blockchain. Except for support and a few companies that provide blockchain technology services, there are almost no specific application projects of blockchain. In recent years, relevant departments of the Shandong Provincial Government have also been actively promoting and deploying blockchain project construction.

➨On December 27, 2018, the Shandong Provincial Development and Reform Commission issued a notice on the "Shandong Province Producer Service Industry Development Layout Plan", aiming to accelerate the innovative development of Shandong Province's producer service industry, Sustainable development and leading development. In the layout of the software and information technology service industry, it is emphasized that Jinan, Qingdao, and Yantai are the core nodes, focusing on the development of 12 industrial directions such as artificial intelligence and blockchain. Zhongzhexin Blockchain Co., Ltd. follows the layout planning trend of the Shandong Provincial Development and Reform Commission , actively layout and explore the application of blockchain in the real industry.

➨On October 28, 2018, the "Special Plan for the New Generation Information Technology Industry in Shandong Province (2018)" was issued by the General Office of the People's Government of Shandong Province and implemented by the Department of Industry and Information Technology of Shandong Province and other relevant departments. -2022), the notice emphasized that grasping the new generation of information technologyIn line with the development trend of the technology industry, in cutting-edge fields such as artificial intelligence, quantum technology, virtual reality and blockchain, we insist on advanced layout and innovation leadership, solidly promote disruptive technological innovation, and seize the opportunities and commanding heights of the future development of the industry. In exploring and promoting the development and application of blockchain technology, specific requirements are put forward, requiring accelerating the research and application of key technologies such as blockchain architecture, consensus algorithms, asymmetric encryption, fault-tolerance mechanisms, distributed storage, etc., to form blockchain infrastructure and solutions . Actively promote the in-depth integration of blockchain with big data, cloud computing and other technologies, expand blockchain application scenarios, and strengthen the application of blockchain technology in key industries such as finance, industry, energy, and medical care.

➨On March 13, 2019, the General Office of the Shandong Provincial People's Government issued the "Notice on the Digital Shandong 2019 Action Plan", which requires accelerating the innovative development of the big data industry and further improving the big data industry chain. , forming an industrial ecological system with innovative collaboration, reasonable layout, supporting industries, and scientific order (led by the Shandong Provincial Big Data Bureau and coordinated by all relevant departments). Emphasize the role of data as a basic resource and innovation engine, and promote the deep integration of big data with cloud computing, artificial intelligence, Internet of Things, blockchain, virtual reality and other technologies. Deepen the innovative application of big data in various industries, promote cross-field and cross-industry data integration and collaborative innovation, enhance development potential through cross-border integration, and cultivate new economic growth points.

➨On December 7, 2018, the General Office of the Shandong Provincial Government issued the "Notice on Promoting Supply Chain Innovation and Application" (hereinafter referred to as the "Notice"). The "Notice" points out that it is necessary to promote the innovative development of supply chain in Shandong Province and improve the level of supply chain development. Promote the integration of advanced technologies such as the Internet of Things, big data, and blockchain in the entire supply chain process to create a visual, perceptible, and adjustable smart supply chain. (The Shandong Provincial Department of Industry and Information Technology, Shandong Provincial Department of Science and Technology, Shandong Provincial Department of Commerce, etc. are responsible according to the division of responsibilities).

➨On December 29, 2018, the Shandong Provincial Department of Science and Technology issued the "Notice on the Announcement of the List of Projects for the Major Scientific and Technological Innovation Projects of Shandong Province in 2018 to enter the next round of comprehensive demonstration." Among them, two projects related to blockchain have entered the list, namely "R&D and Industrialization of Blockchain Platform Supporting National Cryptozoology Algorithms" by Pulian Software Co., Ltd. and "Efficient Scalable Zone to Support Supervision" by Qilu University of Technology "Blockchain Basic Support System Research and Development and Application Demonstration in the Clearing Field" project, which shows that blockchain projects have begun to play a role in the development of innovative technology projects.

In addition to various notices and layout plans, relevant provincial departments are also actively implementing the cooperation and construction of blockchain projects. On June 28, 2018, the Shandong Provincial Department of Commerce and SF Express Group signed a strategic Cooperation Agreement. The two parties will use their respective advantages to cooperate in areas such as the construction of modern supply chain systems and promote the integration of blockchain and other technologies with supply chains.

➨On July 26, 2018, Xie Weijun, Director of the Shandong Provincial Department of Justice, stated that blockchain technology should be promoted in related fields, explore the implementation form of "blockchain + judicial administration", and promote "district "Blockchain" technology is applied in judicial administration fields such as community corrections, notarization, and forensic appraisals.

The development of blockchain also requires the supervision and supervision of more departments, including the Office of the Network Security and Informatization Committee of the Shandong Provincial Committee of the Communist Party of China, the Shandong Provincial Communications Administration, and the National Computer Network and Information Security Management Center. The "2018 Shandong Province Network Security Report" jointly released by the Shandong Branch pointed out that the security problems brought about by new technologies such as 5G, IPv6, and blockchain will become increasingly serious. The Shandong Provincial Administration for Market Regulation (Intellectual Property Office) also provides services and supervision in industrial and commercial, intellectual property and other aspects.

Zhongzhexin Blockchain Co., Ltd. actively responded to the call of the Shandong Provincial Government, based in Jinan, relying on entities, and took the lead in creating the country's first tea blockchain project in Shandong, striving to create a new generation of information in the country A new frontier of technological development. Tea Chain World is based on blockchain technology and is a tea blockchain application that integrates artificial intelligence. It uses the characteristics of blockchain decentralization and trustlessness to achieve point-to-point interaction and transactions between the supply end and the consumer end. On the one hand, It solves the problems of enterprise operating costs, inventory, sales channels, etc.; on the other hand, the characteristics of blockchain such as non-tampering and traceability solve product quality problems. Products can be monitored in every link from source, production, processing, distribution to the hands of consumers. .

The tea chain world has introduced tokens, using blockchain token incentives to break the original business model and reshape the production relations of the tea industry. Through the consensus mechanism, each participant in the chain collaborates with each other to jointly create value, and shares corresponding rewards and equity certificates according to the amount of contribution, which greatly mobilizes the enthusiasm and creativity of participants, thereby creating more value and fully stimulating Bring out the economic vitality of individuals and enterprises and promote the economic growth of industries. Taking real enterprises as the starting point and starting from the tea industry, it will drive the development of the real economy. Tea Chain World has realized all possibilities for the innovative development of tea companies, and has played a positive leading role in leading China's tea industry to new heights.

3. Fraud in the name of blockchain, and blockchain has become the "signature" of pyramid schemes.

Recently, fraud in the name of blockchain technology has been on the rise. potential. Some self-media and illegal coin issuance companies in the currency circle have become active again, using social software to promote tokens in an attempt to fish in troubled waters. Investing 100 yuan can earn 1 million. Have you ever seen this kind of profit return? Things that are talked about every night, but because of the lofty concept of "blockchain", they are packaged into "the hen that lays golden eggs", is used by criminals in real life and succeeds frequently.

Blockchain has become the "signature" of MLM fraud

The popularity of blockchain technology has also led to some criminals who use the name of blockchain to commit MLM fraud. The line is back from the ashes. Guo Yuhang, chairman of the China Blockchain Application Research Center, told reporters that when he was conducting research in a province in central China recently, officials from the financial department of the province revealed that more than 40 illegal fund-raising cases under the banner of blockchain have been investigated and dealt with locally. The amount involved in one case was as high as more than 2 billion yuan.

Not long ago, a sports APP that claimed to be “developed based on blockchain technology” was investigated by relevant departments in Changsha City, Hunan Province. This software has been accused of being a "typical pyramid marketing model" and is the result of combining traditional MLM methods with new concepts such as "blockchain" and "big health".

Similar cases have occurred frequently this year. Fraud cases implemented in the name of blockchain have been uncovered in Suzhou, Yancheng and other places in Jiangsu Province. The police in Hengyang City, Hunan Province uncovered a fraud case in May this year. The gang used blockchain as a gimmick to issue worthless "air coins" and raised nearly 350 million yuan worth of Ethereum.

In the exposed cases of pyramid schemes and fund-raising fraud under the guise of blockchain, the characteristics of "pulling people's heads" are very obvious. They often take advantage of the mentality of the public who are not familiar with blockchain but have heard of Bitcoin’s “wealth-making myth”, and put a “fashionable” cloak on their illegal activities, promising low investment, high returns, and higher returns for offline development. Those who do not know the truth It’s easy to be fooled.

Industry experts said that although "Air Coin" may actually use blockchain technology, the purpose of issuance is too ambitious, such as "human health" and "reconstructing business models", and is almost useless. possible. Once investors are trapped and funds accumulate to a considerable amount, the project issuer will have a high probability of running away, and investors will lose their money. The resonance model that is popular in the currency circle in 2019 is a typical example. Typical projects with resonance models such as CXC and VDS have appeared in many places in my country, and many users have not recovered their own costs of funds invested. With the subsequent regulation, it is only a matter of time before these projects are liquidated.

With this phenomenon of bad money driving out good money, we have to look beyond the appearance to see the essence

“There cannot be an equal sign between blockchain and Bitcoin, obviously it is not the same. It is not the same as 'getting rich'." Many industry insiders emphasized to reporters that blockchain is an underlying technology, relying on which a number of digital currencies such as Bitcoin were born, but they cannot be confused together because of this. Discovering the truth requires penetrating the fog. In addition to increasing the popularization of blockchain knowledge so that the public can understand and identify pyramid schemes disguised as "blockchain", more importantly, supervision must also keep pace with the times. Although the supervision of digital currency speculation, spam issuance, and pyramid schemes has never been relaxed in recent years, due to the complexity of the blockchain concept and its legal blankness, traditional supervision hasThe method currently seems to be quite difficult.

Experts pointed out that it is necessary to strengthen the application of regulatory technology. Most MLM projects in the name of blockchain will frequently spread and leave traces on the Internet. With the help of existing financial technology supervision methods, it is possible to detect and investigate in time.

Of course we can’t kill them all with one stick. We also need to learn how to distinguish the pros and cons of blockchain projects

There are good and bad in blockchain, and there are good and bad, so We must also be good at discovering high-quality projects and passing inferior projects. How to spot spam projects?

Significant characteristics of junk projects: For example, CXC, VDS, and the investigated Qubu Bao make money without losing money, attracting people to develop offline. Although many normal cryptocurrencies also need marketing and promotion, they also need publicity. The project has advantages and hopes to be known and used by more people, but publicity is publicity, and we will never promise to make a profit without losing any money, let alone promote it in a way that attracts people's hair to grow offline. But for empty shell MLM coins, the purpose is to make money, so we must paint you a beautiful money-making situation, and then directly or in disguised way, use the method of pulling people's hair to get offline to gather funds.

Of course, we must maintain high-quality projects, because in the early stages of an industry, high-quality projects can easily be inadvertently trampled by users with lower costs and unawareness, so we must maintain high-quality projects. , such as 2019 rookie SBO. Through the Star Leap Plan, SBO has created a stable ecosystem and built a complete closed-loop underlying infrastructure to contribute to the development of the digital economy and help the economy and society. The original SBO ecosystem has begun to be compatible with all DAPPs on the chain and facilitates development. Or transplant DPAA on other chains. At another investment level, SBO opens up the built-in trading function. Although SBO is not completely online now, based on this function, users can invest in SBO in advance, enjoy the blockchain dividends together, and explore future blockchain application models with SBO. There are already many users making money through SBO, so SBO has gathered very strong community forces to protect the development of SBO.

For the sake of users, SBO will also be delayed in listing on the exchange at this stage. With the tightening of national policies, there are many problems in the project's current listing on the exchange. One is the "selling pressure problem", and a large number of users have The market will lead to the collapse of the project, and the other is "exchanges absconding with funds." Many exchanges currently have problems. Under the heavy attack of the state, many exchanges have begun to swallow up user assets and transfer them overseas, so currently SBO cannot Listing on the exchange is a way to save the country. Usually from a long-term perspective, it protects the project value and user benefits.

In the beginning of the industry, keep your original intention

When the business model of blockchain applications is not yet mature, we must keep our eyes open, rationally invest in innovative projects with potential, and reject junk projects , while closely following national policies and jointly supporting the development of blockchain technologyCombined with life application scenarios, we welcome the new era together!

4. What is the concept of blockchain? Read it in three minutes!

On October 25, 2019, Xinwen Broadcast sent a very important signal: the country must vigorously develop blockchain. After that, blockchain has become an Internet celebrity, and the figure of "blockchain" is floating in the streets and alleys. In fact, many technology companies have already deployed blockchain technology.

Although blockchain is very popular, many people do not know much about blockchain.

What is blockchain?

Let’s first take a look at how Du Niang explained it. Network display: Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Why is blockchain called blockchain?

The blockchain is linked by blocks one by one, and the blocks are storage units one by one, which record the communication information of each block node. The blocks are much like the records of the database. Writing data every time creates a block. With the expansion of information exchange, one block continues with another, and the result is called a blockchain.

What are the characteristics of blockchain?

Blockchain mainly has the following characteristics:

1. Decentralization: In the blockchain system, every node has equal rights. and obligations, there is no central control here. Decentralization has well established trust relationships with each other. Although there is no central management organization, people can collaborate with each other and trust each other. This mainly applies blockchain distributed ledger technology.

2. Openness: Blockchain data is open to everyone. Except for some encrypted information that is not open, everyone can check the data here.

3. Independence: The entire blockchain system does not rely on other third parties. All nodes can automatically and securely verify and exchange data within the system without any human intervention.

4. Security: Blockchain has a certain degree of security and cannot be tampered with. Because everyone in the blockchain system has the same ledger, if someone wants to tamper with it, it is possible to forge a non-existent record only if they control more than 51% of the accounting nodes. Of course, this is basically impossible. This is mainly due to the core technology of the blockchain: the consensus mechanism. The consensus mechanism has the characteristics of "the minority obeys the majority" and "everyone is equal".

5. Anonymity: Many people think that if the blockchain is so open and transparent, will we lose privacy? Actually not. Although the transaction information in the blockchain is open and transparent, the identity information of the account is not entered.If the information is encrypted, it can only be accessed if authorized.

Now let me tell you a story to help you better understand the blockchain.

There are three people in the family, mom, dad, older brother and younger brother. Last year, my father was in charge of the family's account books. He was responsible for all the family's income and expenses alone.

However, on the day of Double Eleven, my mother, who has always been frugal, wanted to buy herself a beautiful piece of clothing on a certain online store. When she checked the account book, she found something was wrong. It stands to reason that except for some money deposited in banks and financial management, the whereabouts of the daily consumption money at home are all in this account book, but no matter how you look at it, it is wrong. Some consumption is clearly not recorded, but is recorded.

Later, my father took the initiative to confess that he couldn’t help but buy a pack of cigarettes.

Later, my mother changed her strategy and the whole family kept accounts. Everyone recorded their monthly consumption expenditure in their own account books. Whenever there was a transaction or consumption at home, my mother would shout, "Book it," and everyone would record the transaction in their own books. This is the decentralized accounting model, where everyone is the center and everyone has a ledger.

The previous accounting model for dad was centralized accounting. If dad wanted to do something alone, it would be difficult for anyone to see it. The decentralized accounting model has solved the problem of centralization very well. The disadvantage of bookkeeping is that it is very difficult for dad to tamper with the books.

For example, if dad wants to take some money from the ledger and secretly buy cigarettes, the amount of money is limited, and if he wants to take the money, he has to change the ledger, but he only tampered with his own ledger. No, he had to change the accounts of three people including himself. And this is undoubtedly more difficult than reaching the sky.

So, many times my father had the idea of ​​smoking, but he had no choice but to give up the idea due to the current situation.

Are blockchain and Bitcoin the same thing?

In fact, blockchain and Bitcoin are not the same thing. It is just the underlying technology of Bitcoin. Bitcoin is the first digital currency applied by blockchain.

In 2008, Satoshi Nakamoto first proposed the concept of blockchain. In the following years, it became a core component of the electronic currency Bitcoin, serving as a public account book for all transactions. Blockchain was first applied to Bitcoin.

The origin of blockchain is to solve the problem of trust, and one of the most successful applications of blockchain is digital currency. Bitcoin is arguably the most successful application of blockchain so far.

What are the applications of blockchain?

The application of blockchain is actually very wide. In addition to digital currency, the future applications of Bitcoin are still very extensive. Blockchain technology has been used in different industries.a wide range of applications. Such as product traceability, copyright protection and transactions, payment and settlement, Internet of Things, digital marketing, medical care, etc., promoting different industries to quickly enter the "blockchain+" era.

1. Payment and clearing: Blockchain can abandon the role of transit banks, realize point-to-point payment, reduce transit fees, and accelerate fund utilization.

2. Product traceability: For example, if we buy a piece of clothing on a certain store, we can see the past and present life of this piece of clothing.

3. Securities trading: Traditional securities trading requires the coordination of four major institutions, which is inefficient and costly. Blockchain technology can independently complete one-stop services.

4. Supply chain: Introducing blockchain technology into the supply chain system, synchronizing information within the system can control all links, better complete division of labor and collaboration, and facilitate subsequent accountability.

5. Intellectual property rights: With copyright on the chain, our photographic works, musical works, literary works, etc. will become our information, and the ownership of the information will be confirmed and become our property.

5. What are the blockchain companies?

——The following data sources and analysis are from the "Business Model Innovation and Investment Opportunities in China's Blockchain Industry" published by the Qianzhan Industry Research Institute In-depth analysis report".

——Original title: Analysis of the market status and development trends of China’s blockchain industry in 2019. Widespread implementation of applications to accelerate the construction of digital China

Analysis of the industrial chain of the blockchain industry: There are many downstream application fields with huge development potential

From the perspective of the industrial chain, my country's blockchain industry includes upstream hardware, technology and infrastructure; midstream blockchain applications and technical services;

Downstream blockchain application fields and other links. Upstream hardware, technology and infrastructure mainly provide necessary hardware, technology and infrastructure support for blockchain applications. Among them, hardware equipment includes mining machines, mining pools, chip manufacturers, etc.; general technologies include distributed storage, decentralization transaction, data services, distributed computing and other related technologies.

Downstream application fields include the combination of applying blockchain technology with existing industries, mainly including the financial industry, logistics industry, copyright protection, medical health, industrial energy and many other fields. As an emerging technology, blockchain There are many downstream application fields and huge development potential.

Midstream blockchain applications and services include basic platform construction and the provision of technical service support. The basic platform construction is divided into general basic chains and vertical domain basic chains; technical service support includes technical support and service support. Support is similar to upstream related technologies, and is responsible for providing buyers with a series of technical support based on blockchain products such as blockchain security protection; service support includes a series of services such as digital asset trading venues, digital asset storage, and media communities.

Blockchain industry industry chain analysis

Source: Compiled by Qianzhan Industry Research Institute

6. What companies are currently using blockchain technology?

Large-scale domestic blockchain companies include Xinchen Technology, Yinjiang Co., Ltd., Great Wall of China, Radio and Television Express, Hundsun Electronics, etc.

1. Xinchen Technology

The company's current main business is application software development business, software and hardware system integration business and professional technical service business. In recent years, Xinchen Technology has been more bold in its attempts at innovation. The company has made certain progress in the application of new technologies such as cloud computing, big data, artificial intelligence, and blockchain in the financial industry. The domestic letter of credit business system based on blockchain technology has been successfully launched in banks and is expected to gradually become a new growth point for the company's software solutions business.

2. Yinjiang Co., Ltd.

The company mainly provides intelligent system engineering and services to users in transportation, medical, construction and other industries. "Elite" has conducted multiple follow-up reports on Yinjiang Shares. This company has made in-depth development in smart cities in recent years, covering all aspects of urban residents' lives including transportation, medical care, construction, environment, energy, education, and finance.

The company is a key software enterprise within the national planning layout, a key high-tech enterprise in the National Torch Plan, one of the top 100 enterprises in China's software business revenue, one of the top 100 high-tech enterprises in Zhejiang Province, and one of the top 100 high-tech enterprises in China according to Forbes in 2010. One of the top 100 small and medium-sized enterprises with potential, a unit with outstanding contributions to China's informatization construction in the past 30 years of reform and opening up, and one of the companies with the highest comprehensive business qualifications and the most comprehensive types in the domestic industry.

3. Cultural Great Wall

Cultural Great Wall began to acquire large educational institutions such as Lianxun Education, Zhiyou Zhenlong, and Jade Sect World Education in 2015, and has become a leader in the A-share education industry. For listed companies, the rapid growth of the education industry has become a new driving force for the company's performance growth. Its subsidiaries began to lay out the blockchain industry in 2017, investing in the research and development of blockchain-related technologies, and obtained four blockchain technology copyrights in March 2018, becoming a pioneer in blockchain applications in the field of education. .

4. Radio and Television Express

The company stated on the investor interaction platform that it has been paying attention to the development trend of digital currency for a long time. Focusing on the industry development needs of digital currency, the company has set up a dedicated team to carry out Related work, including research on blockchain technology.

5. Hundsun Electronics

On June 1, 2016, the Financial Blockchain Cooperation Alliance was established in Shenzhen. Hundsun Electronics is one of the 25 initiators to use the blockchain Chain technology implements a digital ticket system based on the alliance chain.

7. Which companies are relatively mature in developing blockchain technology?

Shandong Bianke Information Technology Co., Ltd. is a software development company with excellent technology.

[Blockchain Exchange]

Blockchain technology application research and development, exchange wallet system app development Blockchain technology is actually a new type of Internet. Why is it said to be a subversion of the Internet? Because the Internet solves the problem of trustInformation transmission, and blockchain solves the value transmission. Yuanzhongrui Blockchain System Development Blockchain has many value transfers, such as distributed ledgers, decentralized trust, smart contracts, etc. So what kind of society will it build in the future?

The answer is: a distributed business and self-disciplined society. The first characteristic of blockchain is decentralization; no third-party intervention is required to realize person-to-person, point-to-point transactions and interactions.

Second, the information cannot be tampered with; once the data information is written into the block, it cannot be changed or revoked.

Third, openness and transparency; within a very short period of time, the block information will be copied to all blocks in the network to achieve data synchronization across the entire network, and each node can trace back all past transactions of both parties. information.

Fourth, collective maintenance; in the entire blockchain network, all roles jointly maintain the reliability and security of the entire blockchain information.

Fifth, reliable database; only by mastering 51% of the nodes in the entire system can the blockchain information be tampered with. This is obviously impossible because there are many participants in the entire system and so many nodes are mastered. The cost is extremely high and it is impossible to achieve.

The characteristics of blockchain bring great opportunities to the financial industry. Using it to transform internal application scenarios in the industry can bring three main benefits:

< P>1) Reduce costs: Communication costs: Centralized trading markets generally require the participation and coordination of multiple parties such as central settlement systems, securities companies, exchanges, and banks. The coordination costs are very high. Through the signature encryption next to the blockchain source, etc. Technology allows information to be shared and reduces coordination costs; operating costs: reducing labor and paper vouchers, improving automation through smart contracts, and centralized coordination also bring very high operating costs.

2) Improve efficiency: The settlement cycle is very fast. When the financial transactions realized through blockchain technology are confirmed, it is actually a settlement process that combines clearing, settlement and auditing. The openness, transparency and non-tamperability of the blockchain can save traces of operations, allow supervision records and audit traces to be retained, and facilitate supervision and auditing.

3) Reduce risk: The transaction confirmation on the chain completes the clearing and calculation, greatly reducing the transaction risk. Blockchain technology application research and development, exchange wallet system app development