Author: for Immunity
Produced by Netease Technology "State °C" column group (public number: tech_163)
Editor's Note: The original title is "Must read!" Interview with Academician Chen Chun from the Central Lecture Block Chain
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The blockchain of a year of silence has ushered in the opportunity to regroup.
On October 25, 2019, as soon as the content of the blockchain as an important breakthrough for independent innovation of core technologies was announced, it triggered people's infinite imagination of the industry, and the concept of blockchain was rethought and positioned. Looking back at the driving force behind this, I have to mention a computer expert from Zhejiang University – Chen Chun, an academician of the Chinese Academy of Engineering.
On October 31, Academician Chen Chun and Associate Dean of the Zhejiang University Blockchain Research Center, Associate Professor Cai Liang, accepted interviews with Netease and other media.
Explore the blockchain to meet the new era
Academician Chen Chun has been exploring the blockchain for a long time. In 2017, at the global blockchain financial summit held in Hangzhou, Academician Chen Chun mentioned that blockchain technology has entered the stage of the blockchain of the alliance, and that finance is expected to become the industry in which the blockchain first landed. In the same year, the world's first blockchain industrial park also settled in Xixi Valley, Hangzhou. At that time, Chen Chun believed that the blockchain created trust and had broad application prospects.
In 2018, the School of Computer Science and Software College of Zhejiang University set up a course called Blockchain and Digital Currency. This is the first university in China to offer such courses.
In 2019, General Secretary Xi Jinping emphasized the importance of using blockchain as an important breakthrough for independent innovation in core technologies.
In this context, Academician Chen Chun mentioned in a media interview with Netease Technology that as a blockchain worker, he was deeply encouraged by the recent development of the industry and felt great responsibility. At the scene, Academician Chen Chun answered the public's doubts – "What is a blockchain?" He believes that the blockchain is a distributed ledger. The idea of blockchain is a single point of initiation, full-network broadcast, cross-validation, Joint accounting. The blockchain ultimately depends on technical support, which promotes the production relationship and makes everyone work better.
In terms of regulatory technology, tracking and visualization of blockchain nodes; alliance chain penetration supervision technology; public chain active discovery and detection technology; chain architecture and standards are the development trend.
When talking about the regulatory difficulties in the development of blockchain, Academician Chen Chun said that the current blockchain regulations should be filed and real-named, but the technical characteristics of the blockchain are anonymity, which requires technical supervision and financial supervision to catch up. Under such conditions, Achieve large-scale applications. At the same time, the development of blockchain has to embrace supervision, just like driving traffic on the road to manage.
In addition, Academician Chen Chun said that the development of the China Alliance Chain Platform is due to the higher performance of the Alliance Chain itself, and the multi-centeredness, which reflects the Chinese characteristics. In the future, Zhejiang University needs to be stronger and stronger in technology. Support the country's digital economy development.
Professor Chen Chun mainly introduced the contents of technology research, industrial application and supervision services. On the first aspect, in the technical research, Professor Chen Chun believes that it is actively implemented, strives for the initiative of blockchain technology development, and vigorously develops domestically controlled and controllable The blockchain technology platform fully reflects Chinese characteristics, rather than being based entirely on foreign open source platforms. In addition to strengthening blockchain, including alliance chain and public chain core technology research, we must also strive to explore the integration of artificial intelligence, big data and other development.
At present, the Zhejiang University Blockchain Research Center is mainly engaged in technical research in the fields of alliance chain and blockchain supervision, and currently includes:
First, the core technology breakthroughs of the alliance chain, including the high-performance key technologies of the alliance chain, the key technologies of blockchain security and privacy, the key technologies of high availability, and the key technologies that are highly scalable.
Second, the development of data collaboration technology under the chain, the chain refers to the blockchain, and the chain refers to the traditional trusted system. Currently, it is necessary to study large-scale and high-performance peer-to-peer networks, modular security cryptography protocols, and high performance. Programmable computing engine and definable data distribution protocol.
In the second aspect, in industrial application, the industrialization of alliance chain is applied in the financial industry, legal field, medical field, etc. This is the place that distinguishes the foreign blockchain. The foreign blockchain is basically based on financial innovation to drive other industry innovations. In China, it is necessary to speed up the application of blockchain, focusing on the business pain points that blockchain technology can solve and the practicality in different scenarios.
In the third aspect, there is no good supervision in large-scale application on the supervision service, just like there is no traffic police on the road, or no traffic lights. Any good technology or tool needs to be used correctly. Blockchain, as an important underlying infrastructure, places a high priority on security issues. Zhejiang University is actively cooperating with relevant departments to provide technical support for supervision.
From educated youth to academicians, from mathematics to computers
Chen Chun, born in 1955, has many honors. He is a professor at the School of Computer Science and Technology of Zhejiang University, a doctoral tutor, a member of the Academic Evaluation Committee of the State Council Academic Degree Committee, the director of the National Train Intelligent Engineering Technology Research Center, and the National Education Commission's “Cross-Century Excellent Talents Development Program”. "The first batch of selected experts, the first batch of special experts in Zhejiang Province, and the winner of the 2012 National May 1st Labor Medal… In 2015, Chen Chun was elected as an academician of the Chinese Academy of Engineering.
Such a computer expert grew up in a remote fishing port town in Xiangshan, Zhejiang Province. In 1974, he went to the East China Sea Island to set up a queue. When he attended the first Shandong Youth Education Congress in Zhejiang Province as an educated youth representative, he took the train for the first time. Chen Chun wrote in his diary: "After going back, we must work harder, be a new generation of farmers, and strive to come to Hangzhou to meet every year…"
In 1977, Chen Chun, who was determined to be a new generation of peasants, ushered in the opportunity of life – "recovering the college entrance examination." The language is very good. He received extra points for his excellent answer, but he applied for the mathematics department of Xiamen University. The reason is that mathematician Chen Jingrun graduated from this. Unexpectedly, a "Computer Programming Art" changed Chen Chun's life trajectory. When Chen Chun accidentally saw the book in the library, he began a self-study computer course. So he went to Zhejiang University to study for a computer science graduate.
Open Zhiwang, you can search for more than 160 academic papers by Chen Chun since 1990: "Development of Video Segmentation Technology", "Three-dimensional Costume Simulation Based on Improved Spring-Small Point Model", "Apparel CAD Review"… Chen Chun's research has always been at the forefront of the times, from image to video to big data, "computer silk printing and dyeing design color separation processing and plate making automation system", "textile digital printing system", "carpet color mixing digital printing system" And "Image Adaptive Digital Precision Printing System" is an important systematic project completed by Chen Chun in China's light textile industry for 30 years, and the research results are greatly applied to informationization and industrialization. Chen Chun’s research results won one second prize for national technological inventions and two second prizes for national scientific and technological progress.
The following is an interview with the media of Netease and other media interviews with Academician Chen Chun and Professor Cai Liang:
1Q: Blockchain is a new term. I hope that Academician Chen will give a general introduction to the blockchain from the perspective of experts. At the same time, how does the development of blockchain affect Zhejiang and Zhejiang universities?
Chen Chun: Fundamentally, the blockchain is a distributed digital ledger. Its biggest feature is that it is a billing system, and this system is distributed. If you want to generate a consensus and create a system that everyone believes in, you can't put the data into a centralized system.
For example, in a village, Zhang San borrowed a hundred yuan from Li Si. He wanted everyone to know the account and broadcast it through the village's radio station. All the villagers heard the broadcast and received the information. After they verified it peer-to-peer, they recorded the information on their own books. In this way, all the villagers’ accounts have written that “Zhang San borrowed a hundred yuan from Li Si”. All of the processes are a billing system, and the blocks are arranged in chronological order, and the blocks are connected together to form a chain. This is the blockchain we are talking about. It is connected end to end in chronological order and can be traced back, but it cannot be tampered because they are all encrypted. So in summary, the blockchain is a distributed unified accounting system, everyone is fair and transparent.
Here also illustrates the idea of a blockchain: single-point initiation, full-network broadcast, cross-audit, and common accounting. According to the previous example, the single point of initiation is that Zhang San borrowed a hundred dollars from Li Si. The whole network broadcast is that Zhang San put this information on the whole station broadcast of the radio station. The cross-check is that everyone knows this news, To query and check against peers. After confirmation, it is recorded together. These four steps are guaranteed by a series of techniques, including distributed algorithms and so on.
Cai Liang: Artificial intelligence can promote the development of productivity and improve efficiency. The blockchain is better to promote production relations and work better. The blockchain really helps solve the problem of production relations, especially the development of the real economy. Downstream material providers, and equipment providers, safety supervision, logistics, etc. can all be chained, which can shorten the time of bank guarantees. Relatively speaking, blockchain is a more comprehensive technology that is more comprehensive.
Chen Chun: The blockchain discipline is a relatively comprehensive discipline. Although blockchain technology is mainly supported by computer technology, it is necessary for the application of economics, law, mathematics and other interdisciplinary applications. Zhejiang University has already gone. Forefront.
2Q: At present, in terms of blockchain, domestic and foreign technologies are different. From a global perspective, where is China going, what are the current regulatory difficulties?
Chen Chun: Western countries are concentrated on the public chain and are financially innovative. China has an advantage in building the underlying platform based on the alliance chain. However, it is necessary to see that the underlying research in the alliance chain still has an advantage in countries led by the United States. Our strength is to focus on the alliance platform. In the university, it is necessary to increase basic research, make a lot of investment, and manage it well in the application of blockchain technology. Our country has introduced two regulations. The Office of the Internet Information Office currently requires the filing system to implement a filing system and a real-name system, but the blockchain is anonymous. After the technical supervision and financial supervision, many blockchain technologies can be applied.
3Q: How can the blockchain prevent civil servants from being lazy and bring better government services?
Chen Chun: In the field of government affairs, the blockchain helps to build a society with a system of formation. The information in the chain is real-name, traceable and irreplaceable, which will make the social integrity system a step forward. The blockchain can realize data immobility and model movement, which can realize centralized data operation under distributed conditions. Each decentralized scene provides data through nodes. In the scenario where the blockchain needs to assist each other, data can be shared through trust. The convenience of implementing government affairs.
4Q: How to solve the blockchain talent gap?
Cai Liang: At present, the blockchain has not really been applied to a wide range of empowerment, and there are very few real talents. Zhejiang University, in line with the government's construction of a national regulatory system, requires a lot of talents. Before the system is not out, that is, when there is no standard, talent is lacking.
5Q: Can you give examples of application scenarios in the blockchain involving people's livelihood?
Chen Chun: The Chinese government has a new technical system for the breadth and depth of people's livelihood. The so-called breadth and depth, such as the use of blockchain technology, can make the people's livelihood problems have new improvements in breadth and depth. The so-called breadth. For example, dental insurance, there are very few insurance companies to protect their teeth, because the teeth are very troublesome and information cannot be shared. For example, someone took an X-ray film in Shanghai Dental, and then went to the clinic in Hangzhou to check the film. After doing the same two projects, the insurance company did not give insurance, because the information was not shared.
For example, dental implants require a lot of flow from the material of the teeth to the production of the teeth. From a logistics and financial perspective, a dentist treats a patient who can share his or her information with the dentist in the blockchain, and at the same time the dental manufacturer receives the information, so his dentures can be very Quickly completed, no need to go to the clinic to provide advance payment, sign a contract, and so on. Everyone is on the chain and time can be greatly reduced. So with the blockchain, things that could not be done before, can now launch new business, which is the breadth of applications.
There will be depth in the application of the people's livelihood. Chinese banks say it is difficult to make SME loans, not because they don't have money, but because they want to provide asset guarantees or stock guarantees, or other companies give them guarantees. All guarantees, contracts, and coordination take time, and time is efficiency. However, if the SME has an order, it can use the order to mortgage, or the receivable has not been received, etc., the information can be clearly seen in the chain, the bank can judge for itself. Therefore, the accounts receivable has become a digital certificate on the blockchain, and the bank can automatically confirm how many discounts are made, and whether the loans are directly paid, so the efficiency of loan processing for SMEs will increase. Zheshang Bank's “Accounts Receivable Chain Platform” currently uses blockchain technology, which is known to have saved 80% of the audit time and reduced costs by 50%. .
Therefore, the application of the blockchain, as long as it will involve the characteristics of deposit, trust, coordination, and non-tampering, are all possible.
6Q: Today's 5G commercial package is released, what sparks are there in the blockchain and 5G collision?
Chen Chun: 5G solves the communication problem. It is a mobile Internet active Internet. It mainly speeds up the transmission and can erupt new application scenarios. But in any case, 5G is still like the general mobile Internet, although its transmission process is very efficient, but Its transmission network is opaque to ordinary people and general application scenarios. It's a black box, so it takes a lot of technology, such as artificial intelligence or big data, to confirm the true identity and credit rating of the person who communicates with us.
The blockchain is the best tool to solve the above-mentioned trust problem, so the two will complement each other and will burst into a new spark. For blockchains, it can be faster with 5G networks. In terms of technology, blockchain and artificial intelligence, big data, 5G, quantum computing and other fields can be integrated and developed.
Question 7: You have participated in the Ningbo Gang Congress before, can you talk about the advantages and disadvantages of the development of the blockchain in Ningbo? At present, Zhejiang University also has a team in Ningbo. Will it be related to the industry?
Chen Chun: I am from Shipu, Ningbo. Ningbo's manufacturing industry is developing very well, and Zhejiang University and Ningbo also have a lot of cooperation. However, compared with the development of Ningbo manufacturing industry, the development of information industry is lagging behind. One goal of Ningbo Gang is to realize the development of the information economy.
8 Q: From the current stage, where is the most ideal application scenario for the blockchain? What is the biggest change in the future development of industrial technology?
Chen Chun: The development of blockchain technology in foreign countries is driven by financial development. In 2008, Nakamoto wrote a peer-to-peer payment system. The currency problem has two problems, one is the authenticity problem, and the second is the “double flower” problem. In order to prevent multiple payments and get out bitcoin, the data structure is blockchained. The blockchain is originally the relay method of the Western currency. Mining is based on relay. From the financial derivative to other industries, the whole industry will be applied. The core mechanism of the relay is the transfer of coins. The application is characterized by the public chain. The public chain started earlier and has its own open source algorithm, which is more influential than the alliance chain. The alliance chain is multi-centered and has high performance. At the beginning of the blockchain company, all the coins, that is, the air currency, did not have a corresponding value. The People's Bank of China and the six ministries have clearly defined the risk of preventing tokens. Block chain supervision should be embraced, just like when there is a traffic policeman while driving. Zhejiang University should make the technology stronger and better, and support the development of new economic technology in our country.