In the process of sorting out the photos, Xiaolian found that the salon in Hangzhou not only had a good communication atmosphere, but also the girl's appearance is quite high~~ Let's review it together!

At 12:00, coordinate Hangzhou Shiliupu Coffee, after setting up the site, waiting for the developers to arrive.

Here is a frontal photo of the empty main venue.

The kt version displayed on the left side of the main stage introduces the world's top performance and one-stop support policy of ThunderChain.

At 13:00, the developers who came together began to sign in one after another!

At 13:50, the seats in the main venue were already full, and there were many developers sitting on the steps and on the second floor. I felt the enthusiasm of the developers in Hangzhou~ There were also a lot of ladies and sisters here, did you find out~

At 14:00, the salon officially started, and the host (CSDN: Xu Weilong) made an opening introduction.

Mr. Ji Jiangmin, associate professor of computer science at Zhejiang University and secretary-general of Hangzhou Blockchain Technology and Operation Federation, made an opening speech, hoping that blockchain technology enthusiasts and developers will work together to promote the development of blockchain technology and applications.

At 14:05, Zhang Huiyong, head of research and development of the ThunderChain open platform, shared the decryption of the ThunderChain isomorphic multi-chain framework.

Sit in rows and listen carefully to the developers and guests who shared.

In the question and exchange session, it is not easy to catch the technical masters of ThunderChain, and the developers are very enthusiastic to ask questions.

Question: From the official website of ThunderChain, we can see that there is a concept of raising gas fees. Is it possible to guess that it is a chain derived from the Ethereum?

Hui Yong: ThunderChain and Ethereum are completely different, software architecture and consensus algorithm, etc., but they both use the same account model.

Q: If there is a dependency between accounts, how does ThunderChain solve it? For example, a simple transfer, A to B, B to C.

Hui Yong: The description we have seen is like this. In fact, it is still processed directly from A to C, and there is no real intermediate state.

Question: This involves changes in business attributes. If you go directly from A to C, user A does not know user C.

Hui Yong: The ThunderChain is a one-time transfer of state directly from the execution contract. It can be found in the record that after this change, there is no need to do the status twice during processing.

At 14:35, Guo Jialou, the research and development engineer of the Thunderchain file system, shared the Thunderchain file system and redundant coding.

In the question and exchange session, the little brother was full of curiosity~~

Below are some excerpts from the exchange.

Question: I am more interested in file storage, or how to increase revenue. When proving the file, I only transfer a specific block each time. Will it fool the checking nodes?

Jialou: This mechanism is to assign values ​​randomly, not fixed, and cannot be cheated.

Question: Each user has a storage, and the users on the chain pull down the nodes and store them locally. How to ensure that the uploaded data must have a sliced ​​node that is definitely available?

Huiyong: That’s how it is. After we cut the data into 18 pieces and the redundant code is 36 pieces, we will select 36 machines to deploy. There are 36 machines with data, and as long as 18 machines are online, the code can be guaranteed to be decoded. Come out, if you get 19 pieces, you can add two more 9s. It is not that after the data is divided equally, if we lack any piece, the data will be lost. We only need to have 18 pieces of data. As long as we find any 18 pieces, we can decode the code. In that example, four pieces are compiled. , the original data is three blocks, any three of these four blocks can be solved. This means that if there are four machines, as long as three machines are online, the solution can be solved.

After the short coffee break, at 15:15, Mr. Chen Jianhai, head of the blockchain of the Intelligent Computing & System Laboratory of the School of Computer Science, Zhejiang University, shared his vision of the trusted value Internet "Blockchain +" era.

Captured a sister paper who is studying hard! Tilt your head and kill!

At 15:45, Yin Xiaoliang, senior product manager of the ThunderChain open platform, shared the application direction of the blockchain and the technology selection strategy.

Knowledge points should be carefully photographed and recorded.

In the developer question exchange session, a part of the exchange content is excerpted below.

Question: Teacher, I would like to ask, in fact, our smart contracts are all based on trust, which is not familiar to the public. What do you think about consumer education?

Yin Xiaoliang: Educating users is the biggest problem facing the blockchain industry. This can also explain why we want to create a small plug-in for the Thunder Chain, and try new technology development in a way that everyone is familiar with or has accepted. A small plug-in is a developer-friendly Applications. ThunderChain has launched voting and lottery smart contract templates, and more plug-ins will be improved in the future.

Question: Hello, I am asking a non-technical question. We all know that Xunlei Chain has done quite well in China. From the perspective of product design or business model, the development of the business model under the Xunlei Chain, or What kind of strategy will be adopted in the profit model?

Yin Xiaoliang: At present, ThunderChain is completely used as a set of underlying operating platforms, so we will focus more on how to let our partners or developers implement their applications. ThunderChain is to provide developers with underlying technical services and support, lower the threshold, and also provide enterprises with consulting and services for business on-chain.

At 16:15, Lin Jing, the co-founder of HGBC, made a case analysis: sharing the opportunities and challenges of genomic data blockchain.

At 16:45, the salon ended, and the developers and guests took a group photo.

This chain creates the future-Xunlei Chain Technology Salon (Hangzhou Station) is over!

Developers who are not in Hangzhou don’t have to regret it. The Thunderchain Technology Salon has launched a national tour plan. Follow the Thunderchain WeChat public account and keep an eye on the technology salon information. On October 25th, I can meet you again at the Hong Kong station and listen It is said that there will be super mysterious and super high-ranking technology masters coming to the scene. Blockchain enthusiasts, don't miss it!