"Ethereum Technology and Application Conference" ended perfectly, let's see what the big guys said
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At the meeting, Mr. Jiang Tao, founder & chairman of CSDN and founding partner of Geek Gang, delivered a speech by the sponsor. Mr. Jiang Tao introduced the trend of blockchain development in 2019 and the double-speed growth of blockchain technology content in the CSDN community. He concluded: "In the age of the Internet, perhaps the best place to stay is in information and commerce. E-commerce and information have undergone tremendous changes, and have been digitally transformed, changing the form of information and changing the form of business. Next, the district The blockchain form will have a huge impact in the field of financialization, and we hope that more developers can join this ecology and join this revolution.”
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Next, Jiang Yingying, CEO of LinkTime, introduced the development overview of the global Ethereum community and how developers can join the Ethereum community. She began with "What is Ethereum? Where does it start? How does Ethereum work? How does it work?" How to use Ethereum? How to develop in Ethereum? Client of Ethereum? Introduction to Ethereum 2.0" and other aspects were explained, and at the same time, the overview of applications such as Unitiems and PandaX wallet was explained to the audience.
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Jiang Yingying, CEO of LinkTime
Next, Vitalik Buterin, the founder of Ethereum, gave a speech on the theme of "Trans-sharding Transactions of Ethereum 2.0" amid warm applause. Vitalik from "The current chain and the fragmented chain, the design of Ethereum 2.0, asynchronous (asynchronous) transactions, the problem of 'train tickets and hotels', the way of 'yank' (yank), faster asynchronous transactions, through A method similar to Plasma to do synchronous transactions, improving the speed of transaction confirmation does not need to increase the speed of blocks" and other aspects.
Vitalik said that there will be 1024 shard chains in the ETH 2.0 phase, and the beacon chain manages the consensus algorithm and cross-shard communication, but the communication is limited, and too much communication will put too much pressure on the beacon chain. Therefore, the communication interval is 6 minutes, and every 6 minutes, each shard can discover the hash value of other shards; users and applications operate and run on different shards. Finally, Vitalik made the following conclusions:
Theory: Sharding is a tool for distributing data and computing, and there are many ways to implement scalable application environments on this bottom layer;
These methods maintain speed and availability in sharded blockchains;
For the full content of Vitalik's live speech, see:
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Ethereum founder Vitalik Buterin
Next, Hsiao-Wei Wang, a core researcher of Ethereum, gave a speech on the topic of "Ethereum 2.0 Beacon Chain Verifier". Hsiao-Wei started from "What is Ethereum 2.0? What is the beacon chain? How do I staking and become a Validator? How much is the reward? Will it be easy to be fined (slashing)? The relevant follow-up plans are What?" and so on.
Hsiao-Wei introduced the development roadmap of Ethereum 2.0, including: phase 0 (beacon chain), phase 1 (Sharded data chain (sharded data chain, that is, the shard chain is used as data consensus, and Layer 2 is used as the application state execution protocol)), phase 3 (Shard state execution, to achieve cross-shard transactions), phase 3 and subsequent iterative updates (Casper CBC, STARKS, etc.).
Next, Hsiao-Wei talked about the incentive mechanism that the honest validator (Honest Validator) can obtain, that is, the rewards that the honest validator can obtain include: 1) Block proposer reward (that is, the reward obtained as a block proposer); 2 ) Casper FFG reward (that is, the reward obtained by voting for the correct beacon chain); 3) Crosslink reward (that is, the reward obtained by voting for the correct shard chain).
Next, Hsiao-Wei described the responsibilities of validators during phase 0 (proposing valid beacon chain blocks, attesting to beacon chain blocks), and the penalties that validators will receive due to misconduct and fines (slashings), the verifier’s voluntary exit (Voluntary Exit, that is, the verifier applies to the system to withdraw the pledged 32 ETH, thereby exiting the verification mechanism), and discusses the next plan (launching a stable test chain, cross-chain The test chain of the client, the deployment of the mortgage contract, etc.) are introduced.
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Next, Gary Rong, the core developer of Go-Ethereum, gave a speech on the topic of "Deep into ethereum light client protocol (deep into the ethereum light client protocol)". Gary said that the light node will only synchronize the blockchain and synchronize the smart contract on the server side, so that the status of all nodes can be checked through a network request, improving local efficiency. Light nodes can also subscribe to smart contract events. Secondly, users can complete the search function of smart contract events, improve node search efficiency, and optimize storage. Compared with centralization, the server can perform load balancing and flow control.
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Next, Brantly Millegan, Director of Developer Relations at ENS, will give a speech titled "Your DApp isn't finished without ENS (Without ENS, your DApp is not complete)". Brantly Millegan said that the hexadecimal Ethereum address is not friendly to users, it cannot be remembered or written, and can only be copied. ENS is a smart contract on the blockchain, which can turn the blockchain address into an Internet domain name. This year, we will launch DNS (Domain Name System) integration, increase the number of DNS LTD (top-level domains) to 1,200, and create ENS records for DNS domain names.
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Brantly Millegan, Director of Developer Relations, ENS
Next, Loi Luu, CEO of Kyber Network, will give a speech on the topic of "Connecting Decentralized Liquidity (Connecting Decentralized Liquidity)".
Starting from the perspective of "what is decentralized liquidity? Why is decentralized liquidity needed?", Loi said that "the current decentralized liquidity is very scattered", and then said that Kyber, as an "on-chain liquidity protocol", can "Connect liquidity on all chains" and introduce the current data situation in the Kyber network, including a total inventory of more than 7 million US dollars, 31 reserves (Reserves), 66 wallets & Dapp integration The Kyber protocol, the Kyber network supports a total of 74 tokens, etc., and mentioned the integration of the Kyber Network liquidity protocol into the wallet Zion Vault of its blockchain mobile phone EXODUS 1.
Finally, Loi made a concluding statement: 1) Decentralized liquidity is very important for Dapps; 2) Kyber is working on connecting all on-chain liquidity resources; 3) There is still more work to be done in the cross-chain field.
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Kyber Network CEO Loi Luu
Cong Tang, the founder of Ethereum Confidential Transaction, gave a speech next. The Ethereum Confidential Transaction project is a confidential transaction system for digital currency and cryptocurrency. It is very important that it can be audited and accountable. The Accountability confidential transaction scheme proposed by ECT can provide a plug-and-play confidential transaction mechanism for mainstream cryptocurrencies such as ETH.
Privacy on Ethereum is very important, including the privacy of digital currencies, and more importantly, corporate users. Both digital currency and Ethereum are expanding enterprise applications, and it is also very important for enterprises to obtain privacy protection. What corresponding privacy features does Ethereum need to help users provide? Tang Cong believes that, first, the balance of the Ethereum account and the amount of each transaction are hidden; the second is Accountability, once the account balance is hidden, no matter whether it is in the form of proof or encryption, only the transaction amount can be transferred. See, third parties cannot see.
Then, colleagues from Cong Tang took the stage and demonstrated in detail how PGC implements confidential transactions for ETH through smart contracts deployed on Ethereum.
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Cong Tang, founder of Ethereum Confidential Transaction, and colleagues
Next, Guillaume Felley, Technical Director of Liquidity Network, gave a speech on "How Commit-Chain Achieves Higher Stability and Security, A Preliminary Study of NOCUST".
Finally, Guillaume Felley discusses why unsupervised transactions are exciting. First, we found that monitoring the market is not efficient, and users sometimes trade titles. Stock trading in the digital age, such as the New York Stock Exchange, although it trades fast and has a large trading volume, users need to supervise and supervise. But through our cryptocurrency transactions, it allows users to have control, and users have gained a lot of control. Of course, one of its disadvantages is that the speed is relatively slow, which does not meet our expectations. This is also the decentralization of liquidity. Not a lot of one reason.
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Guillaume Felley, Technical Director, Liquidity Network
After a short lunch break, in the afternoon session of the "Ethereum Technology and Application Conference", Zhang Zhongnan, CEO of AlphaWallet, delivered a speech on the theme of "TokenScript: Building the Front End of Token and DApp". Mr. Zhang Zhongnan said that Ethereum itself can be accessed anytime and anywhere, but current dApps cannot do this. And TokenScript can be used to build the front end of token and dApp, so that dApp can be safely accessed anytime and anywhere.
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Next, Wang Donglin, the founder of YottaChian, gave a speech on the theme of "Opening a New Era of Blockchain Hardcore Internet Giants". Mr. Wang Donglin said that YottaChain can provide the best centralized storage in the world in terms of security, reliability and cost. YottaChain is going to be a persistent storage market and build large-scale commercial applications.
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Wang Donglin, founder of YottaChian
He first introduced the meaning of DAI, the largest stable ratio of Ethereum, and its basic position in decentralized finance (DeFi). Next, he explained how to ensure that DAI always has excess assets for collateral, and the difference between single-collateral DAI and multi-collateral DAI. Pan Chao said that currently MakerDAO is still in the stage of single-mortgage DAI, and all resources currently belong to Ethereum, which can withstand a sudden drop of more than 80%. He also mentioned the first batch of multi-collateral candidates that MakerDAO just announced yesterday. In the end, he concluded: "The biggest problem with decentralized finance is not the technology itself, but the asset side."
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Chao Pan, Head of MakerDAO China
Mr. Jiang Xuxian reviewed the security issues in the development process of the three major public chains in the past year: as of May 31, 2019, there were 109 DApp attacks on EOS, and the loss was 930,000 EOS; There were 11 security incidents at the end of the month, with a loss of 29 million TRX, nearly 10 million RMB. There were 5 security incidents in Ethereum, resulting in a loss of 24,000 Ethereum and a loss of about 50 million RMB.
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Jiang Xuxian, Founder & CEO of PeckShield, Former 360 Chief Scientist
Mr. Xu Maotong said in his speech that secure multi-party computing is a pure cryptography privacy computing solution, which implements search and complex computing logic on the basis of encryption. The application scenarios of secure multi-party computing include: 1) Enterprise and individual analysis to realize model security analysis; 2) Joint risk control between financial credit information, accurate data matching in the marketing industry; 3) Personal data safe custody and safe realization.
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Xu Maotong, co-founder/CEO of ARPA
MixMarvel is the first company to apply the Layer 2 expansion solution to game products, and the blockchain lighthouse game product "Cloud Fighting Dragon" launched is very popular. Jade Zhang said that 2019 is a year of popularization, and hopes that based on technology, services and distribution platforms, popular scale applications will appear in front of everyone. Its company's product Yundoulong is now ranked among the top five Ethereum game DApps. It is a lighthouse-type product and is currently overcoming the bottlenecks and problems of developing games based on the blockchain.
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MixMarvel Yundoulong Founder/CEO Jade Zhang
In his speech, Tongtong Gong said: Data is the blood of every role and every action in the value chain, but the challenge we are currently facing is that it is very difficult to obtain data. One way is to run Ethereum's own node, which can only get unprocessed data; another way is to use an API provider. As a professional company of blockchain data and encrypted currency data, Amberdata’s API and platform can provide you with data on the Ethereum platform chain, including historical data, real-time data, value-added data, and top 13 transactions in the market All data.
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Afterwards, Anne Jiang, head of China at the Ethereum Community Foundation, delivered a speech titled "The Road to ETH2.0 Development". Anne Jiang said that ECF (Ethereum Community Fund) has funded nearly 40 projects so far. ECF has currently received thousands of project applications, she said, "For applicants, we no longer give a simple yes or no answer, we will try our best to support every stage of project development, and donate member units also We will find needed talents, projects and organize meetings for them in the ecology, and there are various projects in the community to keep in close contact with us and provide resources.”
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Anne Jiang, Head of China, Ethereum Community Foundation
Mr. Xu Jianzhi said that Microsoft Azure Blockchain provides Azure Blockchain Service in development, and packages Ethereum into a hosting service, so that users can use it quickly. He compared this service to "selling popcorn in a movie theater": We like movie stars very much. We used to like to be movie stars ourselves. We did IE when the browser was very prosperous, and we did Windowsphone when the mobile phone system was great. Today, we support Ethereum, we sell popcorn in movie theaters — that’s where we are. So we support different blockchains and have different services, and we connect the middle layer with the application layer.
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Next, as the last guest speaker of the "Ethereum Technology and Application Conference", Zane Zhang from Lingtai Technology, one of the organizers, delivered a speech on the theme of "PandaX - Mobile Application Service Platform Based on Ethereum" . Zane Zhang mainly introduced PandaX, the Ethereum mobile application service platform being developed by Lingtai Technology. He introduced the services provided by PandaX from four parts: customized services related to ERC20 and ERC721 contracts, DApp access and APP calling.
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Zane Zhang, Lingtai Technology
Next, the meeting entered the final roundtable forum session. Ethereum founder Vitalik Buterin, EthFans editor-in-chief A Jian, AlphaWallet CEO Zhang Zhongnan, and Microsoft Azure Blockchain chief project manager Xu Jianzhi jointly discussed the road to "Ethereum 2.0".
Aiming at the biggest challenge of Ethereum 2.0, A Jian believes that technically speaking, the biggest problem in the development of Ethereum 2.0 is cross-shard transactions. In transactions, data availability and data credibility require more in-depth research. Research and more subtle mechanism design, these aspects will be the main technical challenges. Zhang Zhongnan believes that if 2.0 is delivered as scheduled, the biggest challenge will be how to migrate the smart contracts or applications that have been deployed on the existing 1.0, or whether users have the motivation to migrate to the 2.0 chain.
So, what else needs to be improved in the Ethereum field? In this regard, Vitalik Buterin said that the Ethereum community has had many new challenges in the past year. Everyone is very happy and thinks that we are all friends, but everyone is unhappy and is thinking, because there are still many new blockchain projects emerging. , there are many people who think that the new project will be a competitor, which is a complicated issue. In addition, many new companies do not have new business models, and most of their funds come from foundations, which is also an important issue.
Finally, the host asked everyone what is the most meaningful number for each of them. Vitalik Buterin replied: "1.92 million, the height of the block hard fork!" This number is very meaningful. On the evening of July 20, 2016, Ethereum was in A hard fork occurred at the 1.92 millionth block height.
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epilogue
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According to the "2019 Chinese Developer Survey Report", nearly half of the developers in China are based on the Ethereum platform, ranking first. New applications are constantly emerging. Although faced with some doubts such as slow updates and low transaction performance, Ethereum is undoubtedly still one of the best blockchain development platforms in the world.
Through this conference, developers also saw the work that the creators of Ethereum have done for this platform, and also brought stronger information to domestic developers. I believe that when we see you next year, more developers who have developed excellent Ethereum-related products will gather here.
