Vitalik Buterrin Ethereum Developer Conference Speech Preview

On June 29, 2019, the " 2019 Ethereum Technology and Application Conference " co-sponsored by CSDN and Ling Titan Technology was held in Beijing.

As the influential Ethereum Technology Conference in China, this session revolves around the Ethereum Eco-Panoramic, Ethereum Future Development, Ethereum Development, and Quality Project Cases, and invites Ethereum founder Vitalik Buterin, the core Technology developer Hsiao-Wei Wang, well-known project leaders at home and abroad, industry leaders and Ethereum eco elite experts discuss the new development of Ethereum and share the latest Ethereum development experience.

In the warm applause of Eitafang founder Vitalik Buterin , the first speech of the conference was published, with the theme of “ Ethernet 2.0 Cross-Slice Trading ”. Vitalik gave developers a detailed introduction to the concept and advancement of Ethereum 2.0, and introduced the principles of cross-sliced ​​transactions to developers on the topic of "Ethereum Performance" that developers care about. Answers to common questions from developers.

Before the full text of the speech, friends who can't wait to read can read this quick-view version first. This article was published by Babbitt (continuous update).


The current chain, all nodes download and verify all transactions, which severely limits scalability. The future blockchain is fragmented, which means that each node only downloads and verifies a portion of the transaction.

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For example, in the design of Ethereum 2.0, there are 1024 shards, so each node only needs to verify the 1/1024 transaction. This change will improve the performance of the blockchain, which may increase the ETS's 10 transactions per second to 10,000 transactions per second, but this will face a new challenge, namely:

Users and applications are on different shards. How do you "communicate"?

A transaction is issued on one shard, and then every 6 minutes, each shard is "communicated", that is, the hash value of other shards is found. A beacon chain to manage consensus algorithms and cross-slice communication.

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For example, if you want to book a train ticket and a hotel, you will certainly want them to order together. If there is only one and there is no other, it doesn't make sense. What if the train and the hotel are in different shards?

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First of all, the shard of the train ticket is a contract. The shard of the hotel is a contract. Then, by "tug", you can order at the same time. If you give up the booking, and others want to order, you can pull Go to their shards.

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Secondly, by synchronizing transactions in a way similar to Plasma, transactions can be initiated in any shard, but the assets will be in the contract and take a week to take out. At this point, if anyone can prove that the status is not valid, they can cancel the withdrawal.

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Finally, in the 2.0 design, increasing the speed of confirmation of transactions does not require increasing the speed of the block. Fragmentation is a tool for distributing data and calculations. There are many ways to implement a scalable application environment on this bottom layer. The speed and usefulness of the blockchain is maintained. Ethereum Layer1 is a simple and secure underlying protocol that is not used, and then continues to be researched and improved in Layer 2.

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(This article will continue to be updated after finishing the compilation)