What is blockchain

: Bitcoin uses blockchain technology, but the blockchain is not equivalent to Bitcoin; the whole article is based on Bitcoin's underlying blockchain technology, so some models may not be applicable to Ethereum. In addition, because the article adopts a certain abstract, class-like narrative, there are some places in the middle that are more or less different from the rigorous technical implementation of the blockchain. If you are confused, you can leave a comment or private message below the comment. Discuss together. Finally, it is also limited by the incompleteness of its own knowledge structure. This article will be revised at any time after I have a deeper understanding of the blockchain. The last update time can refer to the timestamp below the answer. In addition, as a popular science article, you can reprint it at will, indicate the source and author of this article, no need to ask for a separate private letter. --- First of all, don't think too much about the blockchain. He is a database storage system that can be operated in different parts of the world. It is different from the traditional database operation. The read and write authority is controlled by a company or a centralized power ( Centralized features), blockchain believes that anyone with the ability to set up server nodes can participate. Nuggets from all over the world deployed their own nodes and connected to the blockchain network to become a node in the distributed database storage system; once joined, the node has exactly the same rights as all other nodes. And obligations (decentralized, distributed features). At the same time, for those who perform services on the blockchain, they can read and write to any node in the system. Finally, all nodes in the world will be synchronized one by one according to the completion of a certain mechanism. The data of all nodes in the blockchain network is completely consistent.