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This article mainly explains "what is the concept of blockchain". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. let's follow the editor's train of thought to study and learn what the concept of blockchain is.

What is the blockchain?

To put it simply, blockchain is essentially a special distributed database. First of all, the main function of the block chain is to store information. Any information that needs to be saved can be written to or read from the block chain, so it is a database. Second, anyone can set up a server, join the blockchain network, and become a node. In the world of blockchain, there is no central node, each node is equal, and the entire database is kept. You can write / read data to any node, because all nodes will eventually synchronize to ensure that the blockchain is consistent.

Second, the biggest characteristics of the block chain:

Distributed database is not a new invention, there are such products on the market for a long time. However, the blockchain has a revolutionary feature. The blockchain has no administrator, it is completely non-central. All other databases have administrators, but the blockchain does not. If someone wants to add an audit to the blockchain, it cannot be achieved because it is designed to prevent the emergence of a central authority.

It is because it is unmanageable that the blockchain can be made uncontrollable. Otherwise, once big companies and groups take control of the management, they will control the entire platform and other users will have to listen to them. However, without the administrator, everyone can write data to it, how can we ensure that the data is reliable? What if it is changed by the bad guys? Please read on, this is the wonderful part of the blockchain.

Third, bifurcation of the blockchain even if the blockchain is reliable, there is still a problem unsolved: if two people write data to the blockchain at the same time, that is, two blocks join at the same time, because they are both connected to the previous block. it forms a bifurcation. Which block should be adopted at this time? The rule now is that new nodes always use the longest block chain. If there is a fork in the block chain, it will see which branch is behind the bifurcation point, reaching six new blocks first (called "six confirmations"). According to the calculation of a block in 10 minutes, it can be confirmed in an hour. Because the speed at which new blocks are generated is determined by computing power, this rule means that the branch that has most of the computing power is the authentic bit chain.

Thank you for your reading. the above is the content of "what is the concept of blockchain". After the study of this article, I believe you have a deeper understanding of what the concept of blockchain is, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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