Facebook will issue its own digital currency through the block chain. Alipay will use the block chain to make payment system. The Tencent application block chain has made the digital invoice. Morgan chase will use the block chain to optimize its cross-border transfer service. Of course, it does not mean that the block chain can only be applied in the field of gold and finance. But have you found that the block chain project that falls in the field of financial services really occupies? Most of them.

The reason for this phenomenon is that blockchain and finance have a natural fit. In essence, blockchain can solve the problem of trust in data, while finance is nothing more than trust. So today, from the operation principle of blockchain, I will tell you how blockchain solves the problem of data trust.

Before specifically speaking about this principle, we need to understand such a thing: we have said before that blockchain is a database, but it is different from common databases in that it is a distributed database.

If we compare the database to an account book, the general database is equivalent to an account book, and only the creator, that is, the centralized company, can keep accounts on this account book. The block chain is equivalent to many accounts. Except for the founder's account book, anyone who wants to participate can get the account books, and everyone's account books are identical in status. They can record all the data completely and be independent of each other.

After understanding this, we can talk about the principle of blockchain. The principle of blockchain is as follows: when a transaction data is generated, according to the normal database process, the centralized company will directly process the data, and then verify, protect, etc. are all maintained by the company. Such data recording and processing are all the ones that has the final say, which is very easy to cause the data to be opaque.
In the blockchain, there is no longer a single company to maintain data, and everyone (including users) can participate in it. In addition to the centralized company having a database, everyone will have a database, and everyone's database is independent of each other, equal in status, and can store complete data according to the block chain structure.

After a data is generated, each participant can process the data, and then send the processed data to each other for confirmation. When most of the other participants think that the data is authentic, there is no problem in processing, and consensus can be reached, the data will be recorded, and finally synchronized to everyone's database Medium.

There are three advantages of this principle. First, it disperses power and ensures the fairness of data processing. No one can record data independently, avoiding the situation that a single recorder is manipulated or maliciously records fake accounts. Second, it solves the problem of data trust, because the data will be recorded in multiple databases. Once someone changes the data in the database, it is very tolerant Easy to be found, thus making the data more transparent; third, reducing the security risk of the network, because multiple databases coexist, in theory, unless all nodes are destroyed, the accounts will not be lost, thus ensuring the security of the account data.

Generally speaking, the operation principle of blockchain is a process in which everyone keeps accounts together, verifies each other and reaches consensus. In today's era of data explosion and lack of trust, we hope that blockchain can become a ray of sunshine on our head, solve these problems, and illuminate the direction of digital development in the future.

Welcome to the previous article ："jokining talk" about blockchain

🤩“Joking Talk” About Blockchain | First Lecture : What Is Blockchain❓

🤩“Joking Talk” About Blockchain | Second Lecture : Why Blockchain Is Called Blockchain❓

🤩“Joking Talk” About Blockchain | Third Lecture : Characteristics of blockchain - decentralization❗

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