1. What is blockchain?
Technical point of view : distributed database in a decentralized and trustless manner;
Product perspective : refers to technical solutions through decentralization and trustlessness
2. Can you explain what a blockchain is?
In layman's terms, blockchain technology refers to a way for the whole people to participate in bookkeeping. All systems have a database behind it, and you can think of the database as a big ledger. Then who will keep the ledger becomes very important. But now in the blockchain system, if there is any data change within a certain period of time, everyone in the system can come to bookkeeping, and the system will judge the fastest and best person in the bookkeeping period, and record him The content is written to the ledger, and the contents of the ledger during this period are sent to all others in the system for backup. In this way, everyone in the system has a complete ledger. In this way, we call it blockchain technology .
3. What are the benefits of such a full-name ledger blockchain?
The security is increased. First of all, there is no central ledger, so it cannot be destroyed. Each node is only a part of the system, and each node has equal rights and has the same ledger. Destroying some nodes has no effect on the system at all. Secondly, there is no way to cheat, because unless you can control the computers of most people in the system to make changes, the system will refer to the opinions of the majority to determine what is the real result, and it will find that it is completely meaningless to modify your own ledger (because others deny). Secondly, since there is no centralized intermediary, letting everything run automatically through pre-set procedures can not only greatly reduce costs, but also improve efficiency. And because everyone has the same ledger, it can ensure that the ledger recording process is open and transparent .