Xinhua Daily published today's article "Bitcoin: The First Successful Application of Blockchain Technology". The article mentioned that Bitcoin is the first successful application of blockchain technology. The transaction records of the traditional financial system are kept in the database of the bank center, and the blockchain is the book of Bitcoin. The ownership of the bitcoin generated at any time and the transaction record are recorded in the blockchain book. In general, Bitcoin has the following characteristics: 1. The total amount is limited, and the issue will not go out of control. 2. Good anonymity, the identity of the account holder will not be known to anyone. 3. The production and maintenance of Bitcoin consumes a lot of energy. 4. The price of Bitcoin is subject to large fluctuations.