According to the official website of blockchain, blockchain is a decentralized and distributed account book, which has the characteristics of blockchain storage, tamper resistance, safety and reliability. It combines distributed storage, point-to-point transmission, knowledge mechanism and cryptography. The growing data blockchain records transactions and information to ensure the security and transparency of data. By the end of June, 5438+February, 2023, China's blockchain scale was the largest in the world, which benefited from China's huge network user base, mature payment habits and technology, and the active exploration of blockchain application by the government and enterprises.