Blockchain technology is a solution to collectively maintain a reliable database in a decentralized and trustless manner. There is a database behind all systems. If the database is regarded as a ledger, the traditional accounting method can only be recorded by the only system owner, and blockchain technology allows everyone in the system to have the opportunity to compete and participate accounting. If there is any data change within a certain period of time, everyone in the system will record the book. The system will judge the fastest and best person in the book during this period of time, write the content of his records to the ledger, and record this period of time. The contents of the ledger in the system are sent to everyone in the system for backup. In this way, everyone in the system has a complete ledger.

The blockchain was born with Bitcoin. As the underlying technology of Bitcoin, it has the advantages of no intermediary participation, efficient and transparent process, low cost, and highly secure data, providing support for the decentralized decentralized system of Bitcoin.

Bitcoin can be regarded as the first application of blockchain, and it is also the most successful and mature example of the industrialization of blockchain technology, but the application of blockchain technology will not stop at Bitcoin.