Simple description of block chain

Block chain (Blockchain) refers to a technical solution that collectively maintains a reliable database through the past centralization and the way to trust.
In general, the block chain technology refers to a way for the whole people to participate in accounting. There is a database behind all the systems, and you can think of the database as a big book. So it's important who to write this book. At present, who is the system of who to keep the account, the WeChat book is the Tencent in the record, the account of Taobao is Ali in the record. But now, in the block chain system, everyone in the system can have an opportunity to take part in the account. In a certain period of time if there is any data change, each system can be account, the system will judge this time keeping the fastest and best man, his record written books, and books content this time to all the other people within the system backup. So everyone in the system has a complete book. In this way, we call it block chain technology