What is a blockchain?

Blockchain is a term in the information technology field. In essence, it is a * * * shared database, and the data or information stored in it has the characteristics of "unforgeability", "leaving traces in the whole process", "traceability", "openness and transparency" and "collective maintenance".

As an important concept of Bitcoin, blockchain is essentially a decentralized database. At the same time, as the underlying technology of Bitcoin, it is a series of data blocks generated by cryptography. Each data block contains a batch of online transaction information of Bitcoin, which is used to verify the validity (anti-counterfeiting) of the information and generate the next block.

On 20 19 65438+ 10/0, the National Internet Information Office issued the Regulations on the Management of Blockchain Information Services. 201February 2, 9, 19, the word was selected as one of the top ten buzzwords in Chewing Words.