Blockchain technology runs in a completely P2P network, it is not owned by anyone, and no one knows where it is running, so it has excellent confidentiality and security. An encrypted communication cipher that does not require a centralized network It is a technology weapon in the intelligent era that urgently needs to be restarted. Some people may suspect that the significance of the blockchain is exaggerated, such as it may not be applied in the field of superstructures, but its use in law and even cultural entertainment has been on the agenda: for example, Notaries are used to confirm and verify signatures on legal documents such as contracts and contracts. Using blockchain technology, these documents can be stored digitally and become part of the digital ledger. Some companies also want to apply blockchain technology to legal documents. "Timestamps and fingerprints of media files", thereby eliminating the current need for notary rubber stamps. What does this text mean? ['Blockchain technology has broad application prospects in the intelligent era.', 'The current blockchain technology is not yet mature.', 'The advantage of blockchain technology is its excellent confidentiality and security.', "People's doubts about the blockchain in real life are not justified."]