Web3 promises to provide a decentralized and immutable global network version without intermediaries, and is equipped with the same encryption verifiability as cryptocurrency, irreplaceable tokens (NFT) and dapps. It is a new decentralized application based on distributed ledger. The basic idea is described as follows: "we assume that public information will be released. Information based on our agreement on the consensus ledger. We assume that private information is confidential". The model ...