What is the difference between public chain, private chain and alliance chain?

Public chains are open to all, private chains are open to individuals who meet certain conditions, and alliance chains are open to authorized organizations or institutions.

The public chain, that is, the public blockchain, refers to the public blockchain that anyone in the world can read, anyone can send transactions, and transactions can be effectively confirmed.

Private chain, that is, completely private blockchain, refers to a blockchain, whose write permission is completely in the hands of an organization, and all nodes participating in this blockchain will be strictly controlled.

Alliance chain, that is, alliance blockchain, refers to a blockchain managed by multiple organizations or institutions. Each organization or institution controls one or more nodes and records transaction data. Only these organizations and institutions can read and write the data in the alliance chain and send transactions.

Extended data:

There are three types of blockchain: public chain, private chain and alliance chain.

Blockchain is a new application mode of distributed data storage, point-to-point transmission, knowledge mechanism, encryption algorithm and other computer technologies.

Blockchain is an important concept of Bitcoin. It is essentially a database without intermediary. At the same time, as the underlying technology of Bitcoin, it is a series of data blocks related by cryptography. Each data block contains the information of online transaction of Bitcoin, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

References:

Blockchain Baidu Encyclopedia