Alliance chain Blockchain is a distributed ledger where each node is responsible for storing data. Depending on the difference in access control, the blockchain can be divided into a public string, a private string, and an alliance string. Public chain The public chain is fully open to the public and allows anyone, regardless of time and place, to engage in transactions and store data in a chain that only requires a device connected to the Internet. For example, BTC blockchain and ETH blockchain are both public chains. Because each node is blockchain independent, user privacy can be greatly protected. In addition, any node with the same rights can try to record and update data through a consensus mechanism. All public chain data is transparent so that everyone can check the history. The public chain is highly decentralized because it runs according to established rules, which does not allow developers or other users to make changes to rules and data. However, the trading speed is ...