Public chain Any individual or group in the world can send a transaction, and the transaction can be effectively confirmed by the blockchain, and anyone can participate in the consensus process. Like Bitcoin, Ethereum.
Consortium chain The consortium chain is limited to consortium members. Because it only opens all or part of its functions to members, the read and write permissions and accounting rules on the consortium chain follow the rules of the consortium. Come "private customization". It is suitable for B2B scenarios such as inter-institutional transaction, settlement, or clearing.
Private chain The private chain is open to individual individuals or entities, and is only used by private organizations, such as the company's internal use. The read and write permissions on the private chain, and the permissions to participate in accounting are all set by the private organization.