The four most famous international exchanges:

Binance INTL	OKX INTL	Gate.io INTL	Huobi INTL
China Line　APP DL	China Line　APP DL	China Line　APP DL	China Line　APP DL

Note: The above exchange logo is the official website registration link, and the text is the APP download link.

Private chains are open to individual individuals or entities and are only used within private organizations, such as companies. The read and write permissions on private chains and the permissions to participate in bookkeeping are all set by private organizations. For example, office approval and financial auditing within enterprises; budget and execution in government industries. The main value of private chains is to provide secure and malleable sources, which cannot be tampered with and are automatically executed, which is difficult for traditional systems to do at the same time.

Because private chains have fewer nodes, the transaction speed is fast. The transaction speed of private chains can be faster than any other blockchain, even close to the speed of regular databases that are not blockchains. And because even a small number of nodes have a high degree of trust, it is not necessary for each node to verify a transaction (no mining is required).

Because private chains and consortium chains require authorization to join and access, private chains and consortium chains are also called permission chains.

Private chains are suitable for enterprises and organizations.