A private chain is a type of blockchain that is restricted to a specific group of participants rather than being open to everyone. This setup allows organizations to have greater control over the network, including who can access and participate in it.In a private chain, the validation process is typically managed by a limited number of trusted nodes. This makes transactions faster and more efficient compared to public chains, which often require extensive computational work to secure the network.Private chains are often used by businesses and organizations that need to maintain privacy and confidentiality. For example, companies might use a private chain to share sensitive data with partners while keeping it secure from outsiders. Because they offer more control and security, private chains are becoming increasingly popular for applications such as supply chain management, identity verification, and internal record keeping. However, they sacrifice some decentralization and transparency that public chains provide.