A private blockchain is a restricted, permissioned ledger system designed for organizations requiring greater control over data access and network participation. Unlike public blockchains, it allows only authorized parties to join and validate transactions. Commonly used in enterprises, supply chain management, healthcare, and finance, private blockchains ensure higher security, faster transactions, and regulatory compliance. These systems are ideal for businesses seeking to streamline operations while maintaining data confidentiality, internal governance, and improved collaboration across partners within a closed, trusted network.