A public blockchain is a blockchain network that anybody is welcome to join and take part in. A public blockchain's activities are transparent and publicly available, and the network is often protected via a consensus method like proof-of-work or proof-of-stake.

There are various benefits of adopting a private blockchain, including:

Privacy: Private blockchains are not publicly available, which means that transactions are kept secret and only authorized parties may view them.

Control: Private blockchains provide greater control over the network and the rules that govern the way it works.

Scalability: Private blockchains may be developed to handle specific use cases and customized to meet the demands of members.

Efficiency: Private blockchains can be more effective than public blockchains since they do not require the same amount of processing resources to run the network.

A private blockchain is a blockchain system that is only accessible to a certain set of players. Transactions on a private blockchain are not made public, and the network is often protected by a process of consensus such as a multi-party contract or an authority of trust.

It is conceivable to make a private blockchain public, but this would necessitate a considerable change in the network's architecture and governance. Public blockchains are often more decentralized than private blockchains, and making a private blockchain public would necessitate a transition to more open and democratic governance frameworks.