What are public and private blockchains?

Blockchain is a distributed database that ensures the security and transparency of transactions. However, there are different types of blockchains, including public and private. Public blockchains, such as Bitcoin or Ethereum, are accessible to everyone, providing complete decentralization and openness. Any user can join the network, verify transactions, and create new blocks. In contrast, private blockchains are intended for a limited group of participants. This ensures a high level of confidentiality and control, making them attractive for businesses and organizations. Both types of blockchains have their advantages, depending on the goals and requirements of the user.