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  • Laura Pamatian

Private or Public Blockchain

A private blockchain is a decentralized network that is restricted to a specific group of participants. Only authorized users are allowed to join the network and access the information stored on the blockchain. Private blockchains are typically used by organizations to securely store and share sensitive data among a trusted group of participants.


On the other hand, a public blockchain is a decentralized network that is open to anyone. Anyone can join the network and participate in the consensus process, which is used to validate transactions and add them to the blockchain. Public blockchains are decentralized and transparent, meaning that anyone can view the information stored on the blockchain.

There are several key differences between private and public blockchains:

  • Accessibility: Private blockchains are restricted to a specific group of participants, while public blockchains are open to anyone.

  • Consensus process: Private blockchains may use a variety of consensus mechanisms, such as proof of authority or proof of stake, while public blockchains typically use proof of work or proof of stake.

  • Transparency: Private blockchains may not be transparent, as the information stored on the blockchain may be restricted to specific participants. Public blockchains, on the other hand, are transparent, as anyone can view the information stored on the blockchain.

  • Security: Private blockchains may be more secure than public blockchains, as they are restricted to a specific group of participants and may have additional security measures in place. Public blockchains, on the other hand, may be vulnerable to attacks due to their open nature.

Overall, private blockchains are typically used by organizations to securely store and share sensitive data, while public blockchains are used for a wide range of applications, including cryptocurrency transactions, supply chain management, and more.


In conclusion, it is important to base the selection of a private or public blockchain on the purpose and needs of your project.




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