If you’re interested in blockchain technology, you’ve surely heard of the terms ‘Private Blockchain’ and ‘Public Blockchain’. These two types of blockchain platforms work differently but before going more in depths into their use, let’s clarify what those terms imply in the most simple and straightforward way.
What do Private/Public blockchains entail?
- A public blockchain is generally known to be public and open to anyone to join. Through it, your participation is permissionless, anonymous and it is based on the consensus mechanism. Also, it is either using the Proof of Stake or Proof of Work process.
- A private blockchain is usually created by a single organization and has tighter requirements around nodes joining. In other words, its participants are permisionned and their identity is disclosed. Also, its security system is based on either voting or multi-party consensus.
Now that we have a better idea of the differences between these two types, we would like to focus a little bit more on public blockchains.
What are the benefits of public blockchains?
- A public blockchain is a decentralized blockchain
Public blockchains are decentralized: it means that no entity will be able to have control over it. Thus, it is harder to censor and block. On the contrary, private blockchains are susceptible to be blocked by a company, an organization or whoever runs it.
Similar to how Google can decide to stop running services that are no longer profitable, the entities running private blockchains can decide to no longer maintain the service. Especially if it’s no longer profitable or affected negatively by government regulations.
- A public blockchain has lower infrastructure costs
Public blockchain lowers the cost of entry because it is accessible to a lot of people. With private blockchain, it is fundamental to place the necessary redundancy in infrastructure to support the blockchain. On public blockchains, the infrastructure is there, you just have to pay for what you use (transaction fees and gas among other things).
However, like in any system, public blockchains also have their drawbacks and there are several myths about public blockchains that we would like to demystify. The most popular one being:
‘Public blockchains are more secure than private blockchains’
This statement comes from the assumption that public blockchains are already secure because it has a lot of nodes but it is not necessarily true as it depends on how the blockchain is designed and built.
To read the full article, please visit our official blog: https://luxtag.io/tech-talks-are-public-blockchains-more-secure-than-private-blockchains/