4 main types of Blockchain technology.
You might know about a public Blockchain like Bitcoin and Ethereum, which is the decentralized versions. But did you know there are different types of Blockchains that are used in other ways?
Public Blockchain (permissionless) - This is where Ethereum and Bitcoin blockchain belongs, it is a decentralized network run with a consensus method by validators all over the world. It can be viewed by anyone as it works as an open ledger 📖
Private Blockchain (permissioned) - Big companies also take advantage of the Blockchain technology for example Walmart and Nestle that want to be able to track the whole process and handling of products so they ensure it meet quality standards but don't want to share the data with anyone external.
Hybrid Blockchain - Partly permissioned and permissionless.
For example medical records could be stored in a hybrid blockchain. The record can't be viewed by random third parties, but users could access their information.
Consortium Blockchain - This one is like a mix between private and public Blockchains. A consortium blockchain could be used by multiple organizations because it allows them to share data across the network privately and securely, could be used in research when data needs to be shared with other researchers.
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