Blockchain Types

- Public Blockchain
- Private Blockchain
- Hybrid Blockchain

1. Public Blockchain:

A public blockchain is a type of blockchain that anyone can join. Anyone can view all transactions and contribute new transactions (after they are validated through a decentralized consensus mechanism, meaning no single authority controls it). No special permission is required to participate.

This makes public blockchains transparent, secure, and trustless.
Examples include Bitcoin and Ethereum, among others.

2. Private Blockchain:

A private blockchain is controlled by a single organization that has full authority over the network. Only individuals approved by the organization can add new data. Permission is required to join the network and perform transactions.
This makes private blockchains suitable for companies or institutions that need control over who can access and manage their data.
Examples include Hyperledger and R3 Corda, among others.

3. Hybrid Blockchain:

A hybrid blockchain combines features of both public and private blockchains. For example, some parts of the network may be open to the public, while other parts require permission to access.
This model provides a balance between transparency and control.
An example is Dragonchain.