Let's have a look at the following types of blockchain:
- Public: Public blockchains have ledgers visible to everyone on the internet and anyone can verify and add a block of transactions to the blockchain. Some examples are Bitcoins, Ethereum, Dash, Factom, and the hundreds of Altcoins that are available in the market today.
- Private: The second type of blockchain is the private blockchain. All permissions are kept centralized to an organization. Private blockchains allow only specific people with specific roles in the organization to verify transaction blocks, but everyone on the internet is allowed to view them. This also depends on the organization's decision. Some examples are MultiChain and Blockstack.
- Consortium