Public vs Private Blockchains, Explained

Not all blockchains are open to everyone. The biggest structural distinction is between public (permissionless) and private (permissioned) blockchains, and it shapes what each is good for.

Public blockchains

Public chains like Bitcoin and Ethereum let anyone read, transact, and help run the network. They are open and censorship-resistant, at the cost of speed and, sometimes, higher fees. This openness is what makes cryptocurrencies possible.

Private and permissioned chains

Private chains restrict who can participate, and are often used by companies or consortia for internal record-keeping. They are faster and more controllable, but give up the decentralization that defines public crypto. Many enterprise and even some central-bank experiments use permissioned designs.

Understanding which type a project uses tells you a lot about its trade-offs. We define these terms further in the glossary.

Educational content, not financial advice. Crypto is volatile and you can lose money. Do your own research. Crypto Ruble Coins is a news and education publication — not an exchange, conversion, or off-ramp service.