Protocol

A crypto protocol is a set of fixed rules for a blockchain. These rules determine how the network works without a central administrator.

What is a protocol?

Think of a protocol as a blockchain’s rulebook. It sets out, for example, when a transaction is valid and how data is stored.

Computers on the network check these rules independently. This allows the network to agree on which transactions can be added, without a bank or another central company making the decision.

A protocol can also include rules about tokens, such as how many tokens can be issued, how new tokens are created, and who receives transaction fees.

An example of a protocol

Suppose someone sends bitcoin to another person. The Bitcoin protocol determines which checks are needed before the transaction is added to the blockchain.

Computers on the network check, among other things, whether the sender has enough funds and whether the transaction follows the rules. Because everyone uses the same rules, the network can reach the same outcome.

Why are protocols important in crypto?

A protocol is the foundation of a blockchain. It determines how participants work together, how transactions are checked, and how the network is secured.

In crypto news, you’ll often read about a protocol update. This means the rules or software of a network may change. These changes can affect security, fees, or how the network works.

A protocol is not the same as a token. A token is a digital unit within or built on top of a protocol. The existence of a protocol also doesn’t automatically mean that a token is valuable or safe.