Blockchain terms

Blockchain terms explain the vocabulary behind decentralized technology. From wallets and hashes to smart contracts and consensus mechanisms, this glossary helps you understand how blockchain works — and why it matters for cybersecurity and privacy. Whether you’re curious about how Bitcoin functions or how blockchain supports secure digital records, these terms are your starting point.

Crypto anarchism

Crypto anarchism, or crypto anarchy, refers to a philosophy advocating for privacy and freedom through the use of cryptography and decentralized technologies.

Web3

Web3 is a concept of a decentralized internet that emphasizes peer-to-peer interactions, user control, and interoperability.

Smart contract

A smart contract is a self-activating agreement, containing stipulations and provisions among participants, directly embedded within computer programming lines.

MetaMask

MetaMask is a cryptocurrency wallet that lets you store Ether and ERC-20 tokens.

Merkle tree

A Merkle tree is a data structure in computer science and cryptography where each node contains a cryptographic hash of its children's nodes, forming a binary tree.

Immutable ledger

An immutable ledger is a record-keeping system where the data entered can’t be altered, tampered with, or deleted.

ERC-721

In general terms, ERC-721 is a standard for generating unique digital tokens on the blockchain.

Byzantine fault tolerance

Byzantine fault tolerance (BFT) is the ability of a system or network to continue functioning even if some of the nodes or computers are faulty or malicious.

The importance of blockchain terminology

Blockchain is filled with complex ideas, but learning the terminology helps make sense of it all. Knowing the right terms allows you to follow discussions, understand security risks, and see how blockchain impacts everyday life.

Spot security red flags

Knowing what “hash function” or “public ledger” means can help you understand how secure a blockchain is — and where it might be vulnerable.

Talk tech with confidence

Whether you’re reading about crypto or discussing decentralized apps, understanding the vocabulary helps you stay informed.

See the bigger picture

Blockchain isn’t just about coins — it’s about identity, ownership, and trust online. Learning the terms gives you a clearer view of how it all connects.