Blockchain

Blockchain: A decentralized, distributed ledger that records transactions across multiple computers.

Cryptocurrency: A digital currency secured by cryptography, enabling peer-to-peer transactions.

Node: A computer connected to a blockchain that helps verify, store, and sometimes propagate data on the blockchain, maintaining the system's functionality and security.

Hash: A unique cryptographic fingerprint that represents a transaction on the blockchain, ensuring security, integrity, and immutability. Even the smallest data change produces a different hash.