Node refers to a fundamental component within a computer network or blockchain system. Nodes play important roles validating transactions, maintaining a copy of the blockchain ledger, and participating in network consensus.
Full nodes maintain a complete copy of the blockchain and lightweight nodes interact with the network through others. Nodes are integral to the functionality and decentralization of blockchain networks.
The consensus method employed by the majority of blockchain networks, including Bitcoin, is known as the "Nakamoto consensus." In order to authenticate and concur on the order of transactions in a secure and trustless manner, it depends on a decentralized network of nodes (computers) cooperating.
Non-fungible tokens are a type of cryptocurrency token that represent unique, indivisible digital assets. Unlike cryptocurrencies like Bitcoin (BTC) or Ether (ETH), NFTs are not interchangeable on a one-to-one basis.