A blockchain node is a computer that connects to a blockchain network, maintains a copy of the ledger, and validates transactions to ensure the network's security and decentralization.
TYPES OF BLOCKCHAIN NODES
FULL NODE: Stores the entire history of the blockchain, allowing it to
fully validate transactions.
LIGHT NODE: Downloads only a portion of the blockchain data, verifying
transactions with less information
IMPORTANCE OF NODES
Nodes play a special role in the functioning of the blockchain technology by:
1) Maintaining Consensus: They ensure that all copies of the blockchain are synchronized and agree on the current state of the ledger.
2) Validating Transactions: Nodes check the validity of transactions before they are added to the blockchain, preventing fraud and double-spending.
3) Decentralization: By distributing the network's operations across multiple nodes, blockchains eliminate the need for a central authority,
enhancing security and resilience.
Understanding nodes is fundamental to grasping how blockchain technology operates and its applications in various fields.
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