A full node can be described as a dedicated computer that is responsible for implementing the entirety of the rules of any underlying blockchain network. It completely validates blocks and transactions on a blockchain network.
Understanding the Term
A full node is a program that validates transactions and blocks in a blockchain network. Almost all full nodes can support the network by accepting blocks and transactions from other full nodes. They validate the transactions and blocks first before relaying them to further full nodes. They do this by rejecting transactions and blocks that do not follow the consensus rules.
Full nodes can also serve lightweight clients in the following two ways. They can allow lightweight clients to transmit their transactions to the network. It also notifies them when a transaction affects their corresponding wallet. For instance, a Bitcoin full node can be run to support the Bitcoin network and use its wallet to store the user’s Bitcoin.
A full node is a computer in Bitcoin’s P2P network, which is responsible for hosting and synchronizing a copy of the entire Bitcoin blockchain network. Running a full node is one of the best methods to have full control, ensuring that all the rules of Bitcoin are being followed.