Node software refers to the programs that run on computers making up a network for a particular blockchain. These nodes are essential for maintaining and validating the blockchain’s data and transactions.When someone runs node software, their computer becomes a part of the network. It downloads and stores a copy of the entire blockchain, allowing it to perform operations like verifying new transactions and blocks. This helps ensure the integrity and security of the blockchain.There are different types of node software depending on what role the node plays. Full nodes store the complete history of transactions, while light nodes only keep parts of the blockchain, relying on full nodes for most information. Some nodes participate in the consensus process, helping to confirm transactions and add new blocks to the chain.Running node software can contribute to the decentralization of the network and improve resilience against attacks, as it distributes control across numerous participants rather than a single point. Additionally, those who operate full nodes often receive rewards, especially in networks that utilize a proof-of-stake mechanism.