A node is a computer that participates in a blockchain network by validating and relaying transactions. Nodes are essential for maintaining the decentralized nature of the blockchain, as they ensure that all participants have a consistent and accurate view of the network's state. There are different types of nodes, each serving a specific role in the network. Full nodes, for example, store the entire blockchain and independently verify transactions, ensuring that the rules of the network are followed. Lightweight nodes, on the other hand, store only a subset of the blockchain and rely on full nodes for transaction validation.
Running a node is a crucial contribution to the security and resilience of a blockchain network. By validating transactions and blocks, nodes help prevent double-spending, fraud, and other malicious activities. Nodes also play a key role in achieving consensus, as they work together to agree on the state of the blockchain and ensure that all participants are following the same set of rules. This decentralized validation process is what makes blockchain technology so secure, as it eliminates the need for a central authority to oversee transactions.
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In the context of Plena Finance, nodes are crucial for maintaining the decentralized infrastructure that supports the platform’s DeFi services. Whether validating transactions or bridging assets across different blockchains, nodes ensure that Plena’s ecosystem remains secure and operational without relying on centralized servers. The decentralized nature of nodes aligns with Plena's self-custodial wallet model, where users have full control over their assets without intermediaries
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