An Archival Node is a type of full node in a blockchain network that stores the entire history of transactions and states from the blockchain. Unlike standard full nodes that may only store the most recent blocks, archival nodes keep data from every block ever created, allowing them to provide a comprehensive view of the blockchain.These nodes are essential for applications that require detailed historical data, such as analytics platforms or services that depend on auditing or verifying past transactions. Archival nodes can answer more complex queries since they can access older data without needing to reconstruct it from the current state.However, running an archival node requires significant storage space and resources due to the large volume of historical data. This makes them less common than standard full nodes, which are adequate for most users who want to validate transactions and blocks without needing the full history. Overall, archival nodes enhance the functionality and accessibility of blockchain data, supporting various applications that demand deep insights into the network’s history.