An Index Node is a specialized type of node in a blockchain network that focuses on storing and managing data efficiently for quick access. Unlike regular nodes that validate transactions and maintain a complete copy of the blockchain, Index Nodes primarily index transactions and blockchain states.These nodes create an organized structure that allows users and applications to retrieve data more rapidly. This can include transaction histories, account balances, smart contract states, and other relevant information. By indexing data, these nodes improve search speed and user experience, making it easier for developers to build applications that require fast access to blockchain data.Index Nodes play a significant role in enabling services like price feeds, exploration tools, and analytical platforms. They make it possible to filter and query information without needing to sift through the entire blockchain, leading to more efficient data handling and enhanced performance for various applications.