A web-based tool that allows users to view and search the contents of a blockchain in real-time. It provides detailed information about blocks, transactions, addresses, and the overall health of the blockchain network. Users can track the status of specific transactions, see the latest blocks added to the blockchain, and explore historical data. Blockchain explorers also display various metrics such as transaction fees, confirmation times, and mining difficulty. By offering a transparent view into the blockchain, these explorers are essential for users, developers, and researchers to monitor and analyze blockchain activity.