In essence, a block explorer serves as a comprehensive tool offering detailed analytics about a blockchain network from its inception at the genesis block. It functions as a search engine and browser, allowing users to access information about individual blocks, public addresses, and transactions associated with a specific cryptocurrency.
Beyond basic features, some block explorers provide real-time statistics, market charts, and extensive data on various aspects such as mining pools, pending transactions, network hash rate, rich list, block validators, orphan blocks, hard forks, and more.
Concerning pending transactions, block explorers prove beneficial for users awaiting block confirmations. For instance, individuals waiting for deposit or withdrawal confirmations on exchanges often use transaction IDs to track the real-time movement of their funds.
Depending on the blockchain type, block explorers can function as a centralized hub of information. Take the Ethereum blockchain as an example, where numerous ERC-20 tokens operate. Users can access data about these tokens by examining their smart contracts on platforms like Etherscan or other Ethereum block explorers.