Block Explorers are like search engines for blockchains.

Public blockchains (distributed ledgers) generate a plethora of data, but how are we to make sense of it all and turn insights into actions? Block Explorers. Block explorers are a web tool that provide detailed information about blocks, addresses, and transaction meta data within a blockchain. As advanced uses of blockchain technologies become more prevelant, use of block explorers will follow suit to track valuable digital assets, smart contracts, and smart devices connected to the Internet-of-Things.