A hash is the output result you get after running a hashing algorithm. Each hash comprises a unique, fixed-length string that is encrypted and secured via arbitrary data. Hash functions play a crucial role in blockchain technology, ensuring quick processing of data in the distributed ledger.

Hashes are essential while using block explorers since it facilitates quick extraction of information for addresses and transactions. Hashing is considered one of the most secured data transfer practices, given the original information is inaccessible without the hash key.