A blockchain is a growing list of records, called blocks, which are linked using cryptography. Blockchain was invented by a person using the name Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the cryptocurrency bitcoin. It works with Blocks, where as spreadsheet works with “rows” and “columns”. A block in a blockchain is a collection of data. Blockchain is a distributed ledger, which simply means that a ledger is spread across the network among all peers in the network, and each peer holds a copy of the complete ledger. At Brainy n Bright, we help the professionals learn and earn proper certifications in Blockchain technology through the course of the training.