Blockchain in Two Minutes

What is the blockchain and how it can be used for good

Photo by Steve Johnson on Unsplash

At its heart, a blockchain is a linked list. Each item in the list — called a block — contains three pieces of information: a timestamp, the data you’re trying to store in the block, and a hash of the previous item on the list. This links each block together by reference and creates a “chain” of sorts (hence, blockchain)…