Proof-of-Work vs Proof-of-Stake

Consensus is a general agreement among individuals, like agreeing on which restaurant to go to for dinner among a group of friends. Reaching a consensus among a blockchain’s participants is a fundamentally serious business as it is run by distributed individuals. Proof-of-Work (PoW) and Proof-of-Stake (PoS) are two types of consensus mechanisms. Before diving into them, let’s take a flash review of the anatomy of a blockchain.