What is a Proof of Stake (PoS) consensus algorithm? In PoS, validators are chosen to create a new block based on the amount of cryptocurrency they hold, known as "stake". The more stake, the higher the chances of being chosen to create a block. This approach is more energy-efficient and less vulnerable to 51% attacks compared to Proof of Work (PoW) algorithms.

PoS is a more sustainable and secure consensus algorithm compared to PoW, as it reduces energy consumption and makes it harder for malicious actors to dominate the network.