Proof of Stake vs Proof of Work

Proof of Stake (PoS) is a blockchain consensus mechanism where validators are chosen to create new blocks and verify transactions based on the amount of cryptocurrency they stake, rather than computational power.

Proof of Work (PoW) is a consensus mechanism where miners compete to solve complex computational puzzles by finding valid hash outputs, with the winner earning the right to add the next block and receive cryptocurrency rewards while securing the network through computational expenditure.