Difference between Proof-of-Stake and Proof-of-Work
Sno Proof-of-Stake Proof-of-Work
1 Block creators are called validators Block creators are called miners
2 Participants must own coins or tokens to become a validator Participants must buy equipment and energy to become a miner
3 Energy efficient Not energy efficient
4 Security through community control Robust security due to expensive upfront requirement
5 Validators receive transactions fees as rewards Miners receive block rewards
Video : Basics
Question / Answer

Vitaly Dmitrievich Buterin, better known as Vitalik Buterin, is a Russian-Canadian computer programmer, and co-founder of Ethereum. Buterin became involved with cryptocurrency early in its inception, co-founding Bitcoin Magazine in 2011.
Bibliography/References
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