Blockchain & Infrastructure
Also: PoS, staking consensus
Proof of Stake PoS
A consensus mechanism where validators lock up (stake) tokens as collateral to propose and attest to blocks.
In Proof of Stake, validators are chosen to propose and vote on blocks proportionally to the amount of cryptocurrency they stake as collateral. Validators earn staking rewards for honest participation and face slashing (partial loss of stake) for provable misbehavior. PoS is dramatically more energy-efficient than Proof of Work. Ethereum's Merge in September 2022 transitioned it from PoW to PoS, reducing energy consumption by ~99.95%.
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