What is Proof of Stake?

Proof of Stake is a consensus mechanism where validators lock up cryptocurrency as collateral to secure the network. It replaces energy-intensive mining with economic incentives, rewarding honest validators with new tokens and fees.

How does Proof of Stake work?

Users stake a minimum amount of tokens to become eligible validators.
The protocol randomly selects a validator to propose the next block, weighted by stake size.
Other validators attest to the block's validity.
Honest validators earn rewards; cheaters or offline validators get "slashed."

Why does Proof of Stake matter?

It uses 99 percent less energy than proof-of-work and lowers the barrier to network participation, replacing expensive hardware with capital staking.

Key features of Proof of Stake

Security through economic collateral rather than computation
Slashing penalties for malicious or negligent behavior
Smaller holders can participate via staking pools or delegation
Faster finality and higher throughput than proof-of-work

Examples of Proof of Stake

Ethereum switched to Proof of Stake in 2022 via "The Merge." Users can stake ETH through services like Lido to earn roughly 3 to 5 percent annually.