In blockchain technology, Proof of Stake is an energy-efficient consensus mechanism used to validate transactions on a network. With minimal computational effort, a PoS system ensures network security by allowing validators or participants to stake their own digital coins as collateral. Network participants receive rewards, such as newly released tokens or a fraction of the transaction fees for validating blocks.
Known for its smart contracts, Ethereum replaced the Proof of Work (PoW) mining system in 2022. For block validation on its network, a randomly selected validator creates a new block and sends it to other nodes. If a validator proposes multiple blocks when they are expected to send one, the staked ETH may be destroyed. Honest validators can burn the culprit’s staked coins.
To verify transactions, PoW miners require a lot of processing power, meaning there is no energy efficiency. Ethereum’s switch to PoS reduced energy consumption, and the new approach has a positive environmental impact.
While a decrease in the computational power needed to process transactions in a PoS system is a notable benefit, the cost of running a full validator node is high.
