PoS
Public.icon
Proof of stake - Wikipedia
Created as an alternative to PoW
Stake means "betting"
One of the drawbacks of the predecessor PoW was environmental impact
Answer to criticism of PoW's environmental impact
Due to such circumstances, Ethereum has adopted PoS
This mechanism is called "Proof of Stake (PoS)". While PoW is supported by real-world hardware and energy consumption, the basis for the effectiveness of PoS is the perceived value of the cryptocurrency (in this case, Ethereum's Ether), which is a trade-off in game theory.
──
Several well-known blockchains, such as EOS and Cardano, use various elements of PoS. "The implicit assumption of Ethereum to transition to PoS in the future played a big role in advancing a different perspective from PoW. New developers and companies building their own blockchains began to immediately exclude PoW from their initial design proposals," says Laucke.
Can Blockchain Technology Really Address Its Energy Issues? | WIRED