A short form of Proof of Stake. It’s a newer consensus relative to Proof of Work. And it helps validate transactions on the blockchain, keeping the system transparent, secure, and safe. The provision in a PoS ensures the creation of new blocks after block verification by other parties based on their stake size. Any invalidation leads to a loss (either all or part) of their stakes. The miners in this instance also get rewards for participating in the validation.
Examples of blockchains that use PoS include: