PoS Mechanism

Definition ∞ PoS Mechanism, or Proof-of-Stake mechanism, is a consensus algorithm used by blockchain networks to achieve distributed agreement and validate transactions. Instead of relying on computational power like Proof-of-Work, PoS requires validators to stake a certain amount of the network’s native cryptocurrency. Validators are then selected to create new blocks and verify transactions based on the size of their stake and other factors. This method aims for greater energy efficiency and scalability.
Context ∞ The PoS mechanism is a widely adopted alternative to Proof-of-Work, particularly noted for its reduced energy consumption and potential for higher transaction throughput. Debates often surround the centralization risks associated with large stakers and the security implications of validator selection. Ongoing protocol upgrades and research continue to refine PoS designs to enhance decentralization and censorship resistance.