Proof of Authority

Proof of Authority (PoA) is a blockchain consensus mechanism where a select group of trusted validators are authorized to create new blocks and verify transactions. Unlike mechanisms that rely on energy-intensive processes like mining, PoA leverages the identity and reputation of these validators, making the system faster and more efficient. It's often used in private or permissioned blockchains where participants are known and trusted, ensuring security through accountability. Essentially, PoA prioritizes trust and reputation over computational work to maintain a secure, efficient, and reliable blockchain network.