Proof of authority

Proof of Authority (PoA) is a consensus mechanism utilized in certain blockchain networks. In PoA, validators are selected based on their identity and reputation, rather than through resource-intensive computations. These validators are typically chosen due to their authority or position within a network. PoA aims to achieve high throughput and fast transaction speeds while maintaining a level of centralization in network management. It is commonly used in private or consortium blockchains where consensus efficiency and known validator identities are prioritized.