Proof-of-History (PoH) is a unique consensus mechanism used to enhance the efficiency and speed of blockchain networks. It serves as a cryptographic clock, allowing participants to verify the order of events or transactions without relying heavily on timestamps.In PoH, each event is hashed to produce a unique output that links it to previous events. This creates a chain of verifiable histories that anyone can check, reducing the time and resources needed to reach consensus. By establishing a clear timeline, PoH allows validators to process transactions in parallel. This makes the network faster and more scalable compared to traditional methods, where transactions are often processed sequentially. Overall, Proof-of-History improves the performance of blockchain systems by providing a reliable way to determine the order of actions, thus facilitating quick and efficient updates to the shared ledger.