Proof of History (PoH) is a method used to verify the passage of time between events on a blockchain. Instead of requiring all nodes to agree on the order of transactions, PoH provides a way to create a historical record that proves that an event has occurred at a specific moment.This is achieved through a cryptographic function that generates a unique hash for each transaction along with timestamps. These hashes are linked together in a sequence, creating an immutable timeline. This means that anyone can verify when a particular transaction took place.By using PoH, networks can process transactions more quickly and efficiently. It reduces the amount of communication needed among nodes, allowing them to trust the timestamped record without needing to exchange extensive data. This method enhances scalability, making it easier to handle a higher volume of transactions.Overall, Proof of History simplifies the verification process while maintaining security, enabling faster consensus and improving the overall efficiency of the network.