Verifiable Random Function (VRF) is a cryptographic protocol that allows a user to generate a random value that can be verified by other parties. VRF works by using a private key and a public key to generate a random value, with the private key being used to create the value and the public key being used to verify it. The output of the VRF protocol is a proof that can be checked by other parties to ensure that the value was generated randomly and was not manipulated. VRF is often used in decentralized applications (dApps) to generate random values in a way that is verifiable and transparent.