For WrapFi's oracle system, it is very important to assign random numbers for SSVs, in order to ensure absolute randomness and effectiveness. Only in this case can users trust the data uploaded by SSVs to be well-intentioned. To discourage the collusion of multiple SSVs, WrapFi will adopt a Verifiable Random Function (VRF) algorithm to ensure absolute security and verifiability in terms of the random number generation process, as well as the number's uniqueness. The VRF algorithm adopts elliptic curve encryption and zero-knowledge proof, thereby realizing the decentralization and security of the Oracle pricing mechanism.