PAG (Play A Game, Tianyi) is a DApp developed on the OFBANK public blockchain. Its a platform where users can freely initiate event predictions. Due to its decentralized nature and the openness and transparency of information, anyone on the platform can oversee any piece of data in the transaction process. This fundamentally solves issues of misconduct and user losses due to information asymmetry in prediction markets. PAG is the utility token for the Tianyi project and is consumed across all application scenarios within the project.