ソース:[1] OKX Pay's Role and Limitations in the PayFi Ecosystem (https://www.techflowpost.com/article/detail_2 ...)[2] What Is PayFi? Revolutionizing Finance With DeFi And RWA Integration | CoinGecko (https://vertexaisearch.cloud.google.com/groun ...)[3] Visa & Mastercard, Designing Next-Gen Payment Systems - Four Pillars (https://vertexaisearch.cloud.google.com/groun ...)