What chain does XRP use?

Could you kindly elaborate on the blockchain technology that XRP utilizes? I'm particularly interested in understanding the specific chain it operates on and how it differs, if at all, from other cryptocurrencies in terms of its architecture and functionality. Is XRP based on a unique blockchain platform, or does it rely on an existing one? Additionally, how does the choice of blockchain impact the performance and scalability of XRP transactions? Thank you for clarifying this matter.