XRP is a native digital asset based on the XRP Ledger (XRPL), designed to serve as a bridge currency for global cross-border payments, addressing settlement delays and high liquidity consumption issues under traditional correspondent banking models. This article analyzes how XRP reshapes payment cost structures through the On-Demand Liquidity (ODL) mechanism from three perspectives: technical architecture, token economics, and market evolution. It explores its long-term application potential in interbank clearing and central bank digital currency (CBDC) bridging, and reviews the evolution of pricing logic following regulatory clearance. XRP Payment Architecture: From Inventory to Service Liquidity Reconfiguration The global cross-border payment market is expected to surpass $25 trillion by 2027, yet the underlying infrastructure supporting this capital flow—the SWIFT network and correspondent banking system—remains rooted in design frameworks from the 1970s. A transfer from the United States to Mexico