Ripple operates on its own blockchain, known as the Ripple Protocol Consensus Algorithm (RPCA) or simply "Ripple's blockchain". However, it's important to note that Ripple does not use a traditional blockchain architecture. Instead, it employs a distributed ledger technology that allows for faster and more efficient cross-border payments. Ripple's blockchain is designed to facilitate the transfer of value between parties, particularly in the context of international money transfers. The native cryptocurrency of Ripple's blockchain is XRP, which is used as a bridge currency to enable fast, low-cost transactions between different currencies. Ripple's blockchain is distinct from other blockchain networks like Bitcoin or Ethereum, and its architecture is optimized for the specific use case of cross-border payments.