Doppler Finance is a DeFi protocol built on the XRP Ledger XRPL. It aims to provide yield-generating opportunities for XRP holders within the XRPL ecosystem, introducing a concept termed "XRPfi." The platform allows users to deposit XRP and other XRPL assets to earn yields, leveraging centralized DeFi (CeDeFi), DeFi, and real-world asset (RWA) sources. Doppler Finance offers services like liquid staking for XRPL sidechains and lending protocols, aiming to activate idle XRP by transforming it into productive assets. The platform also runs a Doppler Points (DP) campaign, rewarding early users based on deposit values.