Solana staking rewards are changing. Yields are dropping, and investors are looking for new ways to keep returns sustainable. Huma and Splyce built one. They launched SOLMATE, an innovative decentralized exchange-traded fund (dETF) that pairs liquid staking with real-world cash flows. It's a USDC-denominated multi-yield dETF designed to optimize capital efficiency and risk-adjusted returns. It integrates JupSOL and PayFi Strategy Token (PST). This dual-yield structure offers diversification and stability, enabling investors to maintain upside exposure while mitigating volatility. SOLMATE is fully permissionless and integrates with Solana’s leading DeFi protocols. This provides deep liquidity, frictionless access to decentralized money markets, and a robust portfolio management framework for both retail and institutional investors. Huma is proving that payment financing unlocks sustainable yield for investors when traditional staking incentives shrink.