Secured Finance is a decentralized platform offering an over-the-counter (OTC) trading interface for fixed-income investments and hedging. The platform standardizes loans and bonds as trading products, enhancing liquidity and price discovery. It features an on-chain order book system, zero-coupon bond standard, and fixed maturity standard. Secured Finance aims to tackle market fragmentation and inefficiencies, supporting a broad range of digital assets with smart-contract-based collateral management.