Research on DeFi oracles focuses on providing secure, reliable, and tamper-resistant mechanisms to supply off-chain data to decentralized finance platforms. Oracles act as bridges between blockchain smart contracts and real-world information, such as asset prices, interest rates, and external events, enabling automated and accurate contract execution. Studies investigate decentralized oracle networks, consensus protocols among oracle nodes, and cryptographic techniques like threshold signatures and verifiable random functions to enhance data integrity and prevent manipulation. Research also addresses challenges related to latency, data accuracy, and incentive mechanisms to encourage honest reporting. Overall, robust DeFi oracle systems are essential for ensuring transparency, trust, and resilience in decentralized financial ecosystems.