The Bitcoin network historically operates on its own secure, isolated layer-1 blockchain focused primarily on censorship-resistant monetary settlement, meaning native Bitcoin does not directly utilize Ethereum-based decentralized finance protocols. However, the integration of Bitcoin into DeFi has grown rapidly through wrapped tokens (such as Wrapped Bitcoin), layer-2 scaling solutions, sidechains, and cross-chain bridge technologies. These innovations enable Bitcoin holders to participate in decentralized lending, borrowing, and yield-generation applications across various interoperable blockchain ecosystems.