What Is Bitcoin DeFi?
DeFi, short for Decentralized Finance, refers to financial services like lending, trading, and yield farming that operate without traditional intermediaries by leveraging blockchain technology and smart contracts. Bitcoin DeFi projects are those that deliver DeFi services based on Bitcoin or within its ecosystem, such as BTC-collateralized lending, cross-chain bridges, and decentralized lending protocols. Currently, about 15 active DeFi projects exist in the Bitcoin ecosystem.
While most DeFi activity still centers on Ethereum, Bitcoin’s ecosystem is rapidly exploring new opportunities—using BTC’s high liquidity and security to enable DeFi applications.
Latest Developments: Three Key Projects to Watch
Here are three recent developments to keep you up to date on Bitcoin DeFi:
- BitcoinOS (BOS) raises $10 million: BitcoinOS secured $10 million in funding led by Greenfield Capital. The project aims to build a programmable layer on Bitcoin and has already achieved the first zero-knowledge proof verification on its mainnet. This indicates that the Bitcoin ecosystem is moving toward programmable financial tools, not just value storage.
- Build on Bitcoin (BOB) connects BTC to 11 major blockchains, unlocking liquidity: BOB Gateway bridges native BTC to 11 blockchains (including Ethereum, Avalanche, and Base) using LayerZero’s wBTC.OFT standard. Nearly 15,000 dApps can now directly access BTC liquidity. This means BTC can be used more easily for DeFi activities like lending, trading, and staking.
- New funding round: BOB raises another $9.5 million: BOB received an additional $9.5 million in strategic investment, bringing total funding to about $21 million. For newcomers, active fundraising is often a sign of a dynamic ecosystem and credible teams.
Note a major risk event: The ALEX project suffered an exploit due to a vulnerability, leading to losses of around $14 million. This incident demonstrates that DeFi projects in the Bitcoin ecosystem still face security and technical risks.
Why Is Bitcoin DeFi Worth Your Attention Now?

Image: https://www.gate.com/trade/BTC_USDT
- Bitcoin price action: When BTC’s price is high and market interest increases, its DeFi ecosystem tends to attract more attention.
- Strong expansion trends: Integrations like BOB’s cross-chain links and multi-chain support show Bitcoin is evolving from “store of value” to “financial infrastructure.”
- Still a small sector with major growth potential: There are far fewer DeFi projects on Bitcoin than on Ethereum (about 15 projects), offering potential first-mover advantages for long-term participants.
- Risk and opportunity go hand-in-hand: Despite the potential, ongoing challenges with technology, compliance, and cross-chain bridges remain. Newcomers should proceed cautiously.
Simple Tips for Beginners
If you’re new to DeFi and interested in the Bitcoin ecosystem, consider following these steps:
- Start by understanding BTC fundamentals: how to buy, store, and monitor its price volatility.
- Study cross-chain and wrapped BTC concepts, such as wBTC and wBTC.OFT, which enable BTC to be used in DeFi through bridging mechanisms.
- Focus on relatively stable projects, such as BOB and BitcoinOS mentioned above—but always conduct thorough research and review risk disclosures.
- Manage your investment size and stay within your risk tolerance. The technology is still evolving, and significant unknown risks remain.
- Stay updated with news and ecosystem developments, such as fundraising rounds, protocol upgrades, and security incidents, as these can significantly impact project development.