BTCfi (Bitcoin DeFi)
BTCfi is the broad category of decentralized finance applications built directly on or around Bitcoin — including Bitcoin Layer 2s, restaking protocols, lending markets, and DEXes that use BTC (not wrapped versions on other chains) as their primary asset.
✦ Key Insight
Bitcoin holds the largest market cap in crypto, but most of it has historically sat idle. BTCfi creates ways for traders and holders to earn yield, borrow against, and trade native Bitcoin without surrendering custody to centralized lenders — a category that catastrophically failed in 2022.
✕ Common Misconceptions
Treating all "Bitcoin DeFi" the same when trust models vary from trust-minimized (Babylon) to fully custodial (most "wrapped BTC" on EVM chains).
Chasing the highest yield without understanding which validators or operators control your collateral.
Ignoring slashing or smart-contract risk.
Detailed Explanation
How It Works: Different approaches power BTCfi: Bitcoin L2s like Stacks and Rootstock add programmability; restaking protocols like Babylon let BTC secure other chains and earn yield; sidechains and rollups bridge BTC into smart-contract environments. Each has its own trust assumptions.
FAQs:
Is BTCfi safe? Safer than centralized lending in many cases, but smart-contract and bridging risk apply.
Do I lose custody of my BTC? Depends on the protocol. Trust-minimized approaches keep custody; wrapped approaches do not.
In Practice
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