Choosing between Strike and Unchained requires evaluating total cost, custody risk, and which platform aligns with your borrowing profile. Strike uses custodial (proof-of-reserves for 50+ btc) with 7.49%–10.5% APR, while Unchained uses collaborative multisig (2-of-3) with 14%–15% APR.
On a $500,000 loan, Strike costs $47,500 in the first year versus $80,000 at Unchained, a difference of $32,500. Part of Unchained's higher cost comes from its 2% origination fee, which adds $10,000 upfront on this loan size. Strike charges no origination fee, so the only cost is interest.
The custody difference is material. Unchained uses collaborative multisig (2-of-3), which means your Bitcoin requires multiple key holders to coordinate, reducing single-point-of-failure risk. Strike uses custodial (proof-of-reserves for 50+ btc). In a platform insolvency scenario, Unchained borrowers' collateral is protected by the multisig architecture, while Strike borrowers may face creditor claims.
Strike is the better fit for borrowers who are borrowing $10,000 or more and are comfortable with custodial lending. Unchained is the better fit for borrowers who are borrowing $150,000 or more and want collaborative key control.
Key details to be aware of: Strike: 0.79% fee if repaying with BTC collateral, 0. Unchained: Commercial/institutional only since Jan 2024. Uses CTP ratio (inverse of LTV).