Pioneering the DeFi Mullet: Coinbase in the Front, DeFi in the Back
When fintech companies emerged, they succeeded in reimagining user experiences and distribution channels but remained constrained by traditional financial infrastructure. This created a fundamental limitation: innovative customer-facing solutions built on legacy backend systems. Blockchain technology and decentralized finance (DeFi) now offer an alternative.
Today's financial innovators can leverage DeFi infrastructure to build products that are more scalable, efficient, and transparent than before. Introducing the "DeFi Mullet": intuitive fintech interfaces at the front with decentralized financial infrastructure at the back.
Crypto-Backed Loans on Coinbase, Powered by Morpho
In January 2025, Coinbase launched crypto-backed loans powered by Morpho, marking one of the largest-scale DeFi integrations for Coinbase to date. The product gives millions of people in the U.S. (excluding New York) instant access to loans without the complexities of using DeFi directly.
The Coinbase app abstracts the blockchain itself, wallets, gas fees, asset wrapping, and more so users can seamlessly access USDC loans against BTC collateral. In the background, Morpho provides instant access to hundreds of millions in USDC liquidity with competitive rates and loan-to-value ratios.
Coinbase In The Front: A Seamless User Experience
By building on Morpho, Coinbase focuses on crafting an intuitive user experience that abstracts blockchain interactions. Coinbase crypto-backed loans use Coinbase Smart Wallet, Paymaster for gas paid in cbBTC, passkey authentication, Magic Spend for fund transfers, and operate on Base, a fast Ethereum L2.
Morpho In The Back: Open Financial Infrastructure
Morpho enables Coinbase to reduce operational overhead while making the product more accessible and transparent. The integration taps into the cbBTC/USDC market on Morpho's Base deployment. Smart contracts store collateral, match borrowing demand with USDC liquidity, and handle interest, accounting, and liquidations.
By design, Morpho is noncustodial — users maintain control over positions and can repay at any time.
Why Build On Morpho's Infrastructure
- Immutability — Morpho is governance-minimized; deployed markets cannot be retroactively altered, eliminating dependency risk for integrators.
- Open-Source Infrastructure — Smart contracts, APIs, and SDKs support custom lending use cases without building from scratch.
- Global Rails, Deep Liquidity — Integrators access existing onchain liquidity, avoiding cold-start problems.
- Security — Rigorous audits, formal verification, continuous monitoring, and a $2.5M bug bounty program.
- Transparency — Collateral, loans, interest rates, and repayments are verifiable onchain, unlike opaque CeFi lending platforms.
Building on Morpho allows financial applications to be more open, efficient, and resilient with significantly lower operational overhead for integrators.