As decentralized finance (DeFi) matures, traditional banks and fintech firms are exploring how to integrate its powerful backend with user-friendly front ends. According to blockchain infrastructure provider Alchemy, firms like Fidelity, JPMorgan, Goldman Sachs, Robinhood, and Revolut are actively working on embedding DeFi capabilities behind compliant, seamless interfaces.
“The future is a DeFi mullet – TradFi in the front, DeFi in the back,” says Guillaume Poncin, CTO of Alchemy.
What Is a DeFi Mullet?
The term “DeFi mullet” refers to a financial product or service that appears traditional and regulated on the surface, but is powered by decentralized finance infrastructure under the hood.
This model allows institutions to:
- Offer automated lending and borrowing without smart contract complexity
- Provide one-click loans backed by digital or tokenized assets
- Maintain regulatory compliance while benefiting from DeFi liquidity and programmability
Real-World Use Case: Bitcoin-Backed Loans
A strong example is Coinbase, which lets users borrow cash by locking up Bitcoin — a privilege typically reserved for institutional investors. Alchemy envisions this model extended to traditional financial holdings, like:
- Money market funds
- Tokenized private equity
- Brokerage assets like Vanguard accounts
In this setup, a retail user could access a DeFi-powered margin loan against their assets — with a single click, and no technical interaction with smart contracts.
Why Big Finance Is Now Interested
Since the Trump administration signaled pro-crypto regulatory shifts, major financial players have been moving to bring assets on-chain. The shift isn’t about replacing traditional finance — it’s about enhancing it with blockchain’s speed, transparency, and automation.
“Firms want the utility of DeFi without exposing users to its complexity,” said Poncin.
Invisible Wallets and APIs – The Future of UX
Alchemy’s developer tools enable this smooth experience through smart APIs that allow:
- Invisible wallet infrastructure
- Automatic asset indexing and transaction routing
- On-chain integration for fintechs like Stripe or Nike
“Users no longer need to install clunky wallets like Metamask. It’s all invisible. The wallet is there, but the user never sees it,” Poncin emphasized.
Takeaway
The evolution of DeFi isn’t about turning everyone into a blockchain expert. It’s about putting powerful financial tools behind everyday interfaces. With big banks and leading fintechs exploring DeFi-backed services, we’re witnessing the fusion of regulated TradFi with decentralized innovation — all under the hood.
Disclaimer
This content is for informational purposes only and does not constitute financial, investment, or legal advice. Cryptocurrency trading involves risk and may result in financial loss.

