Introduction
Deblock is a French crypto-banking platform that merges traditional euro banking with self-custodied crypto wallets in a single app. Founded in 2022 by former Revolut and Ledger executives, Deblock is licensed by France's AMF and ACPR and offers users a French IBAN account, Visa debit card, instant SEPA transfers, and commission-free currency and crypto exchanges — all powered by non-custodial MPC wallet infrastructure from Dfns. Since launching in April 2024, Deblock has attracted over 300,000 users and raised €30 million in Series A funding led by Speedinvest to fuel expansion across Europe starting with Germany and Ireland.
Deblock set out to do something deceptively hard: let everyday users earn yield on euros and stablecoins without forcing them through the usual DeFi obstacle course of bridges, swaps, and reward tokens.
With Yield.xyz’s Optimized Allocator Vaults (“OAVs”) under the hood, Deblock launched Deblock Vaults—a one‑click, self‑custodial way to earn on EURC and USDC directly inside the Deblock experience.
Challenges
- Stablecoin yield required 7+ complex steps outside Deblock (on‑ramps, bridges, protocol UIs, manual compounding).
- Managing DeFi integrations internally would require ongoing work across bridging, routing, gas, and reward harvesting.
- Users often saw inflated APYs that depended on juggling multiple reward tokens, making “real yield” confusing.
- Deblock needed a yield engine that was reliable, automated, and invisible to the user.
Yield.xyz Solution
- Optimized Allocator Vaults: Unified routing, swaps, and auto‑compounding behind a single deposit action.
- Full Automation: Yield.xyz handled reward harvesting, conversion, and reinvestment—delivering a clean, single‑token return in EURC or USDC.
- Seamless Fiat & Crypto Flows: Users could deposit from fiat or existing stablecoins, while OAVs handled strategy selection and protocol execution.
- Blue‑Chip Strategies by Default: Deblock plugged directly into Morpho’s audited EURC and USDC vaults without building protocol‑level integrations.
Results & Impact
- Users now earn yield with one simple action, no bridges or manual steps required.
- Yield is shown as “True APY,” paid in the same token users deposit—clear, predictable, and auto‑compounded.
- Deblock avoided months of DeFi engineering work and ongoing maintenance.
- The product team can now focus on UX, while yield execution is fully automated by Yield.xyz.
“Our main mission at Deblock is to bridge TradFi with Crypto, and today we are taking a huge leap towards accomplishing this mission. Using DeFi protocols from reputable partners such as Morpho and Yield.xyz, we’re giving our customers the opportunity to put their idle cash to work with yield rates up to 6% a year.” — Deblock Team
Deblock introduced Vaults powered by Yield.xyz’s Optimized Allocator Vaults (OAVs) and Morpho integration, delivering one-click stablecoin yield on EURC and USDC with rates up to 6% annually. Users can earn directly from either fiat balances or existing crypto holdings, with OAVs handling all routing, incentive token compounding, and strategy execution behind the scenes. Within weeks, Vaults became Deblock’s most popular feature, proving that DeFi yield can feel as simple and seamless as a traditional savings product.
