How Deblock Builds Europe's First Onchain Bank & Grew To 300K Users

Deblock is the first fully regulated (MiCA-compliant) onchain bank that merges a euro current account with a Visa debit card and a non-custodial crypto wallet. Users can hold euros, spend with a card, manage 100+ crypto assets in self-custody, and access DeFi yield vaults with no limits or lock-ins, all within a single secure environment.

Launched in 2024, Deblock has rapidly grown to serve over 300,000 clients across Europe and is backed by €60m in funding. To ensure its crypto services meet the rigorous standards of the banking sector, Deblock relies on the CoinGecko API for banking-grade market data and real-time crypto asset pricing.

Key Metrics At A Glance 

• Deblock leverages CoinGecko API to power accurate real-time valuations and stream live sub-second price updates for over 100+ crypto assets within its regulated banking app interface.

• This reliable data infrastructure enables Deblock’s 300,000+ users to securely deposit crypto directly alongside their fiat accounts.

• Since integrating CoinGecko API to power its core conversion features, Deblock has successfully processed hundreds of millions of euros across its euro-to-crypto and crypto-to-euro swap pairs.

The Challenge: Ensuring Banking Grade Accuracy In Volatile Crypto Markets

Building a regulated bank that natively supports crypto requires bridging two fundamentally different systems. While fiat banking relies on stability and precise ledgers, crypto markets are volatile and operate 24/7.

Deblock faced the technical challenge of integrating these distinct ecosystems into a cohesive platform. Users expect their crypto balance to be as accurate and accessible as their Euro checking account. To meet this expectation, the team needed a high-fidelity crypto market data solution that ensures real-time accuracy, allowing them to maintain the operational excellence of a fully regulated institution.

Why Deblock Chose CoinGecko API

Deblock chose CoinGecko API to power its crypto pricing infrastructure because it provides the granular historical data and extensive asset coverage required to match the speed and accuracy of traditional banking. As the world's most trusted crypto data authority, CoinGecko delivers reliable real-time pricing across a vast range of tokens, enabling Deblock to seamlessly connect everyday banking with the crypto economy. This ensures users can trust that the displayed portfolio values are accurate.

How Deblock Leverages CoinGecko API

To ensure users have immediate visibility into market movements, Deblock utilizes CoinGecko’s WebSocket API (specifically the CGSimplePrice channel). This streams sub-second price updates directly to the app interface, allowing users to stay informed of real-time price movements for Bitcoin and other assets before making decisions.

Deblock also relies heavily on CoinGecko API’s /coins/{id} endpoint, which serves as the core data source for presenting real-time price valuations across more than 100 supported assets. This endpoint powers pricing data for Deblock’s balance calculations, portfolio visualizations, and euro–crypto conversions, ensuring that valuations remain accurate regardless of the crypto asset, chain, or market conditions.

CoinGecko API’s pricing data powers Deblock's exchange feature, providing real-time crypto asset valuations for accurate euro-to-crypto and crypto-to-euro conversions.

Business and User Outcomes

Since integrating CoinGecko API, Deblock has provided its 300,000+ users with real-time pricing data for over 100+ crypto assets within its regulated onchain banking ecosystem. With accurate pricing from the world's most trusted crypto market authority, users confidently deposit and manage onchain assets on Deblock's platform directly alongside their fiat accounts. This trust has also translated into strong engagement with Deblock's most popular feature, the euro-to-crypto and crypto-to-euro swaps, which has delivered hundreds of millions in total swap transaction volume to date, with users consistently praising the feature’s simplicity and reliability.

"CoinGecko’s robust data infrastructure is the silent engine behind our portfolio visualizations, allowing Deblock to transform raw onchain data into clear, actionable insights for our users. Their accurate real-time pricing and historical depth enable us to build a seamless bridge between everyday banking and the crypto economy.”

What’s Next On The Roadmap?

Deblock is focused on advancing its vision to become the first fully onchain bank, supported by an ambitious product roadmap aimed at deepening the integration between fiat accounts and onchain functionality. Over the next year, the team plans to expand availability to additional regions as it brings its services to more European markets.

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This article was written in collaboration with Deblock team.