SDK.finance x Fireblocks: The Gold Standard for Building Scalable Crypto & Fintech Products

For founders and developers, the challenge of launching a digital asset product isn’t just about writing code – it’s about navigating the immense complexity of secure custody, on-chain execution, and regulatory-grade accounting. Building these bridges from scratch is a high-risk, multi-year endeavor that often stalls innovation.

SDK.finance is changing the game. We are proud to announce our strategic integration with Fireblocks, the industry’s most trusted digital asset infrastructure.

By combining SDK.finance’s flexible core banking engine with Fireblocks’ elite security, we are providing the definitive toolkit for FinTech founders and crypto product owners. Whether you are building a crypto-native neobank or adding digital asset functionality to a traditional financial product, this integration provides the institutional-grade foundation you need to scale.

Who is Fireblocks?

Fireblocks is an institutional-grade platform that provides a secure infrastructure for moving, storing, and issuing digital assets. It acts as a specialized custody and execution layer that allows financial institutions to interact with the blockchain ecosystem safely.

Trusted by industry giants, Fireblocks powers the digital asset operations of global institutions like BNY Mellon, Revolut, Nubank, and Crypto.com. With over 1,800 clients and more than $6 trillion in digital assets processed, it is the benchmark for security in the space. By utilizing MPC (Multi-Party Computation) technology, Fireblocks eliminates the risks associated with traditional private key management, allowing you to move fast and scale with peace of mind.

Key Numbers

• $6T+ in digital assets secured and transferred via Fireblocks.

• 100+ Blockchains and thousands of tokens supported.

• 1,800+ Institutional customers globally.

• Zero compromises of MPC-secured keys.

“The core challenge for any crypto product is ensuring that what happens on the blockchain perfectly matches your internal records. With this integration, we’ve synchronized the two. SDK.finance acts as the master ledger for all balances and fees, while Fireblocks provides the secure MPC-based infrastructure for signing and custody. By decoupling the accounting logic from the signing layer, we’ve eliminated the risk of data discrepancies and created a developer-friendly environment where on-chain payments are as easy to manage as traditional fiat transfers.” – Pavlo Sidelov, CTO at SDK.finance

Integration Architecture: Built for Developers, Scaled for Founders

The synergy between SDK.finance and Fireblocks decouples blockchain complexity from your business logic, allowing your team to focus on the product experience while we handle the technical heavy lifting.

Developer-Friendly Crypto Infrastructure

We provide a framework where Fireblocks is responsible for secure custody and signing, while all balances, limits, fees, and workflows remain in a single, ledger-driven system. This significantly simplifies how teams launch and manage on-chain payment products.

On-chain Deposits with Ledger-Level Validation

Ensure absolute consistency. Our integration enables on-chain deposits to be processed with rigorous blockchain confirmation checks before balances are updated. This protects your ledger even in cases of delayed confirmations or blockchain reorganization.

Policy-Controlled On-chain Withdrawals

Execute with confidence. SDK.finance combines internal authorization, limits, and holds with Fireblocks’ secure on-chain execution and vault liquidity checks, providing a robust workflow for crypto PSPs and on-chain payments.

Vault-Based Treasury and Automated Rebalancing

Manage complex liquidity with ease. The integration works natively with Fireblocks’ vault hierarchy, allowing user and treasury vaults to operate within a single custody structure. Rebalancing and fund movements are handled automatically through predefined Fireblocks policies.

Off-chain Internal Asset Movements

Scale without limits. Internal transfers between accounts are executed entirely inside SDK.finance without invoking Fireblocks. This allows for high-volume asset movements without on-chain dependency, network fees, or additional custody operations.

Operational Control over Non-standard Flows

Maintain oversight of exceptional on-chain scenarios, including missing callbacks, conflicting transaction states, or delayed finality. This allows operations teams to resolve technical issues without compromising accounting accuracy.

Bridge the Gap Between Fiat and Crypto

For developers looking for a clean API-driven architecture and founders focused on rapid scaling, the SDK.finance and Fireblocks integration is the ultimate shortcut to a production-ready crypto product. We provide the “plumbing” so you can focus on building the next big thing in finance.

Ready to integrate crypto into your product roadmap? Contact the SDK.finance team to explore how this integration can accelerate your launch.