Today, we’re proud to announce that Firefish has secured $1.8 million in seed funding, led by Braiins — the world’s oldest Bitcoin mining pool and a pioneer in mining software and hardware—alongside Prague-based VC firm Miton. This milestone propels our mission to make Bitcoin-backed lending secure, trust-minimized, and globally accessible.

Redefining lending with Bitcoin at its core

At Firefish, we’re not just layering Bitcoin onto traditional finance — we’re rebuilding lending from the ground up using Bitcoin's core principles.

Our peer-to-peer Bitcoin lending marketplace lets holders borrow fiat or stablecoins against their Bitcoin without custodians or tax-triggering sales. Bitcoin as collateral is locked in on-chain escrow via multi-signature contracts, and loans settle directly between users — no rehypothecation, no middlemen.

As our CEO Martin Matejka puts it, “Firefish is where serious capital meets Bitcoin-native infrastructure.”

The results speak for themselves:

• $100M+ in transaction volume

• 10,000+ users

• Nearly 1,000 BTC in escrowed collateral

In March 2025, Firefish recorded triple-digit month-over-month growth, fueled by thousands of Bitcoiners seeking liquidity and yield-hunting investors attracted by market-driven rates, transparent collateralization, and direct user control.

Instant Bitcoin-backed loans, global reach

Our newly launched instant USDC loan option means borrowers worldwide—including the U.S.—can now access stablecoin liquidity in as little as 15 minutes.

Firefish supports fiat and Bitcoin-backed loans in EUR, CZK, CHF, and USDC. Borrowers can apply through a seamless, KYC-enabled process.

Get a loan now

Meanwhile, institutional investors and high-net-worth individuals can deploy capital at scale and earn competitive yields, with traditional fund structures on the horizon to broaden access further.

Real-world use case: Braiins, our lead investor, recently borrowed €400,000 against 8.75 BTC using Firefish to fund operations — all within 24 hours.

“With Firefish, the rules are enforced by code, not third-party trust,” said Eli Nagar, Braiins’ CEO. “This partnership also opens doors for Bitcoin miners to purchase Braiins hardware using Firefish-powered loans, integrating our platform into their product suite.”

Czech Republic's Bitcoin legacy continues to grow

We are proud to join Prague’s storied Bitcoin ecosystem — home to SatoshiLabs, General Bytes, Confirmo, Coinmate, and now Braiins. Together, we’re shaping the future of Bitcoin finance.

Last year, we co-published Bitcoin: The Ultimate Collateral with Braiins, exploring how lending is Bitcoin’s next frontier. Today, we’re building on that that vision, working towards positioning Bitcoin at the core of modern finance.

What’s ahead

With this $1.8M raise, we’re accelerating:

• Global expansion of our Bitcoin loan platform

• Scaling Firefish Prime, our institutional lending program

• Enhanced product development and user experience

Thank you to Braiins, Miton, and our incredible community for making this possible. Dive into the details in our press release (link) to learn more.

Get started here

The Firefish Team