Bitcoin is changing how people save.
We are building the financial platform for it.

– Daniel Winklhammer, CEO & Co-Founder

21bitcoin Founders Dominik Seibold and Daniel Winklhammer

Why 21bitcoin exists

Bitcoin deserves more than just a trading app: For more and more people, Bitcoin is becoming a long-term component of their wealth. Yet many services are still geared toward short-term trading, are unnecessarily complex, or force users to choose between convenience and control.

21bitcoin was founded to change that.

We combine the simplicity of modern financial apps with European regulation, professional infrastructure, and one of Bitcoin's most important features: the ability to take control yourself.

We don't want to make Bitcoin more complicated. We want to build great financial products around Bitcoin.

100,000+

Users trust 21bitcoin

4.8

In the App Stores

$700M+

Invested via 21bitcoin

Our principles

Bitcoin only: We focus exclusively on Bitcoin. No altcoins, no token trends, and no products just because they are currently getting attention.
This focus allows us to align our entire technology, regulation, and product development with a single network.

Simplicity without loss of control: Bitcoin doesn't have to be complicated.
With 21bitcoin, you can buy and save Bitcoin as easily as with a modern finance app – while still deciding for yourself how you want to store it.
Professional custody or your own wallet: The choice remains yours.

Regulation instead of offshore
: Financial infrastructure requires clear rules and responsibilities.
21bitcoin is supervised as a Crypto Asset Service Provider under MiCAR by the Austrian Financial Market Authority and is building its infrastructure within Europe.

Our vision

Our goal is to build a leading European financial platform centered around Bitcoin.
A platform that supports people for years to come: with buying and saving, secure storage and self-custody, taxes and reporting, and managing larger Bitcoin holdings.
And over time, with additional financial services that meaningfully integrate Bitcoin into the existing financial system.

Not more crypto products. But better financial products centered around Bitcoin.

Why Bitcoin

An open, global network

Bitcoin is based on an open protocol and is not operated by any single company or government. The network's rules are transparent and viewable by anyone in the world.

21 million

The maximum supply is capped at 21 million bitcoin by the Bitcoin protocol. New bitcoin are issued according to a transparent and predictable schedule.

Self-custodial

Bitcoin allows you to self-custody and transfer your wealth – without having to rely permanently on a central custodian.

‍For us, Bitcoin is not just one product category among many. It is the reason 21bitcoin exists.

21bitcoin Coins
21bitcoin Wallet Shield Card

We are building 21bitcoin for the decades to come

If you are building a long-term Bitcoin position, you should know who you are dealing with and how the underlying infrastructure works.

MiCAR-regulated

21bitcoin is authorized as a Crypto Asset Service Provider under MiCAR and is supervised by the Austrian Financial Market Authority (FMA).

Professional Bitcoin custody

We use a combination of hot, warm, and cold wallets for custody. For the technical storage of cold wallet keys, 21bitcoin partners with BitGo Europe.

German banking infrastructure

For Euro balances, you will receive a personal virtual IBAN via VR Bank Bayern Mitte – a German cooperative bank and strategic shareholder of 21bitcoin.

Self-Custody

You can transfer your Bitcoin to your own wallet at any time and take full control of your private keys.

Our leadership team

21bitcoin is built by 30 experts from the worlds of finance, tech, and compliance. Meet the people setting our course.

Daniel Winklhammer
CEO

Daniel is responsible for strategy, product, and partnerships at 21bitcoin. Prior to founding the company, he worked on technology and digitalization projects in the financial and corporate sectors.

Dominik Seibold
CTO

Dominik is responsible for the technology and technical architecture at 21bitcoin and has been developing the platform together with the engineering team since its inception.

Clemens Jirasek
Head of Marketing & Growth

Clemens is responsible for our educational content, brand, growth, and the positioning of 21bitcoin in Europe.

Help us build the future of Bitcoin in Europe

We are a team of experts in technology, finance, compliance, product, and Bitcoin—united by a single goal: to build financial products that make Bitcoin more accessible without compromising its fundamental properties.

Our journey

2026

21bitcoin becomes a Bitcoin financial platform

Over 100,000 users have now invested more than €600 million through 21bitcoin. At the same time, the platform is expanding from buying and saving to include private services, professional wealth management, and other Bitcoin-related financial services.

Together with VR Bank Bayern Mitte and Sopra Financial Technology, 21bitcoin is also working on a pilot project for Bitcoin-backed loans.

21bitcoin with SOPRA Financial GmbH and Volksbank Raiffeisenbank Bayern Mitte eG

2025

MiCAR authorization by the FMA

FIOR Digital receives authorization as a Crypto Asset Service Provider under MiCAR from the Austrian Financial Market Authority—the regulatory foundation for 21bitcoin's further European expansion.

21bitcoin MiCAR CASP License

2024

Partnership with FC Red Bull Salzburg

21bitcoin becomes a partner of FC Red Bull Salzburg, bringing Bitcoin to an even broader audience in Austria and Europe.

21bitcoin FC Red Bull Salzburg Partnership

2023

A German bank invests in 21bitcoin

VR Bank Bayern Mitte invests €2.1 million in 21bitcoin and becomes a strategic shareholder—a major step in connecting Bitcoin with established European financial infrastructure.

Volksbank Raiffeisenbank Bayern Mitte investiert 2,1 Millionen Euro in 21bitcoin

2022

21bitcoin goes live

The 21bitcoin app launches, making buying and holding Bitcoin significantly easier for customers in Europe.

Smartphone steht lässig auf einer silbernen metallischen Oberfläche und zeigt eine Bitcoin-App mit den Optionen Login und Registrieren.

2021

FIOR Digital is founded

FIOR Digital GmbH, the company behind 21bitcoin, is founded, creating the regulatory and organizational foundation for the platform's further development.

21bitcoin Team

2020

The idea is born

Daniel and Dominik start in Salzburg with a simple idea: to make Bitcoin more accessible, secure, and trustworthy. The two have known each other since their time together at HTL Salzburg.

21bitcoin Founders

We are just getting started

Buying Bitcoin was the first step. Today, we are continuing to build 21bitcoin into the platform for your entire Bitcoin wealth—from saving and custody to private services and new financial products centered around Bitcoin.

From your first Bitcoin to long-term Bitcoin wealth.

Bitcoin Coin21bitcoin Silver Emoji Coin

Join over 100,000 satisfied users

★★★★★
4.8/5 in the App stores
Over €600 million in cumulative Bitcoin trading volume
Holding period tracker 🇩🇪 & tax-optimized in 🇦🇹