Request a conversation
Bitcoin self-custody for families
21 Fruits helps you set up, verify and organise your Bitcoin self-custody for the long term. Every step is clearly explained, and every decision is yours. Your keys remain yours.
Available today: articles and an initial personal conversation. Personal support begins with a pilot for a small number of families.
What matters
Holding your own Bitcoin means you no longer rely on an exchange or a bank to reach your wealth. Other dependencies remain: devices, backups and what particular people know. Whether your family can still act when a device fails, a document becomes outdated or you can no longer act yourself depends on how well you have planned for it.
Our services
Planned for the pilot: what happens, what you receive – and what is deliberately left out.
We look at your situation, the level of protection you need and the people involved, then propose a suitable set-up – from a single wallet to several keys held in separate locations. The decision is yours.
Together, we test whether access can be restored in agreed failure scenarios – for instance, if a device is lost or a storage location cannot be reached.
Together, we prepare documents that show authorised relatives where to start, which steps apply and when they will need support.
Day to day. We show you how to verify receiving addresses and payments on your own device. Regular reviews of your set-up are planned for the pilot.
Buying, spending, selling and tax. 21 Fruits does not carry out these steps itself. We explain the options, give you transparent criteria for choosing a provider and help make sure your Bitcoin arrives in your own custody, verified. You choose the provider; we receive no referral commissions.
Family and succession
Your arrangements should withstand device failure, absence and the passage of time. That requires instructions your relatives can find, understand and rehearse – without revealing the secrets that protect your wealth.
A backup you have never rehearsed is an assumption.
Your contact
Engineer · Founder of 21 Fruits
Felix Brandt founded 21 Fruits, leads its development and is your personal contact. He approaches Bitcoin security as an engineer would: making assumptions explicit, thinking failures through in advance, rehearsing procedures and recording the results. Where evidence is missing, the process stops rather than guesses.
What you can rely on
21 Fruits does not hold Bitcoin, receives no private keys and signs no transactions. We never need your recovery words. Together, we verify which parts of your arrangements work under the agreed conditions – and where action is needed.
✓Your keys remain yours
✓We recommend – you decide
✓Verified, not just documented
✓No referral commissions
✓No trading, no price forecasts
For whom
Who hold their own Bitcoin and want to be sure it reaches the right people, even in an emergency.
Who want business and private Bitcoin holdings kept separate, traceable and in the hands of more than one authorised person.
Whose clients hold Bitcoin and who want sound technical support to complement their own work. For families & advisors →
Analysis & articles
Calm, well-sourced explanations for families, owners and advisers – from the basics to succession.
Bitcoin in five minutes →Custody and succession · Part 2
A succession plan can transfer authority. It does not automatically transfer the ability to verify, operate and recover a self-custody system.
Read the article →Pilot phase
In the pilot, we will personally support a small number of families. Get in touch, or register your interest without obligation.