Swiss
Self-Custody

Protect your Bitcoin. Now.

Protect your
Bitcoin

Self-Custody. Own your Bitcoin. No one but you can access your Bitcoin, not even us.

Offline Storage. Your Bitcoin is stored offline, protected from any online attacks.

Multi-Sig (coming soon). Every transaction must be signed by multiple users to prevent unauthorised access to your Bitcoin.

Made in
Switzerland

We are a Swiss Bitcoin company. Our beliefs are rooted in the Swiss traditions of discretion, stability and security. Our sole mission is to protect your Bitcoin.

Learn more

Self-Custody – The New Sovereignty

When you store your Bitcoin on an exchange or in a bank, they own and control it. Bitcoin was created to break free from these constraints and return financial sovereignty to the individual. By holding your private keys, you no longer have to trust banks or third parties. It is this principle of individual sovereignty and financial freedom that got us into Bitcoin in the first place. It is embedded in our DNA. It is the reason we developed the world's safest Self-Custody solution.

Pricing

We believe that everyone should be able to protect their Bitcoin and grow their wealth. That's why you can use all functions of Swiss Self-Custody free of charge up to a balance of $50,000.

Bitcoin balance
Up to $50.000
From $50.000
From $150.000
From $250.000
From $500.000
From $750.000
From $1Million
Service Fee
$0
0.85%
0.80%
0.70%
0.60%
0.55%
0.50%
Bitcoin balance
Service Fee
Up to $50.000
$0
From $50.000
0.85%
From $150.000
0.80%
From $250.000
0.70%
From $500.000
0.60%
From $750.000
0.55%
From $1Million
0.50%
accounts with balance higher than $50.000 have a minimum yearly fee of $500

FAQ

What makes Bitcoin so special?
Bitcoin is a decentralized digital currency, without a central bank or single administrator, that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries. Transactions are verified by network nodes through cryptography and recorded in a publicly distributed ledger called a blockchain.

The cryptocurrency was invented in 2008 by an unknown person or group of people using the name Satoshi Nakamoto. Its use as a currency began in 2009 when its implementation was released as open-source software. Bitcoins are created as a reward for a process known as mining. They can be exchanged for other currencies, products, and services.

Bitcoin is decentralized, thus:

• Bitcoin is limited to 21 million Bitcoins.

• Bitcoin does not have a central authority.

• The Bitcoin network is peer-to-peer; there are no central servers.

• The network has no central storage; the Bitcoin ledger is distributed.

• The ledger is public; anybody can store it on a computer.

• There is no single administrator; the ledger is maintained by a network of equally privileged miners. Anyone can become a miner.

• The additions to the ledger are maintained through competition. Until a new block is added to the ledger, it is not known which miner will create the block.

• The issuance of Bitcoin is decentralized. They are issued as a reward for the creation of a new block.

• Anybody can create a new Bitcoin address (the Bitcoin equivalent of a bank account) without needing approval.

• Anybody can send a transaction to the network without needing any approval; the network merely confirms that the transaction is legitimate.

• Bitcoin is pseudonymous, meaning that funds are not tied to real-world entities but to Bitcoin addresses. Owners of Bitcoin addresses are not explicitly identified, but all transactions on the blockchain are public.
What is self-custody?
"Not your keys, not your coins." Due to recent events, this statement has gained renewed importance as several crypto exchanges, and other institutions have stopped withdrawals out of the blue or gone bankrupt, wiping out their users' assets. In an effort to protect their assets, many Bitcoin users have asked themselves this question: What is self-custody?

Bitcoin self-custody enables users to have complete control of their assets. Self-custody is storing your Bitcoin safely on-chain without any third party having access to your coins at any point in time. In other words, owning your Bitcoin gives you full control over sending, receiving and storing your Bitcoins without relying on third parties. The assets are not accessible by banks or exchanges, and at the same time, owning your Bitcoins in self-custody means that you are solely responsible for your private key.

When you buy Bitcoin from a bank or an exchange and store them there, you do not own your Bitcoin. Custodians have total control over your assets because they own your Bitcoin private key. This comes with high risks.

These include the risk of theft of your Bitcoins by hackers if they are held on an exchange. If the crypto exchange is your counterparty, there is also the risk of fraud by employees or that the exchange holding your Bitcoins could run into liquidity difficulties. In fact, crypto lenders or exchanges could very well engage in rehypothecation, i.e. lending out your crypto assets in a chain of levers. This poses risks as the crypto-assets are not readily available when needed. Such risks became evident in 2022 when the crypto lender and exchanges such as Celsius or FTX stopped crypto withdrawals, transfers and transactions for customers.

To avoid these risks associated with holding crypto assets on central exchanges, it is advisable to hold all your Bitcoins in self-custody. We offer a self-custody solution that gives you complete control over your Bitcoin. With Numbrs, your Bitcoin really belongs to you and you alone. Only you own your private key, which is fully encrypted and secured in Switzerland. You are the sole owner of your Bitcoin and completely independent of any institutional or governmental influence.
What are the advantages of self-custody?
When you buy Bitcoin from a bank or an exchange and store them there, you do not own your Bitcoin. Custodians have total control over your assets because they own your Bitcoin private key. A private key is like a password that you can use to access and manage your Bitcoin. Anyone who knows your private key can make transactions without your permission. Exchanges and banks withhold your private key so that they can control your Bitcoin. In this case, your assets are exposed to severe privacy and security risks. In case of fraud, bankruptcy or hack, you risk losing everything.

With our self-custody solution, your Bitcoin belongs to you and you alone. Your private key is fully encrypted and secured in Switzerland, and you are the sole owner of your Bitcoin, granting you complete independence from banks, exchanges and third-party influences.

Nobody can decrypt your private key - not even us. This means you are the only person who can access your Bitcoin. Your private key will be safely stored and encrypted in Switzerland. Numbrs has developed the world’s safest self-custody solution.

When you open an account with us, it is completely private. When creating an account, you will encrypt your Private Key, therefore making it impossible for us to decrypt it. You are thus protected against any of the regular security and privacy vulnerabilities of a custodial service.

Numbrs Self-Custody

Bank or Exchange (Custodial)

Freedom. Send and store your Bitcoin without any restrictions.

Limitations. Restrictions on how you can use digital assets held in custody. For example, you are not able to send your Bitcoin to a third-party provider.

Full ownership. Only the Private Key constitutes Bitcoin ownership. With Numbrs, you hold it - no one else.

No Ownership. The custodial company holds your private keys and can access your Bitcoin at any time.

Low risk. You are in full control of your Bitcoin at any time.

Higher risk. Entrusting the custodial company with security and all the decisions relating to your assets.

Decentralized. Owning your private keys means no one can take your Bitcoin away from you. There is no institutional or governmental influence.

Centralized. Custodial services operate under government control. As such, they may be forced to freeze assets or disclose personal information to authorities.

Independence. Numbrs supports you in becoming a sovereign individual. We want our clients to be independent.

Dependence. Custodial services don’t want you to be independent, as they control your assets.

Numbrs Self-Custody

Freedom. Send and store your Bitcoin without any restrictions.

Full ownership. Only the Private Key constitutes Bitcoin ownership. With Numbrs, you hold it - no one else.

Low risk. You are in full control of your Bitcoin at any time.

Decentralized. Owning your private keys means no one can take your Bitcoin away from you. There is no institutional or governmental influence.

Independence. Numbrs supports you in becoming a sovereign individual. We want our clients to be independent.

Bank or Exchange (Custodial)

Limitations. Restrictions on how you can use digital assets held in custody. For example, you are not able to send your Bitcoin to a third-party provider.

No Ownership. The custodial company holds your private keys and can access your Bitcoin at any time.

Higher risk. Entrusting the custodial company with security and all the decisions relating to your assets.

Centralized. Custodial services operate under government control. As such, they may be forced to freeze assets or disclose personal information to authorities.

Dependence. Custodial services don’t want you to be independent, as they control your assets.

What is Offline Storage?
Offline Storage means that the server on which your Bitcoin is stored is completely offline. Offline storage is used to store digital currencies for the long term. By definition, offline storage is a form of storage that is never connected to the internet. It is the equivalent of storing assets in a bank vault.

Our offline storage solution enables you to store your Bitcoin offline in a state-of-the-art, highly-secure data centre in Switzerland. Our servers, which are never connected to the internet, are located in the high-security data centre of an “ISO 27001”-certified colocation partner in the heart of Switzerland.

We have developed the most secure Offline Storage solution in the industry. With our Offline Storage solution, your private key is protected against any form of online threat or hack. We are located in the most stable country in the world and utilize cutting-edge technology to ensure the safety and integrity of our clients’ Bitcoin holdings. The secure location of our servers makes them impenetrable. Our Offline Storage solution thus ensures our clients’ Bitcoin is safe from online threats and attacks.

Once you decide to store your Bitcoin offline, you simply and securely deposit your Bitcoin via an easy-to-navigate web dashboard. From this moment on, your Bitcoin is completely offline and no longer accessible via the internet. But of course, you can check the amount of your Bitcoin on the web interface at any time.

Why should you keep your Bitcoins in Switzerland?
With its long tradition of private wealth management and its world-famous stability, security and discretion, Switzerland is increasingly attracting the extraordinary wealth being generated by Bitcoin and the broader cryptocurrency sector. In order to retain its role as a leading global financial hub, Switzerland is accommodating this new-found wealth by catering to its specific needs.

With its famed discretion, rooted in its history of banking secrecy, an increasing number of wealthy individuals have wanted to safe keep their most valued assets in Switzerland. This has led to the development of some of the most sophisticated wealth-storage solutions ever devised. High-security Swiss vaults store a large share of the world’s gold, rare art and prized family heirlooms.

To adapt to the growing number of Bitcoin users, Switzerland is now developing cutting-edge solutions to preserve digital wealth. Primary among them is our Swiss Self-Custody solution, which continues Switzerland’s long tradition of secure wealth-storage solutions. It uses military-grade encryption and highly secure servers located in the heart of Switzerland.

Switzerland’s advantages regarding the safekeeping of Bitcoin are evident. It has a long tradition of securing the world’s most valuable private assets. Switzerland’s bank vaults are world-famous for their impenetrability. Switzerland is also one of the stablest countries in the world. Its policy of neutrality has kept it away from international conflicts and made it avoid major entanglements. Having our servers in Switzerland means they are located in one of the safest locations in the world.

Switzerland is also one of the world’s most accommodating jurisdictions for Bitcoin. It is the first major economy to have produced a clear, sturdy and logical legal framework to regulate the sector. Over the past few years, the Swiss government enacted a series of common-sense laws regarding digital assets. No burdensome legal requirements apply to the safekeeping of Bitcoin.

Complemented by some of the world’s strictest anti-money laundering laws, the legal environment in Switzerland is fertile for the continued development and accommodation of Bitcoin.
Why do we believe in full stack?
We are a full-stack company. This means that we deliberately refrain from working with technology companies such as Apple, Google or Amazon. For we believe that dependence on these companies would significantly compromise the security of your Bitcoin.

For example, we refrain from providing a smartphone app because we firmly believe that an app would compromise your privacy and, ultimately, the security of your Bitcoin. App users must trust both the manufacturer of their device and its operating system (e.g. Apple or Google) and the publishers of the app. Users must also be able to trust the third party through which data is exchanged before downloading apps and storing or sending data. We do not want to expose you to this risk and therefore do not offer a smartphone app but an easy to use web-dashboard.

Another example of full stack is that we host and operate our own server infrastructure in Switzerland and do not merely rent an Amazon server rack without having the possibility to design our own security measures.

No provider can simply turn off our service. No provider can dictate what data we have to share. No provider can jeopardize the security of your Bitcoins.

Last but not least, we believe the way forward is open. We are strong believers in Open-Source. We based our Swiss Self-Custody solution on open source, and much third-party software we use is open source.
What are the terms?
We believe that everyone should keep their Bitcoins safe and secure. No matter what income someone has or how many Bitcoins they hold. That's why we offer a transparent and easy-to-understand cost plan.

Numbrs is completely free when you join and as long as your stored Bitcoins do not exceed $50,000. You can use every feature of Numbrs without restrictions. If you manage more than $50,000 with our self-custody solution, a tiered model applies that charges a service fee based on the assets you store with us.

The service fee is an annual fee calculated as a percentage of the USD-denominated average annual balance of your assets in the Swiss Self-Custody Solution. The Service Fee tiered model can be reviewed below. The minimum annual fee is CHF 500 per year.
Bitcoin balance
Up to $50.000
From $50.000
From $150.000
From $250.000
From $500.000
From $750.000
From $1Million
Service Fee
$0
0.85%
0.80%
0.70%
0.60%
0.55%
0.50%
Bitcoin balance
Service Fee
Up to $50.000
$0
From $50.000
0.85%
From $150.000
0.80%
From $250.000
0.70%
From $500.000
0.60%
From $750.000
0.55%
From $1Million
0.50%
accounts with balance higher than $50.000 have a minimum yearly fee of $500


We attach great importance to transparent communication. For this reason, every user is informed early and prominently as soon as fees are charged. Each user is also given certain lead times before charges are debited. This way, you can make sure you don't pay for anything you don't want to pay for. To learn more, please visit this page.