The secure home for your bitcoin.

Casa Keymaster is the best way for consumers to secure their bitcoin.

Today we're announcing new Team features that will make it easier than ever for families and small teams to use Keymaster multisig to jointly secure funds.

With our new Team features, Casa Diamond members will be able to assign each of the keys in their 3-of-5 multisig set to different people. With multiple people securing keys within one keyset, families and small teams can have greater control and security when using Keymaster.

These new features come with existing Diamond memberships at no additional cost. If you're currently a Diamond member and would like to add family members or teammates to your Key Shield, you can contact your client advisor for next steps.

How it works

Diamond members now have the ability to add team members to their Key Shield. The original Diamond user is now a Team Leader, and the additional users are co-signers.

The Team Leader can use Keymaster to assign keys to different signers, up to the three total hardware keys you own. Distributing keys increases physical security due to the geographic dispersion (they aren't all sitting in one place), and it allows multiple decision makers to sign off when Bitcoin is spent.

Adding keys and signing works exactly like it does currently - it's a simple process of connecting your hardware wallet to your computer and approving the action. Now, if a teammate is assigned to a key, the request for a signature will go directly to them.

The Team Leader has control over who manages the keys after the keyset is set up. So if a spouse or colleague loses a key, you can safely rotate out their key and replace it with a new one.

The Team Leader can also request a Health Check from each teammate to ensure they still have access to their device. Since the keys are distributed amongst different people, we recommend running health checks once a month to ensure the keys are safe and accessible.

Available to Diamond members over the next few weeks

We'll be rolling out Keymaster for Teams to Diamond members over the next few weeks. We will also be reaching out to current Diamond members who have expressed interest in our Teams feature with more details.

To schedule a team onboarding, or if you're interested in receiving a demo of Keymaster, send an email to

What do you get with a Casa Diamond membership?

Casa Diamond is our highest membership tier and is great for individuals or teams securing a large amount of Bitcoin. It includes:

  • Keymaster 3-of-5 multisig, based on the principles described in our Wealth Security Protocol, now with Team features.
  • A dedicated client advisor, with personal on-boarding and assistance whenever you need it.
  • Free, same-day overnight shipping of replacement hardware wallets, in case one of yours is lost.
  • Inheritance features and planning assistance, so your loved ones can safely receive your bitcoin in case of accidents (Coming soon!)

Interested in signing up or learning more?
Send us an email at

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