Collaborative custody combines self-custody control with professional key recovery assistance. Here is how Casa, Unchained, and other services compare in 2026.
Pure self-custody — where you hold all keys yourself — offers maximum security but maximum responsibility. If you lose your seed phrase backups, your Bitcoin is gone forever with no recourse.
Collaborative custody solves this by using multi-signature setups where a professional service holds one key and you hold the others. You remain in control (you need your keys to spend), but the service provides a recovery path if you lose a key.
A collaborative custody setup typically uses a 2-of-3 multi-signature wallet:
To spend, you need any 2 of 3 keys. In normal operation, you use your two keys. If you lose one key, you can work with the service to recover using their key plus your remaining key.
The service cannot spend your Bitcoin alone — they only have 1 of the required 2 signatures.
Casa is the most well-known collaborative custody service. They offer tiered plans:
Casa Gold ($250/year):
Casa Diamond ($2,100/year):
Casa's mobile-first approach makes it accessible. You can set up a 2-of-3 multi-sig wallet without deep technical knowledge using their app.
Best for: Bitcoin holders who want collaborative custody with good UX and don't want to manage the technical complexity themselves.
Unchained targets a more technically sophisticated user. Their collaborative custody is built around 2-of-3 multi-sig with two keys controlled by you and one by Unchained.
Key difference from Casa: Unchained gives you direct access to the raw multi-sig wallet configuration (output descriptors, xpubs). You can use Sparrow, Caravan, or any compatible wallet software — you're not locked into Unchained's interface.
Unchained Vault (~$250/year):
Additional services:
Best for: Technical users who want open standards and the ability to use any compatible software. Also strong for users who want Bitcoin-backed loans.
Theya is a newer entrant with a focus on simplicity and low cost.
Plans start at ~$10/month:
Theya positions itself as the easiest entry point to multi-sig collaborative custody. The lower price point makes it accessible for holders who want multi-sig protection but aren't ready to pay $250+/year.
Best for: People trying multi-sig collaborative custody for the first time, or holders with $10,000-$100,000 who want protection without premium pricing.
If you want multi-sig without a third-party key holder:
Sparrow Wallet (free) allows you to set up 2-of-3 or other multi-sig configurations entirely yourself, using multiple hardware wallets you control.
Advantage: No third-party key holder, no subscription fee, maximum sovereignty.
Disadvantage: Recovery is entirely your responsibility. Losing two of three keys = losing Bitcoin. No concierge service.
Use self-hosted multi-sig if you're technically capable and have a reliable geographic distribution strategy for your keys.
| Situation | Recommended Approach |
|---|---|
| Under $50,000, technically comfortable | Single hardware wallet + Casa Gold |
| $50,000-$250,000, want simplicity | Unchained or Casa Gold |
| Over $250,000 | Casa Diamond or Unchained + dedicated concierge |
| Technical user, no third-party | Sparrow multi-sig (self-hosted) |
| Want loans against Bitcoin | Unchained (loans product) |
| Inheritance is primary concern | Casa (best inheritance protocol) |
This is the most important question for any collaborative custody user.
With Casa: Your two keys are sufficient to move funds. You can export the wallet configuration and use Sparrow or any compatible wallet to spend. Casa's key only matters for recovery — you never need it in normal operation.
With Unchained: Same. Your two keys control the wallet. The wallet is built on open standards (xpubs, output descriptors). If Unchained disappears, you use your two keys in Sparrow to move funds.
Key principle: A good collaborative custody service gives you the wallet descriptor and your own keys in a format that works in any compatible software. Never use a service that locks your keys in a proprietary format.
Both Casa and Unchained include inheritance protocols:
Casa: Heir receives a sealed document with Casa's key and instructions. After your death, the heir works with Casa using the sealed document to access funds using 1 (heir's document) + 1 (their recovery key) of the 2-of-3.
Unchained: Unchained's key + one of your keys (held by your estate/attorney) can access funds.
Both approaches ensure that a properly prepared heir can access your Bitcoin without knowing all three keys during your lifetime.
Is my Bitcoin actually in my control with collaborative custody? Yes. You control 2 of the 3 keys required to spend. The service cannot spend your Bitcoin alone. You can always move your funds using your two keys without the service.
What if I disagree with the service and want to leave? Export your two keys and the wallet descriptor. Import into Sparrow. Send your Bitcoin to a new wallet you control entirely. The process takes less than 30 minutes.
Should I use collaborative custody for my entire Bitcoin position? Many people use it for their primary savings position while keeping a small amount in a single hardware wallet for more accessible spending. The choice depends on how often you transact.
What hardware wallets work with these services? All major services support Coldcard, Trezor, and Ledger. Coldcard is the most commonly recommended for serious multi-sig setups.
Collaborative custody is the pragmatic middle ground between exchange custody (full trust) and pure self-custody (full responsibility). For most Bitcoin holders with $50,000+, it is worth the annual fee.
Start with Unchained if you're technical and want flexibility. Start with Casa if you want the best mobile experience and inheritance protocol. Try Theya if you want to start at lower cost.
The right collaborative custody service is the one you'll actually use and maintain properly.
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