Greetings, and thanks for your interest in Casa!
"Is Casa a Custodian?"
No. We're not a custodian of funds, because we don't ever hold enough keys needed to spend funds from your keyset. We only hold one key in your multisig keyset, which is meant to be used in an emergency situation in which one of your keys is lost or stolen.
"Why use Multisig?"
The most secure way to store bitcoin is by eliminating single points of failure through multisig security. We try and make setting up multisig as easy and secure as possible.
The Casa App is an advanced, guided storage solution for holding bitcoin long term.
Casa Wallet, the free version of the Casa App, is a unique and secure storage solution that doesn't involve backup seeds or trusting your funds to any 3rd party. It's the next best thing to multisig.
Basic multisig, included in our Gold membership, is a version of the Casa App that secures your bitcoin with 3 geographically-distributed keys.
Advanced multisig, included in our Platinum and Diamond memberships, is a version of the Casa App that secures bitcoin for yourself, your family, or your team in a 3 of 5 multisig setup.
If you want to learn, in greater depth, how we approach security, check out our Wealth Security Protocol:
Multisig doesn't have to be complicated! The process to set up multisig in the Casa App is easy and guided - and includes customer support if you need it.
We have a trial available now where you can try Casa Gold free for 30 days.