Casa App (formerly Keyaster) allows you to easily and securely use hardware wallet devices as keys to sign transactions in your multisig keyset.
Since Casa is a software and service experience, we work closely with leading hardware device (sometimes referred to as "hardware wallet") manufacturers to ensure your keys are stored in the most secure, reliable, and user-friendly devices.
The hardware wallet devices that we currently support with Casa multisig are:
Trezor Model T
Ledger Nano S
Ledger Nano X
You can find similar instructions for setting them up on the manufacturers' respective websites, however their guides are primarily designed for users who will be using them in single signature accounts. The primary difference is the importance of security features like seed phrases, and to a lesser extent PIN codes.
Seed phrases are a physical copy of your private key. Before multisig, any loss of a key meant that funds were gone forever, so HW manufacturers work hard to ensure that users create backups.
The challenge of seed backups is they make security a lot more complicated. With Casa, any lost key can be replaced with a new one, rather than restored from backup, as long as a minimum of three keys remain intact.
Similar to seed phrases, hardware manufacturers implement PIN protection on their devices to protect against physical theft of the device. Some go as far as to automatically wipe the device after a certain number of incorrect guesses to prevent a brute force attack.
PIN protection is far less important in a multisig setup, since the theft of a single key will not compromise funds. A bigger concern is forgetting the PIN, which can lead to inadvertent key loss. For this reason, we encourage clients to the same simple, memorable PIN on all of their devices, and back it up to a password manager.
If you're using multiple hardware wallet devices in your setup, we recommend using the same PIN code across all your devices.
Hardware Setup Support
Having issues? Get top-level support from one of our experts by emailing [email protected]
Select your hardware wallet device below for a full guide on how to set up each device for use with Casa: