COINCUBE Keychain
Sign from your phone
The mobile companion app for your COINCUBE Vault. Add remote, securely stored keys to your multi-key setup for geographic resilience and seamless inheritance planning.
Your keys, everywhere you need them
Sign from your phone
Approve multi-sig transactions from anywhere. Your phone becomes a secure signing device for your Vault.
Add geographic resilience
Store a key remotely on a device you control. If your primary keys are unavailable, Keychain provides a secure backup path.
Inheritance key
Designate a Keychain device as your inheritance key. It activates only after a time-lock expires — trustless succession.
Seamless sync
Keychain stays in sync with your COINCUBE desktop wallet. One ecosystem, multiple devices, complete sovereignty.
Part of the COINCUBE ecosystem
Keychain is designed to work seamlessly with the COINCUBE Vault. Use it as one of your multi-sig keys — the one that travels with you.
Set up a 2-of-3 configuration: one hardware wallet at home, one in a safe deposit box, and Keychain on your phone for everyday signing. Or designate it as an inheritance key that only activates after a time-lock.
Available on iOS and Android.
Complete your sovereignty
Desktop wallet + mobile companion. One Cube, complete control.