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 holding one or more keys in your n-of-m setup.
Add geographic resilience
Family and friends can hold keys to your Vault on their own Keychains, in different places. If your keys are lost or unavailable, theirs complete the quorum.
Inheritance keys
Your heirs run Keychain too, each holding their own inheritance key. Those keys can only spend 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 to hold one or more of the keys in your multi-sig setup — the ones that travel 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. And Keychain isn't just for you — your family and heirs run it too, each holding an inheritance key that only becomes spendable after a time-lock expires.
Available on iOS and Android.
Complete your sovereignty
Desktop wallet + mobile companion. One Cube, complete control.