Sign from your phone
The mobile companion to Tenshu, your COINCUBE desktop app. Keychain holds keys in your Vault's multisig and helps you back up and recover your Cubes: remote, resilient, and ready for inheritance.
Signing, wherever you are
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 Tenshu, your COINCUBE desktop app. One ecosystem, multiple devices, complete sovereignty.
Made to work with Tenshu
Keychain is the mobile half of Tenshu. It holds one or more of the keys in your Vault's multisig (the ones that travel with you) and it's how you back up and recover your Cubes and your Vault's multisig configuration if a device is ever lost.
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.