Hermit is an open-source, sharded, air-gapped wallet designed to help groups of people safely manage and use bitcoin private keys. It has two main features:

  • Air-Gapped: Hermit is designed to run in a stripped-down Linux environment on custom hardware with WiFi, Bluetooth, USB, and all other forms of wired & wireless communication removed: an air-gapped system.
  • Sharded: Shard families are customizable and allow for groups to apportion trust among their members in whatever way matches their organizational needs.

View the code here: https://github.com/unchained-capital/hermit