#Bitkey

Not an innovation because it repackages the same server-assisted multisig model already used by wallets like Green.

Bitkey uses a 2-of-3 multisig with one key on the mobile app, one on the hardware device, and one held by Block. While users can recover funds without the server if they retain both devices, any loss requires vendor involvement.

The open-source client and reproducible builds do not remove the trust dependency on backend services.

Unlike Bitkey, Green offers a 2-of-3 setup with an offline backup that allows recovery without contacting the vendor.

Bitkey shifts complexity into a user-friendly flow but offers no meaningful