BitBox02Key Features
- Desktop & Android Support (USB-C only)
- Works with Windows, macOS, Linux, and Android via the BitBoxApp over USB-C.
- No wireless or iOS connectivity on the original model (wired by design).
- White OLED Display
- 128×64 px monochrome OLED enables on-device verification of addresses and details.
- Clear, minimalist UI paired with capacitive touch for tap/slide/hold gestures.
- Dual-Chip Security
- Secure element (Microchip ATECC608B) hardens against physical attacks; MCU handles open-source firmware.
- Seed is encrypted on the MCU and protected by the secure chip and device password; only Shift-signed firmware can run (with device attestation).
- Instant microSD Backups
- One-tap, device-generated backup to the included microSD card.
- Optionally display BIP-39 words for interoperable recovery.
- Anti-Klepto Signing Protection
- Mitigates nonce-based key-leak attacks during ECDSA signing; first wallet to ship this defense.
- Documented threat model and implementation details are public.
- Bitcoin-only & Multi Editions
- Bitcoin-only edition: reduced code = reduced attack surface; locked to BTC forever (can’t switch to Multi).
- Multi edition: BTC, ETH(+ERC-20), ADA, LTC, etc.
- U2F Second-Factor (Multi edition)
- Use the BitBox02 Multi as a FIDO U2F security key with supported services.
- Open Source & Reproducible Builds
- Firmware, app, and libs are open source; builds are reproducible so anyone can verify releases (“don’t trust, verify”).
- Guides provided to compile and match hashes against official binaries.
- USB-Only Attack-Surface Discipline
- No Bluetooth, Wi-Fi, or NFC; communication with the BitBoxApp is encrypted over USB.
- Designed to minimize remote-attack vectors while remaining easy to use.
