BitBox02 (Bitcoin-only)

The BitBox02 Bitcoin-only edition is a minimalist Swiss-made hardware wallet from Shift Crypto in Zurich, engineered specifically for Bitcoin stackers who value open-source code, security auditing and a tiny firmware attack surface. By shipping only Bitcoin — and nothing else — the Bitcoin-only firmware removes thousands of lines of code that are otherwise irrelevant, drastically reducing the surface attackers can exploit.

Swiss security by design. The BitBox02 uses a dual chip architecture with a Microchip ATECC608B secure element, paired with a microcontroller that runs Shift Crypto's fully open-source firmware. The code has been independently audited by external security researchers and is published for anyone to inspect — the gold standard for transparency in the hardware-wallet industry.

Instant backup & recovery. Instead of (or in addition to) writing down 24 seed words, the BitBox02 lets you create a verifiable encrypted backup on a microSD card in seconds. Restore to a new device in one swipe — no typing, no transcription errors. You can still export a BIP39 mnemonic if you want to be vendor-neutral.

Discreet, premium hardware. A compact USB-C dongle with a USB-A adapter in the box, a touch-sensor surface (no external buttons to press), and OLED display. Designed to be carried and used daily rather than locked in a vault. Consistently rated 5 stars on Trustpilot for both the device and the Swiss customer-support team that backs it.

Easy Backup & Recovery — microSD First

• Insert a microSD card and create an encrypted backup in seconds — no fragile seed-word transcription required.
• Restore to a new BitBox02 with a single swipe, or use a 24-word BIP39 mnemonic if you prefer to remain vendor-neutral.
• Backups are encrypted and verifiable — you can confirm a backup is valid without exposing the seed.

Bitcoin-Only Firmware for a Smaller Attack Surface

• The Bitcoin-only edition loads only Bitcoin code — no Ethereum, altcoins or unused chain logic.
• Less code means fewer bugs and a smaller exploitable surface than multi-edition wallets that bundle every coin.
• Flash new firmware or switch editions later if your needs change (with the BitBox App on desktop).

Native Bitcoin Ecosystem Integration

• Works natively with Bitcoin Core, Electrum, Specter Desktop, BlueWallet and Sparrow Wallet.
• PSBT (Partially Signed Bitcoin Transaction) workflow supported for air-gapped-style signing on connected setups.
• Lights-compatible: works with Lightning wallet integrations where supported.

Desktop + Android, Cross-Platform BitBox App

• Desktop support for Windows, Mac and Linux via the open-source BitBoxApp.
• Android mobile via USB-C (the standard BitBox02 does not support iPhone/iPad — the BitBox02 Nova adds Bluetooth for that).
• One app handles firmware updates, coin management and backups — no Chrome extension required.

Minimalist, Discreet Hardware

• Compact USB-C dongle — barely larger than a thumb drive — with a USB-A adapter in the box.
• Touch-sensor surface: tap, slide and hold instead of pressing external buttons — feels premium, as reviewers note.
• Bright OLED display to verify every address, amount and fee before you sign.

100% Open-Source Firmware

• Every line of firmware is published and reproducible — there are no proprietary black boxes hiding inside your wallet.
• Independently audited by external security researchers; audit reports are public on the Shift Crypto security page.
• Reproducible builds mean you can verify the firmware you flash matches the audited source code.

Dual-Chip Secure Architecture

• The BitBox02 pairs a general-purpose microcontroller with a Microchip ATECC608B secure element for key sealing, anti-tamper and chip-to-chip encryption.
• Private keys are generated and stored on the secure element — never exposed to the host computer.
• PIN retry limits and chip-level defenses protect against brute-force attacks if the device is stolen.

Anti-Phishing & Verified Inputs

• Every transaction is shown on the OLED display for you to confirm before signing — addresses and amounts are verified on the device, not just on screen.
• Anti-kleptography checks help detect malicious wallet software trying to manipulate transactions.
• BitBoxApp shows a per-device check word on pairing so you can detect a tampered connection.

Anchor in Swiss Trust

• Shift Crypto is a Swiss company subject to Swiss data-protection law — your metadata isn't sold or shared.
• Servers used for firmware-distribution integrity are operated by Shift Crypto themselves, not third parties.
• 5-star Trustpilot rating is anchored in real, verified user reviews of both product and support.

Shift Crypto is a Swiss hardware-wallet company founded in 2015 and based in Zurich, Switzerland. The company was started by a small team of cryptography and hardware engineers with a clear philosophy: hardware wallets should be open-source, independently audited, easy to use and genuinely Swiss-made.

Shift Crypto publishes the source code for both the BitBox02 firmware and the BitBoxApp — and funds independent security audits on a regular basis. The BitBox02's secure element is paired with a microcontroller running reproducible builds, so customers can verify the running firmware matches what was audited. The company operates its firmware distribution servers itself rather than relying on third-party CDNs.

Shift Crypto is widely trusted in the Bitcoin community for keeping the Bitcoin-only edition price-competitive (~$89), maintaining an active public security blog, and answering support tickets directly from the Zurich team. The BitBox02 family now includes the original BitBox02 (USB-C, standard OLED, black) and the newer BitBox02 Nova (glass OLED, EAL6+ secure chip, Bluetooth for iPhone/iPad support).