Cardware BTC is a secure and affordable hardware wallet dedicated to storing and managing Bitcoin. By leveraging advanced QR code technology to transfer transaction data, private keys remain completely offline, significantly reducing the risk of cyber threats.
During setup, users generate their private keys with true entropy via dice rolls (with a D20 die included in every box) or through video streaming, ensuring truly random key creation. Powered by USB-C solely for power—data lines are visibly disconnected—Cardware BTC offers effortless offline signing from mobile devices, desktops, or even a simple charging port.
Built for both individual enthusiasts and larger institutions, Cardware BTC seamlessly integrates with web-based platforms, is accessible through any browser, and delivers a streamlined highly secure approach to Bitcoin management.
What you get
1x Cardware Wallet – Bitcoin-only edition
Durable NFC smart card (credit-card size)
Tamper-evident, sealed packaging
Shipped discreetly from Belgium
Verified compatibility with: SeedSigner, Nunchuk, Specter, Sparrow & more
Who it’s for:
Bitcoiners who want an offline backup
Multi-sig or inheritance planners
Users of SeedSigner, taproot scripts, or PSBT workflows
Those who value privacy and simplicity
Why it matters:
Air-gapped and unhackable — no connection, no battery, no tracking
Built for Bitcoin-only use — no altcoin distractions
Elegant physical backup without QR codes or paper wallets
Helps you stay sovereign — without compromise