BlockBitcoin-only wallet
Block Bitkey
Block Bitkey is a Bitcoin-only wallet released in March 2024. Key specs: open-source firmware, signing connectivity NFC, built-in battery, weight 65 g.
4.3Score
Security3.3
Open source6.4
Bitcoin features2.6
Ease of use4.9
Connectivity4.3
price range€125–155Reference price converted from USD
- Released
- March 2024
- Brand
Block- Popularity
- #37 of 141
- Model numbers
- Bitkey (2024)
NoSecure Element chip
YesOpen-source firmware
NoAir-gapped signing
NFCSigning connectivity
YesBuilt-in battery
65 gWeight
Specifications
Full specifications
Security
- Secure Element chip
- No
- Air-gapped signing
- No
- 100% air-gapped
- No
- Supply-chain & tamper protection
- No
- Secure boot
- Yes
- Anti-klepto (anti-exfil) signing
- No
Firmware & open source
- Open-source firmware
- Yes
- Source code available
- Yes
- Reproducible builds
- No
- Firmware licence
- MIT
- Upgradable firmware
- Yes
- Firmware update via
- NFC
- Bitcoin-only firmware / edition
- Yes
Device lock
- PIN lock
- No
- PIN entered on the device
- No
- Fingerprint unlock
- Yes
- Duress PIN / decoy wallet
- No
- Brick / wipe PIN
- No
- Wipe after failed attempts
- No
- Time-delayed unlock
- No
- Anti-phishing words
- No
Keys & backup
- BIP39 passphrase
- No
- Shamir backup (SLIP-39)
- No
- Seed XOR
- No
- BIP85 child seeds
- No
- 24-word seed
- No
- SeedQR backup
- No
- microSD backup
- No
- NFC backup card
- No
- User-added entropy (dice)
- No
- Stateless use (no stored keys)
- No
- Multiple seeds on one device
- No
Bitcoin features
- Multisig
- Yes
- Taproot
- No
- Miniscript
- No
- Message signing
- No
- Coin control
- Yes
- Own node connection
- Yes
- Tor support
- No
- Replace-by-fee
- No
- Silent Payments
- No
- Spending limits
- No
- Testnet
- No
Supported assets
- Altcoins & tokens
- No
- Bitcoin only
- Yes
Connectivity
- USB
- No
- USB-C
- Yes
- Bluetooth
- No
- NFC
- Yes
- QR code camera
- No
- Animated QR (UR)
- No
- microSD signing
- No
Screen & input
- Screen
- No
- Touchscreen
- No
- Colour screen
- No
- QWERTY keyboard
- No
Battery & power
- Built-in battery
- Yes
- Battery capacity
- 330 mAh
- Removable battery
- No
- Wireless charging
- No
Design
- Weight
- 65 g
- Length
- 62 mm
- Width
- 56 mm
- Thickness
- 13 mm
- Materials
- Corian and stainless steel
- Water / dust resistance
- No
- Several colours available
- No
- Warranty (months)
- 12
- Assembled in
- USA
- DIY build possible
- No
Apps
- Official apps
- Android, iOS
- Desktop app
- No
- Mobile app
- Yes
- Compatible third-party wallets
- 0
Other features
- FIDO2 / U2F security key
- No
- Password manager
- No
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
In collections
Bitcoin-only wallets: Built-in battery6Bitcoin-only wallets: NFC6Hardware wallets: Open-source firmware + NFC7Hardware wallets: Bitcoin only + NFC7Bitcoin-only wallets: Open-source firmware8Hardware wallets: Bitcoin only + built-in battery8Hardware wallets: Built-in battery + NFC10Bitcoin-only wallets: Multisig11
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