- isse.eu.com
- Compare
- Bitkey (2026) vs DIY Card
Block Bitkey (2026) vs Satochip DIY Card
What Bitkey (2026) does better (7) and where DIY Card wins (16) — every spec side by side.
vs
3.3Security8.0
6.4Open source9.2
2.6Bitcoin features9.1
8.8Ease of use8.7
4.3Connectivity5.6
Why is Bitkey (2026) better than DIY Card?
- ScreenYes · DIY Card: No
- TouchscreenYes · DIY Card: No
- Secure bootYes · DIY Card: No
- Bitcoin-only firmware / editionYes · DIY Card: No
- Fingerprint unlockYes · DIY Card: No
- Colour screenYes · DIY Card: No
- Built-in batteryYes · DIY Card: No
Why is DIY Card better than Bitkey (2026)?
- Secure Element chipNo · Bitkey (2026): Yes
- BIP39 passphraseNo · Bitkey (2026): Yes
- TaprootNo · Bitkey (2026): Yes
- Compatible third-party wallets0 vs 2
- Weight79 g vs 5 g15.8×
- Supply-chain & tamper protectionNo · Bitkey (2026): Yes
- PIN lockNo · Bitkey (2026): Yes
- Wipe after failed attemptsNo · Bitkey (2026): Yes
- 24-word seedNo · Bitkey (2026): Yes
- User-added entropy (dice)No · Bitkey (2026): Yes
- Message signingNo · Bitkey (2026): Yes
- Tor supportNo · Bitkey (2026): Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | No | Yes |
| Secure Element certification | — | EAL6+ |
| Air-gapped signing | No | No |
| 100% air-gapped | No | No |
| Supply-chain & tamper protection | No | Yes |
| Secure boot | Yes | No |
| Anti-klepto (anti-exfil) signing | No | No |
| Firmware & open source | ||
| Open-source firmware | Yes | Yes |
| Source code available | Yes | Yes |
| Reproducible builds | No | No |
| Firmware licence | MIT | Affero GPLv3 |
| Upgradable firmware | Yes | Yes |
| Firmware update via | NFC | NFC |
| Bitcoin-only firmware / edition | Yes | No |
| Device lock | ||
| PIN lock | No | Yes |
| PIN entered on the device | No | No |
| Fingerprint unlock | Yes | No |
| Duress PIN / decoy wallet | No | No |
| Brick / wipe PIN | No | No |
| Wipe after failed attempts | No | Yes |
| Time-delayed unlock | No | No |
| Anti-phishing words | No | No |
| Keys & backup | ||
| BIP39 passphrase | No | Yes |
| Shamir backup (SLIP-39) | No | No |
| Seed XOR | No | No |
| BIP85 child seeds | No | No |
| 24-word seed | No | Yes |
| SeedQR backup | No | No |
| microSD backup | No | No |
| NFC backup card | No | No |
| User-added entropy (dice) | No | Yes |
| Stateless use (no stored keys) | No | No |
| Multiple seeds on one device | No | No |
| Bitcoin features | ||
| Multisig | Yes | Yes |
| Taproot | No | Yes |
| Miniscript | No | No |
| Message signing | No | Yes |
| Coin control | Yes | Yes |
| Own node connection | Yes | Yes |
| Tor support | No | Yes |
| Replace-by-fee | No | Yes |
| Silent Payments | No | No |
| Spending limits | No | No |
| Testnet | No | Yes |
| Supported assets | ||
| Altcoins & tokens | No | Yes |
| Bitcoin only | Yes | No |
| Connectivity | ||
| Signing connectivity | NFC | USB, NFC |
| USB | No | Yes |
| USB-C | Yes | — |
| Bluetooth | No | No |
| NFC | Yes | Yes |
| QR code camera | No | No |
| Animated QR (UR) | No | No |
| microSD signing | No | No |
| Screen & input | ||
| Screen | Yes | No |
| Screen type | OLED | — |
| Touchscreen | Yes | No |
| Colour screen | Yes | No |
| Controls | Touch Screen | — |
| QWERTY keyboard | — | No |
| Battery & power | ||
| Built-in battery | Yes | No |
| Battery capacity | 330 mAh | — |
| Removable battery | No | — |
| Wireless charging | No | — |
| Design | ||
| Weight | 79 g | 5 g |
| Length | 66 mm | 85.6 mm |
| Width | 60 mm | 54 mm |
| Thickness | 13.6 mm | — |
| Materials | Corian and stainless steel | Plastic |
| Water / dust resistance | No | Yes |
| Several colours available | No | No |
| Warranty (months) | 12 | 24 |
| Assembled in | USA | — |
| DIY build possible | No | Yes |
| Apps | ||
| Official apps | Android, iOS | Android |
| Desktop app | No | No |
| Mobile app | Yes | Yes |
| Works with wallet apps | — | Electrum, Sparrow |
| Compatible third-party wallets | 0 | 2 |
| Other features | ||
| FIDO2 / U2F security key | No | No |
| Password manager | No | No |
