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- Jade Core vs Coldcard Mk3
Blockstream Jade Core vs Coinkite Coldcard Mk3
What Jade Core does better (3) and where Coldcard Mk3 wins (1) — every spec side by side.
vs
8.5Open source3.0
Why is Jade Core better than Coldcard Mk3?
- Open-source firmwareYes · Coldcard Mk3: No
- Reproducible buildsYes · Coldcard Mk3: No
- Weight20 g vs 30 g+50%
Why is Coldcard Mk3 better than Jade Core?
- Thickness12 mm vs 9 mm+33%
Specifications
Side by side
| Security | ||
| Secure Element chip | No | — |
| Air-gapped signing | No | — |
| 100% air-gapped | No | — |
| Supply-chain & tamper protection | Yes | — |
| Secure boot | Yes | — |
| Anti-klepto (anti-exfil) signing | Yes | — |
| Firmware & open source | ||
| Open-source firmware | Yes | No |
| Source code available | Yes | Yes |
| Reproducible builds | Yes | No |
| Firmware licence | MIT | — |
| Upgradable firmware | Yes | Yes |
| Firmware update via | USB, Bluetooth | — |
| Bitcoin-only firmware / edition | Yes | — |
| Device lock | ||
| PIN lock | Yes | — |
| PIN entered on the device | Yes | — |
| Fingerprint unlock | No | — |
| Duress PIN / decoy wallet | No | — |
| Brick / wipe PIN | Yes | — |
| Wipe after failed attempts | Yes | — |
| Time-delayed unlock | No | — |
| Anti-phishing words | No | — |
| Keys & backup | ||
| BIP39 passphrase | Yes | — |
| Shamir backup (SLIP-39) | No | — |
| Seed XOR | No | — |
| BIP85 child seeds | Yes | — |
| 24-word seed | Yes | — |
| SeedQR backup | No | — |
| microSD backup | No | — |
| NFC backup card | No | — |
| User-added entropy (dice) | Yes | — |
| Stateless use (no stored keys) | Yes | — |
| Multiple seeds on one device | No | — |
| Bitcoin features | ||
| Multisig | Yes | — |
| Taproot | Yes | — |
| Miniscript | Yes | — |
| Message signing | Yes | — |
| Coin control | Yes | — |
| Own node connection | Yes | — |
| Tor support | Yes | — |
| Replace-by-fee | Yes | — |
| Silent Payments | No | — |
| Spending limits | No | — |
| Testnet | Yes | — |
| Supported assets | ||
| Altcoins & tokens | No | — |
| Bitcoin only | Yes | — |
| Connectivity | ||
| Signing connectivity | USB-C, Bluetooth | — |
| USB | Yes | — |
| USB-C | Yes | — |
| Bluetooth | Yes | — |
| NFC | No | — |
| QR code camera | No | — |
| Animated QR (UR) | No | — |
| microSD signing | No | — |
| Screen & input | ||
| Screen | Yes | — |
| Screen size | 1.9″ | — |
| Screen type | IPS LCD | — |
| Screen resolution | 320 × 170 | — |
| Touchscreen | No | — |
| Colour screen | Yes | — |
| Gorilla Glass | No | — |
| Controls | Buttons | — |
| QWERTY keyboard | No | — |
| Battery & power | ||
| Built-in battery | No | — |
| Wireless charging | No | — |
| Design | ||
| Weight | 20 g | 30 g |
| Length | 65 mm | 88 mm |
| Width | 30 mm | 51 mm |
| Thickness | 12 mm | 9 mm |
| Materials | Plastic | — |
| Water / dust resistance | No | — |
| Several colours available | No | — |
| Warranty (months) | 0 | — |
| Assembled in | China | — |
| DIY build possible | Yes | — |
| Apps | ||
| Official apps | Windows, macOS, Linux, Android, iOS | — |
| Desktop app | Yes | — |
| Mobile app | Yes | — |
| Works with wallet apps | Bitcoin Safe, Nunchuk, Cove, Electrum, Sparrow, Specter Desktop, Blockstream Green, BlueWallet, Bitcoin Keeper, Bull, Liana | — |
| Compatible third-party wallets | 11 | — |
| Other features | ||
| FIDO2 / U2F security key | Yes | — |
| Password manager | No | — |
