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- LetheKit Seedtool vs Optimum
Blockchain Commons LetheKit Seedtool vs Prokey Optimum
What LetheKit Seedtool does better (0) and where Optimum wins (1) — every spec side by side.
vs
7.4Open source8.6
Why is LetheKit Seedtool better than Optimum?
LetheKit Seedtool has no measurable advantages in this pair.
Why is Optimum better than LetheKit Seedtool?
- Open-source firmwareNo · LetheKit Seedtool: Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | — | Yes |
| Air-gapped signing | — | No |
| 100% air-gapped | — | No |
| Supply-chain & tamper protection | — | Yes |
| Anti-klepto (anti-exfil) signing | — | No |
| Firmware & open source | ||
| Open-source firmware | No | Yes |
| Source code available | Yes | Yes |
| Reproducible builds | No | No |
| Firmware licence | — | Lesser GPLv3 |
| Upgradable firmware | Yes | Yes |
| Firmware update via | — | USB |
| Bitcoin-only firmware / edition | — | No |
| 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 | — | No |
| 24-word seed | — | Yes |
| 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 | — | No |
| Miniscript | — | No |
| Message signing | — | No |
| Coin control | — | No |
| Own node connection | — | No |
| Tor support | — | No |
| Replace-by-fee | — | No |
| Silent Payments | — | No |
| Spending limits | — | No |
| Testnet | — | Yes |
| Supported assets | ||
| Altcoins & tokens | — | Yes |
| Bitcoin only | — | No |
| Connectivity | ||
| Signing connectivity | — | USB |
| USB | — | Yes |
| USB-C | — | No |
| Bluetooth | — | No |
| NFC | — | No |
| QR code camera | — | No |
| Animated QR (UR) | — | No |
| microSD signing | — | No |
| Screen & input | ||
| Screen | — | Yes |
| Screen size | — | 0.96″ |
| Screen type | — | LCD |
| Screen resolution | — | 128 × 64 |
| Touchscreen | — | No |
| Colour screen | — | No |
| Gorilla Glass | — | No |
| Controls | — | Buttons |
| QWERTY keyboard | — | No |
| Battery & power | ||
| Built-in battery | — | No |
| Wireless charging | — | No |
| Design | ||
| Weight | — | 17 g |
| Length | — | 50 mm |
| Width | — | 41 mm |
| Thickness | — | 9.4 mm |
| Materials | — | Plastic |
| Water / dust resistance | — | No |
| Several colours available | — | No |
| Warranty (months) | — | 12 |
| DIY build possible | — | No |
| Apps | ||
| Desktop app | — | No |
| Mobile app | — | No |
| Compatible third-party wallets | — | 0 |
| Other features | ||
| FIDO2 / U2F security key | — | Yes |
| Password manager | — | No |
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