Self-custody
Keep your keys offline
Open, verifiable devices to hold your bitcoin yourself: assembled, as a kit, or built by you. Pick one and you see everything we have for it.
NewSEEDER KitOffline Dice zpub QRFrom €30
SeedSigner
A stateless, air-gapped signer: no USB, no Wi-Fi, no battery. It signs with QR codes and it forgets your seed when you unplug it. Choose the DIY kit or take it assembled, standard or in the premium aluminium case.
Air-gappedNo USB, no Wi-Fi
QRSigning
Kit or builtYour choice
Choose your SeedSigner
From€66
Everything for the SeedSigner
SEEDER
Our own seed generator. You roll the dice, it does the BIP39 maths in front of you and you can verify every word. It exports a watch-only zpub by QR and the firmware is on our web flasher.
OfflineYour entropy, no RNG
DiceOr coin flips
zpub QRWatch-only export
Get your SEEDER
From€30
Everything for the SEEDER
Krux
An open-source Bitcoin signer on the K210 chip, running the Krux firmware. It works air-gapped and signs with QR codes. Coming soon to the shop.
Air-gappedOffline signing
QRSigning
Open sourceKrux firmware