SeedSigner
Air-gapped Bitcoin signing devices: SeedSigner+, Rugged Pill, OpenPill and aluminium cases, plus DIY kits. Open-source hardware that keeps your keys offline for good.
Open-source Bitcoin hardware, printed and assembled in Germany, shipped across Europe. Pay with Bitcoin (Lightning & on-chain, 7 % discount).
Air-gapped Bitcoin signing devices: SeedSigner+, Rugged Pill, OpenPill and aluminium cases, plus DIY kits. Open-source hardware that keeps your keys offline for good.
Off-grid communication over LoRa radio: nodes, cases and accessories from the 3D printer. Text messages without internet, without a SIM card, without infrastructure.
Hardware signers for Nostr: your keys stay on the device, nothing is signed without a button press. From USB-stick format to air-gapped QR variants.
Seed backups in steel instead of paper: BlockMIT, Washer Stack Box and punch guide for M8 washers. Fireproof, waterproof — built for the next decades.
The Bitcoin shopping cart chip: fits every supermarket trolley and starts conversations at the checkout. Orange-pilling in everyday life.
The piggy bank that lives on Lightning: sats arrive over the network and show up right on the display. Flash it in the browser, connect it to LNbits, start stacking.
Block height, price and more at a glance: the little Bitcoin clock for your desk. Wi-Fi, USB-powered, always on Bitcoin time.
45 minutes one-on-one via video call: SeedSigner setup, self-custody questions, backups or 3D printing. You bring the questions, we sort them out together.