openoms's avatar
openoms openoms@diynodes.com 1 year ago
Planning to show this setup tonight: image Truely FOSS Satochip javacards
GitHub
GitHub - Toporin/SatochipApplet: The open source hardware wallet smartcard - Satochip.io
The open source hardware wallet smartcard - Satochip.io - Toporin/SatochipApplet
 initialized with an airgapped, stateless @SeedSigner . The cards act as a hardware wallet without a display, but with a PIN protected secure element. Mess up the PIN 10 times and the card is bricked. Blanks cost ~2 dollars with chip, ~5 dollars with NFC support. Can compare with #TapSigner, #BitKey and alike. Find the modded images supporting the smartcard readers here:
GitHub
Releases · 3rdIteration/seedsigner
Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff) - 3rdIteration/seedsigner
 Parts: - a generic smartcard reader (here ACR39U https://a.aliexpress.com/_EzkLWc9 + microUSB adapter) - can use the same cards as the SpecterDIY Notes:
Gist
Smartcard applets for Bitcoin and PGP on Debian Linux
Smartcard applets for Bitcoin and PGP on Debian Linux - Satochip javacard applet install
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Replies (6)

openoms's avatar
openoms openoms@diynodes.com 1 year ago
Sparrow Wallet works out of the box image with these
Satochip
Hardware wallet / Bearer cold storage / Seedphrase storage solution
The best NFC smartcard to protect your Bitcoin. Try the Satochip hardware wallet and combine it with its inovative seedphrases manager.
 cards (same when DIY). Even tested on TailsOS. Electrum Wallet also has a fork (close to be merged) which works, not in the Bitcoin Core HWI yet. An iOS and Android app is in the works. Hoping for Nunchuk to follow.
1 replies ↓
openoms's avatar
openoms openoms@diynodes.com 1 year ago
Wrote a quick guide about using an initialized Satochip smart card with Sparrow Wallet:
GitHub
bitcoin-tutorials/satochip at master · openoms/bitcoin-tutorials
Documenting Bitcoin related setups using LND, JoinMarket, RaspiBlitz, Debian and Ubuntu - openoms/bitcoin-tutorials
 As these javacards are essentially $5 hardware wallets (with no screen, but using a Secure Element) are great to give bitcoin in a physical form. This short guide is for the ones receiving them. To initialize the cards one could use TailsOS offline with Sparrow Wallet or Electrum or a modded version of Seedsigner: nevent1qvzqqqqqqypzp2kq0k2s388x4hcghy2k6s7p5j44jnrpxzmaevfwcxvsprzcrx30qyw8wumn8ghj7mn0wd68ytngw4eh5mmwv4nhjtnhdaexcep0qy38wumn8ghj7mt4d36xjurvv4ux2u3wdp6hx7n0dejkw7fwwahhymry9uqzpaca0y00n4qs4k5drhwaz99vuy78r6ddqxu7hwxy8xghj45knkh5jgfqlz
1 replies ↓
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