💰 Fund2-of-3 idea: SeedSigner (QR) + Coldcard (SD) + Sparrow. Fund a receive addr to move real signet coins.
Spinning up your private lane… a fresh, isolated Sparrow + SeedSigner + Coldcard, just for you
coordinator · signet
SeedSigner signer · QR airgap
Coldcard Mk5 signer · SD card
🗂 shared SD → in Sparrow's file dialogs, open /tmp/wb-sd-…
Satochip signer · NFC card
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SATOCHIP
JavaCard HSM · signet
Tap to export the card’s key → add it as your 3rd cosigner. Then tap to sign its leg of a spend (over the SD shuttle).
💡 Build a 2-of-3. Export each signer's xpub → import all 3 in Sparrow (File → New Wallet, multisig). SeedSigner: Export Xpub QR → scan in Sparrow. Coldcard: export to SD, then in Sparrow open the SD path shown below its screen. Register the wallet back on Coldcard via SD. Then fund → build a spend → each device signs its leg.