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Coldcard over USB#3380

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warp-records wants to merge 20 commits into
cake-tech:devfrom
warp-records:coldcard_usb
Open

Coldcard over USB#3380
warp-records wants to merge 20 commits into
cake-tech:devfrom
warp-records:coldcard_usb

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Description

This PR adds support for restoring a view wallet and signing with a Coldcard device over USB
The full restore wallet and signing flow has been tested end to end and works (tested on a Pixel 9 Pro)

Includes two new packages to facilitate this functionality:
https://github.com/warp-records/coldcard-protocol
https://github.com/warp-records/coldcard-usb
(a fork of leger-usb-plus)

Still a few things to be ironed out:

  • back button needs to be pressed sometimes after selecting coldcard on Hardware wallet screen
  • sometimes says "failed to connect"
  • locale strings
  • error messages

Let me know what you guys think!

@warp-records warp-records marked this pull request as draft July 8, 2026 04:04
@warp-records warp-records marked this pull request as ready for review July 8, 2026 04:04
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