zebra.lucky
/
electrum
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
13498 Commits
2 Branches
0 Tags
69 MiB
 
 
 
 
Tree: a7c948bac1
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'a7c948bac1'
${ noResults }
electrum/electrum/plugins/coldcard
SomberNight 2eb02931ae
hw plugins: log exception at import time (but only if interesting) 		5 years ago
..
README.md plugins/coldcard/README.md: updates and cleanup 5 years ago
__init__.py Support for new hardware wallet: Coldcard 7 years ago
cmdline.py bitbox02: rm some dead code 6 years ago
coldcard.py hw plugins: log exception at import time (but only if interesting) 5 years ago
qt.py qt: move window.get{Open,Save}FileName to util 5 years ago

README.md

Coldcard Hardware Wallet Plugin

Just the glue please

This code connects the public USB API and Electrum. Leverages all the good work that's been done by the Electrum team to support hardware wallets.

Background

The Coldcard has a larger screen (128x64) and a number pad. For this reason, all PIN code entry is done directly on the device. Coldcard does not appear on the USB bus until unlocked with appropriate PIN. Initial setup, and seed generation must be done offline.

Coldcard uses the standard for unsigned tranasctions:

PSBT = Partially Signed Bitcoin Transaction = BIP174

The Coldcard can be used 100% offline: it can generate a skeleton Electrum wallet and save it to MicroSD card. Transport that file to Electrum and it will fetch history, blockchain details and then operate in "unpaired" mode.

Spending transactions can be saved to MicroSD using by exporting them from transaction preview dialog (when this plugin is owner of the wallet). That PSBT is then signed on the Coldcard (again using MicroSD both ways). The result is a ready-to-transmit bitcoin transaction, which can be transmitted using Tools > Load Transaction > From File in Electrum or really any tool.

https://coldcardwallet.com

TODO Items

  • No effort yet to support translations or languages other than English, sorry.
  • We support multisig hardware wallets based on PSBT where each participant is using different devices/systems for signing.

Ctags

  • I find this command useful (at top level) ... but I'm a VIM user.

    ctags -f .tags electrum find . -name ENV -prune -o -name \*.py