bitcoin-usb 0.2.0

Wrapper around hwi, such that one can sign bdk PSBTs directly

Wrapper around hwi, such that one can sign bdk PSBTs directly

• This provides an abstraction layer ontop of hwi, such that only bdk is needed from the outside

• Currently supported are

  • Coldcard

• It also provides

  • AddressTypes, which are the commonly used bitcoin output descriptor templates
  • seed_tools.derive_spk_provider to derive xpubs from seeds for all AddressTypes (bdk does not support multisig templates currently https://github.com/bitcoindevkit/bdk/issues/1020)
  • SoftwareSigner which can sign single and multisig PSBTs, this doesn't do any security checks, so only use it on testnet

Demo

Run the demo with

python demo.py

Tests

Run tests

python -m pytest -vvv  --log-cli-level=0

Library Usage

• For xpub derivation bip_utils is used
• For signing a psbt python-bitcointx is used

Install package

From pypi

pip install bitcoin_usb

From git

• Install requirements:

poetry install

• Automatic commit formatting

pip install pre-commit
pre-commit install

• Run the precommit manually for debugging

pre-commit run --all-files