Bitcoin Output Script Descriptors with Miniscript extension

NFC Push TX

Build "recovery" disk images used to save bricked COLDCARD Mk4 and Q

Micropython module for producing QR codes (in C)

BBQr: Encodes larger files into a series of QR codes so they can cross air gaps

Coinkite Tap Protocol implementation for use with SATSCARD™ and TAPSIGNER™ products

B'SST: Bitcoin-like Script Symbolic Tracer

Bitcoin Core integration/staging tree

Multisig wallet setup for multivendors

The missing safety net for your coins

❄️ Firmware and simulator for Coldcard Hardware Wallet

Python library and command line tool for communicating with your Coldcard over USB

SATSCARD and TAPSIGNER from Coinkite

Taproot & Schnorr Python Library & Documentation.

Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.