Audited & minimal library for creating, signing & decoding Bitcoin transactions.

msigner is an open source Bitcoin Ordinals Partially Signed Bitcoin Transactions (PSBT) signer library. It supports atomic swap of the inscription and provides a simple and secure way to structure Bitcoin transactions for marketplaces.

Self sovereign, secure, powerful, easy to use wallet that utilizes your own node as a backend. Powered by PSBT's and descriptors. Acts as an offline signer using your node as a watch-only wallet.

btclib: a python3 library for 'bitcoin cryptography'

Cove - The simple bitcoin wallet

python-bitcointx is a python3 library providing an easy interface to the Bitcoin data structures

PSBT offline signer, available on Android and CLI

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

A versatile library for Bitcoin, Dogecoin, Litecoin, Dash, BSV and Bitcoin Cash. Supports P2PK, P2PKH, P2SH, P2WPKH, P2WSH, Taproot, with advanced creation, signing, and spending capabilities.

Recursive Rune | Provenance (Etching, minting, claiming, reinscribe, parent/child inscription)

Bitcoin PSBT signer, descriptor exporter and more.

UTXO Splitting, merging, sending with optimized fee according to user's selection (contains 3 levels)

Your iOs device in a Bitcoin multi-sig

A DEX on BTC based on PSBT

BitcoinJ extensions: BIP39/44/47/49/84, bech32

Modern & lightweight implementation of bitcoin standards without rust-bitcoin/miniscript dependencies

Pragmatic Bitcoin Taproot toolkit: Taproot engineering, Inquisition opcode templates (CAT/CSFS/CTV/APO), and covenant protocol research.

RESTful API endpoints for managing marketplace listings and offers, featuring configuration through environment variables, middleware integration, and detailed Swagger UI documentation