Bitcoin Knots enhanced Bitcoin node/wallet software

Bitcoin Core integration/staging tree

Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff)

Energy, Frequency, Vibration. It's my belief that we can use Bitcoin as a telephone equivalent to communicate through space/time (ELI5 - Communicate with future civilizations)

Javascript Bitcoin Wallet. Supports Multisig, Stealth, HD, SegWit, Bech32, Time Locked Addresses, RBF and more!

Security framework compatible with CryptoKit

utilities for Bitcoin SPV proof verification on (many!) other chains

Maker DAI payment processor

The Ethereum Improvement Proposal repository

A new wallet for managing your crypto.

The reference implementation of the ERC-721 non-fungible token standard.

Generate signatures for btc addresses

Audio fingerprinting and recognition in Python