crwalker Karma 446 Created 9 years ago About additive manufacturing, software, blockchain, bay area. chris@ckwalker.com Recent Submissions 1. ▲ Signing Git Commits with Yubikey (medium.com) 3 points · 6 years ago · 0 comments 2. ▲ XPubs and YPubs and ZPubs Oh My (medium.com) 5 points · 6 years ago · 1 comment All submissions on HN · View profile on HN