Hi, I'm Gigi.

I'm a bitcoiner and Austrian, writing words and code for Bitcoin. My first book, 21 Lessons, is one of the most recommended books among bitcoiners. I launched various projects in the bitcoin space and am currently working on my second book. My main focus is on privacy, security, free software, open-source education, and of course: bitcoin.

My work is published under a cc by-sa license.
Support me: book / patreon / GitHub / directly.