Hi, I'm Gigi.

I'm a bitcoiner and software engineer, 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, 21 Ways. My main focus is on privacy, security, free software, and education.

Unless otherwise noted, all my writing is published under a permissive creative commons license. Remixes and translations are appreciated.

You can support me via my book / patreon / GitHub / directly.
Thank you.

I'm not as active anymore as I used to be, but you can still find me on nostr. The reasons are varied and I hope I'll be more active again eventually.

Below are some of my selected essays. If you are short on time, I'd recommend you:

You can find all essays under /words.