21 Ways

Bitcoin is different things to different people. 21 Ways is my attempt to embrace this prismatic nature of Bitcoin, exploring 21 different ways to look at Bitcoin. It is an ambitious project, trying to dive deep into Bitcoin’s different facets, including its roots, pre-history, history, civil war, technologies built on top of Bitcoin, surrounding economic thought, and much more. You can support me on Patreon if you want to have a look behind the scenes and get a glimpse of this work in progress.

21 Lessons

21 Lessons is a bit of an unusual book. But hey, Bitcoin is a bit of an unusual technology, so an unusual book about Bitcoin might be fitting. This book came to be because of one simple question: What have you learned from Bitcoin? I tried to answer this question in a single tweet. Then the tweet turned into a tweetstorm. The tweetstorm turned into an article. The article turned into three articles. Three articles turned into 21 Lessons. And 21 Lessons turned a book.

Bitcoin Resources

While falling down the Bitcoin rabbit hole I tried to absorb as much content in the form of books, articles, and podcasts as humanly possible. Bitcoin Resources is my attempt to catalog and signal-boost the best and most insightful content in the Bitcoin space. Since its inception, a growing number of people have started to contribute by selecting and curating content.

Bitcoin Quotes

Bitcoin Quotes is an experiment in micropayments around a growing collection of Bitcoin-related quotes. As of this writing, 300+ quotes have been sourced and indexed, in both audio and written form. The source of each quote will be revealed upon paying ~2¢ in sats. I hope that these quotes will inform, inspire, and delight those who stumble upon them. There is also a rudimentary API if you want to integrate these random quotes into a project of yours. Follow the twitter bot of this project to get random quotes in your timeline.


Einundzwanzig - the German word for 21 - is a collaboration of multiple German-speaking bitcoiners, started by Markus and myself. Started as a simple weekly podcast focused on news in the Bitcoin space, the project continues to morph, evolve, and expand. In addition to the weekly news show, Einundzwanzig now also dives deeper into some topics by interviewing various experts in the German-speaking Bitcoin world. We also started to release readings of the best Bitcoin content, thanks to the growing availability and quality of German translations.

21 Lektionen

Since 21 Lessons is released under a permissive creative commons license, it has been translated into multiple languages. 21 Lektionen: Meine Reise in den Bitcoin Kaninchenbau is based on the German translations of Rene and CryptoMulde, revised and adapted by myself.

Quotable Satoshi Twitter Bot

Building upon the great work of the Satoshi Nakamoto Institute, I wrote a twitter bot to disseminate the most insightful and interesting quotes of Satoshi Nakamoto. Simply follow @QuotableSatoshi on twitter to get historical quotes from the inventor of Bitcoin in your timeline.

Contribution: The Bitcoin Times

Launched by Alex Svetski in 2019, The Bitcoin Times is a publication that distills complex topics in the world of Bitcoin into digestible pieces. As of this writing, two editions have been published. I was one of the co-authors of the second edition, along with Rory Highside, Nic Carter, Aleks Svetski, Robert Breedlove, Dan Held, Connor Brown, and Hass McCook.

Contribution: Citadel 21

Citadel21 is a Bitcoin cultural zine launched by Hodlonaut and Katoshi in May 2020. Its mission is to pull nuggets of high signal content out of the noisy chaos. I wrote an optimistic letter to bitcoiners around the globe, published in the first volume, and a piece on identity and pseudonymity, published in the fourth volume.

Contribution: 21ism Bitcoin Art Collective

21ism aims to celebrate artists across mediums, inspired to create by the ultimate expression of freedom – Bitcoin. Art is one of the languages it speaks & every month, 21ism takes a spin on the “Creative Carousel” to feature new Artists. I had the pleasure and the honor to be the first featured writer. My article “What is 21ism?” is accompanied by a multitude of visual and multimedia art that make the words shine in more ways than one.

Code Contributions

When I’m not writing I try to contribute to open source projects where I can. Apart from trivial fixes and contributions in various projects, I’ve worked on adding Tor and Dojo support to Samourai Wallet’s Sentinel app for iOS (see video). I also made some corrections to BIP 2, BIP 16, and BIP 69. I recently joined the Swan engineering team and published a set of extended public key tools as open source software. Follow me on GitHub to see what I’m up to.