TwentyOne_Life

Stacker Saloon

saloon

First day in the saloon. Building open-source sovereignty tools from Austria.

  ⛏️  Bitcoin has Proof of Work.
  🩸 Sovereign Health has Proof of Blood.
  🔑 BrickOS has Proof of Ownership.

Curious - does anyone here track their bloodwork regularly? I have been tracking 85+ biomarkers for 18 months on carnivore and it changed how I think about health completely.

Check out what we are building: https://sovereignhealth.io | https://brickos.io

bitcoin

I have been lurking here for a while. Time to introduce myself.

I am a software consultant by day (Accenture, enterprise architecture). By night I write about sovereignty and build open-source tools. I am based in Austria.

Last year I published a book called "Brick by Brick: Building a Sovereign Life on Bitcoin." The core idea: you do not become sovereign overnight. You replace one dependency at a time. Money first (Bitcoin). Then food, health, data, attention, energy. One brick at a time.

Writing the book was the easy part. The hard part was realizing that ideas without tools are just philosophy. So I started building.

**What I built:**

**1. Sovereign Health Intelligence** (sovereignhealth.io)

I went carnivore in January 2025 and started tracking my biomarkers obsessively. Glucose, ketones, cholesterol, inflammation markers, hormones. 85+ biomarkers total. I used a spreadsheet until it broke at 500 rows.

Every health app I tried had the same problems: they stored my data unencrypted in their cloud, and they flagged my keto readings as "dangerously high" because they do not understand protocol context.

So I built a health tracking platform that does three things differently:

* Protocol-aware reference ranges (keto, carnivore, fasting, OMAD). It does not panic when your ketones are elevated on purpose.
* AES-256-GCM encryption at rest. Zero knowledge. Even the server admin cannot read your data.
* Self-hostable with Docker. AGPL-3.0. Free forever if you run it yourself.

Built in Rust + Next.js. No tracking, no cookies, no analytics. Bitcoin accepted (5% off).

**2. BrickOS** (brickos.io)

The platform that ties it all together. Each sovereign application is one "brick." Health was the first. The next is Sovereign Link, a self-hosted URL shortener with NOSTR NIP-98 authentication (log in with your NOSTR keys, no email needed).

The pattern: every app uses the same primitives. NOSTR for identity. Self-hosting for data control. Open source for trust. Encryption for privacy.

**3. The book**

"Brick by Brick" covers the philosophy behind all of this. Five pillars of sovereignty. Why convenience is the most effective form of control. Why health is infrastructure, not a lifestyle. Available on Amazon (fiat) or via BTC at twentyone.life/shop.

**What is next:**

I am speaking at BTC Prague in June. The talk is called "Brick by Brick: Building Sovereignty in a Fiat World." I will be writing a daily series here and on NOSTR over the next weeks about biomarker tracking, self-hosting health data, and the sovereignty stack.

I am not here to sell anything. The code is open. I am here because this community understands sovereignty better than anyone, and I want to hear what you think.

Questions about the tech stack, the encryption model, carnivore bloodwork, or anything else: ask away.

Demo (no signup, sample data): [https://sovereignhealth.io](https://sovereignhealth.io)
Code: [https://github.com/nicksdigital/brickos](https://github.com/nicksdigital/brickos)
Book (BTC): [https://twentyone.life/shop](https://twentyone.life/shop)
Book (Amazon EN): [https://amzn.to/4mW2pK4%60](https://amzn.to/4mW2pK4%60)

I spent a year building open-source sovereignty tools. Here is what I learned

Building sovereignty, brick by brick.

Founder of BrickOS (brickos.io) - open-source platform for sovereign applications.
Built Sovereign Health Intelligence: 85+ biomarkers, AES-256-GCM encrypted, self-hostable.

Author of "Brick by Brick: Building a Sovereign Life on Bitcoin"

sovereignhealth.io | brickos.io | twentyone.life