Joël Kai Lenz

A blog about the intersection of Bitcoin, FinTech, Finance, AI, and life in general. Trying to find out how transparency, technology, and networks make our lives better.

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Bitcoin

Bitcoin

Stablecoins and Bitcoin

Oct 10, 2025

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8 min read

Stablecoins and Bitcoin

Stablecoins are the biggest use case in crypto next to Bitcoin. This can be an advantage, but there are many dangers we need to be aware of as a community.

Bitcoin

What if Bitcoin Is Never Going to Be More Than Internet Money?

Sep 3, 2025

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6 min read

What if Bitcoin Is Never Going to Be More Than Internet Money?

I’ve been thinking about Bitcoin’s role recently and what if it never becomes more than magic Internet money? What if it only stays a speculative asset?

Bitcoin

The Bitcoin Perception Change

Aug 20, 2025

•

6 min read

The Bitcoin Perception Change

Bitcoin is changing and is not the same anymore as Satoshi may have envisioned it back in 2009. Here’s my latest rant about the matter.

Bitcoin

The Internet Is the Greatest Democracy, but It Needs a Native Currency!

Aug 11, 2025

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9 min read

The Internet Is the Greatest Democracy, but It Needs a Native Currency!

Bitcoin is the Internet’s biggest opportunity to reclaim freedom, censorship resistance, and the nostalgia that attracted so many of us the first time around. Here are my thoughts about this...

Bitcoin

AI Browsers Are to the Modern Web Experience What Bitcoin Should Be to Money

Jul 28, 2025

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15 min read

AI Browsers Are to the Modern Web Experience What Bitcoin Should Be to Money

AI has completely disrupted the Internet. For good or bad. Its impact is shaping modern society as we speak. I believe Bitcoin has the same potential as money, but it seems like we’re missing out and

Bitcoin

Is Retail Missing the Boat?

Jul 23, 2025

•

8 min read

Is Retail Missing the Boat?

Retail investors are nowhere to be seen. I think there are some simple reasons for this. I recapped all of them below for you to read.

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AI

AI

Thoughts About AI Slob

Sep 27, 2025

•

5 min read

Thoughts About AI Slob

At Relai, we recently released a fully AI-made commercial spot, and this got me thinking about AI slob and whether creators are getting lazier...

AI

Perplexity's Comet Browser: Hype or a New Baseline of How We Engage With AI and the Internet in the Future?

Aug 6, 2025

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9 min read

Perplexity's Comet Browser: Hype or a New Baseline of How We Engage With AI and the Internet in the Future?

I’ve been using Perplexity’s new AI browser, Comet, for a few weeks now. This review shares my experiences with it, highlights the downsides we still face, and explores how Bitcoin can bridge this gap

AI

AI Browsers Are to the Modern Web Experience What Bitcoin Should Be to Money

Jul 28, 2025

•

15 min read

AI Browsers Are to the Modern Web Experience What Bitcoin Should Be to Money

AI has completely disrupted the Internet. For good or bad. Its impact is shaping modern society as we speak. I believe Bitcoin has the same potential as money, but it seems like we’re missing out and

background

Jul 28, 2025

AI Browsers Are to the Modern Web Experience What Bitcoin Should Be to Money

AI has completely disrupted the Internet. For good or bad. Its impact is shaping modern society as we speak. I believe Bitcoin has the same potential as money, but it seems like we’re missing out and

Is Retail Missing the Boat?

Is Retail Missing the Boat?

Jul 23, 2025

Opinions, Biases, and Free Speech

Opinions, Biases, and Free Speech

Jul 4, 2023

Internet Culture

Internet Culture

Jun 18, 2023

Random

Random

Life Update: Why It’s Good to Double Down

Jan 1, 2024

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6 min read

Life Update: Why It’s Good to Double Down

I've been quiet on here, and there are many reasons for this. I explained all of them in this post and give you an insight into my life right now. Spoiler: I moved again and started a new role.

Random

Bursting the Bubble

Aug 24, 2023

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6 min read

Bursting the Bubble

I took some time off and stepped away from the Bitcoin social circle to see what I'm missing. I wrote a recap about my experiences and what I think we need to do better in the future.

Random

What I’ve learned from podcasting for two months

Feb 13, 2023

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6 min read

What I’ve learned from podcasting for two months

Today’s blog post is a different fromt he usual bunch. I want to showcase what I’ve learned from podcasting for the past two months and how you can use this to your advantage as well!

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All Posts

Interviews

Fabian Wintersberger – The Austrian View On Bitcoin

Nov 20, 2025

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1 min read

Fabian Wintersberger – The Austrian View On Bitcoin

Fabian Wintersberger is one of the best resources on Substack to read about Bitcoin and macro topics from a TradFi and Austrian School of Economics perspecitve.

Bitcoin

Stablecoins and Bitcoin

Oct 10, 2025

•

8 min read

Stablecoins and Bitcoin

Stablecoins are the biggest use case in crypto next to Bitcoin. This can be an advantage, but there are many dangers we need to be aware of as a community.

AI

Thoughts About AI Slob

Sep 27, 2025

•

5 min read

Thoughts About AI Slob

At Relai, we recently released a fully AI-made commercial spot, and this got me thinking about AI slob and whether creators are getting lazier...

Bitcoin

What if Bitcoin Is Never Going to Be More Than Internet Money?

Sep 3, 2025

•

6 min read

What if Bitcoin Is Never Going to Be More Than Internet Money?

I’ve been thinking about Bitcoin’s role recently and what if it never becomes more than magic Internet money? What if it only stays a speculative asset?

Interviews

Alexander Eser – The Strategy Bitcoin Playbook

Aug 25, 2025

•

1 min read

Alexander Eser – The Strategy Bitcoin Playbook

Alexander Eser is one of the most active Strategy (MSTR) shareholders on social media who can outline what's going on with the Bitcoin-centric company.

Bitcoin

The Bitcoin Perception Change

Aug 20, 2025

•

6 min read

The Bitcoin Perception Change

Bitcoin is changing and is not the same anymore as Satoshi may have envisioned it back in 2009. Here’s my latest rant about the matter.