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When there was a battle of “ideologies” going on around me during high school – the Nazis (yay central Slovakia!), the metalheads and the punks, the hippies and the normies, I was…

What is the motivation to accept Bitcoin payments in your business and why are many companies and businesses enthusiastic about doing so? If I see an establishment with a Bitcoin sticker on…

Lightning network enables fast and inexpensive Bitcoin payments. I wrote about how to use it in my book Cryptocurrencies – hack your way to a better life (my e-shop, Amazon). In this article,…

I’m assuming you’ve never heard of the law of cryptocurrency isomorphism, because I just made that name up. But it’s been around for a long time, since the first decentralized exchanges (DEX)…

It is natural for people to dream of getting rich quickly. Even more so when they see the ‘crypto bros’ around them who have moved to Dubai, drinking coffee with sheikhs, driving…

Update, August 2026: Hacktrophy is no longer operating and the project has been discontinued. I’ve had several conversations with people about how their favourite cryptocurrency will overtake Bitcoin. And I have often…

Updated 20. august 2024 In part 1, I explained why encrypted messengers are important. In this part, we will look at particular messengers and compare them. Signal Let’s start with probably the…

Recently, there have been some fairly major improvements in the encryption of our communications. Virtually all websites have switched to encrypted communication using the https protocol. If we go to an unencrypted…

The best way to support the local crypto economy is to create a local small-world network. If you want to buy bitcoin for $100, your best bet is to get hold of…

When Buckminster Fuller was asked by a student during a lecture about the possibility of becoming an astronaut, he replied: “You don’t understand, you’ve been an astronaut for a long time. We…