• Decentralized Telegram Mini App

    The news of Telegram founder Pavel Durov’s house arrest being lifted and him being allowed to leave France prompted me to figure out how I can write an example Telegram Mini App that only relies on decentralized technologies. After all Pavel Durov was jailed in… Read more

  • How to avoid being hacked like Bybit

    Just over a week ago, Bybit was hacked for nearly $1.5bn: Hackers steal $1.5bn from crypto exchange in ‘biggest digital heist ever’. By now, we understand the hack well enough to summarize updated best practices and lessons learned to reduce the likelihood of similar attacks.… Read more

  • Why Bitcoin is Important

    Bitcoin is still the best cryptocurrency. Let’s look at what makes Bitcoin different. This is written in simple language so that anyone can read, understand, and explain it to their friends. Let’s dive in! Bitcoin as Sound Money Regular money, like dollars or euros, can… Read more

  • You’ve been hacked, what now?

    You work for a crypto company, project or DAO and someone alerts you that you’ve been hacked. What do you do next? Here’s a quick emergency cheat sheet. Read more

  • Crypto 2025 Predictions

    Cryptocurrencies are ending the year 2024 on a very high note. Here are my top 2025 predictions for adoption, institutions and technology Read more

  • Hosting Update

    Next year I’ll be approaching 25 years of blogging, and for the first time ever I made the switch to commercial hosting for the blog. My previous server was getting old, requiring a major Debian update or two. The outdated PHP version made hosting WordPress… Read more

  • UniFi update blocking Tor

    TLDR: UniFi Network Application 7.4.162 may start blocking Tor, even though the corresponding option is disabled. I just spent a couple hours troubleshooting my Bitcoin Lightning node because suddenly (over night) all channels where down. After a while I realized that, while the Bitcoin node… Read more

  • Apple didn’t get it to work

    Apple “decided to not proceed with the proposal for a hybrid client-server approach to CSAM detection for iCloud Photos from a few years ago,” and “concluded it was not practically possible to implement without ultimately imperiling the security and privacy of our users.” This is… Read more

  • Are NFTs securities?

    New perspective that I haven’t heard before, better explains why quite a few respectable people argue that (many) NFTs are securities. Great newsletter as usual by Matt Levine. I like to explain crypto initial coin offerings by saying that “they’re like if the Wright Brothers… Read more

  • Custody & Post-Trade-Infrastructure

    Die HSLU bietet ab Oktober 2023 mit dem CAS Crypto Finance & Cryptocurrencies wieder die Gelegenheit, sich in diesem wichtigen Bereich mit Expertenwissen weiterzubilden. Ich werde das Themen Custody und Post-Trade-Infraktruktur vertiefen, und freue mich jetzt schon wieder auf die anregenden Diskussionen, wenn wir ausgehend… Read more