@Egge do you have some plans with npub.cash? It’s super useful tool, but development seems to stopped?

Exactly. Most people don’t understand opportunity cost. View quoted note →

Let's meet on

Pizza Day Prague 2025 | Bitcoin Conference

Pizza Day Prague 2026 | International Bitcoin Conference

May 22-23, 2026 ⚡ Pizza Day Prague is a 2-day international conference marking the 16th anniversary of the first real-world Bitcoin payment

- I will have a workshop on @Linky project there tomorrow.

Now with seamless migration from legacy labeling that was dependent on Google or Dropbox. 🚀 View quoted note →

Come to Prague in June and don’t miss Freedom Tech Summit (powered by @vexl 😎 , event formerly known as dev/hac/day). It’s a highly inspiring and interactive event for people interested in building within the #bitcoin, #cashu, #nostr, and other self-sovereign technology. I’m very grateful that this year I’ll also be giving a short workshop introducing the @Linky project. 🎉

Freedom Tech Summit 2026 | Prague

Freedom Tech Summit (formerly dev/hack/day) - Year 4 of the one-day conference for developers, hackers, and tech enthusiasts diving deep into Bitco...

Satoshi can reveal himself at any time simply by signing a message. Maybe his fingers itch somewhere and he occasionally feels like doing something like that. But quantum computers might make it possible for anyone to eventually create such a signature. In that sense, we will all truly become Satoshi. And finally relieve him of that burden. #weareallsatoshi

Not having control among others is blessing.

@Cashu is great for sharing bitcoin with people who don’t yet have any bitcoin or even a bitcoin wallet. However, when I compose a specific denomination, it ends up being a lot of tokens - in other words, a very long URL that I’m trying to use. The web URL is so long that messaging apps often don’t even recognize it as a link… and it can even look a bit like a scam. In printed form, I can’t use animated QR codes. I understand that using powers of two has many advantages, such as privacy or simpler splitting and merging. However, wouldn’t it make sense in some cases to create one-time exact denominations? Or to keep it composed of many tokens, but allow the mint to temporarily group them into a single alias? Since there is already trust in the given mint, it feels like this wouldn’t introduce additional risk. What do you think? @calle ? 🙏

Banksy strikes again.. The statue looks good to me.

Banksy confirms he is behind new statue in central London

The sculpture in central London of a man walking off a plinth while holding a flag has been drawing crowds.

Another browser extension that shows the prices on any website in real money: https://chromewebstore.google.com/detail/fiat2satoshi/nihiakcjmmnpacepgpfkjbhmndohjkag

We live in a funny time. The governor of the Czech National Bank is giving a lecture about bitcoin. 😀 He says that if they allocate 1% to bitcoin, they can get more value for the same level of risk. Feels good, but don’t forget that fiat is a scam.



Verifying your browser…

Příští pražské setkání @Jednadvacet bude na téma adopce bitcoinu. Vítaný je každý, koho téma zajímá. Představím aplikaci @Linky , se kterou je použití bitcoinu opravdu velmi jednoduché. Po krátké prezentaci bude diskuze - co komu v používání bitcoinu funguje nejlépe nebo co naopak komu chybí. Linky nabízí několik způsobů, jak poslat lidem bitcoin. - Poslat přes Facebook, WhatsApp, Signal nebo jakoukoliv jinou chatovací aplikaci - Fyzicky na NFC kartě - Nebo když už na někoho máte kontakt, tak mu platíte na přímo nebo naopak platbu vyžádáte Přihlásit se na setkání můžete zde:

Praha - Bitcoin meetup #25 - Linky

28/04/2026 18:00 | Restaurace Zlaté sele

Nebo pokud nemáte lightning peněženku:

Praha - Bitcoin meetup #25 - Linky · Luma

Pravidelný neformální meetup pražské komunity Jednadvacet a všech fanoušků bitcoinu. Tentokrát na téma - Linky Představíme aplikaci Lin...

Kdybyste měli chuť pomoct s testováním, tak se můžete přidat do dedikované Signal skupiny:

Signal Messenger Group

Follow this link to join a group on Signal Messenger.

Nebo si to jen tak můžete sami vyzkoušet:

Linky

Linky connects people you care about with simple Bitcoin messaging and payments.

Trezor Suite is introducing Suite Sync. 🎉 Now you can label wallets, accounts, addresses and having that synchronized between various devices without any email. Privately and only based on your hardware device.

Suite Sync in Trezor Suite

Suite Sync sets a new standard in data storage for labels and more.

And desktop now supports BIP-329 labels exports and imports. Mobile hopefully following next month.

At the last bitcoin meetup, I was intrigued by a 60-year-old bitcoiner who wasn’t interested in any lofty ideas about how bitcoin will improve the world. He simply has bad experiences with the state. Many years ago, he didn’t pay a property tax. It was a relatively small amount. However, over the years, they calculated very high interest on it. Eventually, he wasn’t able to pay it at all. Gradually, debt collectors stripped him of all his official assets. He renounced his citizenship - I’m not sure how he manages it, but he says he only has a passport and a driver’s license. He has to renew the driver’s license every five years, and for that purpose he temporarily arranges citizenship again. I might be using some terms incorrectly. In any case, this person lives in the Czech Republic but doesn’t have any bank account, so he pays for everything he can with bitcoin. 🔥 For that reason, he also dreams of better ways to acquire bitcoin around the world. Like peer-to-peer exchanges even in smaller amounts (for security reasons), based just on location, or cooperating with pensioners who have bank accounts, so they can buy bitcoin for him on exchanges and he gives them cash with an extra fee. And btw his mother is over 80 and collects sats through silly online clicking games. Seems like that the age is not a blocker for using bitcoin at all.

Is there some issue with

Testnut mint

It feels weird to see one week old version of an application 😀

Eddie created a “Med-O-Mat” - a honey vending machine. Two things about it caught my attention: 1. The goal wasn’t to use lightning, but to find a working offline payment solution. And bitcoin, with the help of LNbits, turned out to be the best approach. 💪 2. He built it in a small village where most residents are of retirement age and generally not interested in bitcoin. But once he helped the first elderly lady set up an LN wallet and sent her first sats, it triggered a chain reaction. She started showing it to others. It seems that age is not a barrier to bitcoin adoption at all. According to Eddie, locals have even started using these payments in some other businesses. 🔥 https://www.med-o-mat.cz/

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