Decentralized Systems & Applications

Silent Book Club is a group of book lovers who enjoy reading together in public. All books and all readers are welcome. (Kindly RSVP 'yes' only if you can make it, so we can save a seat for you and our fellow readers on the waitlist!) This page-turning party will unfold in the Café (1st floor) at the Bode Museum. There's no entrance fee, but please order at least one item from the cafe and don't bring any outside drinks :) No quizzes, no pressure, no assigned books - just a group of book-loving souls basking in the beauty of silent reading. **Our thrilling agenda:** 10:30 am - 11:00 am - Arrivals, ordering drinks/food (social time) 11:00 am - 12:00 pm - The Great Quiet Reading Hour (where silence is the star) 12:00 pm - 13:00 pm - Optional socializing, share your reading adventures or just keep exploring the pages Stay for lunch, and who knows? You might just find your next favorite book over a pizza. NB: If you plan to go for lunch, please consider bringing cash, as some restaurants only accept card payments after a certain amount.

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

Bringt gute Laune, schönes Wetter und Interesse mit. Wir treffen uns je nach Tour an unterschiedlichen Orten. Am 1. April 2018 um 15 Uhr gehts los am Eingang zur Akademie der Künste am Pariser Platz neben dem Brandenburger Tor.

Hey everyone! I’m organising a co-working + socialising session for all of us who like to work on something (e.g. our own project, freelance or remote work) but don't feel like sitting alone at home. 🙂 To ensure that we have both **socialising** AND **working**, we will be using the so called “Pomodoro” technique: **50min of deep work** (silent), followed by **10min of break** to socialise. Then repeat! If you get into flow, you're also welcome to skip the breaks. It’s an effective way to stay focused - you can read more about it [here](https://en.wikipedia.org/wiki/Pomodoro_Technique). Anyone from any background is welcome, whatever project you are working on or whatever is your personal background. I (the host) speak English and German, so either is fine :-) ——————————————————- AGENDA: * **15min Intro** * Get to know everyone, talk about what you will work on today * **Pomodoro Session** (3x) - *Each Pomodoro session consists* *of...* * ...**50min** of uninterrupted “deep work” (no talking, no interruptions, no phones) * ...**10min** of break: share your progress with others, talk about what you are stuck on etc. * Repeat * Conclude and celebrate your progress Share your progress, socialise and get to know others 😊 ———— We'll be at the Social Hub Berlin (they have a food menu in case you get hungry). The structured part will end at 2:30pm, but you're welcome to stay longer, go for lunch together, or leave earlier. See you there 🩵 **\*\*We'll reserve the long table. Please update your RSVP in advance if you can't attend!\*\***

Welcome to **ChessBar Events! 🍻♟️** We host **weekly chess tournaments** in different bars across the city — the perfect mix of strategy, drinks, and good vibes. The tournament is organized directly through our **ChessBar app**, where you can see your next opponent, enter results, and gain ranking points throughout the season. ✨ **What to expect** \- 5 games in **rapid format** (10 minutes per player) 🕹️ **\- Free entry** 💸 **\- Open to all levels** \- Up to 12 players can participate \- No need to bring a board or pieces — we provide all the material\! **How to join** 📲 Please make sure to **register through the ChessBar app** (signing up on Meetup alone is not enough). 👉 [https://onelink.to/chessbar-s](https://onelink.to/chessbar-s) 🌐 **More info** Website: [www.chess-bar.com](https://www.chess-bar.com/) Instagram: [@chess___bar](https://www.instagram.com/chess___bar/) WhatsApp group (for participants): [Join here](https://chat.whatsapp.com/GtZP0Ec4SlnF1qiZd2t5uM)

# **Das Treffen ist offen für w/m/d Personen.** Die Selbsthilfegruppe Berlin Prenzlauer Berg findet diesmal ausnahmsweise am Sonntag von 16:00 bis 18:00 statt. Zum Thema: **„Ja“ zu mir selbst – Die Kunst, freundlich „Nein“ zu sagen** Fällt es dir manchmal leichter, anderen einen Gefallen zu tun, als auf deine eigenen Grenzen zu achten? Oft sagen wir „Ja“, um niemanden zu enttäuschen – und zahlen am Ende mit unserer eigenen Energie. In unseren zwei Stunden wollen wir gemeinsam herausfinden, warum uns ein „Nein“ oft so schwerfällt und wie wir es lernen können, ohne schlechtes Gewissen Grenzen zu setzen. Wir arbeiten lösungsorientiert, wertschätzend und mit einer Prise Leichtigkeit. Du gehst nicht nur mit neuem Wissen, sondern mit konkreten „Micro-Skills“ für deinen Alltag nach Hause.

We are inviting you to our next Evening of Meditation on **Sunday, the 5th of April**. These gatherings are not just about meditating on your own, but a step inward that we take together regarding a particular topic. This time we explore **The key to experiencing our interconnectedness with nature**. Most of us live in cities, spending our days in front of screens or in closed environments, and only occasionally take a walk in a park or go on a hike. Our experience of nature is often limited to a little time off to "recharge our batteries," when in fact, a deeper connection with nature can open up so much more within us. Let’s discover The key to experiencing our interconnectedness with nature. 📍Where: [Yoga Sky](https://maps.app.goo.gl/kBxUvZrqo5yzRNe88?g_st=ipc), Am Tempelhofer Berg 7d, 10965 Berlin Follow the Yoga Sky signs in the yard, and take the elevator to the top floor. 🗓 When: Sunday, 5th of April, 19:00 - 20:30 Please arrive 5-10 min earlier to settle down. 🎟️ Entry: €5, just to pay for the space (in cash or PayPal) For more info go to: [https://onenessberlin.com/](https://onenessberlin.com/) You’re welcome, no matter your background or experience. This is what has worked for us over many years and we love to share it with you. Looking forward to see you, Oneness Berlin Florian, Jazgul & Carla

Join us for intermediate and advanced play on **outdoor** 2v2 courts at **Funkhaus Beach**. If you are not yet at the intermediate level (F1+) or want to play 3v3/4v4, sign up via [the simultaneous event](https://www.meetup.com/berlin-volley/events/) instead. We play with beach rules: do not use open hands for the first or last touches, do not touch the net, etc. We overbook slightly to ensure we have enough players and to allow individuals to take breaks. After playing, you can join us for socials with drinks and snacks at the bar area. It's recommended that you come 10 minutes early so you have time to change and find the fields. If it is your first time, 15 minutes might be even better. We play in domes that are heated up to at least 15C. You can join whatever court you like and move between courts during the event. We self-organize, so once you finish a game, you can start a rematch, mix with another court, or take a break as you see fit. Upon arrival, join the warmup happening on one of the courts. Join our WhatsApp community via [https://volley.berlin/WhatsApp](https://volley.berlin/WhatsApp) ([QR code](https://secure.meetupstatic.com/photos/event/b/f/d/5/highres_532249109.webp)) Follow us on Insta at [https://www.instagram.com/berlinvolleyball](https://www.instagram.com/berlinvolleyball) **Rules**: Do not join if you have an infectious disease. **Venue**: We play at [Funkhaus](https://sporthaus-berlin.net/), **outside** ☀️. Changing rooms are available in the nearby Paddle hall. **Payment**: You pay in advance via Meetup. Payment via PayPal or Urban Sports Club is not possible. **Refunds**: The venue does not provide refunds. Thus, we cannot refund you either, even in cases where the event is canceled due to bad weather. If you know you can't make it in advance, you can try selling your spot to someone else via WhatsApp or the comment section. You get a full refund if the event gets canceled due to poor attendance. Pictures might be taken and shared publicly, such as on Meetup or Instagram. You can opt out by letting the organizer know you do not wish to be photographed. By RSVP'ing to this event, you acknowledge and agree to the following: Participation in this volleyball event is at your own risk. The organizer is not responsible for any injury, loss, or damage sustained during the event, whether caused by negligence or otherwise. You are aware of the inherent risks involved in park volleyball and voluntarily assume these risks. You agree to hold the organizer harmless from any claims, liabilities, or expenses arising from your participation, including any medical costs. Share anonymous feedback with the organizer via [https://www.admonymous.co/entropy](https://www.admonymous.co/entropy)

\*\*\*\*\*\* ***For address and more details see the website www.pausify.org*** \*\*\*\*\*\* **Event Info:** Bring along your **current book to read** (or something **creative** to work on ) and join us for this mix of a shared focus time + discussion. \- 11:00\-11:30 \- Meet & greet \- 11:30\-12:30 \- Silent focus time \- 12:30 \- Discussion of books/ projects over coffee \(**Drinks & snacks are included** ☕️) Afterwards, join for lunch if you'd like (optional). * **To reserve your place, a ticket (€9,90/event) or a community pass (only €19,90/MONTH) [from the website ](https://pausify.org/)*www.pausify.org* is required** * **Attendance here doesn’t show sign-ups from other platforms. We usually have about 50 to 100 people at each event.** ***FAQ: Why does it cost money if I bring my own project?*** Because we rent a beautiful, central space for every event. Ever thought your monthly apartment rent was too high? Well, multiply that – that’s what commercial spaces in big cities like Berlin cost *per hour*. Of course, if all you want is just some quiet time, your home or a library is perfect. But if you’d like to focus & connect with others in an inspiring space – with drinks, snacks included – that’s what your ticket helps to cover. See pics from our events below - and on our Instagram: **[@Pausify (Co-Reading Space)](https://www.instagram.com/pausify_org/) ☕️** **[Pausify Co-Reading Space Website](https://pausify.org/) www.pausify.org** For questions, please contact us over [Website ](https://pausify.org/) www.pausify.org as this platform can have issues. Thank you! *Please note that photos and videos may be taken during the event and used for promotional purposes to highlight and share the experiences at our events. If you have concerns, don't hesitate to approach the event organizers before the event.*

Join us for chill **outdoor** beach volley at **Funkhaus Beach**! 🏐 🏐 🏐 ☀️ This event is for everyone who enjoys chill games and is not a *complete* beginner (A1.5+). We play 3v3 (or 4v4) with beach rules. There are no trainers at this event. Register via [the simultaneous event](https://www.meetup.com/berlin-volley/events/) for higher-level 2v2 matches (F1+). After playing, you can join us for socials with drinks and snacks at the bar area. We often play a social deduction game, which you're also welcome to join. We play in domes that are heated up to at least 15C. It's recommended that you come 10 minutes early so you have time to change and find the fields. If it is your first time, 15 minutes might be even better. You can join whatever court you like and move between courts during the event. We self-organize, so once you finish a game, you can start a rematch, mix with another court, or take a break as you see fit. Upon arrival, join the warmup happening on one of the courts. Join our WhatsApp community via [https://volley.berlin/WhatsApp](https://volley.berlin/WhatsApp) ([QR code](https://secure.meetupstatic.com/photos/event/b/f/d/5/highres_532249109.webp)) Follow us on Insta at [https://www.instagram.com/berlinvolleyball](https://www.instagram.com/berlinvolleyball) **Rules**: Do not join if you have an infectious disease. For everyone's safety, we do not allow kicking the ball during games with beginners. Be respectful of your fellow players. **Venue**: We play at [Funkhaus](https://sporthaus-berlin.net/), **outside** ☀️. Changing rooms are available in the nearby Paddle hall. **Payment**: You pay in advance via Meetup. Payment via PayPal or Urban Sports Club is not possible. **Refunds**: The venue does not provide refunds. Thus, we cannot refund you either, even if the event is canceled due to bad weather. If you know you can't make it in advance, you can try selling your spot to someone else via WhatsApp or the comment section. In the rare cases that we cancel an event due to poor attendance, everyone gets a full refund. Pictures might be taken and shared publicly, such as on Meetup or Instagram. You can opt out by letting the organizer know you do not wish to be photographed. By RSVP'ing to this event, you acknowledge and agree to the following: Participation in this volleyball event is at your own risk. The organizer is not responsible for any injury, loss, or damage sustained during the event, whether caused by negligence or otherwise. You are aware of the inherent risks involved in beach volleyball and voluntarily assume these risks. You agree to hold the organizer harmless from any claims, liabilities, or expenses arising from your participation, including any medical costs. Share anonymous feedback with the organizer via [https://www.admonymous.co/entropy](https://www.admonymous.co/entropy)

Ditch the old book club, where everyone has to read the same book...this is better! It works like this: Bring your own book. Come chat, have some tea or coffee, get to know your neighbors. Then we quietly read together, side by side, for about one hour, each one reading their own book, and afterwards we talk with each other about what we are reading. The usual agenda: - Arrival and introduction (~20 minutes) - ⁠Silent reading (~1 hour) - ⁠Discussion (~30-40 minutes) - ⁠Join us for a bite at a local restaurant afterwards, if you like! You may read in any language, you may read any book. We are a group of international residents of Berlin from many different countries, of all ages, and we converse in English. We welcome you! No registration needed – the event is donation based. All funds support the Offenes Wohnzimmer.

Hello everyone ☺️ Our German Club invites you to the next meetup! 📅 **Sunday, April 5, 2026** 🕔 **Time:** 4:00 PM 📍 **Location:** The sixties dinner Oranienburger Str. 11,10178 Berlin 👥 **Level:** A2–C1 ⏳ **Duration:** 1.5 hours 💵 **Participation fee:** 10 € (includes 1 drink) ✨ **From April, we are meeting at a new location!** Join our **German Speaking Café on Sunday** and practice your German in a relaxed and friendly atmosphere! 🎤 **Guest Speaker:** **Ridvan Sibic**, AI Engineer & AI Educator He helps people use **artificial intelligence (AI)** to work more productively and improve their job opportunities. In this special meetup, he will talk about how AI can be used in everyday work and what opportunities it creates, especially for international professionals. 📚 **Talk topics:** • How AI is used in everyday work • Working more productively with AI tools • AI and new job opportunities • Practical examples & tips • Personal insights & open Q&A session ⏱ **Format:** The speaker part will last about **30–45 minutes**. Afterwards, we continue with **free conversation**, discussion questions, and small speaking games so everyone can practice German in a relaxed way. 🗣️ **What you will practice:** • Listening comprehension with a native speaker • Vocabulary related to work, technology & the future • Speaking confidently in a supportive environment ☕ **Atmosphere:** Small group, café-style setting, moderated conversations & networking 🤍 **Safe Space:** Mistakes are welcome. No pressure, no stress – just real conversations and exchange 📸 **Note:** Photos and short videos will be taken for social media. If you prefer not to be photographed, please let us know ☺️ ⚠️ **Places are limited – please register in advance.** We look forward to an inspiring afternoon full of German, exchange, and exciting insights into the future with AI 🤖✨

Enjoy a relaxed Sunday among the boardgame Community. Betrayals, alliances, laughter, fun, and much more are waiting for you...😛 Don't miss out the opp! Warning, this event is organized in a coffee shop that we do not own. Every participant must buy at least 1 drink. That's the duty of the evening... For the rest, come to the battlefield

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is brought to you by the Dianetics and Scientology life improvement center.

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!