Blockchain

### **🚀 Keyrus & Friends is back for its 8th edition.** ### 👉 Secure your spot and **register here**: [https://eu1.hubs.ly/H0shDY90](https://eu1.hubs.ly/H0shDY90) ### 🤝 Why Attend? **Network with Decision-Makers** Connect face-to-face with CTOs, CDOs, Data Directors, and AI leaders from Belgium's top organizations. **Intimate, High-Quality Setting**. No crowds, no sales pitches, just genuine connections with peers who understand your challenges. ### 📅 Event Schedule **3:30 PM** \- Welcome & Registration Arrive early, grab a drink, and start connecting **4:00 PM** \- Featured Session Brief insight session to spark conversations **6:00 PM - 9:00 PM** \- Premium Networking Experience Three hours of quality networking with drinks, canapés, and connections that extend beyond the evening. ### 💡 Featured Content Sneak Peek **AI Runs on Data: Building Data Products Right** (5:00 PM) Live demo on creating governed, scalable data products that drive real AI impact. *Additional sessions to be revealed soon, register now to stay informed!* 👉 Secure your spot and **register here**: [https://eu1.hubs.ly/H0shDY90](https://eu1.hubs.ly/H0shDY90) Looking forward to seeing you there!

Would you like to improve your language skills and networking in a casual atmosphere? This event is for you! All languages welcome! Everyone is welcome! The aim is to speak with native/fluent speakers of your target language(s). You'll be around all types of people throughout the whole event. We will be in a private area. A great atmosphere is guaranteed! You'll have to order a drink to attend the event 😀 Don't hesitate to contact us for any further information

We are going back to Brussels, which means we'll once again be teaming up with the [Brussels Java User Group](https://www.meetup.com/brujug/) <3. We'd like to thank [Adesso ](https://www.adesso.be/)for graciously hosting! This edition features **3 talks**! * *Finding Java Memory Leaks with Heap Dumps (JDK 25)* by [Badr Kacimi](https://www.linkedin.com/in/badr-kacimi/) * *Vibe Coding a Home Server on the Raspbery Pi, What AI-Native Development Actually Looks Like* by [Wim De Troyer](https://www.linkedin.com/in/wim-de-troyer-40647b130/) * *Fraud detection on card transactions, Supervised learning with extreme imbalanced data using Python* by [Franck Benault](https://www.meetup.com/members/127308222/) Come join us for this next event! **Schedule** \- 18:00: Doors open \+ Food and Drinks \- 18:45: Intro and BeJUG updates \- 18:50: Talk 1 \- *Fraud Detection* \- 19:05: Talk 2 \- *Vibe Coding a home server on the raspberry pi.* \- 19:30: Little break \- 19:45: Talk 3 \- *Finding Java Memory Leaks with Heap Dumps (JDK 25)* \- 20:30: Mingling \+ Drinks **Topics** **Finding Java Memory Leaks with Heap Dumps (JDK 25)** This talk will demonstrates how to identify, analyze, and fix Java memory leaks using heap dumps and practical JVM diagnostic tools in JDK 25. **About Badr** Badr Kacimi is a Senior Software Engineer at ABN AMRO Bank and GenAI Whisperer at Blue Harvest Belgium. With a strong Java background in large-scale banking and booking platforms, he now builds financial risk models in Python. **Vibe Coding a Home Server on the Raspbery Pi: What AI-Native Development Actually Looks Like** It's been over 3 years since the release of ChatGPT and the innovations in the AI space still do not seem to be slowing down. On the contrary, agentic tooling like Claude Code and Codex have since launched, kept improving, and according to some have now recently reached an inflection point where they can handle long running coding tasks (mostly) unsupervised. Let's find out together if those claims hold up and what that new AI native development looks like. We'll do this by showcasing a very personal case study. Over the past few months, I've developed a home-server setup on my raspberry pi with tons of weird and quirky apps all developped with varying degrees of AI assistance. Join me to find out how that went, how much time I saved (or wasted!) and my biggest take-aways and future plans. **About Wim** Wim is a freelance Software Engineer from Belgium with around 7 years of experience. He focuses on backend web development, using the Spring Framework on a daily basis. He's a firm believer in learning something new everyday (not just about java or spring!) and doing so in public is always the greatest motivator. So he blogs on wimdetroyer.com, and talks occasionally in front of an audience when he can muster up the courage. **Fraud detection on card transactions, Supervised learning with extreme imbalanced data using Python** I will explain: * The context and the goal of this work (supervised learning) * The challenges related to the data (availability and preparation) * The strategies to apply when dealing with severe class imbalance **About Frank** Research and development engineer in computer science, Java developer, passionate about physics, astronomy, and cosmology.

Vous voulez (re)découvrir le yoga Kundalini et ses effets positifs sur votre corps et votre esprit ? Rejoignez-nous ! Défi du matin Yoga Kundalini : **Mardi et jeudi 7h30** 60mn de mantra, pranayama, kriya, et méditation, pour commencer la journée dans d'excellentes conditions, bien centré et prêt à affronter la journée. Inscriptions : **miraclemorningyoga@gmail.com** Où: **La Hulpe, Rue des combattants 125 et/ou via zoom** Apportez votre tapis de yoga et une couverture pour la méditation. **10€/session**, total = 10€ x nombre de semaines Au plaisir de pratiquer avec vous :)

### Network with 130+ marketing leaders & digital innovators. GenAI insights, premium networking, drinks & canapés at Brussels' Tour & Taxis. ### **🚀 Keyrus & Friends is back for its 8th edition.** **👉 Secure your spot and register here: [https://eu1.hubs.ly/H0shDY90](https://eu1.hubs.ly/H0shDY90)** ### 🤝 Why Attend? **Network with Marketing Decision-Makers** Connect face-to-face with CMOs, Marketing Directors, Digital Transformation Leaders, and experts from Belgium's most innovative organizations. **Intimate, High-Quality Setting** Limited to 150 attendees to ensure meaningful conversations. No vendor pitches, just genuine connections with peers navigating the same digital marketing challenges. ### 📅 Event Schedule **3:30 PM** \- Welcome & Registration Arrive early, grab a drink, and start connecting **4:00 PM** \- Featured Session Brief insight session to spark conversations **6:00 PM - 9:00 PM** \- Premium Networking Experience Three hours of quality networking with drinks, canapés, and connections that extend beyond the evening. 👉 Secure your spot and **register here**: [https://eu1.hubs.ly/H0shDY90](https://eu1.hubs.ly/H0shDY90) Looking forward to seeing you there!

Welcome to TechTuesday at HSBXL. It’s where tech enthusiasts hang out, projects get tinkered with, and the occasional debate over the best programming language ensues. Whether you’re an old hand at hacking or just dipping your toes: * **Chats & Code**: Engage in hushed tech tales, showcase your latest digital masterpiece, or simply bask in the mesmerizing rhythm of coders at work. * **Ambient Rhythms**: We curate a backdrop of everything from ambient rock to downtempo electronica. It sets the mood, enhancing the creativity without becoming a distraction. * **Refreshment Protocol**: Club Mate to fuel your creativity, assorted beers for contemplation, and soft drinks for a refreshing pause. Choose your brew. * **Machinery Magic**: Our space boasts more than just computers. Soldering irons hiss and 3D printers hum, telling tales of projects brought to life. * **Knowledge Exchange**: Encountered a tech puzzle? Someone in the room might have just the insight you need. And if you’ve unraveled a digital mystery, consider sharing it. **Note**: The beauty of HSBXL is its welcoming ethos. Member or not, if you’re curious and respectful, you’re one of us. ### Getting to HSBXL HSBXL, the beacon for tech enthusiasts in Brussels, awaits. For your navigational needs, check [here](https://hsbxl.be/enter/). Barrier issues? Broadcast at +32 28804004. For real-time digital dialogues, tap into our [Matrix chatroom](https://matrix.to/#/#hsbxl:matrix.org). ### Bring Along Your tech gear, a project in progress, or simply a mind open to the endless possibilities of tech. That’s TechTuesday at HSBXL. A laid-back evening where tech happens, naturally. See you there.

Drill for oil while preparing for a future beyond fossil fuels. Early profits come from extraction, but long-term success requires investing in green technology. A tense economic strategy game about balancing present gains with future sustainability. [How to Play](https://youtu.be/dMvbTtmKP70?si=RfGbRJ29n4KFZYi-) [BGG](https://boardgamegeek.com/boardgame/169215/peak-oil) [Rulebook](https://tesera.ru/images/items/1217537/2T_PO-rules-EN-170724.pdf) Everyone is welcome! No previous experience or game knowledge needed — I’ll explain all the rules before we start.

(NL) Deze meetup is een initiatief om Bitcoin & Crypto enthousiastelingen en iedereen die simeplweg nieuwsgierig is daarover bij elkaar te brengen voor een leuke tijd en om zo kennis & enthusiasme te delen. Een meetup bijwonen is dé manier om op een gezellige wijze bij te leren en nieuwe (like-minded) mensen te ontmoeten. Iedereen is welkom, zowel de nieuwsgierigen zonder enige voorkennis die met vragen zit als "wat is bitcoin en hoe kan je het gebruiken" als de semi-experts die het graag hebben over selfish mining, taproot of het lightning network. Het event gaat door donderdag 26 Maart in STUK Café in Leuven, vanaf 19u30. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- (ENG) This meetup is an initiative to bring Bitcoin & Crypto enthusiasts and anyone who is simply curious about the topics together for a fun time and to share knowledge & enthusiasm. Attending a meetup is the best way to learn in a fun way and meet new (like-minded) people. Everyone is welcome, both the curious without any prior knowledge who have questions such as "what is bitcoin and how can you use it" and the semi-experts who like to talk about taproot, atomic swaps or the lightning network. The event will take place Thursday 26th of March in STUKCafé in Leuven, from 7:30 p.m.

🚀Forget your job title, forget your powerpoints, and forget your elevator pitch: come join us in BrewDog Brussels on March 26th, 2026 for the Spring Edition of the Data Drinks! 📍The Data Drinks is an informal get-together for Belgium-based Data Professionals from all parts of the datasphere: strategy, leadership, data science, analytics, governance, security, architecture, ... It's a great opportunity to expand your professional network and connect with other data enthusiasts. Plus, you'll be able to get drinks and food to fuel the conversation. ✅Add the event to your work calendar, consider inviting a (data) friend, and if you want to connect with other professionals, you can join the data professionals group: https://lnkd.in/eqkpubKk #DataProfessionals #NetworkingEvent #Belgium #data

Have you always wanted to learn Bachata? Now is the perfect time! Our regular classes at Albert Hall are designed to help beginners progress quickly and master this beautiful social dance that is very popular right now! 💃🕺 We have just started a new session where everyone can learn at their own pace. Come with or without a partner. After the beginner's class, there are more advanced classes, followed by a free dance party for students. 🎉 A nice venue and a warm atmosphere—don't miss this opportunity! 🔥 PROGRAM 🔥 7:00 p.m. → Bachata Beginner NEW (Room 1) 7:00 p.m. → Bachata Advanced (Room 2) 8:00 p.m. → Bachata Beginner II (Room 1) 9:00 p.m. → Bachata Intermediate (Room 1) 💥 10:00 p.m. → Bachata Social Party with DJ Felito on the decks for a wild night of dancing! 🎶 🍍 Fresh fruit buffet provided to recharge your batteries between dances! 📍 Location: Albert Hall 651 chaussée de Wavre 1040 Brussels 💸 Prices: 1 class: €15 10-class pass: €120 20-class pass: €210 Dance party only: €10 (cash) 👉 Registration on site

Making new friends in a new city doesn’t need to be a struggle at all.

​PLEASE SINGUP HERE: [Women in AI Brussels community event · Luma](https://luma.com/zo9bog64?tk=RXQaG1) We’re launching the Belgium chapter of Women in AI Benelux, and you’re invited to join the very first community gathering. ​AI is shaping society rapidly — and women are helping shape that future. ​Belgium sits at a unique **intersection of technology, policy, and governance,** making it a key hub in Europe’s AI landscape. **Our goal is simple: build a community where people who build AI, use AI, regulate AI, and want to understand AI can connect** ​Join us as we bring together the founding community of Women in AI Belgium. ​During this evening, you will: ​\* Meet inspiring women working across the AI ecosystem ​\* Connect with others shaping the Belgian AI landscape ​\* Learn about the vision behind Women in AI Belgium ​\* Become part of a growing network supporting women in AI ​Whether you work in technology, data, research, business, or policy — you are warmly welcome.

How are the dynamics of freedom, safety, risk and reward all interrelated? Is it simply a question of how we can always maximize both freedom and reward? What roles do risk and safety/security play in this system? Can freedom and security be considered simply both as rewards, each with its own values and merits? Are freedom and safety (not) nevertheless zero-sum related, more of one entailing less of the other? How are freedom and risk-taking related? Does risk-taking (not) by definition always mean less security? The concept of risk can mean: 1)the probability of something bad occurring ("frequency") and/or 2)how bad that bad thing can be ("amplitude") What implications do each of these two different types of risk carry regarding both freedom and security? How are freedom, risk and recklessness interrelated? What does the concept "freedom to make the best choices" mean? Is individual freedom at the expense of safety (not) over-prioritized in our current world culture (possibly in some regional cultures more than in others)? Or, seemingly contrarily, is our culture/society in fact overly-obsessed about safety? Is it true (or not) that risk-taking always leads to greater potential reward? Is risk-taking nowadays - possibly as a result of (and/or to promote) capitalist culture? - (not) _ethically_ overvalued? Are some regional cultures in today's world more reward-driven (for example, to become rich, glamorous, famous and powerful) than others? What should be our ideal culture/attitudes regarding rewards and the earning of rewards? What values should we give to freedom, risk, reward and safety in a _war_ situation? In our society/world, should there be _fewer_ or _more_ rules with regards to risk-taking, security and reward? Photo of free solo climber Alex Honnold (practising an activity that should - or should not? - be illegalized?)

One of the defining changes caused by the COVID-19 pandemic is the proliferation of remote work, alternatively known as telework or work from home. Technology had been advancing to the point that many jobs could be done at least in part from home. With a work laptop, video calling, a stable internet connection, and a cyber security program, many office jobs can be done at home without any serious hindrance. When COVID started, many white collar employees became full time remote workers. Six years after the start of the pandemic, many of these people still work at least in part from home. Recent years have seen rising skepticism about remote work, particularly among management. Questions have been raised about whether people working from home are as productive or efficient as those in the office. Similarly, whether work culture can be as effectively created with people often working from home has also become a topic of discussion. Long story short, remote work is, to some degree, here to stay. But to what degree? Do the costs outweigh the benefits? Come discuss this at Brussels Debaters!

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

**Midwest Funk Jam – OhioLockers** A monthly gathering dedicated to **locking, popping, and funk dance culture** in Columbus. We start with a **free fundamentals**, then open the floor for a **dance session and cypher**. Whether you're new to funk styles or an experienced dancer, this is a space to learn, practice, and connect with the Midwest dance community. Hosted by **FlexyStu & DJ Vix** 📍 Oracle Bar 🗓 Last Thursday of every month ⏰ 8:30 PM – 10:30 PM 💸 Free entry 🅿️ Free street parking right outside 🔞 18+ 8:30 – Free Locking & Popping fundamentals class 9:00 – Open dance session & cypher All levels welcome. **Session → Cypher → Funk** IG@Ohiolockers [https://www.facebook.com/groups/1426377732280863/?ref=share&mibextid=NSMWBT](https://www.facebook.com/groups/1426377732280863/?ref=share&mibextid=NSMWBT)

Builders, creators, architects, admins, consultants - come one, come all. This one's for you. We're bringing a little friendly competition to the Columbus ServiceNow community while highlighting the cool things people have built on the platform. Five presenters will take the stage to showcase something they've built, solved, designed, or imagined on the ServiceNow platform - and a panel of judges (plus YOU, our amazing audience) will score them live. So basically, America's Got Talent but make it ServiceNow's Got Talent. Bring a notepad if you'd like 'cause you'll definitely be learning something new. Each presenter gets 10 minutes max to wow the crowd with: • A demo • A real-world business solution • A bold idea • A UX transformation • Or a creative use of the platform Judging Criteria: 🏆 Business Value 🚀 Innovation ✨ User Experience This event is about celebrating ideas, sharing knowledge, and showing how ServiceNow can drive both business impact and meaningful user value. Come learn. Come support. Come get inspired. Refreshments and bites will be provided. And maybe next time… you’ll be on stage.

**💘 Virtual Speed Dating – Columbus, Ohio, USA Singles, Matched by Personality** A simple, fun way to meet local singles without leaving the house. It's straightforward: take a short personality quiz, hop on Zoom, and meet Columbus, Ohio, USA singles in guided one-on-one rounds. Matches revealed after. **Choose your age range to sign up:** - **Ages 18-32** → [REGISTER HERE](https://tempodating.com/product?productId=390.0&productType=onlineSpeedDating&city=Columbus%2C%20Ohio%2C%20USA&groupurlname=pure-local-singles-speed-dating-group&ar=18-32&face_v=19.0) - **Ages 30-46** → [REGISTER HERE](https://tempodating.com/product?productId=390.0&productType=onlineSpeedDating&city=Columbus%2C%20Ohio%2C%20USA&groupurlname=pure-local-singles-speed-dating-group&ar=30-46&face_v=19.0) - **Ages 40-58** → [REGISTER HERE](https://tempodating.com/product?productId=390.0&productType=onlineSpeedDating&city=Columbus%2C%20Ohio%2C%20USA&groupurlname=pure-local-singles-speed-dating-group&ar=40-58&face_v=19.0) - **Ages 55+** → [REGISTER HERE](https://tempodating.com/product?productId=390.0&productType=onlineSpeedDating&city=Columbus%2C%20Ohio%2C%20USA&groupurlname=pure-local-singles-speed-dating-group&ar=55+&face_v=19.0) **⚠️ Your RSVP doesn't confirm a place.** Click your age group link below, register, and take the personality quiz to secure your spot. Limited places. --- 🎯 **Perfect for:** - Busy professionals who value their time - Introverts who do better in one-on-one chats - Anyone who prefers connecting online before meeting in person - Singles in Columbus, Ohio, USA who want to meet locals from home **Event Details** - **Format:** Virtual on Zoom – hosted and structured - **Location:** Your place – couch, desk, wherever works - **Host:** Experienced host running the evening - **Vibe:** Relaxed one-on-one chats with Columbus, Ohio, USA locals **How It Works** 1. **Sign up** – Click the link for your age range above. 2. **Take the personality quiz** – We use it to match you with compatible Columbus, Ohio, USA singles. 3. **Log in** – Join the Zoom session from home. The host runs everything. 4. **Meet your matches** – Rotate through quick chats with compatible Columbus, Ohio, USA singles. 5. **See your matches** – Find out who you clicked with after the event. ⭐ *"Way better than apps. Real conversations with real people."* – Columbus, Ohio, USA attendee --- ✨ Real people, real conversations — all from home. 🫶 ✨

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Communication is everything in life You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. Hosted by the Church of Scientology of Central Ohio 1266 Dublin Road, Columbus, OH 43215 For more information, contact Rhiannon, the Event Host at 614-221-5024

## **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! ***