Decentralized Systems & Applications

Easter Monday still free? Come join us for a walk between two of Utrecht's most beautiful castles! 🏰 We start from the bus stop Haarzuilens, Kasteel de Haar and make our way through nature to Slot Zuylen, two stunning spots that are worth a visit any time of year. The walk is around 2,5-3 hours and there will be plenty of time to explore both castles and take a break in between. A nice way to spend a hopefully sunny day, get some fresh air, and meet some new people along the way.

If you are living in The Netherlands, by now, you may well have noticed the amount of open water. If you enjoy cycling in the city, you may wish to feel safer as you navigate the bridges and canals. And you may also want to get ready for visiting the beach, pools or the many lakes this summer. Learning how to swim takes approx 1 year and it all starts with the very first lesson. New comers enroll via our website and pay € 30,50, this is the first lesson and a goody bag. After the class you agree with the personal swim coach how to continue to obtain your final objectives. Enrolling is only possible via [www.your-personal-swim-coach.nl ](https://www.your-personal-swim-coach.nl/)hence a rvsp via meetup is not enough.

A great ride along the Vecht and Gein rivers. You will love this route. Please ride single file along the winding river as there can be cars around each corner. **Route:** https://connect.garmin.com/modern/course/441606271 GPX: https://drive.google.com/file/d/17-T_pT_GH3QKSFcH1WWgfArvxSdAkVzO/view?usp=sharing **Afterwards:** Drinks at Polder https://maps.app.goo.gl/tbt5DDG7YLU3uWvaA **Rules:** \- Download the route to your cycling computer so you can always find your way home \- Make sure to arrive on time \- Before you ride\, decide as a group how you want to ride: you can split up in a fast and a slow group or stay together\, but make sure to discuss what pace you are going to ride and whether you are going to wait if someone is slower than the group\, or not\.

Samen sporten, gewoon voor de fun, elke week een divers programma, met allerlei verschillende sporten. Je hoeft niet de beste te zijn, maar wel zin hebben om samen te spelen en te leren. Tijdens een training doen we verschillende spelletjes, basketbal, voetbal. volleybal, spikebal, honkbal. Kom je ook, de bal ligt bij jou!! Eerste keer meedoen is altijd gratis, daarna kan je beslissen of dit voor jou is, of niet!! Dus kom een keer proberen. Kan je niet op deze dag, we sporten ook op andere dagen nl Zondag om 9:30 of Maandag om 20:30 Stuur mij een berichtje als je op die dagen een keer wil proberen! The amount of people rsvp'd to this game doesn't match the real number of people at the event, as Meetup is only used for promotion purposes.

New Year, New Sport! 🏐 ​Whether you've never played volleyball before or it’s been many years since you last hit the court, you are very welcome to join our Beginner Group! ​We train every Monday at 9 PM at Gymnasium Bibian Mentel in Zeeburgereiland. ​Come learn the basics, get moving, and meet new people in a fun, relaxed environment. ​Get more info here: ​WhatsApp Group: https://chat.whatsapp.com/EnPEK1bHLiTGdpqz6Vtbm4 ​Instagram: @brazucavolley

This is one for the early birds, but gets you back into the city by 7.45-8am, so you can still make it in time for work. **Route:** https://connect.garmin.com/modern/course/441546437 GPX: https://drive.google.com/file/d/1L3O5N_7rzLdy8d5QbCsnhMnY0EyudJ2n/view?usp=sharing **Afterwards:** Coffee at Coffee Company https://maps.app.goo.gl/WDTpAJ6TurQwFANd8 **Rules:** \- Download the route to your cycling computer so you can always find your way home \- Make sure to arrive on time \- Before you ride\, decide as a group how you want to ride: you can split up in a fast and a slow group or stay together\, but make sure to discuss what pace you are going to ride and whether you are going to wait if someone is slower than the group\, or not\. \- The end of the route is a coffee stop that opens at 7:30am so you can socialize

Get your ticket for only 7,50! Click the link below to secure your spot via Eventbrite: [http://www.eventbrite.com/e/1981929859562/?discount=INT26](http://www.eventbrite.com/e/1981929859562/?discount=INT26 "http://www.eventbrite.com/e/1981929859562/?discount=INT26") **The main programme will take place from 20.00 - 21.30 in the Muzenzaal. It will be in English entirely and feature 6 speakers:** **Read hear for more information:** A.I. seems to be developing both at lightspeed and on a global scale - revolutionary breakthroughs make news headlines almost every day. Generative AI applications like Chat GPT and Midjourney have made the technology accessible for a worldwide audience. But even though these applications seem impressive, they are just the tip of the AI-iceberg. INNOVATE was wondering, how are the AI innovators in the Lifeport Arnhem-Nijmegen region doing? And what are they up to? Well, we did the research and it turns out our region holds some absolutely amazing innovations and stories we can't wait to share with you! So: bring your friends, colleagues, or fellow students and join us for this INNOVATE AI MEETUP - XL Edition and get inspired by the latest breakthrough innovations in AI. Learn how AI innovations from our region add to the development of A.I. as a technology, globally. Let entrepreneurs, designers and innovators in health + high tech + energy + creative demonstrate how they use AI to make impact on scale. **Speakers:** **1.Where is AI in it's development right now, and where is it going from here?** Prof. dr. **Pim Haselager** (Radboud University / Principal Investigator - Donders Institute for Brain, Cognition and Behaviour) mentioned during his previous presentation at INNOVATE a few years ago: ''Humanity and AI are somewhat like a child playing with a chainsaw'' ... How are we handling that right now, and where should we be going from here? **2.Can AI help save hundreds of lives per day?** Every day, around 700 women die from preventable pregnancy-related complications, most of them in low- and middle-income countries where access to ultrasound and trained sonographers is limited. To address these barriers to antenatal screening, **Delft Imaging**, in collaboration with **Radboudumc**, initiated the development of **BabyChecker**, an AI-enabled system that supports novice users in acquiring standardized ultrasound sweeps with a low-cost device and automatically identifying high-risk pregnancies. **Sofia Sappia** is researcher in AI for Medical Imaging at Radboudumc and one of the driving forces behind the Babychecker technology, she will tell us everything about her life saving application of AI. **3.Could an AI-powered app provide a new way to look at businesses?** Arnhem-based creative multi talent Sil van der Woerd (co-founder & creative director, [Studio Birthplace](https://www.studiobirthplace.com/ "https://www.studiobirthplace.com/")) pleads for *a revolution of kindness* with his work. His activistic short films and commercials for organisations like Woolmark and Greenpeace have reached audiences all over the world. Right now he is working on an AI powered app, *Reveal*, that could be a game changer in how we look at businesses worldwide. **4.How can AI turn a congested power grid into a flexible energy system?** Luc Nies (Principal Researcher Artificial Intelligence at Alliander) works at the forefront of the energy transition, where digitalisation is key to keeping the lights on. With the Dutch electricity grid under extreme pressure—long waiting times for new connections, growing risks of overload and blackouts—he explores how AI can help transform our 'old school powergrid' into a 'flexible energy system'. From smart forecasting and energy management systems to new tariff models, Luc shows how hospitals, schools and businesses can remain resilient in an increasingly electrified world. **5.How can AI radically accelerate software development?** Stefan Jansen (Lead, AI Experience Room at Avisi) shows how AI is transforming the way software is built. Where developing a software product once took a year, teams can now go from idea to market in a matter of weeks—or even days. Drawing on real-world projects, Stefan explores how AI-powered tooling reshapes the entire software lifecycle: from requirements and development to testing, deployment and cloud hosting. The result: faster innovation, shorter time-to-market, and a new reality where software teams must rethink what’s possible—and how fast they dare to move. **6.When AI leaves the cloud, what happens next?** As a global leader in semiconductors, NXP Semiconductors is enabling the next wave of AI—where intelligence moves from centralized data centers to *the edge*. From smart edge computing to AI running directly on devices, NXP builds the hardware that makes AI faster, safer and more energy-efficient. With change accelerating at unprecedented speed, this session explores the latest breakthroughs in edge AI—and the strategic choices companies must make now, as intelligence becomes embedded everywhere and waiting is no longer an option. **7.How can the Lifeport region help shape the future of AI in the European Union?** Alexandra van Huffelen, Chair of the Executive Board of Radboud Universiteit and Chair of The Economic Board Arnhem Nijmegen – Lifeport, brings together academic leadership, regional strategy and national policy experience. As former State Secretary for Digitalisation, she offers a unique perspective on how AI can drive innovation while safeguarding public values. In her closing remarks, she reflects on the role of AI in strengthening the Arnhem–Nijmegen region as a leading Lifeport ecosystem—and the choices we must make today to shape that future responsibly. The main programme will be moderated by **Eva Eikhout** (BNN/Vara)

It's time for a new Dutch PowerShell User Group in-person edition. This continues our community events, bringing people together around DevOps, PowerShell scripting, and automation in the Netherlands. Hosted at Rubicon in Leusden, the evening will be a chance not only to learn but also to reconnect with fellow community members. **Speakers** As part of this restart, we have opened a [Call for Papers](https://sessionize.com/dupsug/) to give both new and experienced speakers the opportunity to contribute. The full program will be announced soon. **Agenda** The event will take place on the 8th of April, 2026. All times are listed in CET. * 17:30 – 18:00 Arrival * 18:00 – 18:45 Dinner * 18:45 – 19:00 Welcome from Rubicon / Organizers * 19:00 – 19:45 First Session * 19:45 – 20:15 Break * 20:15 – 21:00 Second Session * 21:00 – 21:30 Networking **Speaker Information** With the restart of DuPSUG, we are opening the stage for both familiar names and new voices. The [CFP](https://sessionize.com/dupsug/) is currently live, and speakers will be announced shortly. **Sessions** As we restart our events, sessions will continue to focus on advanced topics in automation, scripting, and DevOps. ### 1\. Keep secrets away from AI Assistants: Secure Secrets Management with PowerShell \- Jev Suchoi *More often than not, today’s engineering happens inside AI-assisted development environments (IDE's). While this boosts productivity, it also introduces a new risk: secrets leaking into prompts, suggestions, logs, or chat history. This session shows how to set up a local engineering environment using PowerShell so secrets never end up in code, source control, or an IDE’s AI assistant.* *The session starts with pragmatic local engineering patterns: separating configuration from code, structuring local secret files, and using .gitignore correctly to prevent accidental exposure. From there, it moves to a secure-by-default approach using the PowerShell SecretManagement and SecretStore modules. Encrypted vault registration, safe unlocking, and runtime secret consumption are covered without leaking sensitive values into scripts, terminals, AI prompts or sharing them with AI Assistants lurking in your development environment.* *As a demo, secure authentication to Azure and Azure DevOps is demonstrated using PowerShell without exposing credentials to environment variables, clipboard history, or AI tooling. The focus remains on habits and patterns that scale from solo engineers to professional engineering teams.* ### 2\. Modern Powershell module development \- Marko Stanojevic *Demonstrate powershell module template with built in versioning, labeling, CI/CD, devcontainer, VS code settings, built in tasks, Github Copilot and agents instructions, pull request labeling and release notes automatic generation.* *[https://github.com/WarehouseFinds/PSScriptModule](https://github.com/WarehouseFinds/PSScriptModule)* **Location** We are in-person at: Rubicon Leusderend 36 3832 RC Leusden Participation is free, and you are encouraged to attend in person. **Tickets** We kindly ask you to register your attendance through Meetup. Our events are made possible through sponsorship, and accurate attendance numbers help us secure continued support. Please make sure to register if you plan to attend, and update your RSVP if your plans change.

You’re invited to join us for a cycling trip from Utrecht to Amsterdam, following the historic [Dutch Waterline](https://en.wikipedia.org/wiki/Dutch_Waterline). As we cycle through green polders and along quiet waterways, you’ll discover how the Dutch once used water as a powerful defense system, by flooding the land in order to stop enemies from invading Holland and taking all our cheese and bicycles :) We’ll pass old forts and scenic Dutch landscapes, where history and nature are coming together. Come along and experience the beautiful nature and the story of this unique Dutch landscape. All you need is to bring a bicycle, good mood and hopefully some sunscreen! The meeting point is at Utrecht Central Station and from here it is about 55 km cycling to Amsterdam, and we will have some lunch on the way. Hope to see you then!

Join this INNOVATE A.I. XL Meetup and learn about the latest groundbreaking innovations in A.I. in the Arnhem-Nijmegen region! More information and registration via: https://www.eventbrite.com/e/tickets-innovate-ai-meetup-2026-xl-edition-1981929859562?aff=oddtdtcreator

Have you ever noticed how the way you see yourself can change depending on the situation? One moment you feel confident and capable — the next you start doubting yourself after a small mistake or comparison. How do you see yourself on LinkedIn or social media — is it that persona or the quiet inner picture you carry, about who you are? Sometimes that picture feels strong and confident. Other times it becomes surprisingly fragile after criticism, comparison, or a simple mistake. In this meetup we’ll explore two closely related ideas that shape how we experience life: **Self-image** — the picture we hold of who we are **Self-esteem** — how we feel about that picture Through conversation and simple reflection exercises, we’ll look at questions like: * Where does our self-image actually come from? * Why can our confidence rise and fall so quickly? * What role do comparison, expectations, and inner criticism play? * And how can we build a healthier relationship with ourselves? Expect an open and thoughtful discussion — not a lecture. You’re welcome to share your thoughts and experiences, but there’s never any pressure. Listening is just as valuable. If you're curious about how our inner narratives shape our lives, come join the conversation. **Who is this for?** Anyone interested in personal growth, psychology, and understanding how our inner narratives influence our lives. **What to expect** * Guided discussion prompts * Reflection exercises * Practical insights you can apply in everyday life **Tone** Supportive, curious, and judgment-free. **Disclaimer** This is not therapy — It's a thoughtful conversation about being human.

## **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!