Decentralized Systems & Applications

Some people go to pubs. Some people conquer galaxies, build empires, trade spices, or outsmart dragons. Nerdy Fridays are our open board game nights for anyone who prefers strategy over small talk and dice over disco lights. Come solo or bring your crew. We’ll help you find a table, explain the rules, and match you with a game that fits your vibe. From light party games to deep strategic battles, the shelves are open. Entry fee: 50 CZK if you drink something, 100 CZK if not (includes access to games and rule explanation) Friday nights don’t have to be loud. They can be legendary. 🎲✨

**The most enjoyable dance friending event on a Friday night 🌤️💃✨** This is an OPEN-AIR event! 🌤️ We dance outdoors, but we are always 100% rain-protected. The night starts at 7:00 PM with chill music, socializing, and basic footwork. If you want to level up your dancing, be there at 7pm sharp!! Later, we flow into casual dancing, mixing European classics (Waltz, Polka) with modern Balfolk and chill Latin vibes (Forró). ✅ **No experience needed** → Come at 7 PM sharp to learn the basics! 👣 ✅ **No partner needed** → We rotate! Feel free to ask anyone taking a break. 👋 ✅ **No dress code** → Wear comfy sneakers or go completely barefoot. 👟 ✅ **No pressure** → As long as you can sway to the rhythm, you belong! 🌟 ✅ **Free entry** → If you love the vibe, hit us with a 5-star review 🌟 or leave a contribution via QR code (suggested 200 CZK). If you love to move and want to make new friends, simply show up on Friday and let’s dance!! 💃🔥 *Tančírna (pronounced tahn-cheer-nah) comes from the Czech word "tančit" (to dance) and literally means "a place for dancing".* **Pro-tip:** Pack a water bottle to stay hydrated 💧 and a hoodie for when the sun goes down! After we wrap up we go to a restaurant/bar close by for chill socializing. 📍**LOGISTICS**: 6:45pm - MEETING - https://maps.app.goo.gl/rHMiVjy39jLu86k99 7:00pm - DANCING - https://maps.app.goo.gl/vijrXJfBsrAo18Bi8 8:45pm- SOCIALIZING - https://maps.app.goo.gl/aA8t3ED9QnLufs1H6 \-\-\- **Ta nejpohodovější taneční akce na páteční večer** 🌤️💃 ✨ Tančíme venku 🌤️ ale jsme vždycky 100% chráněni proti dešti. Večer začíná v 19:00 pohodovou hudbou a základními kroky. Pokud se chceš ve svém tanci posunout, buď tam přesně v 19:00!! Později plynule přejdeme do volného tance, kde mícháme evropské klasiky (valčík, polka) s moderním balfolkem a pohodovými latino rytmy (forró). ✅ **Zkušenosti nejsou potřeba** → Přijď přesně v 19:00 a nauč se základy! 👣 ✅ **Nepotřebuješ partnera** → Střídáme se! Neboj se vyzvat kohokoliv, kdo si zrovna dává pauzu. 👋 ✅ **Žádný dress code** → Vezmi si pohodlné tenisky, nebo klidně tanči úplně naboso. 👟 ✅ **Žádný tlak** → Dokud se dokážeš pohupovat do rytmu, zapadneš k nám! 🌟 ✅ **Vstup zdarma** → Pokud tě akce bavila, hoď nám 5hvězdičkové hodnocení 🌟 nebo nám můžeš přispět přes QR kód (doporučený příspěvek je 200 Kč). Pokud se rád/a hýbeš a chceš poznat nové lidi, prostě se v pátek ukaž a jdeme tančit!! 💃🔥 *'* **Pro-tip:** Přibal si s sebou láhev s vodou na doplnění tekutin 💧 a mikinu, až zapadne slunce! Až dotančíme, přesuneme se do nedaleké restaurace/baru na pohodový pokec. 📍LOGISTIKA: 18:45 - SRAZ - [https://maps.app.goo.gl/rHMiVjy39jLu86k99](https://maps.app.goo.gl/rHMiVjy39jLu86k99) 19:00 - TANČÍRNA - [https://maps.app.goo.gl/vijrXJfBsrAo18Bi8](https://maps.app.goo.gl/vijrXJfBsrAo18Bi8) 20:45 - DRINK - [https://maps.app.goo.gl/aA8t3ED9QnLufs1H6](https://maps.app.goo.gl/aA8t3ED9QnLufs1H6)

Hi everyone! Join us on **Friday, May 22nd**, for a screening of **[Solaris](https://www.kinoaero.cz/en?cinema=7&sort=sort-by-data&projection=48265)** at [Kino Aero](https://www.kinoaero.cz/en?cinema=7&sort=sort-by-data). The film begins at **20:00**. **This event is co-hosted by Vera and Club member Bilyana.** We will be at **the** **Kino Aero café from 19.30. Please look either for Vera** (wearing a bright pink/flowery scarf) **or Bilyana** (wearing a beige scarf) - (see also our Meetup photos). The 1972 movie, [directed by legendary Russian filmmaker Andrei Tarkovsky](https://www.criterion.com/current/posts/239-solaris-inner-space?srsltid=AfmBOorCwy5hkiBtALOhGdzYamwHhmvo_cfscwHvufd6K3ZdcwKCyDaf), follows ‘a psychologist [who] is sent to a space station orbiting a planet called Solaris to investigate the death of a doctor and the mental problems of cosmonauts on the station. He soon discovers that the water on the planet is a type of brain which brings out repressed memories and obsessions’ ([here](https://letterboxd.com/film/solaris/)). Come enjoy this screening and stay for a drink and a chat about the film afterward! If you’d like to join us, please **purchase your own ticket** **[here](https://www.kinoaero.cz/en?cinema=7&sort=sort-by-data&projection=48265).** We will be sitting in row 14 seats 9 and 10. Kind request: if you register to attend but are unable to join, please change your RSVP accordingly. Hope to see you there!

Looking to meet new people in Prague and play badminton in a relaxed atmosphere? Join our social badminton event – perfect for meeting people and having fun while playing. 🏸 All levels welcome 🏸 No experience needed 🏸 We mix players so everyone gets a game This is not a competitive tournament – the focus is on socializing and enjoying the game. 📍 Location: Badminton Aréna Skalka 🕒 Time: 20:00–23:00 💰 Price: 350 CZK / 250 CZK with Multisport Spots are limited. 👉 Reserve your spot here: [https://www.bananasport.cz/sportovni-udalost/14](https://www.bananasport.cz/sportovni-udalost/14)

Ready to kick off summer with something different? Join us for a special community workout in Prague — a modified version of the legendary **MURPH challenge**, designed so everyone can enjoy it. No matter if you train every week or just want to try something new with an amazing group of people — this event is made to challenge yourself, meet others and enjoy a great summer evening together. Expect: 🔥 Modified MURPH workout (accessible for all levels) 🏃 Warm-up + run + workout 🤝 Supportive atmosphere & community vibe 🍹 First drink after the workout is on us ☀️ Chill evening at Smíchov riverside We’ll finish the workout together and then move to **The Pitchers** for a relaxed after-workout hangout with drinks, food and outdoor seating. Most people come without knowing anyone — so feel free to join solo 😊 ⏰ Schedule 16:00–17:30 → Workout 17:30–18:30 → Shower & transfer 18:30+ → After-workout chill & first drink on us 🍔🍹 Limited capacity. Come train, challenge yourself and start summer properly ☀️ **🎟️ Registration:** Reserve your spot here → [https://www.bananasport.cz/sportovni-udalost/567](https://www.bananasport.cz/sportovni-udalost/567)

Sing for yourself, Sing for someone, Sing for the moment 🙂Choose your song & let your bathroom artist out :D coz everyone can sing... 👉 Every Friday, we welcome you to join our International Karaoke Nights. Singing or not singing, we guarantee you a lot of fun, making new friends, and meeting international people. 🏅We organise the biggest social events in the Czech Republic where you enjoy amazing cocktails and a variety of drinks, with happy hours waiting for you. 📍LOCATION Tequila Tales Bar & Music Club Újezd 19 118 00 Prague, Czech Republic (Nearest tram stop- Hellichova & Ujezd) ❓Questions❓ Write to https://www.instagram.com/tequilatales_prg/

**Mixed Beach Volleyball 5v5 League – Summer 2026 (Prague 4, DOMYNO Sports)** Join our 8-week outdoor beach volleyball league open to beginners and intermediates. Social level – fun but competitive! 🏐 **5v5 Mixed \| Fridays 19:30–20:30** 📅 **Starts 22.5, Finals 10.7** 📍 DOMYNO Sports, Chýnovská, Praha 4-Lhotka 🚿 Changing rooms & showers on site 🏆 **What you get:** 8 guaranteed games, team shirts, all equipment provided, chance to win sponsor prizes 💰 **Registration fee:** Individual: 1 800 Kč (Early bird 1 530 Kč till 1.5.) Team (5+): 8 000 Kč (Early bird 6 800 Kč till 1.5.) **You can join solo, as a small group, or as a full team (min. 5 players).** ⏰ **Registration deadline: 20.5.2026** **[SIGN UP HERE](https://www.vivasports.cz/beachvolleyball-leagues)**

Join us for the first Symposium of the season to usher in the coming of Spring! 🌞🌻🌳 In antiquity, a symposium was a gathering of friends who came together to recline around a shared table, where wine and conversation flowed freely into the night. Together, they would choose a topic and take turns speaking, listening, and laughing—guided by the rhythms of drink and dialogue. Inspired by this tradition, our Symposium has no set theme. It's an invitation to come together with other curious minds, to offer up questions or ideas, and to vote together on where to begin. Whether you're hungry for connection or simply seeking space to speak and be heard, you're warmly welcomed to join the conversation. Symposium will meet in parks throughout Prague, embracing the sunshine and pleasant weather while we have it. Bring a blanket or something to sit on. There’s no cost to join, but please bring a snack or drink to share, if you're able. Most of all, bring a curious mind and a willingness to learn from the insight of others. Feel free to bring a friend or two--also, children and friendly dogs are welcome! \*\*\* If the weather doesn't cooperate, we'll try to find an alternate venue—so keep an eye on the event chat or your email for updates. Also, despite the origins of the Symposium, our goal is not necessarily to get drunk and the organizer would encourage you not to come with that sole purpose in mind. :) The first 45 minutes of the event will be dedicated to simply getting to know one another, and we highly encourage you to join for this part. We will then vote whether to continue free conversation, to join together in a single conversation, or to split up into multiple groups. Afterwards, you’re welcome to stay or follow onto any spontaneous activity that unfolds. A note on attendance: If you need to cancel, please do so at least a few days in advance and update your RSVP accordingly. This helps honor the host’s efforts and makes space for others who would like to attend. Repeated last-minute cancellations or no-shows may result in being placed on the waitlist for future events.

Join **RSP Adventures** for an unforgettable day trip to the breathtaking Adršpach-Teplice Rocks, one of the most spectacular natural wonders in the Czech Republic. This unique sandstone rock city is famous for its towering cliffs, narrow passageways, deep ravines, crystal-clear lakes, and dramatic rock formations shaped by nature over millions of years. As we hike through this extraordinary landscape, you’ll feel like you’ve stepped into another world—wandering through a maze of giant stone towers, hidden gorges, and peaceful forest paths. The scenery here is so magical that parts of The Chronicles of Narnia: The Lion, the Witch and the Wardrobe were filmed in this very landscape, making it a dream destination for nature lovers and fantasy fans alike. During the day, we’ll also take time to relax and enjoy a traditional Czech meal in a local restaurant, adding a cultural touch to this nature-filled adventure. Whether you’re new to the Czech Republic or looking to discover one of its most iconic natural treasures, this trip offers the perfect mix of adventure, scenery, and great company. Come join **RSP Adventures** and explore the magic of Adršpach and Teplice Rocks with us! Distance : 13km walk (6 hours) Difficulty Rating : Easy to medium 📍 Limited spots available – don’t miss out! **Tour Highlights :** • Hassle-free day trip to Adršpach - Teplice Rocks from Prague • Professional and friendly English or Spanish-speaking tour guide • Transportation by air-conditioned bus • Skip the ticket line • Entrance fee to Adršpach national park • Entrance fee to Teplice Rocks national park • Enjoy specacular views of gorges, forest, and waterfalls, and explore a maze of the bizarre and aptly named rock formations such as Mayor and Mayoress, the Eagle’s Nest, the Devil’s Bridge • Immerse yourself in real-life fantasy movie locations • Guided 13 km hike through one of the most spectacular sandstone labyrinths in Europe • Walk through dramatic gorges, forest trails, crystal-clear lakes, and narrow rock passages • Visit the real-life filming locations from The Chronicles of Narnia: The Lion, the Witch and the Wardrobe • A refreshing escape into nature and one of the Czech Republic’s most iconic landscapes • Enjoy a delicious traditional Czech meal in a local restaurant You can pay for the trip via: • Bank transfer: 7392420507/6363 • Revolut: @augustetqc • Wise: @agustind162 **More information at :** https://www.facebook.com/events/1611631696805773/

This group is for anyone who writes - for any reason. Have a thesis or article you need to write? Trying to finish a novel or an academic paper? This group is for you. We are currently meeting in-person at Locus Workspace. If you have any questions, contact Sonya Lano here or on Facebook or Messenger (https://www.facebook.com/sonya.lano). We start at 9:00, introduce ourselves, and share a few words about what we're working on and what we hope to accomplish during the session. At the end of the session, you can give us a brief recap of how it went. We'll break at noon. The afternoon session starts at 2:00 pm. You're welcome to join both sessions or just one. Please come as close to 9:00 as you can if you come for the morning session. If you come to the afternoon session, we are usually back by about a quarter to 2:00.

**The Easiest room to walk into on a Saturday night** 🤩🌍 We are a welcoming, high-energy tribe of locals, newcomers, and expats alike. Half the room is our stable core, the other is always brand new! We skip the awkward small talk and go straight for REAL connections ✨, naturally transitioning into a great party 🤩 later on. Our rules are simple: No pressure, no city masks, and absolutely no standing alone. Just grab a drink 🍹 and jump right in. You’ll leave feeling energized, connected, and a little bit more like a true Praguer. 😎🤙 👉 If you want to dive deeper, just show up and JOIN our LOCAL WhatsApp community of 250+ Praguers!

Hi All, Come and join us for social running and a coffee! We meet at the main gate of Vystaviste - tram stop Vystaviste Holesovice. We will run in Stromovka. Usually we run around 50mins and it is up to everyone how many kilometres. We welcome all levels of runner. We can all run together or, if there is more of us, we can split into groups and at the end of the run we all meet close to the starting point to go for a coffee to a nice local coffee place (where they also sell cakes and great chocolate). If the weather is great, we can also just sit in one of the outside coffee placces in Stromovka and enjoy the sun. This is where we meet: http://photos2.meetupstatic.com/photos/event/7/7/3/1/600_447930513.jpeg

**The Freshest Speed Friending Event in Town 😎✨** Expand your social circle like eating tapas: bite-sized, fresh, and absolutely zero pressure. 👋 Tapas Topics is built for people who value smaller social circles, natural connections, and a well-structured evening. Get a feel for up to 6 new people a night without going too deep, too fast. We do the heavy lifting for you so you can simply enjoy the freedom of meeting new people with ease. ✅ **10-Minute Rotations** → You get exactly 10 minutes per person. It's the perfect amount of time to see if you click, with an automatic escape hatch to keep everything light and fresh. ✅ **300+ Digital Icebreakers**→ You can wing conversations naturally or simply tap into our app's "conversation menu" for a fresh new topic anytime you want. ✅ **Clear Structure** → No awkward standing around wondering how to start. Everyone gets a comfortable seat, a clear rotation, and a guaranteed chat with all 6 guests. 🔥 **THE BETA TEST** We are perfecting our custom app and rotation flow before transitioning to a paid model. Entry is 100% FREE until the end of June! All we ask in return is your candid feedback afterward. 🕒 **SCHEDULE** 17:30 - Doors open: Arrive early, grab a drink, and log into our web app. 17:45 - The Clock starts! ⏱️ 19:00 - Wrapping up 19:30 - Afterparty 👉 **The Afterparty**: After we wrap up, we naturally transition into our famous social mixer, The Bar Nomads close by. Grab a drink and dive deeper with the people you actually clicked with. (Free entry!) 🍹 👉 **Contacts:** We keep it organic. No automated systems—just ask for their details at the afterparty! 💡 **Good to Know:** The event is hosted in English. It's relaxed, cozy, and open to both expats and locals. Just come as you are! Note: By attending, you consent to being photographed for our community. If you prefer to stay off-camera, no problem—just send me a quick DM before we start.

Sraz pro všechny zájemce o nemonogamní vztahy. Formou neformálního setkání nad dobrotami, které si sami přineseme, budeme diskutovat cokoliv, co nás zrovna bude zajímat. Setkání je vhodné jak pro zkušené nemonogamní/polyamorní osoby, tak pro ty, kteří se teprve chystají podniknout první zvědavé krůčky mimo tradiční monogamní hranice partnerských vztahů. Nejedná se o speed dating, ani jinou formu setkání organizovaného za účelem seznamování. (Ale samozřejmě seznamování není zakázáno) Sejdeme se v blízkosti Letenského jezírka, na travnaté ploše mezi jezírkem a metronomem [https://maps.app.goo.gl/3HCAwYeR7Hk7krNL9](https://maps.app.goo.gl/3HCAwYeR7Hk7krNL9) Poznávací znamení bude malý plyšoví medvídek na dece.

**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** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

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.

**Welcome to Drunken Philosophy** a casual, curious social discussion **Optional topic for this meetup: What's up with all the AI hate?** A recent survey found that 74% of Americans have a negative view of AI, and I want to know why. Come out and debate whether AI is good or bad. My hot take: a labor-saving tool that could potentially help cure cancer gets called dangerous because it might raise unemployment or cause a speculative investment bubble, that tells you a lot more about capitalism and the economic system we live under than it does about the tool itself. As a computer programmer, I think AI is a wonderful tool that has increased my productivity by at least an order of magnitude. I'd go so far as to say Claude Code is the best tool I have ever used. Debate me and name a better one. Is AI potentially dangerous? Yes, but so are a lot of tools. Chainsaws. Steam engines (early ones would occasionally explode and kill everyone in the room). Do you think cavemen sat around debating whether fire could be used as a weapon or for self-harm, and decided not to discover it? I have two friends who hate AI for opposite reasons: one thinks it's a fad and not useful, and the other thinks it's going to take over everything and cause human extinction. Come out tonight, have a friendly debate, and make some friends. No lectures. Friendly crowd. Drop in for one drink and stay if it's fun.

The number of ticks and tick diseases in Ohio have quickly multiplied over the last 10 years. Dean Kreager discusses tick species, tick pathogens, tick-borne diseases, tick bite prevention, and proper tick removal. Kreager is an Agriculture and Natural Resources Educator with OSU Extension in Licking County * Lakewood Public Library (in Hebron)- May 26 at 7pm [https://events.lickingcountylibrary.org/event/tick-talk-29621](https://events.lickingcountylibrary.org/event/tick-talk-29621) * Johnstown public library at 7:00 pm June 8 [https://events.lickingcountylibrary.org/event/ctick-talk-29622](https://events.lickingcountylibrary.org/event/ctick-talk-29622) Free to attend, no RSVP needed

PLEASE NOTE!!! This event will be In-Person for our very 1st Improving collab! If you know the [Columbus Unity group](https://www.meetup.com/columbus-unity-user-group/) location, we'll be at the same place. This is our 1st event and are doing a soft launch with limited attendance. 1st come 1st serve. If you want to be there and we fill up, please email me at [info@thecogg.com](mailto:info@thecogg.com) and I'll be in touch. All street parking is free on Sundays but you can also pay to park in any of the local garages. See image of [parking map here](https://drive.google.com/file/d/1Mr9_LFIggbs-0_Zd3AJTGNqEhgMf2TzQ/view?usp=sharing). \-\-\- On the last Sunday of the month, we're having our usual end-of-the-month social gathering with our GameDev Meetup meeting. There will be announcements and presentations followed by some social networking Let's continue the conversations with good vibes and friends. All are welcomed from all ages and backgrounds to this public event. If we can, we'll be streaming or uploading the video later via our COGG YouTube channel here: [https://www.youtube.com/@TheCOGG/streams](https://www.youtube.com/@TheCOGG/streams) (Also please do subscribe if you have not done so!) No game development experience required! If you are interested in doing a 20 minute game development related presentation, please fill out our form online here: [https://goo.gl/forms/lVdTJZiNJewlPJuj1](https://goo.gl/forms/lVdTJZiNJewlPJuj1) Or e-mail us at info@thecogg.com with the following: Your Name, Company/Affiliation, Name of Your Game/Topic, Description, Tech Needs, and Your Contact. Be sure to check out our Discord for real time news updates: [https://discord.gg/NrBhuNQ](https://discord.gg/NrBhuNQ)

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia