Blockchain

Join us in person to discuss Bitcoin & cryptocurrencies, blockchain technology and more. Meetup with other community members to learn, build, collaborate on projects and more. IN-PERSON LOCATION: Chuck's Roadhouse Westdale Mall, 1151 Dundas St W Mississauga ON L5C 1C9 Join our[ Bitcoin Bay WhatsApp group](https://chat.whatsapp.com/0HBLzxrIlUuE5E928DOHe9) for more online discussions \*\*\* When you have a moment please read the original Satoshi Nakamoto Whitepaper, that started it all: https://nakamotoinstitute.org/bitcoin \*\*\* About Bitcoin Bay: Welcome to Canada's longest-running Crypto Community. Our mission is to grow the Crypto Ecosystem globally – beginning from our home base in Canada. Bitcoin Bay is a starting point for your crypto journey. If you have something to share, you can find an interested audience. Looking to learn? you can find a great source of knowledge. Do you have a brilliant idea? You could find the perfect partners!

Observability is supposed to help us understand our systems but for many teams it has quietly become one of the most expensive and least flexible parts of the stack. Plenty of organizations take polished SaaS platforms like Datadog to get real value quickly early on, only to hit the same wall later: runaway costs, pricing tied to architectural decisions, and vendor lock-in so strong it makes Rogers and Bell both blush. In this talk, I’ll walk through a real-world case study of a JVM-based production system that migrated away from a Datadog-centric observability setup to an open-source, OpenTelemetry-based platform. We’ll dig into the why behind the move, the architectural decisions that mattered, the mistakes along the way, and how the team ended up with pragmatic visibility into latency, errors, and resource usage at a fraction of the cost. The second half of the talk is practical and forward-looking. I’ll show how OpenTelemetry unlocks real choice by acting as a neutral data plane for your telemetry. From there, we’ll look at modern, off-the-shelf observability backends you can plug in within minutes without rewriting applications or installing new agents. Want to dual-write, swap vendors, or route data somewhere new? This is how you do it without a big-bang rewrite or another long-term commitment with a new vendor. This session is for engineers and CEOs who are feeling the observability cost squeeze, want leverage back from vendors, and are looking for realistic ways to modernize monitoring without lighting their entire stack on fire each time they decide to change their tools of choice. **About the venue** Free Times Cafe has bistro-style seating and a full food and drink menu. Please consider helping to support the venue by planning to have supper during the talk. **Speaker Bio** Alexei Zenin is a Platform Engineering Consultant based out of Toronto, Canada. Over the course of his career he has worked across the Healthcare, Marketing, Video Games, and Banking industries. He loves to tackle hard problems in the distributed systems space with a focus on scaling platforms both from a technical and process perspective. He is a strong advocate for highly maintainable and well tested code while at the same time pragmatically delivering value to the end user. He has contributed to the broader tech community, namely to Confluent’s blogs on Apache Kafka, spoken at Current 2022 in Austin, Texas, and spoken at XP Game Summit 2025 in Toronto, Canada. During his 5 years at Uken Games he contributed to several games like Who Wants to Be a Millionaire and Jeopardy. One title of note he saw from inception to completion was a game for Tim Hortons built right into the official app, Tim’s Word Challenge. Millions of Canadians have played it along with their morning coffee. He also got to work with Netflix on several unannounced games during his time at the studio. Currently, Alexei is working with various clients, both large and small to modernize and streamline their platforms with the most appropriate tools and practices. Outside of his professional life, he gives back to his community by volunteering at UofT. He also enjoys paddleboarding and attending live rock concerts to reset after long coding sessions.

This is a ticketed event. Please register at [this link](https://luma.com/lpikw708). ​Ryan Faulkner explores various papers that address cooperation and safety in multi-agent LLM simulations. Some of the core topics will include: * ​Moral behaviour of agents in high-stakes, zero-sum, and morally charged social dilemmas * ​Governance and sanctioning dynamics and the ways that LLM agents often fail to cooperate and free-ride in common-pool resource game * ​Mechanism design interventions like mediation, contracts, and elected leadership are explored to steer agents toward safer outcomes. ​This research also reveals that LLMs adapt their behavior based on awareness of their conversational partner's identity. ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​​​​If you can't make it in person, feel free to join the live stream starting at 6:30 pm, via [this link](https://www.youtube.com/@Trajectory-Labs/live).

9.00pm-10.00pm Bachata intermediate Instructor :David We switch partners so it's ok if you don't have partner Drop in = $15 You can enjoy unlimited classes any days any time and learn variety of Dances Waltz, ChaCha, Salsa, Bachata Monthly plan = $100 for new members first month Address: 39 Glen Cameron Thornhill, unit 1 647-504-9876 Cell:647-504-9876

This is a ticketed event. Please register at [this link](https://luma.com/e69uao09). ​In his talk, Samuel Simko from ETH Zurich will present his recent work on adversarial defenses for LLMs, developed with the Jinesis Lab (University of Toronto). The talk will cover a series of approaches, ranging from triplet-based contrastive learning defenses to honeypot-style defenses designed to avoid worst-case behavior. He will also discuss patterns observed in contest-winning manual jailbreaking prompts, ideas for tamper-resistant safeguards, and the current limits of attacks, defenses, and evaluation methodologies. ​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​If you can't attend in person, join our live stream starting at 6:30 pm via [this link](https://www.youtube.com/@Trajectory-Labs/live).

March 26th for the OpenClaw Meetup. Fraternal Order of Eagles - 17 Elm St, Toronto, ON M5G 1H1 [https://maps.app.goo.gl/tKyQGWh6pqSu5KTi8?g_st=ic](https://maps.app.goo.gl/tKyQGWh6pqSu5KTi8?g_st=ic) from 5-8p More information to come.. speakers, guests, talks..etc

Toronto AI agent hackathon: build, deploy, transact on-chain. Mac Mini prizes, internships, mentorship, free food. Apply to get in: 👉 [https://luma.com/2bntw4vd](https://luma.com/2bntw4vd "https://luma.com/2bntw4vd") **The Vision** ​We’re bringing the **OpenClaw** and **GOAT Network** stack to Toronto students for a one-day vibe coding sprint with the support of the **CanCode** grant program from the **Government of Canada**. Your mission: Build an AI agent that doesn’t just talk but owns its identity, manages its own wallet and transact with other agents. Leverage Bitcoin’s 99.9% uptime and BitVM2’s mathematical security (viat GOAT) to build agents that handle high-value transactions with zero human oversight. ​ **🏆 The Stakes** ​We aren't giving out stickers and socks. We are giving away **Mac Minis** to the top-performing teams to power your future AI development. We also are looking for the bright minds to join our team and our partner projects as an interns to continue developing what they started at the hackathon. We also will be mentoring and helping those who would like to develop their hackathon projects further as their own startups. ​ **🚀 The Challenge** ​Deploy a "vibe-coded" autonomous agent using: * ​**OpenClaw:** The brain and framework. * ​**ERC-8004:** On-chain identity (Give your agent a soul). * ​**x402:** Agent-native payments (Let your agent get paid). * ​**GOAT Network:** The infrastructure for the agent economy. ​ **📅 Event Details** * ​**When:** 10 am \- 9 pm \|\| March 28 2026 * ​**Where:** George Brown College (exact address will be posted). * ​**Who:** University students * ​**Perks:** Fuel provided (Pizza, snacks, and drinks) + On-site technical mentorship. ### ​ ### **🏆Prizes** * ​Mac Mini + internship opportunities + entrepreneurship opportunities ​​ 🍕 **Food & drinks are on us** — snacks and drinks will be served throughout the event. ​​ **11:00 AM** — 🚀 Doors close. Hacking begins! ​​**11:00 – 11:15 AM** — Welcome & Kickoff ​​ ## ​**​🔧 Workshop Track** ​​11:15 – 11:45 AM \| Why we are building this ​​​11:50 AM – 12:10 PM \| ClawUp \+ Messengers \(Telegram\, Slack\) ​1​​2:10 – 13:20 PM \| Build on GOAT Testnet 3 — Deploy an 8004 & x402 ​​Go from zero to a live, AI-powered transaction on GOAT Testnet fully vibe-coded. ​​**Getting started:** 1. ​​Register on 8004 — link and instructions in the onboarding checklist 2. ​​Confirm your registration on the [GOAT Dashboard](https://goat-dashboard.vercel.app/?utm_source=luma "https://goat-dashboard.vercel.app/?utm_source=luma") 3. ​​Use the Telegram Bot Onboarder to set up your x402 merchant payment 4. ​​Watch live demos and join the idea brainstorming session ## ​**​🛟 Support** ​​You're never stuck. Here's who to reach out to: * ​​**GOAT support team** is available in person and across both Telegram channels throughout the event ## ​**​🔨 13:20 – 6:30 PM \| Build Time** ​​Heads down. Ship something real. Prizes announced mid-session — stay tuned. ## ​**​🏁 6:30 PM \| Submissions Close** ## ​**​🎤 6:40 PM \| Demo Time** ​​Each team gets **3 minutes** to present. Everyone who wants to demo gets a slot — just keep it sharp! ​​After demos, judges have **15 minutes** to deliberate, then prizes are announced live. 🏆 ​​Physical prizes handed out on-site. ## ​**​** ## **🎉 Socials** ​​We'll wrap up with open hang time — meet the builders, the GOAT team, and the community. Stick around! ### **🔥Let's get started!** Apply to get in: 👉 [https://luma.com/2bntw4vd](https://luma.com/2bntw4vd "https://luma.com/2bntw4vd")

Welcome ! OM Chanting is a group practice that uses the transformational power of OM to activate the self-healing potential of participants, promote inner peace and purify the environment. OM Chanting is a free practice, however, donations are welcome to help cover the rent of the studio. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- EVENT DETAILS: address: 283 Spadina Avenue; 3rd floor. ( SE corner of Spadina and Dundas). We will start at 6:30 pm. Please plan to arrive 5-10 minutes earlier. We will be sitting on chairs; you can also sit on the floor if you prefer. You are encouraged to bring a bottle of water. Looking forward to seeing you ! For more information about Om Chanting, please visit: [https://bhaktimarga.org/yoga-meditation/](https://bhaktimarga.org/yoga-meditation/) Much Love, Veda Cell: 416-845-9375

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

**We will discuss day trading, swing trading strategies and tools.** This will not be a presentation format. We will discuss options trading and investing strategies, as well as the skills needed to start. It is a **casual meetup to meet people who are interested in trading or building a career around it, especially algorithmically. No "financial gurus" are welcome.** Join us for a meetup where we share trading ideas, and connect with others who share a common interest in investing. Algorithmic trading is commonly used by large institutional investors and market makers, but it is also accessible to retail traders. It offers several advantages over manual or discretionary approaches—particularly in minimizing psychological errors that often impact human traders. Some of the topics we usually discuss: \- Reasons for investing \- Limitations of being a retail trader \- Practical tools: brokers\, APIs\, data sources\, real\-time implementation \- Brainstorming ideas: strategies that may be working today **Note this even is not sponsored or endorsed by any business where we are meeting. We are just using their space for casual meetup event.** **Please no promotion of MLM, pyramid schemes, self promotion to paid services, affiliate promotion, paid subscriptions or similar stuff.** **Useful Links** * Notion page of [Algo Trading Resources](https://systemetic.notion.site/Algorithmic-Trading-Resources-fe400c5258e440fd8a4d63770d08bc13) **Telegram group for quicker communication:** [https://t.me/+m8BMRABGX74xNmZh](https://t.me/+m8BMRABGX74xNmZh) **Disclaimer:** This meetup is for educational and informational purposes only and should not be construed as professional financial advice. The discussions and materials presented at this meetup are provided as general information and are not intended to be a substitute for professional financial, legal, or tax advice. All participants are encouraged to consult their financial advisor or qualified professionals regarding specific financial issues. None of the organizers, speakers, or participants at this meetup are liable for any financial loss or damage incurred as a result of trading activities or decisions based on the information shared during this event. Trading stocks and other financial instruments involves risk and may not be suitable for all individuals. **CFTC Rule 4.41:** Futures, foreign currency and options trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing one’s financial security or lifestyle. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results. **Non-Endorsement**: References to specific securities, investment strategies, or any financial instruments during the meetup are for illustrative purposes only and do not constitute a recommendation, endorsement, or investment advice by the organizers or speakers. **No Guarantees**: There is no guarantee that the investment strategies discussed will be profitable or protect against loss. All investments involve the risk of loss. **Conflict of Interest**: Presenters or organizers may hold or intend to acquire positions in securities discussed during the meetup, which may create a conflict of interest.

Join us for a relaxed evening where traders of all levels come together to meet new people, share market ideas, and talk about the week’s trends and themes. Whether you’re curious about the overall market condition, looking for fresh setups, or just starting out with trading, this meetup is the perfect place to ask questions, learn from others, and build your network. We’ll open the floor for casual discussions on current market conditions, sector rotation, trade setups, and risk‑management practices, while also giving newcomers a simple, jargon‑light way to understand how to get started in trading. Bring your charts, your ideas, and your questions—no sales pitches, no gurus, just honest conversation among people who love trading and learning from each other.

Join us on March 26th for an exciting **AWS User Group Toronto meetup** focused on **AI-driven development with Kiro**! The evening kicks off with a presentation and live demoes showcasing how Kiro transforms the development workflow, followed by AWS experts sharing the best practices and approaches to get most out of AI-driven development. We'll wrap up with a hands-on workshop and Q&A session — Kiro credits will be provided for participants who want to explore at their own pace. As a bonus, enjoy pizza on us and take home some exclusive Kiro-themed swag! To make the most of the workshop, please come with Kiro pre-installed on your own computer and/or AWS account ready to go. **Agenda:** 6:00-6:15: Welcome Introductions, and community update 6:15-7:00: AI-driven development with Kiro - Presentation and Demo 7:00-7:30: Lessons from field - Best practices and accelerators 7:30-8:00: Workshop set and Q&A **Details:** Address: **18 York St., 7th Floor, Toronto, ON, M5J 2T8** Date: **March 26, 2026** Time: **6:00 pm to 8:00 pm EST** **Speaker:** * **Simran Singh** \- Sr\. Solutions Architect @ AWS * **Divya Jadav** \- Solutions Architect @ AWS * **Abhijith Ramesh Chandra** \- Solutions Architect @ AWS Please plan to arrive between 05:30 PM and 06:00 PM to ensure time to check-in, before the event begins at 06:00 PM. Visitors will need to present a government-issued photo ID to verify their identity and will have their picture taken to receive a visitor badge. Please wear your badge and remember to return all visitor badges to reception at the end of the visit. Parking is available onsite. There is a parking garage located beneath the building. You can pull an access ticket at the garage entrance off 120 Bremner Boulevard or Lower Simcoe Street. If you are arriving via the Union station, the building is conveniently located next to the Union station. Please enter through the main entrance on Bremner Boulevard or via the PATH Network and proceed to the elevators.

Join us for an exciting ServiceNow Toronto Developer Meetup - Spring 2026 Edition! 📅 **Date**: Thursday, March 26th, 2026 🕕 **Time**: 5:30 PM to 7:30 PM EST 📍 **Location**: Scotland Yard, 56 The Esplanade, Toronto, ON **Agenda**: * **Networking -** Get to know your fellow ServiceNow Developers * **Knowledge Sharing** \- Share your insights and learn from others * **Additional details will be announced closer to the event!** Refreshments will be served at the event - Send us a private message to let us know if you have any allergies! **Note**: The event details are subject to change, so please stay tuned for any updates. This event is sponsored by Pentio Inc.

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.

**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)

## **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! ***

**💘 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. 🫶 ✨

**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 **Abstract** Web Forms gave .NET developers a powerful abstraction for building reusable UI controls long before design systems were a thing. Web Components finally bring that same idea to the browser natively. This session explores how the Web Forms mindset translates into Custom Elements, Shadow DOM, and HTML templates. We’ll examine how Web Components enable design systems that work across frameworks, how they differ from server‑driven controls, and why they’re becoming a foundational layer for modern UI. Whether you’re maintaining legacy apps or building greenfield projects, you’ll leave with a practical understanding of how to apply familiar patterns in a modern, standards‑based way. **YouTube Link** TBA

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

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).