Cryptography

Join the Bitcoin District Book Club! We meet every month to explore new and exciting rabbit holes by reading books that are popular with bitcoiners. Join us for a deep dive into *The Fourth Turning: An American Prophecy* by William Strauss and Neil Howe. In this session, we’ll explore one of the most influential modern frameworks for understanding historical cycles and generational change—and why its predictions seem increasingly relevant today. Strauss and Howe propose that history moves in recurring cycles, or “turnings,” each lasting roughly 20–25 years and shaped by generational archetypes. According to their model, societies pass through four phases: a High, an Awakening, an Unraveling, and finally a Crisis—the “Fourth Turning.” This final phase is marked by institutional breakdown, social upheaval, and a restructuring of the political and economic order. We’ll discuss where we might currently sit within this cycle, how past Fourth Turnings (like the Great Depression and World War II era) unfolded, and what this framework suggests about the coming decade. For those interested in macro trends, generational dynamics, and long-term historical patterns, this book offers a provocative lens for interpreting today’s instability—and what may come next. Buy the book on [Amazon](https://a.co/d/0dNwKse5) **Event Notes:** * Discussion Starters: We’ll kick things off with a few key questions around generational cycles and crisis periods, but feel free to bring your own perspectives. * Future Reads: Let us know if you have recommendations for future book club selections! We’ll add them to the list posted [on our website](https://bitcoindistrict.org/bookclub). * Afterwards: Feel free to join us at Pubkey after the meeting to hang out, continue the conversation, and grab some food! **Getting There:** * 🔴🟢🟡 Gallery Place/Chinatown + 2 min walk * Parking: Street & garage parking available nearby

Join us for a one-day trampoline workout designed specifically for women seeking a fun, low-impact fitness routine that improves cardiovascular health, tones muscles, boosts strength, and improves balance. Ages 18 & up; FREE **[REGISTER HERE](https://mdpgparksweb.myvscloud.com/webtrac/web/iteminfo.html?Module=AR&FMID=556001671)** **Activity Code:** [17420-234A](https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmdpgparksweb.myvscloud.com%2Fwebtrac%2Fweb%2Fiteminfo.html%3FModule%3DAR%26FMID%3D556001671&data=05%7C02%7CStefanie.Ascherl%40pgparks.com%7C0a29edbb1112482cc63708de74a0f4eb%7Ca9061e0c24ca4c1cbeff039bb8c05816%7C0%7C0%7C639076431831310698%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ubwJNzRAJOmJiTlp%2BFTTXWIIokDYlOvaQBd4fM6pNYc%3D&reserved=0 "Original URL: https://mdpgparksweb.myvscloud.com/webtrac/web/iteminfo.html?Module=AR&FMID=556001671. Click or tap if you trust this link.")

The Cover6 Community's in-person meetup is back — round three, and we're keeping it exactly where it should be. We're downstairs this time — right by the bar. No conference room, no roped-off section upstairs. Just the right amount of space for real conversation, and drinks already there if you want one. What to expect: • Pure open networking — no agenda, no presentations, no slides • Three hours to connect, catch up, and build real relationships • Genuine conversations with practitioners, newcomers, students, and professionals from across the industry • Good energy, familiar faces — and plenty of new ones When you walk in, skip the elevator. Head straight to the bar and you'll see me close by. Who should come: Anyone in or entering the cybersecurity space in the DMV. It doesn't matter if you've been in the industry for 20 years or you're still studying for your first cert. You belong here. Bring a friend — the more the merrier. Tag someone who needs to be in this room. 📍 AC Hotel by Marriott Arlington National Landing 1999 Richmond Highway, Arlington, VA 22202 (Metro accessible — Blue/Yellow Line, Crystal City Station) We're downstairs — look for us by the bar. 📅 Thursday, May 28, 2026 🕕 6:00 PM – 9:00 PM RSVP so we know how many people to expect. See you Thursday. — Tyrone & the Cover6 Community team

Discover the power of your breath to manage your mind and experience instant peace & calm. Join a 60-minute free Workshop and get a glimpse of the Sudarshan KriyaTM- The breathing technique that is revolutionizing the lives of millions. What you’ll discover at ‘Beyond Breath’ ✔ A taste of the Sudarshan KriyaTM, a breathing technique taught in the Happiness Program ✔ An instant energy booster that awakens & relaxes your mind - Take it home and practice daily! ✔ The peace & calm of a unique guided meditation ✔ Secret keys to manage your mind ✔ The power of surrounding yourself with positive, like-minded people. You can use your breath to master your thoughts and emotions - the key to managing the quality of your day. The Happiness Program At the end of this workshop you may enroll into the Happiness Program (3 days, 3 hours each day) to learn the Sudarshan KriyaTM, a science-backed, rhythmic breathing technique through which you can: Tap into a reservoir of energy and use it as you please! Relieve deep-rooted stresses and anxieties Uplevel your productivity Overcome emotional blocks, move on from past events and shed limiting beliefs Heal your body & gain power over your mind Experience the true state of meditation Learn more about the Happiness Program & the Sudarshan KriyaTM in our introductory workshop 'Secrets to Meditation'. Instagram: artoflivingDMV aolf.live/secretstomeditation

WOW can you believe it's been a full year since we started DC Polyam?! To thank you all from the bottom of our hearts, we are hosting our one-year anniversary celebration on Thursday, May 28th, at Easy Tiger Tavern. Come by yourself, invite your friends, come with your polycule, the more the merrier! We want to celebrate with you, and we look forward to seeing all of the regular and new folks there! 🎊🍾 We always enforce a set of house rules in order to maintain a safe space: * **Respectful Behavior** towards hosts and other guests is required; anyone who violates these rules may be asked to leave the event. * **Expectations:** Check your expectations at the door. Being at this event does not signal sexual availability or indicate any aspect of sexual orientation. Our events are about developing friendships and connections within the community. This is a no cruising event, in order to maintain a comfortable atmosphere for our guests. * **Safe Spaces:** We strive to create a safe space for people of ALL identities, including those who do not identify as polyamorous. * **No photography, video, or recording** of any kind is allowed **without prior verbal consent** of all parties involved. * **Verbal Consent:** Please be sure to ask and wait for a yes before hugging or initiating any physical contact, and encourage each other to speak openly about consent and personal boundaries. This helps foster a culture where personal boundaries are supported and attendees are empowered to speak confidently of their limits. (i.e. “Can I give you a hug?” “No thank you, but I would love a handshake.”) If you have any questions please feel free to reach out!

Come play some casual Commander at Crystal City! Bring your favorite decks for some pickup games, and feel free to bring your trade binders if you'd like! **We play at 2100 Crystal Drive** in Arlington, VA, 22202, which is a seating area that is right next to We, the Pizza in Crystal City. Detailed directions on how to get there: **Directions from the Metro:** If you're taking the Metro, exit at Crystal City. When you come up the first set of escalators, turn left to enter the underground shops and then turn left again after a brief walk. Cross the street, enter the next building, and the seating area will be on the left after passing the Minuteman Press Printing and Marketing shop. **Parking:** If you're driving, garage parking is free after 4 pm. Enter the garage on 2144 Crystal Drive. There will be elevators that take you up to the main level. If you have any questions, please join our Discord for the most up-to-date information: https://discord.gg/fBUWvrAVMv

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

[https://www.nps.gov/grfa/planyourvisit/fees.htm](https://www.nps.gov/grfa/planyourvisit/fees.htm) Be prepared as lately, the National Park has been charging $20 to enter. **There are two sides to Great Falls National Park as it is divided by the Potomac River. For many, this is a must-see place since it is great for landscape photography. Of course, there are other genres like wildlife and birds such as great blue herons, turkey vultures, and others to photograph. The park does not open until 7:00 AM and WIFI is not available. Cell phone service is spotty. An eBird group surveys these wonderful birds every Sunday at 8:00 AM, except during the Christmas Count. Check the eBird list for updates.** **The Group parks in the first lot just past the Visitor Center on the right and walks south toward the Visitor Center then continues down to the three overlooks. Access to the first overlook is not for the faint of heart since the terrain is rocky but it is worth it because it provides a clear view going upstream of the Potomac River. Sometimes, the Group photographs kayakers as they travel up and down the falls.** **The second overlook has easier access to the river and the falls. The third overlook has a couple of sections that have views over the river. Kayakers and birds are visible from this overlook. Park visitors have been known to climb down the rocks to the river, but it is not recommended as it is dangerous. It has been reported that on average seven people drown in the Potomac River every year.** **At the end of this field trip, the Group typically has breakfast at the Silver Diner in Tyson's Corner, 8101 Fletcher St, McLean, VA 22102.** Bring Water, a Tripod, polarizer filter, comfortable shoes, fully charged batteries, and empty cards By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I agree to abide by the rules and regulations (where applicable) of the event location, and I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

Our larger singles party - meet even more people then Speed Dating. Lock & KeyTM Event in Washington DC, Maryland, the FUN way to socialize, make new friends, meet your match… or just have a great time! Woman get a Lock and men get a Key. Meet and mingle as you unlock and get tickets for a prize drawing at the end... but the real prize is all the new people you'll meet! Invite your fun single friends in Washington DC, buy your ticket, and join us to meet local singles Friday May 29 at LOCK & KEY SINGLES PARTY at Astro Beer Hall. \* This is the REAL, Trademarked, Lock & Key Event: Don't be fooled by illegal copycats. Read more: [Lock and Key Events.com](https://www.lockandkeyevents.com/dc-metro-singles-parties/)

Think you aren't flexible enough for yoga? Afraid to get onto the floor? Living with physical aches or restricted range of motion? Then this is the perfect yoga class for you! Explore your body's strengths in a fun, supportive environment while maintaining and growing your range of motion, flexibility, balance, strength, and sense of peace. All are welcome in this therapeutic class. Come ready to try new things, laugh, ask questions, and support each other. **Please reserve your spot at www.piesfitnessyoga.com.** The session is offered both InStudio and OnLine. The Zoom link for the OnLine session will be emailed 15 minutes before class starts to those who are registered at www.piesfitnessyoga.com. **Sign up for sessions must be made at least 2 hours prior to class.** The address is 1322 Prince St Alexandria, VA 22314. Our entrance is located on the side of the building, parallel to West St. **Street parking is available and additional parking is located at Shiloh Baptist church, spaces 3,5,7,9.** The church is located across the street from the studio, on the corner of Duke St. and West St. Discount is available to seniors, teachers, students, emergency responders, and military. All can save by purchasing class packs.

**Studio 151 Learning Lab: Photography Foundations Series — Lighting Basics** Photography starts with light—but understanding how to actually *use* it is where most people get stuck. This session is designed to simplify lighting in a way that makes sense for real-world shooting. Instead of a traditional lecture, we’ll learn through curated video content, pausing to break things down, ask questions, and connect it to real studio work. You’ll see how lighting works, talk through it as a group, and then have the chance to explore it hands-on. *** **What We’ll Cover** * Natural light vs. studio light (and when to use each) * Simple one-light setups that work * How light direction shapes your image * Creating clean, consistent results *** **What to Expect** * Guided video learning (watch + pause + discuss) * Real-time breakdown of concepts in plain language * Hands-on opportunities to experiment * Open networking with other photographers * Snacks will be available, bring a bagged lunch if you like! *** **You’ll Leave With** * A clearer understanding of how light works * Simple setups you can try immediately * More confidence in any shooting environment *** Free to attend (limited spots)

We are going to talk about the books we read—any books, from any genre. Whether it’s fiction or nonfiction, classic literature or something modern, everyone is welcome to share their thoughts, impressions, and favorite passages. It’s a relaxed and friendly conversation where we can discover new ideas and enjoy each other’s perspectives.

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Friday: Advanced Expression End the work week with high-energy **Advanced Rhythm** from **7:00 PM to 8:30 PM**. This session dives deep into the technicalities of Latin and Ballroom styles like Rumba, Samba, or Mambo, designed for dancers who value precision and artistic expression. For $25, you'll receive intensive instruction that pushes your physical boundaries and refines your competitive or performance edge in a high-vibe atmosphere. **When: Every Friday** **Time: 7:00 pm to 8:30 pm.** **1 Dances per month:** **\*Please check the flyer on the group class page for the dance of the month. Or contact us to find out.** **Cost:$25 per person for 90 min.**

Danceintime runs Cuban Salsa Classes & Social Dancing Every Saturday, all year-long. Come at 1:15 pm to sign in. Stay till 4 pm. Some of us go out for coffee or a bite to eat afterwards and everyone is welcome! $15/person. Cash, PayPal, Venmo, Apple Pay, or Card accepted. Chevy Chase Baptist Church; 5671 Western Ave. NW; Washington DC 20015. NOTE: Enter through back corner door of the church. Danceintime classes are great fun. The dance moves are beautiful, fun, and our class creates a bonded community... Check it out! Class will be held every Saturday in December....celebrate the holidays with dance! For more info: danceintime.com/classes Questions? Contact Barbbernsteintalks@gmail.com

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow

**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** https://youtube.com/live/BltmWMH1zG0?feature=share

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

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

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm