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ETHIstanbul is a 3 days Ethereum conference & hackathon taking place in Istanbul on September 5–7, 2025.


Registration

Hackathon Begins

End of the Applıcations

Hackathon Judging

GT - Global Results

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timeline

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<h2>ETHIstanbul Hackathon FAQ</h2>We’re excited to welcome you to ETHIstanbul, taking place September 5–7, 2025, in Istanbul. Here’s everything you need to know about logistics, registration, accommodation, food, and how to get the most out of the event.<h2>🔧 Logistics</h2>PlatformsWe use two platforms throughout the event:<ul><li>🟣 TAIKAI→ for registration, project submission, and judging</li><li>💬 Discord → for live support, mentor questions, and announcements</li></ul>🎟 Tickets<ul><li>Hacker participation is free, you just need to apply via <a href="https://taikai.network/" target="_blank">TAIKAI</a>.</li><li>Applications are reviewed and approved in waves every 2 weeks.</li></ul>📍 VenueVenue Name &amp; Address (TBD) 💤 Can I sleep at the venue?Yes, hackers can stay overnight on Friday and Saturday. We’ll have a designated chill zone with basic sleeping arrangements (no beds, no showers). Bring a sleeping bag, toothbrush, and warm clothes. We’ll do our best to make it comfortable.Lockers or a bag check area will be provided on-site. (TBD: update if confirmed.)🛏 Looking for a place to stay?Want a proper bed or interested in crashing with a local? We’ll share a peer-to-peer housing sheet closer to the event. In the meantime, you can look for accommodation options nearby or in Beyoğlu, Karaköy ve Şişhane areas.🍽 Food &amp; DrinksWe’ve got you covered:<ul><li>🥐 Breakfast, 🍱 lunch, and 🍝 dinner are free for everyone</li><li>Snacks, coffee and tea will be available throughout the day</li><li>Vegan/vegetarian options will be available</li></ul>🗺 Istanbul City GuideWe’ll prepare a short ETHIstanbul City Guide to help you explore cafes, restaurants, and nice work spots around the venue. Stay tuned on Discord and email for the PDF version in August.⏳ Timeline (to be updated)Friday, September 5 (GMT+3)<ul><li>10:00 — Hackathon Begins</li><li>14:00 — Opening Ceremony</li><li>16:00 — First Workshops</li></ul>Sunday, September 7<ul><li>10:00 — Submission Deadline</li><li>11:30–15:30 — Judging + Live Presentations</li><li>16:00-18:00 — Closing Ceremony</li></ul><h3>📜 ETHIstanbul Hackathon Rules</h3>Please read the rules carefully, they help keep things fair, fun, and focused for everyone participating.<ul><li>The hackathon starts on Friday, September 5th at 10:00 (GMT+3) and ends on Sunday, September 7th at 10:00 (GMT+3).</li><li>All code must be written during the hackathon. Submitting pre-written code is not allowed.</li><li>Teams can have up to 5 members.</li><li>All team members must be physically present at the event.</li><li>One person from each team must be present at the venue during judging hours on Sunday.</li><li>You cannot copy, use, or submit another team’s code.</li><li>All projects must be submitted through Taikai before the deadline.</li><li>Bounties are awarded by our partners and distributed within 2 weeks after the event.</li><li>You must follow all instructions from ETHIstanbul organizers and volunteers.</li><li>Be respectful and kind, ETHIstanbul follows a strict Code of Conduct. Harassment or abuse will not be tolerated.</li></ul>🧑‍🏫 Mentors &amp; JudgingThroughout the hackathon, mentors will be available both in person and online via Discord to support teams with technical questions, design advice, or feedback on your ideas.If you’re stuck, need help with tooling, or want a second opinion, don’t hesitate to reach out. That’s what they’re here for.🧑‍⚖️ Judging ProcessJudging will take place on Sunday, September 7th in the afternoon.Each project will be evaluated by a panel of judges from our community, ecosystem partners, and core teams.Projects will be scored from 1 to 5 across the following criteria:<ul><li>Technical Execution – How complex or well-built is the project?</li><li>Use Case – Is it solving a real problem or addressing a clear need?</li><li>Originality – Is the idea fresh, unexpected, or creatively implemented?</li><li>Impact / Market Potential – Could this evolve into something meaningful, widely used, or investable?</li><li>Presentation / Wow Factor – Did it make us say “we want to try this right now”?</li></ul>Judges will also consider completeness, clarity of the demo, and whether the project was built within the hackathon timeframe.You can reach us anytime!ETHIstanbul Hackathon TeamIrem @irmkociMustafa @mechul_ethMete @gergin_101

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<h2>🛠 Hackathon Rules &amp; Submission Format</h2> ⚠️ IMPORTANT⚠️ All submissions must be submitted through TAIKAI before the deadline. Once projects are submitted, hackers must do a presentation for each track that they have applied for. Please visit the "Timeline" page for more details.  <h3>📜 ETHIstanbul Hacking Rules</h3><ul><li>ETHIstanbul takes place in real life in Istanbul, Rami Library (for details <a href="https://ethistanbul.io" target="_blank">https://ethistanbul.io</a>).</li><li>In order for your submission to qualify for the hackathon, you must:<ul><li>hold a valid hacker ticket for ETHIstanbul,</li><li>complete your registration at the hackathon front desk after the start of the hacking time until saturday afternoon,</li><li>submit your project over Taikai (not draft, but final submission),</li><li>attend all presentation sessions and present your project.</li></ul></li><li>The hackathon lasts 2.5 days, and all hacking must be done in the hackathon time. You can brainstorm your idea and create your team before the hackathon, but you cannot code or work on the product design (UI / UX) before or after the hack time. This is very important, as you should stop coding and sending commits once the hacking time is over.</li><li>Once you complete your registration, you do not need to be in the hackathon area during the hacking time, but we strongly advice you the otherwise. You also need to give your presentation in real life in the hackathon area (in a special case an online presentation can be arranged, please contact our team if something of such occurs).</li><li>Each team can have at least 1, at most 5 participants. All of the stated work in the submission must be done by these team members, and using the work of additional team members that are not listed on Taikai is a reason to be disqualified. </li><li>You cannot use, copy, or submit another team's code. However, it is possible to use your own code that is written before the hackathon or someone else's open source code (or with their permission). Nevertheless, you need to explicitly mention all codes and similar that are not produced during the hacking time. If you show and use a code as if you have written it in the hacking time while this is not true, you may be disqualified and banned from the hackathon. Also, remember that only codes that are written during the hackathon are used in judging and receive points. </li><li>Judges’ decisions are final regarding all prizes and awards, but all award winning submissions will be inspected in detail after the hackathon by our team for potential fraud. If such a case occurs, then the submission will loose its place and the final rankings will be updated accordingly.</li><li>AI usage in coding is not prohibited, but strongly discouraged, as fully AI written code will not receive points for coding related criteria (such as code quality or technical competence). Thus, we only recommend you using AI in the parts of your project that are not crucial for your submission (such as UI).</li><li>In addition to the rules above, each track and bounty may have additional rules for your project to be considered eligible. You can find more about them in the "Prizes" section.</li><li>Please follow instructions from ETHIstanbul organizers and volunteers and comply with our <a href="https://ethistanbul.io/conduct" target="_blank">Code of Conduct.</a></li></ul> <h3>✅ Minimum Submission Requirements (To Be Judged)</h3><ul><li>A link to your open-source code repository.</li><li>A short demo video (max 90s) or a presentation (max 7 slides) clearly describing your project, its use case, and purpose.</li><li>If applicable, include the contract address(es) or website URLs of your deployed demo (testnet or mainnet accepted).</li></ul> <h3>💸 Bounties</h3><ul><li>The hackathon has 2 main track bounties. Additionally, there exist bounties that are provided by our sponsors. </li><li>A full list of active bounties is shared in the "Prizes" section.</li><li>Additional judging criteria and requirements for bounties can also be found under "Prizes". </li><li>All projects can apply for as many bounties as they wish with the same submission. In order to qualify for a bounty, you must chose the respective subcategory in your submission.</li><li>Each bounty may have additional presentation requirements, also stated under "Prizes". </li></ul> <h3>📝 Submission Guideline</h3>You must submit your project on TAIKAI by Sunday, September 7th at 12:00 (GMT+3).🔔 At least one team member must be present in person at the venue to be eligible to pitch their project.📌 Steps to Submit on TAIKAI:<ol><li>Click “Create Project” on the ETHIstanbul hackathon page.</li><li>Add your team members.</li><li>Select the track(s) and bounties you are applying to by editing the project categories.</li><li>Follow the submission template below.</li><li>Click “Publish” once everything is complete.</li></ol> <h3>📤 Submission Template</h3>This is an example template, and feel free to improvise if you think it will help with your submission. PROJECT NAMEDESCRIPTION (2 lines)CONTACT PERSON (Discord &amp; Telegram handle)CODE REPOSITORY (GitHub or similar)DEMO VIDEO (90 seconds) OR PRESENTATION (max 5 slides)CONTRACT ADDRESSES / LIVE URLS (if deployed)

rules

ETHIstanbul is a 2-days hackathon &amp; conference taking place in Istanbul from September 5 to 7, 2025. It's designed for developers, researchers, and teams working on Ethereum to come together, meet in person, and build.The event is open to anyone working on any Ethereum-related idea. The focus is on collaboration with Istanbul as a meeting point between different parts of the world.<h3>📅 Important Dates (GMT+3)</h3><ul><li>Hacker Onboarding Opens: August 15, 2025</li><li>ETHIstanbul Starts: Friday, September 5th at 10:00</li><li>Project Submission Deadline: Sunday, September 7th at 10:00</li><li>Demo Day &amp; Final Pitches: Sunday, September 7th (afternoon)</li><li>Closing Ceremony: Sunday, September 7th (16:00)</li><li>Bounties Distributed By: within 2 weeks after the event</li></ul> <h3>🏆 ETHIstanbul Hackathon Tracks</h3>At ETHIstanbul, we aim to reward outstanding innovation without restricting builders to rigid categories. Instead of predefined tracks, we’re celebrating the spirit of creativity and impact across the entire Ethereum ecosystem. 1. Real Blockchain Use CasesUse blockchain technology to make a real-world impact.The goal: solve an actual problem with decentralization. A polished UI isn’t mandatory, but recommended. What matters most is showing how blockchain can bring real value to the world.2. Blockchain + AI = ?The 21st century isn’t defined by one revolution, but two: Blockchain and Artificial Intelligence. In this track, the only rule is to combine both in your project. No limits, no restrictions, just your imagination. 💭👉 ETHIstanbul is here to support projects that merge creativity, decentralization, and cutting-edge technology. <h3>👥 ETHIstanbul is open to:</h3><ul><li>Ethereum developers (newcomers &amp; veterans)</li><li>ZK builders and researchers</li><li>Designers, product people &amp; protocol thinkers</li><li>Students, hackers, and indie builders</li><li>Ecosystem teams and open-source contributors</li><li>Any kind of builders</li></ul>All participants must register on Taikai and hold a valid ETHIstanbul hacker ticket to submit projects. To be eligible for judging, teams must submit the following via <a href="https://taikai.network/" target="_blank">TAIKAI</a>:<ul><li>A link to a public code repository (e.g. GitHub)</li><li>A demo video (max 90 seconds) or presentation (max 5 slides)</li><li>(Optional) Live URLs or contract addresses (testnet/mainnet)</li><li>A team contact (Telegram or Discord) for communication during judging</li></ul>All code must be written during the event. Pre-written or plagiarized code will disqualify the submission. <h2> </h2>

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