Countdown to
HackMeridian
HackMeridian 2026
28 hours of building alongside developers, founders, designers, and technical teams in Lisbon.
across 6 winners
For hackers
Warehouse ONE16, Marvila, Lisbon. ONE16.
Search “Warehouse ONE16” in Google Maps — not the street address. The street address can send you to the wrong place.
From the airport: about 15 minutes by Bolt or Uber.
Open in MapsHacking ends at 12:00 on Mon 26 Oct. That is the submission deadline. No late submissions. Then judging.
A clear README that shows how your project works, including its specs, does most of the work for judges.
You own what you build. Submissions and IP.
Behave professionally and respectfully. Follow the event rules, schedules, and venue requirements. Do not harass, cheat, plagiarize, or misrepresent your work.
Participation and code of conduct. It applies to everyone at the event.
AI-assisted development is allowed.
$30,000 across 6 winners.
Prize amounts are denominated in USD and paid in the equivalent value of XLM.
Staying overnight is recommended but not required.
A limited number of hostel beds are available for builders on travel support. Everyone else books their own.
Anywhere near ONE16. Lisbon's metro and trams make most neighbourhoods practical.
Two paths
Genesis
For builders turning a new idea, early prototype, or problem worth solving into a working product.
Idea → MVPScale
For experienced builders, founders, and teams ready to move an existing product or ambitious concept toward production.
Prototype → ProductTracks on the Genesis path
These tracks belong to the Genesis path. Genesis builders can be part of both. Scale projects don’t need to pick a track.
Your project gets something new out of Stellar's core protocol features.
Your project combines two or more ecosystem tools or projects into something new.
Judging
How judging works: async review of the demo video, pitch deck, GitHub repo, and submission answers. Live pitches are only for finalists, on Wed Oct 28.
Judging priority order: Adoption → Discovery → Continuation.
One rubric scores every project. Each criterion is scored 1–5. Genesis is scored on Track Alignment. Scale is scored on Ecosystem Alignment. The criteria and weights are on the Build page.
Genesis is judged as Idea → MVP. Scale is judged as Prototype → Product.
Speakers · mentors · judges
The people on site for talks, mentoring, and judging.
Sun 25
Check-in 09:00. Hacking 09:00 Sun to 12:00 Mon. ONE16.
Mon 26
Hacking ends 12:00. No late submissions. Then judging. Guests close 16:00.
Tue 27
Founders Day, for invited builders. Marketers in the Arena.
Wed 28
Finalists pitch live at Meridian, Convento do Beato. VC finale.
Thu 29
Meridian day 2. Stellar's yearly conference.
🤝 PARTNERS
Guava
Drips
OpenZeppelin
Stellar Passport
The Aha Company
Grant Fox
DeFindex
57 Blocks
Trustless Work
XOXNO
🚀 FIND YOUR WAY PARTNERS · ROAD TO LISBON
No. Come ready to build and learn fast.
Yes. Scale is designed for teams pushing an existing concept further.
Yes. We will help with team formation during the event.
Yes. AI copilots and agents are welcome.
A clear README that shows how your project works, including its specs. That does most of the work for judges.
How judging works: async review of the demo video, pitch deck, GitHub repo, and submission answers. Live pitches are only for finalists, on Wed Oct 28. Judging rubric.
A limited number of hostel beds are available for builders on travel support. Everyone else books their own.
Anywhere near ONE16. Lisbon's metro and trams make most neighbourhoods practical.
Still have a question? Email meridian@growwithguava.com.
All questions
