Controversial Climate Code
A multi-phase buildathon from Recife to COP30 in Brazil for climate action solutions leveraging web3 and AI
All code created is maintained open source
Multi-Phase Journey
Pre-Buildathon Week
One week online for you to form teams, vocalize your intent, and express roles and responsibilities you want in your team.
ReCity, Recife
October 6-26, 2025: Build at ReCity, a pop-up village focused on regeneration. Attend workshops to learn sponsor technologies. Residency spots awarded to the best projects/builders. Opportunity to pitch during World Investor Week Brazil.
Recife Showcase
Final presentations at the end of the Recife event where you showcase your project to judges and peers.
COP30 in Belém
November 10-21, 2025: Add features to your project and showcase at COP30 to global climate leaders and attendees.
🌴 ReFi Pop-Up Residency
October 6 - 26, 2025
Join other builders at ReCity, a pop-up village in Recife, Brazil focused on regeneration, society, economy and environment.
Work alongside fellow climate innovators in a purpose-built community dedicated to sustainable solutions.
Judging Criteria
Technical Innovation
Climate Impact
Scalability & Sustainability
User Experience
Open Source Readiness
🌿 COP30 Belém Showcase
November 10 - 21, 2025
Present your refined climate solutions to global leaders, investors, and climate innovators at COP30 in Belém, Brazil.
This is your opportunity to showcase your project on the world's biggest climate stage and secure funding and partnerships
with key stakeholders committed to climate action.
Make your mark at the most important climate event of the year in the heart of the Amazon.
Prizes & Opportunities
Presenting
- ReCity, Recife, Brazil
- COP30 in Belém, Brazil
Funds
Growing prize pools for each buildathon phase, culminating at COP30 with institutional recognition and funding
Mentorship
Buildathon support to advance projects and post-buildathon mentoring