Buildathon Bolivia 2025 - Final Report
Introduction
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Name of our project: ETH Bolivia Buildathon & Conferences 2025
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Link to our website/socials:
Summary of the project
The ETH Bolivia Buildathon 2025 successfully brought together developers, students, entrepreneurs, and Web3 enthusiasts to build innovative solutions within the blockchain ecosystem.
Through workshops, mentoring sessions, and project development, the event fostered talent in Latin America, strengthened the local Ethereum and Arbitrum communities, and generated projects aligned with decentralized technologies. This event positioned Arbitrum as a key ecosystem for builders in Bolivia and the region.
Impact
The grant allowed us to cover essential organizational costs, provide mentoring resources, host workshops, and ensure a high-quality experience for participants. Without this support, it would not have been possible to achieve the scale and impact of the event.
The funding empowered us to attract more builders and showcase Arbitrum as a powerful environment for innovation.
Highlights:
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10 years of Ethereum -
3 years of Ethereum Bolivia -
162 hackers, 347 general attendees, and 13 pre-events across the country with 800+ participants.
Arbitrum played a central role: supporting workshops, mentorship, and bounties, while becoming one of the most adopted technologies by hackathon teams.
The Buildathon was a three-day event in Santa Cruz, Bolivia 
(Aug 1–3, 2025) that combined hacking, conferences, and community networking.
Event Results
Deployment of Projects on Arbitrum
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Teams Using Arbitrum: 7 out of 36 final hackathon teams
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Smart Contracts Deployed: 7 contracts successfully deployed on Arbitrum network
On-Chain Verification:
Impact:
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Developers gained hands-on experience with Arbitrum
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Strengthened connections among devs, universities & startups
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Branding: Arbitrum featured on banners, kits, POAPs, certificates & recap videos
EDUCATIONAL MATERIAL:
Workshop 1: Guidelines to Arbitrum
Workshop 2: Onboarding
Onboarding Video: Hackers basic onboarding
Feedback from Hackers
Participants expressed strong motivation to continue developing on Arbitrum after the event.
GENERAL FEEDBACK POST BUILDATHON: PDF Document
Here’s the summary of the Buildathon 2025 General feedback:
What Participants Liked Most
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Community and Networking
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Meeting new people, collaborating, making friends, and connecting with blockchain enthusiasts.
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Great atmosphere with positive energy, enthusiasm, and passion.
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Mentors and Speakers
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High-level experts available day and night.
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Their guidance was crucial for project development and learning.
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Talks, Conferences, and Workshops
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Wide variety, from basic to advanced topics.
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Valuable information about Avalanche, Arbitrum, and web3 technologies.
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Organization and Overall Logistics
- Many highlighted smooth coordination, comfortable spaces, and high energy from the organizing team.
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Food, Drinks, and Merch
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Ample and varied meals.
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Coffee, energy drinks, pizza, snacks, and souvenirs were highly appreciated.
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Environment and Overall Experience
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Excellent venue (Univalle), spacious areas, fun activities, and motivating challenges.
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The challenge of working under time pressure in teams was seen as rewarding.
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Areas for Improvement
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Connectivity and Technology
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Internet issues.
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Technical problems during talks.
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Logistics and Spaces
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Lack of tables, chairs, power outlets, and rest areas.
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Long lines for food and merch.
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Better layout for hacking zones and auditoriums.
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Food and Drinks
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More coffee availability (ideally 24/7).
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Greater variety of energy drinks.
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Some suggestions for healthier food options.
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Schedule Organization
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Delays in talks and activities.
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Parallel sessions conflicted with hacking time.
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Limited time for project presentations and pitches.
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Evaluation and Judges
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Greater transparency in scoring.
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Clearer feedback from judges.
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Judges with stronger technical knowledge suggested.
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Participant Experience
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Improve team formation dynamics.
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More networking activities and games.
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Clearer rules regarding pre-made projects.
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Better rest areas, more beds and showers.
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Conclusion
Participants greatly valued the community, mentors, talks, and collaborative environment, as well as the food and merchandise, which enhanced the experience.
The main areas for improvement include logistics (spaces, rest areas, lines, equipment), schedule organization and project presentations, connectivity, and evaluation transparency.
I can also prepare a one-page executive version for organizers and sponsors in English if you want. Do you want me to do that?
Arbitrum Hackers winners:
Arbitrum’s Presence & Activities
Workshops During Buildathon
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Led by Sebastián Luján (Arbitrum Ambassador, Argentina).
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Full capacity with 45 participants.
Pre-Event Workshops
Mentorship
- Arbitrum reps provided 1:1 guidance to teams.
Bounties & Prizes
- Special Arbitrum Bounty Prize for deployed projects.
Buildathon Prize Pool
Prize Tracks Sponsored by Arbitrum (~$1,000 per track):
- DeFi Track
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Dynexa – $600 Meet the team -
Torito – $400 Meet the team -
AI Track
Pics ****
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Hire Tree – $600 Meet the team
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CERT – $400 Meet the team
Exclusive Arbitrum Bounty (~$350):
- Distributed equally among 7 teams deploying on Arbitrum.
Event Attendance
Video: Hackers arrival special moment
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Hackathon Participants: 162 hackers (verified via Unlock)
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General Attendance: 347 attendees in conferences & workshops
Captured Moments:
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August 1st Pics: Arrival Opening Ceremony
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August 2nd: Photos
Mentors & Speakers
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Sebastián Luján (Arbitrum Ambassador) — Workshop
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Gustavo González — L2 & rollups mentoring
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Stella Achenbach (Unlock)
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Arlette Salas (Hive, Venezuela) — Profile
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David Zapata
(…and more full list of 14 mentors and judges)
Agenda & Key Activities
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Conferences & Panels: Topics from DeFi, DAOs, regulation, rollups, startups, women in blockchain.
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Workshops: Arbitrum tools, Avalanche dev, DAO ops.
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Networking: Pizza party, sponsor showcases.
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Hackathon: 36-hour hack + mentorship + final presentations.
Photos & Media
Additional Metrics: KPIs – Projected vs. Actual
| Milestone | Budget (USD) | KPI (Projected) | KPI (Actual) | Status |
|---|---|---|---|---|
| 01 – Pre-Event Workshops | 900 | 250 attendees / 3 partnerships | 347 attendees main event & 800+ pre-events / 4+ partnerships | Exceeded |
| 02 – Speaker Confirmation | 500 | 200 social impressions / 1 intl. speaker | 200+ impressions / 1 intl. Arbitrum guest confirmed | Reached |
| 03 – Buildathon Execution | 2400 | 350 attendees / 2 materials / 1 partnership | 509 attendees / 2 materials / multiple Arbitrum partnerships | Achieved |
| 04 – Post-Event Report | 950 | 25 projects / 800 attendees / 250 newcomers | 36 projects / 1300+ attendees (Buildathon + pre-events) / 250+ newcomers | Exceeded |
Pre-Event Sessions – Destino ETH Bolivia 2025
Multiple sessions across Santa Cruz, La Paz, Cochabamba — all with links, PDFs, POAPs, and on-chain verifications (full list iincluded in the next link: Full data Pre Event Sessions)
SANTA CRUZ:
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Destino Buildathon 2025 Abril
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Destino Buildathon 2025 Mayo
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Pizza Party Santa Cruz
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Destino Buildathon 2025 Junio
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Workshop Web3 & dApps — Arbitrum Tools
Santa Cruz (July 11)
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Ethereum 10Y & ETH Bolivia 3Y Celebration — Santa Cruz (July 30).
LA PAZ:
- Cripto Velada April
- Cripto Velada May
- Introducción a Web 3
COCHABAMBA:
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Workshop Web3 & dApps — Arbitrum Tools
Cochabamba (July 17).
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Destino July 4th
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Destino July 8th:
National
- Online Workshops & Twitter Space with Devconnect — July 24
https://x.com/ethereumbo/status/1947277519574434140?s=46&t=kplYCsWM7dkcYYfdH3lkYw
Financial Summary
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Workshops & Pre-Event Logistics – 20%
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Speaker & International Guest – 11%
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Prizes & Buildathon Execution – 53%
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Post-Event Media & Recap – 16%
100% of grant funds were directed towards hackathon execution, education, and Arbitrum adoption.
Future Plans & Ecosystem Alignment
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Expand Arbitrum workshops to more universities in Bolivia & LATAM.
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Create a permanent Arbitrum track in future Buildathons.
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Onboard hackathon teams into Arbitrum repos & grant pathways.
Conclusion
The ETH Bolivia Buildathon 2025 met and exceeded the objectives outlined in our initial proposal to Arbitrum.
Beyond introducing the technology, the event created a pipeline of projects and developers ready to continue building on Arbitrum.
This marks the beginning of a long-term relationship between Arbitrum and the Bolivian blockchain community. Continued support will help establish Arbitrum as the primary Layer 2 in Bolivia and LATAM.
We propose a follow-up call to explore future collaborations.
Contact
Project Manager: Alison Berbetty
Email: ethbolivia@gmail.com
Website: Ethereum Bolivia