ETHCalies

In-person hackathon

Ethereum Builders TourCali, Colombia

Two days building the next wave of Ethereum applications, in Cali.

When
19 – 20 September 2026
Register for the Cali event →In person at Zonamerica. Limited places.Submit your project on Devfolio →The EAG Global Buildathon. This is where your project is submitted and judged.

Ethereum Builders Tour: Cali, Colombia

Ethereum's infrastructure has matured. The next wave of innovation is emerging at the application layer — and it will come from the regions building right now. Together with ETH Cali and sponsored by HashKey Chain, the Ethereum Applications Guild brings two days of technical workshops, talks, collaborative hacking sessions and networking to Cali, for developers, founders, researchers and students.

Prizes

Prizes

Two tracks, judged separately. The same project can compete in both.

EAG

  • 1ºShanHaiWoo Scholarship — a place at the popup city in China

HashKey Chain

  • 1º500 USDT
  • 2º300 USDT
  • 3º200 USDT

Tracks

Tracks

Pick one. Names are kept as EAG and HashKey Chain publish them.

EAG · 6 tracks

AI x Ethereum & Agent Economy

AI agents, agent wallets, agent payments, agent-to-agent coordination and Ethereum-native AI applications.

Local AI, Private AI & User-Owned Data

Privacy-first AI applications, user-owned datasets, private credentials and selective disclosure.

Smart Devices, Open Hardware & Privacy Hardware

Open hardware, device identity, crypto-integrated devices, secure hardware and Ethereum in real-world environments.

Application Middleware & Open-Source Tooling

SDKs, wallet tooling, account abstraction, developer APIs, privacy SDKs, monitoring tools and reusable infrastructure.

AI-Native Creator Economy & Digital Rights

Content provenance, attribution, programmable licensing, creator payments, digital rights and ownership in the age of AI.

Real-World Ethereum Applications

Stablecoin payments, community coordination, education tools, public goods funding, reputation systems, local commerce and applications for emerging regions.

HashKey Chain · 7 tracks

  • AI Agents
  • AI × Web3
  • DeFi
  • Stablecoins
  • Payments
  • RWA
  • Blockchain Infrastructure

Schedule

Schedule

Two full days. Saturday you learn and start; Sunday you build, submit and win.

Day 1 · Saturday 19 September

  1. 09:00–10:00Opening

    Opening and welcome — registration and swag claim

  2. 10:00–10:10Talk

    Opening speech

    Audrey Tang · Executive Director, EAG

  3. 10:10–10:30Talk

    EAG 2026 Global Application & Builder Initiatives

    Jiang · Technical Lead, EAG

  4. 10:30–11:00Workshop

    EAG tracks

  5. 11:00–12:00Workshop

    HashKey Chain tracks

  6. 12:00–12:15Talk

    What is ETH Cali?

    María del Mar · Core member, ETH Cali

  7. 12:15–13:00Workshop

    What is Ethereum?

  8. 13:00–14:00Break

    Lunch

  9. 14:00–16:00Workshop

    Scaffold apps in Ethereum with AI

    William Martínez · Founder, Ekinoxis Labs

  10. 16:00–19:00Hackathon

    Brainstorming and team setup

  11. 19:00–20:00Break

    Dinner

  12. 20:00–00:00Hackathon

    Build, build, build

Day 2 · Sunday 20 September

  1. 00:00–10:00Hackathon

    Mentorships and feedback from mentors

  2. 10:00–10:30Break

    Breakfast

  3. 10:30–13:30Hackathon

    Build, build, build

  4. 13:30Hackathon

    Hackathon submission ends

  5. 13:30–14:00Break

    Lunch

  6. 14:00–17:30Demos

    Demo showcase — 5 min per project (3 min demo + 2 min Q&A)

  7. 17:00–17:30Judging

    Judging

  8. 17:30Winners

    Winner announcement

Prize

ShanHaiWoo 山海坞 · 4ª edición

First prize on the EAG track is a scholarship to ShanHaiWoo: a month-long popup city across three cities. Not a sightseeing trip — a month building alongside the global Ethereum community.

15 Oct – 10 Nov 2026 · Shenzhen · Mumbai · Hong Kong

  1. Shenzhen

    15–31 oct

    AI, hardware, supply chains and manufacturing: prototype to production.

  2. Mumbai

    1–6 nov

    Connecting with the global Ethereum and open-source communities during Devcon.

  3. Hong Kong

    6–10 nov

    Capital, international markets and the wider world.

See the announcement →
ShanHaiWoo 山海坞 2026

Where

The venue

Zonamerica — NIDO: Distrito de Innovación

Cali, Colombia

Open in Google Maps →zonamerica.com →

Who makes it possible

Ready?

Limited places. In-person registration closes when the room is full.

Register for the Cali event →In person at Zonamerica. Limited places.Submit your project on Devfolio →The EAG Global Buildathon. This is where your project is submitted and judged.
Telegram group →