In-person hackathon
Ethereum Builders TourCali, Colombia
Two days building applications with artificial intelligence, cryptography and robotics. Plus a shot at joining an advanced innovation mission across Shenzhen, Hong Kong and Mumbai from 15 October.
- When
- 19 – 20 September 2026
Ethereum Builders Tour: Cali, Colombia
EAG Global Buildathon
Watch it back
Both days went out live on YouTube and on X. The recordings are here.
The tour
Where it has been
The Ethereum Builders Tour travels the world activating builders. Tap a point to open a stop. The amber points are the destination: the innovation mission.
Who makes it possible
Title sponsorHashKey Chain1,000 USDT in prizes and a track of its own: 500, 300 and 200 USDT
OrganiserThe tour itself, the six tracks and 5 × 200 USDT in prizessee it →@EthAppsGuild
Devcon ticketsDevcon VIII tickets for the winners, 499 USD eachsee it →@ethereumfndn
Local hostThe organising on the ground, and the community that fills the room@ethcali_org
Workshops and mentoringThe technical workshops across both days, and mentoring through the hackathonsee it →@ekinoxis_xyz
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
- 09:00–10:00Opening
Opening and welcome — registration and swag claim
- 10:00–10:10Talk
Opening speech
Audrey Tang · Executive Director, EAG
- 10:10–10:30Talk
EAG 2026 Global Application & Builder Initiatives
Jiang · Technical Lead, EAG
- 10:30–11:00Workshop
EAG tracks
- 11:00–12:00Workshop
HashKey Chain tracks
- 12:00–12:15Talk
What is ETH Cali?
María del Mar · Core member, ETH Cali
- 12:15–13:00Workshop
What is Ethereum?
- 13:00–14:00Break
Lunch
- 14:00–16:00Workshop
Scaffold apps in Ethereum with AI
William Martínez · Founder, Ekinoxis Labs
- 16:00–19:00Hackathon
Brainstorming and team setup
- 19:00–20:00Break
Dinner
- 20:00–00:00Hackathon
Build, build, build
Day 2 · Sunday 20 September
- 00:00–10:00Hackathon
Mentorships and feedback from mentors
- 10:00–10:30Break
Breakfast
- 10:30–13:30Hackathon
Build, build, build
- 13:30Hackathon
Hackathon submission ends
- 13:30–14:00Break
Lunch
- 14:00–17:30Demos
Demo showcase — 5 min per project (3 min demo + 2 min Q&A)
- 17:00–17:30Judging
Judging
- 17:30Winners
Winner announcement
Prizes
Prizes
Three prize sources, judged separately. One project can take more than one.
EAG
A month building with the global Ethereum community, across three cities.
- 5 × 200USDT — five winning projects, 200 USDT each
Ethereum Foundation
Devcon tickets for winners, through the Road to Devcon programme.
- 499USD the value of each Devcon ticket, contributed by the Ethereum Foundation
HashKey Chain
A USDT prize for the strongest projects on the HashKey Chain track.
- 1º500 USDT
- 2º300 USDT
- 3º200 USDT
Prizes stack. Each is judged separately, so a single project can take a place on the EAG prize, a Devcon ticket and the HashKey Chain prize. You do not have to choose.
Getting paid
Every cash prize is paid in USDT on Ethereum mainnet.
USDT
Ethereum mainnet
No wallet?
Use ours. It is created from your email, there is no seed phrase to write down, and the keys are yours. Open it before the event and you arrive ready to be paid.
Open a wallet →Frontier Cities
For businesses: delegate a mission in Asia
Your company needs something done in Shenzhen, Hong Kong or Mumbai. Instead of buying a plane ticket, you hand it to builders who will already be there for a month.
Shenzhen
15–31 October
The global centre of electronics manufacturing. Sketch to prototype in your hand, in days.
Mumbai
1–6 November
During Devcon: the week half the Ethereum ecosystem is in the city.
Hong Kong
6–10 November
Capital, international markets, and the way into Asia for a Latin American company.
1,000 USD
the reference value per mission, agreed before anything is run
Propose your mission →15 October – 10 November 2026Road to Devcon
The road ends at Devcon
The Ethereum Foundation is contributing Devcon tickets for winners, through the Road to Devcon programme. Each ticket is valued at 499 USD.
1–6 November 2026 · Mumbai, India
devcon.org →What it is
The Ethereum Foundation's own conference. A week with the teams building the protocol.
Where
Mumbai, India — the final Ethereum Builders Tour stop lands that same week.
How you get one
By winning in Cali. Tickets come from the Ethereum Foundation through Road to Devcon.
ShanHaiWoo 山海坞 · three cities, one journey
15 Oct – 10 Nov 2026 · Shenzhen · Mumbai · Hong Kong
shanhaiwoo.com →Shenzhen
15–31 octAI, hardware, supply chains and manufacturing: prototype to production.
Mumbai
1–6 novDevconConnecting with the global Ethereum and open-source communities during Devcon.
Hong Kong
6–10 novCapital, international markets and the wider world.
Where
The venue
SIDOC Auditorium — Universidad Icesi
Cl. 18 #122-135, Barrio Pance
Cali, Colombia
Where
Cali, Colombia
Cali is Colombia's third city and the capital of Valle del Cauca, in the south-west of the country. It sits a thousand metres up between the Western Andes and the Cauca valley, at around 30 °C almost every day of the year.
The city and the valley, seen from the western hills
Cristo Rey, above Cerro de los Cristales
Hernando Tejada's Gato del Río, on the bank of the Cali river
Ready?
Limited places. In-person registration closes when the room is full.