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The Ethereum Foundation's week-long "World's Fair" in Argentina.
Devconnect 2025 was a week of Ethereum events held at La Rural in Buenos Aires. The Ethereum Foundation reported more than 14,000 attendees from over 130 countries.
Devconnect is the Ethereum Foundation's gathering of independent, topic-specific events for people who build on Ethereum. The 2025 edition ran from 17 to 22 November and, for the first time, was held as a single "Ethereum World's Fair" inside La Rural, a large exhibition ground in Buenos Aires.
The Foundation called it its largest event so far, with 14,000+ attendees, 45% of them from Argentina and 53% attending one of its events for the first time. The fair had themed districts, more than 80 teams showing working applications, 15 community hubs and over 40 deep-dive events, with 500+ community side events elsewhere in the city.
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The Ethereum Foundation reported 14,000+ attendees from more than 130 countries.
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More than 80 teams showed working Ethereum applications in themed districts inside La Rural.
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According to the Foundation, 45% of attendees came from Argentina.
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Ethereum Foundation teams introduced the Ethereum Interop Layer and the Kohaku wallet stack.
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