I passed through Adolfo Suárez Madrid–Barajas Airport in Madrid, Spain and I got to mint this pretty POAP! MAD Terminal 4 (T4), opened in 2006, is one of the largest airport terminals in the world (about 760,000 m² including its satellite), and features a driverless automated people mover to connect with the satellite building. This POAP was minted in Q4, 2025 as part of a campaign to offer precious collectibles to travellers at 18 airports around the world.

This POAP confirms that you were a Hacker at ETHGlobal Buenos Aires 2025 which took place as part of Devconnect ARG and marked ETHGlobal’s long awaited return to Argentina! 🇦🇷 This event saw a remarkably experienced set of 1,195 hackers and 1,766 overall attendees build 475 projects in just one short weekend. Thank you so much for joining and being a part of what makes each event so special.

Minting this POAP is proof of your attendance at the trustless:// conference during Devconnect, ARG. trustless:// is where we gathered to affirm that Ethereum’s future is open, censorship-resistant, and above all - trustless. We explored how the Ethereum Interop Layer (EIL), OIF, ERC-4337, and other interop protocols extend these guarantees and more: open mempools, multiple routes to inclusion, and wallets that can evolve permissionlessly.

This POAP was given to visitors of the GainForest.Earth booth at the Ethereum World’s Fair, Devconnect Argentina 2025. GainForest decentralizes nature finance and research. Together with Indigenous and local communities, we co-create open infrastructure to protect forests, climate, and biodiversity. By collecting this POAP, you become part of our mission to build transparent and regenerative systems for nature.

This POAP was given to attendees who made a Mercado Pago transaction using Peanut during the Devconnect ARG event.

Connect with other builders, talk to teams looking for talent, meet your users, or showcase your app at the Ethereum World’s Fair. Explore what Ethereum is for and what it enables, test applications, and win in some fun challenges.

You got this digital collectible because you have met Patricio Worthalter in real life during November of 2025. https://twitter.com/worthalter https://t.me/patricioworthalter

This POAP means that you successfully minted a POAP during Devconnect season in Buenos Aires. Thanks for being part of something innovative!

Aleph Hackathon aims to unite builders across Latin America to tackle real-world challenges. It’s designed to be more than a hackathon — it’s a space to learn, build, and grow with mentorship and community support before, during, and after the event.

​We open the doors to Aleph Festival, a single point of convergence for the entire builder universe. Over three months, it will host Latam’s biggest Hackathon, a 6-week Buildathon Season, and the Startup World Cup competition, alongside Regulation Day and technical summits on AI, DeFi, and more. ​Argentina has been building with crypto for decades, becoming a global reference for resilience, creativity, and real-world adoption. As the world turns its eyes to Buenos Aires for Devconnect, Aleph Festival is the step that prepares us to truly Bring Argentina Onchain.