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.

The standard for secure onchain applications at any scale. Build, secure, and operate across 30+ chains with OpenZeppelin Contracts and open source tools. Lock down your code with our gold-standard smart contract and blockchain infrastructure audits.

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

Because the best ideas are born between smoke and friends. This POAP marks the barbecue where Settle brought crypto sovereignty to the grill.

This POAP proves you have attended ETHDenver 2025. ETHDenver is a Community-Owned Innovation Festival. With community members on six continents, ETHDenver has proven itself one of the most important events on the annual calendar. ETHDenver Is The World’s Largest & Longest Running Ethereum #BUIDLathon Event.

You got this digital collectible because you have met Patricio Worthalter in real life during February of 2025. https://twitter.com/worthalter https://t.me/patricioworthalter See my collection: https://collections.poap.xyz/youve-met-patricio/1

This POAP proves that you visited our booth during Devcon Bangkok '24 https://www.openzeppelin.com/

You got this digital collectible because you have met Patricio Worthalter in real life during November of 2024. See the moments for hints. https://twitter.com/worthalter https://t.me/patricioworthalter See my collection: https://collections.poap.xyz/youve-met-patricio/1

Este POAP prueba que estuviste en el Asado de Mariano Conti en Agosto de 2024. Comimos chori, matambrito, vacío y las mejores mollejas del mundo. Por la tarde disfrutamos de unos buenos mates con chocotorta. Gracias Mariano por este estupendo día ♥️