Open House is an all new builder experience hosted by the Arbitrum Foundation, where we aim to attract a new wave of talent by providing interactive, localized, hands-on support to builders from all around the world.The Arbitrum team is taking a unique approach with Open House, putting forward a hybrid combination between online and in-person experiences. Whilst online events are effective for reaching as many people as possible, we believe that bringing experts from the Arbitrum team to your city will allow us to educate, support, and innovate alongside our community at the highest level.Thank you to our sponsors from Appwrite, EF Founder Success, Couchbase, and OpenZepplin for supporting ecosystem builders through Open House.

Covering All Bases: Learn, Build and Hack

Open House events have been split into three distinct categories: Learn, Build, and Hack. Each of these categories have been designed to cater to a specific target audience, allowing the Arbitrum team to streamline experiences to fit the needs of every builder wherever they are on their developer journey.

Learn: Features a “no fluff” subset of workshops and online courses that are tailored specifically to builders who want to gain a deep understanding of product, protocol, and growth related topics.

Build: Buildathons are all about shipping your ideas to market. Bring your own team, or form a new one by connecting with like-minded builders. You can even bring your existing codebase over to the Arbitrum stack, eliminating the need to start building entirely from scratch. The Arbitrum team will be here to support you at every step of the way, with professional hands-on support, as well as prizes for the most promising teams.

Hack: Our IRL Hacker House is the final phase of each Open House event, where developers will have the opportunity to work side by side with professionals from the Arbitrum team and the surrounding ecosystem.

Join us for Demo Day

In addition to the Arbitrum Hacker House, our team will host an online Demo Day, giving our ecosystem builders a platform to showcase their projects to the world. To further support our builders, we are looking to help accelerate the most promising teams through multiple avenues such as mentorship, funding opportunities, and potential pathways to growing and scaling their projects within the Arbitrum ecosystem. The official date for Demo Day will be shared soon via the Arbitrum X account.

Open House India

We are well underway in India, having already undergone the first portion of our campaign. From August 5th to August 15th, we hosted Open House Learn, which featured a packed schedule filled with presentations covering topics such as the Arbitrum tech stack, Solidity guides, an introduction to Stylus, and interactive segments such as live Q&A with the Arbitrum team, along with many more presentations (recordings available). The full agenda from our Open House Learn event can be found here.

Open House Build is a 3-week online buildathon that is currently ongoing, and will continue to run up until September 10th. This segment of Open House brings builders together to collaborate on ideas, compete for prizes, and most importantly, unlock a new level of creativity. It isn’t too late to join in on the action, so be sure to register as soon as possible.

Following Open House Build, developers will gather in Bangalore to connect, collaborate, and build together at our in-person Hacker House. Applications are now open, and must be submitted by August 27th.

As a builder, here’s what you can expect to experience at Arbitrum’s Bangalore Hacker House:

• Hands-on workshops delivered by Arbitrum’s technical team, and talented ecosystem partners.
• Tons of feedback on what you are building during AMA and friendly pitch sessions 
• Meet and collaborate with builders who share similar interests to you, allowing you to level up your networking game, and unlock a world of new opportunities.
• Prizes will be awarded to the most promising teams, including best project ($15,000), second place ($5,000), and third place ($2,500). We will also be distributing some more prizes to honorable mentions.
• Build in comfort, surrounded by fresh air and natural surroundings.
• Take part in a variety of wellness activities that have been crafted to help you continue performing at your best.

Expanding Beyond India

Following the conclusion of Open House India, it will be time to set your sights on our next localized campaign. To round out 2025, we will be bringing Open House to North America. Dates will be announced via Arbitrum’s official social media channels.

Stay in the know, and sign up for the Arbitrum Builder’s Block Newsletter to be the first to hear about our upcoming announcements.