Arbitrum Open House Buildathon Launches with Support from Robinhood, Alchemy, and GMX
Arbitrum Open House Buildathon Launches with Support from Robinhood, Alchemy, and GMX
🚀 Buildathon starts tomorrow

The Arbitrum Foundation's Open House London Buildathon begins tomorrow, offering a 3-week online program for early-stage teams building onchain products.
Program Support:
- Technical guidance from Robinhood, Alchemy, GMX, OpenZeppelin, and Offchain
- Product development workshops
- Infrastructure readiness training
- Access to industry leaders in the Arbitrum ecosystem
Prizes & Opportunities:
- $115K in prizes
- Top teams advance to an in-person Founder House accelerator in London
- Focus areas include payments, DeFi, RWAs, privacy, AI agents, and consumer applications
The program is open to teams worldwide looking to launch products on the Arbitrum Platform. Registration remains open at openhouse.arbitrum.io.
Our 3-week Open House online Buildathon program kicks off tomorrow. Early-stage teams bringing new business products onchain will get support from @RobinhoodApp, @Alchemy, @GMX_IO, @OpenZeppelin, @Offchain and the Arbitrum Foundation. Register today. 👇 openhouse.arbitrum.io/?utm_source=tw…
Open House London kicks off with a remote 3-week Buildathon program on May 25th with $115K in prizes. If you're a serious early-stage team looking to bring an idea into the programmable economy on the Arbitrum Platform, register to Buildathon today. openhouse.arbitrum.io/?utm_source=tw…
We’re thrilled to announce @RobinhoodApp as a sponsor of Open House London. They’re supporting Open House across 4 regions with $1M in funding and hands-on guidance for businesses shaping the programmable economy on the Robinhood Chain.
The next generation of onchain businesses starts here. Open House London is kicking off with Buildathon on May 25th - a 3-week, online global program helping early-stage teams turn ideas into onchain products on Arbitrum. If you're an early-stage team looking to bring your
Learn how we’re backing early-stage teams shaping the programmable economy through Open House London. Open House London starts May 25th with a 3-week online Buildathon designed to help founders turn ideas into onchain products with hands-on support. Apply today. 👇
Open House London is a global builder program + startup accelerator for founders, designed to help launch new businesses into the programmable economy on the Arbitrum Platform. In this video, @blockbyvlog covers: - 3-week Online Buildathon & IRL Founder House - Full prize
All early-stage teams from anywhere in the world can apply. During the 3-week remote Buildathon, teams will get support across key areas to help turn ideas into real onchain products: 1. Technical readiness: Hands-on workshops focused on building effectively on the Arbitrum
The programmable economy needs new businesses. Open House London is helping bootstrap them with a $415K prize pool (our largest yet). Starting May 25th, early-stage teams join a 3-week online Buildathon to: - Bring ideas from concept to mainnet - Receive technical guidance via
Open House London begins May 25th with a 3-week remote Buildathon designed to help early-stage teams turn ideas into products on the Arbitrum Platform. Build from anywhere, collaborate online and get access to mentorship, workshops and connect with industry leaders in the
Open House London remote 3-week Buildathon program kicks off May 25th with $115K in prizes. If you're an early-stage team looking to bring new product ideas into the programmable economy on the Arbitrum Platform, here’s why you should register. 👇🧵 openhouse.arbitrum.io/?utm_source=tw…
Let’s welcome @OpenZeppelin as a sponsor of Open House London. OpenZeppelin supports teams with secure blockchain infra and tooling, including Arbitrum Stylus. We’re looking forward to seeing early-stage teams at Buildathon build Rust-based products on the Arbitrum Platform.
All ideas are welcome. We're especially excited about early-stage teams building in areas around: - Payments: stablecoin rails and settlement infrastructure - DeFi: trading, liquidity, and financial infrastructure - RWAs: tokenized assets and capital markets - Privacy: identity
Open House’s 3-week online Buildathon starts in 2 days. Early-stage teams building the next-gen of onchain products will get: - Product guidance - Technical/infra readiness - Access to connect with industry leaders - $115K in prizes + invitation to IRL Founder House in London
Buildathon concludes with a competition featuring $115K in prizes. Top teams will go to our IRL Founder House in London. Founder House is an accelerator designed to help founders refine products, prepare for launch on the Arbitrum Platform, access GTM mentorship and get
Learn more about how we're bringing new businesses into the programmable economy with Open House London: blog.arbitrum.foundation/open-house-lon…
Interested in bringing your product into the programmable economy? The Arbitrum Foundation is kicking off Open House London with Buildathon - an online global program helping early-stage teams turn ideas into onchain products on the Arbitrum Platform. Apply today:
Introducing @Alchemy as a sponsor of Open House London. They provide enterprise infra and tooling to support today’s most widely used onchain products. Together with Alchemy, Open House is helping businesses shape the broader programmable economy on the Arbitrum Platform.
Arbitrum's Programmable Economy Expands: Real Estate Tokenization, Privacy Features, and $3B GPU Financing Demand

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Loaf Markets Launches Platform to Tokenize $4 Trillion Real Estate Market
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Banxaofficial Enables USDC Purchases Across 180+ Countries with Multiple Payment Methods

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Robinhood Chain Reaches $2M Revenue Milestone, Returns Fees to Arbitrum

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