Robinhood Chain Testnet Gains Developer Momentum with $1M Support
Robinhood Chain Testnet Gains Developer Momentum with $1M Support
🏗️ Robinhood testnet heats up
Developers are actively building on the Robinhood Chain Testnet, which focuses on infrastructure testing and onboarding. Robinhood is backing serious teams through a $1M sponsorship of Arbitrum's Open House program.
Key developments:
- Testnet enables contract deployment, bridging, and tokenized asset flow testing
- Builders can access workshops, mentorship, and technical guidance
- The chain runs on Arbitrum's platform, offering custom gas tokens and fee control
- Follows Robinhood's 2,000+ Stock Tokens launch on Arbitrum One for EU users
The testnet represents Phase 1 of Robinhood's roadmap to migrate from shared rails to dedicated Layer 2 infrastructure. Phase 2 will bring mainnet launch with production-ready tokenized stocks, 24/7 trading, and self-custody features.
Start building: robinhood.com/chain
The Robinhood Chain roadmap follows a phased approach: Phase 1 (Testnet) → Developer onboarding → Infrastructure and UX testing → Simulated asset flows Phase 2 (Mainnet) → Production network with broader access → Migration of services and supported assets This structure
When you’re bringing real financial products onchain, three things matter: • Control over your chain configuration • Start with shared liquidity, then migrate to custom dedicated rails • Ethereum-grade security That’s why Robinhood Chain is launching on the Arbitrum Platform
Here’s what bringing real financial products onchain looks like with Robinhood: 1️⃣ Start on Arbitrum One → Tap into deep shared liquidity → Tokenize 2K assets for EU users → Find early PMF 2️⃣ Activate Robinhood Chain Testnet → Onboard builders → Test infrastructure →
This is a broader shift, from legacy brokerage rails to programmable infrastructure. Robinhood Chain explores how issuance, execution, and settlement can run onchain continuously, securely, and with fewer intermediaries. Arbitrum provides the institutional-grade foundation that
Top teams can earn $60K in prizes and grants + Buildathon winners get an opportunity to join us at the NYC Founder House in March. Apply here: arbitrum-nyc.hackquest.io/?utm_source=we…
Starting Feb 5, the online Buildathon gives early teams 3 weeks of workshops, GTM sessions, mentorship and ecosystem support to turn ideas into MVPs. Top teams earn $30K in prizes, qualify for $30K in grants, and the top 3 join the NYC Founder House. Apply today.
We also invite founders to apply to our IRL Arbitrum Open House in NYC on March 6. Unlike the online Buildathon, Open House is a 3-day, in-person, selective founder program for teams ready to ship onchain. Founders will work closely with leading ecosystem builders and Arbitrum
Great to see builders active on the @RobinhoodApp Chain Testnet! This testnet phase is focused on developer onboarding and infrastructure testing and Robinhood is helping serious teams get started by sponsoring Arbitrum’s Open House with $1M in support. Builders now have
Robinhood Chain testnet just crossed 10M transactions. Developers can connect today, access the documentation, and start building. We’re also supporting the @arbitrum Open House hackathon series with $1M in prizes to support teams building on Robinhood Chain testnet.
To help builders get started, Robinhood is sponsoring Arbitrum’s Open House program. Designed to help steward meaningful and promising projects onto the blockchain, Robinhood will guide and mentor new Robinhood Chain developers from start to finish. Learn more about Open House
ICYMI: the Robinhood Chain testnet is now live for developers and users. This launch follows @RobinhoodApp’s Stock Tokens debut on Arbitrum One and kicks off a phased roadmap towards their migration to their own Arbitrum stack chain. Start building now: robinhood.com/chain
The Robinhood Chain public testnet is live 🛠️ Developers can now build on a financial-grade Ethereum Layer 2 built on @arbitrum— designed to support tokenized real-world and digital assets. Start building with the core foundation of Robinhood Chain: docs.robinhood.com/chain
Hands-on guidance for businesses building on the Robinhood Chain from day one. Why this matters: New teams don’t just need tooling They need distribution, capital access, and a reliable platform to help them bring independent, open internet economies to market
ICYMI: In order to help serious businesses get started on the freshly live testnet ... Robinhood is sponsoring Arbitrum’s Open House with $1M.
If you’re a developer or user jumping into the Robinhood Chain Testnet, @BFreshHB put together a great walkthrough to get you started. Check it out below. 👇 youtu.be/-Hd5mkdG1L8
When you're building for an entire country, it has to be secure, customizable, and built to scale The Arbitrum Platform delivers that Thrilled to welcome @MandalaChain who are launching their own dedicated rails to power digital identity & AI infrastructure in Indonesia
Mandala Chain is launching next week as an Ethereum Layer 2 using the @Arbitrum Stack. Arbitrum’s rollup architecture, reliable execution, and Ethereum-native tooling make it an ideal foundation for Mandala’s next phase. Proud to be building on @Ethereum with Arbitrum and
Small schedule update: Open House NYC’s online Buildathon will now run from Feb 5 to Feb 26, 2026 🗓️ 3 weeks of technical workshops, founder GTM, and mentorships - with $60k in prizes and grants.
Now is the time for you to go from idea → product. Open House 2026 will give you the opportunity to work with mentors, develop your own team, and win prizes of up to $800,000. Learn more about how you can participate in the upcoming NYC Open House buildathon and founder house
Founders & builders - ready to ship onchain? Sign up to our 3-week Open House NYC Online Buildathon starting Jan 29th Get hands-on technical workshops, Founder GTM sessions, mentorship from the Arbitrum Foundation, @Offchain + $60k in prizes and grants openhouse.arbitrum.io/?utm_source=tw…
What Robinhood Chain gains with a dedicated chain on the Arbitrum platform: • Custom gas token support • Control over fees, throughput, and permissions • Seamless UX tuned for low cost + fast confirmations All while keeping crypto infrastructure behind the scenes.
New capital markets thrive when institutions have independence and access to shared liquidity. The Arbitrum Platform lets them build what they want, how they want, without losing the advantages of being part of a major liquidity hub. Your rails, your rules.
Robinhood Chain’s endgame is modernizing global financial markets by making them open and programmable - Self-custodial stocks & ETFs - 24/7 trading by default - New DeFi and RWA primitives By building on the Arbitrum Platform, @RobinhoodApp gets the freedom and independence to
Flexible rails power long term growth for enterprises On Day 1 with Arbitrum, they can: - Build directly on shared liquidity - Plug in and source liquidity - Start on shared liquidity, then migrate to dedicated rails One platform. Multiple paths to get PMF
Robinhood Chain testnet is now live on the Arbitrum platform. Phase 1 focuses on developer onboarding and infrastructure testing: Testnet gas + Stock Tokens Contract deployment Bridging + explorer visibility This allows tokenized asset flows to be tested without production
Robinhood Chain is entering the next phase of its onchain infrastructure roadmap. EU users can already explore 2,000+ Stock Tokens linked to U.S. stocks & ETPs on Arbitrum One. Now, with testnet live, Robinhood Chain is moving from shared rails to a dedicated Layer 2 built on
Arbitrum Everywhere Episode 4: Ethereum Scaling Roadmap Discussion
The fourth episode of Arbitrum's *Arbitrum Everywhere* series features Anthony Sassano, founder of The Daily Gwei. **Key Discussion Points:** - How Arbitrum integrates into Ethereum's long-term scaling strategy - The impact of upcoming Ethereum upgrades on the broader ecosystem - Arbitrum's role in strengthening Ethereum's infrastructure This follows the previous episode with Offchain's CEO, which explored institutional adoption through platforms like Robinhood. [Watch the full episode](link in original post)
Arbitrum Announces Multidimensional Gas to Boost Network Capacity
Arbitrum is preparing to launch **multidimensional gas**, a technical upgrade designed to increase network capacity and scalability. The Layer 2 solution emphasizes that strong execution infrastructure is driving enterprise adoption. The upcoming gas mechanism aims to provide more flexibility for onchain operations. **Key points:** - Multidimensional gas coming soon to Arbitrum - Focus on enabling programmable economies to scale - Businesses selecting Arbitrum for reliable execution - Upgrade will unlock additional network capacity
Arbitrum Launches 8-Week Mentorship Program for Early-Stage Teams
Arbitrum Foundation has opened applications for its **Mentorship Program**, an 8-week initiative starting April 13th designed to help early-stage teams launch on the Arbitrum platform. **Program highlights:** - 15 selected teams receive dedicated mentorship from ecosystem leaders including Robinhood Chain, Pendle, GMX, and Fhenix - Structured support covering product strategy, go-to-market design, network architecture, and fundraising preparation - Concludes with Demo Day featuring investor presentations - Top 3 teams share **$100K in non-dilutive awards** The program targets teams at MVP, pre-seed, or seed stage across AI, DeFi, and other onchain verticals. Applications close April 7th. This follows the recent Open House NYC Buildathon, which awarded $60K in prizes to winners including Tilt Protocol, Fangorn Network, and EqualFi. [Apply here](https://tally.so/r/aQdj2W) | [Program details](https://blog.arbitrum.foundation/introducing-the-arbitrum-mentorship-program-access-capital-and-strategic-support/)
Arbitrum Dynamic Pricing Cuts Fee Spikes by 98% During Peak Demand
Arbitrum's new dynamic pricing system has delivered significant results during recent network stress tests. **Key Performance Metrics:** - Fee spikes reduced by up to 98% during peak demand - Handled 2.4x more demand with 15% lower fees - Fee volatility decreased by approximately 17x compared to other networks **How It Works:** The system moves beyond single gas pricing to track real network bottlenecks across compute, storage, and history growth. This approach enables more predictable costs during high-traffic periods. **Business Impact:** Predictable fees allow businesses to forecast costs accurately, manage risk effectively, and scale operations with confidence. The upgrade supports reliable system design for applications operating onchain. Full technical details and data: [blog.arbitrum.io/predictability-at-peak-demand](https://blog.arbitrum.io/predictability-at-peak-demand/)