> ## Content Index > Fetch the complete content index at: https://blog.arbitrum.foundation/llms.txt > Use this file to discover other available public pages before exploring further. # Builder's Block #011: Robinhood Chain Launches Testnet & Commits $1M to Builders - URL: https://blog.arbitrum.foundation/builders-block-011-robinhood-chain-launches-testnet-commits-1m-to-builders/ - Published: 2026-02-17T12:04:32.000Z - Updated: 2026-02-17T12:04:32.000Z - Author: Arbitrum Foundation - Tags: Builder Newsletter 💡 ****What's Important This Week** 🍀 ****Robinhood Testne**t is here & ****1M** in prizes at ****Open House** 📈 How ****Dynamic Pricing** managed ****Peak** TPS ⚙️ ****Move** and ****Foundry** came to ****Stylus** ## 📣 Announcements *Key updates from the Arbitrum ecosystem and Foundation.* ### Robinhood Chain Testnet now live ![Y88QDZYr.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/Y88QDZYr.png) 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 now](https://docs.robinhood.com/chain/?ref=blog.arbitrum.foundation) ### Robinhood Chain to support Open House 2026 with up to $1M in prizes Robinhood Chain is supporting the Arbitrum Open House 2026 with $1 million in prizes for builders, backing teams building on the Robinhood Chain testnet, across New York, London, Singapore, and Dubai. ➡️ [Apply for Open House NYC](https://luma.com/openhouse-newyork?ref=blog.arbitrum.foundation) ### ERC-8004 is now enabled on Arbitrum [![HAZw3FWacAk-JAg.jpg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HAZw3FWacAk-JAg.jpg)](https://www.8004.org/build?ref=blog.arbitrum.foundation) AI agents now get Onchain identity. Verifiable reputation & Cross-platform discovery. Paired with Arbitrum's deep liquidity and credibly neutral platform, builders can ship trustless AI agents and grow the open agentic economy. ➡️ [Build with ERC-8004 on Arbitrum](https://www.8004.org/build?ref=blog.arbitrum.foundation) ### Dive into the Dynamic Pricing roadmap [![HAbCqzIaYAANC6O.jpg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HAbCqzIaYAANC6O.jpg)](https://blog.arbitrum.io/dynamic-pricing-update-2026/?ref=blog.arbitrum.foundation) ArbOS Dia was just the beginning. While it brought smoother fees to Arbitrum One, its deeper purpose was laying the foundation for Dynamic Pricing. The platform is moving toward a system where fees aren't just a single number, but a reflection of real resource demand. ➡️ [Discover the roadmap](https://blog.arbitrum.io/dynamic-pricing-update-2026/?ref=blog.arbitrum.foundation) ## 📚 Learn & Build *New learning drops and hands-on resources from across the Arbitrum ecosystem.* ### Build end-to-end Arbitrum dApps with ClaudeAI skill [![Screenshot 2026-02-13 at 11-57-58 Build a dApp on Arbitrum with Claude - YouTube.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/Screenshot-2026-02-13-at-11-57-58-Build-a-dApp-on-Arbitrum-with-Claude---YouTube.png)](https://www.youtube.com/watch?v=vsejiaOTmJA&feature=youtu.be&ref=blog.arbitrum.foundation) Finally, an AI that actually understands the Arbitrum stack! Go from Idea → working code → deployed. ➡️ [Watch the 8 minute guide](https://www.youtube.com/watch?v=vsejiaOTmJA&feature=youtu.be&ref=blog.arbitrum.foundation) --- ## 🔦 Ecosystem Highlights *Fresh launches and standout threads from around the Arbitrum ecosystem.* ### Ecosystem Spotlight: January Highlights [![HAzkqTubAAAXE3R.jpg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HAzkqTubAAAXE3R.jpg)](https://x.com/arbitrum/status/2021242138646778296?ref=blog.arbitrum.foundation) ➡️ [Dive into the highlights](https://x.com/arbitrum/status/2021242138646778296?ref=blog.arbitrum.foundation) ### Hyungji, one of Korea's largest fashion retail groups, is bringing stablecoin payments to stores via Arbitrum [![HA_Qcg_bsAETUSN.jpg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HA_Qcg_bsAETUSN.jpg)](https://en.bloomingbit.io/feed/news/105962?ref=blog.arbitrum.foundation) Serving millions across 2K+ locations in Asia requires fast, low-cost, reliable rails and Arbitrum is the neutral settlement layer powering retail payments across Asia. ➡️ [Read the news release](https://en.bloomingbit.io/feed/news/105962?ref=blog.arbitrum.foundation) ### Quick 5-min breakdown of EIP-7702 - from EOAs vs Smart Accounts to why this matters for UX, plus a live demo on Arbitrum If you've been curious about EIP-7702, here's the shortcut you don't want to miss. A video by the Ethereum Foundation's Founder Success Manager, Abbas Khan. ➡️ [Watch the video](https://x.com/KhanAbbas201/status/1970412827291632020?ref=blog.arbitrum.foundation) --- ## 🛠️ Dev Tooling & Infra *Updates to SDKs, CLIs, and developer workflows across the stack.* ### Move is now live on Arbitrum [![Screenshot 2026-02-13 at 11-50-38 Welcome Move to Arbitrum Rather Labs.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/Screenshot-2026-02-13-at-11-50-38-Welcome-Move-to-Arbitrum-Rather-Labs-1.png)](https://www.ratherlabs.com/blog/welcome-move-to-arbitrum?ref=blog.arbitrum.foundation) Move smart contracts can now run on Stylus via the Move-to-WASM compiler - alongside Rust, C, & C++. New languages, new primitives, new design space for Move devs on Arbitrum. ➡️ [Build with Move now](https://www.ratherlabs.com/blog/welcome-move-to-arbitrum?ref=blog.arbitrum.foundation) ### WakeUpLabs Stylus libraries are now part of the official Stylus SDK This pushes AssemblyScript adoption forward and helps grow the developer ecosystem on Arbitrum. ➡️ [Check out the SDK](https://github.com/OffchainLabs/stylus-sdk-rs/blob/main/README.md?ref=blog.arbitrum.foundation) ### Introducing arbos-foundry – a fork of Foundry that brings native support for testing Stylus programs [![HAybcOsaAAIWven.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HAybcOsaAAIWven.png)](https://iosiro.com/blog/introducing-arbos-foundry-native-stylus-testing-with-foundry?ref=blog.arbitrum.foundation) With arbos-foundry, you can now run arbos-forge test to execute Stylus WASM programs natively. No network forks or external dependencies, just fast local testing. ➡️ [Use arbos-foundry now](https://iosiro.com/blog/introducing-arbos-foundry-native-stylus-testing-with-foundry?ref=blog.arbitrum.foundation) --- ## 🗓️ Events *Workshops, hackathons, and ecosystem meetups to watch.* ### Arbitrum goes to ETHDenver with Open House Gather [![HAycWzRawAAtoTl.jpg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/02/HAycWzRawAAtoTl.jpg)](https://luma.com/openhousegather-denver?ref=blog.arbitrum.foundation) Join us alongside Alchemy on Feb 18th during ETHDenver at Shake Shack, and hang out with founders and builders from the Arbitrum ecosystem. Stick around for a 5-min hacking challenge (Winner gets an all-paid trip to our NYC Founder House this March!) ➡️ [Sign up](https://luma.com/openhousegather-denver?ref=blog.arbitrum.foundation) --- ## 🧵 Forum & Community Discussions *What builders are debating and proposing this week.* ### DVP Quorum for ArbitrumDAO - Temperature Check passed This proposal aims to finalize the final parameters for upgrading ArbitrumDAO's quorum computation logic to be based on delegated voting power (DVP). ➡️ [Read the proposal](https://snapshot.box/?ref=blog.arbitrum.foundation#/s:arbitrumfoundation.eth/proposal/0x3ac48360cb2cf6f921e391a97416a53c8ca442e3a621a9f7bb406719a8f8034d) --- That’s all from Builder’s Block #011\. Thank you for reading, and keep building. Arbitrum Everywhere.