> ## 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 #010: OpenHouse NYC Kicks off Feb 5th - Get to Know our Sponsors - URL: https://blog.arbitrum.foundation/builders-block-010-openhouse-nyc-kicks-off-feb-5th-get-to-know-our-sponsors/ - Published: 2026-02-03T13:00:41.000Z - Updated: 2026-02-03T13:00:40.000Z - Author: Arbitrum Foundation - Tags: Builder Newsletter 💡 ****What's Important This Week** 💸 OpenHouse **NYC Sponsors** Announced 🤖 ****Nethermind** ****Client** synced with ****Arbitrum** 🦄 Uniswap CCA live on Arbitrum ## 📣 Announcements *Key updates from the Arbitrum ecosystem and Foundation.* ### Everything you need to know for Open House NYC 2026 ![G_RrCVyaYAAcmgD.jpeg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/01/G_RrCVyaYAAcmgD.jpeg) Build. Ship. Scale. We're about to kick off our online Buildathon phase on Feb 05, with plenty of new announcements and 5 confirmed sponsors. We've also prepared a detailed explanation of what to expect at Open House NYC. ➡️ [Everything about OpenHouse](https://x.com/Swagtimus/status/2016536710260089219?ref=blog.arbitrum.foundation) ### How Arbitrum Handled an Extreme TPS & Gas Spike This weekend, the market wiped out $220B in a matter of hours. Every chain was stress-tested at the same time. Thanks to the recent protocol update, ArbOS 51, which introduced different gas pricing windows, peaks were absorbed smoothly. Want to know why? Check out the video below 👇 > $220B wiped from the crypto market over the weekend. > > Every chain was stress-tested at once. > > Median fees: The L1 hit $8.66, other L2s hit $0.61, [@arbitrum](https://twitter.com/arbitrum?ref%5Fsrc=twsrc%5Etfw&ref=blog.arbitrum.foundation) hit $0.20\. > > Here's why. [pic.twitter.com/vfUMiVSgmX](https://t.co/vfUMiVSgmX?ref=blog.arbitrum.foundation) > > — Ben Greenberg (@hummusonrails) [February 3, 2026](https://twitter.com/hummusonrails/status/2018596190896689520?ref%5Fsrc=twsrc%5Etfw&ref=blog.arbitrum.foundation) ## 📚 Learn & Build *New learning drops and hands-on resources from across the Arbitrum ecosystem.* ### A complete Stylus recap by Thirdweb Thirdweb, a leading software development company, shared a detailed recap outlining what their contribution to Arbitrum Stylus looks like: Airdrop contracts, ZK proof templates, modular Rust modules, and full SDK support. ![Thirdweb-stylus.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/01/Screenshot-2026-01-29-at-18.50.11.png) [Follow the recap](https://x.com/ArbitrumDevs/status/2013638220609700311?ref=blog.arbitrum.foundation) ### Building on Arbitrum: Mastering Scaffold Stylus Session [@Dev3Pack](https://x.com/dev3pack?ref=blog.arbitrum.foundation) and [@themetalboyrick](https://x.com/themetalboyrick?ref=blog.arbitrum.foundation) put together a detailed workshop that covers topics such as client communications, live coding demos, and step-by-step builder guides. ➡️ [Start building with Stylus](https://www.scaffoldstylus.com/?ref=blog.arbitrum.foundation) --- ## 🔦 Ecosystem Highlights *Fresh launches and standout threads from around the Arbitrum ecosystem.* ### Uniswap Continuous Clearing Auctions are now live on Arbitrum Don't lose out on this new liquidity bootstrap standard. Uniswap CCA's introduce onchain-native market creation, more fair and gradual price discovery, as well as automatic liquidity seeding on Uniswap V4. ![CCA-Blog-Post-3__2_.png](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/01/CCA-Blog-Post-3__2_.png) [Discover Uniswap CCA](https://cca.uniswap.org/?ref=blog.arbitrum.foundation) ### Arbitrum DAO Commits $6M in Grants to Help Fund Ecosystem Arbitrum DDA 3.0 is a one-year Grant Program with a total budget of $6.75M. The program is aimed at supporting developers across five high-demand categories, including New Protocols and Ideas ($1.5M), Dev Tooling ($1.5M), Gaming ($1.5M), Education+events ($1.5M), and a new experimental Orbit campaign ($750K). Have an idea? Apply to fund your proposal👇 [Fund your Proposal](https://arbitrum.questbook.app/?ref=blog.arbitrum.foundation) ### Confidential Stablecoin Payments app Privara Launches on Testnet With demand for onchain privacy picking up steam, Privara, a privacy-preserving payments app powered by Fully Homomorphic Encryption (FHE) is now live on testnet. [Check the announcement](https://x.com/PrivaraXYZ/status/2016965397438685338?ref=blog.arbitrum.foundation) --- ## 🛠️ Dev Tooling & Infra *Updates to SDKs, CLIs, and developer workflows across the stack.* ### Nethermind Sync Complete on Arbitrum Sepolia The Nethermind Arbitrum Nitro plugin has synced on Arbitrum Sepolia, and now functions in archive mode. The Nethermind client now covers Stylus execution, as well as all recent ArbOs upgrades (including Dia). ![G_BUWCoXQAAf6rS.jpeg](https://storage.ghost.io/c/d4/cc/d4cc8040-691e-4dd2-8282-0c08d45fc5a8/content/images/2026/01/G_BUWCoXQAAf6rS.jpeg) ➡️ [Explore Arbitrum Upgrade](https://docs.arbitrum.io/run-arbitrum-node/arbos-releases/arbos51?ref=blog.arbitrum.foundation) ### Tooling update on Arbitrum Nova To better improve efficiency for our developers, the Arbitrum Nova tool set will be updated throughout the course of 2026, with the first tooling update having already being added on Jan 31st ➡️ [Changes to Arbitrum Nova](https://x.com/ArbitrumDevs/status/2013638220609700311?ref=blog.arbitrum.foundation) --- ## 🧵 Forum & Community Discussions *What builders are debating and proposing this week.* ### New Proposal: Onchain Scoring for Arbitrum Gaming Guilds An ecosystem contributor recently introduced a reputation engine, a modular framework designed to quantify DAO contributions and mitigate Sybil attacks. It uses real-time Arbitrum data and Snapshot history to build verifiable reputation scores. [Review the proposal](https://forum.arbitrum.foundation/t/introducing-guild-reputation-engine-on-chain-scoring-for-arbitrum-gaming-guilds-live-mvp-api/30399?ref=blog.arbitrum.foundation) ### Arbitrum Open House Youtube Announcement Still not sure what OpenHouse is? Want some tips on how to get involved? We answer all of your questions in our recent YouTube video. --- That’s all from Builder’s Block #010\. Thank you for reading, and keep building. Arbitrum Everywhere.