DeriProtocol is the first active L3 project on Arbitrum One featured on L2BEAT

**Month 2 of Arbitrum x Kaito Leaderboard begins** with **700,000 ARB bounty** up for grabs. - Month 1 snapshot completed - fresh start for all creators - **No threshold required** - small and large creators welcome - Arbitrum-associated accounts ineligible - Top 150 creators visible on leaderboard Creators can earn ARB tokens by creating Arbitrum-related content and climbing the rankings. [Check leaderboard progress](https://yaps.kaito.ai/arbitrum) | [Learn more about Season 2](https://blog.arbitrum.io/arbitrum-x-kaito-season-2/)

**Major Arbitrum ecosystem wins this week:** - **DeFi Renaissance momentum**: DRIP Epoch 5 launches with eligible USD assets surpassing **$1B market cap** in just 2 months - **Historic trading volume**: Arbitrum becomes first L2 to cross **$400B in swap volume** on Uniswap - **Derivatives growth**: OstiumLabs reaches new ATH with **$307M open interest** across commodities ($138M), indices ($75M), and stocks ($64M) - **Builder opportunities**: Castle Labs offers **up to $50K+ grants** from ArbitrumDAO for creative onchain ideas - **New launches**: Printr goes live on Arbitrum Market observers note this feels like the "start of arbitrum season" as the L2 continues expanding its DeFi ecosystem. The milestone achievements demonstrate growing institutional and retail adoption across multiple verticals. *Builders with innovative ideas can apply for ArbitrumDAO grants through Castle Labs.*

**Arbitrum** is hosting multiple events in Buenos Aires this November during Devconnect. **ArbiVerse Buenos Aires** - November 19th - Interactive builder showcases - Technical talks and presentations - Mini games and live music - Food and networking opportunities - [Register here](https://luma.com/ArbiVerseBuenosAires) **ArbiPanadas** - November 21st - Community-focused afternoon event - Local food and casual conversations - [Register here](https://luma.com/ArbiPanadas-BuenosAires) **Devconnect L2 District** - November 17-18th - Arbitrum booth presence - Team meetups - **Lattice1 wallet giveaway** by GridPlus The events showcase Arbitrum's "Arbitrum Everywhere" initiative, bringing the L2 community together across multiple touchpoints during the conference week.

**Ostium Labs celebrates its first anniversary on Arbitrum** with impressive metrics that showcase rapid growth in the L2 ecosystem. Key achievements in just 12 months: - **Total trading volume**: $22.2B+ - **Total trades executed**: 300K+ - **Active users**: 13.6K+ The milestone demonstrates **strong adoption** of Arbitrum's scaling solution and highlights how quickly projects can gain traction on Layer 2 networks. Ostium's growth reflects the broader **momentum in Arbitrum's ecosystem**, where projects are achieving significant volume and user engagement faster than traditional Layer 1 alternatives.

**Stylus** offers a unique opportunity for collectors of **Infinite Rainbows** by @JimenaBuenaVida: - Physical redemptions begin Monday, Oct 7 at 12:00pm ET - Mint deadline: Sunday, Oct 6 at 12:00pm ET - Exclusive minting available at http://mintstylus.xyz Don't miss this chance to participate in both digital and physical art collection. Mark your calendars and prepare for this limited-time event. *Visit the official website for more details and to participate in the mint.*