Apply to the Arbitrum Citizens Retrofunding Round 1

**USDAI introduces GPU-backed lending primitive** USDAI has processed nearly $50M in loans collateralized by GPU infrastructure, demonstrating a new model for financing productive assets onchain. **Key developments:** - GPU systems now serve as collateral for onchain loans - Arbitrum provides the infrastructure layer for these programmable credit markets - Model shows how physical computing resources can be integrated into DeFi This approach enables businesses to access liquidity using their GPU infrastructure as backing, creating a bridge between physical computing assets and onchain finance.

**MoonPay launches Open Wallet Standard (OWS)** - a security framework enabling AI agents to safely handle crypto operations on Arbitrum. **Key capabilities:** - Secure key storage for autonomous agents - Cross-chain wallet management from a single interface - Transaction signing with built-in guardrails The standard is now live on Arbitrum, with 15+ contributors working on scaling agentic payments onchain. Developers can integrate OWS to build applications in the emerging agentic programmable economy. [Learn more about implementation](https://arbitrum.io)

**Final day to apply for Arbitrum's 8-week Mentorship Program** starting April 13th. **What's offered:** - Hands-on mentorship from industry leaders including Robinhood Chain, Variational, Dai, and Pendle - Direct access to top VCs (Pantera Capital, Electric Capital, Lightspeed, IOSG, Arca) - Infrastructure credits and tooling from AWS, Alchemy, Dune, MoonPay, QuickNode - $100K+ in prizes at Demo Day **Program focus:** - Product strategy and go-to-market design - Liquidity and network design - User acquisition and distribution - Fundraising preparation **Who should apply:** Early-stage teams (MVP, pre-seed, or seed) building new onchain primitives and contributing to the programmable economy on Arbitrum. [Apply now](https://tally.so/r/aQdj2W)

**USDai has originated its largest loan to date on Arbitrum**, marking a significant milestone for institutional DeFi infrastructure. The development highlights Arbitrum's growing role as the platform of choice for programmable finance. Recent innovations like **Fiet are enabling institutions to prove reserves offchain while committing liquidity onchain**, eliminating the need to move capital entirely onchain. **Key developments:** - Institutions can now keep capital in existing custody systems while making it programmable - Boros by Pendle reached $338.5M in daily volume on Arbitrum's funding rate markets - Reserve-backed liquidity model offers lower costs and better capital efficiency This approach meets institutions where their capital already lives, making DeFi integration more practical. [Learn more about the model](https://blog.arbitrum.io/how-fiet-made-reserve-backed-liquidity-practical-onchain/)

A new program is connecting early-stage blockchain teams with capital and investors through a structured approach. **Key Features:** - Direct investor exposure via curated introductions and Demo Day - Over $100,000 in prizes available - Access to top-tier venture partners **Participating Investors:** - Pantera Capital - Tandem by Offchain - Electric Capital - Lightspeed Venture Partners - IOSG Ventures - Arca The initiative focuses on bootstrapping teams in their early stages, providing both funding opportunities and networking with established venture capital firms in the web3 space.