Aave V4 Introduces Unified Liquidity Architecture with Hubs and Spokes System

The MetaMask Card is now available across 49 US states, including New York, marking a significant expansion after two years of pilot testing. **Key Features:** - Users can spend yield-bearing stablecoins directly from their wallets - Powered by Aave Protocol for generating yield - Available across both Europe and the United States The card bridges DeFi and traditional payments by allowing users to earn yield on their stablecoins while maintaining spending flexibility. This launch represents one of the first mainstream applications combining self-custodial wallets with traditional payment infrastructure at scale.

**Aave has crossed $1 trillion in all-time loans**, marking a historic first for decentralized finance. This milestone comes as the protocol continues expanding across multiple fronts: - Surpassed $575 million in deposits on Mantle network - Became the first lending protocol with over $1 billion in real-world assets (RWAs) deposited - Launched Aave Horizon, the largest market for RWA-backed loans on Ethereum Aave Horizon provides 24/7 instant liquidity while maintaining compliance requirements. The platform uses a unified reserve architecture where all stablecoins flow into one shared pool, creating a base layer for developers to build upon. Aave Horizon Earn offers users stablecoin yield from KYC'd institutional borrowers through ERC-4626 vaults that can be embedded by wallets, exchanges, and treasury platforms. The protocol recently went live on Mantle in collaboration with Bybit, reaching $350 million in deposits within the first week.

A new audit contest is available on Sherlock's platform. Security researchers and auditors can participate in **Contest 1209** to identify vulnerabilities and earn rewards. - Contest accessible at [Sherlock platform](https://audits.sherlock.xyz/contests/1209) - Open for community participation - Part of ongoing security review process This follows previous contest activity, indicating continued focus on protocol security through community-driven auditing.

**Aave V4** has entered its **open security review phase** on Sherlock DeFi, marking a key milestone in the protocol's development. The review invites participation from: - Previous Aave auditors - Developers familiar with lending-pool mechanics - Security researchers interested in DeFi protocols This follows Aave Labs' September roadmap announcement, which outlined the final stages before V4's launch including public documentation, testnet deployment, and codebase release. The open review represents a **community-driven approach** to protocol security, allowing experienced auditors to contribute to one of DeFi's most significant upgrades.

**MetaMask's mUSD stablecoin** has been listed on Ethereum Core and Linea Build markets, expanding lending options for users. - Users can now **supply and borrow mUSD** on both platforms - This marks continued expansion for mUSD, the first stablecoin from a self-custodial wallet - Previously announced integration with Linea ecosystem for seamless on-ramps and swaps The listing provides new **DeFi lending opportunities** with MetaMask's native stablecoin across multiple networks.