August 13, 2025 – In a pioneering move for decentralized finance (DeFi), MetaMask has joined forces with the Ethereum Layer-2 network Linea and zero-knowledge (ZK) infrastructure provided by Brevis to unveil an innovative verifiable rewards program for holders of the MetaMask Card.
Beginning August 13, 2025, qualified MetaMask Card users, those with at least one card transaction, automatically start accruing a flat 2.4% APR on USDC lending or borrowing on Aave’s Linea market. No sign-ups, additional liquidity contributions, or manual opt-in processes are needed.
This fully on-chain system operates on Incentra, the ZK-powered platform of Brevis. Zero-knowledge proofs confirm the reward amounts and eligibility in an open and smart way. Calculation of each reward is done in four-hour epochs using time-weighted average balances. It makes the payments precise. A ZK gives proof that is for on-chain validation, providing an unreliable tamper-proof distribution.
Users are motivated for up to a combined 5,000 USDC in lending and borrowing. It allows both passive yield farming and borrowing activity to receive the boost.
Besides yield, MetaMask Card users also receive 1–3% USDC cashback on spending, and up to 10% “Coinmunity” rewards, which can consist of tokens, NFTs, or brand-issued digital assets throughout the Linea ecosystem.
This project seeks to reverse the opacity and usability issues prevalent in DeFi incentive designs of today. Previous systems usually depended on centralized verification, complex onboarding, or covert terms. By contrast, the MetaMask–Linea–Brevis protocol is entirely open and auditable: everybody can review the proof and transaction history on-chain. In statements, participants have described this as a “blueprint for open, permissionless, and tamper-free Web3 incentives.”
In Brevis’ case, the collaboration represents one of the most important milestones in the scaling of ZK infrastructure. Its architecture enables future multi-protocol and cross-chain reward structures—central to providing minimal friction DeFi experiences across chains.
Linea’s Layer-2 protocol enables hassle-free, cost-effective running, and the groundwork for the user to profit without being put off by gas costs or network lag. Concurrently, MetaMask infuses utility into the card chain, adding support for its footprint across spend and yield domains.
What This Means for Users
Analysts expect the model to spur broad-based adoption of verifiable, passive reward mechanisms across DeFi protocols. Success could lead to other chains and protocols implementing similar programs in the not-too-distant future.
Other industry players have conjectured about possible future MetaMask innovations—speculations regarding a MetaMask-authorized stablecoin (mUSD or mmUSD) or a native MASK coin still linger but are not yet confirmed by ConsenSys.
For now, the new rewards structure showcases a future where on-chain transparency, usability, and cross-platform synergy become standard in Web3. This project could very well mark the future of DeFi rewards, balancing passive income, blockchain clarity, and real-world use into one convenient package.
