Base Launches Azul Upgrade, Takes Step Toward Stage 2 Decentralization

§ 01 Executive Snapshot

• What: Base activated its Azul network upgrade, marking a pivotal step towards Stage 2 decentralization.
• Who: Base, a Layer 2 blockchain incubated by Coinbase, and Ethereum co-founder Vitalik Buterin's proposed finalization roadmap.
• Why it matters: The upgrade enhances the security and efficiency of the Base network, enabling onchain bug detection and improving transaction throughput.

§ 02 Key Developments

• The Azul upgrade was launched on the Base Sepolia testnet on April 21 and targeted for mainnet on May 13.
• Multiproofs were activated, allowing either trusted execution environment (TEE) or zero-knowledge (ZK) proofs to finalize block proposals independently.
• Base currently holds $4.38 billion in total value locked and supports $1.37 billion in daily DEX volume, with a stablecoin market cap of $4.66 billion on-chain.

§ 03 Strategic Context

• The upgrade aligns with Vitalik Buterin's decentralization framework for Layer 2 networks, which defines Stage 2 as a point where proof system bugs can be detected and handled onchain.
• Base achieved Stage 1 in April 2025, when it established a decentralized Security Council, and has progressively improved its system’s resilience and efficiency.

§ 04 Strategic Implications

• The immediate consequence of the upgrade is enhanced security and faster transaction withdrawal times, crucial for user trust and network adoption.
• Long-term implications include positioning Base as a competitive Layer 2 solution by achieving high throughput and low latency in transactions, essential for scaling.

§ 05 Risks & Constraints

• Potential risks include technical challenges in migrating node operators to the new client stack and ensuring the robustness of the multiproof system against attacks.
• Competition from other Layer 2 solutions could pose a threat, particularly if they achieve similar or superior performance metrics without the same level of decentralization.

§ 06 Watchlist / Forward Signals

• The next performance-focused upgrade is expected by the end of June 2025, which will include several enhancements to the protocol.
• The launch of Base Vibenet in mid-May 2025 will serve as a testing ground for upcoming features, providing insights into future developments and user feedback.