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Base, the Layer 2 blockchain incubated by Coinbase, activated its Azul network upgrade on mainnet this month, marking the chain's first independent protocol upgrade and a significant step toward Stage 2 decentralization.

The upgrade launched on Base Sepolia testnet on April 21 and was targeted for mainnet on May 13, according to a blog post published by the Base engineering team that day. Multiproofs went live on mainnet by May 21, a follow-up post confirmed.

Azul's most consequential change is the activation of multiproofs, a system that combines trusted execution environment (TEE) provers and zero-knowledge (ZK) provers into a single proof architecture.