Base, the Ethereum Layer 2 network incubated by Coinbase, has activated the Azul upgrade on its mainnet. This marks its first independent network upgrade since separating from the Optimism Superchain. The Azul upgrade introduces a multi-proof system combining Trusted Execution Environment (TEE) and Zero-Knowledge (ZK) proofs, allowing for state finality with either proof independently. When both proofs agree, withdrawal finality is reduced to approximately one day. In case of conflicts, the decentralized ZK proof overrides the TEE proof, enhancing censorship resistance and decentralization. The upgrade also standardizes the execution client to base-reth-node and introduces the base-consensus client based on OP Kona, reducing daily empty blocks from about 200 to approximately 2. During stress testing, the network supported up to 5000 transactions per second.