PANews reported on April 30 that according to Decrypt, Ethereum's ZK-Rollup expansion solution Scroll announced the completion of the Euclid upgrade, becoming a ZK Layer2 network that meets the "Phase 1" decentralization standard. The upgrade was implemented through a community vote in March. The main upgrade contents include: realizing anti-censorship transaction submission, even if the operator is down, transactions can still be submitted to the main network through smart contracts; developing OpenVM tools to solve the capacity limit of ZK proofs, and large transactions can be disassembled for verification; setting up a 12-member security committee (including only 2 Scroll members), and major decisions require the consent of 9 people.

Rollups typically start in Phase 0, where they are fully controlled by the team, then move into Phase 1, where smart contracts take over but security committees can step in, and finally into Phase 2, where the system runs entirely on code with no control from a central operator.