Starknet implemented governance and censorship‑resistance measures, including a security council and smart‑contract‑controlled validity proofs, to reach this milestone

Quotes that support claims

It further noted that they achieved this decentralization milestone by implementing changes such as building censorship-avoidance mechanisms and creating a security council. The system now operates with a fully functional validity proof mechanism governed by smart contracts, while still permitting intervention from a security council.

Starknet added that the framework was the “gold standard onchain tool for analyzing Ethereum scaling solutions,” and said it achieved the milestone through changes such as creating a security council and censorship-avoidance mechanisms.