The Rise of ETHS Value from Kroma Shutdown: Without decentralization, expansion would be meaningless introduction As the most representative smart contract platform, Ethereum's original mission was to build a permissionless, open, transparent, and censorship resistant execution environment, empowering global users to run contracts, store assets, and collaborate with organizations with minimal trust costs. However, as the user base grows and the complexity of contract applications increases, the Ethereum mainnet faces practical challenges in terms of performance bottlenecks, transaction congestion, and rising gas fees. In this context, scaling is seen as a key path for the sustainable development of the Ethereum ecosystem. Rollup, as the most popular expansion path currently, has quickly gained widespread adoption. However, in reality, most Layer 2 networks have introduced centralized sorters, upgradable contracts, and multi signature governance while improving performance, gradually deviating from the spirit of Ethereum's "decentralization" core. In June 2025, Kroma announced the termination of mainnet operations and required users to manually withdraw assets within 21 days, otherwise they would be permanently locked. This incident has become a real-life footnote to the myth of "traditional Rollup scaling" - without true decentralization, scaling is just another form of center deprivation. This article will delve into the governance concentration, structural risks, and value fragmentation issues of the current L2 ecosystem starting from the Kroma incident. It will focus on the Unstoppable Rollup architecture supported by the Ethereum Foundation and how ETHS, as a native asset under this architecture, rebuilds mainnet consensus, value return, and ecological trust in an unregulated and tamper proof structure.   1. The centralization dilemma of Ethereum L2: The Kroma incident is not an isolated case, but a manifestation of the entire systemic crisis 1.1 Kroma Shutdown Event Review: How an L2 Disappeared Overnight In June 2025, Kroma, an Ethereum L2 scaling network built on Optimism Bedrock, announced that the mainnet would soon be shut down. It's not an upgrade, it's not a migration, it's a complete termination. Users are required to withdraw all assets within 21 days, otherwise they will face the risk of permanent lock up. KRO token ETH、 Pledged assets NFT、 Assets in the liquidity pool - overnight, transformed into unstable digital illusions.   Kroma is essentially an Optimism Rollup with strong centralized control, although it appears to use OP Stack, it has the following typical "controllable" features: Core operations team controls upgrade permissions: Official can directly upgrade contracts and key parameters; Centralized Sequencer: Transaction sorting rights and status updates depend on official entities; Although a mandatory exit mechanism exists, it relies on the support of operational interfaces; The bridging asset migration between L2 and L1 is also centrally managed. It is precisely because all of these architectures still have a 'central dependency' that Kroma announced the termination of the mainnet in a single announcement - and users' asset security, interaction expectations, and on chain contracts instantly turned into technological ruins.