Ethereum was cheaper than anticipated in 2020, and rollup decentralization was slower than promised in 2021. These two realities are compelled the ecosystem to rewrite what “a layer-2” is for.
Vitalik Buterin’s current submit on Ethereum Analysis bluntly frames the shift: the unique imaginative and prescient of layer-2 (L2) blockchains as “branded shards” of Ethereum is not viable, and the ecosystem requires a brand new path.
Nonetheless, this is not abandonment. As a substitute, it’s a re-tiering of expectations and a sharper definition of what several types of rollups are literally constructing.
The query now could be the brand new job description, for the reason that premise underlying the rollup-centric roadmap has weakened.
Stage 2 is scarce
L2BEAT gives the clearest framework for understanding rollup decentralization via its Levels system.
Stage 0 denotes that coaching wheels stay in place, with significant belief assumptions persisting.
Stage 1 represents partial decentralization with stronger escape hatches and proof ensures, however nonetheless significant improve or governance belief.
Stage 2 is the “no coaching wheels” milestone, wherein vital security properties are enforced by code relatively than by discretionary actors.
The present distribution of worth secured throughout the L2 ecosystem signifies this. In accordance with L2BEAT’s rollup scaling abstract, roughly 91.5% of the listed worth sits in Stage 1 rollups, 8.5% in Stage 0, and roughly 0.01% in Stage 2.
The highest three rollups by worth account for roughly 71% of the overall, indicating that “Stage 2 progress” largely is determined by the choices of the biggest few tasks, relatively than on what smaller experimental chains try.
The core blocker is whether or not the proof techniques might be overridden and whether or not upgrades face sturdy delays and constraints.
Improve discretion stays widespread among the many largest rollups, and transferring past it has confirmed slower and harder than anticipated by the 2020-2021 optimism.
Some tasks have explicitly acknowledged that they might not want to proceed past Stage 1, citing not solely technical constraints associated to zkEVM security but additionally regulatory necessities that require absolute management.
That is a authentic product determination for sure buyer bases, nevertheless it clarifies that these chains will not be “scaling Ethereum” within the sense the rollup-centric roadmap initially meant.
ProjectStageTVS ($)Proof typeUpgrade key / safety council current?NotesArbitrum One116.16BOptimisticYesEmergency path can skip delaysBase Chain110.99BOptimisticYesUpgrades accredited by a number of events; no delayOP Mainnet11.88BOptimisticYesSecurity council prompt improve powerLighter0 (Appchain)1.27BValidityYes21d delay, emergency can go to 0Starknet1676.17MValidityYesSecurity council can improve with no delayInk1523.71MOptimisticYesSecurity council + basis approvals; no common delayLinea0492.93MValidityYesMultisig can improve with no delayZKsync Era0417.07MValidityYesEmergency board can bypass improve delaysKatana0297.94MValidityYessecurity council can take away the improve delayUnichain1168.81MOptimisticYesno exit window for normal upgrades; prompt powers
Why the constraints modified
The Oct. 2, 2020, submit “A rollup-centric Ethereum roadmap” on the Fellowship of Ethereum Magicians laid out the unique thesis.
Gasoline costs had been climbing, some purposes had been being compelled to close down, and the conclusion was that the ecosystem can be “all-in on rollups” for the close to and medium time period.
Base-layer scaling ought to prioritize knowledge capability for rollups, and customers would more and more dwell on L2.
Two onerous details have shifted since then. First, L1 is considerably cheaper at current. Etherscan reveals a seven-day common transaction payment of round $0.35 and gasoline snapshots within the fractions of a gwei.
On Jan. 16, Ethereum recorded an all-time excessive of two,885,524 transactions in a single day. The narrative is “busier and cheaper,” precisely the other of the 2020 disaster that motivated the rollup-centric roadmap.
Second, L1 execution capability is rising. Ethereum’s block gasoline restrict was raised to roughly 60 million after broad validator signaling in late 2025, up from the long-standing 30 million restrict.
At roughly 12-second blocks, 60 million gasoline interprets to roughly 5 million gasoline per second.
Aspirational group discussions have talked about targets as excessive as 180 million gasoline, which might symbolize a threefold enhance, although that is still directional relatively than dedicated.
The clear interpretation: the 2020 premise that “L1 cannot scale for many customers” is weaker in in the present day’s payment regime. This creates room for L2s to be a spectrum of safety and sovereignty trade-offs relatively than all being near-identical “shards” competing solely on worth.
L2s as a spectrum, not clones
Buterin’s proposed reframing treats L2s as occupying a full spectrum.
On one finish are chains backed by the complete religion and credit score of Ethereum, with distinctive properties, not simply EVM clones but additionally privacy-focused techniques, non-EVM execution environments, or ultra-low-latency sequencers.
On the different finish are choices with various ranges of Ethereum connectivity that customers and purposes can select based mostly on their particular wants.
The brand new minimal bar is easy: should you deal with ETH or Ethereum-issued belongings, attain not less than Stage 1.
In any other case, you are a separate L1 with a bridge, and may name your self that. The differentiation bar is tougher: be one of the best at one thing apart from “low cost EVM.”
Examples Buterin cites embrace privateness, effectivity specialised to a selected software, really excessive scaling past even an expanded L1, essentially totally different designs for non-financial purposes reminiscent of social or id techniques, ultra-low-latency sequencing, or options reminiscent of built-in oracles or decentralized dispute decision that are not computationally verifiable.
The mechanism which may facilitate that is nonetheless beneath investigation. A “native rollup precompile” would allow Ethereum to confirm a normal zkEVM proof throughout the protocol.
For rollups which can be “EVM plus extras,” this implies the canonical EVM verification happens trustlessly on the protocol stage, and the rollup solely must show its customized extensions individually.
This might allow stronger interoperability and pave the way in which for synchronous composability, wherein contracts throughout totally different rollups can work together throughout the identical transaction. But, it stays a analysis trajectory, not a deployed function.
The Jan. 16 submit “Combining preconfirmations with based mostly rollups for synchronous composability” and the Feb. 2 submit “Synchronous composability between rollups by way of realtime proving” lay out the design house however do not symbolize shipped protocol adjustments.
Three buckets rising
If this reframing takes maintain, anticipate rollups to separate into clearer classes.
The primary bucket is Stage 2-chasing settlement rollups that maximize Ethereum safety inheritance.
These tasks goal to realize code-enforced ensures with minimal discretionary governance, treating “scaling Ethereum” as their core mandate.
The second bucket is regulated or managed execution environments.
These optimize for compliance, permissioning, or particular institutional necessities. They could by no means progress past Stage 1 by design, and they need to market that management actually as a function relatively than pretending to supply full decentralization.
The third bucket is specialised chains optimized for latency, privateness, app-specific execution, or non-financial use circumstances.
Privateness rollups utilizing zkProofs to cover transaction particulars, ultra-low-latency sequencers for buying and selling purposes, or social and id techniques with essentially totally different state fashions all fall inside this class.
These do not have to be EVM-compatible and even monetary to justify their existence, they should present worth that their customers cannot get elsewhere.
Tasks reminiscent of Arbitrum One, Optimism, Base, zkSync Period, and Starknet will every have to determine which class they’re pursuing. The ecosystem is massive sufficient to help all three, however the assumption that each L2 performs the identical operate is fading.
What adjustments for customers and builders
For customers, the burden shifts to understanding ensures. Escape hatches, improve delays, proof techniques, and censorship resistance change into product differentiators relatively than assumed properties.
Wallets and interfaces might want to label belief assumptions extra explicitly, and the L2BEAT Levels framework goals to make these assumptions legible.
For builders, “low cost EVM” is commoditized. Differentiation strikes to privateness and customized digital machines, ultra-low-latency sequencing, app-specific throughput optimizations, non-financial purposes in social, id, or AI contexts, or compliance and permissioning as an express product, with out claiming it is “Ethereum scaling.”
For the broader market narrative, anticipate a louder debate about whether or not L2s “inherit Ethereum safety” in apply relatively than as an aspiration.
The critique is already a speaking level amongst rival L1 proponents, and the ecosystem’s acknowledgment that many massive rollups stay at Stage 1 with discretionary governance offers that critique better traction.
Is an L2 revolution about to begin?
Ethereum is unlikely to see an L2 revolution. As a substitute, it can witness a re-tiering.
The rollup-centric roadmap assumed that L2s can be near-identical “branded shards” competing totally on price, whereas L1 would stay costly and capacity-constrained.
That assumption not holds. L1 is cheaper and increasing, whereas L2s are diverging sooner than they’re converging of their safety fashions and use circumstances, regardless of Stage 2 decentralization.
The brand new path acknowledges that actuality. L2s that custody ETH or Ethereum-issued belongings ought to meet a minimal safety bar, Stage 1 not less than. And past that, they need to compete on specialization and express ensures relatively than pretending to be interchangeable.
Native verification primitives and analysis on synchronous composability sign the place Ethereum goals to make that simpler, however these are trajectories, not deployed options.
The job description modified.
The minimal bar is to supply credible safety when dealing with Ethereum belongings. The differentiation bar is being one of the best at one thing, and being trustworthy in regards to the belief mannequin.
The rollup-centric roadmap bought upgraded to accommodate the truth that L1 is scaling and L2s are extra numerous than the unique imaginative and prescient anticipated.
