Ethereum co-founder Vitalik Buterin has published a new essay arguing that the network is turning into a fundamentally different kind of system from the blockchain described in Bitcoin's original whitepaper. According to Buterin, the upgrades planned after the upcoming Hegota fork — scheduled for next year — will make Ethereum qualitatively distinct from traditional blockchains, combining zero-knowledge proofs, optimized consensus and decentralized off-chain computation. Those proofs are the technology anchoring the essay's vision: they let one party prove to another that a computation was carried out correctly without revealing the underlying data behind it.

In the essay, titled “The cryptographic world computer” and published on September 27, Buterin compared the Bitcoin whitepaper's original design assumptions with Ethereum's expected state by 2030. Nearly every core property, he wrote, has changed or is set to change:

• Transaction authorization may rely on quantum-safe signatures or zero-knowledge proofs instead of conventional signatures.
• Consensus has moved from proof-of-work to proof-of-stake — through 2022's Merge upgrade — with few-slot finality.
• Block verification is shifting from re-downloading and re-executing entire blocks to verifying SNARKs — succinct cryptographic proofs that computation was done correctly — and sampling data via PeerDAS (Peer Data Availability Sampling).
• Block construction is evolving from a single miner assembling blocks to multi-participant schemes such as FOCIL (Fork-Choice Inclusion Lists) and dedicated builder roles.

Light clients, meanwhile, will be able to verify both consensus and validity — including data availability and computation — rather than trusting an honest majority.

The cryptographic world computer: My attempt to express in somewhat concise terms the true of basically everything planned to happen to Ethereum starting from the fork after Hegota. It's really not just a blockchain anymore. It's a hybrid…
n> — vitalik.eth (@VitalikButerin) September 27, 2026

Buterin noted that Ethereum retains the core Satoshian ideas — uptime, censorship resistance, guaranteed execution and irreversibility — but layers on cryptographic machinery that did not exist in mature form in 2009, including ZK-SNARKs (zero-knowledge succinct non-interactive arguments of knowledge) that enable privacy of reads, writes and account policy. He described the result as a hybrid architecture rather than a conventional blockchain, arguing that the term “blockchain” applies to post-Lean Ethereum largely for historical reasons.

Why Decentralization Starts Helping Performance, Not Just Security

A central argument of the essay is that decentralization is shifting from a pure cost incurred for robustness into, in some cases, a performance advantage. The network can store larger volumes of data in parallel, execute computation in parallel — often within the mempool before transactions reach a block — and, in limited cases, deliver privacy that only decentralized systems can offer by hiding metadata about where requests originate.

Buterin noted that this revives an early Ethereum ambition from the mid-2010s: decentralizing not only for safety but for scale. The missing ingredient at the time was verification — splitting work among participants requires proving that each unit was done correctly, and earlier committee-based designs were costly, slow and offered no recourse when they failed. Modern cryptography, he argued, has solved this problem, with the overhead of such solutions falling steadily.

The essay also highlights how the economics of computation are changing. In future architectures, monolithic, serially executed transactions will be far more expensive than computation structured as encapsulated, parallelizable dependencies. Over time, this is expected to push application design toward posting only ordering-critical state changes onchain while aggregating everything else beforehand.

Looking further ahead, Buterin identified indistinguishability obfuscation (iO), a long-pursued cryptographic technique for running programs while concealing their internal logic, as a possible next frontier — one that could eliminate the tradeoff between privacy and generalized computation entirely, with weaker versions already applicable to encrypted mempools.

He cautioned that significant challenges remain, particularly around making zero-knowledge proofs efficient and safe — though he described this as encapsulated complexity already being optimized with AI tools — and around managing and parallelizing access to very large state. Hegota, he concluded, is likely to be Ethereum's last “normal” fork recognizable to a 2015 observer; everything afterward centers on recursive STARKs, automated formal verification and quantum safety. With the fork slated for next year, Hegota effectively marks the threshold after which that cryptographic-first agenda begins.

The full essay is available via Buterin's X post. This article first appeared on Metaverse Post.