Ethereum is set to evolve into a "cryptographic world computer," a system that integrates blockchain technology, privacy, verification, and decentralized off-chain components, according to co-founder Vitalik Buterin.
The cryptographic world computer:https://t.co/ueayODeUPo
— vitalik.eth (@VitalikButerin) September 27, 2026
My attempt to express in somewhat concise terms the true meaning 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…
Buterin analyzed Bitcoin's white paper section by section, comparing its principles with Ethereum's structure over the years 2015, 2025, and 2030. He noted that nearly every fundamental characteristic of blockchain has already undergone significant changes or will soon.
He highlighted major shifts in three key areas:
- Block Formation — the traditional single-party model will transition to various schemes that distribute authority among multiple parties;
- Verification — instead of requiring every full node to download data and re-execute computations, the network will adopt selective verification of data availability through PeerDAS and confirmation of computations using SNARK proofs;
- Consensus — Ethereum has already transitioned from Proof-of-Work to Proof-of-Stake, and Buterin believes this consensus mechanism will become even more efficient.
Even after the implementation of Lean Ethereum, the network will still be referred to as a blockchain largely for historical reasons. In reality, it will be a hybrid system that merges the foundational ideas of Satoshi Nakamoto with cryptographic technologies that either did not exist or were not mature enough in 2009, Buterin emphasized.
Distributed Computing Among Participants
One of the elements of this transition has already been implemented with PeerDAS, introduced as part of Fusaka in December 2025. This mechanism allows validators to verify selective fragments of BLOB data rather than downloading everything.
Buterin anticipates that this approach will eventually extend to entire blocks of content. The correctness of the computations themselves can be validated through compact cryptographic proofs, he noted.
This will enable different computers to tackle various tasks without requiring the entire network to repeat the same work.
According to Buterin, as early as the mid-2010s, Ethereum developers aimed to utilize decentralization not only for resilience but also to enhance performance. A significant challenge at that time was verifying that each participant had correctly completed their assigned task.
Modern cryptography has addressed this issue, and the costs associated with this approach are decreasing monthly. As a result, in some cases, decentralization is becoming advantageous even from a performance standpoint.
A distributed network allows for greater parallel storage of data and increased computational capacity—often still in the mempool.
Decentralization may also enhance privacy by concealing metadata, such as the origins of data and requests.
However, Buterin acknowledged that Ethereum will not be able to compete with centralized servers in terms of latency. Nevertheless, the decentralized infrastructure built around blockchain has the potential to approach their performance metrics.
The architecture of applications is also expected to change. The programmer hinted that over time, primarily data necessary for describing state changes and determining the order of operations will be included directly in the blockchain. Other computations may be aggregated prior to the inclusion of transactions in a block.
The Last 'Standard' Fork
Buterin pointed to Hegota as the next significant milestone. He predicts this upgrade will be the last "standard" fork of Ethereum featuring technologies recognizable to a developer from 2015.
According to ethereum.org, the upgrade is tentatively scheduled for the second quarter of 2027, although the date remains unconfirmed, and the complete scope of the update has yet to be defined.
Two changes have already been planned: FOCIL (EIP-7805) and Frame Transactions (EIP-8141), which the Ethereum Foundation has identified as essential for the upgrade.
Post-Hegota, Buterin anticipates that the development of the network will focus on:
- STARK proofs;
- automated formal verification;
- consensus optimization;
- quantum resistance.
From this stage onward, the transformation of Ethereum into a "cryptographic world computer" is expected to be the central theme of protocol development, he stressed.
However, several technical questions remain unresolved. Buterin described the creation of efficient and secure ZK proofs as a complex yet relatively isolated challenge.
He considers managing Ethereum's vast state and organizing parallel access to it as a more serious issue.
In July, Buterin identified quantum resistance, privacy, and scalability as the key focuses of Lean Ethereum. This concept is designed for a series of changes over the next three to four years that will affect nearly all fundamental components of the protocol.
In August, the Ethereum co-founder elevated the priority of post-quantum protection. The Ethereum Foundation aims to make the network's base level resilient to quantum attacks at the execution, consensus, and data levels by approximately 2029.
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