Ethereum co-founder Vitalik Buterin published an article on Sunday outlining a vision for the network's transformation by 2030, planning to evolve it from a conventional blockchain into a system that combines cryptographic proofs with external computation networks.
In the piece, titled "The Cryptographic World Computer," Buterin said the network might still be called a blockchain by then, but it would operate in a fundamentally different way from the current version.
Buterin noted that today's Ethereum network requires every computer to redundantly verify the computations behind transactions, which helps keep the network honest but also means adding more computers does not automatically increase transaction processing capacity, since each machine is busy checking a large amount of identical activity.
He argued that new cryptographic tools can break this limitation: one computer processes a transaction and generates a short mathematical proof showing it followed the rules, and other computers can verify that proof much faster without repeating the entire original computation. Independent spot checks can help confirm that the transaction record remains available for anyone to inspect. This would allow different computers to handle different tasks while checking each other's results.
Buterin wrote that Ethereum developers wanted to distribute work this way a decade ago, but at the time it was difficult to ensure every participant completed their assigned task correctly. He said: "It was not feasible back then, for one main reason: the missing ingredient was verification." Early attempts to assign work to smaller groups added latency in coordinating those groups, and if one group failed, the broader network could struggle to recover.
Buterin believes mathematical proofs offer a way around this problem. After completing a task, a computer can provide proof of compliance with the rules, letting others verify its answer without repeating the entire computation. Computers could then handle different tasks simultaneously, bringing Ethereum more capacity and more independent verification.
For problems involving ordering, such as which of two payments using the same funds came first, Ethereum still needs to resolve them. Buterin suggested that more of the work behind these payments could be done in advance, and merging proofs could reduce the information recorded on the blockchain.
On privacy, Buterin's plan also covers information people leak simply by using a wallet. Checking a balance usually involves querying an external server about an address, and its operator can learn which accounts a person is watching, even if the payment itself is private. Buterin envisions hiding these requests together with payment details and the rules governing account spending approvals. Businesses could then keep payments confidential without exposing their accounts when employees check balances.
Other cryptocurrency developers are pursuing similar goals. Zcash already lets users send payments using encrypted addresses and amounts. According to a previous analysis of ZecStats data, about 4.9 million ZEC was held in its shielded pool on Friday, and the token traded near $1,660 on Sunday after gaining about 15%. Researchers of a "Shielded Bitcoin" paper published Thursday proposed borrowing Zcash's payment design for Bitcoin, with its specification leaving the actual Bitcoin deposit and withdrawal mechanism for separate study.
Ethereum's own plan still requires substantial engineering work. Generating proofs must be efficient enough for widespread use. Computers handling different tasks must also coordinate updates to the same balances and application records without interfering with each other. Buterin's 2030 comparison still lists cost and privacy limitations for complex applications, and envisions payments reaching finality—when the network treats them as irreversible—in roughly 8 to 32 seconds.
He expects next year's planned Hegotá upgrade to be Ethereum's last "normal" fork, built with technology familiar to those working on the network in 2015. Subsequent upgrades will increasingly rely on mathematical proofs, tools for checking software errors, and security designs meant to withstand future quantum computers.
Buterin wrote: "Starting after Hegotá, this transition will become Ethereum's main story." The end result: "Highly secure computation that is cheaper, more scalable, and more private than anything achievable using only the technology of the previous era." "The cryptographic world computer."
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