Vitalik Buterin Redefines Ethereum With Three Core Roles

TLDR

Vitalik Buterin presented three core functions that redefine Ethereum’s long-term direction.
The proposal describes Ethereum as a global bulletin board for permanent public data.
The PeerDAS upgrade aims to reduce data storage costs on the Ethereum network.
Ether serves as a payment tool to prevent spam and Sybil attacks in open systems.
The network burns security deposits when participants violate established rules.

Vitalik Buterin outlined a revised framework for Ethereum in a post published today on X. He described three core functions that define Ether’s long-term purpose. He framed Ethereum as “the global shared memory of the world” and urged a shift away from marketing noise.
Vitalik Buterin Sets Out Ethereum’s Three Core Functions
Vitalik Buterin said Ethereum should function as a global bulletin board for open protocols. He explained that many cryptographic systems require a public place where users can write data permanently. He stated that older blockchain models made such storage expensive and limited. However, he said the PeerDAS upgrade allows Ethereum to store large data volumes at low cost.
He clarified that Ethereum does not need to compute every task directly on the chain. Instead, he said the network must guarantee that data remains available and cannot be deleted. He described this function as essential for open cryptographic coordination. Therefore, he positioned Ethereum as infrastructure for public data integrity rather than heavy computation.

I was recently at Real World Crypto (that’s crypto as in cryptography) and the associated side events, and one thing that struck me was that it was a clarifying experience in terms of understanding *what blockchains are for*.
We blockchain people (myself included) often have a…
— vitalik.eth (@VitalikButerin) March 12, 2026

Buterin then addressed spam prevention within permissionless systems. He argued that fully open platforms cannot ban users outright without undermining decentralization. As a result, he said every action must carry a small financial cost. He described Ether as a universal payment tool for APIs, spam resistance, and security deposits.
He added that the network burns deposits when users break established rules. This mechanism, he said, discourages Sybil attacks and system abuse. Consequently, Ether gains utility beyond speculation or trading. He framed transaction costs as necessary friction that protects open systems.
Ethereum’s Smart Contracts and the Role of Zero Knowledge
Buterin also described smart contracts as tools for convenience and coordination. He stated that users can compute most processes locally on their own devices. Then, they can submit results to Ethereum using zero-knowledge proofs. He explained that this approach reduces on-chain computation while preserving verification.
He emphasized that smart contracts provide a shared standard environment. According to him, this standard lets different programs interact within one ecosystem. He said this structure simplifies digital asset management and protocol communication. Therefore, Ethereum acts as a common platform for decentralized applications.
In his post, Buterin summarized Ethereum as shared global memory. He wrote that Ether supports privacy and censorship resistance in modern systems. He stressed that the asset now underpins a broader technology stack. He shared these points on X earlier today without outlining a specific timeline.
The post Vitalik Buterin Redefines Ethereum With Three Core Roles appeared first on Blockonomi.