Vitalik Buterin: Ethereum Solves the Blockchain Trilemma
Ethereum’s Blockchain Trilemma ‘Solved,’ Vitalik Buterin Says, Citing ZK Progress and Fusaka Upgrade
Ethereum co-founder Vitalik Buterin said the network’s long-running “blockchain trilemma” has effectively been solved, pointing to two recent technical developments: the steady progress of zero-knowledge virtual machines and the December Fusaka upgrade, which introduced peer data availability sampling.
Buterin framed the changes as addressing Ethereum’s scalability constraints by combining more advanced zero-knowledge execution technology—often discussed in the context of ZK-EVMs—with new approaches to handling and verifying data. In his view, these pieces together resolve key limitations that have historically made it difficult for blockchains to simultaneously scale while maintaining other core properties.
The “blockchain trilemma” is commonly used to describe the tension between scalability and other foundational goals in blockchain design. Ethereum’s roadmap has increasingly relied on cryptographic proofs and improved data systems to push throughput and reduce bottlenecks without relying on a single central operator.
Still, Buterin cautioned that realizing the full benefits will take time. While he highlighted the technological progress, he added that it will take years for Ethereum to fully take advantage of these developments.
- Zero-knowledge virtual machines (ZK-VMs/ZK-EVM direction): ongoing progress toward proving computation with zero-knowledge techniques, enabling more efficient verification of execution.
- Fusaka upgrade (December): introduced peer data availability sampling, a method aimed at improving how the network handles and checks data availability.
