The proposed approach aims to support privacy-preserving transactions at very large scale while maintaining Ethereum’s decentralization, according to the source.
Ethereum co-founder Vitalik Buterin has backed keyed nonces, described in the source as a new scaling strategy for Ethereum. The approach is presented as a way to enable privacy-preserving transactions while operating at extreme scale without sacrificing decentralization, a core design goal for public blockchains. In Ethereum, scaling methods are closely watched because networks must balance throughput, user privacy, and resistance to central control.