Tempo is rolling out a new feature called Zones, a permissioned layer designed to bring bank-style privacy to public blockchain rails. Announced this week with backing from Stripe and Paradigm, Zones allows enterprises to run sensitive transactions inside controlled environments while still tapping publicly liquid assets on Tempo’s network. The move aims to address a long-standing tension in crypto infrastructure: how to keep enterprise data private without sacrificing the openness and liquidity of public blockchains.

However, the design has sparked a debate within the ecosystem. Critics argue that giving an operator visibility into transaction data and the power to suspend transfers introduces centralized trust akin to traditional…