Keyed nonces are not just a way to add stronger in-protocol support for privacy solutions. They are also a potential first foray into a new state scaling strategy for Ethereum: create new types of storage that are more optimized for handling categories of use cases that we care about, with restrictions on their use that make them usable at extreme scale while preserving the protocol's decentralization.Let's zoom in on this case (in-protocol nullifiers). Let's say we get to 2000 TPS of privacy-preserving tra ...