Vitalik Buterin Backs Keyed Nonces as New Ethereum State-Scaling Strategy

Vitalik Buterin said keyed nonces could become a new state-scaling strategy for Ethereum, arguing that the approach can support privacy-preserving transactions at extreme scale while preserving decentralization. In the EIP-8250 proposal, keyed nonces would replace a single sender nonce with a pair of values, nonce_key and nonce_seq, creating independent replay domains for frame transactions and allowing concurrent withdrawals from a shared sender in privacy protocols.

Buterin said the design could create more specialized storage for use cases such as in-protocol nullifiers. He estimated that 2,000 privacy-preserving transactions per second over eight years would leave about 500 billion nullifiers onchain, and said storing them in a dedicated nullifier store would be easier to decentralize than expanding Ethereum’s current state, which he said could otherwise force builders to download as much as 16 terabytes to remain viable.