Thomas Thiery, Toni Wahrstätter, Lightclient, and Vitalik Buterin introduced EIP-8250, a proposal to replace the single sender nonce used in frame transactions with a keyed nonce system. Under EIP-8250, each key selects an independent nonce sequence, so transactions using different keys are completely replay-independent.

The new system is particularly beneficial for privacy protocols, which route many independent users through a single shared sender address. Frame transactions currently consume one linear nonce per sender. If one transaction is delayed, every subsequent transaction from the same sender is invalidated.

Vitalik has also framed keyed nonces as a first step toward a broader state scaling strategy: creating specialized, restricted forms of storage on Ethereum that can scale to hundreds of billions of entries while remaining more manageable for decentralized node operators. EIP-8250 is targeted for inclusion in the Hegota upgrade.

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