TL;DR:
- Buterin published a roadmap with three native privacy upgrades for Ethereum: account abstraction, FOCIL, and keyed nonces.
- The initiatives aim to make censorship of private transactions harder and prevent node providers from centralizing user data.
- Privacy-focused projects like Zcash and Monero have posted gains above 800% and 100% respectively since early 2025.
Native privacy as a feature of Ethereum has not existed until now. Vitalik Buterin, co-founder of the network, published a detailed technical thread outlining three short-term initiatives aimed at incorporating private transactions directly into the protocol, without relying on third-party tools like mixers.
Buterin’s three proposals are account abstraction combined with FOCIL, keyed nonces, and a set of improvements at the access layer. Each one addresses a different dimension of the privacy problem the network faces today.
Short-term things being done to shift Ethereum toward native privacy:
* AA + FOCIL (makes privacy protocol txs, among many other things, first-class with strong inclusion guarantees)
* Keyed nonces: https://t.co/BeTJvFhxiV
* Access-layer work (Kohaku, private reads…) https://t.co/MImWVYXBQv— vitalik.eth (@VitalikButerin) May 20, 2026
Buterin Proposes Tools Against Censorship and Activity Tracking
Currently, a private transaction on Ethereum first passes through the mempool, a public space visible to all users on the network. Block builders can see those transactions and deliberately exclude them. FOCIL, short for fork-choice enforced inclusion lists, counteracts that dynamic, allowing a committee of validators to propose lists of transactions that block builders are required to include. If they ignore them, the block can be rejected by the network.
Account abstraction, for its part, transforms Ethereum accounts into programmable smart contracts. This enables features such as multisig approvals, social recovery, and fee payment by third parties, eliminating dependence on a single private key.
Keyed nonces target another critical point. Today, every account on Ethereum has a sequential transaction counter that allows any observer to link different operations to the same address, even if the content of those transactions is hidden. Buterin’s proposal is to replace that single counter with a nonce_key and nonce_seq structure, generating independent replay domains by activity type and making onchain correlation harder.
Kohaku Toolkit: Hiding Queries
The third initiative incorporates Kohaku, an open-source privacy toolkit introduced in 2025. Its goal is to protect the user’s browsing behavior on the network. Every time a wallet queries balances or reads smart contracts, it relies on RPC node providers that log the IP address, physical location, and full identity of the wallet. Kohaku offers developers private information retrieval tools so that nodes can respond to queries without identifying what specific data the user requested.
None of these modifications are active yet. However, Buterin has delivered a forceful response to the demand for onchain privacy, which already has a market correlate: Zcash has posted gains above 800% since early 2025 and Monero exceeds 100% over the same period.
Native privacy at layer one could give Ethereum real monetary qualities and immediately boost mainnet fees.
