Most Ethereum users today interact with the network through a single persistent wallet address, a model that allows anyone to trace every token held, every protocol used, and every transaction made by a given user simply by querying public blockchain data.

Kohaku, an open-source privacy initiative backed by the Ethereum Foundation, is designed to close that gap by giving wallet developers modular tools to implement shielded transaction pools and private query infrastructure into existing wallets without requiring users to navigate separate privacy protocols.

The per- dapp address feature, highlighted by Buterin on May 27 and credited to contributors kassandraETH and ncsgy, takes a direct approach to the metadata leakage problem so that each time a user connects to a new application, the wallet automatically generates a fresh address.

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This breaks the onchain link between a user’s activity on a decentralized exchange ( DEX), a lending protocol, and any other dapp they interact with, making it substantially harder for data aggregators or surveillance infrastructure to build a complete financial profile of a given user.

Kohaku’s endgame is much more ambitious, having already integrated with established Ethereum privacy tools, including Railgun and Privacy Pools, abstracting away their technical complexity so that ordinary users can access shielded transactions through their regular wallets.

The per- dapp address development is one piece of a wider Ethereum privacy roadmap Buterin outlined earlier in 2026. The near-term plan covers three specific initiatives, namely account abstraction combined with FOCIL (Fork-Choice enforced Inclusion Lists), Keyed Nonces (EIP-8250), and Kohaku. The majority of these upgrades are slated for Ethereum’s upcoming Hegotá hard fork, expected in the second half of 2026.

Kohaku’s most recent technical milestone, the release of kohaku-eth/railgun v0.0.1-alpha.21, made ERC-4337 relaying fully operational for Railgun privacy transactions. ERC-4337 is Ethereum’s account abstraction standard, and routing shielded transactions through its mempool reduces reliance on protocol-specific infrastructure that has historically acted as a bottleneck for privacy adoption at scale.

“We’ve accelerated narratives enough. Let’s accelerate the cypherpunk privacy reality.” Buterin wrote earlier this week, with the comment reflecting a broader shift in the Ethereum Foundation’s priorities wherein, after a decade focused primarily on scalability, the network is now pushing to restore the privacy guarantees that were central to its original design.

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