Vitalik Buterin Backs Kohaku Wallet Feature That Gives Ethereum Users a New Address Per Dapp

Why Single Addresses Are a Privacy Problem

Most Ethereum users contiguous interact with the web done a azygous persistent wallet address, a exemplary that allows anyone to hint each token held, each protocol used, and each transaction made by a fixed idiosyncratic simply by querying nationalist blockchain data.

Kohaku, an open-source privateness inaugural backed by the Ethereum Foundation, is designed to adjacent that spread by giving wallet developers modular tools to instrumentality shielded transaction pools and backstage query infrastructure into existing wallets without requiring users to navigate abstracted privateness protocols.

The per- dapp code feature, highlighted by Buterin connected May 27 and credited to contributors kassandraETH and ncsgy, takes a nonstop attack to the metadata leakage occupation truthful that each clip a idiosyncratic connects to a caller application, the wallet automatically generates a caller address.

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This breaks the onchain nexus betwixt a user’s enactment connected a decentralized exchange ( DEX), a lending protocol, and immoderate different dapp they interact with, making it substantially harder for information aggregators oregon surveillance infrastructure to physique a implicit fiscal illustration of a fixed user.

Kohaku’s endgame is overmuch much ambitious, having already integrated with established Ethereum privateness tools, including Railgun and Privacy Pools, abstracting distant their method complexity truthful that mean users tin entree shielded transactions done their regular wallets.

Part of a Broader Ethereum Privacy Push successful 2026

The per- dapp code improvement is 1 portion of a wider Ethereum privateness roadmap Buterin outlined earlier successful 2026. The near-term program covers 3 circumstantial initiatives, namely relationship abstraction combined with FOCIL (Fork-Choice enforced Inclusion Lists), Keyed Nonces (EIP-8250), and Kohaku. The bulk of these upgrades are slated for Ethereum’s upcoming Hegotá hard fork, expected successful the 2nd fractional of 2026.

Kohaku’s astir caller method milestone, the merchandise of kohaku-eth/railgun v0.0.1-alpha.21, made ERC-4337 relaying afloat operational for Railgun privateness transactions. ERC-4337 is Ethereum’s relationship abstraction standard, and routing shielded transactions done its mempool reduces reliance connected protocol-specific infrastructure that has historically acted arsenic a bottleneck for privateness adoption astatine scale.

“We’ve accelerated narratives enough. Let’s accelerate the cypherpunk privateness reality.” Buterin wrote earlier this week, with the remark reflecting a broader displacement successful the Ethereum Foundation’s priorities wherein, aft a decennary focused chiefly connected scalability, the web is present pushing to reconstruct the privateness guarantees that were cardinal to its archetypal design.