Ethereum co-founder Vitalik Buterin threw his weight behind a new privacy feature from wallet provider Kohaku this week. The tool gives users a unique blockchain address for every decentralized application they interact with. Buterin called per-dapp address isolation 'a really important place to start' for building meaningful onchain privacy.
The single-address problem
Most Ethereum users currently rely on a single address for everything. That means every DeFi trade, every NFT mint, every governance vote is tied to the same public key. Anyone can trace your activity across dapps, link your transactions, and build a profile of your behavior. It's a privacy headache that's been around since day one.
Buterin's endorsement points to a simple fix: decouple your identity from each app. Instead of one address for all, you get a fresh one per dapp. That breaks the chain of surveillance without forcing users to juggle multiple wallets.
What Kohaku's feature does
Kohaku's wallet handles the complexity behind the scenes. When you connect to a new dapp, it assigns a unique blockchain address just for that interaction. The wallet manages the keys so you don't have to think about it. The result is that your Uniswap trades can't be linked to your OpenSea purchases or your Aave deposits.
Buterin didn't release a detailed technical post, but his public signal matters. He's one of the most influential figures in crypto, and when he says a privacy approach is 'a really important place to start,' developers and users tend to pay attention. The comment suggests the Ethereum ecosystem is finally tackling user privacy at the application layer, not just the protocol layer.
Kohaku's feature is live now. The big question is whether other wallet providers will follow. Buterin's nod could speed that up — or at least make the problem harder to ignore.
