Ethereum launches Kohaku in boldest privacy push yet
Ethereum announced Kohaku on Nov 17, 2025, calling it the network’s most significant privacy push so far. The initiative bundles protocol-level privacy enhancements aimed at giving users greater confidentiality for transactions and DeFi interactions while keeping smart-contract composability intact. The team presents Kohaku as infrastructure to support private payments, more discreet DeFi activity, and improved wallet privacy without fragmenting the ecosystem.
Kohaku’s launch matters because it changes the trade-offs between transparency and user confidentiality on a platform known for public ledgers. Developers and wallet providers will likely need to update integrations, and regulators may scrutinize private primitives more closely. For ETH holders and builders, Kohaku signals continued protocol evolution that could expand real-world use cases — adoption will hinge on implementation details, tooling, and how the broader ecosystem and regulators respond.