Ethereum co-founder Vitalik Buterin has announced the launch of Kohaku, a new privacy and compliance solution for the Ethereum network. Kohaku leverages zero-knowledge proofs and elliptic curve cryptography to enhance user privacy by enabling the receipt of funds through one-time stealth addresses. This innovative approach ensures privacy while also allowing for compliance, as it includes optional zero-knowledge proofs for institutional transactions, distinguishing it from previous solutions like Tornado and Railgun.