Ethereum founder Vitalik Buterin has donated to Shielded Labs, backing development of Crosslink, a proposed consensus upgrade for Zcash. The move signals a deepening commitment by Buterin to privacy-preserving infrastructure, as well as growing interest in strengthening finality and settlement guarantees in proof-of-work blockchains. Vitalik Doubles Down on Privacy Infranstructure in Crypto Shielded Labs is developing Crosslink, a parallel finality layer designed to sit on top of Zcash’s existing proof-of-work consensus. In simple terms, Crosslink adds a second confirmation system that locks in transactions faster and more decisively
source: https://beincrypto.com/vitalik-buterin-zcash-privacy-donation/