Zcash (ZEC) has surged nearly 40% over the past week, defying a broader cryptocurrency market sell-off. The privacy-focused cryptocurrency's rally was sparked by a meeting between Arthur Hayes and Naval Ravikant, leading to increased interest and celebrity endorsements. Key factors driving the surge include Zcash's transition to a hybrid proof-of-stake model and heightened demand for privacy-centric assets amid discussions of a potential digital euro.