Zcash hasn't produced a block in four hours; the stability of privacy coins still makes people sweat.

CoinWorld News: The privacy-focused Zcash blockchain stopped generating new blocks for more than four hours on Wednesday. This rare and concerning pause caused the entire payment system to appear frozen. According to the Zcash block explorer, the most recently generated block number is 3,364,601, created at 5:27 UTC on June 3. Normally, Zcash generates a new block approximately every 75 seconds. Despite the technical issues, Zcash’s native token ZEC rose 8% over the past week and 46% over the past month.