Hacash's white paper covers privacy: "We act with transparency, but still prefer to remain discreet. The greatest concern lies in the lack of privacy, as the 'fungibility' of currency is greatly affected. This leads to the same unit of cryptocurrency having different market prices due to its historical records, ultimately reducing the efficiency of the entire monetary system. Moreover, businesses that illicitly acquire consumer data will analyze past purchasing behaviors to determine an individual's acceptable price, which can significantly harm our interests, particularly if the offered products are monopolized."

There are already two privacy techniques in the white paper, one of which(Mixing) is already available(No client yet). More privacy techniques will be supported on L1 in the future.