Zcash is a higher-risk store of value because bugs in its proof system have made undetectable counterfeiting possible. Those bugs have been exploited twice, and nobody can verify whether counterfeit ZEC was created. Litecoin's MWEB privacy layer had a validation bug exploited to mint 85,000 counterfeit LTC, showing privacy-focused monetary systems can introduce real security and supply risks. Their privacy can still make them useful for moving funds quickly and privately. x.comÂ