ZEC has shed around 50% since Thursday, trading near $310 from a high of $630, amid a bug disclosure and a historic liquidation event — with at least $116 million wiped across 19,160 traders, per CoinGlass.Zcash Open Development Lab patched the critical counterfeiting flaw within days of its discovery, but the protocol’s own privacy design makes it cryptographically impossible to prove whether the exploit was used before remediation.