The price of Zcash (ZEC) plummeted by 50% in a single day after a critical flaw was discovered in the cryptocurrency's privacy pool. The sell-off accelerated when BitMEX co-founder Arthur Hayes confirmed he had exited his entire Zcash position.
The privacy pool vulnerability
Zcash's shielded pool, the core technology that allows users to transact anonymously, was found to contain a design weakness that could potentially leak transaction metadata. While the exact technical details remain under investigation by the Zcash Foundation, the disclosure prompted a sudden loss of confidence among holders. Privacy is Zcash's primary selling point — the flaw strikes at the reason most users buy the coin.
Hayes’ exit
Arthur Hayes, a prominent figure in cryptocurrency trading and co-founder of BitMEX, publicly stated that he had sold all of his Zcash holdings. Hayes did not provide a specific reason for the sale beyond the privacy pool issue, but his move added weight to the already bearish sentiment. Traders track Hayes’ portfolio moves closely; his exit likely accelerated the decline.
Market reaction and fallout
The sell-off wiped roughly half of Zcash’s market value in hours. Trading volumes surged as panicked sellers dumped tokens, while buyers stepped in only hesitantly. The Zcash team has not yet released a patch or a detailed timeline for a fix. Some investors argue the flaw is fixable and that the sell-off is an overreaction, but others question whether trust in the privacy pool can be fully restored. The wider cryptocurrency market was largely unaffected, with the sell-off isolated to ZEC.
What happens next depends on whether the Zcash developers can prove the flaw is patched and convince the market that privacy remains intact. No date has been set for a fix.
