Zcash (ZEC) plunges after Orchard Pool bug prompts Hayes exit
Arthur Hayes, CIO of Maelstrom, said he sold his entire Zcash (ZEC) position after Shielded Labs disclosed a potential critical vulnerability in Zcash’s Orchard Pool.
The issue, reportedly present since 2022 and fixed on June 1, could have enabled unlimited minting of ZEC, breaking assumptions about the network’s supply integrity. Hayes said it was “extremely unlikely” exploitation would occur, but he could not prove minting was cryptographically impossible—so the risk forced him to take profit following a sharp sell-off.
ZEC fell more than 40% after the disclosure and was recently down about 42% over 24 hours. Arkham also noted a large investor reportedly lost over half the value of a roughly $174 million ZEC stash.
Hayes said he would reassess his stance and could buy back ZEC if his concerns prove unfounded, potentially at lower prices. In the meantime, the event adds to market uncertainty around privacy coins and token supply assumptions.
Main trading takeaway: Zcash (ZEC) is trading as a high-volatility “headline risk” asset, with downside momentum likely until credibility and audits fully stabilize sentiment.
Bearish
This is bearish for Zcash because the market is reacting to a supply-integrity narrative shock. Even though the vulnerability was reportedly fixed (June 1) and Hayes judged exploitation “extremely unlikely,” the inability to cryptographically rule out unlimited minting undermines confidence. Similar post-disclosure events in crypto—especially when token supply assumptions are questioned—tend to trigger rapid de-risking, widen spreads, and keep volatility elevated until independent verification and audits restore credibility.
Short term, the immediate price action (ZEC down ~40%+ within 24 hours) and Hayes’ liquidation signal can amplify momentum traders’ sell decisions and encourage further liquidity pullbacks. Large-holder losses (Arkham’s note) also reinforce the “headline risk” framing.
Longer term, if follow-up audits and the community confirm there was no exploitable path or that minting could not occur in practice, ZEC could stabilize and potentially mean-revert—especially since Hayes left the door open to repurchase. But until the market regains supply-confidence, privacy-coin sentiment is likely to remain fragile, keeping a bearish bias.