Bearish bets on privacy-focused Zcash (ZEC) climbed to a record high Thursday as the token slumped as much as 50% in 24 hours following disclosure of a now-patched vulnerability in its Orchard privacy pool. The sharp decline triggered approximately $118 million in forced liquidations, yet market structure suggests the selling was predominantly spot-driven rather than a leverage-induced cascade, according to CoinGlass data.

Market Context

The broader crypto market experienced relatively modest moves during the same window, with bitcoin (BTC) falling only a few percent while recording approximately $335 million in futures liquidations. Ether saw similar percentage losses and faced $278 million in liquidations despite maintaining more stable open interest metrics. This divergence highlights how Zcash's specific technical vulnerability created outsized price action compared to general market conditions.

Analysis

The catalyst stems from nonprofit developer Shielded Labs revealing a critical flaw in Zcash's Orchard privacy pool that, if exploited, could have allowed an attacker to create undetectable counterfeit ZEC. The vulnerability remained undetected since the pool launched in May 2022—four years—before security engineer Taylor Hornby discovered it using Anthropic's Opus 4.8 model. Shielded Labs patched the issue in an emergency fix by June 1.

What makes this situation particularly toxic for sentiment is the cryptographic uncertainty surrounding potential exploitation prior to patching. Shielded Labs acknowledged there is no way to prove whether anyone exploited the flaw before remediation. The firm said it probably wasn't exploited but cannot confirm, leaving fundamental uncertainty over ZEC's entire token supply.

Open interest in ZEC futures climbed to a record high measured in token terms as traders crowded into the decline from the short side. This suggests aggressive new position-building rather than mass capitulation. Arthur Hayes, chief investment officer at Maelstrom, publicly stated he sold his entire zcash position as a result of the disclosure.

The liquidations being relatively small for such an extreme price move—only about 14% of leveraged positions were wiped out—reinforces that spot holders initiated most selling rather than overleveraged traders getting forced out. In a true leverage cascade, liquidation volumes would have been substantially higher given ZEC's 50% single-day decline.

Key Numbers

- ~$118 million in Zcash futures liquidations over the 24-hour period (CoinGlass data)

- ~14% of zcash leveraged positions liquidated—modest relative to price move magnitude

- $335 million in bitcoin futures liquidated during same window despite smaller percentage drop

- $278 million in ether futures liquidated during same period

- ZEC down approximately 50% in 24 hours, more than 50% over two weeks

- Long/short ratio on Binance: retail 0.77, whale accounts 0.80, whale positions 0.85

- Long/short ratio on OKX: retail 0.67, whale accounts 0.72

- Bybit retail long/short ratio at 1.49—the sole exchange with net-long retail positioning

- ZEC still up approximately 490% over the past year despite recent collapse