Monero also sank 9.2%, while bitcoin and ether posted smaller declines. ZEC traded about 31.5% below a late-September level above $1,600.

ZCSH trades on NYSE Arca and held $675.7 million in assets as of Nov. 9. Its prospectus sets a 2.5% annual sponsor fee.

About 12,224 ZEC remained in the legacy shielded pool ahead of the cutoff. NU7 will also reduce target block spacing from 75 seconds to 25 seconds.

Monero requires privacy mechanisms for ordinary transfers, while Zcash supports transparent and shielded modes. Neither erases an exchange’s identity records.

The upgrade is expected around Nov. 5 and will shorten target block times without materially increasing scheduled daily issuance. Node operators face a software-upgrade deadline.

Onchain records show about 140 RUNE deducted from 18 node accounts. The fix is scheduled for the v3.21 upgrade around Oct. 23.

Winklevoss Capital Fund has indicated interest in buying up to $100 million of shares, but the potential purchase is nonbinding.

The physically backed product trades in Paris and Amsterdam, while a 3:42 p.m. ET chain snapshot put shielded ZEC at 29% of supply.

The Zcash developer said researcher Taylor Hornby used Anthropic's latest AI model to find a flaw that could have minted undetectable counterfeit ZEC inside the Orchard privacy pool. It wants a further network upgrade to prove the supply is sound, beyond the emergency fix activated June 3.

The crypto VC's co-founder said the firm has been buying ZEC since February, and has "built a significant position."