Grayscale launches Zcash ETF, trading on NYSE Arca following key privacy vulnerability fix

Odaily News - Digital asset manager Grayscale's Zcash ETF began trading on NYSE Arca on Tuesday under the ticker ZCSH. The product is the world's first exchange-traded product offering spot exposure to Zcash, allowing investors to track ZEC prices through securities accounts without needing to directly purchase or store the token.

ZCSH was formerly known as the Grayscale Zcash Trust, established in October 2017 through a private placement. Grayscale filed an application with the U.S. Securities and Exchange Commission in November 2025 to convert the trust into an ETF, with shareholders holding shares that track the fund's ZEC holdings rather than holding ZEC directly.

In May of this year, security researcher Taylor Hornby, using Anthropic's Claude Opus 4.8, discovered a vulnerability in Zcash's Orchard shielded pool that had existed for four years, which could potentially allow attackers to mint counterfeit ZEC. Developers deployed an emergency patch on June 1, but due to privacy mechanisms, it was not possible to cryptographically confirm whether the vulnerability had been exploited.

Zcash activated the Ironwood upgrade in July, replacing Orchard with a new shielded pool and introducing accounting rules that limit the amount of ZEC exiting the old shielded pool to no more than the amount entering. Grayscale stated it will monitor the adoption of the Ironwood upgrade, network security, exchange support, and regulatory conditions for privacy assets. (Decrypt)