ZEC up 12% as Ironwood proof nears completion

The price of Zcash's native token, ZEC, surged more than 12% on Tuesday, July 7, 2026, briefly pushing it above $500 for the first time since early June. The rally followed an announcement from founder Zooko Wilcox that developers are nearing completion of a mathematical proof designed to eliminate a critical security vulnerability in the cryptocurrency's privacy system.

The announcement concerns Project Tachyon's formal verification work on the upcoming Ironwood shielded pool. Wilcox stated the project is on the verge of producing a machine-checkable proof that Ironwood's cryptographic circuits are free from the class of undetectable counterfeiting bugs that plagued its predecessor, the Orchard pool. The discovery of a flaw in Orchard in May 2026 triggered a severe loss of confidence, causing ZEC's price to drop more than 40% in two days. While that vulnerability was promptly patched and developers believe it was never exploited, Zcash's privacy model-which uses zero-knowledge proofs to conceal transaction details-made it impossible to cryptographically prove that no counterfeit coins had been created.

The Ironwood upgrade, proposed on June 6, 2026, is a ground-up response to...