Zcash Ironwood Upgrade: Security Fix and Market Impact
The post Zcash Ironwood Upgrade: Security Fix and Market Impact appeared on BitcoinEthereumNews.com. Zcash is moving fast to close a critical chapter in its security history. The Zcash Ironwood upgrade — formally known as NU6.3 — has been locked in for July 28 activation, with core developer Sean Bowe confirming the network will flip at block height 3,428,143, expected around 8 a.m. EST. The confirmation comes after weeks of technical scrambling following the discovery of a serious flaw in the network’s primary privacy layer. Key takeaways The Ironwood upgrade activates on July 28, 2026 at block height 3,428,143 — one week later than initially planned. Ironwood replaces the Orchard shielded pool after an “infinity” bug was found that could theoretically allow unlimited counterfeit ZEC creation. Funds exiting Orchard must pass through an accounting checkpoint, which acts as a forensic filter for any fake coins. No evidence exists that the bug was ever exploited to mint counterfeit ZEC.