#nu6.3

The post Zcash Locks Ironwood Upgrade for July 28 at Block Height 3,428,143 appeared on BitcoinEthereumNews.com. Zcash News Zcash core developers have locked the activation height for the Ironwood network upgrade, scheduling it to go live on the mainnet on July 28 at roughly 8:00 AM EST. On-chain data confirms the upgrade will trigger at block height 3,428,143, the point at which the NU6.3 consensus rules take effect. Core developer Sean Bowe stated that all major organizations across the ecosystem have committed to activation at that height. The decision finalizes a timeline first outlined in June and stands as one of the most consequential protocol changes for the privacy-focused Zcash network this year. Zcash (ZEC) remains a leading privacy altcoin, and Ironwood directly targets a flaw surfaced earlier in 2026. At the heart of Ironwood is a structural change to how shielded funds are stored. The upgrade closes the existing Orchard pool, the network’s main private transaction pool, b

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.