The Zcash development team has confirmed the activation of the long-awaited Ironwood network update, scheduled for July 28 at approximately 8:00 AM Eastern Time. The upgrade will take effect upon reaching block #3,428,143 and represents a critically important step for ensuring network security.
The key feature of Ironwood is the forced closure of the current private Orchard pool and the creation of a completely new shielded pool. This decision is directly related to a vulnerability discovered in the Orchard protocol back in May. Theoretically, this bug could have allowed attackers to mint counterfeit ZEC, threatening the entire economic model of the network.
Notably, during the process of withdrawing funds from the old pool, users will undergo a mandatory accounting check. This is not just a technical procedure — it will allow detection of whether the bug was exploited before its fix. In other words, Ironwood not only patches the hole but also provides an opportunity to conduct a retrospective audit of potential abuses.
From my professional perspective, this update is an exemplary case of responsible management of a cryptocurrency project. Instead of sweeping the problem under the rug or introducing temporary fixes, the Zcash team opted for a radical but necessary action — a complete replacement of the shielded pool. This increases trust in the network but requires vigilance from users: all ZEC holders using private transactions need to promptly move their funds before Ironwood activates to avoid losing access to assets in the old pool.