📌 Zcash sets July 28 hard fork to seal Orchard after critical bug ⚠️ Zcash founder Zooko Wilcox has explained how the network’s July 28 Ironwood hard fork will address uncertainty around a critical flaw in the Orchard shielded pool. The upgrade will not identify or freeze individual counterfeit coins. Instead, it will seal the old pool and limit how much ZEC can leave. 🔖 Ironwood, also known as NU6.3, is scheduled to activate at block 3,428,143 on July 28. The upgrade will retire the current Orchard pool and introduce a new shielded pool based on the corrected circuit. According to Zcash’s official Ironwood user update, users will no longer be able to send or receive ZEC inside the old Orchard pool after activation. Funds can leave only through the turnstile, which prevents more ZEC from exiting than legitimately entered. ⭐️ The Zcash team said it believes the flaw was “unlikely to have been exploited,” but users cannot independently prove no counterfeit ZEC was created. Ironwood aims to trap any excess value inside the old pool rather than allow it to enter wider circulation. Security researcher Taylor Hornby discovered the Orchard flaw on May 29 while auditing the shielded system. The bug could have allowed an attacker to create counterfeit ZEC inside Orchard without leaving an obvious public record.
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📌 Zcash sets July 28 hard fork to seal Orchard after critical bug
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