Zcash completes NU6.2 emergency hard fork on June 3, 2026 and targets late-July Ironwood activation
AI Market Summary
Zcash executed an emergency NU6.2 hard fork to fix an Orchard zk-proof soundness flaw and restore shielded transactions, after which several exchanges temporarily halted ZEC flows. The proposed Ironwood upgrade targets late-July activation and would add a "turnstile" migration into a fixed Orchard pool to enable independent circulating-supply verification without de-privatizing users. Near-term market impact hinges on test results and wallet/exchange coordination.
Impact level
● High
Affected assets
ZEC/USDT+2.36%
AI Insight · ZEC/USDTAI Insight
● Neutral
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Zcash completed an NU6.2 emergency hard fork on June 3, 2026 to fix a soundness bug in the Orchard zero-knowledge circuit and restore shielded transactions. On June 6, developers proposed the Ironwood upgrade, targeting activation in late July, using a “turnstile migration” to create a fixed Orchard shielded pool that would allow independent verification of circulating supply. Several exchanges temporarily suspended ZEC deposits and withdrawals during the upgrade window, while the token fell as much as 40% before rebounding about 45%. The rollout is now in testing and ecosystem coordination, with progress by wallets, nodes and exchanges expected to shape the outcome.
