WuBlockchain
Zcash's network stopped producing blocks for more than four hours on June 3, 2026, with the latest confirmed block height sitting at 3,364,601 — timestamped roughly four hours before the explorer page was queried. Several preceding blocks clustered around the same window, confirming the stall was not a one-block anomaly.
Why it matters
The halt was not a clean outage. X user Railgoon explained that Zcash miners and developers made a deliberate decision to freeze the Orchard shielded pool — which holds approximately 30% of all ZEC — to contain a bug before a patch could be deployed. A hard fork followed. Railgoon described the network as "partially intentionally down," a framing that separates this event from a typical exploit or consensus failure. Helius CEO Mert echoed that the network was not simply "down" in the conventional sense, though the practical effect for users was the same: no new blocks, no confirmed transactions.
Market impact
For ZEC holders the distinction between a deliberate freeze and an uncontrolled halt matters less than the outcome: 30% of the coin supply was locked in a pool that developers had to surgically isolate to prevent exploitation. The Orchard pool is Zcash's flagship privacy layer, so any vulnerability there strikes at the protocol's core value proposition. Cake Wallet and Zodl Wallet were among the wallets reported out of sync during the event. The network has since recovered, but the episode will sharpen scrutiny on Zcash's upgrade cadence and the resilience of its shielded infrastructure.
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