On June 3, 2026, several Zcash block explorers reported no new blocks for over four hours, leading to concerns of a network outage. However, the issue was not with the Zcash blockchain itself but with block explorers that failed to update after a recent network upgrade. Josh Swihart, CEO of ZODL, explained that the upgrade was a hard fork at block 3,364,600, and miners began producing blocks on the new chain, while explorers remained on the old one. Mert Mumtaz, CEO of Helius, confirmed this, noting that explorers were working on updates. The incident highlights the importance of node updates for accurate onchain data. Meanwhile, ZEC token rose 8% over the past week and 46% over the past month, showing resilience amid broader market weakness.

Key facts

• Block explorers showed no new Zcash blocks for over 4 hours on June 3
• Issue caused by explorers not updating after network upgrade hard fork
• CEO Josh Swihart confirmed miners were producing blocks on new chain
• Helius CEO Mert Mumtaz echoed the explanation of explorer lag
• ZEC token rose 8% in past week despite the incident