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22h ago

Polygon Restores Network Sync After Heimdall Hotfix Bug

An emergency patch restored Heimdall consensus after a hotfix glitch triggered node desynchronization, with partners now resolving remaining sync issues.

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Overview

  • A July 30 hotfix to Heimdall v0.2.16 caused a rare validator exit that halted checkpointing and left RPC nodes out of sync for about an hour.
  • The Bor execution layer remained fully operational throughout, continuing to produce blocks and process transactions without interruption.
  • Polygon engineers identified the consensus bug within five minutes of logging the incident at 09:52 UTC and deployed a fix by 11:01 UTC.
  • Major RPC providers such as QuickNode paused the Heimdall upgrade rollout and resynced nodes over the afternoon to clear stale data.
  • The Polygon Foundation is collaborating with infrastructure partners to ensure full network visibility and prevent any residual synchronization inconsistencies.