Coinbase-backed layer-2 Base returned to normal after a nearly two-hour halt to block production Thursday, after engineers identified and patched a consensus issue that sequenced an invalid block.
Base first flagged “unhealthy block production” on its status page at 4:03 p.m. UTC and said sequencing stopped after block 47,806,542. The team later confirmed blocks were being produced normally and that it had verified broad recovery across the ecosystem. Operators with stuck nodes were instructed to restart and resync; Base’s internal nodes had already resumed syncing.
Founder Jesse Pollak moved quickly to reassure users, saying in a post on X that “funds are safe” while also acknowledging that “a halt is not okay” for a network aiming to support global, 24/7 finance. The team said it has identified and patched the root cause and will publish a full post‑mortem explaining how the invalid block entered sequencing, why the chain stopped, and what checks will change.
Why this matters
- A block-production pause freezes on‑chain activity: trades, payments, dApps, wallets, exchanges and bridges that rely on fresh blocks can be delayed or disrupted. For a busy scaling network like Base, outages are rare but high-impact.
- The incident comes just ahead of Base’s Beryl upgrade, which went live after the network recovered. Beryl reduces the standard Base‑to‑Ethereum withdrawal delay from seven days to five and introduces a native B20 token standard (targeted at stablecoins and real‑world asset tokens) built into Base’s node software rather than only via smart contracts.
- Reliability is especially important as Base expands beyond retail crypto trading into broader Coinbase product plans — and as institutions lean on the network. For example, JPMorgan has piloted JPM Coin on Base for faster, always-on settlement.
Context and history
Base previously suffered a 33‑minute outage in August 2025 caused by a sequencer handoff problem; that incident led to infrastructure changes and extra testing. The new halt is likely to re‑ignite scrutiny of sequencer design and uptime guarantees, and whether additional safeguards are needed as Base grows.
What’s next
Base has said it will publish a full post‑mortem. Builders and users will be watching for a clear explanation, concrete fixes, and steps that reduce the risk of future halts — especially given the network’s increasing role in institutional payments and Coinbase’s broader ambitions. For now, block production has resumed, but the incident underscores that even major networks can be tripped up by edge‑case failures.
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