# Coinbase Base blockchain resumes after two‑hour outage

**Published:** 2026-06-27T15:34:42.294Z  
**Topic:** Coinbase  
**Sentiment:** neutral  
**Publisher:** TrendWatcher — https://www.trendwatcher.in/article/c3f1614c-764f-42fb-beb1-e36a42e831cb

Base network halted for about two hours on June 25 2026 due to an invalid block, resuming block production and prompting node restarts.

Coinbase’s Ethereum layer‑2 network Base returned to normal operation on Thursday after a roughly two‑hour outage that stopped block production and transaction processing. The disruption, traced to an “invalid block,” underscores the fragility of one of Ethereum’s biggest scaling solutions and follows a shorter 29‑minute downtime in August 2025.

| At a glance | |
|---|---|
| Outage length | ~2 hours |
| Block production | Resumed (nodes syncing) |
| First sign of trouble | 16:03 UTC (unhealthy block production) |
| Prior outage | August 2025, 29 minutes |

## Incident timeline
Base’s status page flagged “unhealthy” block production at 16:03 UTC, prompting the first public indication of trouble. By 16:52 UTC the team identified an invalid block as the trigger and began multiple remediation steps, including advising ecosystem node operators to restart their nodes. Internal nodes were reported as syncing correctly once the issue was resolved, and block production resumed shortly thereafter [1].

## Context and implications
The outage marks the second known disruption for Base since its launch, the earlier incident in August 2025 lasting 29 minutes [1]. While the recent event was longer, both incidents were tied to consensus‑related faults rather than external attacks. Base remains one of Ethereum’s largest layer‑2 networks, handling a significant share of on‑chain activity; any halt therefore impacts a broad set of dApps and users. The cause—an invalid block—has not been fully disclosed, leaving open the question of whether a software bug or a deeper protocol issue was involved.

## What to watch
- **Node synchronization** – Monitor Base status updates for any further sync delays among validator nodes.  
- **Root‑cause investigation** – Follow Coinbase’s forthcoming technical report for details on the invalid block and any planned software patches.  
- **Future outage risk** – Compare any upcoming incident duration against the two‑hour benchmark to gauge resilience improvements.

The outage highlights the operational risks inherent in fast‑growing layer‑2 solutions and raises questions about Base’s long‑term reliability as it scales. Continued transparency on the root cause will be key to restoring confidence among developers and users.

## Sources
1. CoinDesk — [Coinbase (COIN) news: Base blockchain resumes after two-hour...](https://www.coindesk.com/tech/2026/06/25/coinbase-s-base-blockchain-resumes-after-two-hour-outage-disrupted-network)
2. Live Bitcoin News — [Coinbase Unveils AI-Powered Finance and Tokenized Stocks Plans](https://www.livebitcoinnews.com/coinbase-unveils-ai-powered-finance-and-tokenized-stocks-plans/)

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Cite as: TrendWatcher, "Coinbase Base blockchain resumes after two‑hour outage", https://www.trendwatcher.in/article/c3f1614c-764f-42fb-beb1-e36a42e831cb