Loading article…
Base, Coinbase’s Ethereum layer‑2, halted block production for ~2 hours on June 25 due to a consensus fault. Network back online, pending txs clearing – see
Base’s mainnet returned to normal block production after a roughly two‑hour consensus‑related outage that began at 16:03 UTC on June 25, 2026, halting transaction confirmations across the network [1]. The incident underscores reliability challenges for rapidly scaling layer‑2 solutions, especially as Base expands its ecosystem of dApps.
| At a glance | |
|---|---|
| Outage start | 16:03 UTC, June 25 2026 |
| Duration | ~2 hours (until ~18:00 UTC) |
| Block halted at | 47,806,542 |
| Cause | Consensus fault triggering an invalid block [1] |
Base validators stopped producing new blocks after an invalid block was sequenced, which the development team classified as a “consensus fault” rather than an external attack [1]. The issue was first reported on the network’s status page as “unhealthy” block production, and by 16:52 UTC the team had identified the problem and begun remediation [2]. A corrective update was deployed, restoring consensus and allowing the network to resume normal block generation.
During the outage, users could still submit transactions, but they remained pending because no new blocks were being finalized [1]. Decentralized applications built on Base experienced delayed confirmations, creating a backlog that was gradually cleared once block production resumed [1]. The incident follows a 33‑minute outage in August 2025, prompting Base to introduce infrastructure upgrades and additional testing aimed at bolstering reliability [1].
The outage highlights the importance of robust consensus mechanisms for layer‑2 networks that handle growing on‑chain activity. As Base continues to attract developers and users, its ability to maintain uninterrupted block production will be a litmus test for the resilience of Coinbase’s broader blockchain strategy.
Coverage is mostly measured — 67 of 78 reports stay neutral.
Every Monday — the token unlocks, Fed dates & catalysts set to move crypto and markets this week. So you’re never blindsided.
Free · 3-min read · one-click unsubscribe
AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 2 outlets · Jun 26, 2026 · How we report
Ark Invest purchased 9,014 Coinbase shares across its ARKK, ARKW and ARKF ETFs, valued at roughly $1.28 million based on the closing price.
The outage was triggered by an invalid block that entered sequencing, causing a consensus issue that halted block production for about two hours.
Base’s creator Jesse Pollak said user funds remained safe throughout the interruption.