Base blockchain resumes block production after two-hour halt

The Base blockchain, a major Ethereum layer-2 network developed with support from Coinbase, resumed normal operations on Thursday, June 25, 2026, after a nearly two-hour outage that halted block production and disrupted transaction processing. The incident was caused by a consensus failure that sequenced an invalid block, preventing the creation of new blocks.

The network first reported unhealthy block production at 4:03 p.m. UTC. Less than an hour later, the team said it had isolated a consensus problem where an invalid block was sequenced, effectively stopping the chain from progressing. By approximately 6:00 p.m. UTC, Base announced it had recovered healthy block-building and that ecosystem-wide infrastructure was returning to a synced state. The team confirmed that all user funds remained secure throughout the disruption.

Base creator Jesse Pollak stated that while funds were safe, a network halt is unacceptable for a platform aiming to support global, 24/7 finance. The outage temporarily stalled transactions, deposits, and withdrawals, affecting the many decentralized applications, exchanges, and services built on one of Ethereum's most active scaling networks.