Coinbase's Base Recovers After Two-hour Block Production Halt

WHO:

99 Bitcoins - Coinbase is the organization involved in the incident.

WHAT:

99 Bitcoins - A consensus failure caused by a single invalid block resulted in a two-hour downtime for Coinbase's blockchain, Base.

Cointelegraph - The network was knocked offline for around two hours before resuming block production.

WHERE:

99 Bitcoins - The incident occurred on Coinbase's blockchain, Base.

WHEN:

Cointelegraph - The outage occurred on a Thursday.

WHY:

99 Bitcoins - The downtime was triggered by a consensus problem related to an invalid block.

HOW:

99 Bitcoins - The issue raised questions about the reliability of Layer 2 solutions and the design of centralized sequencers.

(UPDATED June 26, 2026 13:39 UTC)

A significant outage occurred on Coinbase's blockchain, Base, due to a consensus failure triggered by a single invalid block, resulting in approximately two hours of downtime. During this period, the network was completely offline before it resumed block production. This incident has raised concerns regarding the reliability of Layer 2 solutions and the design of centralized sequencers.