Last night, the Bitcoin network split in two at block height 941880: AntPool and ViaBTC occupied one chain, while Foundry USA opened its own separate chain, and the two sides remained deadlocked for a full block cycle.

Ultimately, Foundry USA mined blocks 883, 884, and 885 in succession, winning decisively based on the "longest chain" principle—all of AntPool and ViaBTC's blocks became invalid and became orphan blocks.

This is neither an attack nor a malfunction, but simply a rare practical exercise of the Bitcoin consensus mechanism.