Bloodborne’s online capabilities have been taken down due to “emergency maintenance”. This was confirmed by the official Japanese account for the game, in a post saying:
“Currently, we have implemented emergency server maintenance.
Server maintenance is complete plans within a few days. Upon completion, we’ll give you guidance.
We apologize that we have the inconvenience to everyone.
We are currently conducting emergency maintenance on the game servers. The maintenance should be complete within a few days. We will update you again once the maintenance ends.
We apologize for the inconvenience, and thank you for playing Bloodborne.”
It is unclear at this time what was the cause of the problem that initiated the maintenance, but will keep atop the situation and report more when more is revealed.