I found two so far:
IRIS and The Department of Defense nuclear monitoring seismograph in that Tennesee cavern.
I understand there are more.
Ok, that’s a good start. I’m inclined to accept the seismic reporting as accurate.
We can’t take at face value any reports from the news media without getting some degree of confirmation. Fortunately, there are people worldwide that are chasing down every report of importance and confirming or dismissing them. There’s a shadow media that is emerging and getting stronger.