Further info:

Search for "Terrahash" business registration here under corporation category

http://kepler.sos.ca.gov/

Entity Name:   TERRAHASH, INC.
Entity Number:   C3566232
Date Filed:   05/14/2013
Status:   ACTIVE
Jurisdiction:   CALIFORNIA
Entity Address:   366 S MARY AVE
Entity City, State, Zip:   SUNNYVALE CA 94086
Agent for Service of Process:   CORPNET, INCORPORATED
Agent Address:   340 N WESTLAKE BLVD STE 210
Agent City, State, Zip:   WESTLAKE VILLAGE CA 91362

Not sure if this the same terrahash but some close to this can give a visit?

Entity Address:   366 S MARY AVE
Entity City, State, Zip:   SUNNYVALE CA 94086

This is the county CAD info for that house:
https://www.sccassessor.org/apps/rollValueResult.aspx?SFrom=rp&SType=rp&ApnValue=16509009#

And it is listed for sale:
http://www.redfin.com/CA/Sunnyvale/366-S-Mary-Ave-94086/home/1591572

But that house separate mailing address:
853 AMES AV PALO ALTO CA 94303

Possibly the "real" location