by 2601:84:c701:2f60:d0b3:b8b0:4156:8eae
I own a 1.0 version of ROC and it still installs to this day, and can be run without internet. It doesn't have any of the traits of Securom to my knowledge.
I'm also checking and it sounds like this can be run using an IMG in Daemon's tools, which is something Securom does not allow.