So did you find tipoffs to multiple INRA bases, or just the one in 12 Trianguli? We never really worked out how we were supposed to find the exact location of those bases, and Tip-Offs would be more elegant than the 'comb the desert' technique that was used.
Would be especially interested in a tip-off leading to Stuart Retreat in HIP 15329, as that was certainly datamined by nefarious individuals
Anyway, I may go and hang around in hope of some tip-offs
There are a bunch of Tip Off sites near the Inra bases (I added the bookmarks of the bases just recently), but I still have to fill some gaps in the breadcrump trail, which means, I have to find missing sites in the range of ~20ly.
Chances are very high that you do not even need a Tip Off to figure out the trail. You may be able to scan cores and receive messages anyhow - the only difference is the payout of the core scans. But that does not matter. The Tip Off missions seem to be there to give us starting points, to let us know where to begin our search.
Breadcrumps (so far) are crashed ships and settlements that give you messages if you scan the core.
Oh, here is one example of a part of such a 'breadcrump trail' which is a mixture of received TOs from the mysterious stranger, sites which I found by searching in the 20 ly range and bookmarks from the community (the inra bases) :
HIP 6324 <- 22,97 ly -> Jang O <- 20,59 ly -> Takan <- 22,58 -> 12 Trianguli <- 19,8 ly -> Paestae <- 22,79 lx -> HIP 12314 <- 21,99 ly -> HIP 12099
There was a TO site in HIP 14840 back in 2016 - I have searched that system but this site (among others) seems to be deleted.
So for now the closest verified TO site to HIP 15329 is HIP 12314, which is 30,79 ly away. If my trail theory is correct, there should be one or two more sites to be found ~20 ly away from both systems.