The thing that people tend to forget about HDTracks (this is especially true of a handful of idiots who hang out at Computer Audiophile) is that it's not a label, it's a retailer.  It can only sell what it can license from the record companies, and if the label chooses not to provide detailed provenance information to HDT then HDT can't provide it to potential customers.

I also don't have a lot of sympathy for the clowns at CA who argue that HDT has some sort of moral responsibility to ruthlessly weed out downloadables that don't meet some impossible-to-satisfy purist's arbitrary notion of what is commercially acceptable.  I wonder if those folks would have said, 30 years ago, that Tower, Sam Goody, et al. had a moral responsibility to do random quality checks on their inventory of physical product before putting it on the shelf.  Thirty years ago, you bought it, took it home and played it, and if it was defective you brought it back for exchange or refund.  Not sure what the digital-download analogue to that process would be, since it's impossible for a seller of downloads to know whether any particular customer is genuinely displeased or made a copy and is scamming the seller.