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Duplicate ISRC codes in Discogs (October 2019)

Since the ISRC codes were introduced people have gradually been adding them, or fixing them, which is a good thing. It also means that I can mor easily detect errors. Back in April 2019 I already wrote about detecting duplicate ISRC codes in a release so you probably want to read that and some older articles first.

So, what's the situation like half a year later? I took the Discogs dump covering data up until October 31 2019 and found 188 unique releases, and created the following chart, which shows where in the data set these releases can be found (but I cannot conclude anything useful from it):

Releases with duplicate ISRC codes in Discogs in October 2019

So it is slowly increasing and there are about 60 more than in April. I still have to go through these releases to see if these are data entry errors by Discogs users, if the label made a mistake (which also happens), or (in case of CDs) perhaps a drive with a malfunctioning firmware was used, as apparently there are CD drives out there with faulty firmware and programs that will not correctly extract ISRC codes. This definitely doesn't make things easier.
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