Reduced to the Root is Maria’s own label.
(BTW, English version doesn’t mention the year)
It’s a common pitfall to assume “Bandcamp artist account” = “no label”
While Bandcamp has a concept of label accounts with all kinds of features similar to usual platforms (DDEX), it costs extra among others.
So some just create a normal artist account for label activities. E.g. Alfa Matrix or ProNoize
You’ll also often find separate listings on the real artist and “label as artist account”, whereas the label was responsible for the physical release. It having a digital version too is rather a side-effect.