Hashrate counts the hashes per second that miners contribute while competing to add the next block, and it is the usual gauge of how much work protects the network. Anyone who follows mining knows the term, whether they run machines, sell them or analyse the market. The word is English technical vocabulary used unchanged in German. The .de ending addresses German miners, investors and hosting customers, and suits a business with German contracts and support.
In the mining category the name is part of the Bitcoin Mining DACH set, which groups mining names for the German-speaking region. The same name is also held on .org and can be acquired together, for example to separate a commercial hosting business from an open data project. Typical buyers include a mining operator using surplus renewable energy, a hosting provider, a hardware reseller, or a research team publishing network statistics.