Below the BTC address is a link to a blog which is actually the personal page of somebody who claims in "projects" that dns.watch is his project.
Indeed, that also matches with the name on the AS ("formerly Ideal-Hosting UG"). Risky to run something without imprint in Germany.
And if for example companies now donate, does that now make it trustable?
Quad9 seems to be a valid 501 org, there must be an equivalent in germany?
The irony being that for us (Quad9) the majority of the tinfoil-hat complaints are that companies donating to a non-profit make it _less_ trustworthy. Can't win either way. :-)