The Dutch military intelligence agency MIVD had infiltrants in Ukraine after MH-17 of a plot to blow up the Nord Stream, they tipped off the CIA, who in turn warned Ukraine not to do it, three months before it happened; source [0], translation [1].
Germany has issued an arrest warrant for a Ukranian national [2] who along with two accomplices was on board the yacht Andromeda, which was located at the blast site days before the blast and on which traces of the same explosive was found as used on the pipelines, as well as DNA evidence.
I suppose it's not "actual evidence Ukraine did it", but it's more than enough evidence to make a Ukranian national that since fled back to Ukraine a suspect.
> The two other suspects, a married couple who do not have warrants issued in their names, have denied knowing Z. and said that they were on vacation in Bulgaria when the attack took place.
:-/
So, one diver moved and installed 500kg of explosives in 4 places in front of a married couple?
The "investigations" you reference were by German media, whereas the wsj article was allegedly from German authorities. Moreover, while you accuse the wsj article as "hearsay", the same is true for the tagesspiegel you linked. The crux of that article's claim is that the company that rented the yacht had Crimean owners with ties to Russia, but no proof was presented. We're asked to trust the journalists on that, just as we're asked to trust the wsj journalists on the facts of the German authorities' investigation.
To attribute culpability, you need solid proof. I'm not saying that Russia did it - simply that there's enough evidence that Russia had means, motive and opportunity - which makes it a probable candidate.
Germany has issued an arrest warrant for a Ukranian national [2] who along with two accomplices was on board the yacht Andromeda, which was located at the blast site days before the blast and on which traces of the same explosive was found as used on the pipelines, as well as DNA evidence.
I suppose it's not "actual evidence Ukraine did it", but it's more than enough evidence to make a Ukranian national that since fled back to Ukraine a suspect.
[0] https://nos.nl/artikel/2478770-vs-waarschuwde-oekraine-nord-... [1] https://nos-nl.translate.goog/artikel/2478770-vs-waarschuwde... [2] https://www.dw.com/en/nord-stream-explosions-germany-issues-...