I think it is safe to assume, given the buzz all around the donut battery, that VTT would immediately release a statement if this report was fake.

edit: https://www.vttresearch.com/en/news-and-ideas/donut-lab-comm...

Unfortunately that's not the same as VTT.

VTT would be more like "National Institute of Scientific Research"

Well there's this press release they would publish a report: https://www.vttresearch.com/en/news-and-ideas/donut-lab-comm... with as author the same name on the digital signature "Petri Söderena" for Organisation "Teknologian tutkimuskeskus VTT" and the chain is attested by "DVV Organisational Certificates - G4E" which is on the EU/EEA trusted list: https://eidas.ec.europa.eu/efda/trust-services/browse/eidas/... (by name and key signature). Looks like a legit VTT document to me.

It says its sign by this guy: https://www.vttresearch.com/en/news-and-ideas/petri-soderena...

He has an e-mail address and a phone number, I doubt that if the report is falsified it won't come out.

Elon Musk sells self driving cars since 10 years that don't self drive but his cars are actually decent cars and his rockets are revolutionary. Also, who isn't selling magical AGI since the last 4 years?

I think i will judge the battery and the magical AGI separately. The guy also sells magical motors that appear to be real with people riding motorbikes with those motors.