Thank you very much for the reply, which holds the clue that was missing on the verification page:
mention of Hive in the website
Do I understand correctly that a cross-link between a Hive post and e.g. a YouTube upload would be sufficient as a proof that I'm the owner of both profiles?
Yes, that would be fine. You can just add the word "Hive". That would be enough.
These are visible in the upper-right corner, on top of the header banner.Thanks for your assistance! I just added a link to my HIVE profile (and other platform profiles) to the links section on my YouTube profile: https://www.youtube.com/WoodyofmC
Excellent. Thank you very much.
You have been verified:
https://hivewatchers.com/verifications?utf8=%E2%9C%93&verification%5Busername_search%5D=woody-mc
Again, THANKS a lot for your help and assistance — much appreciated!