Nobody's asking you to post his death certificate or his passport photo or something, but you have to see it from our point of view: you're a random newbie with a handful of posts and registered only last year that has popped up to proclaim someone dead, and you could just be taking advantage of his obvious absence. I am also a private person but there's plenty of people here who could reveal PMs or other messenger chats with me to prove that they were at least in contact with me without revealing any private or personal info. At the moment we don't even know if you ever interreacted with him at all and you haven't posted in any threads he was active in here, but on the flip side you could have been best mates with him for years on some other forum or messenger app. If you don't want to reveal anything like that then I'll respect you for respecting tecshare's right to privacy but most people here won't and shouldn't just take your word for it right now.