And even you approach and ask them how the procedure went, it's unlikely they'll answer it. Well, if I'm a winner, I won't be interested anymore to know how I've won with such.

Although some sort of verification needed to be done by them in able to verify and confirm that the winners deserve it. It's a lot of work if the winners numbers are a lot, coming from hundreds to thousands.

That's a lot of time needed for them check each of them and somehow it's a thought that counts for someone like OP. But as the majority wouldn't think of it especially if they're picked and part of the list.