Oh, your title is just fine, and I'm not criticizing it for accuracy. I would've found myself with the same dilemma as to how to word it, since there's almost no way around it coming across like something Drebbin would say in one of those Naked Gun flicks. Death brings about black humor; we humans can't help ourselves.
But we've got to verify it legally To see...
To see?
If he...
If he?
Is morally, ethically
Spiritually, physically
Positively, absolutely
Undeniably and reliably
Dead!
He's not only merely dead, he's really most sincerely dead.