Dear Alexey,
I found your Danish observations very tasty, and your karlik/dwarf/Hyde point filled me with pleasure, but I must make a small correction to your otherwise completely delectable contribution.
The word "kinbote" does not actually appear in the RLS story. But the act of kinbote defines the first action involving Jekyll/Hyde in the tale. Hyde commits a criminal act - - he runs over and tramples a small girl. Her family (or kin) come after Hyde demanding retribution (bot or bote in old legal language). Of course Jekyll is more endangered by the confrontation with the child's family (he might be exposed) and he, Jekyll, can only escape by paying kinbote for Hyde's criminal act. Even though RLS was trained to the law and may have known the word kinbote, his readers would not.
But see how nicely the obscurity of the word suited VN's purposes - - allowing him to reveal and hide at the same time. It strikes me as a literary sort of camouflage. Compare to hiding the "C" in the "G" if I'm reading correctly.
By the way, if I'm reading incorrectly, how can you (or anyone else) explain that G = C = K = S lead me, via J & H, to "kinbote"? Although I was perfectly willing to find coincidence in Lolita/Dolly/Winslow/Russia/Tamara/Colette I am hard put to find it here.
Carolyn