Your word play is defective. There is no claim of Sovereignty in the Constitution. Quote it if you've got it. Article VI isn't it.
The founding fathers as a whole profoundly mistrusted a democracy.
You mean Hamilton and his merchant pals. Well, we've heard their maxim of government before, blurted out by a Philadelphia congressman on an FBI videotape: "Money talks, and bullshit walks!" What a proud motto for a political movement! Proud as Carthage, I'm sure.
As such power that would be vested in the people in a democracy is instead, vested in representatives of the people.
Oh, I see -- the representatives represent themselves, and tell us what to do afterwards. Gee, I wish I'd been born rich.
But even beyond that, no people have the right deny the delegated powers, since the constitution is the supreme law of the land.
You bet. So, chasing the pecking order upstream, we go from me, the lowly louse of a citizen, upstream to the powerful Congressmen and the magistrates, and further upstream to the people who give them money. I can't get further up the stream than them........nobody pays them or tells them what to do, rather the other way around.......so I conclude from your precis that we are a plutocratic oligarchy, and ought by right to be, just like Hamilton wanted.
Guess the Bill of Rights was kinda otiose after all, eh? The Antifederalists could have saved their breath, arguing with driven businessmen working on their bottom lines.