As a practical matter, you don't actually own anything that you can't prove you own.
Nonsense.
In the court case cited above, the felon probably had no kind of certificate that showed he owned the firearms. Yet the court acknowledged his ownership, allowed them to be sold, and allowed the felon to receive payment for them.
And he "proved" that he owned them in court by offering sworn testimony that they were his that no one contradicted.
