No, the registry would not show that you are not in possession of any of them.
If you bought guns at a gun shop following the current process, sold them to prohibited persons, and the police found one of those firearms with or without a damaged serial number in the possession of a prohibited person, that firearm can be traced back to you now. The problem is that nothing is done about it.
https://www.jhsph.edu/news/news-rel...urchase-violations-depends-on-state-laws.html
Even when successfully prosecuted, the punishment is insufficient:
"Jalita Jenera Johnson has been sentenced for lying when she bought a gun and 50-round drum magazine for her convicted felon boyfriend, Marcus Wheeler. Wheeler later used the gun and magazine to kill an Omaha, Nebraska, police officer while the officer was attempting to serve a warrant on Wheeler for his arrest. Jalita Jenera Johnson, 26, of Jonesboro, Georgia, has been sentenced to one year of probation, 40 hours of community service, and 180 days’ home confinement. Johnson was convicted on these charges on August 19, 2015, after she pleaded guilty."
https://www.justice.gov/usao-ndga/p...uying-firearm-used-kill-omaha-nebraska-police