If a boat has been documented the documentation will include the name of the manufacturer, location, and date.
Where it can get tricky is with many of the Taiwan boats. Through the 1970s, 80s, and maybe beyond, the typical build process was to have a parent yard mold the hull and maybe the basic house structure. This will be the name of the manufacturer on the paperwork.
Then the hulls and other structures were trucked or floated to any number of small, family-owned boatyards on Taiwan for completion. This is one reason the quality of many of the Taiwan makes can vary all over the map. One yard might have used good-quality marine ply for the stiffeners in the cabin walls, another yard might have used cut-up packing crates and pallets.
So two very different levels of material quality used in the exact same make and model of boat. The hulls of these boats could be just one number apart.
The only way to find out what was used in a particular boat is to take it apart, which is generally not practical to do.
This is why getting a good survey done on these boats by a surveyor who really knows all the variables in the brand is so important.
This is also why prices can vary a lot in these kinds of boats, as opposed to makes where every boat was made by the same people in the same facility: Grand Banks, Nordic Tug, etc, where the consistency of quality is an advantage of the brand.
That's not to say one can't find a crappy, neglected, abused Grand Banks or Nordic Tug. Any make can be reduced to junk by poor maintenance, bad operation, and neglect. But the "brand" names tend to hold up under less-than-ideal treatmet for longer than some of the other makes.
So far as I know, there is no all-encompassing data base for the histories of production boats. In this respect, it's like buying a used car. You have to judge each one on its own merits. Which is why, again, getting thorough hull/systems and engine surveys done on a boat you are really interested in is essential.