[pjc50]

This is related to "cadastral mapping" in real estate law systems. IP does not have such a map, or indeed any map at all. At best you might find a (no longer obligatory!) copyright notice on it saying who originally owned the rights to something. That doesn't work when the rights get sold.

There's no good way to even ask "who owns this?" for a piece of IP other than the highly inadequate and risky approach of just pirating it and waiting to see who sues you. But even then DMCA provides all sorts of problems with unauthorized groups claiming to be rightsholder representatives.

[bombcar]

For software at least, something akin to real estate may be needed long-term if you want to codify it, allowing adverse possession if you pay the taxes, etc.