Domains point to IPs, and IPs already have subpoenable ownership records at RIRs. In the real estate metaphor: we have property ownership records, but we don't have records of every rental tenancy.
https://www.zdnet.com/home-and-office/networking/court-rules...
See: Are IP Address Allocations Property? (2014) https://www.ethanheilman.com/x/19/index.html