nostr:npub19z3ev8cq4efyn4kyew6tw3hns7fta9ncvmr32aedams0qg2lqefsspy5pv https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57Pt2r1.pdf

Some light reading material and some good information about how the world is moving in exchange appraisal of your property