Real estate deed/title records; will take a while to onboard existing records, but would then eliminate the need for title insurance (commonly required for home/land purchases in the US) as well as many types of real estate lend/lease scams.
I’m all for paper backups/verification of voting systems, but perhaps it’s time to consider open-source election software w peer review and/or open-hardware in addition to “low-tech” election oversight?