Your reference library lives on one machine; your live operations on another — in a different city. A single question brings them together into one verifiable answer, with nothing leaving your ground. Take one machine out of service mid-answer and the other keeps answering. This is live — two real machines, right now.
Machine one holds a genuinely real U.S. + Canada municipal code library (real places throughout). Machine two holds an illustrative operations store for a fictional operator, Northwind Signage Group — real cities, sample business content, no real company's data. Every answer is verifiable and never leaves the two machines. When machine two is out of service, machine one answers from the last verified answer it already holds, and says so. A live demonstration of sovereign computation that keeps working when a machine goes dark. Not for distribution.