Build a reusable geographic data and map-verification systemReference Materials

Task prompt

Build a reusable geographic data and map-verification system for checking whether locations, addresses, boundaries, landmarks, facilities, routes, and other place-based information can be trusted before being used for research, planning, reporting, or operational decisions. The goal is not to create a travel itinerary or simply identify places on a map. Instead, develop a practical system for comparing geographic information from multiple sources, identifying discrepancies, documenting evidence, handling outdated information, and assigning confidence to geographic claims. Research authoritative sources such as government mapping agencies, official cadastral or geographic-information organizations, recognized open-data projects, municipal authorities, transportation agencies, environmental agencies, universities, and established geospatial standards organizations. Treat commercial map platforms, directories, crowdsourced listings, and search results as supplementary evidence rather than automatically authoritative sources. The tracker should evaluate location identity, coordinates, addresses, administrative boundaries, facility status, road or access information, geographic relationships, map coverage, source dates, coordinate accuracy where available, and conflicting records. Include difficult fictional cases where two authoritative sources disagree, a place has multiple names, an address points to the wrong physical location, a facility appears open in one dataset but closed in another, a boundary has changed, and an apparently accurate coordinate is actually associated with the wrong entity. The final system should include evidence records, source-quality assessment, discrepancy classification, confidence scoring, temporal checks, verification workflows, escalation rules, and a decision summary. Avoid depending on temporary map listings or current commercial rankings. The finished system should remain useful months later and allow a stranger to verify a new geographic claim without needing follow-up instructions.