World map of registered nodes with a known owner and IPv4 address — i.e. exactly the population that has opted in to public address disclosure via the registry-submission form (see GET /api/nodes's existing privacy contract; this page exposes no address beyond what that endpoint already publishes for these same nodes, just projected as an approximate city-level lat/lon instead of a raw IP) — plus a second, hollow-circle-marker population of approximate, unverified anonymous node clusters, aggregated by city, from GET /api/nodes/map/extended. Anonymous markers show only a rough city location, an approximate node count, and the most recent observation time — never a per-node address, and never shown for a city that already has a registered node. This is a feasibility spike: no marker clustering beyond that, no filtering UI, no historical view.