Yes it does involve people and records to some extent (although over time we can rely more and more on sensors/ IOT infrastructure). When verification involves people we should rely on data points that are inherent to whatever event we are trying to verify — the nurse that does a consultation, or the volunteer that delivers a meal — rather than relying on third persons who we’d have to pay to travel to the event location and verify.

Probably the most reliable verification would be a mix of human and machine intelligence, and the best way to get going with this is pick events that are easier to verify at first (sensors, QR codes) and then expand the logic (and the learnings) into more difficult events.