Dating, Social & UGC Trust-and-Safety Engineering Decision Sheet

One-page planner: the three AI systems (match & rank / protect & moderate / create & connect), the two lines (moderation: AI scores, a layered system and a human decide; platform: reach and minors trigger duties, not your tech), the moderation funnel (hash-match known-illegal + ML classifiers for new + user reports + human review + appeals, tuned per severity), the live-video sampling math (every frame ~$108/hr vs every 2 s ~$1.80/hr per stream), the four 2026 regulatory regimes (DSA, UK Online Safety Act, TAKE IT DOWN Act 48-hour NCII removal, EU AI Act Article 50), the verification front door (age estimation, liveness/Face Check, deepfake provenance), and the buy-vs-assemble-vs-build split with a mandatory specialist CSAM service on every route.