Core concepts
Proof chain
The proof chain links placement requests, decisions, render events, and visibility/click beacons into an auditable record.
Inputs
Placements establish the request context. Decisions identify selected assets. Beacons record what was rendered and observed.
Idempotency
Beacon IDs should be stable per event. Re-sending the same beacon must not double-count settlement events.
Check the evidence
After integration changes, check that each rendered placement has the expected observation events and that retries do not duplicate them.
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