Affidavit

An Affidavit of Performance is the station's formal certification: often notarized: that it has delivered exactly what the advertiser paid for. Every aired spot, its precise airtime, and its program adjacency are documented. Affidavits are a legal requirement for co-op reimbursement, political advertising, and many large national buys where the advertiser needs auditable proof of delivery.

Affidavits are only as trustworthy as the underlying station logs that generate them. Independent, real-time monitoring: exactly what Spotwise does: provides an external verification layer. A station cannot overstate its delivery in an affidavit if a third-party monitor is logging the same airwaves in parallel. This is why broadcast monitoring has become table stakes for any serious ad-buying organization.