The sentinel.
WatchGuard is a B2B proof-of-watch validation service, built to answer one question for advertisers and pay-to-click platforms: did a real person actually watch this? It combines device-level heartbeat timing, multi-source byte validation, and ASN reputation checks into a single confidence score.
Where ad fraud hides in the gap between "a view was logged" and "a person watched," WatchGuard is built to close that gap.