Google patents system to flag false ads using user reports

1. A method performed by one or more servers, the method comprising: storing, by one or more servers, a plurality of impression attestation tokens for a plurality of presentations of a digital component; storing, by the one or more servers, a plurality of click attestation tokens that each correspond to a particular impression attestation token among the plurality of impression attestation tokens; comparing, by the one or more servers, presentation data and interaction data of a false digital component alert with the plurality of impression attestation tokens and the plurality of click attestation tokens; determining, by the one or more servers and based on the comparing, that the false digital component alert includes (i) a particular impression attestation token from among the stored plurality of impression attestation tokens and (ii) a corresponding particular click attestation token from among the stored plurality of click attestation tokens; validating, by the one or more servers, the false digital component alert by verifying a digital signature included in the particular impression attestation token using a public key associated with a client device or browser that generated the particular impression attestation token, wherein the validating is based on the determination that the false digital component alert includes the particular impression attestation token and the corresponding particular click attestation token; in response to validating the false digital component alert, adding the false digital component alert to an aggregated report for the digital component; determining, by the one or more servers, that a magnitude of validated false digital component alerts in the aggregated report for the digital component meets a threshold; and adjusting, by the one or more servers, distribution of the digital component to client devices based on the magnitude of the validated false digital component alerts meeting the threshold.