Various embodiments of a system and method for reporting and measuring consumption of media content are described. Embodiments may include computing a set of registration hash values for an encrypted content file representing each of one or more content items. To distribute a content item to a consumer, an encrypted content file representing the content item is delivered to a content viewer system. At the content viewer system, a set of playback sums is computed that corresponds to segments of the content item actually played on the content viewer system. The playback hash values can be matched with registration hash values to establish that one or more segments of a content item associated with the matched hash values have been played.