Validation of Media Item Accuracy During Content Delivery

This disclosure describes techniques for validating media item accuracy before a media item is provided for rendering on a user device. A unique key or hash value is generated for each media item such as an image, video clip, etc. at a time of content creation. Upon receipt of a request for rendering content on a user device, hash values are determined for the media item(s) included in the content. The determined hash values are compared to corresponding hash values of the media items previously generated and stored. If it is determined that the determined hash values match the corresponding hash values generated at the time of content creation, the content including the media items is rendered on the user device. In this manner, it is ensured that content such as advertising is rendered with the correct media items included, avoiding brand confusion