Abstract: Aspects of the present disclosure relate to image data verification. In examples, a discrete cosine transform (DCT) is performed on image data and used to generate a set of DCT coefficients. In some instances, multiple block sizes are used when processing the image data, such that a set of DCT coefficients is generated for each block size. The resulting sets of DCT coefficients for the plurality of block sizes may be processed according to an expected distribution to determine whether the content of the image data is likely to be authentic or likely to be altered, such that an indication may be provided in association with the image data accordingly.

Abstract: The invention is directed to a network for distributing streaming media presentations. The streaming media presentations may take various forms including Windows Media™, among others. The network comprises an intranet having a management server and one or more edge servers. Content creators upload streaming media files and presentations to the management server. The management server then distributes the streaming media files to the edge servers from which the files may be broadcast to multiple viewers. The creation tool may also use a Web-based interface to configure the management server and manage edge servers. A viewer may request the media from the management server and be redirected to an edge server for retrieval of the streaming media. The edge server, if it has not cached the streaming media, may acquire the streaming media from the management server and simultaneously distribute the stream and cache the file.