Vincent Beaulieu

Antoine Lennartz

Pierre Racz

Julien Vary

Yannick Laberge

Vincent Labrecque

The present disclosure relates to systems and methods for tamper-evident storage of a media stream, and for serving tamper-evident media. The tamper-evident media is stored using a data structure comprising a payload field and an associated metadata field. A portion of a media stream is obtained from a media source. A set of parameters, to be stored in the metadata field of the data structure, is determined. A progenitor parameter to associate with the set of parameters is obtained, the progenitor parameter based on a hash of at least part of a previous data structure storing a previous portion of the media stream. The progenitor parameter is incorporated into the set of parameters, and the set of parameters is stored in the metadata field of the data structure. The portion of the media stream is stored in the payload field of the data structure.

Tamper-evident storage and provisioning of media streams

A secure chain data structure is stored by grouping source data into blocks of data, calculating a hash value of an immediate prior block for each block of said blocks of data and a hash value of a non-immediate prior block for at least some blocks of said blocks of data, associating the hash value or values of each block with each block of said blocks of data, and storing said blocks of data and their associated hash values to form a secure chain data structure. Trust can be provided to blocks in the secure chain data structure by later blocks containing valid hash values of prior blocks including valid ones of the hash values of non-immediate prior blocks.

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Sherbrooke, Canada

Vincent Beaulieu