Sony Group Corporation
METHODS FOR PROVIDING AND CHECKING DATA PROVENANCE

Abstract:

It is difficult to judge from a digital file only if it has been modified. By providing data provenance for a digital file when it is created and edited, the credibility of the file can be assessed. In a method for providing data provenance a digital media file comprising data and metadata is received (S40). Then a first storage ID, which identifies a first storage that is uniquely associated with the received file, is retrieved from the metadata (S41). An edited digital media file, which is an edited version of the received file is received (S42). A second storage ID which identifies a second storage that is uniquely associated with the edited file is created (S43) and stored in the metadata of the edited file (S44). Finally, the first storage ID is stored (S45) in the second storage to create a link to the received file from which the edited file was created.