In digital forensics, the presence or absence of this specific Profile ID can help determine if an image was captured by a specific device or edited by a particular software suite.
This sensitivity is what makes it so useful as a "checksum" for file integrity. Software providers often provide the MD5 hash of a downloadable file. After downloading it, you can run the same MD5 algorithm on your local copy. If the hash you generate matches the one provided by the software vendor, you can be certain that the file was downloaded without any corruption or tampering. 9d91003d4080b03d40742c819ea5228e full