The hash value of each individual image file is saved in the metadata of the next file, This creates a chain of files that can no longer be changed. Data can only be saved in the most recent file. This ensures that the images remain unchanged as originals over time. Before the hash value is generated, a public and a private key are generated for each file to ensure ownership of each individual file. ownership of each individual file. The public key is stored in the metadata, while the private key must be downloaded separately. This means that the images are not only originals