Each DCP is delivered in the form of a verified ZIP file and the link is sent to you by email. The is a safe method to transfer files through the web.
We suggest you download the files via the secure app “Filemail app” available for windows, mac, and Linux or via the FTP client “Filezilla app”.
Before uploading or downloading DCPs or KDMs to or from FTP-Servers, the DCPs and KDMs should be zipped. During the upload or download process files that are stored in ASCII format – such as the XML files like Packing List (PKL), Composition Playlist (CPL), or Key Delivery Message (KDM) – could be altered by transfer errors and correspond in different ASCII characters, resulting in errors during DCP ingest or playback. Some FTP-Servers change line feeds or tabs resulting in bad signature hash values. Mac and Windows often use different line feed in text files. To prevent this source of errors before transferring such data all files should be zipped before the transaction. You should zip files for E-Mailing, too.
If any errors occur during the file transfer, the zip file will fail to unzip. This is the way to know that your sensitive files (DCPs or any other digital file) transferred correctly. You should unzip the file to be sure that it is error-free. You could also use as an alternate method the open-source application https://quickhash-gui.org/ in order to calculate the MD5 hash of the ZIP file. Compare this hash with the hash that we include in the e-mail text containing the link to make sure that they match. If the two files have even one different bit then, calculated hashes will be differnet.
source MD5 hash calculated in our system: 61247FEAB6A47C69BCBF5863275FC125
target MD5 hash calculated in your system: 61247FEAB6A47C69BCBF5863275FC125
Source hash matches target hash!