Spec sheet requires checksums, How should these be formatted?
There is no standard used by US broadcasters for how to format checksums. I've never delivered to a broadcaster that requires it, but I've mostly been involved in delivering commercials. DPP/AS-11 doesn't specify anything about checksums and neither does Netflix. I only know of one US broadcaster that does require checksums and they require using their proprietary software to build up the delivery package.