Publishing WG Telco, 2019-04-15: Duration; integrity hash

See minutes online for a more detailed record of the discussions.

Final issues on the duration values

While finalizing the move of duration values to the core WP documents, some specific technical questions came up. These were taken care of in the call:

1. What is the value of a resource level "duration" value? The resolution is that it should be a number (meaning the number of seconds), and the term's name is, for now, length.
2. What is the value of the top-level "duration" value? The resolution is to stick to the schema.org definitions of duration.
3. Is the duration term required? The resolution is that it is optional for a WP in general, and recommended for an audiobook.

The resolutions will be incorporated in the editors' draft in the coming days.

File hash, a.k.a. "integrity"

It was agreed to add an optional integrity when defining a resource. The value, and its semantics, is defined by the Subresource Integrity Recommendation.