Creating a pkg:content URI for consistent blob hash representation

[lumjjb]

Hashes are one of the common ways in which content blobs are identified. In most of the spec, there is a way of which this is encoded, either via a string like "sha256:..." or a json that looks like {"alg":"sha256", "value":"..."}. This requires understanding the spec for each data format that wants to express a content hash of a blob.

Wondering if we can create a consistent way to define and consume this through a PURL. Maybe something like:

pkg:content/<alg>/<value>

or some variation using parameters (not super fluent in what the best way to encode this is!)

[bureado]

Would the checksum qualifier satisfy this?

[pombredanne]

@lumjjb using qualifiers is the way to go here IMHO