JSON Schema presently specifies to use the "profile" link relation, e.g.:

Link: <http://example.com/Schema.json>;rel="profile"

However, the "profile" link relation is not supposed to be dereferenced. There's no way for an automated user agent to be able to follow this link and actually download the schema if it doesn't already have it.

Perhaps publish a link relation type, similar to profile, that is supposed to be downloaded?