[AdrianRossouw]

with json-schema, the instance objects would have a $schema property referring to the schema of the document.

the schema has a links section, where you can define all the various related paths to use.

a 'suitably intelligent validator' should be able to resolve the links for you.

[1] http://tools.ietf.org/html/draft-zyp-json-schema-03#section-...