Resolves the canonical (latest authorized) version of a space-governed view definition, per docs/views-and-presets-as-maintained-resources.md in the nanodash repo. Takes the definition's kind IRI (its dct:isVersionOf target; kind) and the governing space IRI (space) and returns at most one row: the newest version nanopub that (a) declares dct:isVersionOf <kind> plus gen:governedBy <space>, and (b) is signed by a pubkey of a CURRENT member+ (admin/maintainer/member, not observer) of that space's governing ref -- with the kind validated as a maintained resource of the space (npa:isMaintainedBy + npa:hasGoverningSpaceRef in the materialized state graph; the two anchors that make gen:governedBy a label, not a grant). The RoleInstantiation's npa:forSpace/npa:forSpaceRef pair ties the governing ref to the given space IRI, so a multi-maintainer kind never floats across pairs. An empty result means no valid floating candidate: the caller keeps its pinned version (the pin is the floor and is not re-validated here). Versions retracted by their own signing key are skipped. Hosted on the spaces repo; the version/pubkey lookup federates to the gen:ResourceView type repo with kind and space as text-substituted constants, so the federated scan stays narrow.
prefix np: <http://www.nanopub.org/nschema#> prefix npa: <http://purl.org/nanopub/admin/> prefix npx: <http://purl.org/nanopub/x/> prefix dct: <http://purl.org/dc/terms/> prefix gen: <https://w3id.org/kpxl/gen/terms/> select distinct ?version ?date ?np ("^" as ?np_label) where { graph npa:graph { npa:thisRepo npa:hasCurrentSpaceState ?stateG . } graph ?stateG { ?_kind_iri npa:isMaintainedBy ?_space_iri ; npa:hasGoverningSpaceRef ?ref . ?ri a gen:RoleInstantiation ; npa:forSpace ?_space_iri ; npa:forSpaceRef ?ref ; npa:hasRoleType ?tier ; npa:forAgent ?agent . filter(?tier = gen:AdminRole || ?tier = gen:MaintainerRole || ?tier = gen:MemberRole) ?acct a npa:AccountState ; npa:agent ?agent ; npa:pubkey ?pubkey . } service <https://w3id.org/np/l/nanopub-query-1.1/repo/type/ec6722efa3b44e0a18aa63afe5964158a1fdb7f0413ea5f23bfddf5c03ca0221> { graph npa:graph { ?np npa:hasValidSignatureForPublicKeyHash ?pubkey ; dct:created ?date ; npx:embeds ?version ; np:hasAssertion ?a . filter not exists { ?npx npx:invalidates ?np ; npa:hasValidSignatureForPublicKeyHash ?pubkey . } } graph ?a { ?version dct:isVersionOf ?_kind_iri ; gen:governedBy ?_space_iri . } } } order by desc(?date) desc(?np) limit 1