@prefix this: <https://w3id.org/np/RAJTZRxP4N4xuvA7-F1N59htYOee8RjUJhFUoj1AUzZDQ> .
@prefix sub: <https://w3id.org/np/RAJTZRxP4N4xuvA7-F1N59htYOee8RjUJhFUoj1AUzZDQ/> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix nt: <https://w3id.org/np/o/ntemplate/> .
@prefix npx: <http://purl.org/nanopub/x/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix orcid: <https://orcid.org/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .

sub:Head {
  this: a np:Nanopublication;
    np:hasAssertion sub:assertion;
    np:hasProvenance sub:provenance;
    np:hasPublicationInfo sub:pubinfo .
}

sub:assertion {
  sub:get-user-introductions a <https://w3id.org/kpxl/grlc/grlc-query>;
    dct:description "This query returns the introduction nanopublications of a given user, with their creation date, key location, and declared public key hashes.";
    dct:license <http://www.apache.org/licenses/LICENSE-2.0>;
    rdfs:label "Get user introductions";
    <https://w3id.org/kpxl/grlc/endpoint> <https://w3id.org/np/l/nanopub-query-1.1/repo/type/77757cabf6184c51c20b8b0fe5dc5e1365b7f628448335184ad54319a0affdfc>;
    <https://w3id.org/kpxl/grlc/sparql> """prefix np: <http://www.nanopub.org/nschema#>
prefix npx: <http://purl.org/nanopub/x/>
prefix npa: <http://purl.org/nanopub/admin/>
prefix dct: <http://purl.org/dc/terms/>

select (max(?date0) as ?date) (sample(str(?keyLocation)) as ?location) (group_concat(distinct ?keyHash; separator=\", \") as ?keys) ?np (\"^\" as ?np_label) where {
  graph npa:graph {
    ?np npa:hasValidSignatureForPublicKey ?introPubkey .
    filter not exists { ?npx npx:invalidates ?np ; npa:hasValidSignatureForPublicKey ?introPubkey . }
    ?np dct:created ?date0 .
    ?np np:hasAssertion ?a .
  }
  graph ?a {
    ?keydeclaration npx:declaredBy ?_user_iri .
    ?keydeclaration npx:hasPublicKey ?pubkey .
    optional { ?keydeclaration npx:hasKeyLocation ?keyLocation . }
    bind(substr(sha256(?pubkey), 1, 10) as ?keyHash)
  }
}
group by ?np
order by desc(max(?date0))""" .
}

sub:provenance {
  sub:assertion prov:wasAttributedTo orcid:0000-0002-1267-0234 .
}

sub:pubinfo {
  orcid:0000-0002-1267-0234 foaf:name "Tobias Kuhn" .
  
  this: dct:created "2026-06-02T11:55:27Z"^^xsd:dateTime;
    dct:creator orcid:0000-0002-1267-0234;
    dct:license <https://creativecommons.org/licenses/by/4.0/>;
    npx:embeds sub:get-user-introductions;
    nt:wasCreatedFromProvenanceTemplate <https://w3id.org/np/RA7lSq6MuK_TIC6JMSHvLtee3lpLoZDOqLJCLXevnrPoU>;
    nt:wasCreatedFromPubinfoTemplate <https://w3id.org/np/RA0J4vUn_dekg-U1kK3AOEt02p9mT2WO03uGxLDec1jLw>,
      <https://w3id.org/np/RAoTD7udB2KtUuOuAe74tJi1t3VzK0DyWS7rYVAq1GRvw>, <https://w3id.org/np/RAukAcWHRDlkqxk7H2XNSegc1WnHI569INvNr-xdptDGI>;
    nt:wasCreatedFromTemplate <https://w3id.org/np/RAEFAt-QcFK0ZhqfvlsmS10BnzGJA0xwOICZXkO-ai87k> .
  
  sub:sig npx:hasAlgorithm "RSA";
    npx:hasPublicKey "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB";
    npx:hasSignature "hUaCBNtLZQy36dfslsKDbWHAfKixmfJnDQFmWvgJ+C+HhmLVv3fp8dyhFt0giLGuGNlu6ims6/JWHNlOftkOsTlg2pBhSyh6ryhTdgiNRiygG3MMpO/6x7D2nvn5jjpjp3PGTAD287ChYQm1+7BhYW+mitAeGpAGsYdezTzAUDU=";
    npx:hasSignatureTarget this:;
    npx:signedBy orcid:0000-0002-1267-0234 .
}