{"as_of":"2026-08-17T20:05:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:bd66fc74821fb7ab584fbf38c0ca647f1e99080cbeec3e213ce230c793b42d42","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-17T06:30:58.91139+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T10:50:56.157870Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"pith","source_observed_at":"2026-08-14T10:50:56.341210Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1807.05921","last_updated":"2018-07-27T14:23:37Z","snapshot_observed_at":"2026-08-14T18:51:29.864766Z","submitted_at":"2018-07-16T15:28:15Z","title":"The twistor Wilson loop and the amplituhedron","version":2},"cited_work":{"arxiv_id":"1807.05921","doi":null,"metadata_source":"pith","pith_arxiv_id":"1807.05921","snapshot_observed_at":"2026-08-14T10:50:56.341210Z","title":"The twistor Wilson loop and the amplituhedron","venue":"hep-th","work_id":"097d0c2f-c1f5-4daa-a5a4-ae3dd1ef20c5","year":2018},"citing_paper":{"arxiv_id":"1908.10919","last_updated":"2021-02-16T14:51:56Z","snapshot_observed_at":"2026-08-17T15:13:51.120987Z","submitted_at":"2019-08-28T19:36:21Z","title":"Combinatorics of the geometry of Wilson loop diagrams I: equivalence classes via matroids and polytopes","version":2},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-14T10:50:56.157870Z"},"links":{"cited_paper":"/paper/1807.05921","citing_paper":"/paper/1908.10919"},"observation_digest":"sha256:fa1701c627100d564df1819837e278d80021487a83e134a620d001d9d998cc88","observation_id":"1d005614-0bb8-4be7-aa24-cf79d055b8aa","resolution":{"observed_at":"2026-08-14T10:50:56.348265Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-17T06:30:58.91139+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-17T06:30:58.91139+00:00","source":"crossref"},{"observed_at":"2026-08-17T06:30:54.323127+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1807.05921/citation-record","integrity":"/paper/1807.05921/integrity","json":"/paper/1807.05921/citation-record.json","paper":"/paper/1807.05921"},"outbound":[],"paper":{"arxiv_id":"1807.05921","last_updated":"2018-07-27T14:23:37Z","latest_version":2,"primary_category":"hep-th","snapshot_observed_at":"2026-08-14T18:51:29.864766Z","submitted_at":"2018-07-16T15:28:15Z","title":"The twistor Wilson loop and the amplituhedron"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-17T06:30:58.91139+00:00","source":"crossref"},{"observed_at":"2026-08-17T06:30:54.323127+00:00","source":"retraction_watch"}],"thesis":"As of 17 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1807.05921."}