{"as_of":"2026-08-22T23:16:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:3d405ce3933ccb3a0e389ed20638d34a147552aa0b5d7dd44b7868f93bf4849d","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":3,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":3,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-22T06:32:14.747728+00:00","state":"measured"},{"denominator":3,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":3,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-16T04:28:14.882350Z","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":"2026-08-05T23:22:48.829730Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1907.01053","last_updated":"2021-01-25T18:23:17Z","snapshot_observed_at":"2026-08-18T07:29:04.473667Z","submitted_at":"2019-07-01T20:17:09Z","title":"Tropical Grassmannians, cluster algebras and scattering amplitudes","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1907.01053","snapshot_observed_at":"2026-08-08T11:15:50.228466Z","title":"Drummond, J","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.08016","last_updated":"2025-02-20T19:00:07Z","snapshot_observed_at":"2026-08-15T15:10:33.156693Z","submitted_at":"2025-02-11T23:31:39Z","title":"The CEGM NLSM","version":2},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-08-08T11:15:50.228466Z"},"links":{"cited_paper":"/paper/1907.01053","citing_paper":"/paper/2502.08016"},"observation_digest":"sha256:67c054785bf92588e2260bc7aec3006a8b4c67bdfbfd44023db09b97d22abca7","observation_id":"9a5d7c8e-3c74-486a-905c-b6b85d9b8da0","resolution":{"observed_at":"2026-08-08T11:15:50.228466Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1907.01053","last_updated":"2021-01-25T18:23:17Z","snapshot_observed_at":"2026-08-18T07:29:04.473667Z","submitted_at":"2019-07-01T20:17:09Z","title":"Tropical Grassmannians, cluster algebras and scattering amplitudes","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1907.01053","snapshot_observed_at":"2026-08-16T04:28:14.882350Z","title":"Drummond, J","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2505.01245","last_updated":"2025-05-02T13:13:13Z","snapshot_observed_at":"2026-08-20T12:51:44.504729Z","submitted_at":"2025-05-02T13:13:13Z","title":"Hexagonal Wilson loop with Lagrangian insertion at two loops in $\\mathcal{N}=4$ super Yang-Mills theory","version":1},"reference_index":99,"source":"pdf_text","source_observed_at":"2026-08-16T04:28:14.882350Z"},"links":{"cited_paper":"/paper/1907.01053","citing_paper":"/paper/2505.01245"},"observation_digest":"sha256:cce78db0e586c034232eec48bdb471e65fad48411e3dfe7a65066378ec102e09","observation_id":"d23e2c84-790a-4c26-9d15-23796c6e10aa","resolution":{"observed_at":"2026-08-16T04:28:14.882350Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1907.01053","last_updated":"2021-01-25T18:23:17Z","snapshot_observed_at":"2026-08-18T07:29:04.473667Z","submitted_at":"2019-07-01T20:17:09Z","title":"Tropical Grassmannians, cluster algebras and scattering amplitudes","version":2},"cited_work":{"arxiv_id":"1907.01053","doi":null,"metadata_source":"pith","pith_arxiv_id":"1907.01053","snapshot_observed_at":"2026-08-05T23:22:48.829730Z","title":"Tropical Grassmannians, cluster algebras and scattering amplitudes","venue":"hep-th","work_id":"64874567-2347-40d7-bd3c-2416ce4e5add","year":2019},"citing_paper":{"arxiv_id":"2508.05443","last_updated":"2025-08-07T14:32:16Z","snapshot_observed_at":"2026-08-10T01:36:13.425750Z","submitted_at":"2025-08-07T14:32:16Z","title":"Geometric Landau Analysis and Symbol Bootstrap","version":1},"reference_index":90,"source":"arxiv_source","source_observed_at":"2026-08-05T23:22:47.981372Z"},"links":{"cited_paper":"/paper/1907.01053","citing_paper":"/paper/2508.05443"},"observation_digest":"sha256:92820442d6540e7c9bc794e99eab34c3df4eacf19c5ac9bb7989a1675894a8c5","observation_id":"9c582d8f-4c16-44ce-9034-26ee810d87f6","resolution":{"observed_at":"2026-08-05T23:22:48.832519Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-22T06:32:14.747728+00:00","source":"crossref"},{"observed_at":"2026-08-22T06:32:06.552537+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1907.01053/citation-record","integrity":"/paper/1907.01053/integrity","json":"/paper/1907.01053/citation-record.json","paper":"/paper/1907.01053"},"outbound":[],"paper":{"arxiv_id":"1907.01053","last_updated":"2021-01-25T18:23:17Z","latest_version":2,"primary_category":"hep-th","snapshot_observed_at":"2026-08-18T07:29:04.473667Z","submitted_at":"2019-07-01T20:17:09Z","title":"Tropical Grassmannians, cluster algebras and scattering amplitudes"},"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":"2026-08-22T06:32:14.747728+00:00","source":"crossref"},{"observed_at":"2026-08-22T06:32:06.552537+00:00","source":"retraction_watch"}],"thesis":"As of 22 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 3 inbound Pith citation observations for arXiv:1907.01053."}