{"as_of":"2026-08-18T12:09:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:63dc478063c47b6a780a116ecca2e838a92bcd19685a82bf89bf385ccdec93f8","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":2,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":2,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-18T06:34:40.430872+00:00","state":"measured"},{"denominator":2,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":2,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-15T21:35:27.971558Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"arxiv_reference","source_observed_at":"2026-05-16T23:11:21.374672Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1909.10244","last_updated":"2020-01-17T07:10:11Z","snapshot_observed_at":"2026-08-11T02:16:07.136537Z","submitted_at":"2019-09-23T09:35:48Z","title":"A subtraction scheme for massive QED","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1909.10244","snapshot_observed_at":"2026-08-15T21:35:27.971558Z","title":"Engel, A","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2505.09678","last_updated":"2025-07-17T12:57:34Z","snapshot_observed_at":"2026-08-16T21:07:31.608363Z","submitted_at":"2025-05-14T18:00:01Z","title":"Towards testing $(g-2)_\\tau$ in $e^+e^-\\to\\tau^+\\tau^-$: radiative corrections and projections for Belle II","version":2},"reference_index":135,"source":"pdf_text","source_observed_at":"2026-08-15T21:35:27.971558Z"},"links":{"cited_paper":"/paper/1909.10244","citing_paper":"/paper/2505.09678"},"observation_digest":"sha256:772e7382cf4a945df47bea466b44c38669d8ebedb5fb866e2af3c3ce8c9f2004","observation_id":"2aa4c2e3-7f87-4b9a-b190-bc7332164aee","resolution":{"observed_at":"2026-08-15T21:35:27.971558Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1909.10244","last_updated":"2020-01-17T07:10:11Z","snapshot_observed_at":"2026-08-11T02:16:07.136537Z","submitted_at":"2019-09-23T09:35:48Z","title":"A subtraction scheme for massive QED","version":2},"cited_work":{"arxiv_id":"1909.10244","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1909.10244","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Engel, A","venue":null,"work_id":"fa26263d-8af5-41d2-bc99-67fab8218ae4","year":2020},"citing_paper":{"arxiv_id":"2512.10709","last_updated":"2026-04-20T08:07:23Z","snapshot_observed_at":"2026-08-14T07:47:00.116409Z","submitted_at":"2025-12-11T14:48:02Z","title":"Disperon QED","version":3},"reference_index":59,"source":"pdf_text","source_observed_at":"2026-05-16T23:10:25.632472Z"},"links":{"cited_paper":"/paper/1909.10244","citing_paper":"/paper/2512.10709"},"observation_digest":"sha256:c6cc027eb103f97d05f9d4d6fd8ed13a481bd1fd12eefb3b90bcaf13eb860394","observation_id":"ff1d228c-948b-4cfb-b7ad-f99d361d649d","resolution":{"observed_at":"2026-05-16T23:11:21.376674Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1909.10244/citation-record","integrity":"/paper/1909.10244/integrity","json":"/paper/1909.10244/citation-record.json","paper":"/paper/1909.10244"},"outbound":[],"paper":{"arxiv_id":"1909.10244","last_updated":"2020-01-17T07:10:11Z","latest_version":2,"primary_category":"hep-ph","snapshot_observed_at":"2026-08-11T02:16:07.136537Z","submitted_at":"2019-09-23T09:35:48Z","title":"A subtraction scheme for massive QED"},"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":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"thesis":"As of 18 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:1909.10244."}