{"as_of":"2026-08-16T16:13:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:4edf8e836ea7b1e9494fec38728c8306effeb1de8de7d3d2e03c2c9fde8cab15","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":"2026-08-16T06:30:59.297886+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":"2026-08-14T11:53:25.552086Z","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":"2026-07-01T16:15:49.919368Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1902.04550","last_updated":"2020-01-17T20:39:14Z","snapshot_observed_at":"2026-08-16T03:01:05.594819Z","submitted_at":"2019-02-12T18:49:04Z","title":"A nontrivial footprint of standard cosmology in the future observations of low-frequency gravitational waves","version":4},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1902.04550","snapshot_observed_at":"2026-08-14T11:53:25.552086Z","title":"Alfaro and M","venue":null,"work_id":null,"year":1902},"citing_paper":{"arxiv_id":"1908.08472","last_updated":"2020-04-15T14:39:51Z","snapshot_observed_at":"2026-08-16T12:11:13.189265Z","submitted_at":"2019-08-22T16:09:19Z","title":"Measuring $H_0$ with pulsar timing arrays","version":2},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-14T11:53:25.552086Z"},"links":{"cited_paper":"/paper/1902.04550","citing_paper":"/paper/1908.08472"},"observation_digest":"sha256:68e396efeef439fa957803bc299fbe79072eed6a9ff5f27ee2c7756fd805f648","observation_id":"df628d4c-cd60-44e5-bb69-6b2b05468fc8","resolution":{"observed_at":"2026-08-14T11:53:25.552086Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1902.04550","last_updated":"2020-01-17T20:39:14Z","snapshot_observed_at":"2026-08-16T03:01:05.594819Z","submitted_at":"2019-02-12T18:49:04Z","title":"A nontrivial footprint of standard cosmology in the future observations of low-frequency gravitational waves","version":4},"cited_work":{"arxiv_id":"1902.04550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1902.04550","snapshot_observed_at":"2026-07-01T16:15:49.919368Z","title":null,"venue":null,"work_id":"9a0884b5-4ab4-45bd-9353-8af23a33ba39","year":1902},"citing_paper":{"arxiv_id":"2606.28554","last_updated":"2026-06-26T19:14:32Z","snapshot_observed_at":"2026-08-15T09:09:50.839137Z","submitted_at":"2026-06-26T19:14:32Z","title":"The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses","version":1},"reference_index":215,"source":"arxiv_source","source_observed_at":"2026-06-30T00:43:09.947073Z"},"links":{"cited_paper":"/paper/1902.04550","citing_paper":"/paper/2606.28554"},"observation_digest":"sha256:741156e1c8a2d549cdbef3d6e96f5597a16d69d698213cef181f7ee127bdab31","observation_id":"986287f6-22c7-4f83-a66b-fbbdac2d86ca","resolution":{"observed_at":"2026-07-01T16:15:49.920663Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1902.04550","last_updated":"2020-01-17T20:39:14Z","snapshot_observed_at":"2026-08-16T03:01:05.594819Z","submitted_at":"2019-02-12T18:49:04Z","title":"A nontrivial footprint of standard cosmology in the future observations of low-frequency gravitational waves","version":4},"cited_work":{"arxiv_id":"1902.04550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1902.04550","snapshot_observed_at":"2026-07-01T16:15:49.919368Z","title":null,"venue":null,"work_id":"9a0884b5-4ab4-45bd-9353-8af23a33ba39","year":1902},"citing_paper":{"arxiv_id":"2606.28571","last_updated":"2026-06-26T19:54:57Z","snapshot_observed_at":"2026-08-05T22:47:59.828621Z","submitted_at":"2026-06-26T19:54:57Z","title":"The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models","version":1},"reference_index":224,"source":"arxiv_source","source_observed_at":"2026-06-30T01:20:21.581469Z"},"links":{"cited_paper":"/paper/1902.04550","citing_paper":"/paper/2606.28571"},"observation_digest":"sha256:1d706da1858e7e0505b0d8d08baa427d036bee3c6aaa950048b9d82ea5bc72c9","observation_id":"f5791f06-e557-4428-b8cd-56b63ba08342","resolution":{"observed_at":"2026-07-01T15:35:48.401997Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1902.04550/citation-record","integrity":"/paper/1902.04550/integrity","json":"/paper/1902.04550/citation-record.json","paper":"/paper/1902.04550"},"outbound":[],"paper":{"arxiv_id":"1902.04550","last_updated":"2020-01-17T20:39:14Z","latest_version":4,"primary_category":"astro-ph.CO","snapshot_observed_at":"2026-08-16T03:01:05.594819Z","submitted_at":"2019-02-12T18:49:04Z","title":"A nontrivial footprint of standard cosmology in the future observations of low-frequency gravitational waves"},"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":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"thesis":"As of 16 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 3 inbound Pith citation observations for arXiv:1902.04550."}