{"as_of":"2026-08-21T18:41:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:d05cb9fba917f6e480d6a5858bde76d60e190ea2268f45d40a324223fe10e173","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":"2026-08-21T06:32:19.484+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":"2026-08-14T10:14:30.470814Z","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":"2026-08-14T10:14:30.699354Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1904.05665","last_updated":"2019-07-30T09:12:15Z","snapshot_observed_at":"2026-08-21T14:03:44.663693Z","submitted_at":"2019-04-11T12:41:14Z","title":"M87 black hole mass and spin estimate through the position of the jet boundary shape break","version":2},"cited_work":{"arxiv_id":"1904.05665","doi":null,"metadata_source":"pith","pith_arxiv_id":"1904.05665","snapshot_observed_at":"2026-08-14T10:14:30.699354Z","title":"M87 black hole mass and spin estimate through the position of the jet boundary shape break","venue":"astro-ph.HE","work_id":"abf68de7-3eae-4c88-899d-800cdc3bc2ce","year":2019},"citing_paper":{"arxiv_id":"1908.11794","last_updated":"2019-08-30T15:36:22Z","snapshot_observed_at":"2026-08-19T06:59:32.839016Z","submitted_at":"2019-08-30T15:36:22Z","title":"Testing the Schwarzschild metric in a strong field region with the Event Horizon Telescope","version":1},"reference_index":45,"source":"pdf_text","source_observed_at":"2026-08-14T10:14:30.470814Z"},"links":{"cited_paper":"/paper/1904.05665","citing_paper":"/paper/1908.11794"},"observation_digest":"sha256:51ffb25fa36eb9d3f7b650d1a5e7847aabb4a0619df9363003a102f664c9541e","observation_id":"ead9e795-d43d-4d6f-82de-0a5666ae90fb","resolution":{"observed_at":"2026-08-14T10:14:30.704463Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-21T06:32:19.484+00:00","source":"crossref"},{"observed_at":"2026-08-21T06:32:16.066871+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1904.05665/citation-record","integrity":"/paper/1904.05665/integrity","json":"/paper/1904.05665/citation-record.json","paper":"/paper/1904.05665"},"outbound":[],"paper":{"arxiv_id":"1904.05665","last_updated":"2019-07-30T09:12:15Z","latest_version":2,"primary_category":"astro-ph.HE","snapshot_observed_at":"2026-08-21T14:03:44.663693Z","submitted_at":"2019-04-11T12:41:14Z","title":"M87 black hole mass and spin estimate through the position of the jet boundary shape break"},"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":"2026-08-21T06:32:19.484+00:00","source":"crossref"},{"observed_at":"2026-08-21T06:32:16.066871+00:00","source":"retraction_watch"}],"thesis":"As of 21 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1904.05665."}