{"as_of":"2026-08-07T12:11:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:322152c6ad14323eead705c753639c9e43e3da5d8a1ce604a61521f940d21dc2","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":"2026-08-07T06:34:17.273281+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":"2026-08-01T23:57:13.056777Z","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":"2026-05-21T15:54:14.923406Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"2108.12891","last_updated":"2021-09-30T09:40:59Z","snapshot_observed_at":"2026-07-06T11:42:26.348134Z","submitted_at":"2021-08-29T18:26:57Z","title":"Precision measurement of the Lamb shift in Muonium","version":2},"cited_work":{"arxiv_id":"2108.12891","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2108.12891","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Ohayonet al.(Mu-MASS), Phys","venue":null,"work_id":"98e8038c-ae10-4be9-8172-4ac982dc586b","year":2022},"citing_paper":{"arxiv_id":"2601.15818","last_updated":"2026-05-15T13:05:55Z","snapshot_observed_at":"2026-08-02T11:58:19.747697Z","submitted_at":"2026-01-22T10:05:19Z","title":"Muon beams towards muonium physics: progress and prospects","version":3},"reference_index":226,"source":"pdf_text","source_observed_at":"2026-05-21T15:51:37.200105Z"},"links":{"cited_paper":"/paper/2108.12891","citing_paper":"/paper/2601.15818"},"observation_digest":"sha256:99c61dfbf9b13df3dd1f3afd7b1aa278e8be66c60e065c3eac0076a6ce0f304f","observation_id":"2672e0b4-1e01-4291-9ffb-8146e653e9cb","resolution":{"observed_at":"2026-05-21T15:54:14.924826Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2108.12891","last_updated":"2021-09-30T09:40:59Z","snapshot_observed_at":"2026-07-06T11:42:26.348134Z","submitted_at":"2021-08-29T18:26:57Z","title":"Precision measurement of the Lamb shift in Muonium","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2108.12891","snapshot_observed_at":"2026-08-01T23:57:13.056777Z","title":"Precision Measurement of the Lamb Shift in Muon ium,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2607.15188","last_updated":"2026-07-16T16:39:40Z","snapshot_observed_at":"2026-08-03T14:03:47.081096Z","submitted_at":"2026-07-16T16:39:40Z","title":"One more radiative-recoil correction to the Lamb shift in muonium","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-01T23:57:13.056777Z"},"links":{"cited_paper":"/paper/2108.12891","citing_paper":"/paper/2607.15188"},"observation_digest":"sha256:7d9a10d117216ab96004ab794549d501d4c659e0d4ce39734350b17664032d9f","observation_id":"ebe9b47d-f621-4a45-9435-6e0374e139dc","resolution":{"observed_at":"2026-08-01T23:57:13.056777Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/2108.12891/citation-record","integrity":"/paper/2108.12891/integrity","json":"/paper/2108.12891/citation-record.json","paper":"/paper/2108.12891"},"outbound":[],"paper":{"arxiv_id":"2108.12891","last_updated":"2021-09-30T09:40:59Z","latest_version":2,"primary_category":"physics.atom-ph","snapshot_observed_at":"2026-07-06T11:42:26.348134Z","submitted_at":"2021-08-29T18:26:57Z","title":"Precision measurement of the Lamb shift in Muonium"},"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":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"thesis":"As of 7 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:2108.12891."}