{"as_of":"2026-08-08T20:38:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:2e35772501a4fb38ae45980615beee7100032e7f90df41b838a9ba5ad9ff81af","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":"2026-08-08T06:32:00.761636+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":"2026-08-06T22:21:12.549931Z","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":"2026-08-06T22:21:17.748051Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1903.07007","last_updated":"2020-02-04T16:56:59Z","snapshot_observed_at":"2026-08-03T04:03:16.602876Z","submitted_at":"2019-03-17T00:27:49Z","title":"A quantum cellular automaton for one-dimensional QED","version":2},"cited_work":{"arxiv_id":"1903.07007","doi":null,"metadata_source":"pith","pith_arxiv_id":"1903.07007","snapshot_observed_at":"2026-08-06T22:21:17.748051Z","title":"A quantum cellular automaton for one-dimensional QED","venue":"quant-ph","work_id":"f64b7b63-15e9-4211-8e59-db488d813c31","year":2019},"citing_paper":{"arxiv_id":"2506.22219","last_updated":"2025-06-27T13:36:50Z","snapshot_observed_at":"2026-08-06T22:06:28.661361Z","submitted_at":"2025-06-27T13:36:50Z","title":"Causal Decompositions of 1D Quantum Cellular Automata","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-06T22:21:12.549931Z"},"links":{"cited_paper":"/paper/1903.07007","citing_paper":"/paper/2506.22219"},"observation_digest":"sha256:de92099900a18d88cb6bddfb1870a3b01e80ae306e6e81b0a78112c62c38d7e4","observation_id":"f7a78410-23a5-42ad-8e13-24691590d5d7","resolution":{"observed_at":"2026-08-06T22:21:17.822955Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-08T06:32:00.761636+00:00","source":"crossref"},{"observed_at":"2026-08-08T06:31:55.24221+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1903.07007","last_updated":"2020-02-04T16:56:59Z","snapshot_observed_at":"2026-08-03T04:03:16.602876Z","submitted_at":"2019-03-17T00:27:49Z","title":"A quantum cellular automaton for one-dimensional QED","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1903.07007","snapshot_observed_at":"2026-08-02T00:56:39.983837Z","title":"A quantum cellu- lar automaton for one-dimensional QED,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2607.14874","last_updated":"2026-07-16T11:45:23Z","snapshot_observed_at":"2026-08-08T09:04:32.041266Z","submitted_at":"2026-07-16T11:45:23Z","title":"Fermion-doubling problem in Chiral discretizations of Quantum field theory: Definitive proof, Fixing, and Computation of two-point correlation function","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-02T00:56:39.983837Z"},"links":{"cited_paper":"/paper/1903.07007","citing_paper":"/paper/2607.14874"},"observation_digest":"sha256:280e9a2eec09967a4f161b856bd4c61fcfa49f43c52cd0f55902c2b3d30bcbcb","observation_id":"9bf0c446-e044-4a18-8b48-cb5acb082065","resolution":{"observed_at":"2026-08-02T00:56:39.983837Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/1903.07007/citation-record","integrity":"/paper/1903.07007/integrity","json":"/paper/1903.07007/citation-record.json","paper":"/paper/1903.07007"},"outbound":[],"paper":{"arxiv_id":"1903.07007","last_updated":"2020-02-04T16:56:59Z","latest_version":2,"primary_category":"quant-ph","snapshot_observed_at":"2026-08-03T04:03:16.602876Z","submitted_at":"2019-03-17T00:27:49Z","title":"A quantum cellular automaton for one-dimensional 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":"2026-08-08T06:32:00.761636+00:00","source":"crossref"},{"observed_at":"2026-08-08T06:31:55.24221+00:00","source":"retraction_watch"}],"thesis":"As of 8 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:1903.07007."}