{"as_of":"2026-08-12T05:11:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:df8496840329a0eb639e4732133fdd1260bae88bf095f4e38b28daeaa95a7ef5","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":7,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":7,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-11T06:34:44.6726+00:00","state":"measured"},{"denominator":7,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":7,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-11T05:16:45.932580Z","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":"2026-07-03T12:08:07.042900Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-08-11T05:16:45.932580Z","title":"Fuentes-Mart ´ ın, M","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2412.17802","last_updated":"2024-12-27T18:48:59Z","snapshot_observed_at":"2026-08-11T05:06:18.397748Z","submitted_at":"2024-12-23T18:58:09Z","title":"Feebly-Interacting Peccei-Quinn Model","version":2},"reference_index":72,"source":"pdf_text","source_observed_at":"2026-08-11T05:16:45.932580Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2412.17802"},"observation_digest":"sha256:4e74009147beb47bb5f71b9adf93cc08aea5cc12919767656a1344df120a18d3","observation_id":"87470c36-f598-4f84-9c45-5b7f77eae78c","resolution":{"observed_at":"2026-08-11T05:16:45.932580Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-08-07T15:17:29.292494Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case,","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2505.15884","last_updated":"2025-05-21T18:00:00Z","snapshot_observed_at":"2026-08-07T21:35:18.449473Z","submitted_at":"2025-05-21T18:00:00Z","title":"String Theory and Grand Unification Suggest a Sub-Microelectronvolt QCD Axion","version":1},"reference_index":177,"source":"pdf_text","source_observed_at":"2026-08-07T15:17:29.292494Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2505.15884"},"observation_digest":"sha256:83828ff2c5e08bab80efaf512ea4fadd488957e32a08766972e6ae01a85d5d32","observation_id":"0fe544b3-ee27-4ad1-b884-89d4014b2d96","resolution":{"observed_at":"2026-08-07T15:17:29.292494Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":"1907.02550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-07-03T12:08:07.042900Z","title":"Fuentes-Mart´ ın, M","venue":null,"work_id":"b2c8c753-5404-4c8e-b0cf-68e539560937","year":2019},"citing_paper":{"arxiv_id":"2604.08657","last_updated":"2026-04-09T18:00:02Z","snapshot_observed_at":"2026-08-11T00:28:48.129999Z","submitted_at":"2026-04-09T18:00:02Z","title":"How well can the QCD axion hide?","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-05-10T17:03:10.846811Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2604.08657"},"observation_digest":"sha256:2d6b5efc3d9e9f168d2079274ab878ab737c6e8cee981351a93193f9e9ebfeb9","observation_id":"dc7a6406-116e-472b-93e7-bd94f73a5629","resolution":{"observed_at":"2026-05-11T07:41:00.792809Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-11T06:34:44.6726+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":"1907.02550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-07-03T12:08:07.042900Z","title":"Fuentes-Mart´ ın, M","venue":null,"work_id":"b2c8c753-5404-4c8e-b0cf-68e539560937","year":2019},"citing_paper":{"arxiv_id":"2605.06787","last_updated":"2026-06-02T14:12:28Z","snapshot_observed_at":"2026-08-11T21:48:48.262327Z","submitted_at":"2026-05-07T18:00:05Z","title":"The structure of multi-axion solutions to the strong CP problem","version":1},"reference_index":61,"source":"pdf_text","source_observed_at":"2026-05-11T01:11:15.807017Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2605.06787"},"observation_digest":"sha256:280f28e37cda9b77e4e4e66104a7f01b8b208c072b5b6ab043818fb08e399e93","observation_id":"b1d9e26d-21bd-42e9-b799-9648d5bf8d05","resolution":{"observed_at":"2026-05-11T04:40:57.028919Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-11T06:34:44.6726+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":"1907.02550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-07-03T12:08:07.042900Z","title":"Fuentes-Mart´ ın, M","venue":null,"work_id":"b2c8c753-5404-4c8e-b0cf-68e539560937","year":2019},"citing_paper":{"arxiv_id":"2605.06787","last_updated":"2026-06-02T14:12:28Z","snapshot_observed_at":"2026-08-11T21:48:48.262327Z","submitted_at":"2026-05-07T18:00:05Z","title":"The structure of multi-axion solutions to the strong CP problem","version":2},"reference_index":61,"source":"pdf_text","source_observed_at":"2026-06-30T23:04:44.919157Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2605.06787"},"observation_digest":"sha256:55859b24adf9787638f677578380d0b0199bc09ecaa4a0aa30fa74dd166baa37","observation_id":"dcabf6c8-b7e7-495e-a36e-a4fbcefb896b","resolution":{"observed_at":"2026-06-30T23:05:07.010499Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-11T06:34:44.6726+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":"1907.02550","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-07-03T12:08:07.042900Z","title":"Fuentes-Mart´ ın, M","venue":null,"work_id":"b2c8c753-5404-4c8e-b0cf-68e539560937","year":2019},"citing_paper":{"arxiv_id":"2606.12298","last_updated":"2026-06-10T16:34:39Z","snapshot_observed_at":"2026-08-05T10:25:57.720609Z","submitted_at":"2026-06-10T16:34:39Z","title":"The KSVZ Atlas: A Unified SMEFT-ALP Framework","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-06-27T09:06:25.137078Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2606.12298"},"observation_digest":"sha256:37e48910cea983e6f832e741a72ac551614fe6b3f994229ce9a625a3126461e7","observation_id":"77af988e-f900-421c-943b-98dcb4565181","resolution":{"observed_at":"2026-07-03T12:08:07.044422Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-11T06:34:44.6726+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1907.02550","snapshot_observed_at":"2026-07-13T06:30:08.953970Z","title":"Fuentes-Mart´ ın, M","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2607.08814","last_updated":"2026-07-09T18:00:00Z","snapshot_observed_at":"2026-08-06T13:24:39.194051Z","submitted_at":"2026-07-09T18:00:00Z","title":"The Minimal High-Quality QCD Axion","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-07-13T06:30:08.953970Z"},"links":{"cited_paper":"/paper/1907.02550","citing_paper":"/paper/2607.08814"},"observation_digest":"sha256:fe76a1fd032815bc4decc51b18114281d6747dbe53be6fc493f56bd052783edc","observation_id":"d5d7c247-31ed-4434-8ce4-a081fccbcad0","resolution":{"observed_at":"2026-07-13T06:30:08.953970Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/1907.02550/citation-record","integrity":"/paper/1907.02550/integrity","json":"/paper/1907.02550/citation-record.json","paper":"/paper/1907.02550"},"outbound":[],"paper":{"arxiv_id":"1907.02550","last_updated":"2019-12-19T12:08:39Z","latest_version":3,"primary_category":"hep-ph","snapshot_observed_at":"2026-08-11T20:06:23.207995Z","submitted_at":"2019-07-04T18:09:38Z","title":"Strong CP problem with low-energy emergent QCD: The 4321 case"},"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":"2026-08-11T06:34:44.6726+00:00","source":"crossref"},{"observed_at":"2026-08-11T06:34:36.301508+00:00","source":"retraction_watch"}],"thesis":"As of 12 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 7 inbound Pith citation observations for arXiv:1907.02550."}