{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:SE5F2VHMWJR6PTCEQT2PVXJOSA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"65760b1d823b193082e7623f452b36add51c722b113d9f0b56fb1ff5991b51b7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-08-01T18:00:01Z","title_canon_sha256":"f91a2cfc34f58dce0ce5e24296e2d47ef43f7ba322f26abc67077ac47b7354f7"},"schema_version":"1.0","source":{"id":"2208.01045","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.01045","created_at":"2026-07-05T05:10:07Z"},{"alias_kind":"arxiv_version","alias_value":"2208.01045v1","created_at":"2026-07-05T05:10:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.01045","created_at":"2026-07-05T05:10:07Z"},{"alias_kind":"pith_short_12","alias_value":"SE5F2VHMWJR6","created_at":"2026-07-05T05:10:07Z"},{"alias_kind":"pith_short_16","alias_value":"SE5F2VHMWJR6PTCE","created_at":"2026-07-05T05:10:07Z"},{"alias_kind":"pith_short_8","alias_value":"SE5F2VHM","created_at":"2026-07-05T05:10:07Z"}],"graph_snapshots":[{"event_id":"sha256:cea2d95dd0b8474a1524f96f480930ad12ebc83fefaea137c9b0de7e2dd2d2ba","target":"graph","created_at":"2026-07-05T05:10:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2208.01045/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present HST photometry of 17 Cepheids in open clusters and their mean parallaxes from Gaia EDR3. These parallaxes are more precise than those from individual Cepheids (G<8 mag) previously used to measure the Hubble constant because they are derived from an average of >300 stars per cluster. Cluster parallaxes also have smaller systematic uncertainty because their stars lie in the range (G>13 mag) where the Gaia parallax calibration is most comprehensive. Cepheid photometry employed in the period--luminosity relation was measured using the same instrument(WFC3) and filters(F555W,F814W,F160W)","authors_text":"Adam G. Riess, Dan Scolnic, Louise Breuval, Lucas M.~Macri, Mauricio Cruz Reyes, Richard I. Anderson, Stefano Casertano, Tristan Cantat-Gaudin, Wenlong Yuan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-08-01T18:00:01Z","title":"Cluster Cepheids with High Precision Gaia Parallaxes, Low Zeropoint Uncertainties, and Hubble Space Telescope Photometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.01045","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:3c3ad75231e408fc50eeac5dbe21c1f53d2ac70ae85465a615b0547eda3f4606","target":"record","created_at":"2026-07-05T05:10:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"65760b1d823b193082e7623f452b36add51c722b113d9f0b56fb1ff5991b51b7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-08-01T18:00:01Z","title_canon_sha256":"f91a2cfc34f58dce0ce5e24296e2d47ef43f7ba322f26abc67077ac47b7354f7"},"schema_version":"1.0","source":{"id":"2208.01045","kind":"arxiv","version":1}},"canonical_sha256":"913a5d54ecb263e7cc4484f4fadd2e903ad3f809de38660256381b43833aa1f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"913a5d54ecb263e7cc4484f4fadd2e903ad3f809de38660256381b43833aa1f6","first_computed_at":"2026-07-05T05:10:07.613427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:10:07.613427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ga4Hkm3LUFvh2+528gW18Dw0Ogp2YP6oNJLA69dHdg84Pgl+PRlpUpC/qufeOOG/B1uS/zoacAFyDujZ1IolBA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:10:07.613872Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.01045","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c3ad75231e408fc50eeac5dbe21c1f53d2ac70ae85465a615b0547eda3f4606","sha256:cea2d95dd0b8474a1524f96f480930ad12ebc83fefaea137c9b0de7e2dd2d2ba"],"state_sha256":"03dbdef054f9785b106513e9b20c1f0d85776d07352352c76a8422ad7e32cf4e"}