{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:LQCR4BKUGP3EQKHKM3NN4IDSM5","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":"60e0bbbad20866c93a11bfb8169ecae941393086ddeead4ab39dbca594ac60f0","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-05-01T18:58:17Z","title_canon_sha256":"fb91ab0ce0a3c7312e5d46816fe6c27e22a3a6f6666cf0d280a15633daba36b7"},"schema_version":"1.0","source":{"id":"2505.00797","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.00797","created_at":"2026-07-05T10:57:39Z"},{"alias_kind":"arxiv_version","alias_value":"2505.00797v1","created_at":"2026-07-05T10:57:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.00797","created_at":"2026-07-05T10:57:39Z"},{"alias_kind":"pith_short_12","alias_value":"LQCR4BKUGP3E","created_at":"2026-07-05T10:57:39Z"},{"alias_kind":"pith_short_16","alias_value":"LQCR4BKUGP3EQKHK","created_at":"2026-07-05T10:57:39Z"},{"alias_kind":"pith_short_8","alias_value":"LQCR4BKU","created_at":"2026-07-05T10:57:39Z"}],"graph_snapshots":[{"event_id":"sha256:ccf3ac84d8d722298c3fe0c6a8bdd05be59330886a8db3c6ce18e8a5e05baa73","target":"graph","created_at":"2026-07-05T10:57:39Z","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/2505.00797/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pulsar Timing Arrays (PTAs) have recently found strong evidence for low-frequency gravitational waves (GWs) in the nanohertz frequency regime. As GWs pass, they produce deviations in measured lengths and light-travel times. PTA experiments utilize the highly-consistent radio bursts from millisecond pulsars, distributed throughout the local galaxy, to identify miniscule timing deviations indicative of GWs. To distinguish GWs from noise, PTAs search for a particular correlation pattern between different pulsars called Hellings & Downs correlations. The type of GW signal that has recently been id","authors_text":"Luke Zoltan Kelley","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-05-01T18:58:17Z","title":"Pulsar Timing Arrays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.00797","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":"sha256:095c8defce4149d45e43b3f08204b7d67e02aa8a8b1eea50c4cc39d08928855b","target":"record","created_at":"2026-07-05T10:57:39Z","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":"60e0bbbad20866c93a11bfb8169ecae941393086ddeead4ab39dbca594ac60f0","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-05-01T18:58:17Z","title_canon_sha256":"fb91ab0ce0a3c7312e5d46816fe6c27e22a3a6f6666cf0d280a15633daba36b7"},"schema_version":"1.0","source":{"id":"2505.00797","kind":"arxiv","version":1}},"canonical_sha256":"5c051e055433f64828ea66dade207267524663552a227dc86f07c1171e1fa84c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c051e055433f64828ea66dade207267524663552a227dc86f07c1171e1fa84c","first_computed_at":"2026-07-05T10:57:39.269412Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:57:39.269412Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"paLCw5asVPXaf5S3djfbIq5FIov+clYQxN3wmEur5qN1hBsE1+3xopJjj3ACYDXtxQAP+xXSWuqiZieBoYpiDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:57:39.269986Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.00797","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:095c8defce4149d45e43b3f08204b7d67e02aa8a8b1eea50c4cc39d08928855b","sha256:ccf3ac84d8d722298c3fe0c6a8bdd05be59330886a8db3c6ce18e8a5e05baa73"],"state_sha256":"a70847d9631d35b80d6396a2f094623319fddff248612d5f2f9ddd2e82311aa9"}