{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:YIFXPRSN7HQL2AF27UVU3VAN6Y","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":"f845b198820ae916e8b5deed4d9bd4359352fbee2fc869208cda42b66e410239","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-28T15:15:42Z","title_canon_sha256":"a14b0c80bbcc68bc313bc9308771ce5a58519229000b535b24cd98647e2d272f"},"schema_version":"1.0","source":{"id":"astro-ph/9809361","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9809361","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9809361v1","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9809361","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"YIFXPRSN7HQL","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_16","alias_value":"YIFXPRSN7HQL2AF2","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_8","alias_value":"YIFXPRSN","created_at":"2026-07-04T14:16:03Z"}],"graph_snapshots":[{"event_id":"sha256:033d76e4cf65581e02ba631ae6108524882e6eaf24142652426b323f19b0dd25","target":"graph","created_at":"2026-07-04T14:16:03Z","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/astro-ph/9809361/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The problem of measuring the solar age by means of helioseismology hasbeen recently revisited by Guenther & Demarque (1997) and by Weiss & Schlattl (1998). Different best values for $t_{\\rm seis}$ and different assessment of the uncertainty resulted from these two works. We show that depending on the way seismic data are used, one may obtain the value $t_{\\rm seis}\\approx 4.6$ Gy, close to the age of the oldest meteorites, $t_{\\rm met}=4.57$ Gy, like in the first paper, or above 5 Gy like in the second paper. The discrepancy in the seismic estimates of the solar age may be eliminated by assumi","authors_text":"B. Ricci, G. Fiorentini, R. Sienkiewicz, W.A. Dziembowski","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-09-28T15:15:42Z","title":"Helioseismology and the solar age"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9809361","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:cc2444bbc734e638f352238462e0266e07a43852e898b10872c3aee0a0dfd33d","target":"record","created_at":"2026-07-04T14:16:03Z","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":"f845b198820ae916e8b5deed4d9bd4359352fbee2fc869208cda42b66e410239","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-28T15:15:42Z","title_canon_sha256":"a14b0c80bbcc68bc313bc9308771ce5a58519229000b535b24cd98647e2d272f"},"schema_version":"1.0","source":{"id":"astro-ph/9809361","kind":"arxiv","version":1}},"canonical_sha256":"c20b77c64df9e0bd00bafd2b4dd40df60de0ff44a8e959f1f911de54f72634f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c20b77c64df9e0bd00bafd2b4dd40df60de0ff44a8e959f1f911de54f72634f1","first_computed_at":"2026-07-04T14:16:03.763027Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:16:03.763027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SIKU3ay9Vj3tJc8QFadshe88vakxTT9GryonQMZBok4PICwG4CxtLLHo+uNFTgFhr1B9Aeouikc5LcFfBk8GBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:16:03.763444Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9809361","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc2444bbc734e638f352238462e0266e07a43852e898b10872c3aee0a0dfd33d","sha256:033d76e4cf65581e02ba631ae6108524882e6eaf24142652426b323f19b0dd25"],"state_sha256":"8d40fecf5d610bc9f4f9695c11a7d82b14bac9332f0053137bb2cd996edc8201"}