{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:PGE3H763QGS5HQXSWO34UGUXJV","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":"6c7c8ba2f1793a3b4d1076dfeaba28e20f3bd3ed812089bae1ef51996ab60054","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-09T19:00:19Z","title_canon_sha256":"99f0544bac7d366c88cb2348d23c6607961162f14b54731fe13b94fc64619769"},"schema_version":"1.0","source":{"id":"2412.06903","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.06903","created_at":"2026-07-05T11:37:12Z"},{"alias_kind":"arxiv_version","alias_value":"2412.06903v1","created_at":"2026-07-05T11:37:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.06903","created_at":"2026-07-05T11:37:12Z"},{"alias_kind":"pith_short_12","alias_value":"PGE3H763QGS5","created_at":"2026-07-05T11:37:12Z"},{"alias_kind":"pith_short_16","alias_value":"PGE3H763QGS5HQXS","created_at":"2026-07-05T11:37:12Z"},{"alias_kind":"pith_short_8","alias_value":"PGE3H763","created_at":"2026-07-05T11:37:12Z"}],"graph_snapshots":[{"event_id":"sha256:c2875f522b7fb17d7ce24152498441bb4f6872859c5de83021ba79f731225992","target":"graph","created_at":"2026-07-05T11:37:12Z","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/2412.06903/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Determining reliable ages for old stellar objects at different redshifts offers a powerful means to constrain cosmology without relying on a specific cosmological model: this is known as the cosmic clocks method. Globular clusters (GCs), long recognised as hosts of the Universe's oldest stars, have served as the archetypical cosmic clocks. However, their age estimates have traditionally been confined to redshift z=0, limiting their role to constraining the present-day age of the Universe. Here we explore how to measure reliable ages of GCs well beyond $z=0$, leveraging their potential to exten","authors_text":"Andrea Cimatti, Carmela Lardo, Elena Tomasetti, Fr\\'ed\\'eric Courbin, Licia Verde, Martin Millon, Michele Moresco, Raul Jimenez","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-09T19:00:19Z","title":"Time to Sparkler. Accurate ages of lensed globular clusters at $z=1.4$ with JWST photometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.06903","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":"sha256:6f5bdad32c5c0258061cc66639bf11eb34db41a43edafe4f33db576a70291f5f","target":"record","created_at":"2026-07-05T11:37:12Z","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":"6c7c8ba2f1793a3b4d1076dfeaba28e20f3bd3ed812089bae1ef51996ab60054","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-09T19:00:19Z","title_canon_sha256":"99f0544bac7d366c88cb2348d23c6607961162f14b54731fe13b94fc64619769"},"schema_version":"1.0","source":{"id":"2412.06903","kind":"arxiv","version":1}},"canonical_sha256":"7989b3ffdb81a5d3c2f2b3b7ca1a974d5b4d5c10e996d68e90cddc8a123170e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7989b3ffdb81a5d3c2f2b3b7ca1a974d5b4d5c10e996d68e90cddc8a123170e9","first_computed_at":"2026-07-05T11:37:12.887495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:37:12.887495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tubDhpegcdfZ+RPH8XOZmC4XLjgBI1uT7xsDKCdqlxP50JSI8rKcTkoW+6zcs3L/NncL9eFsoF9+hcdjr+DYCg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:37:12.887958Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.06903","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f5bdad32c5c0258061cc66639bf11eb34db41a43edafe4f33db576a70291f5f","sha256:c2875f522b7fb17d7ce24152498441bb4f6872859c5de83021ba79f731225992"],"state_sha256":"895fd1420baefcca29300d2f6c473625d899c7710b845bc0adfd5a637cf7f9b2"}