{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WK74ULC63VRT567DHDW6AUV247","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":"aa75156bbfb79ec453e0e3c12d4a7a6a15bdd78085b2b652639316cc8d7b5111","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-10T18:00:05Z","title_canon_sha256":"b4c66e15e27332868c7e6de73964846d4a3c44fa8ad14621b831fab065b55165"},"schema_version":"1.0","source":{"id":"2608.10077","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.10077","created_at":"2026-08-12T00:22:44Z"},{"alias_kind":"arxiv_version","alias_value":"2608.10077v1","created_at":"2026-08-12T00:22:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.10077","created_at":"2026-08-12T00:22:44Z"},{"alias_kind":"pith_short_12","alias_value":"WK74ULC63VRT","created_at":"2026-08-12T00:22:44Z"},{"alias_kind":"pith_short_16","alias_value":"WK74ULC63VRT567D","created_at":"2026-08-12T00:22:44Z"},{"alias_kind":"pith_short_8","alias_value":"WK74ULC6","created_at":"2026-08-12T00:22:44Z"}],"graph_snapshots":[{"event_id":"sha256:9d899cc5558d4dc8895d29b4a765560006509c644a42f5ad65cee0d7c9859883","target":"graph","created_at":"2026-08-12T00:22:44Z","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/2608.10077/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Empirical gyrochronology relies on co-eval stellar associations to map stellar rotation as a function of mass and age. The accuracy of its age predictions is therefore limited by the number and quality of benchmark rotation sequences. The well-characterized clusters NGC-6811 (t ~ 1 Gyr) and NGC-6819 (t ~ 2.5 Gyr) bracket an intermediate-age interval in which stellar spin-down remains poorly constrained due to lack of available rotation data. At t ~ 1.3 Gyr, NGC-752 provides a critical benchmark within this gap, but previous measurements could not define the G- and K-dwarf rotation sequence nee","authors_text":"Andrew W. Boyle, Andrew W. Mann","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-10T18:00:05Z","title":"Filling the Gap: Calibrating Gyrochronology at 1.3 Gyr with the Benchmark Cluster NGC-752"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.10077","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:f72562830df1d4b9bb9d2e6a4c42f3b7fbec094128b6d7b601adf9fdd133722d","target":"record","created_at":"2026-08-12T00:22:44Z","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":"aa75156bbfb79ec453e0e3c12d4a7a6a15bdd78085b2b652639316cc8d7b5111","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-10T18:00:05Z","title_canon_sha256":"b4c66e15e27332868c7e6de73964846d4a3c44fa8ad14621b831fab065b55165"},"schema_version":"1.0","source":{"id":"2608.10077","kind":"arxiv","version":1}},"canonical_sha256":"b2bfca2c5edd633efbe338ede052bae7f9db515a264c477d9177584f0298655c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2bfca2c5edd633efbe338ede052bae7f9db515a264c477d9177584f0298655c","first_computed_at":"2026-08-12T00:22:44.259466Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-12T00:22:44.259466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"18XCdhK+Y7KZo4QygIpRgB/uONYvzOlHHGfUnWi0hCWGYW0KLLsphyL/ZQdFqWrh+qfw3/ccjA0qV1dQXT4NDA==","signature_status":"signed_v1","signed_at":"2026-08-12T00:22:44.261105Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.10077","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f72562830df1d4b9bb9d2e6a4c42f3b7fbec094128b6d7b601adf9fdd133722d","sha256:9d899cc5558d4dc8895d29b4a765560006509c644a42f5ad65cee0d7c9859883"],"state_sha256":"f12d37ac99a674a1b23f5c96822c3a197dfa6e982bedccda79290811962abdb6"}