{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:532ELAUCS6JAO6AXYMBAYOCMEW","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":"7eeadd4fa63b0f34d98d0181340d58137ca400ddb2a8b4e93a5225cc8f4c826a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-22T09:12:16Z","title_canon_sha256":"f27a691af28ae542226ea443175acd1035dd042072f92ddc0fa5cffa072987ae"},"schema_version":"1.0","source":{"id":"1202.4864","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4864","created_at":"2026-05-18T03:21:45Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4864v1","created_at":"2026-05-18T03:21:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4864","created_at":"2026-05-18T03:21:45Z"},{"alias_kind":"pith_short_12","alias_value":"532ELAUCS6JA","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"532ELAUCS6JAO6AX","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"532ELAUC","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:d0fa6a2aabe22f45ba04a647c580ed88f35b36ef20e27dc66275001d362e1dfb","target":"graph","created_at":"2026-05-18T03:21:45Z","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"},"paper":{"abstract_excerpt":"The last decade showed an impressive observational effort from the photometric and spectroscopic point of view for ancient stellar clusters in our Galaxy and beyond. The theoretical interpretation of these new observational results requires updated evolutionary models and isochrones spanning a wide range of chemical composition. With this aim we built the new \"Pisa Stellar Evolution Database\" of stellar models and isochrones by adopting a well-tested evolutionary code (FRANEC) implemented with updated physical and chemical inputs. In particular, our code adopts realistic atmosphere models and ","authors_text":"G. Valle, M. Dell'Omodarme, P. G. Prada Moroni, S. Degl'Innocenti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-22T09:12:16Z","title":"The Pisa Stellar Evolution Data Base for low-mass stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4864","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:f28cdcb1f2fdd3c4d5ad3131b807c77a0ed6f6346e1eb463299069764f7afeb3","target":"record","created_at":"2026-05-18T03:21:45Z","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":"7eeadd4fa63b0f34d98d0181340d58137ca400ddb2a8b4e93a5225cc8f4c826a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-22T09:12:16Z","title_canon_sha256":"f27a691af28ae542226ea443175acd1035dd042072f92ddc0fa5cffa072987ae"},"schema_version":"1.0","source":{"id":"1202.4864","kind":"arxiv","version":1}},"canonical_sha256":"eef44582829792077817c3020c384c25b9f12973f1212c2c8cae03f9b8b8f679","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eef44582829792077817c3020c384c25b9f12973f1212c2c8cae03f9b8b8f679","first_computed_at":"2026-05-18T03:21:45.726214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:45.726214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QGK5/DeMClrNq0/kFtySNevz8KAP93G5Qng4+hMMrIBHWGk8x/a/F50ywFtDYhPrJd4pbA8o6pdrGMOw6hFTCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:45.726701Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4864","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f28cdcb1f2fdd3c4d5ad3131b807c77a0ed6f6346e1eb463299069764f7afeb3","sha256:d0fa6a2aabe22f45ba04a647c580ed88f35b36ef20e27dc66275001d362e1dfb"],"state_sha256":"3de7fa0ebf6fea7b3420942d32354e1dfd9517a602cfaf71feb0bb634f1b9793"}