{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:XSYWXDKTPATHESCMXQKFLWAYDH","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":"405d406a5eaff17512ee849bd4222d11ac9f981e51b94cbad23fb2cdd122e642","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-13T20:58:07Z","title_canon_sha256":"f781b6c9f70d971eb942937794600be9d5921c9241e8b34b9f5b804b2a6aa0c5"},"schema_version":"1.0","source":{"id":"astro-ph/9502067","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9502067","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502067v1","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502067","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"XSYWXDKTPATH","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"XSYWXDKTPATHESCM","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"XSYWXDKT","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:8261f80696ed5774b737174ba9fc9109703f5fef57bd5a49d13be03046d02f94","target":"graph","created_at":"2026-05-18T01:07:42Z","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 primordial abundances of deuterium and of helium-3, produced during big bang nucleosynthesis, depend sensitively on the baryon density. Thus, the observed abundances of D and \\he may provide useful ``baryometers'' provided the evolution from primordial to present (or, presolar nebula) abundances is understood. Inevitably, the derivation of primordial from observed abundances requires the intervention of a model for galactic evolution and, so, the inferred primordial abundances are, necessarily, model dependent. Here, an analytic framework for the evolution of D and \\he is presented which i","authors_text":"Gary Steigman, Monica Tosi","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-02-13T20:58:07Z","title":"Generic Evolution Of Deuterium And Helium-3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502067","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":"sha256:5a19d46386b360bc55b9b56279fb9ebf2b6ec18400e72160076cd75b79a8df79","target":"record","created_at":"2026-05-18T01:07:42Z","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":"405d406a5eaff17512ee849bd4222d11ac9f981e51b94cbad23fb2cdd122e642","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-13T20:58:07Z","title_canon_sha256":"f781b6c9f70d971eb942937794600be9d5921c9241e8b34b9f5b804b2a6aa0c5"},"schema_version":"1.0","source":{"id":"astro-ph/9502067","kind":"arxiv","version":1}},"canonical_sha256":"bcb16b8d53782672484cbc1455d81819ce714db971a9d824877980f7f9daf5a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcb16b8d53782672484cbc1455d81819ce714db971a9d824877980f7f9daf5a3","first_computed_at":"2026-05-18T01:07:42.205938Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:42.205938Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Knocz9e93uemIfvR9uHwZwCRxiyPhuQFJV4fu3vK5sbe6EEVoPVTxzv3UMN/uxuX41/cFG/J0ktzgCFsTIYDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:42.206408Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9502067","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a19d46386b360bc55b9b56279fb9ebf2b6ec18400e72160076cd75b79a8df79","sha256:8261f80696ed5774b737174ba9fc9109703f5fef57bd5a49d13be03046d02f94"],"state_sha256":"391a61df9393cc9bc46f51a9b2acb94547c9999a7cf040bddd3b26deef003e0b"}