{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:XM6HOXGXK45HTPRVOO4NEENIIB","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":"90073ad30ccf4a8d70a697295023e4e98916800956cf4411f8802a9bad0bf237","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-11T21:04:03Z","title_canon_sha256":"cd597349f592ec3c676514c49a819f4335a3da4fa9620fa410ae017921d3c0d2"},"schema_version":"1.0","source":{"id":"astro-ph/0403293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0403293","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0403293v1","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0403293","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"XM6HOXGXK45H","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"XM6HOXGXK45HTPRV","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"XM6HOXGX","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:1b54008272b16f0905fceacb92752022dc72030a3180294696e69ef30272c224","target":"graph","created_at":"2026-05-18T01:07:32Z","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 determination of the star-formation history of the Universe is a key goal of modern cosmology, as it is crucial to our understanding of how structure in the Universe forms and evolves. A picture has built up over recent years, piece-by-piece, by observing young stars in distant galaxies at different times in the past.\n These studies indicated that the stellar birthrate peaked some 8 billion years ago, and then declined by a factor of around ten to its present value. Here we report on a new study which obtains the complete star formation history by analysing the fossil record of the stellar","authors_text":"Alan Heavens, Benjamin Panter, James Dunlop, Raul Jimenez","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-03-11T21:04:03Z","title":"The Complete Star Formation History of the Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0403293","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:c4d9e90062f2466743e2bc63d3c1104675c1b34c9849959215cc9b51c842a075","target":"record","created_at":"2026-05-18T01:07:32Z","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":"90073ad30ccf4a8d70a697295023e4e98916800956cf4411f8802a9bad0bf237","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-11T21:04:03Z","title_canon_sha256":"cd597349f592ec3c676514c49a819f4335a3da4fa9620fa410ae017921d3c0d2"},"schema_version":"1.0","source":{"id":"astro-ph/0403293","kind":"arxiv","version":1}},"canonical_sha256":"bb3c775cd7573a79be3573b8d211a8407e99adc94acf73fcbbbfebaf7b7e5a15","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb3c775cd7573a79be3573b8d211a8407e99adc94acf73fcbbbfebaf7b7e5a15","first_computed_at":"2026-05-18T01:07:32.696503Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:32.696503Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4IK1gd8ZBTG91LqVwyH8WOOyhwkMuTLU3xbT4Hl3V4xX3HjJ4yrKpooSYhk6HCN3qjESLU2E//vVlaLqtl4xCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:32.697019Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0403293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4d9e90062f2466743e2bc63d3c1104675c1b34c9849959215cc9b51c842a075","sha256:1b54008272b16f0905fceacb92752022dc72030a3180294696e69ef30272c224"],"state_sha256":"992f865852d29345e6eb361ca958c7142334fd9e35dd5d35b5f8ea451eb8a210"}