{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KQ3TV4SBZASZ2XTCCA5ARXNGFS","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":"5a364660cab551e6f274ae8a39db50acad15f17fe5387a33fd8609d7fc6bc0c5","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-08T18:57:55Z","title_canon_sha256":"fbc6eb2e36cdb1dbca604a13bdac62e5d09bd954e855536169cbc8ed285e7d84"},"schema_version":"1.0","source":{"id":"1409.2462","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2462","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2462v1","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2462","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"pith_short_12","alias_value":"KQ3TV4SBZASZ","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KQ3TV4SBZASZ2XTC","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KQ3TV4SB","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:90cd7b971936e6a45b4cd50a1885aea56cfcfe4e8adfeb54ac3b3d5cc177489b","target":"graph","created_at":"2026-05-18T01:42:06Z","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":"Recent observations in the total luminosity density have led to significant progress in establishing the star formation rate (SFR) at high redshift. Concurrently observed gamma-ray burst rates have also been used to extract the SFR at high redshift. The SFR in turn can be used to make a host of predictions concerning the ionization history of the Universe, the chemical abundances, and supernova rates. We compare the predictions made using a hierarchical model of cosmic chemical evolution based on three recently proposed SFRs: two based on extracting the SFR from the observed gamma-ray burst ra","authors_text":"E. Vangioni, J. Silk, K.A. Olive, P. Petitjean, T. Prestegard, V. Mandic","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-08T18:57:55Z","title":"The Impact of Star Formation and Gamma-Ray Burst Rates at High Redshift on Cosmic Chemical Evolution and Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2462","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:b89ec6d8fb70a47db630b26c25d15fdd376a5cf18e985fd7451193dc4f3ceed9","target":"record","created_at":"2026-05-18T01:42:06Z","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":"5a364660cab551e6f274ae8a39db50acad15f17fe5387a33fd8609d7fc6bc0c5","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-08T18:57:55Z","title_canon_sha256":"fbc6eb2e36cdb1dbca604a13bdac62e5d09bd954e855536169cbc8ed285e7d84"},"schema_version":"1.0","source":{"id":"1409.2462","kind":"arxiv","version":1}},"canonical_sha256":"54373af241c8259d5e62103a08dda62ca2c4c9762c951c7e8288e2bdeed97156","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54373af241c8259d5e62103a08dda62ca2c4c9762c951c7e8288e2bdeed97156","first_computed_at":"2026-05-18T01:42:06.546529Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:06.546529Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TAOd/KDwaptENhg3snv9qX2CV82SM3H8xA6wwtifdRc+ube0RsaJFp5sJyocn+VBdDyPLCGCr1X0UP6uX/CWBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:06.547238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.2462","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b89ec6d8fb70a47db630b26c25d15fdd376a5cf18e985fd7451193dc4f3ceed9","sha256:90cd7b971936e6a45b4cd50a1885aea56cfcfe4e8adfeb54ac3b3d5cc177489b"],"state_sha256":"65ac8f4acd9dbc233cd6131a92e690b1410599b6f2bbe4cd9fb9b13951a5ca97"}