{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:SZ6TM4LQU7WJTBDPYVWZ4IOJAH","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":"51768f63d7923cb41266533022f0818d6a4ff7e6d17ca4a8b9264f0ce582ecf4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-01T20:44:37Z","title_canon_sha256":"cca9f24a8419c34d0aed09f3600065f5b412b650cf97035449a6a8516ad975aa"},"schema_version":"1.0","source":{"id":"astro-ph/0512039","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0512039","created_at":"2026-05-18T01:08:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0512039v1","created_at":"2026-05-18T01:08:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0512039","created_at":"2026-05-18T01:08:58Z"},{"alias_kind":"pith_short_12","alias_value":"SZ6TM4LQU7WJ","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"SZ6TM4LQU7WJTBDP","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"SZ6TM4LQ","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:32162f9ff841bf0dc631a94547a724576723a8c9ea6be4926bda5b0a91a23581","target":"graph","created_at":"2026-05-18T01:08:58Z","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":"Supernovae are essential to understanding the chemical evolution of the Universe. Type Ia supernovae also provide the most powerful observational tool currently available for studying the expansion history of the Universe and the nature of dark energy. Our basic knowledge of supernovae comes from the study of their photometric and spectroscopic properties. However, the presently available data sets of optical and near-infrared light curves of supernovae are rather small and/or heterogeneous, and employ photometric systems that are poorly characterized. Similarly, there are relatively few super","authors_text":"Alexei V. Filippenko, Barry F. Madore, Carlos Contreras, D. C. Murphy, Gast\\'on Folatelli, Jos\\'e Maza, Mario Hamuy, Mark M. Phillips, Miguel Roth, Nicholas B. Suntzeff, Nidia I. Morrell, P. A. Pinto, P. Wyatt, S. E. Persson, Sergio Gonzalez, Weidong Li, Wendy L. Freedman, Wojtek Krzeminski","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-12-01T20:44:37Z","title":"The Carnegie Supernova Project: The Low-Redshift Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512039","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":"sha256:4d5d854eff562ea315ba8f89561011bc93847571b8ea74aba86febf97808fd07","target":"record","created_at":"2026-05-18T01:08:58Z","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":"51768f63d7923cb41266533022f0818d6a4ff7e6d17ca4a8b9264f0ce582ecf4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-01T20:44:37Z","title_canon_sha256":"cca9f24a8419c34d0aed09f3600065f5b412b650cf97035449a6a8516ad975aa"},"schema_version":"1.0","source":{"id":"astro-ph/0512039","kind":"arxiv","version":1}},"canonical_sha256":"967d367170a7ec99846fc56d9e21c901d58b43aa65cbbfa8172ea9b43856efb1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"967d367170a7ec99846fc56d9e21c901d58b43aa65cbbfa8172ea9b43856efb1","first_computed_at":"2026-05-18T01:08:58.788168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:58.788168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T+rhciEA6aFSfCc5AHjWgs3fIW3CnGV3TlhiH5B2Eg7lHt4ZZW5e3TmbVqFX8ntvsdByM7b/MIIXRZ3kjJfZBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:58.788695Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0512039","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d5d854eff562ea315ba8f89561011bc93847571b8ea74aba86febf97808fd07","sha256:32162f9ff841bf0dc631a94547a724576723a8c9ea6be4926bda5b0a91a23581"],"state_sha256":"c6ceccf50099c0a4da4d1c05b03513bc4d9aed37f198e3707725bf61f50a9bed"}