{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:NFB4IPLK2IKRKZHAE3YUVDG4J5","short_pith_number":"pith:NFB4IPLK","schema_version":"1.0","canonical_sha256":"6943c43d6ad2151564e026f14a8cdc4f5f16340353e3d500c300fe0749eb74dc","source":{"kind":"arxiv","id":"0907.3526","version":1},"attestation_state":"computed","paper":{"title":"The Acceleration of the Expansion of the Universe: A Brief Early History of the Supernova Cosmology Project (SCP)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gerson Goldhaber","submitted_at":"2009-07-21T02:32:45Z","abstract_excerpt":"It is now about 10 years since the evidence, based on Type Ia supernovae, for the acceleration of the expansion of the Universe was discovered. I will discuss some aspects of the work and events in the Supernova Cosmology Project (SCP), during the period 1988 to 1998, which led to this discovery."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0907.3526","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-21T02:32:45Z","cross_cats_sorted":[],"title_canon_sha256":"0802d98412907aac90c764898488f89a88093b381f39a728b68668c80a8d0e11","abstract_canon_sha256":"6657b01fb678d2b61250a07c241dfa57bf6b4f398bca96036ff4de3a6b13b544"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:55.272899Z","signature_b64":"eF33533ipT7MRPTcFLC7RVtbCYVMe4vVnrAHXjw55Vc0lqukyCbCRx/3srBrjCE0+OHFF+3vK35JUqoLbGgWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6943c43d6ad2151564e026f14a8cdc4f5f16340353e3d500c300fe0749eb74dc","last_reissued_at":"2026-05-18T02:12:55.272239Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:55.272239Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Acceleration of the Expansion of the Universe: A Brief Early History of the Supernova Cosmology Project (SCP)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gerson Goldhaber","submitted_at":"2009-07-21T02:32:45Z","abstract_excerpt":"It is now about 10 years since the evidence, based on Type Ia supernovae, for the acceleration of the expansion of the Universe was discovered. I will discuss some aspects of the work and events in the Supernova Cosmology Project (SCP), during the period 1988 to 1998, which led to this discovery."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.3526","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"0907.3526","created_at":"2026-05-18T02:12:55.272338+00:00"},{"alias_kind":"arxiv_version","alias_value":"0907.3526v1","created_at":"2026-05-18T02:12:55.272338+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.3526","created_at":"2026-05-18T02:12:55.272338+00:00"},{"alias_kind":"pith_short_12","alias_value":"NFB4IPLK2IKR","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"NFB4IPLK2IKRKZHA","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"NFB4IPLK","created_at":"2026-05-18T12:26:00.592388+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5","json":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5.json","graph_json":"https://pith.science/api/pith-number/NFB4IPLK2IKRKZHAE3YUVDG4J5/graph.json","events_json":"https://pith.science/api/pith-number/NFB4IPLK2IKRKZHAE3YUVDG4J5/events.json","paper":"https://pith.science/paper/NFB4IPLK"},"agent_actions":{"view_html":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5","download_json":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5.json","view_paper":"https://pith.science/paper/NFB4IPLK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0907.3526&json=true","fetch_graph":"https://pith.science/api/pith-number/NFB4IPLK2IKRKZHAE3YUVDG4J5/graph.json","fetch_events":"https://pith.science/api/pith-number/NFB4IPLK2IKRKZHAE3YUVDG4J5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5/action/storage_attestation","attest_author":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5/action/author_attestation","sign_citation":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5/action/citation_signature","submit_replication":"https://pith.science/pith/NFB4IPLK2IKRKZHAE3YUVDG4J5/action/replication_record"}},"created_at":"2026-05-18T02:12:55.272338+00:00","updated_at":"2026-05-18T02:12:55.272338+00:00"}