{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ODQJUGFI64DXTYKQMZ7SQPVJPG","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":"77ec37387e1666f231cdb213ea29ccfa02c75595ae106b8ff326579a2dc50a3c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-12T20:00:05Z","title_canon_sha256":"b9265bbd85b77b1a354720216690644ea0e1a1ae4e8eee360221b08167e75d81"},"schema_version":"1.0","source":{"id":"1203.2617","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.2617","created_at":"2026-05-18T01:58:09Z"},{"alias_kind":"arxiv_version","alias_value":"1203.2617v2","created_at":"2026-05-18T01:58:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2617","created_at":"2026-05-18T01:58:09Z"},{"alias_kind":"pith_short_12","alias_value":"ODQJUGFI64DX","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"ODQJUGFI64DXTYKQ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"ODQJUGFI","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:38fe7520320bc41a1a9da8a34ca6e9757b5f5cff275906ea669ff4b40b55a5cb","target":"graph","created_at":"2026-05-18T01:58:09Z","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":"Estimates of the mass of super-massive black holes (BHs) in distant active galactic nuclei (AGNs) can be obtained efficiently only through single-epoch spectra, using a combination of their broad emission-line widths and continuum luminosities. Yet the reliability and accuracy of the method, and the resulting mass estimates, M_BH, remain uncertain. A recent study by Croom using a sample of SDSS, 2QZ and 2SLAQ quasars suggests that line widths contribute little information about the BH mass in these single-epoch estimates and can be replaced by a constant value without significant loss of accur","authors_text":"B.M. Peterson, C.J. Grier, C.S. Kochanek, K.D. Denney, R.J. Assef, S. Frank","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-12T20:00:05Z","title":"The Importance of Broad Emission-Line Widths in Single Epoch Black Hole Mass Estimates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2617","kind":"arxiv","version":2},"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":"sha256:9b33f9c4d5ace17964c7740182210cbcb0ae5adb263fcb24438b9dad82b81ecd","target":"record","created_at":"2026-05-18T01:58:09Z","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":"77ec37387e1666f231cdb213ea29ccfa02c75595ae106b8ff326579a2dc50a3c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-12T20:00:05Z","title_canon_sha256":"b9265bbd85b77b1a354720216690644ea0e1a1ae4e8eee360221b08167e75d81"},"schema_version":"1.0","source":{"id":"1203.2617","kind":"arxiv","version":2}},"canonical_sha256":"70e09a18a8f70779e150667f283ea979bc0edee551962249ab3c3720b1c98450","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70e09a18a8f70779e150667f283ea979bc0edee551962249ab3c3720b1c98450","first_computed_at":"2026-05-18T01:58:09.742719Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:09.742719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V1ihk6Wx24ZrwzBuGPHeE083ceq7JDnhetrDqpv61z5yljQVEVPYFKtiwVIp6fCTESS/HWUzteXJhUy4AADQBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:09.743391Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.2617","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b33f9c4d5ace17964c7740182210cbcb0ae5adb263fcb24438b9dad82b81ecd","sha256:38fe7520320bc41a1a9da8a34ca6e9757b5f5cff275906ea669ff4b40b55a5cb"],"state_sha256":"3824ab77adc066b8fecc60ab27218ee3e876e3435a87f30b469a69f54b3b8a68"}