{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2GGRALUFMXQ2EGOJ4LPWSTTNAJ","short_pith_number":"pith:2GGRALUF","canonical_record":{"source":{"id":"1205.3224","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T00:18:09Z","cross_cats_sorted":[],"title_canon_sha256":"bb19234973d09540156802ce751cf66d0558394b862b077fde4d18a6d66004e1","abstract_canon_sha256":"e109a1b14df2f52e9171a2fe0a96474abef952deef3600fe85b8bd748eb7d3cd"},"schema_version":"1.0"},"canonical_sha256":"d18d102e8565e1a219c9e2df694e6d026056a042f3353382e1bc410794cd222d","source":{"kind":"arxiv","id":"1205.3224","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3224","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3224v1","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3224","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"pith_short_12","alias_value":"2GGRALUFMXQ2","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2GGRALUFMXQ2EGOJ","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2GGRALUF","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2GGRALUFMXQ2EGOJ4LPWSTTNAJ","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3224","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T00:18:09Z","cross_cats_sorted":[],"title_canon_sha256":"bb19234973d09540156802ce751cf66d0558394b862b077fde4d18a6d66004e1","abstract_canon_sha256":"e109a1b14df2f52e9171a2fe0a96474abef952deef3600fe85b8bd748eb7d3cd"},"schema_version":"1.0"},"canonical_sha256":"d18d102e8565e1a219c9e2df694e6d026056a042f3353382e1bc410794cd222d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:32.207986Z","signature_b64":"X2we78HzIOPHgQznZ0ikeuIemWY4SpT7BMUSdAbMko7wZn25aI3umE2/MwN5t6ou4n1Lxmr9mPxJbCFwv0pbBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d18d102e8565e1a219c9e2df694e6d026056a042f3353382e1bc410794cd222d","last_reissued_at":"2026-05-18T01:57:32.207297Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:32.207297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3224","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7K6ueTUZQIYcygq9JrcR7iAqP5FiHCnDaLttRCbGqCugDvVua4k0YTCtVW2n+1TzoHhP5GK2u6kDxTDi8Ib1Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:16:15.657364Z"},"content_sha256":"58bf65f02ef2b0dc7ceb5ad97c83a2141effff9210efb398812be15856c665c6","schema_version":"1.0","event_id":"sha256:58bf65f02ef2b0dc7ceb5ad97c83a2141effff9210efb398812be15856c665c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2GGRALUFMXQ2EGOJ4LPWSTTNAJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous Ultraviolet and Optical Emission-line Profiles of Quasars: Implications for Black Hole Mass Determination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gabriele Ponti, Jenny E. Greene, Luis C. Ho, Paolo Goldoni, Xiao-Bo Dong","submitted_at":"2012-05-15T00:18:09Z","abstract_excerpt":"The X-shooter instrument on the VLT was used to obtain spectra of seven moderate-redshift quasars simultaneously covering the spectral range 3000 Ang to 2.5 microns. At z ~ 1.5, most of the prominent broad emission lines in the ultraviolet to optical region are captured in their rest frame. We use this unique dataset, which mitigates complications from source variability, to intercompare the line profiles of C IV 1549, C III] 1909, Mg II 2800, and Halpha and evaluate their implications for black hole mass estimation. We confirm that Mg II and the Balmer lines share similar kinematics and that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3224","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ljZpODIujU1FsQisKZWHmA6Y0YjHhddn+8z/xs4E9OsD9TPXw3j+Y9kbhOuxN5OFErmbjbz/OajBtvVl8NxwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:16:15.657779Z"},"content_sha256":"88e49c411c960319371f2ee461e74fb515b26c8e836d584181f38908ef49c7a2","schema_version":"1.0","event_id":"sha256:88e49c411c960319371f2ee461e74fb515b26c8e836d584181f38908ef49c7a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/bundle.json","state_url":"https://pith.science/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T21:16:15Z","links":{"resolver":"https://pith.science/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ","bundle":"https://pith.science/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/bundle.json","state":"https://pith.science/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2GGRALUFMXQ2EGOJ4LPWSTTNAJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2GGRALUFMXQ2EGOJ4LPWSTTNAJ","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":"e109a1b14df2f52e9171a2fe0a96474abef952deef3600fe85b8bd748eb7d3cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T00:18:09Z","title_canon_sha256":"bb19234973d09540156802ce751cf66d0558394b862b077fde4d18a6d66004e1"},"schema_version":"1.0","source":{"id":"1205.3224","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3224","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3224v1","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3224","created_at":"2026-05-18T01:57:32Z"},{"alias_kind":"pith_short_12","alias_value":"2GGRALUFMXQ2","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2GGRALUFMXQ2EGOJ","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2GGRALUF","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:88e49c411c960319371f2ee461e74fb515b26c8e836d584181f38908ef49c7a2","target":"graph","created_at":"2026-05-18T01:57:32Z","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 X-shooter instrument on the VLT was used to obtain spectra of seven moderate-redshift quasars simultaneously covering the spectral range 3000 Ang to 2.5 microns. At z ~ 1.5, most of the prominent broad emission lines in the ultraviolet to optical region are captured in their rest frame. We use this unique dataset, which mitigates complications from source variability, to intercompare the line profiles of C IV 1549, C III] 1909, Mg II 2800, and Halpha and evaluate their implications for black hole mass estimation. We confirm that Mg II and the Balmer lines share similar kinematics and that ","authors_text":"Gabriele Ponti, Jenny E. Greene, Luis C. Ho, Paolo Goldoni, Xiao-Bo Dong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T00:18:09Z","title":"Simultaneous Ultraviolet and Optical Emission-line Profiles of Quasars: Implications for Black Hole Mass Determination"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3224","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":"sha256:58bf65f02ef2b0dc7ceb5ad97c83a2141effff9210efb398812be15856c665c6","target":"record","created_at":"2026-05-18T01:57:32Z","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":"e109a1b14df2f52e9171a2fe0a96474abef952deef3600fe85b8bd748eb7d3cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T00:18:09Z","title_canon_sha256":"bb19234973d09540156802ce751cf66d0558394b862b077fde4d18a6d66004e1"},"schema_version":"1.0","source":{"id":"1205.3224","kind":"arxiv","version":1}},"canonical_sha256":"d18d102e8565e1a219c9e2df694e6d026056a042f3353382e1bc410794cd222d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d18d102e8565e1a219c9e2df694e6d026056a042f3353382e1bc410794cd222d","first_computed_at":"2026-05-18T01:57:32.207297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:32.207297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X2we78HzIOPHgQznZ0ikeuIemWY4SpT7BMUSdAbMko7wZn25aI3umE2/MwN5t6ou4n1Lxmr9mPxJbCFwv0pbBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:32.207986Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3224","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58bf65f02ef2b0dc7ceb5ad97c83a2141effff9210efb398812be15856c665c6","sha256:88e49c411c960319371f2ee461e74fb515b26c8e836d584181f38908ef49c7a2"],"state_sha256":"e5e7d969a5ebffc0eeed68dbc8d47ef4f39e3ab2d9036c09ba53669058542dea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D0qaSMjeVS5rb3t2+6etEsiSy7Ksx645nR3FArKaYRY8FBioORZHk/knapecS32OL5hMEqqDWe8Yla4rFcPoCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T21:16:15.660343Z","bundle_sha256":"be772b3948dfeecf363ef3db11b368c933341cebfc05b155675e611077141dfa"}}