{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:OSNTVWSNQTE76Q3HY6ETFRMHJ6","short_pith_number":"pith:OSNTVWSN","canonical_record":{"source":{"id":"1011.1268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-04T21:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"06fa64957e999982d57ebc9c9e663edfc8abd7c7f67506265d808149648b3fe3","abstract_canon_sha256":"8a7188037b49acaa5e51e985554a08f09705140badca97da9470ef46a5d033bb"},"schema_version":"1.0"},"canonical_sha256":"749b3ada4d84c9ff4367c78932c5874fb2dfcbf729277482e740d26adea1d84d","source":{"kind":"arxiv","id":"1011.1268","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.1268","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"1011.1268v2","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.1268","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"OSNTVWSNQTE7","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"OSNTVWSNQTE76Q3H","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"OSNTVWSN","created_at":"2026-05-18T12:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:OSNTVWSNQTE76Q3HY6ETFRMHJ6","target":"record","payload":{"canonical_record":{"source":{"id":"1011.1268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-04T21:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"06fa64957e999982d57ebc9c9e663edfc8abd7c7f67506265d808149648b3fe3","abstract_canon_sha256":"8a7188037b49acaa5e51e985554a08f09705140badca97da9470ef46a5d033bb"},"schema_version":"1.0"},"canonical_sha256":"749b3ada4d84c9ff4367c78932c5874fb2dfcbf729277482e740d26adea1d84d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:52.728904Z","signature_b64":"wID/8nHg+GnR2TLJqP6eG1HT7/6cPC8bq6vO/k6wO46r8ozGyMx3S7AyLKJq3U/amt4v8okc46QSTu/fzKMuCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"749b3ada4d84c9ff4367c78932c5874fb2dfcbf729277482e740d26adea1d84d","last_reissued_at":"2026-05-18T02:04:52.728469Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:52.728469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.1268","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tSRXiZXZjRUjX8AvVdQDQfmaFMGXOjFVqbS2lsQjYqbkU14Wcve+vJ1wfl/Y1d9tYOQ1Crs4cxMaBsCaWWsjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:57:20.131423Z"},"content_sha256":"6c8e4b032601f171db9de5e8f2b77c2d1d090fc05dbb07e583904aaa1274f23b","schema_version":"1.0","event_id":"sha256:6c8e4b032601f171db9de5e8f2b77c2d1d090fc05dbb07e583904aaa1274f23b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:OSNTVWSNQTE76Q3HY6ETFRMHJ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Biases in the Quasar Mass-Luminosity Plane","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alireza Rafiee, Patrick B. Hall","submitted_at":"2010-11-04T21:13:07Z","abstract_excerpt":"We find that the recently reported departure from the Eddington luminosity limit for the highest quasar black hole masses at a given redshift is an artifact due to biases in black hole mass measurements. This sub-Eddington boundary (with non-unity slope) in the quasar mass-luminosity plane was initially reported by Steinhardt & Elvis (2010a) using the FWHM-based black hole mass catalogue of Shen et al. (2008). However, the significance of the boundary is reduced when the FWHM-based mass-scaling relationship is recalibrated following Wang et al. (2009) and using the most updated reverberation m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.1268","kind":"arxiv","version":2},"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":"2026-05-18T02:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7wJ6haDJPwW7q32uU5r/6AI1Zpbcv9Cuo5+aAH2f2bbrT8avwyIm+8adI/+drIMvq0oMP4Pfl/rMzVuUzbhkBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:57:20.132043Z"},"content_sha256":"5c4df343444d85afcf756541738bab04ffecb9fa395c5e18522ce2e676678307","schema_version":"1.0","event_id":"sha256:5c4df343444d85afcf756541738bab04ffecb9fa395c5e18522ce2e676678307"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/bundle.json","state_url":"https://pith.science/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/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":"2026-06-02T02:57:20Z","links":{"resolver":"https://pith.science/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6","bundle":"https://pith.science/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/bundle.json","state":"https://pith.science/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OSNTVWSNQTE76Q3HY6ETFRMHJ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:OSNTVWSNQTE76Q3HY6ETFRMHJ6","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":"8a7188037b49acaa5e51e985554a08f09705140badca97da9470ef46a5d033bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-04T21:13:07Z","title_canon_sha256":"06fa64957e999982d57ebc9c9e663edfc8abd7c7f67506265d808149648b3fe3"},"schema_version":"1.0","source":{"id":"1011.1268","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.1268","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"1011.1268v2","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.1268","created_at":"2026-05-18T02:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"OSNTVWSNQTE7","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"OSNTVWSNQTE76Q3H","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"OSNTVWSN","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:5c4df343444d85afcf756541738bab04ffecb9fa395c5e18522ce2e676678307","target":"graph","created_at":"2026-05-18T02:04:52Z","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":"We find that the recently reported departure from the Eddington luminosity limit for the highest quasar black hole masses at a given redshift is an artifact due to biases in black hole mass measurements. This sub-Eddington boundary (with non-unity slope) in the quasar mass-luminosity plane was initially reported by Steinhardt & Elvis (2010a) using the FWHM-based black hole mass catalogue of Shen et al. (2008). However, the significance of the boundary is reduced when the FWHM-based mass-scaling relationship is recalibrated following Wang et al. (2009) and using the most updated reverberation m","authors_text":"Alireza Rafiee, Patrick B. Hall","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-04T21:13:07Z","title":"Biases in the Quasar Mass-Luminosity Plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.1268","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":"sha256:6c8e4b032601f171db9de5e8f2b77c2d1d090fc05dbb07e583904aaa1274f23b","target":"record","created_at":"2026-05-18T02:04:52Z","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":"8a7188037b49acaa5e51e985554a08f09705140badca97da9470ef46a5d033bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-04T21:13:07Z","title_canon_sha256":"06fa64957e999982d57ebc9c9e663edfc8abd7c7f67506265d808149648b3fe3"},"schema_version":"1.0","source":{"id":"1011.1268","kind":"arxiv","version":2}},"canonical_sha256":"749b3ada4d84c9ff4367c78932c5874fb2dfcbf729277482e740d26adea1d84d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"749b3ada4d84c9ff4367c78932c5874fb2dfcbf729277482e740d26adea1d84d","first_computed_at":"2026-05-18T02:04:52.728469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:52.728469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wID/8nHg+GnR2TLJqP6eG1HT7/6cPC8bq6vO/k6wO46r8ozGyMx3S7AyLKJq3U/amt4v8okc46QSTu/fzKMuCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:52.728904Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.1268","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c8e4b032601f171db9de5e8f2b77c2d1d090fc05dbb07e583904aaa1274f23b","sha256:5c4df343444d85afcf756541738bab04ffecb9fa395c5e18522ce2e676678307"],"state_sha256":"eb80b7974a3631dc356d230c541be4cdc2c94d688c6c997049bd2d176a96c0b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H2SIL/BHYsZ4bOMcQQkhVTOqNmEWXvtLmlIYpN2yl/HBE3GNiQZJiOVzUpOOTKN/FLbVE37ZK1go77tIDdVaCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:57:20.134986Z","bundle_sha256":"4e462be242113611118625b83a82d57eea6ba6bd0e05153ab6515fe57a945323"}}