{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:DULSKWNEG6GJIPVIAYPEO7YWFX","short_pith_number":"pith:DULSKWNE","canonical_record":{"source":{"id":"astro-ph/9609175","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-25T12:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"a9a8194ac0145cfc159c4774950e8dd91995a359e6a2e5a9d5859cb1451570e7","abstract_canon_sha256":"896ab2542fd80354f5eccae667a62a25e02917fcec588cc8b68cbd4391ad8f9e"},"schema_version":"1.0"},"canonical_sha256":"1d172559a4378c943ea8061e477f162dcac3a4e13aff4d06aff582f9c3b9504a","source":{"kind":"arxiv","id":"astro-ph/9609175","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9609175","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9609175v1","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9609175","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"pith_short_12","alias_value":"DULSKWNEG6GJ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DULSKWNEG6GJIPVI","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DULSKWNE","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:DULSKWNEG6GJIPVIAYPEO7YWFX","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9609175","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-25T12:42:58Z","cross_cats_sorted":[],"title_canon_sha256":"a9a8194ac0145cfc159c4774950e8dd91995a359e6a2e5a9d5859cb1451570e7","abstract_canon_sha256":"896ab2542fd80354f5eccae667a62a25e02917fcec588cc8b68cbd4391ad8f9e"},"schema_version":"1.0"},"canonical_sha256":"1d172559a4378c943ea8061e477f162dcac3a4e13aff4d06aff582f9c3b9504a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:19.222094Z","signature_b64":"mWto1XBZRyewZYPUQDXMW4Y2SCLwkjlzKP9CqOuOCW5LiCN2tKhzQrAjhxckWwlobs8KmZASxyQvr3jbWgs8CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d172559a4378c943ea8061e477f162dcac3a4e13aff4d06aff582f9c3b9504a","last_reissued_at":"2026-05-18T01:40:19.221624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:19.221624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9609175","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":"2026-05-18T01:40:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xv/nc/s4giuMi0hfPpebAYDwCg6uKPpnLLLa6TAI4eWqtBEchQDQbhlkeFwV9Dc7xYoYOTmlFezKt7F7B9fkBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:22:50.891237Z"},"content_sha256":"8be6bf5a83f8edf83c0e77c9d7a9c50e213d7b57827c7a7840e99836a86fed3b","schema_version":"1.0","event_id":"sha256:8be6bf5a83f8edf83c0e77c9d7a9c50e213d7b57827c7a7840e99836a86fed3b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:DULSKWNEG6GJIPVIAYPEO7YWFX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Models of optical/UV continuum in AGN. Constraints from NGC 5548 monitoring campaign","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Czerny (Copernicus Astronomical Center, Warsaw), Z. Loska","submitted_at":"1996-09-25T12:42:58Z","abstract_excerpt":"We analyse the data from the optical/IUE observational campaign of the Seyfert galaxy NGC 5548 in the context of 10 phenomenological models. On the basis of the optical/UV data as well as constraints from the X-ray observations we can favour one model of the nucleus: an accretion disc with an inner radius cutoff surrounded by a hot corona. The second acceptable model for optical/UV data is a distribution of optically thin clouds. However, X-ray constraints which were crucial in the analysis of disc type models could not have been applied; further development of this model is necessary."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9609175","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":"2026-05-18T01:40:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WbB6t9zHTV1Z5Xsvfi6LHCzSGppxhHz9jkISBozWfQlN7c3FbGnjwjmeJkrMr9g7NThZdwB7DuQOrmUcovH8Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:22:50.892000Z"},"content_sha256":"69648032aff44dd097704cfb27e97271beb349fe1f52af2dbe2a97814e9aeb86","schema_version":"1.0","event_id":"sha256:69648032aff44dd097704cfb27e97271beb349fe1f52af2dbe2a97814e9aeb86"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/bundle.json","state_url":"https://pith.science/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/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":"2026-06-07T17:22:50Z","links":{"resolver":"https://pith.science/pith/DULSKWNEG6GJIPVIAYPEO7YWFX","bundle":"https://pith.science/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/bundle.json","state":"https://pith.science/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DULSKWNEG6GJIPVIAYPEO7YWFX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:DULSKWNEG6GJIPVIAYPEO7YWFX","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":"896ab2542fd80354f5eccae667a62a25e02917fcec588cc8b68cbd4391ad8f9e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-25T12:42:58Z","title_canon_sha256":"a9a8194ac0145cfc159c4774950e8dd91995a359e6a2e5a9d5859cb1451570e7"},"schema_version":"1.0","source":{"id":"astro-ph/9609175","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9609175","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9609175v1","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9609175","created_at":"2026-05-18T01:40:19Z"},{"alias_kind":"pith_short_12","alias_value":"DULSKWNEG6GJ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DULSKWNEG6GJIPVI","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DULSKWNE","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:69648032aff44dd097704cfb27e97271beb349fe1f52af2dbe2a97814e9aeb86","target":"graph","created_at":"2026-05-18T01:40:19Z","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 analyse the data from the optical/IUE observational campaign of the Seyfert galaxy NGC 5548 in the context of 10 phenomenological models. On the basis of the optical/UV data as well as constraints from the X-ray observations we can favour one model of the nucleus: an accretion disc with an inner radius cutoff surrounded by a hot corona. The second acceptable model for optical/UV data is a distribution of optically thin clouds. However, X-ray constraints which were crucial in the analysis of disc type models could not have been applied; further development of this model is necessary.","authors_text":"B. Czerny (Copernicus Astronomical Center, Warsaw), Z. Loska","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-09-25T12:42:58Z","title":"Models of optical/UV continuum in AGN. Constraints from NGC 5548 monitoring campaign"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9609175","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":"sha256:8be6bf5a83f8edf83c0e77c9d7a9c50e213d7b57827c7a7840e99836a86fed3b","target":"record","created_at":"2026-05-18T01:40:19Z","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":"896ab2542fd80354f5eccae667a62a25e02917fcec588cc8b68cbd4391ad8f9e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-25T12:42:58Z","title_canon_sha256":"a9a8194ac0145cfc159c4774950e8dd91995a359e6a2e5a9d5859cb1451570e7"},"schema_version":"1.0","source":{"id":"astro-ph/9609175","kind":"arxiv","version":1}},"canonical_sha256":"1d172559a4378c943ea8061e477f162dcac3a4e13aff4d06aff582f9c3b9504a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d172559a4378c943ea8061e477f162dcac3a4e13aff4d06aff582f9c3b9504a","first_computed_at":"2026-05-18T01:40:19.221624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:19.221624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mWto1XBZRyewZYPUQDXMW4Y2SCLwkjlzKP9CqOuOCW5LiCN2tKhzQrAjhxckWwlobs8KmZASxyQvr3jbWgs8CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:19.222094Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9609175","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8be6bf5a83f8edf83c0e77c9d7a9c50e213d7b57827c7a7840e99836a86fed3b","sha256:69648032aff44dd097704cfb27e97271beb349fe1f52af2dbe2a97814e9aeb86"],"state_sha256":"5722084e0e0844c860e836c64835e3a0684aa48539b5c6fab6676733a3e67b4f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dBinrV+4rD/P3KbBphQwqNnkBM9M+aWBbMNZlyp+7GSXfSa/3f7Rehq0cZiJvHIga1VJqm6tb8iNLpKgOm9BDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:22:50.895770Z","bundle_sha256":"ea091da2433bf03d97dafb3e383d70bf601a6e6cb55bdd4bdbd5340468a88081"}}