{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:YFXKXSGMYBGOTAPME2OUEIM5S5","short_pith_number":"pith:YFXKXSGM","canonical_record":{"source":{"id":"astro-ph/0303464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-20T13:25:56Z","cross_cats_sorted":[],"title_canon_sha256":"e41c5c3f1cb465e8a6c9f007374f5b0fcb2bbfb56431955bcbfa00bbae7e28c3","abstract_canon_sha256":"6641aaace5c1fede648d167d866e0876e56052caeec0c6b0b1100acba0784e62"},"schema_version":"1.0"},"canonical_sha256":"c16eabc8ccc04ce981ec269d42219d974ce707ba47a676b566da0110cd744bcb","source":{"kind":"arxiv","id":"astro-ph/0303464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0303464","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0303464v1","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0303464","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"YFXKXSGMYBGO","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_16","alias_value":"YFXKXSGMYBGOTAPM","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_8","alias_value":"YFXKXSGM","created_at":"2026-07-04T16:36:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:YFXKXSGMYBGOTAPME2OUEIM5S5","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0303464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-20T13:25:56Z","cross_cats_sorted":[],"title_canon_sha256":"e41c5c3f1cb465e8a6c9f007374f5b0fcb2bbfb56431955bcbfa00bbae7e28c3","abstract_canon_sha256":"6641aaace5c1fede648d167d866e0876e56052caeec0c6b0b1100acba0784e62"},"schema_version":"1.0"},"canonical_sha256":"c16eabc8ccc04ce981ec269d42219d974ce707ba47a676b566da0110cd744bcb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:36:42.266558Z","signature_b64":"7nSiVjr/9zvEB2QOFg/uXK75DpB3gf10BbmMqwLVvGewAbeIkuOtMZfuxG0jyYc+nY3paC/eRA6srx8oGedHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c16eabc8ccc04ce981ec269d42219d974ce707ba47a676b566da0110cd744bcb","last_reissued_at":"2026-07-04T16:36:42.266115Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:36:42.266115Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0303464","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":"2026-07-04T16:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qNwKxTEcpenwXZd1JzdjXBPk9p+VK76N1zp0CG23sfVbdV3ck2AVFiI3eAUeTTn8/B9ab/abNi+rpSaNq3ULCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T08:05:24.293742Z"},"content_sha256":"9082355b7a62a066bb0be71b10f7aea933130548c6b6c152344ba5dd75b90661","schema_version":"1.0","event_id":"sha256:9082355b7a62a066bb0be71b10f7aea933130548c6b6c152344ba5dd75b90661"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:YFXKXSGMYBGOTAPME2OUEIM5S5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A grid of synthetic ionizing spectra for very hot compact stars from NLTE model atmospheres","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Thomas Rauch","submitted_at":"2003-03-20T13:25:56Z","abstract_excerpt":"The precise analysis of properties of planetary nebulae is strongly dependent on good models for the stellar ionizing spectrum. Observations in the UV - X-ray wavelength range as well as NLTE model atmosphere calculations of spectra of their exciting stars have shown that neither blackbody fluxes nor \"standard\" NLTE atmosphere models which are composed out of hydrogen and helium only are good approximations. Strong differences between synthetic spectra from these compared to observed spectra at energies higher than 54 eV (He II ground state) can be ascribed to the neglect of metal-line blanket"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0303464","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0303464/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bf7qdd1PD/EtQiaU6YkTE8Tmc3CdMh9tgebae1vX0V4LRl5jr5iSiktoH/Pi5pXKNGaJ3xW27fsg4tvhGQ3ECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T08:05:24.294108Z"},"content_sha256":"8a8972360054f103aebebbbe19105dfc5e397d84ce38608a55e6025b9c2b32d9","schema_version":"1.0","event_id":"sha256:8a8972360054f103aebebbbe19105dfc5e397d84ce38608a55e6025b9c2b32d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/bundle.json","state_url":"https://pith.science/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/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":"2026-07-22T08:05:24Z","links":{"resolver":"https://pith.science/pith/YFXKXSGMYBGOTAPME2OUEIM5S5","bundle":"https://pith.science/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/bundle.json","state":"https://pith.science/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFXKXSGMYBGOTAPME2OUEIM5S5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:YFXKXSGMYBGOTAPME2OUEIM5S5","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":"6641aaace5c1fede648d167d866e0876e56052caeec0c6b0b1100acba0784e62","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-20T13:25:56Z","title_canon_sha256":"e41c5c3f1cb465e8a6c9f007374f5b0fcb2bbfb56431955bcbfa00bbae7e28c3"},"schema_version":"1.0","source":{"id":"astro-ph/0303464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0303464","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0303464v1","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0303464","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"YFXKXSGMYBGO","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_16","alias_value":"YFXKXSGMYBGOTAPM","created_at":"2026-07-04T16:36:42Z"},{"alias_kind":"pith_short_8","alias_value":"YFXKXSGM","created_at":"2026-07-04T16:36:42Z"}],"graph_snapshots":[{"event_id":"sha256:8a8972360054f103aebebbbe19105dfc5e397d84ce38608a55e6025b9c2b32d9","target":"graph","created_at":"2026-07-04T16:36:42Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0303464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The precise analysis of properties of planetary nebulae is strongly dependent on good models for the stellar ionizing spectrum. Observations in the UV - X-ray wavelength range as well as NLTE model atmosphere calculations of spectra of their exciting stars have shown that neither blackbody fluxes nor \"standard\" NLTE atmosphere models which are composed out of hydrogen and helium only are good approximations. Strong differences between synthetic spectra from these compared to observed spectra at energies higher than 54 eV (He II ground state) can be ascribed to the neglect of metal-line blanket","authors_text":"Thomas Rauch","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-03-20T13:25:56Z","title":"A grid of synthetic ionizing spectra for very hot compact stars from NLTE model atmospheres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0303464","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":"sha256:9082355b7a62a066bb0be71b10f7aea933130548c6b6c152344ba5dd75b90661","target":"record","created_at":"2026-07-04T16:36:42Z","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":"6641aaace5c1fede648d167d866e0876e56052caeec0c6b0b1100acba0784e62","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-20T13:25:56Z","title_canon_sha256":"e41c5c3f1cb465e8a6c9f007374f5b0fcb2bbfb56431955bcbfa00bbae7e28c3"},"schema_version":"1.0","source":{"id":"astro-ph/0303464","kind":"arxiv","version":1}},"canonical_sha256":"c16eabc8ccc04ce981ec269d42219d974ce707ba47a676b566da0110cd744bcb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c16eabc8ccc04ce981ec269d42219d974ce707ba47a676b566da0110cd744bcb","first_computed_at":"2026-07-04T16:36:42.266115Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:36:42.266115Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7nSiVjr/9zvEB2QOFg/uXK75DpB3gf10BbmMqwLVvGewAbeIkuOtMZfuxG0jyYc+nY3paC/eRA6srx8oGedHCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:36:42.266558Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0303464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9082355b7a62a066bb0be71b10f7aea933130548c6b6c152344ba5dd75b90661","sha256:8a8972360054f103aebebbbe19105dfc5e397d84ce38608a55e6025b9c2b32d9"],"state_sha256":"8e5784e725f43fab97d288b9233d0344a56041fe357798cc3e0cb58b2f7bb290"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"luajaQPwgqhwTQ4pqITVQAz1MyZJlLbTY6MOQEGMQzvuPjVIUswIjbQrzCd7nV4M/Q5HznmRasIGg0qm0MXmDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T08:05:24.296138Z","bundle_sha256":"a1e4e16c71f5d5fe4d8598e468271040891f5b34bbb914006f307a578f1a3e49"}}