{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:BDMHPK4O6QTEZULJJN5VLVSBYL","short_pith_number":"pith:BDMHPK4O","canonical_record":{"source":{"id":"astro-ph/9710298","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-10-27T11:01:25Z","cross_cats_sorted":[],"title_canon_sha256":"d2541aeaf6d96570760c7df282a8ce90cc7832bd991d5f6977c630cd9c6def91","abstract_canon_sha256":"6784cd9e2cdd2f871c22f2fe4f087b9ec028edccb90a2aa25b455ee4f6b980bd"},"schema_version":"1.0"},"canonical_sha256":"08d877ab8ef4264cd1694b7b55d641c2cdd417299044e119a174e6dbace73ba6","source":{"kind":"arxiv","id":"astro-ph/9710298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9710298","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9710298v1","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9710298","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_12","alias_value":"BDMHPK4O6QTE","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_16","alias_value":"BDMHPK4O6QTEZULJ","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_8","alias_value":"BDMHPK4O","created_at":"2026-07-04T14:15:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:BDMHPK4O6QTEZULJJN5VLVSBYL","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9710298","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-10-27T11:01:25Z","cross_cats_sorted":[],"title_canon_sha256":"d2541aeaf6d96570760c7df282a8ce90cc7832bd991d5f6977c630cd9c6def91","abstract_canon_sha256":"6784cd9e2cdd2f871c22f2fe4f087b9ec028edccb90a2aa25b455ee4f6b980bd"},"schema_version":"1.0"},"canonical_sha256":"08d877ab8ef4264cd1694b7b55d641c2cdd417299044e119a174e6dbace73ba6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:15:21.013134Z","signature_b64":"YumK+txDDG+7hrspxniHHAYJWj9nxwt0HDm2lNVUbE8ojzfVmKz5ovKRxYAxDcWIJ7Mjw0Dig6h6bPAPESOICQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08d877ab8ef4264cd1694b7b55d641c2cdd417299044e119a174e6dbace73ba6","last_reissued_at":"2026-07-04T14:15:21.012770Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:15:21.012770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9710298","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":"2026-07-04T14:15:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tiJtaE/Rz/3IdKQ/Y2ChgZK0WnSzmIEUrsJcoRN/YoD38Ko/DzcSpGc5+GbU3Xhg5ncsXAn8XerxHR3VMB9aCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:21:59.638987Z"},"content_sha256":"01a9975e26344ed82a24cec61c10604e6e31999790f6f3f518869260741bbb14","schema_version":"1.0","event_id":"sha256:01a9975e26344ed82a24cec61c10604e6e31999790f6f3f518869260741bbb14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:BDMHPK4O6QTEZULJJN5VLVSBYL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New bright soft X-ray selected ROSAT AGN: I. Infrared-to-X-ray spectral energy distributions","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Grupe, H.-C. Thomas, H.H. Fink, K. Beuermann, K. Mannheim","submitted_at":"1997-10-27T11:01:25Z","abstract_excerpt":"We present results of an infrared-to-X-ray study of 76 bright soft X-ray selected Seyfert galaxies discovered in the ROSAT All-Sky Survey. These objects are characterized by steep X-ray spectra in the 0.2-2.0 keV bandpass with power law energy spectral indices in the range of 1.3 to 8 and a lack of internal absorption by neutral hydrogen. Our sample selection based on hardness ratio yields a mean X-ray slope of alpha-X = 2.1, steeper than in any other known AGN population. At optical wavelengths, the soft AGN have significantly bluer spectra than a comparison sample of AGN with a canonical, ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9710298","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/9710298/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":"2026-07-04T14:15:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cUrD0jG/nZxmdWJgg9cm0TmqlvJ3DRxlr/oWpssEvFuOolJgjZRm4v7Eyk2kQZI/FJgaDhA8815+jOk1MS2BBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:21:59.639491Z"},"content_sha256":"51e21d09726e388ac4ee8c2fdbe093be72f2e02b02c4a8146b19d759decc038d","schema_version":"1.0","event_id":"sha256:51e21d09726e388ac4ee8c2fdbe093be72f2e02b02c4a8146b19d759decc038d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/bundle.json","state_url":"https://pith.science/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/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":"2026-08-23T18:21:59Z","links":{"resolver":"https://pith.science/pith/BDMHPK4O6QTEZULJJN5VLVSBYL","bundle":"https://pith.science/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/bundle.json","state":"https://pith.science/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BDMHPK4O6QTEZULJJN5VLVSBYL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:BDMHPK4O6QTEZULJJN5VLVSBYL","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":"6784cd9e2cdd2f871c22f2fe4f087b9ec028edccb90a2aa25b455ee4f6b980bd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-10-27T11:01:25Z","title_canon_sha256":"d2541aeaf6d96570760c7df282a8ce90cc7832bd991d5f6977c630cd9c6def91"},"schema_version":"1.0","source":{"id":"astro-ph/9710298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9710298","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9710298v1","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9710298","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_12","alias_value":"BDMHPK4O6QTE","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_16","alias_value":"BDMHPK4O6QTEZULJ","created_at":"2026-07-04T14:15:21Z"},{"alias_kind":"pith_short_8","alias_value":"BDMHPK4O","created_at":"2026-07-04T14:15:21Z"}],"graph_snapshots":[{"event_id":"sha256:51e21d09726e388ac4ee8c2fdbe093be72f2e02b02c4a8146b19d759decc038d","target":"graph","created_at":"2026-07-04T14:15:21Z","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/9710298/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results of an infrared-to-X-ray study of 76 bright soft X-ray selected Seyfert galaxies discovered in the ROSAT All-Sky Survey. These objects are characterized by steep X-ray spectra in the 0.2-2.0 keV bandpass with power law energy spectral indices in the range of 1.3 to 8 and a lack of internal absorption by neutral hydrogen. Our sample selection based on hardness ratio yields a mean X-ray slope of alpha-X = 2.1, steeper than in any other known AGN population. At optical wavelengths, the soft AGN have significantly bluer spectra than a comparison sample of AGN with a canonical, ha","authors_text":"D. Grupe, H.-C. Thomas, H.H. Fink, K. Beuermann, K. Mannheim","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-10-27T11:01:25Z","title":"New bright soft X-ray selected ROSAT AGN: I. Infrared-to-X-ray spectral energy distributions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9710298","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":"sha256:01a9975e26344ed82a24cec61c10604e6e31999790f6f3f518869260741bbb14","target":"record","created_at":"2026-07-04T14:15:21Z","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":"6784cd9e2cdd2f871c22f2fe4f087b9ec028edccb90a2aa25b455ee4f6b980bd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-10-27T11:01:25Z","title_canon_sha256":"d2541aeaf6d96570760c7df282a8ce90cc7832bd991d5f6977c630cd9c6def91"},"schema_version":"1.0","source":{"id":"astro-ph/9710298","kind":"arxiv","version":1}},"canonical_sha256":"08d877ab8ef4264cd1694b7b55d641c2cdd417299044e119a174e6dbace73ba6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08d877ab8ef4264cd1694b7b55d641c2cdd417299044e119a174e6dbace73ba6","first_computed_at":"2026-07-04T14:15:21.012770Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:15:21.012770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YumK+txDDG+7hrspxniHHAYJWj9nxwt0HDm2lNVUbE8ojzfVmKz5ovKRxYAxDcWIJ7Mjw0Dig6h6bPAPESOICQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:15:21.013134Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9710298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01a9975e26344ed82a24cec61c10604e6e31999790f6f3f518869260741bbb14","sha256:51e21d09726e388ac4ee8c2fdbe093be72f2e02b02c4a8146b19d759decc038d"],"state_sha256":"cc37d24b0ef6e3fb3c0b909d15e4559861f60e6b3333bf635ecbfbde08cc15a5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W9pDHBhAwq2RTzJGpt8R5tubmm9DBCfWSSwkLJjUxojAm2x5UVMXtbBKeEN/siScrGTpxS6m+nXrNlLcl0K2Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T18:21:59.643188Z","bundle_sha256":"b69382b52ea499d68126d62c07ca27d9e1564d56197bf1e586735409f052a106"}}