{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:XMS3ZNRDX5W4RWV43WMS5KKGSV","short_pith_number":"pith:XMS3ZNRD","canonical_record":{"source":{"id":"0809.2599","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-15T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9876455748f960ffbfb81da278dcde00cf261bd32e032270f379288fa7e4e241","abstract_canon_sha256":"f960f71c2bb0a8cb6613c52770c2b9d1861477095deade7bc4fb902881536b11"},"schema_version":"1.0"},"canonical_sha256":"bb25bcb623bf6dc8dabcdd992ea9469548400876d55504bd3350d564380499a6","source":{"kind":"arxiv","id":"0809.2599","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.2599","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"arxiv_version","alias_value":"0809.2599v2","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.2599","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_12","alias_value":"XMS3ZNRDX5W4","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_16","alias_value":"XMS3ZNRDX5W4RWV4","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_8","alias_value":"XMS3ZNRD","created_at":"2026-07-04T17:12:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:XMS3ZNRDX5W4RWV43WMS5KKGSV","target":"record","payload":{"canonical_record":{"source":{"id":"0809.2599","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-15T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9876455748f960ffbfb81da278dcde00cf261bd32e032270f379288fa7e4e241","abstract_canon_sha256":"f960f71c2bb0a8cb6613c52770c2b9d1861477095deade7bc4fb902881536b11"},"schema_version":"1.0"},"canonical_sha256":"bb25bcb623bf6dc8dabcdd992ea9469548400876d55504bd3350d564380499a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:12:44.384055Z","signature_b64":"abhGazWt5sJhJzn2blkbVadBEKZw/4MPv2nzDkpA76eZU/2unUgK6lLllpOvdG1u93qMbCoy6+2HLrpDOJTDDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb25bcb623bf6dc8dabcdd992ea9469548400876d55504bd3350d564380499a6","last_reissued_at":"2026-07-04T17:12:44.383675Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:12:44.383675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0809.2599","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":"2026-07-04T17:12:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HnJbzXJ1hrb06AjWtXgtjD2cFyW/RBnev8RU0d8WWFMNqFtkLVEeGkq2A36HDH/onr3nkJrI+Fb0CZdXEvJTBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:00:08.493726Z"},"content_sha256":"051d1e1e4f33b5546a1dd64c5e3fd89f606de98b295cb7a6c996873a259bd4bc","schema_version":"1.0","event_id":"sha256:051d1e1e4f33b5546a1dd64c5e3fd89f606de98b295cb7a6c996873a259bd4bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:XMS3ZNRDX5W4RWV43WMS5KKGSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First detection of hard X-ray photons in the soft X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007: The X-ray photon distribution observed by Swift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Dirk Grupe (Penn State University), Garching), Karen M. Leighly (University of Oklahoma), Stefanie Komossa (MPI fuer extraterretrische Physik","submitted_at":"2008-09-15T20:00:03Z","abstract_excerpt":"We report on the first detection of hard X-ray photons (E>2.5 keV) in the X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007 which was the AGN with the softest X-ray spectrum during the ROSAT All-Sky Survey. The AGN is clearly detected at a level of about 2 x 10^{-17} W m^{-2} in the observed 0.3-10.0 keV band by Swift in a 50 ks observation in 2007 September. For the first time since the ROSAT All-Sky Survey observation in 1990 it was possible to derive an X-ray photon distribution by adding together all Swift observations that have been performed so far (85.5 ks in total). This photon dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.2599","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0809.2599/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":"2026-07-04T17:12:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DiTvQGeW2h81sk5lLgX9diQhlB+qDewIb+zzubXjKjhS1V5bX+TESA9olF0BKPQAl+KYzUBjlytyJc9gu9r6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:00:08.494266Z"},"content_sha256":"faaf0ff20684fbf65345cb31ea68a12edf954d50e672aa6904fc6db70b40d786","schema_version":"1.0","event_id":"sha256:faaf0ff20684fbf65345cb31ea68a12edf954d50e672aa6904fc6db70b40d786"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/bundle.json","state_url":"https://pith.science/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/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":"2026-08-06T16:00:08Z","links":{"resolver":"https://pith.science/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV","bundle":"https://pith.science/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/bundle.json","state":"https://pith.science/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XMS3ZNRDX5W4RWV43WMS5KKGSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:XMS3ZNRDX5W4RWV43WMS5KKGSV","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":"f960f71c2bb0a8cb6613c52770c2b9d1861477095deade7bc4fb902881536b11","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-15T20:00:03Z","title_canon_sha256":"9876455748f960ffbfb81da278dcde00cf261bd32e032270f379288fa7e4e241"},"schema_version":"1.0","source":{"id":"0809.2599","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.2599","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"arxiv_version","alias_value":"0809.2599v2","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.2599","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_12","alias_value":"XMS3ZNRDX5W4","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_16","alias_value":"XMS3ZNRDX5W4RWV4","created_at":"2026-07-04T17:12:44Z"},{"alias_kind":"pith_short_8","alias_value":"XMS3ZNRD","created_at":"2026-07-04T17:12:44Z"}],"graph_snapshots":[{"event_id":"sha256:faaf0ff20684fbf65345cb31ea68a12edf954d50e672aa6904fc6db70b40d786","target":"graph","created_at":"2026-07-04T17:12:44Z","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/0809.2599/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the first detection of hard X-ray photons (E>2.5 keV) in the X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007 which was the AGN with the softest X-ray spectrum during the ROSAT All-Sky Survey. The AGN is clearly detected at a level of about 2 x 10^{-17} W m^{-2} in the observed 0.3-10.0 keV band by Swift in a 50 ks observation in 2007 September. For the first time since the ROSAT All-Sky Survey observation in 1990 it was possible to derive an X-ray photon distribution by adding together all Swift observations that have been performed so far (85.5 ks in total). This photon dis","authors_text":"Dirk Grupe (Penn State University), Garching), Karen M. Leighly (University of Oklahoma), Stefanie Komossa (MPI fuer extraterretrische Physik","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-15T20:00:03Z","title":"First detection of hard X-ray photons in the soft X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007: The X-ray photon distribution observed by Swift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.2599","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":"sha256:051d1e1e4f33b5546a1dd64c5e3fd89f606de98b295cb7a6c996873a259bd4bc","target":"record","created_at":"2026-07-04T17:12:44Z","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":"f960f71c2bb0a8cb6613c52770c2b9d1861477095deade7bc4fb902881536b11","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-15T20:00:03Z","title_canon_sha256":"9876455748f960ffbfb81da278dcde00cf261bd32e032270f379288fa7e4e241"},"schema_version":"1.0","source":{"id":"0809.2599","kind":"arxiv","version":2}},"canonical_sha256":"bb25bcb623bf6dc8dabcdd992ea9469548400876d55504bd3350d564380499a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb25bcb623bf6dc8dabcdd992ea9469548400876d55504bd3350d564380499a6","first_computed_at":"2026-07-04T17:12:44.383675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:12:44.383675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"abhGazWt5sJhJzn2blkbVadBEKZw/4MPv2nzDkpA76eZU/2unUgK6lLllpOvdG1u93qMbCoy6+2HLrpDOJTDDA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:12:44.384055Z","signed_message":"canonical_sha256_bytes"},"source_id":"0809.2599","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:051d1e1e4f33b5546a1dd64c5e3fd89f606de98b295cb7a6c996873a259bd4bc","sha256:faaf0ff20684fbf65345cb31ea68a12edf954d50e672aa6904fc6db70b40d786"],"state_sha256":"f4103efef761e88514656906d2a3aed0688489f0cacf6a38400bb8c180b64381"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tWZSlo7/V8VIhpGqP5qjdB7Zi0relo8hpI07mNGnxaOUUgK04IJ9VZruZBs7Jll35oQRFUJ8thhVk490jFtiDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T16:00:08.497732Z","bundle_sha256":"ee081f741feed571389d904f42b40c0bbe028a5768a551a117d55412224aac2e"}}