{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:OBDGTAVAT6SQHCZHAIJMWINIUU","short_pith_number":"pith:OBDGTAVA","canonical_record":{"source":{"id":"astro-ph/0012380","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-18T09:23:37Z","cross_cats_sorted":[],"title_canon_sha256":"fb7aec4952bc43183dea98229edce2795d484b741b47eeaba03b0c0b53059c6d","abstract_canon_sha256":"f4e0863fb4fc44bf61b3c29f45796db49be63c994fdcb6db9051c77745249e84"},"schema_version":"1.0"},"canonical_sha256":"70466982a09fa5038b270212cb21a8a53efa4ef733c6f03be224717ae2a49cf7","source":{"kind":"arxiv","id":"astro-ph/0012380","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0012380","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0012380v1","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0012380","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_12","alias_value":"OBDGTAVAT6SQ","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_16","alias_value":"OBDGTAVAT6SQHCZH","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_8","alias_value":"OBDGTAVA","created_at":"2026-07-04T16:17:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:OBDGTAVAT6SQHCZHAIJMWINIUU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0012380","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-18T09:23:37Z","cross_cats_sorted":[],"title_canon_sha256":"fb7aec4952bc43183dea98229edce2795d484b741b47eeaba03b0c0b53059c6d","abstract_canon_sha256":"f4e0863fb4fc44bf61b3c29f45796db49be63c994fdcb6db9051c77745249e84"},"schema_version":"1.0"},"canonical_sha256":"70466982a09fa5038b270212cb21a8a53efa4ef733c6f03be224717ae2a49cf7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:17:49.066425Z","signature_b64":"ECquzzR75L6TaZgbwyF2U9fqivosSoPpj7aHfKGbh0ooW7GzUWMoNEmst+/R2R/C+6CxUsnWS43TH432YYSNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70466982a09fa5038b270212cb21a8a53efa4ef733c6f03be224717ae2a49cf7","last_reissued_at":"2026-07-04T16:17:49.066029Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:17:49.066029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0012380","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":"2026-07-04T16:17:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K8/yeAu7X9K2yO72ssUptEpNnb76SJhPZV14NMY2bbLJl85CBmvSYJRL6PINB0rIURjBgdjJOIFfuyJzKbYBBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T11:35:11.883198Z"},"content_sha256":"251c6d84bc71316dfbee6e0fa7ae9fa45c84a8e162614b8504b5b5289e711147","schema_version":"1.0","event_id":"sha256:251c6d84bc71316dfbee6e0fa7ae9fa45c84a8e162614b8504b5b5289e711147"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:OBDGTAVAT6SQHCZHAIJMWINIUU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galactic Black HOle Binary Systems","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Done","submitted_at":"2000-12-18T09:23:37Z","abstract_excerpt":"I review observations of the X-ray spectra of Galactic Black Hole Candidates, and theoretical ideas as to how these can be produced. X-ray reflection should enable different source geometries to be distinguished, but the ionisation instability of X-ray irradiated material in hydrostatic equilibrium gives rise to large ambiguities in interpretation. It is not currently possible to determine whether the underlying emission mechanism in the low state is an advective flow or magnetic reconnection above the disk, but more detailed modelling of the ionisation instability {\\it may} allow us to distin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0012380","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/0012380/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":"2026-07-04T16:17:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PI7YeMcl15M/kMmme6T1oFfyDfm0R+htviB9Sx+ZlhkXfyCP4mX8jFSei7iGrAPJvK9vthu7IHfSZXlWjmhADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T11:35:11.884182Z"},"content_sha256":"6723efbc2b389463aa2ee21a8c920b4e7b8d738637ed5d2c24df4f4ddfca4b0c","schema_version":"1.0","event_id":"sha256:6723efbc2b389463aa2ee21a8c920b4e7b8d738637ed5d2c24df4f4ddfca4b0c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/bundle.json","state_url":"https://pith.science/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/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":"2026-08-12T11:35:11Z","links":{"resolver":"https://pith.science/pith/OBDGTAVAT6SQHCZHAIJMWINIUU","bundle":"https://pith.science/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/bundle.json","state":"https://pith.science/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OBDGTAVAT6SQHCZHAIJMWINIUU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:OBDGTAVAT6SQHCZHAIJMWINIUU","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":"f4e0863fb4fc44bf61b3c29f45796db49be63c994fdcb6db9051c77745249e84","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-18T09:23:37Z","title_canon_sha256":"fb7aec4952bc43183dea98229edce2795d484b741b47eeaba03b0c0b53059c6d"},"schema_version":"1.0","source":{"id":"astro-ph/0012380","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0012380","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0012380v1","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0012380","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_12","alias_value":"OBDGTAVAT6SQ","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_16","alias_value":"OBDGTAVAT6SQHCZH","created_at":"2026-07-04T16:17:49Z"},{"alias_kind":"pith_short_8","alias_value":"OBDGTAVA","created_at":"2026-07-04T16:17:49Z"}],"graph_snapshots":[{"event_id":"sha256:6723efbc2b389463aa2ee21a8c920b4e7b8d738637ed5d2c24df4f4ddfca4b0c","target":"graph","created_at":"2026-07-04T16:17:49Z","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/0012380/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"I review observations of the X-ray spectra of Galactic Black Hole Candidates, and theoretical ideas as to how these can be produced. X-ray reflection should enable different source geometries to be distinguished, but the ionisation instability of X-ray irradiated material in hydrostatic equilibrium gives rise to large ambiguities in interpretation. It is not currently possible to determine whether the underlying emission mechanism in the low state is an advective flow or magnetic reconnection above the disk, but more detailed modelling of the ionisation instability {\\it may} allow us to distin","authors_text":"C. Done","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-12-18T09:23:37Z","title":"Galactic Black HOle Binary Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0012380","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":"sha256:251c6d84bc71316dfbee6e0fa7ae9fa45c84a8e162614b8504b5b5289e711147","target":"record","created_at":"2026-07-04T16:17:49Z","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":"f4e0863fb4fc44bf61b3c29f45796db49be63c994fdcb6db9051c77745249e84","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-12-18T09:23:37Z","title_canon_sha256":"fb7aec4952bc43183dea98229edce2795d484b741b47eeaba03b0c0b53059c6d"},"schema_version":"1.0","source":{"id":"astro-ph/0012380","kind":"arxiv","version":1}},"canonical_sha256":"70466982a09fa5038b270212cb21a8a53efa4ef733c6f03be224717ae2a49cf7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70466982a09fa5038b270212cb21a8a53efa4ef733c6f03be224717ae2a49cf7","first_computed_at":"2026-07-04T16:17:49.066029Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:17:49.066029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ECquzzR75L6TaZgbwyF2U9fqivosSoPpj7aHfKGbh0ooW7GzUWMoNEmst+/R2R/C+6CxUsnWS43TH432YYSNAw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:17:49.066425Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0012380","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:251c6d84bc71316dfbee6e0fa7ae9fa45c84a8e162614b8504b5b5289e711147","sha256:6723efbc2b389463aa2ee21a8c920b4e7b8d738637ed5d2c24df4f4ddfca4b0c"],"state_sha256":"864acbbeb626d337fd110c959eea4fbcd8fee2a5853b7c830d6570f7ef564dc2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Kwzmo7CwGZzKTOnDSaGYjPkJQ+sQ3t+0/taRiua/pNsuhc1b020kIqQC1Cu+AgUMsFqsjCVod2VzPVBHNUjAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T11:35:11.905866Z","bundle_sha256":"8267fc62d3701cad3590f79a021a1c45a4cf2f9659562ea3b9de617d6a289869"}}