{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:ABCHRBYJGYZ3R5JXJKYZF3R6SY","short_pith_number":"pith:ABCHRBYJ","canonical_record":{"source":{"id":"astro-ph/0006356","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-06-26T08:09:12Z","cross_cats_sorted":[],"title_canon_sha256":"903f49ff7b8bbc51e0a2b4a0eb4343a607d3131f77b6d8f8566584b09c1330f6","abstract_canon_sha256":"092db7463a1338b19f6411fed0d15145b66f7dce91d56c51ccbc36a48ed8ff8a"},"schema_version":"1.0"},"canonical_sha256":"00447887093633b8f5374ab192ee3e96125f7c11c8eb293f6f3085ac40cf9476","source":{"kind":"arxiv","id":"astro-ph/0006356","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0006356","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0006356v1","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0006356","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_12","alias_value":"ABCHRBYJGYZ3","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_16","alias_value":"ABCHRBYJGYZ3R5JX","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_8","alias_value":"ABCHRBYJ","created_at":"2026-07-04T14:10:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:ABCHRBYJGYZ3R5JXJKYZF3R6SY","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0006356","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-06-26T08:09:12Z","cross_cats_sorted":[],"title_canon_sha256":"903f49ff7b8bbc51e0a2b4a0eb4343a607d3131f77b6d8f8566584b09c1330f6","abstract_canon_sha256":"092db7463a1338b19f6411fed0d15145b66f7dce91d56c51ccbc36a48ed8ff8a"},"schema_version":"1.0"},"canonical_sha256":"00447887093633b8f5374ab192ee3e96125f7c11c8eb293f6f3085ac40cf9476","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:10:27.346467Z","signature_b64":"0t+iSHcNmpUwn7kYEyxWQo8Jl7NdbGfGe9PwXlAiS+5o1DYFMEzOAmrWWyks0KhSYZJHzj5QVS02bdHn3BuhAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00447887093633b8f5374ab192ee3e96125f7c11c8eb293f6f3085ac40cf9476","last_reissued_at":"2026-07-04T14:10:27.346014Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:10:27.346014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0006356","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":"2026-07-04T14:10:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xLUaMVum+V1iHyLJy8vPUGihuDwc+q7/ahiccye9WM1bmEXvEnH0ETRR6/6hyChQiMpPOF16mZP5NOwqBa6MDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:20:06.006712Z"},"content_sha256":"d8a9bed0900d8b7412b013ca0e107aa448ccc353c1b28d8c6299acf96bb95ee8","schema_version":"1.0","event_id":"sha256:d8a9bed0900d8b7412b013ca0e107aa448ccc353c1b28d8c6299acf96bb95ee8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:ABCHRBYJGYZ3R5JXJKYZF3R6SY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HI absorption in radio galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C.N. Tadhunter, G. van Moorsel, N. Killeen, R. Morganti, T.A. Oosterloo","submitted_at":"2000-06-26T08:09:12Z","abstract_excerpt":"Twenty-two powerful radio galaxies have been searched for HI absorption. We find the highest probability of detecting HI in absorption among narrow-line compact (or small) galaxies or galaxies with indication of richer interstellar medium (i.e. with ongoing or recent star-formation). We discuss the difficulty in the interpretation of the origin of the HI absorption due to the uncertainty in the systemic velocity of the galaxies."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0006356","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/0006356/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":"2026-07-04T14:10:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JD0zCl7yUp3Y3YGJrXUIgD2q4E4FJyP/E/x1FI8thLJcN1gxsvfhHvIOWEy0bVjSZrEUQcp3ZOamLCnv7A6LDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:20:06.007119Z"},"content_sha256":"d3aef16d1df2ef6461d0624b7355a8bfb2c86d9a4a96c42592b43a3075a12265","schema_version":"1.0","event_id":"sha256:d3aef16d1df2ef6461d0624b7355a8bfb2c86d9a4a96c42592b43a3075a12265"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/bundle.json","state_url":"https://pith.science/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/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":"2026-08-05T02:20:06Z","links":{"resolver":"https://pith.science/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY","bundle":"https://pith.science/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/bundle.json","state":"https://pith.science/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ABCHRBYJGYZ3R5JXJKYZF3R6SY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:ABCHRBYJGYZ3R5JXJKYZF3R6SY","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":"092db7463a1338b19f6411fed0d15145b66f7dce91d56c51ccbc36a48ed8ff8a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-06-26T08:09:12Z","title_canon_sha256":"903f49ff7b8bbc51e0a2b4a0eb4343a607d3131f77b6d8f8566584b09c1330f6"},"schema_version":"1.0","source":{"id":"astro-ph/0006356","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0006356","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0006356v1","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0006356","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_12","alias_value":"ABCHRBYJGYZ3","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_16","alias_value":"ABCHRBYJGYZ3R5JX","created_at":"2026-07-04T14:10:27Z"},{"alias_kind":"pith_short_8","alias_value":"ABCHRBYJ","created_at":"2026-07-04T14:10:27Z"}],"graph_snapshots":[{"event_id":"sha256:d3aef16d1df2ef6461d0624b7355a8bfb2c86d9a4a96c42592b43a3075a12265","target":"graph","created_at":"2026-07-04T14:10:27Z","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/0006356/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Twenty-two powerful radio galaxies have been searched for HI absorption. We find the highest probability of detecting HI in absorption among narrow-line compact (or small) galaxies or galaxies with indication of richer interstellar medium (i.e. with ongoing or recent star-formation). We discuss the difficulty in the interpretation of the origin of the HI absorption due to the uncertainty in the systemic velocity of the galaxies.","authors_text":"C.N. Tadhunter, G. van Moorsel, N. Killeen, R. Morganti, T.A. Oosterloo","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-06-26T08:09:12Z","title":"HI absorption in radio galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0006356","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:d8a9bed0900d8b7412b013ca0e107aa448ccc353c1b28d8c6299acf96bb95ee8","target":"record","created_at":"2026-07-04T14:10:27Z","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":"092db7463a1338b19f6411fed0d15145b66f7dce91d56c51ccbc36a48ed8ff8a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-06-26T08:09:12Z","title_canon_sha256":"903f49ff7b8bbc51e0a2b4a0eb4343a607d3131f77b6d8f8566584b09c1330f6"},"schema_version":"1.0","source":{"id":"astro-ph/0006356","kind":"arxiv","version":1}},"canonical_sha256":"00447887093633b8f5374ab192ee3e96125f7c11c8eb293f6f3085ac40cf9476","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00447887093633b8f5374ab192ee3e96125f7c11c8eb293f6f3085ac40cf9476","first_computed_at":"2026-07-04T14:10:27.346014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:10:27.346014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0t+iSHcNmpUwn7kYEyxWQo8Jl7NdbGfGe9PwXlAiS+5o1DYFMEzOAmrWWyks0KhSYZJHzj5QVS02bdHn3BuhAw==","signature_status":"signed_v1","signed_at":"2026-07-04T14:10:27.346467Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0006356","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8a9bed0900d8b7412b013ca0e107aa448ccc353c1b28d8c6299acf96bb95ee8","sha256:d3aef16d1df2ef6461d0624b7355a8bfb2c86d9a4a96c42592b43a3075a12265"],"state_sha256":"f3569e7c4f4d00233b3844ea5a08d4aa9574c34ce79be76e3e41c9bf41eefd54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WK5NkHLxJ3idvY9w2TyAWQVz65UkHsKtkOiNUbPyws81p7ahrF/d13pbQCRvYX0wiHerDDtjGa2WcqUSEFprBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T02:20:06.009540Z","bundle_sha256":"7fe8c850017e6867aa0508c974f2a3c4552fe442f49c42b24e9c56508b6a232a"}}