{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:55A5MQN3TJMHAFT2U7I6JC26WI","short_pith_number":"pith:55A5MQN3","canonical_record":{"source":{"id":"astro-ph/0201459","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-01-28T23:21:06Z","cross_cats_sorted":[],"title_canon_sha256":"92831a44d3bd864ea69ceb8bec556ed8eb942db32dad745ed295206d09900757","abstract_canon_sha256":"def680cdba0efe2f3aa4fc04ceb98342002724cad99abc00ec23b51aba948ff4"},"schema_version":"1.0"},"canonical_sha256":"ef41d641bb9a5870167aa7d1e48b5eb22e9ec7aeaed273db420e0464ca7df69f","source":{"kind":"arxiv","id":"astro-ph/0201459","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0201459","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0201459v1","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0201459","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"pith_short_12","alias_value":"55A5MQN3TJMH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"55A5MQN3TJMHAFT2","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"55A5MQN3","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:55A5MQN3TJMHAFT2U7I6JC26WI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0201459","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-01-28T23:21:06Z","cross_cats_sorted":[],"title_canon_sha256":"92831a44d3bd864ea69ceb8bec556ed8eb942db32dad745ed295206d09900757","abstract_canon_sha256":"def680cdba0efe2f3aa4fc04ceb98342002724cad99abc00ec23b51aba948ff4"},"schema_version":"1.0"},"canonical_sha256":"ef41d641bb9a5870167aa7d1e48b5eb22e9ec7aeaed273db420e0464ca7df69f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:43.309298Z","signature_b64":"h+O0OvUn8a2TIIHSZwsumzh1QUk0C4dk/Zg9f+r5ovfGsMF3dMQmcGqMx+dRBdvAr0+1E5WdMB3Wg8FxMrZaBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef41d641bb9a5870167aa7d1e48b5eb22e9ec7aeaed273db420e0464ca7df69f","last_reissued_at":"2026-05-18T01:40:43.308515Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:43.308515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0201459","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":"2026-05-18T01:40:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NiX5pERyeNi/wgExB5aGFoAuUMnmFNdmuPUCtOP8+q5ff9mWc62CvMe3etmM6g8AVqw4fgPp5e8V9bA1S3EhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:43:14.315676Z"},"content_sha256":"a0c4a9dd1a1a0277a3ec0a545de12ae07ec68c3585c8b7817a7807dc226c026d","schema_version":"1.0","event_id":"sha256:a0c4a9dd1a1a0277a3ec0a545de12ae07ec68c3585c8b7817a7807dc226c026d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:55A5MQN3TJMHAFT2U7I6JC26WI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HI Observations of the Stephan's Quintet","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B.A. Williams, L. Verdes-Montenegro, M. S. Yun","submitted_at":"2002-01-28T23:21:06Z","abstract_excerpt":"Using the VLA, we have made spectral-line and continuum observations of the neutral hydrogen in the direction of the compact group of galaxies Stephan's Quintet. The high-velocity clouds between 5600 and 6600 km/s, the disk of the foreground galaxy, NGC 7320, at 800 km/s, the extended continuum ridge near the center of the group, and 3 faint dwarf-like galaxies in the surrounding field were imaged with C, CS, and D arrays. Four of the HI clouds previously detected are confirmed. The two largest HI features are coincident with and concentrated mainly along separate large tidal tails that extend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0201459","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":""},"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":"2026-05-18T01:40:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IctLL1E/qvl3l8iEn33TNDBBb145JdmQnO3jMqaf0XhVOZUFag6rTdRUFfYc5yhZsnXti/fTQ5wFZikGjKT8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:43:14.316038Z"},"content_sha256":"afbec3fa7e6745a8f59bc0a85200d185d507e57e23cb8f6a5d60826e95f3fa13","schema_version":"1.0","event_id":"sha256:afbec3fa7e6745a8f59bc0a85200d185d507e57e23cb8f6a5d60826e95f3fa13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55A5MQN3TJMHAFT2U7I6JC26WI/bundle.json","state_url":"https://pith.science/pith/55A5MQN3TJMHAFT2U7I6JC26WI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55A5MQN3TJMHAFT2U7I6JC26WI/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":"2026-06-07T14:43:14Z","links":{"resolver":"https://pith.science/pith/55A5MQN3TJMHAFT2U7I6JC26WI","bundle":"https://pith.science/pith/55A5MQN3TJMHAFT2U7I6JC26WI/bundle.json","state":"https://pith.science/pith/55A5MQN3TJMHAFT2U7I6JC26WI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55A5MQN3TJMHAFT2U7I6JC26WI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:55A5MQN3TJMHAFT2U7I6JC26WI","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":"def680cdba0efe2f3aa4fc04ceb98342002724cad99abc00ec23b51aba948ff4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-01-28T23:21:06Z","title_canon_sha256":"92831a44d3bd864ea69ceb8bec556ed8eb942db32dad745ed295206d09900757"},"schema_version":"1.0","source":{"id":"astro-ph/0201459","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0201459","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0201459v1","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0201459","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"pith_short_12","alias_value":"55A5MQN3TJMH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"55A5MQN3TJMHAFT2","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"55A5MQN3","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:afbec3fa7e6745a8f59bc0a85200d185d507e57e23cb8f6a5d60826e95f3fa13","target":"graph","created_at":"2026-05-18T01:40:43Z","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"},"paper":{"abstract_excerpt":"Using the VLA, we have made spectral-line and continuum observations of the neutral hydrogen in the direction of the compact group of galaxies Stephan's Quintet. The high-velocity clouds between 5600 and 6600 km/s, the disk of the foreground galaxy, NGC 7320, at 800 km/s, the extended continuum ridge near the center of the group, and 3 faint dwarf-like galaxies in the surrounding field were imaged with C, CS, and D arrays. Four of the HI clouds previously detected are confirmed. The two largest HI features are coincident with and concentrated mainly along separate large tidal tails that extend","authors_text":"B.A. Williams, L. Verdes-Montenegro, M. S. Yun","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-01-28T23:21:06Z","title":"HI Observations of the Stephan's Quintet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0201459","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:a0c4a9dd1a1a0277a3ec0a545de12ae07ec68c3585c8b7817a7807dc226c026d","target":"record","created_at":"2026-05-18T01:40:43Z","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":"def680cdba0efe2f3aa4fc04ceb98342002724cad99abc00ec23b51aba948ff4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-01-28T23:21:06Z","title_canon_sha256":"92831a44d3bd864ea69ceb8bec556ed8eb942db32dad745ed295206d09900757"},"schema_version":"1.0","source":{"id":"astro-ph/0201459","kind":"arxiv","version":1}},"canonical_sha256":"ef41d641bb9a5870167aa7d1e48b5eb22e9ec7aeaed273db420e0464ca7df69f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef41d641bb9a5870167aa7d1e48b5eb22e9ec7aeaed273db420e0464ca7df69f","first_computed_at":"2026-05-18T01:40:43.308515Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:43.308515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h+O0OvUn8a2TIIHSZwsumzh1QUk0C4dk/Zg9f+r5ovfGsMF3dMQmcGqMx+dRBdvAr0+1E5WdMB3Wg8FxMrZaBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:43.309298Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0201459","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0c4a9dd1a1a0277a3ec0a545de12ae07ec68c3585c8b7817a7807dc226c026d","sha256:afbec3fa7e6745a8f59bc0a85200d185d507e57e23cb8f6a5d60826e95f3fa13"],"state_sha256":"19c58269c418151a4fe404abfccb92148396e4ddf27980462f40d8324b4a950e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wTs0C8mDCiMze5SVTNqslIkCC5C+4Kx8ViEujxZuZcUAU3opJtmg+ANkz1zVHWUKefWHN11A1zqswTWsTHkwAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T14:43:14.317910Z","bundle_sha256":"0409abf9b0c59edadd0ffc85405eb73e62a409ecc57275cf7b54440fdbd7a9ef"}}