{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:SZJCLFPY5XJU2EEJWK7QXIPTYY","short_pith_number":"pith:SZJCLFPY","canonical_record":{"source":{"id":"1203.4787","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-21T17:15:49Z","cross_cats_sorted":[],"title_canon_sha256":"2b8e8869d8a4b2bf207ee503406a1ab03e7e6445611a6883632fc136fd02c34a","abstract_canon_sha256":"b342813bd3d4675653d37d854a465ace72a1d50600c1484c465e6c40bf61a8c6"},"schema_version":"1.0"},"canonical_sha256":"96522595f8edd34d1089b2bf0ba1f3c61bf386760820b562ec41fd5dc5d084cd","source":{"kind":"arxiv","id":"1203.4787","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4787","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4787v1","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4787","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"SZJCLFPY5XJU","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"SZJCLFPY5XJU2EEJ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"SZJCLFPY","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:SZJCLFPY5XJU2EEJWK7QXIPTYY","target":"record","payload":{"canonical_record":{"source":{"id":"1203.4787","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-21T17:15:49Z","cross_cats_sorted":[],"title_canon_sha256":"2b8e8869d8a4b2bf207ee503406a1ab03e7e6445611a6883632fc136fd02c34a","abstract_canon_sha256":"b342813bd3d4675653d37d854a465ace72a1d50600c1484c465e6c40bf61a8c6"},"schema_version":"1.0"},"canonical_sha256":"96522595f8edd34d1089b2bf0ba1f3c61bf386760820b562ec41fd5dc5d084cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:04.931928Z","signature_b64":"oEmG7tedvL6nVgHiYIFefwdzytyT3adP33w7QujkjGCKpnDCYdSrLrVG67r3ReOETU3BiTyRMH2KuwoG6OGpDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96522595f8edd34d1089b2bf0ba1f3c61bf386760820b562ec41fd5dc5d084cd","last_reissued_at":"2026-05-18T01:58:04.931488Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:04.931488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.4787","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":"2026-05-18T01:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PHTEcwbFT1LgQfI3wV2Wj7FNUd/Q/7E0ze++LGogyhuIOu9ym7AnekXkiT+n2w8d3TySlSZ5Rw1UWhT8Mfj3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:53:48.725041Z"},"content_sha256":"2f4d3000dc58d3f5b4a024c7c2c251dae7c4256e39d814dd3753fa8880709af2","schema_version":"1.0","event_id":"sha256:2f4d3000dc58d3f5b4a024c7c2c251dae7c4256e39d814dd3753fa8880709af2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:SZJCLFPY5XJU2EEJWK7QXIPTYY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hubble Space Telescope FUV Spectra of the Post-Common-Envelope Hyades Binary V471 Tauri","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. Lindler, D. Wickramasinghe, E. M. Sion, H. E. Bond, J. Dupuis, L. Ferrario, P. Godon","submitted_at":"2012-03-21T17:15:49Z","abstract_excerpt":"We have carried out an analysis of the HST STIS archival spectra of the magnetic white dwarf in the Hyades eclipsing-spectroscopic, post-common envelope binary V471 Tauri, time resolved on the orbit and on the X-ray rotational phase of the magnetic white dwarf. An HST STIS spectrum obtained during primary eclipse reveals a host of transition region/chromospheric emission features including N V (1238, 1242), Si IV (1393, 1402), C IV (1548, 1550) and He II (1640). The spectroscopic characteristics and emission line fluxes of the transition region/chromosphere of the very active, rapidly rotating"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4787","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":"2026-05-18T01:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gAVMM/hDLxrrInS0axqrVGg33GmibrOAysJN5OkKZWa7kiMBHwbosv8W9QxUNv6ygP6HWevRqkLNZ/EWzRStAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:53:48.725740Z"},"content_sha256":"f589f450be2859cf32f522cb507ca40b1c96d18ad93bf55c1e13c5079f4e97a1","schema_version":"1.0","event_id":"sha256:f589f450be2859cf32f522cb507ca40b1c96d18ad93bf55c1e13c5079f4e97a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/bundle.json","state_url":"https://pith.science/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/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":"2026-05-26T18:53:48Z","links":{"resolver":"https://pith.science/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY","bundle":"https://pith.science/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/bundle.json","state":"https://pith.science/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZJCLFPY5XJU2EEJWK7QXIPTYY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SZJCLFPY5XJU2EEJWK7QXIPTYY","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":"b342813bd3d4675653d37d854a465ace72a1d50600c1484c465e6c40bf61a8c6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-21T17:15:49Z","title_canon_sha256":"2b8e8869d8a4b2bf207ee503406a1ab03e7e6445611a6883632fc136fd02c34a"},"schema_version":"1.0","source":{"id":"1203.4787","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4787","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4787v1","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4787","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"SZJCLFPY5XJU","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"SZJCLFPY5XJU2EEJ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"SZJCLFPY","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:f589f450be2859cf32f522cb507ca40b1c96d18ad93bf55c1e13c5079f4e97a1","target":"graph","created_at":"2026-05-18T01:58:04Z","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":"We have carried out an analysis of the HST STIS archival spectra of the magnetic white dwarf in the Hyades eclipsing-spectroscopic, post-common envelope binary V471 Tauri, time resolved on the orbit and on the X-ray rotational phase of the magnetic white dwarf. An HST STIS spectrum obtained during primary eclipse reveals a host of transition region/chromospheric emission features including N V (1238, 1242), Si IV (1393, 1402), C IV (1548, 1550) and He II (1640). The spectroscopic characteristics and emission line fluxes of the transition region/chromosphere of the very active, rapidly rotating","authors_text":"D. Lindler, D. Wickramasinghe, E. M. Sion, H. E. Bond, J. Dupuis, L. Ferrario, P. Godon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-21T17:15:49Z","title":"Hubble Space Telescope FUV Spectra of the Post-Common-Envelope Hyades Binary V471 Tauri"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4787","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":"sha256:2f4d3000dc58d3f5b4a024c7c2c251dae7c4256e39d814dd3753fa8880709af2","target":"record","created_at":"2026-05-18T01:58:04Z","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":"b342813bd3d4675653d37d854a465ace72a1d50600c1484c465e6c40bf61a8c6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-21T17:15:49Z","title_canon_sha256":"2b8e8869d8a4b2bf207ee503406a1ab03e7e6445611a6883632fc136fd02c34a"},"schema_version":"1.0","source":{"id":"1203.4787","kind":"arxiv","version":1}},"canonical_sha256":"96522595f8edd34d1089b2bf0ba1f3c61bf386760820b562ec41fd5dc5d084cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96522595f8edd34d1089b2bf0ba1f3c61bf386760820b562ec41fd5dc5d084cd","first_computed_at":"2026-05-18T01:58:04.931488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:04.931488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oEmG7tedvL6nVgHiYIFefwdzytyT3adP33w7QujkjGCKpnDCYdSrLrVG67r3ReOETU3BiTyRMH2KuwoG6OGpDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:04.931928Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.4787","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f4d3000dc58d3f5b4a024c7c2c251dae7c4256e39d814dd3753fa8880709af2","sha256:f589f450be2859cf32f522cb507ca40b1c96d18ad93bf55c1e13c5079f4e97a1"],"state_sha256":"e636b8fcf005149cf42e6dc5c40d50a4606d89175db8eb59272d2473da6a8540"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nJoVcE0gEFSu4WF5Q0ge0cn11lcOfyON/KUcDOLYpEiABF6H3MPg93LwUFtjYZfOTlTgO2gCESy+90WE4v4WBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:53:48.729311Z","bundle_sha256":"8ec462c1602b00bb5dcfb72612ae2478726275e9b805bcf7475de53ccea1cc25"}}