{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YHP5TMSVYIZBC3WENOVCANEBF5","short_pith_number":"pith:YHP5TMSV","canonical_record":{"source":{"id":"1302.1018","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-05T12:52:44Z","cross_cats_sorted":[],"title_canon_sha256":"f4b677d4d21ba9fe8f2f035dcd70719b5b8278c7457c5fe7d32f1fa35612dd86","abstract_canon_sha256":"762fcbd17e892b7dde16a2581f8c6faef6579ab74e58662717a8f0241192cc50"},"schema_version":"1.0"},"canonical_sha256":"c1dfd9b255c232116ec46baa2034812f6344720a945231ff896b825d15831f13","source":{"kind":"arxiv","id":"1302.1018","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1018","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1018v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1018","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"YHP5TMSVYIZB","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YHP5TMSVYIZBC3WE","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YHP5TMSV","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YHP5TMSVYIZBC3WENOVCANEBF5","target":"record","payload":{"canonical_record":{"source":{"id":"1302.1018","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-05T12:52:44Z","cross_cats_sorted":[],"title_canon_sha256":"f4b677d4d21ba9fe8f2f035dcd70719b5b8278c7457c5fe7d32f1fa35612dd86","abstract_canon_sha256":"762fcbd17e892b7dde16a2581f8c6faef6579ab74e58662717a8f0241192cc50"},"schema_version":"1.0"},"canonical_sha256":"c1dfd9b255c232116ec46baa2034812f6344720a945231ff896b825d15831f13","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:50.357702Z","signature_b64":"q6uUw+WfUlDcEMshMCas3Hg7gfLgbick+F+KNvxzarM5l0SAqJNSP96WENIPpOUmcd9goRz5oMIKEl3isX2CCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1dfd9b255c232116ec46baa2034812f6344720a945231ff896b825d15831f13","last_reissued_at":"2026-05-18T01:51:50.357014Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:50.357014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.1018","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lliNOri36o2k/NNv4ltlddALcK7Kl/nwCo0EHAjgQQcjIuvZIc4U82zbaHO7eVcQJs+uNOsncN2jecG/+1KWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T21:01:06.127079Z"},"content_sha256":"82297969a8931a26126649fca59a3579709ab2626301f916d894ba7312bf90cf","schema_version":"1.0","event_id":"sha256:82297969a8931a26126649fca59a3579709ab2626301f916d894ba7312bf90cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YHP5TMSVYIZBC3WENOVCANEBF5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long-term spectropolarimetric monitoring of the cool supergiant Betelgeuse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Chiavassa, G. Perrin, G. Wade, I. Bedecarrax, J.-F. Donati, J. Grunhut, M. Auri\\`ere, P. Petit, R. Konstantinova-Antova","submitted_at":"2013-02-05T12:52:44Z","abstract_excerpt":"We report on a long-term monitoring of the cool supergiant Betelgeuse, using the NARVAL and ESPaDOnS high-resolution spectropolarimeters, respectively installed at Telescope Bernard Lyot (Pic du Midi Observatory, France) and at the Canada-France-Hawaii Telescope (Mauna Kea Observatory, Hawaii). The data set, constituted of circularly polarized (Stokes V) and intensity (Stokes I) spectra, was collected between 2010 and 2012. We investigate here the temporal evolution of magnetic field, convection and temperature at photospheric level, using simultaneous measurements of the longitudinal magnetic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1018","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rqC4KajHAQAgFQEdEIr3NbaekhUloGdIvTlaL2dJzPvepkzf8j0kGfVKmvwa5mpRHYoeo77Podx3E4VLpLABBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T21:01:06.127740Z"},"content_sha256":"6fe27147f2300d6f1b6510ab971fb748a0338deae1c094a5f8362e974ac605cc","schema_version":"1.0","event_id":"sha256:6fe27147f2300d6f1b6510ab971fb748a0338deae1c094a5f8362e974ac605cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YHP5TMSVYIZBC3WENOVCANEBF5/bundle.json","state_url":"https://pith.science/pith/YHP5TMSVYIZBC3WENOVCANEBF5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YHP5TMSVYIZBC3WENOVCANEBF5/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":"2026-05-24T21:01:06Z","links":{"resolver":"https://pith.science/pith/YHP5TMSVYIZBC3WENOVCANEBF5","bundle":"https://pith.science/pith/YHP5TMSVYIZBC3WENOVCANEBF5/bundle.json","state":"https://pith.science/pith/YHP5TMSVYIZBC3WENOVCANEBF5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YHP5TMSVYIZBC3WENOVCANEBF5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YHP5TMSVYIZBC3WENOVCANEBF5","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":"762fcbd17e892b7dde16a2581f8c6faef6579ab74e58662717a8f0241192cc50","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-05T12:52:44Z","title_canon_sha256":"f4b677d4d21ba9fe8f2f035dcd70719b5b8278c7457c5fe7d32f1fa35612dd86"},"schema_version":"1.0","source":{"id":"1302.1018","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1018","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1018v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1018","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"YHP5TMSVYIZB","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YHP5TMSVYIZBC3WE","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YHP5TMSV","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:6fe27147f2300d6f1b6510ab971fb748a0338deae1c094a5f8362e974ac605cc","target":"graph","created_at":"2026-05-18T01:51:50Z","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 report on a long-term monitoring of the cool supergiant Betelgeuse, using the NARVAL and ESPaDOnS high-resolution spectropolarimeters, respectively installed at Telescope Bernard Lyot (Pic du Midi Observatory, France) and at the Canada-France-Hawaii Telescope (Mauna Kea Observatory, Hawaii). The data set, constituted of circularly polarized (Stokes V) and intensity (Stokes I) spectra, was collected between 2010 and 2012. We investigate here the temporal evolution of magnetic field, convection and temperature at photospheric level, using simultaneous measurements of the longitudinal magnetic","authors_text":"A. Chiavassa, G. Perrin, G. Wade, I. Bedecarrax, J.-F. Donati, J. Grunhut, M. Auri\\`ere, P. Petit, R. Konstantinova-Antova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-05T12:52:44Z","title":"Long-term spectropolarimetric monitoring of the cool supergiant Betelgeuse"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1018","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":"sha256:82297969a8931a26126649fca59a3579709ab2626301f916d894ba7312bf90cf","target":"record","created_at":"2026-05-18T01:51:50Z","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":"762fcbd17e892b7dde16a2581f8c6faef6579ab74e58662717a8f0241192cc50","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-05T12:52:44Z","title_canon_sha256":"f4b677d4d21ba9fe8f2f035dcd70719b5b8278c7457c5fe7d32f1fa35612dd86"},"schema_version":"1.0","source":{"id":"1302.1018","kind":"arxiv","version":1}},"canonical_sha256":"c1dfd9b255c232116ec46baa2034812f6344720a945231ff896b825d15831f13","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1dfd9b255c232116ec46baa2034812f6344720a945231ff896b825d15831f13","first_computed_at":"2026-05-18T01:51:50.357014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:50.357014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q6uUw+WfUlDcEMshMCas3Hg7gfLgbick+F+KNvxzarM5l0SAqJNSP96WENIPpOUmcd9goRz5oMIKEl3isX2CCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:50.357702Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.1018","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82297969a8931a26126649fca59a3579709ab2626301f916d894ba7312bf90cf","sha256:6fe27147f2300d6f1b6510ab971fb748a0338deae1c094a5f8362e974ac605cc"],"state_sha256":"7e5175b7c8a69d1ed7c755a6f1ba1240c6e3348c601bfea69e63c79cf717e04f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V4AAx3q4DQOhsZnKeUJKailaD1eRlkWlzO0b0aXrE2a36aMJGLHZKB7yxKrIzyKiD04JOOC6VEQQgCihM1DdDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T21:01:06.130692Z","bundle_sha256":"92ff64e9b0464b9d93c2698d6a1362c556c32366d86ead7d40df53a91162d4a5"}}