{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:5INOAQII5GO5DNDXBUJB63ENHL","short_pith_number":"pith:5INOAQII","canonical_record":{"source":{"id":"2411.03089","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-05T13:37:15Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"74ad1aacd4f72490ce780d96a2264f58a4ee385559ce934dca8887b12d5d9cc5","abstract_canon_sha256":"99e19e61b5a07f750687f8a4ee80813e2a5b5c68d73b472438bc4efc90cc5e8c"},"schema_version":"1.0"},"canonical_sha256":"ea1ae04108e99dd1b4770d121f6c8d3af13f5939c022d0dfa8f0640ea78a7675","source":{"kind":"arxiv","id":"2411.03089","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.03089","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"arxiv_version","alias_value":"2411.03089v1","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.03089","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_12","alias_value":"5INOAQII5GO5","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_16","alias_value":"5INOAQII5GO5DNDX","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_8","alias_value":"5INOAQII","created_at":"2026-07-05T09:31:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:5INOAQII5GO5DNDXBUJB63ENHL","target":"record","payload":{"canonical_record":{"source":{"id":"2411.03089","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-05T13:37:15Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"74ad1aacd4f72490ce780d96a2264f58a4ee385559ce934dca8887b12d5d9cc5","abstract_canon_sha256":"99e19e61b5a07f750687f8a4ee80813e2a5b5c68d73b472438bc4efc90cc5e8c"},"schema_version":"1.0"},"canonical_sha256":"ea1ae04108e99dd1b4770d121f6c8d3af13f5939c022d0dfa8f0640ea78a7675","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:31:25.316246Z","signature_b64":"tUh2meJ2/upHFrEiQLx91fTbVPPoIrry236I86FZWS6a4l2nq/F3HFjmcRxTuGD95XGHL5z8gv9LpY+a1GSjBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea1ae04108e99dd1b4770d121f6c8d3af13f5939c022d0dfa8f0640ea78a7675","last_reissued_at":"2026-07-05T09:31:25.315690Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:31:25.315690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.03089","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":"2026-07-05T09:31:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oOIuSQW1yvMRkcbnD8vdtA484oNpyFPBMZQDds+IHc+gl6lMlBwUysprdvZNOaLCz6rgZPdugHkmR2NZ7y5aCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T10:21:55.323005Z"},"content_sha256":"aac75455324a15bc8dea63050fc6e1819cae435d2902f1698d582cc310fdba57","schema_version":"1.0","event_id":"sha256:aac75455324a15bc8dea63050fc6e1819cae435d2902f1698d582cc310fdba57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:5INOAQII5GO5DNDXBUJB63ENHL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SPIRou observations of the young planet-hosting star PDS 70","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"A. Carmona, \\'A. K\\'osp\\'al, C.F. Manara, C. Moutou, E. Artigau, E. Gaidos, F. M\\'enard, H. Shang, J. Bouvier, J. Dias do Nascimento, J.-F. Donati, J. Gregorio-Hetem, M. Takami, P.I. Cristofari, R. Doyon, S.H.P. Alencar, the SPIRou science team","submitted_at":"2024-11-05T13:37:15Z","abstract_excerpt":"This paper presents near-infrared spectropolarimetric and velocimetric observations of the young planet-hosting T Tauri star PDS 70, collected with SPIRou at the 3.6m Canada-France-Hawaii Telescope from 2020 to 2024. Clear Zeeman signatures from magnetic fields at the surface of PDS 70 are detected in our data set of 40 circularly polarized spectra. Longitudinal fields inferred from Zeeman signatures, ranging from -116 to 176 G, are modulated on a timescale of 3.008$\\pm$0.006 d, confirming that this is the rotation period of PDS 70. Applying Zeeman-Doppler imaging to subsets of unpolarized and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.03089","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/2411.03089/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":"2026-07-05T09:31:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xEFeMGr53cHl/aSjqqo/vNm4mf+2w1bUG7Ng6VxaVLrw4cSrYB9g4L+oJ5fgXZ4oUK0xrEsKNPjUNDAYjj2qBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T10:21:55.323739Z"},"content_sha256":"c4013aaac5d1adc4bc3477498b03880096d14f4c459b75b6db952ce21416b17d","schema_version":"1.0","event_id":"sha256:c4013aaac5d1adc4bc3477498b03880096d14f4c459b75b6db952ce21416b17d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5INOAQII5GO5DNDXBUJB63ENHL/bundle.json","state_url":"https://pith.science/pith/5INOAQII5GO5DNDXBUJB63ENHL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5INOAQII5GO5DNDXBUJB63ENHL/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":"2026-08-01T10:21:55Z","links":{"resolver":"https://pith.science/pith/5INOAQII5GO5DNDXBUJB63ENHL","bundle":"https://pith.science/pith/5INOAQII5GO5DNDXBUJB63ENHL/bundle.json","state":"https://pith.science/pith/5INOAQII5GO5DNDXBUJB63ENHL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5INOAQII5GO5DNDXBUJB63ENHL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:5INOAQII5GO5DNDXBUJB63ENHL","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":"99e19e61b5a07f750687f8a4ee80813e2a5b5c68d73b472438bc4efc90cc5e8c","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-05T13:37:15Z","title_canon_sha256":"74ad1aacd4f72490ce780d96a2264f58a4ee385559ce934dca8887b12d5d9cc5"},"schema_version":"1.0","source":{"id":"2411.03089","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.03089","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"arxiv_version","alias_value":"2411.03089v1","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.03089","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_12","alias_value":"5INOAQII5GO5","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_16","alias_value":"5INOAQII5GO5DNDX","created_at":"2026-07-05T09:31:25Z"},{"alias_kind":"pith_short_8","alias_value":"5INOAQII","created_at":"2026-07-05T09:31:25Z"}],"graph_snapshots":[{"event_id":"sha256:c4013aaac5d1adc4bc3477498b03880096d14f4c459b75b6db952ce21416b17d","target":"graph","created_at":"2026-07-05T09:31:25Z","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/2411.03089/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents near-infrared spectropolarimetric and velocimetric observations of the young planet-hosting T Tauri star PDS 70, collected with SPIRou at the 3.6m Canada-France-Hawaii Telescope from 2020 to 2024. Clear Zeeman signatures from magnetic fields at the surface of PDS 70 are detected in our data set of 40 circularly polarized spectra. Longitudinal fields inferred from Zeeman signatures, ranging from -116 to 176 G, are modulated on a timescale of 3.008$\\pm$0.006 d, confirming that this is the rotation period of PDS 70. Applying Zeeman-Doppler imaging to subsets of unpolarized and","authors_text":"A. Carmona, \\'A. K\\'osp\\'al, C.F. Manara, C. Moutou, E. Artigau, E. Gaidos, F. M\\'enard, H. Shang, J. Bouvier, J. Dias do Nascimento, J.-F. Donati, J. Gregorio-Hetem, M. Takami, P.I. Cristofari, R. Doyon, S.H.P. Alencar, the SPIRou science team","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-05T13:37:15Z","title":"SPIRou observations of the young planet-hosting star PDS 70"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.03089","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:aac75455324a15bc8dea63050fc6e1819cae435d2902f1698d582cc310fdba57","target":"record","created_at":"2026-07-05T09:31:25Z","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":"99e19e61b5a07f750687f8a4ee80813e2a5b5c68d73b472438bc4efc90cc5e8c","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-05T13:37:15Z","title_canon_sha256":"74ad1aacd4f72490ce780d96a2264f58a4ee385559ce934dca8887b12d5d9cc5"},"schema_version":"1.0","source":{"id":"2411.03089","kind":"arxiv","version":1}},"canonical_sha256":"ea1ae04108e99dd1b4770d121f6c8d3af13f5939c022d0dfa8f0640ea78a7675","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea1ae04108e99dd1b4770d121f6c8d3af13f5939c022d0dfa8f0640ea78a7675","first_computed_at":"2026-07-05T09:31:25.315690Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:31:25.315690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tUh2meJ2/upHFrEiQLx91fTbVPPoIrry236I86FZWS6a4l2nq/F3HFjmcRxTuGD95XGHL5z8gv9LpY+a1GSjBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:31:25.316246Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.03089","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aac75455324a15bc8dea63050fc6e1819cae435d2902f1698d582cc310fdba57","sha256:c4013aaac5d1adc4bc3477498b03880096d14f4c459b75b6db952ce21416b17d"],"state_sha256":"d11f16079257331fdd30e26b1b882c329c05ff79f9ec580f7ccaef127fe6e34d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t1+3rpXpMkYEltGDUI8NoxstnPRt/lHgwMaVcla07dJlBMijg51BUvk9Ctje1OKImHh2/6FXudq/GyMelt49Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T10:21:55.331332Z","bundle_sha256":"aa2a6f104330f626e3adbaccefece56c27d9efca8eb901cb0290082ce09f8b20"}}