{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2O3ELJKDMB4SV7N3U6LC5P475V","short_pith_number":"pith:2O3ELJKD","canonical_record":{"source":{"id":"1612.02669","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-08T14:39:52Z","cross_cats_sorted":[],"title_canon_sha256":"eb4e3672a0156c02303040146398995326591721d20920bf49cb35ab3b261f1e","abstract_canon_sha256":"c1b7b89900cc7cf36d83c6471395e08e5be1f28502f348e65950b4b2766171a2"},"schema_version":"1.0"},"canonical_sha256":"d3b645a54360792afdbba7962ebf9fed736b280954535acddc69eaf828d159ee","source":{"kind":"arxiv","id":"1612.02669","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.02669","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"arxiv_version","alias_value":"1612.02669v1","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.02669","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"pith_short_12","alias_value":"2O3ELJKDMB4S","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2O3ELJKDMB4SV7N3","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2O3ELJKD","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2O3ELJKDMB4SV7N3U6LC5P475V","target":"record","payload":{"canonical_record":{"source":{"id":"1612.02669","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-08T14:39:52Z","cross_cats_sorted":[],"title_canon_sha256":"eb4e3672a0156c02303040146398995326591721d20920bf49cb35ab3b261f1e","abstract_canon_sha256":"c1b7b89900cc7cf36d83c6471395e08e5be1f28502f348e65950b4b2766171a2"},"schema_version":"1.0"},"canonical_sha256":"d3b645a54360792afdbba7962ebf9fed736b280954535acddc69eaf828d159ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:10.858275Z","signature_b64":"aCYpdbu2TFsyhYhTgQrMePm4rzeHbqGrOW63GNwIAhyZMAiHUaT5bqOQfE28gsee+x6a+CIkzjdJDacOv1qODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3b645a54360792afdbba7962ebf9fed736b280954535acddc69eaf828d159ee","last_reissued_at":"2026-05-18T00:49:10.857598Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:10.857598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.02669","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":"2026-05-18T00:49:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FW11ZQdv4KNZ/EQZ1fRY93XpfaJqPw5K0tAd48zYGh4MK8Mp14wDDPPEahrbyKXElA6yWK1C8rJ5NtGxUYzMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:37:37.157345Z"},"content_sha256":"94b0c322fc8e57d5b415b118e9e0d753739dc31e5f9d30e933406c48a8a62d92","schema_version":"1.0","event_id":"sha256:94b0c322fc8e57d5b415b118e9e0d753739dc31e5f9d30e933406c48a8a62d92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2O3ELJKDMB4SV7N3U6LC5P475V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic field structure in single late-type giants: The weak G-band giant 37 Comae from 2008 to 2011","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ana Palacios, Corinne Charbonnel, Gregg A. Wade, Michel Auriere, Natalia A. Drake, Pascal Petit, Renada Konstantinova-Antova, Svetla Tsvetkova","submitted_at":"2016-12-08T14:39:52Z","abstract_excerpt":"This work studies the magnetic activity of the late-type giant 37 Com. This star belongs to the group of weak G-band stars that present very strong carbon deficiency in their photospheres. The paper is a part of a global investigation into the properties and origin of magnetic fields in cool giants.\n  We use spectropolarimetric data, which allows the simultaneous measurement of the longitudinal magnetic field $B_{l}$, line activity indicators (H$\\alpha$, Ca\\,{\\sc ii} IRT, S-index) and radial velocity of the star, and consequently perform a direct comparison of their time variability. Mean Stok"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02669","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":"2026-05-18T00:49:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3IqcEtaCGi8EQvu9kB6WqWEzLAJJTFKexjyTvLtvCFoAep2vtfzy7E5FeKShrVsEPeQmarm3tYMF2PgaogpVBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:37:37.157760Z"},"content_sha256":"aa46bb3b220628698c6dcfddd590b59bf98217d1f1b2714ffbf4a6acae3cd6d5","schema_version":"1.0","event_id":"sha256:aa46bb3b220628698c6dcfddd590b59bf98217d1f1b2714ffbf4a6acae3cd6d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2O3ELJKDMB4SV7N3U6LC5P475V/bundle.json","state_url":"https://pith.science/pith/2O3ELJKDMB4SV7N3U6LC5P475V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2O3ELJKDMB4SV7N3U6LC5P475V/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":"2026-05-28T17:37:37Z","links":{"resolver":"https://pith.science/pith/2O3ELJKDMB4SV7N3U6LC5P475V","bundle":"https://pith.science/pith/2O3ELJKDMB4SV7N3U6LC5P475V/bundle.json","state":"https://pith.science/pith/2O3ELJKDMB4SV7N3U6LC5P475V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2O3ELJKDMB4SV7N3U6LC5P475V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2O3ELJKDMB4SV7N3U6LC5P475V","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":"c1b7b89900cc7cf36d83c6471395e08e5be1f28502f348e65950b4b2766171a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-08T14:39:52Z","title_canon_sha256":"eb4e3672a0156c02303040146398995326591721d20920bf49cb35ab3b261f1e"},"schema_version":"1.0","source":{"id":"1612.02669","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.02669","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"arxiv_version","alias_value":"1612.02669v1","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.02669","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"pith_short_12","alias_value":"2O3ELJKDMB4S","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2O3ELJKDMB4SV7N3","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2O3ELJKD","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:aa46bb3b220628698c6dcfddd590b59bf98217d1f1b2714ffbf4a6acae3cd6d5","target":"graph","created_at":"2026-05-18T00:49:10Z","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":"This work studies the magnetic activity of the late-type giant 37 Com. This star belongs to the group of weak G-band stars that present very strong carbon deficiency in their photospheres. The paper is a part of a global investigation into the properties and origin of magnetic fields in cool giants.\n  We use spectropolarimetric data, which allows the simultaneous measurement of the longitudinal magnetic field $B_{l}$, line activity indicators (H$\\alpha$, Ca\\,{\\sc ii} IRT, S-index) and radial velocity of the star, and consequently perform a direct comparison of their time variability. Mean Stok","authors_text":"Ana Palacios, Corinne Charbonnel, Gregg A. Wade, Michel Auriere, Natalia A. Drake, Pascal Petit, Renada Konstantinova-Antova, Svetla Tsvetkova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-08T14:39:52Z","title":"Magnetic field structure in single late-type giants: The weak G-band giant 37 Comae from 2008 to 2011"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02669","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":"sha256:94b0c322fc8e57d5b415b118e9e0d753739dc31e5f9d30e933406c48a8a62d92","target":"record","created_at":"2026-05-18T00:49:10Z","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":"c1b7b89900cc7cf36d83c6471395e08e5be1f28502f348e65950b4b2766171a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-08T14:39:52Z","title_canon_sha256":"eb4e3672a0156c02303040146398995326591721d20920bf49cb35ab3b261f1e"},"schema_version":"1.0","source":{"id":"1612.02669","kind":"arxiv","version":1}},"canonical_sha256":"d3b645a54360792afdbba7962ebf9fed736b280954535acddc69eaf828d159ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3b645a54360792afdbba7962ebf9fed736b280954535acddc69eaf828d159ee","first_computed_at":"2026-05-18T00:49:10.857598Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:10.857598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aCYpdbu2TFsyhYhTgQrMePm4rzeHbqGrOW63GNwIAhyZMAiHUaT5bqOQfE28gsee+x6a+CIkzjdJDacOv1qODQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:10.858275Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.02669","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94b0c322fc8e57d5b415b118e9e0d753739dc31e5f9d30e933406c48a8a62d92","sha256:aa46bb3b220628698c6dcfddd590b59bf98217d1f1b2714ffbf4a6acae3cd6d5"],"state_sha256":"72f579a7601cb395e7345c750a306a627e61311fda4b873e545d11f4cc3e5f41"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LrvrSjp/2HJHgqNrP21clGmynAcgu7DZvkZxEsOmzCGtEY6Axw1kfP6QEUilBOU62b7+9nnOOQPwsr/BoMOKBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:37:37.160231Z","bundle_sha256":"4f42b58066cf9deec851745c882ddb389689bfb530aec944e2da515978a161f3"}}