{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:4325IJB4JSU45JRDHTKYWAZ4WH","short_pith_number":"pith:4325IJB4","canonical_record":{"source":{"id":"2303.03998","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T15:54:15Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"8cb41814b2fdfba160f5f6f27939898cd6486f20b1eec309d8e39535ed07e4ec","abstract_canon_sha256":"b7c0ca5ef7efc676e3e5e9abe9db44cb33ca44f19fded9e66691df03d9b91443"},"schema_version":"1.0"},"canonical_sha256":"e6f5d4243c4ca9cea6233cd58b033cb1d2d8dfc79f62d763e5364d11d0517798","source":{"kind":"arxiv","id":"2303.03998","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.03998","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"arxiv_version","alias_value":"2303.03998v1","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.03998","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_12","alias_value":"4325IJB4JSU4","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_16","alias_value":"4325IJB4JSU45JRD","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_8","alias_value":"4325IJB4","created_at":"2026-07-05T06:32:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:4325IJB4JSU45JRDHTKYWAZ4WH","target":"record","payload":{"canonical_record":{"source":{"id":"2303.03998","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T15:54:15Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"8cb41814b2fdfba160f5f6f27939898cd6486f20b1eec309d8e39535ed07e4ec","abstract_canon_sha256":"b7c0ca5ef7efc676e3e5e9abe9db44cb33ca44f19fded9e66691df03d9b91443"},"schema_version":"1.0"},"canonical_sha256":"e6f5d4243c4ca9cea6233cd58b033cb1d2d8dfc79f62d763e5364d11d0517798","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:32:26.644128Z","signature_b64":"+KZUA1foRSwix9qnr5ob2jBzg2xOJTYaob/RdLpNK24MJSEVFq70BLx3cJk2TmnNEmzd8P54ttCUkjl/pEW+BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6f5d4243c4ca9cea6233cd58b033cb1d2d8dfc79f62d763e5364d11d0517798","last_reissued_at":"2026-07-05T06:32:26.643473Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:32:26.643473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.03998","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":"2026-07-05T06:32:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hc03sig+he8XjBQZgbuTA5ijysQh1Nk5PejTtgjCxFOqNUUFaHjgSae8m+XQJ+psgd0K2S9s1g36O2fu7EW4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:06:21.704462Z"},"content_sha256":"1c3085258b3ba75bd820559c9528383a6867a61349cd8321e2fc46c2274501f0","schema_version":"1.0","event_id":"sha256:1c3085258b3ba75bd820559c9528383a6867a61349cd8321e2fc46c2274501f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:4325IJB4JSU45JRDHTKYWAZ4WH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterisation of stellar activity of M dwarfs. I. Long-timescale variability in a large sample and detection of new cycles","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. Lovis, G. Gaisn\\'e, L. Mignon, N. Astudillo-Defru, N. C. Santos, N. Meunier, S. Udry, T. Forveille, X. Bonfils, X. Delfosse","submitted_at":"2023-03-07T15:54:15Z","abstract_excerpt":"M dwarfs are active stars that exhibit variability in chromospheric emission and photometry at short and long timescales, including long cycles that are related to dynamo processes. This activity also impacts the search for exoplanets because it affects the radial velocities. We analysed a large sample of 177 M dwarfs observed with HARPS (2003-2020) in order to characterise the long-term variability of these stars. We compared the variability obtained in three chromospheric activity indices (Ca II H & K, the Na D doublet, and Halpha) and with ASAS photometry. We focused on the detailed analysi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.03998","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/2303.03998/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":"2026-07-05T06:32:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NMvugB4yi5mbEMILfbAG0Ka5AUVFQn/ju1/1mzHFIMmcTJUwbmVPwx4mgxvoQkvDJUTt1iuFOaV8l13Ei+yjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:06:21.705021Z"},"content_sha256":"108f0ac3937c22d1abec02dc7d49b543f09ad07d75051e7a3e2731caf3c7e104","schema_version":"1.0","event_id":"sha256:108f0ac3937c22d1abec02dc7d49b543f09ad07d75051e7a3e2731caf3c7e104"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4325IJB4JSU45JRDHTKYWAZ4WH/bundle.json","state_url":"https://pith.science/pith/4325IJB4JSU45JRDHTKYWAZ4WH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4325IJB4JSU45JRDHTKYWAZ4WH/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":"2026-08-06T13:06:21Z","links":{"resolver":"https://pith.science/pith/4325IJB4JSU45JRDHTKYWAZ4WH","bundle":"https://pith.science/pith/4325IJB4JSU45JRDHTKYWAZ4WH/bundle.json","state":"https://pith.science/pith/4325IJB4JSU45JRDHTKYWAZ4WH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4325IJB4JSU45JRDHTKYWAZ4WH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:4325IJB4JSU45JRDHTKYWAZ4WH","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":"b7c0ca5ef7efc676e3e5e9abe9db44cb33ca44f19fded9e66691df03d9b91443","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T15:54:15Z","title_canon_sha256":"8cb41814b2fdfba160f5f6f27939898cd6486f20b1eec309d8e39535ed07e4ec"},"schema_version":"1.0","source":{"id":"2303.03998","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.03998","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"arxiv_version","alias_value":"2303.03998v1","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.03998","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_12","alias_value":"4325IJB4JSU4","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_16","alias_value":"4325IJB4JSU45JRD","created_at":"2026-07-05T06:32:26Z"},{"alias_kind":"pith_short_8","alias_value":"4325IJB4","created_at":"2026-07-05T06:32:26Z"}],"graph_snapshots":[{"event_id":"sha256:108f0ac3937c22d1abec02dc7d49b543f09ad07d75051e7a3e2731caf3c7e104","target":"graph","created_at":"2026-07-05T06:32:26Z","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/2303.03998/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"M dwarfs are active stars that exhibit variability in chromospheric emission and photometry at short and long timescales, including long cycles that are related to dynamo processes. This activity also impacts the search for exoplanets because it affects the radial velocities. We analysed a large sample of 177 M dwarfs observed with HARPS (2003-2020) in order to characterise the long-term variability of these stars. We compared the variability obtained in three chromospheric activity indices (Ca II H & K, the Na D doublet, and Halpha) and with ASAS photometry. We focused on the detailed analysi","authors_text":"C. Lovis, G. Gaisn\\'e, L. Mignon, N. Astudillo-Defru, N. C. Santos, N. Meunier, S. Udry, T. Forveille, X. Bonfils, X. Delfosse","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T15:54:15Z","title":"Characterisation of stellar activity of M dwarfs. I. Long-timescale variability in a large sample and detection of new cycles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.03998","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":"sha256:1c3085258b3ba75bd820559c9528383a6867a61349cd8321e2fc46c2274501f0","target":"record","created_at":"2026-07-05T06:32:26Z","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":"b7c0ca5ef7efc676e3e5e9abe9db44cb33ca44f19fded9e66691df03d9b91443","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T15:54:15Z","title_canon_sha256":"8cb41814b2fdfba160f5f6f27939898cd6486f20b1eec309d8e39535ed07e4ec"},"schema_version":"1.0","source":{"id":"2303.03998","kind":"arxiv","version":1}},"canonical_sha256":"e6f5d4243c4ca9cea6233cd58b033cb1d2d8dfc79f62d763e5364d11d0517798","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6f5d4243c4ca9cea6233cd58b033cb1d2d8dfc79f62d763e5364d11d0517798","first_computed_at":"2026-07-05T06:32:26.643473Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:32:26.643473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+KZUA1foRSwix9qnr5ob2jBzg2xOJTYaob/RdLpNK24MJSEVFq70BLx3cJk2TmnNEmzd8P54ttCUkjl/pEW+BA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:32:26.644128Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.03998","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c3085258b3ba75bd820559c9528383a6867a61349cd8321e2fc46c2274501f0","sha256:108f0ac3937c22d1abec02dc7d49b543f09ad07d75051e7a3e2731caf3c7e104"],"state_sha256":"3d97980172281762f4d2d3d6e0a85fa8d57f2414875d7344bffde71a1c2ba0e5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fMvh567mm6c4/CDn00AIpY7OFap/cUHNkYULKJCUwc2HpCpVmgicUUV/32+QZgDPLBcFl3L62Rq5iP6ynwMNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T13:06:21.710103Z","bundle_sha256":"bf3ca47b1409d9a247e0e3140edbc462400409d776003ac1b4c014360fb6c26a"}}