{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EWKCE5MUJQQWZB5Y5ZSDUA4UTX","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":"ee80abf037b7c522facb5e9e448c50042da6d74eec455b7c2f2d037d0e5acf78","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-27T20:39:31Z","title_canon_sha256":"1f6b17ae49e61a3543469880b631c42565cf5887ae2838f91b487e289359e47e"},"schema_version":"1.0","source":{"id":"1610.09007","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.09007","created_at":"2026-05-18T00:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1610.09007v2","created_at":"2026-05-18T00:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.09007","created_at":"2026-05-18T00:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"EWKCE5MUJQQW","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"EWKCE5MUJQQWZB5Y","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"EWKCE5MU","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:a63a5a30adba308f8c7996725028eb1e53d7a801559f6b19f2073038ccbf2579","target":"graph","created_at":"2026-05-18T00:48:16Z","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":"Atmospheric magnetic fields in stars with convective envelopes heat stellar chromospheres. Starting with the historical Mount Wilson monitoring program, CaH&K lines have been widely used to trace stellar magnetic activity, and as a proxy for rotation period and consequently for stellar age. Monitoring stellar activity has also become essential in filtering out false-positives due to magnetic activity in extra-solar planet surveys. The Ca H&Kemission is traditionally quantified through the R'HK-index, which compares the chromospheric flux in the doublet to the overall bolometric flux of the sta","authors_text":"Christophe Lovis, Julien Rameau, Nicola Astudillo-Defru, Thierry Forveille, Xavier Bonfils, Xavier Delfosse","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-27T20:39:31Z","title":"Magnetic activity in the HARPS M-dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.09007","kind":"arxiv","version":2},"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:fa487f95d9dd8561d047b79cf25998aa8cf6f16b6824e8fae453dbe0e6bd69cb","target":"record","created_at":"2026-05-18T00:48:16Z","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":"ee80abf037b7c522facb5e9e448c50042da6d74eec455b7c2f2d037d0e5acf78","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-27T20:39:31Z","title_canon_sha256":"1f6b17ae49e61a3543469880b631c42565cf5887ae2838f91b487e289359e47e"},"schema_version":"1.0","source":{"id":"1610.09007","kind":"arxiv","version":2}},"canonical_sha256":"25942275944c216c87b8ee643a03949ddbfe2e2130a240f523d7ae7f218aeb44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25942275944c216c87b8ee643a03949ddbfe2e2130a240f523d7ae7f218aeb44","first_computed_at":"2026-05-18T00:48:16.546835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:16.546835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SFbEYUpXYxq+RnoiAMd6tqAVpf0GV3m4m6C4jSTZ0FR+M0Pg3Mjhly3UpvHPVpPpCECLgmgPYW8r7pTEKkIRCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:16.547553Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.09007","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa487f95d9dd8561d047b79cf25998aa8cf6f16b6824e8fae453dbe0e6bd69cb","sha256:a63a5a30adba308f8c7996725028eb1e53d7a801559f6b19f2073038ccbf2579"],"state_sha256":"2621942bb7a60169fcda4ea5f50934e272901c173bd92e31ff6b0ab07eeef6ec"}