{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WJO4YGHZU3F3KU5D52G2GJPI46","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":"cf2cc4a4bb230edc2be80e64555f5bb5adba93e0daf4ade8d525e1332d52e018","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-02-07T22:00:24Z","title_canon_sha256":"3e26234d23a3f9ac93a96948c85e841cff6656416211d49c0431c524ee386cfd"},"schema_version":"1.0","source":{"id":"1702.02213","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02213","created_at":"2026-05-18T00:51:06Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02213v1","created_at":"2026-05-18T00:51:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02213","created_at":"2026-05-18T00:51:06Z"},{"alias_kind":"pith_short_12","alias_value":"WJO4YGHZU3F3","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WJO4YGHZU3F3KU5D","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WJO4YGHZ","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:721f63cdeb57766e509e15ad0cd55aead59e2fdffc1f429ed366c1a99778f617","target":"graph","created_at":"2026-05-18T00:51:06Z","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":"Magnetic activity on stars manifests itself in the form of dark spots on the stellar surface, that cause modulation of a few percent in the light curve of the star as it rotates. When a planet eclipses its host star, it might cross in front of one of these spots creating a \"bump\" in the transit light curve. By modelling these spot signatures, it is possible to determine the physical properties of the spots such as size, temperature, and location. In turn, the monitoring of the spots longitude provides estimates of the stellar rotation and differential rotation. This technique was applied to th","authors_text":"A. Valio, J. P. Bravo, J. R. De Medeiros, R. Estrela, Y. Netto","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-02-07T22:00:24Z","title":"Activity and rotation of Kepler-17"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02213","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":"sha256:69d542fba9413e43789fa5e5b2dd9aacee2c6aa1f21c313c72cd07b9250fbeee","target":"record","created_at":"2026-05-18T00:51:06Z","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":"cf2cc4a4bb230edc2be80e64555f5bb5adba93e0daf4ade8d525e1332d52e018","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-02-07T22:00:24Z","title_canon_sha256":"3e26234d23a3f9ac93a96948c85e841cff6656416211d49c0431c524ee386cfd"},"schema_version":"1.0","source":{"id":"1702.02213","kind":"arxiv","version":1}},"canonical_sha256":"b25dcc18f9a6cbb553a3ee8da325e8e78549a0e22a26669dd688604f60be8013","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b25dcc18f9a6cbb553a3ee8da325e8e78549a0e22a26669dd688604f60be8013","first_computed_at":"2026-05-18T00:51:06.493986Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:06.493986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3J7mas/1oZvZXpESSdZJxK43uZRykxmccxm0Rk4tZnMe/nJO6IMusG9wST+YpKerSWh7HS+thtwRwNbVOptuCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:06.494481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.02213","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69d542fba9413e43789fa5e5b2dd9aacee2c6aa1f21c313c72cd07b9250fbeee","sha256:721f63cdeb57766e509e15ad0cd55aead59e2fdffc1f429ed366c1a99778f617"],"state_sha256":"25063a38054bb479be1630f9deb731f37676dac2a5cfc201e7931e835ae9cc5d"}