{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OK5NXFQNCJOZYXEG54XN7T7Z66","short_pith_number":"pith:OK5NXFQN","canonical_record":{"source":{"id":"1904.04489","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-09T07:00:57Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"title_canon_sha256":"d3347aeb0a3eaf21cdbf98e55a5b3b8ae79b9f18ff72c3fc58891a6319427558","abstract_canon_sha256":"fdf77d6b919a80df4eadb9dff3c5dccc78eac532fb5447349afaece7b4f04065"},"schema_version":"1.0"},"canonical_sha256":"72badb960d125d9c5c86ef2edfcff9f79803addea7cb2576979b8793503182aa","source":{"kind":"arxiv","id":"1904.04489","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04489","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04489v1","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04489","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"OK5NXFQNCJOZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OK5NXFQNCJOZYXEG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OK5NXFQN","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OK5NXFQNCJOZYXEG54XN7T7Z66","target":"record","payload":{"canonical_record":{"source":{"id":"1904.04489","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-09T07:00:57Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"title_canon_sha256":"d3347aeb0a3eaf21cdbf98e55a5b3b8ae79b9f18ff72c3fc58891a6319427558","abstract_canon_sha256":"fdf77d6b919a80df4eadb9dff3c5dccc78eac532fb5447349afaece7b4f04065"},"schema_version":"1.0"},"canonical_sha256":"72badb960d125d9c5c86ef2edfcff9f79803addea7cb2576979b8793503182aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:34.652187Z","signature_b64":"rtc/gzj/yBDXL27j7i9uKhFXI0tjYanhP9YWAR+xLvyjHPYMfrWCCnCcxTyXM0gXXsSaX70/MYiy/9CTk8YTAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72badb960d125d9c5c86ef2edfcff9f79803addea7cb2576979b8793503182aa","last_reissued_at":"2026-05-17T23:43:34.651742Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:34.651742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.04489","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":"2026-05-17T23:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s92csFpCiVvCGJpEGA3j2eOUkC89W6ltaQT/13KhpaLitO0wDB7SMMVfZqVUKQL3oKC8y173MAMdVt/4yiIkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T13:45:54.979938Z"},"content_sha256":"21ca3e35888243a8074ca074e2a8fa65fb6d03d76df3f19b0ddd69125492a20c","schema_version":"1.0","event_id":"sha256:21ca3e35888243a8074ca074e2a8fa65fb6d03d76df3f19b0ddd69125492a20c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OK5NXFQNCJOZYXEG54XN7T7Z66","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stellar activity and rotation of the planet host Kepler-17 from long-term space-borne photometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. F. Lanza, A. S. Bonomo, A. Valio, H. Parviainen, S. Aigrain, Y. Netto","submitted_at":"2019-04-09T07:00:57Z","abstract_excerpt":"The study of young Sun-like stars is of fundamental importance to understand the magnetic activity and rotational evolution of the Sun. Space-borne photometry by the Kepler telescope provides unprecedented datasets to investigate these phenomena in Sun-like stars. We present a new analysis of the entire Kepler photometric time series of the moderately young Sun-like star Kepler-17 that is accompanied by a transiting hot Jupiter. We applied a maximum-entropy spot model to the long-cadence out-of-transit photometry of the target to derive maps of the starspot filling factor versus the longitude "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04489","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":"2026-05-17T23:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cfbZqaUdGZjejmW/dNOPhB4OBnbN2STeNH3ZfRknVjd/TMIoBVszEFjLgAeVtaZWHQUlGH1Fs42jXMBerhtsDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T13:45:54.980298Z"},"content_sha256":"d3a653e6f1ab510ac8b1e2d2ee23ac90ad273fdc616f6c6fc7fbe106ceaafd6c","schema_version":"1.0","event_id":"sha256:d3a653e6f1ab510ac8b1e2d2ee23ac90ad273fdc616f6c6fc7fbe106ceaafd6c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/bundle.json","state_url":"https://pith.science/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/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":"2026-06-11T13:45:54Z","links":{"resolver":"https://pith.science/pith/OK5NXFQNCJOZYXEG54XN7T7Z66","bundle":"https://pith.science/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/bundle.json","state":"https://pith.science/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OK5NXFQNCJOZYXEG54XN7T7Z66/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OK5NXFQNCJOZYXEG54XN7T7Z66","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":"fdf77d6b919a80df4eadb9dff3c5dccc78eac532fb5447349afaece7b4f04065","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-09T07:00:57Z","title_canon_sha256":"d3347aeb0a3eaf21cdbf98e55a5b3b8ae79b9f18ff72c3fc58891a6319427558"},"schema_version":"1.0","source":{"id":"1904.04489","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04489","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04489v1","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04489","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"OK5NXFQNCJOZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OK5NXFQNCJOZYXEG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OK5NXFQN","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:d3a653e6f1ab510ac8b1e2d2ee23ac90ad273fdc616f6c6fc7fbe106ceaafd6c","target":"graph","created_at":"2026-05-17T23:43:34Z","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":"The study of young Sun-like stars is of fundamental importance to understand the magnetic activity and rotational evolution of the Sun. Space-borne photometry by the Kepler telescope provides unprecedented datasets to investigate these phenomena in Sun-like stars. We present a new analysis of the entire Kepler photometric time series of the moderately young Sun-like star Kepler-17 that is accompanied by a transiting hot Jupiter. We applied a maximum-entropy spot model to the long-cadence out-of-transit photometry of the target to derive maps of the starspot filling factor versus the longitude ","authors_text":"A. F. Lanza, A. S. Bonomo, A. Valio, H. Parviainen, S. Aigrain, Y. Netto","cross_cats":["astro-ph.EP","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-09T07:00:57Z","title":"Stellar activity and rotation of the planet host Kepler-17 from long-term space-borne photometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04489","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":"sha256:21ca3e35888243a8074ca074e2a8fa65fb6d03d76df3f19b0ddd69125492a20c","target":"record","created_at":"2026-05-17T23:43:34Z","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":"fdf77d6b919a80df4eadb9dff3c5dccc78eac532fb5447349afaece7b4f04065","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-09T07:00:57Z","title_canon_sha256":"d3347aeb0a3eaf21cdbf98e55a5b3b8ae79b9f18ff72c3fc58891a6319427558"},"schema_version":"1.0","source":{"id":"1904.04489","kind":"arxiv","version":1}},"canonical_sha256":"72badb960d125d9c5c86ef2edfcff9f79803addea7cb2576979b8793503182aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72badb960d125d9c5c86ef2edfcff9f79803addea7cb2576979b8793503182aa","first_computed_at":"2026-05-17T23:43:34.651742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:34.651742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rtc/gzj/yBDXL27j7i9uKhFXI0tjYanhP9YWAR+xLvyjHPYMfrWCCnCcxTyXM0gXXsSaX70/MYiy/9CTk8YTAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:34.652187Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.04489","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:21ca3e35888243a8074ca074e2a8fa65fb6d03d76df3f19b0ddd69125492a20c","sha256:d3a653e6f1ab510ac8b1e2d2ee23ac90ad273fdc616f6c6fc7fbe106ceaafd6c"],"state_sha256":"2455eb7c1a70ac9ce10da2e4b7ee17523bfce8d43df46103ad2ef03ec9ba4502"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7E2TpEiHe339bgMHv+SnP4C3lY4l8Oaxyq1BG8db5/uAZfqiJrhYmw2tQulg77qyKG2rUicUGMnRwAN96ao9Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T13:45:54.982271Z","bundle_sha256":"9b70e80fe5fe614c8abf96e580e436f6f09980db10f48cea2755129e3b3674fe"}}