{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2CYKTVMIL25E5YI5JA5BAAZNEP","short_pith_number":"pith:2CYKTVMI","canonical_record":{"source":{"id":"2008.03351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-07T19:49:23Z","cross_cats_sorted":[],"title_canon_sha256":"c762444f5f72439c151af2919b68f5f5030939702dcf875c8d352eb780b47bd5","abstract_canon_sha256":"60666261ddd2b5ebe4e8bec745a2db439514e9a0f154d2be2814fb3ddc370f87"},"schema_version":"1.0"},"canonical_sha256":"d0b0a9d5885eba4ee11d483a10032d23ee561aca3e44f11737ddee76063db33b","source":{"kind":"arxiv","id":"2008.03351","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.03351","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2008.03351v1","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.03351","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"2CYKTVMIL25E","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"2CYKTVMIL25E5YI5","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"2CYKTVMI","created_at":"2026-07-05T04:07:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2CYKTVMIL25E5YI5JA5BAAZNEP","target":"record","payload":{"canonical_record":{"source":{"id":"2008.03351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-07T19:49:23Z","cross_cats_sorted":[],"title_canon_sha256":"c762444f5f72439c151af2919b68f5f5030939702dcf875c8d352eb780b47bd5","abstract_canon_sha256":"60666261ddd2b5ebe4e8bec745a2db439514e9a0f154d2be2814fb3ddc370f87"},"schema_version":"1.0"},"canonical_sha256":"d0b0a9d5885eba4ee11d483a10032d23ee561aca3e44f11737ddee76063db33b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:07:20.477486Z","signature_b64":"QrlQlneaj+q/7fn7MsTGIVCgoEOcZjJTLuwkkIdkxqRXIiyFJBjdcln/TOrbN1+/2a1WCChFqPs8r0BHSBx6BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0b0a9d5885eba4ee11d483a10032d23ee561aca3e44f11737ddee76063db33b","last_reissued_at":"2026-07-05T04:07:20.476989Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:07:20.476989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.03351","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":"2026-07-05T04:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KyN8qbSCG6JGNwmBNNKN/E+eA1VKp19GyufsYh9CP50I3aeBhsJGelbprcfgyvEOuPbcmyTE7OmCne+LLkaTDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:51:39.223162Z"},"content_sha256":"d1b4a0034b10e1378af90dec72aa94df40e9cf3421285645478f759d87fdb7ae","schema_version":"1.0","event_id":"sha256:d1b4a0034b10e1378af90dec72aa94df40e9cf3421285645478f759d87fdb7ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2CYKTVMIL25E5YI5JA5BAAZNEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Astraea: Predicting Long Rotation Periods with 27-Day Light Curves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jason L.~Curtis, Kirsten Blancato, Marcel A.~Ag\\\"ueros, Melissa Ness, Ruth Angus, Sam Grunblatt, Yuxi (Lucy) Lu","submitted_at":"2020-08-07T19:49:23Z","abstract_excerpt":"The rotation periods of planet-hosting stars can be used for modeling and mitigating the impact of magnetic activity in radial velocity measurements and can help constrain the high-energy flux environment and space weather of planetary systems. Millions of stars and thousands of planet hosts are observed with the Transiting Exoplanet Survey Satellite (TESS). However, most will only be observed for 27 contiguous days in a year, making it difficult to measure rotation periods with traditional methods. This is especially problematic for field M dwarfs, which are ideal candidates for exoplanet sea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.03351","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/2008.03351/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":"2026-07-05T04:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wo5jL8PM7LmwrPUcQMY7xsx+tjIhPxOOiFOFEVJaHRFB1a/OhkOPcA16JXGZYIMHA9KzkjRMr1HchE4pwDQiCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:51:39.223540Z"},"content_sha256":"10feacd3791fef9e5194cc9f4150dceda2a222ae057cc630c7e32497971651af","schema_version":"1.0","event_id":"sha256:10feacd3791fef9e5194cc9f4150dceda2a222ae057cc630c7e32497971651af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/bundle.json","state_url":"https://pith.science/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/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":"2026-07-07T14:51:39Z","links":{"resolver":"https://pith.science/pith/2CYKTVMIL25E5YI5JA5BAAZNEP","bundle":"https://pith.science/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/bundle.json","state":"https://pith.science/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2CYKTVMIL25E5YI5JA5BAAZNEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2CYKTVMIL25E5YI5JA5BAAZNEP","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":"60666261ddd2b5ebe4e8bec745a2db439514e9a0f154d2be2814fb3ddc370f87","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-07T19:49:23Z","title_canon_sha256":"c762444f5f72439c151af2919b68f5f5030939702dcf875c8d352eb780b47bd5"},"schema_version":"1.0","source":{"id":"2008.03351","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.03351","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2008.03351v1","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.03351","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"2CYKTVMIL25E","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"2CYKTVMIL25E5YI5","created_at":"2026-07-05T04:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"2CYKTVMI","created_at":"2026-07-05T04:07:20Z"}],"graph_snapshots":[{"event_id":"sha256:10feacd3791fef9e5194cc9f4150dceda2a222ae057cc630c7e32497971651af","target":"graph","created_at":"2026-07-05T04:07:20Z","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/2008.03351/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The rotation periods of planet-hosting stars can be used for modeling and mitigating the impact of magnetic activity in radial velocity measurements and can help constrain the high-energy flux environment and space weather of planetary systems. Millions of stars and thousands of planet hosts are observed with the Transiting Exoplanet Survey Satellite (TESS). However, most will only be observed for 27 contiguous days in a year, making it difficult to measure rotation periods with traditional methods. This is especially problematic for field M dwarfs, which are ideal candidates for exoplanet sea","authors_text":"Jason L.~Curtis, Kirsten Blancato, Marcel A.~Ag\\\"ueros, Melissa Ness, Ruth Angus, Sam Grunblatt, Yuxi (Lucy) Lu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-07T19:49:23Z","title":"Astraea: Predicting Long Rotation Periods with 27-Day Light Curves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.03351","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:d1b4a0034b10e1378af90dec72aa94df40e9cf3421285645478f759d87fdb7ae","target":"record","created_at":"2026-07-05T04:07:20Z","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":"60666261ddd2b5ebe4e8bec745a2db439514e9a0f154d2be2814fb3ddc370f87","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-07T19:49:23Z","title_canon_sha256":"c762444f5f72439c151af2919b68f5f5030939702dcf875c8d352eb780b47bd5"},"schema_version":"1.0","source":{"id":"2008.03351","kind":"arxiv","version":1}},"canonical_sha256":"d0b0a9d5885eba4ee11d483a10032d23ee561aca3e44f11737ddee76063db33b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0b0a9d5885eba4ee11d483a10032d23ee561aca3e44f11737ddee76063db33b","first_computed_at":"2026-07-05T04:07:20.476989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:07:20.476989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QrlQlneaj+q/7fn7MsTGIVCgoEOcZjJTLuwkkIdkxqRXIiyFJBjdcln/TOrbN1+/2a1WCChFqPs8r0BHSBx6BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:07:20.477486Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.03351","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d1b4a0034b10e1378af90dec72aa94df40e9cf3421285645478f759d87fdb7ae","sha256:10feacd3791fef9e5194cc9f4150dceda2a222ae057cc630c7e32497971651af"],"state_sha256":"34301b2552dab84a243af35cb93ab2d81cef04cedd90d94dee53d04cfd9aea47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ve9wgJMddkh+t32e/9Mw7KQcvR1MBFN/XJTwxNF9d7XhY8AdU8kJAttdv7gCjgTnqyZlG/cPepudP1FghkjbBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:51:39.225536Z","bundle_sha256":"152fc4127bf190a51fe84a34c18985ecf7d3d3478445b5a7d9f6c893f59e1e62"}}