{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:IGNYJLGAZHRTM6XCPLLSMRNGE2","short_pith_number":"pith:IGNYJLGA","canonical_record":{"source":{"id":"1111.5580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-23T18:37:54Z","cross_cats_sorted":[],"title_canon_sha256":"11fae9f4c321c01a7d3b2890b80f59fdcfa894a31b1f2d9b7b26833e8891e0f1","abstract_canon_sha256":"5fdafa9123d3165f2a7d7e7daccd805066d8ddb67efe5737d1cb5e61a3d21c16"},"schema_version":"1.0"},"canonical_sha256":"419b84acc0c9e3367ae27ad72645a626b8e7655c3c66965be1ad807401e4cfde","source":{"kind":"arxiv","id":"1111.5580","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.5580","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"arxiv_version","alias_value":"1111.5580v2","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.5580","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"pith_short_12","alias_value":"IGNYJLGAZHRT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"IGNYJLGAZHRTM6XC","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"IGNYJLGA","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:IGNYJLGAZHRTM6XCPLLSMRNGE2","target":"record","payload":{"canonical_record":{"source":{"id":"1111.5580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-23T18:37:54Z","cross_cats_sorted":[],"title_canon_sha256":"11fae9f4c321c01a7d3b2890b80f59fdcfa894a31b1f2d9b7b26833e8891e0f1","abstract_canon_sha256":"5fdafa9123d3165f2a7d7e7daccd805066d8ddb67efe5737d1cb5e61a3d21c16"},"schema_version":"1.0"},"canonical_sha256":"419b84acc0c9e3367ae27ad72645a626b8e7655c3c66965be1ad807401e4cfde","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:09:23.084148Z","signature_b64":"hDRZigR10BWoeN3nbsTbdPu2+nRaLsf65yDCrPQztOYWjqdqHBHsO5fgLMU48ncFpchE2n2kC59/fV63dY6uCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"419b84acc0c9e3367ae27ad72645a626b8e7655c3c66965be1ad807401e4cfde","last_reissued_at":"2026-05-18T03:09:23.083456Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:09:23.083456Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.5580","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:09:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HZw10rQO7dzHROMddlfU6S1e4HCzXgg+VhhrYtBq4SoyMSf6KTbW15vJ6P194BOgqgPCsZI5CAhYX24yE/RVAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T09:26:50.378292Z"},"content_sha256":"08224c72a428ed74fed76f55e7f34f864edf07e88c43181bc1ddb2d6d3e1b468","schema_version":"1.0","event_id":"sha256:08224c72a428ed74fed76f55e7f34f864edf07e88c43181bc1ddb2d6d3e1b468"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:IGNYJLGAZHRTM6XCPLLSMRNGE2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Statistics of Stellar Variability from Kepler - I: Revisiting Quarter 1 with an Astrophysically Robust Systematics Correction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Amy McQuillan, Stephen Roberts, Suzanne Aigrain","submitted_at":"2011-11-23T18:37:54Z","abstract_excerpt":"We investigate the variability properties of main sequence stars in the first month of Kepler data, using a new astrophysically robust systematics correction, and find that 60% of stars are more variable then the active Sun. We define low and high variability samples, with a cut corresponding to twice the variability level of the active Sun, and compare the properties of the stars belonging to each sample. We show tentative evidence that the more active stars have lower proper motions and may be located closer to the galactic plane. We also investigate the frequency content of the variability,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.5580","kind":"arxiv","version":2},"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":"2026-05-18T03:09:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+J2fG4xe0Jd4ekfWy19JjjRN5UmEv29RID/Xju7IaD4zJnRtX9JbZ42FFXvFrJK9vFcNy31QVivLxir1HViBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T09:26:50.379009Z"},"content_sha256":"8fdf5007e903ac036b0d2d89b89991d1bee1c7f8be486f7b3a3fe51296bd8354","schema_version":"1.0","event_id":"sha256:8fdf5007e903ac036b0d2d89b89991d1bee1c7f8be486f7b3a3fe51296bd8354"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/bundle.json","state_url":"https://pith.science/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/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":"2026-06-09T09:26:50Z","links":{"resolver":"https://pith.science/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2","bundle":"https://pith.science/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/bundle.json","state":"https://pith.science/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IGNYJLGAZHRTM6XCPLLSMRNGE2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:IGNYJLGAZHRTM6XCPLLSMRNGE2","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":"5fdafa9123d3165f2a7d7e7daccd805066d8ddb67efe5737d1cb5e61a3d21c16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-23T18:37:54Z","title_canon_sha256":"11fae9f4c321c01a7d3b2890b80f59fdcfa894a31b1f2d9b7b26833e8891e0f1"},"schema_version":"1.0","source":{"id":"1111.5580","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.5580","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"arxiv_version","alias_value":"1111.5580v2","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.5580","created_at":"2026-05-18T03:09:23Z"},{"alias_kind":"pith_short_12","alias_value":"IGNYJLGAZHRT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"IGNYJLGAZHRTM6XC","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"IGNYJLGA","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:8fdf5007e903ac036b0d2d89b89991d1bee1c7f8be486f7b3a3fe51296bd8354","target":"graph","created_at":"2026-05-18T03:09:23Z","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":"We investigate the variability properties of main sequence stars in the first month of Kepler data, using a new astrophysically robust systematics correction, and find that 60% of stars are more variable then the active Sun. We define low and high variability samples, with a cut corresponding to twice the variability level of the active Sun, and compare the properties of the stars belonging to each sample. We show tentative evidence that the more active stars have lower proper motions and may be located closer to the galactic plane. We also investigate the frequency content of the variability,","authors_text":"Amy McQuillan, Stephen Roberts, Suzanne Aigrain","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-23T18:37:54Z","title":"Statistics of Stellar Variability from Kepler - I: Revisiting Quarter 1 with an Astrophysically Robust Systematics Correction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.5580","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":"sha256:08224c72a428ed74fed76f55e7f34f864edf07e88c43181bc1ddb2d6d3e1b468","target":"record","created_at":"2026-05-18T03:09:23Z","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":"5fdafa9123d3165f2a7d7e7daccd805066d8ddb67efe5737d1cb5e61a3d21c16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-23T18:37:54Z","title_canon_sha256":"11fae9f4c321c01a7d3b2890b80f59fdcfa894a31b1f2d9b7b26833e8891e0f1"},"schema_version":"1.0","source":{"id":"1111.5580","kind":"arxiv","version":2}},"canonical_sha256":"419b84acc0c9e3367ae27ad72645a626b8e7655c3c66965be1ad807401e4cfde","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"419b84acc0c9e3367ae27ad72645a626b8e7655c3c66965be1ad807401e4cfde","first_computed_at":"2026-05-18T03:09:23.083456Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:09:23.083456Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hDRZigR10BWoeN3nbsTbdPu2+nRaLsf65yDCrPQztOYWjqdqHBHsO5fgLMU48ncFpchE2n2kC59/fV63dY6uCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:09:23.084148Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.5580","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08224c72a428ed74fed76f55e7f34f864edf07e88c43181bc1ddb2d6d3e1b468","sha256:8fdf5007e903ac036b0d2d89b89991d1bee1c7f8be486f7b3a3fe51296bd8354"],"state_sha256":"c0ae481694b0c946902c0705dbb909ceec150f5ef83875f07e7f347529ec2124"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W2oN8AEjFq+twtDQoVsqxUjzrhr4iD1CBPR8kZDijqL7HnWxXippukKbu/+9XKaqLea8WsMVaYggLmTjK5TrDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T09:26:50.381514Z","bundle_sha256":"12462305814fcf344bf555fdb72073dbf877699dfd0284c3489b3eb543573c61"}}