{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:AZDW2ECRFGXICWMWYDWZE4AUGR","short_pith_number":"pith:AZDW2ECR","canonical_record":{"source":{"id":"2210.16830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-10-30T12:53:00Z","cross_cats_sorted":[],"title_canon_sha256":"82755bbb929daa046bbedd22ca4bbdd86780f99e7d1dc951683c5d34f74ad94a","abstract_canon_sha256":"b9011ba74669e103a0fdd4b6438bcf782e477c53af9a554c683431f5d48e1f6d"},"schema_version":"1.0"},"canonical_sha256":"06476d105129ae815996c0ed9270143472909838c369234cc72b6e2ee196033c","source":{"kind":"arxiv","id":"2210.16830","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.16830","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"arxiv_version","alias_value":"2210.16830v1","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.16830","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_12","alias_value":"AZDW2ECRFGXI","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_16","alias_value":"AZDW2ECRFGXICWMW","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_8","alias_value":"AZDW2ECR","created_at":"2026-07-05T05:30:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:AZDW2ECRFGXICWMWYDWZE4AUGR","target":"record","payload":{"canonical_record":{"source":{"id":"2210.16830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-10-30T12:53:00Z","cross_cats_sorted":[],"title_canon_sha256":"82755bbb929daa046bbedd22ca4bbdd86780f99e7d1dc951683c5d34f74ad94a","abstract_canon_sha256":"b9011ba74669e103a0fdd4b6438bcf782e477c53af9a554c683431f5d48e1f6d"},"schema_version":"1.0"},"canonical_sha256":"06476d105129ae815996c0ed9270143472909838c369234cc72b6e2ee196033c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:30:16.918501Z","signature_b64":"f+4IeSOL+44aAKiDoft3kj7eWyqATrZBS6wDusHzR3olDt5rXt6h3Zmlb97TVOJsOiVOoLKjKq6K1eM+Z9vACg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06476d105129ae815996c0ed9270143472909838c369234cc72b6e2ee196033c","last_reissued_at":"2026-07-05T05:30:16.918036Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:30:16.918036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.16830","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":"2026-07-05T05:30:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bLy1yjT9vYYpkXWIJvtmP2451s5w4sM9ZVmTzrz5Q7hC+0AMiLEh2ORIMJXmBaOl7j33rjGyCeVDgeVdgZ1lCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:28:50.458965Z"},"content_sha256":"8dc23ccda0fa0b6d560a28e90e937cdda3d471d30a31b129a4de80402e6d3b1e","schema_version":"1.0","event_id":"sha256:8dc23ccda0fa0b6d560a28e90e937cdda3d471d30a31b129a4de80402e6d3b1e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:AZDW2ECRFGXICWMWYDWZE4AUGR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stellar chromospheric activities revealed from the LAMOST-K2 time-domain survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Henggeng Han, Huiqin Yang, Jifeng Liu, Song Wang, Xiangsong Fang, Yu Bai","submitted_at":"2022-10-30T12:53:00Z","abstract_excerpt":"By using the LAMOST time-domain survey data, we study stellar activities based on the $\\rm{H_{\\alpha}}$ lines for about 2000 stars in four $K$2 plates. Two indices, $R_{\\rm{H\\alpha}}^{'}$ and $R_{\\rm{H\\alpha}}^{+}$, are computed from LAMOST spectra, the former of which is derived by excluding the photospheric contributions to the $\\rm{H_{\\alpha}}$ lines, while the latter is derived by further subtracting the non-dynamo driven chromospheric emission. Meanwhile, the periodicity and variation amplitudes are computed from \\emph{K2} light curves. Both the $R_{\\rm{H\\alpha}}^{'}$-Ro relation and $R_{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.16830","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/2210.16830/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":"2026-07-05T05:30:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VsbcwfwFoswy9s7Mum/JuEs68l9jvO23U7GAk6BMpqgBUXrTpDYO/fdTRVljv9jSwH1hj1h9b+tLa/2gHfUbBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:28:50.459592Z"},"content_sha256":"57b67c6fc1a2565236db346b396ce7ee634a2bde1325a03457bce1f842716fe0","schema_version":"1.0","event_id":"sha256:57b67c6fc1a2565236db346b396ce7ee634a2bde1325a03457bce1f842716fe0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/bundle.json","state_url":"https://pith.science/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/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":"2026-08-06T13:28:50Z","links":{"resolver":"https://pith.science/pith/AZDW2ECRFGXICWMWYDWZE4AUGR","bundle":"https://pith.science/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/bundle.json","state":"https://pith.science/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AZDW2ECRFGXICWMWYDWZE4AUGR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:AZDW2ECRFGXICWMWYDWZE4AUGR","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":"b9011ba74669e103a0fdd4b6438bcf782e477c53af9a554c683431f5d48e1f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-10-30T12:53:00Z","title_canon_sha256":"82755bbb929daa046bbedd22ca4bbdd86780f99e7d1dc951683c5d34f74ad94a"},"schema_version":"1.0","source":{"id":"2210.16830","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.16830","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"arxiv_version","alias_value":"2210.16830v1","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.16830","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_12","alias_value":"AZDW2ECRFGXI","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_16","alias_value":"AZDW2ECRFGXICWMW","created_at":"2026-07-05T05:30:16Z"},{"alias_kind":"pith_short_8","alias_value":"AZDW2ECR","created_at":"2026-07-05T05:30:16Z"}],"graph_snapshots":[{"event_id":"sha256:57b67c6fc1a2565236db346b396ce7ee634a2bde1325a03457bce1f842716fe0","target":"graph","created_at":"2026-07-05T05:30:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.16830/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"By using the LAMOST time-domain survey data, we study stellar activities based on the $\\rm{H_{\\alpha}}$ lines for about 2000 stars in four $K$2 plates. Two indices, $R_{\\rm{H\\alpha}}^{'}$ and $R_{\\rm{H\\alpha}}^{+}$, are computed from LAMOST spectra, the former of which is derived by excluding the photospheric contributions to the $\\rm{H_{\\alpha}}$ lines, while the latter is derived by further subtracting the non-dynamo driven chromospheric emission. Meanwhile, the periodicity and variation amplitudes are computed from \\emph{K2} light curves. Both the $R_{\\rm{H\\alpha}}^{'}$-Ro relation and $R_{","authors_text":"Henggeng Han, Huiqin Yang, Jifeng Liu, Song Wang, Xiangsong Fang, Yu Bai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-10-30T12:53:00Z","title":"Stellar chromospheric activities revealed from the LAMOST-K2 time-domain survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.16830","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":"sha256:8dc23ccda0fa0b6d560a28e90e937cdda3d471d30a31b129a4de80402e6d3b1e","target":"record","created_at":"2026-07-05T05:30:16Z","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":"b9011ba74669e103a0fdd4b6438bcf782e477c53af9a554c683431f5d48e1f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-10-30T12:53:00Z","title_canon_sha256":"82755bbb929daa046bbedd22ca4bbdd86780f99e7d1dc951683c5d34f74ad94a"},"schema_version":"1.0","source":{"id":"2210.16830","kind":"arxiv","version":1}},"canonical_sha256":"06476d105129ae815996c0ed9270143472909838c369234cc72b6e2ee196033c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06476d105129ae815996c0ed9270143472909838c369234cc72b6e2ee196033c","first_computed_at":"2026-07-05T05:30:16.918036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:30:16.918036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f+4IeSOL+44aAKiDoft3kj7eWyqATrZBS6wDusHzR3olDt5rXt6h3Zmlb97TVOJsOiVOoLKjKq6K1eM+Z9vACg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:30:16.918501Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.16830","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8dc23ccda0fa0b6d560a28e90e937cdda3d471d30a31b129a4de80402e6d3b1e","sha256:57b67c6fc1a2565236db346b396ce7ee634a2bde1325a03457bce1f842716fe0"],"state_sha256":"0b6f7509a4be64666c45d39d8a6730d23985d34254cc403ee5684741a4c7bbbe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9DdGkABnKuc6C2ZPrNl5yX9KLyETv/0Csh/EFAHacEv6JQ/mxLufuCcFjLAyit/Y4iWTmrYHf5xXjIlCQIEeBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T13:28:50.465265Z","bundle_sha256":"c5e341c47676838d5e4c1b614393ac8692b6074ca521d079ecca792197934f0a"}}