{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:KUXTG7GW5VX64NT66RD2O6524C","short_pith_number":"pith:KUXTG7GW","canonical_record":{"source":{"id":"1203.1555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-07T17:51:52Z","cross_cats_sorted":[],"title_canon_sha256":"73c60ef8f36b3f4a17b0ce4ac629b91d520c33c7734d710efd40f9083e49d91f","abstract_canon_sha256":"4432c747a1ab5973158544f2db673c285fcdb6cfd5e90d1c481e8b37976b8ea5"},"schema_version":"1.0"},"canonical_sha256":"552f337cd6ed6fee367ef447a77bbae0bfaae478897300d62386706d2f538d37","source":{"kind":"arxiv","id":"1203.1555","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.1555","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1203.1555v2","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1555","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"KUXTG7GW5VX6","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KUXTG7GW5VX64NT6","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KUXTG7GW","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:KUXTG7GW5VX64NT66RD2O6524C","target":"record","payload":{"canonical_record":{"source":{"id":"1203.1555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-07T17:51:52Z","cross_cats_sorted":[],"title_canon_sha256":"73c60ef8f36b3f4a17b0ce4ac629b91d520c33c7734d710efd40f9083e49d91f","abstract_canon_sha256":"4432c747a1ab5973158544f2db673c285fcdb6cfd5e90d1c481e8b37976b8ea5"},"schema_version":"1.0"},"canonical_sha256":"552f337cd6ed6fee367ef447a77bbae0bfaae478897300d62386706d2f538d37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:32:35.231915Z","signature_b64":"GzyeeD67LffhG3943AjIMnCUTOs5e8Kt6Gd7BvxPVyRpxzKNQfNs/KVs6JMTvILmwK0P8RHehsrZpv5p1c5fDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"552f337cd6ed6fee367ef447a77bbae0bfaae478897300d62386706d2f538d37","last_reissued_at":"2026-05-18T01:32:35.231537Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:32:35.231537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.1555","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":"2026-05-18T01:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EgaVSuc6AKWZHoseBDqNH666naNvrh/ySBGiXY6kpRcZcuTHEq8AZWTTk6qaGwNGtF25e5dA2PyBV/oSze9KAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:26:41.103799Z"},"content_sha256":"7ae2afa7ddc6459c3807a9b41ba11c70839f87f659281e16766685abcbaf1ee9","schema_version":"1.0","event_id":"sha256:7ae2afa7ddc6459c3807a9b41ba11c70839f87f659281e16766685abcbaf1ee9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:KUXTG7GW5VX64NT66RD2O6524C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spot activity of LQ Hya from photometry between 1988 and 2011","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"G. W. Henry, J. Lehtinen, L. Jetsu, P. Kajatkari, T. Hackman","submitted_at":"2012-03-07T17:51:52Z","abstract_excerpt":"We investigate the spot activity of the young chromospherically active main sequence star LQ Hya. Our aims are to identify possible active longitudes, estimate the differential rotation and study long and short term changes in the activity. Our analysis is based on 24 years of Johnson V-band photometry. We use the previously published Continuous Period Search (CPS) method to model the evolution of the light curve of LQ Hya. The CPS fits a Fourier series model to short overlapping subsets of data. This enables us to monitor the spot configuration of the star with a higher time resolution. We fi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1555","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":"2026-05-18T01:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2JAfB311CFy9DlBqqyVmq+WfbOVgb8GNKi9h4VRGgxcFFNg4CkaOeMftfqVVzxFFTJ86Tvc+W1f2szqMTKF5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:26:41.104146Z"},"content_sha256":"e2106ffcf1f230ce6acc232bb06d40d123cb6027897814ae6daf1623020c7b85","schema_version":"1.0","event_id":"sha256:e2106ffcf1f230ce6acc232bb06d40d123cb6027897814ae6daf1623020c7b85"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KUXTG7GW5VX64NT66RD2O6524C/bundle.json","state_url":"https://pith.science/pith/KUXTG7GW5VX64NT66RD2O6524C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KUXTG7GW5VX64NT66RD2O6524C/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":"2026-06-04T12:26:41Z","links":{"resolver":"https://pith.science/pith/KUXTG7GW5VX64NT66RD2O6524C","bundle":"https://pith.science/pith/KUXTG7GW5VX64NT66RD2O6524C/bundle.json","state":"https://pith.science/pith/KUXTG7GW5VX64NT66RD2O6524C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KUXTG7GW5VX64NT66RD2O6524C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KUXTG7GW5VX64NT66RD2O6524C","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":"4432c747a1ab5973158544f2db673c285fcdb6cfd5e90d1c481e8b37976b8ea5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-07T17:51:52Z","title_canon_sha256":"73c60ef8f36b3f4a17b0ce4ac629b91d520c33c7734d710efd40f9083e49d91f"},"schema_version":"1.0","source":{"id":"1203.1555","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.1555","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1203.1555v2","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1555","created_at":"2026-05-18T01:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"KUXTG7GW5VX6","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KUXTG7GW5VX64NT6","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KUXTG7GW","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:e2106ffcf1f230ce6acc232bb06d40d123cb6027897814ae6daf1623020c7b85","target":"graph","created_at":"2026-05-18T01:32:35Z","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 spot activity of the young chromospherically active main sequence star LQ Hya. Our aims are to identify possible active longitudes, estimate the differential rotation and study long and short term changes in the activity. Our analysis is based on 24 years of Johnson V-band photometry. We use the previously published Continuous Period Search (CPS) method to model the evolution of the light curve of LQ Hya. The CPS fits a Fourier series model to short overlapping subsets of data. This enables us to monitor the spot configuration of the star with a higher time resolution. We fi","authors_text":"G. W. Henry, J. Lehtinen, L. Jetsu, P. Kajatkari, T. Hackman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-07T17:51:52Z","title":"Spot activity of LQ Hya from photometry between 1988 and 2011"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1555","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":"sha256:7ae2afa7ddc6459c3807a9b41ba11c70839f87f659281e16766685abcbaf1ee9","target":"record","created_at":"2026-05-18T01:32:35Z","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":"4432c747a1ab5973158544f2db673c285fcdb6cfd5e90d1c481e8b37976b8ea5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-07T17:51:52Z","title_canon_sha256":"73c60ef8f36b3f4a17b0ce4ac629b91d520c33c7734d710efd40f9083e49d91f"},"schema_version":"1.0","source":{"id":"1203.1555","kind":"arxiv","version":2}},"canonical_sha256":"552f337cd6ed6fee367ef447a77bbae0bfaae478897300d62386706d2f538d37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"552f337cd6ed6fee367ef447a77bbae0bfaae478897300d62386706d2f538d37","first_computed_at":"2026-05-18T01:32:35.231537Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:35.231537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GzyeeD67LffhG3943AjIMnCUTOs5e8Kt6Gd7BvxPVyRpxzKNQfNs/KVs6JMTvILmwK0P8RHehsrZpv5p1c5fDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:35.231915Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.1555","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ae2afa7ddc6459c3807a9b41ba11c70839f87f659281e16766685abcbaf1ee9","sha256:e2106ffcf1f230ce6acc232bb06d40d123cb6027897814ae6daf1623020c7b85"],"state_sha256":"17a88544d047a04fedfa9a4810c8fd7828ff7b8e2f76672472c38a744f6f10ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VUa7pEow4YuwtvCp5vXe0NunusvNsORXngYCLjGg0R9/ev6e3vQu+llnZWdakyGcwT3lU5hkif6Y0PowEZIZCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:26:41.106168Z","bundle_sha256":"ae2dd884d2291e4672c42ab8c0c2b4e41cd5a539c67ef006bddb442f069175c7"}}