{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QGBG5D72IZEBWHBNCGUEGGTMRV","short_pith_number":"pith:QGBG5D72","canonical_record":{"source":{"id":"1211.1408","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-06T22:01:55Z","cross_cats_sorted":[],"title_canon_sha256":"1821cb839fd56a44f97ef29ac1273837f21cb935b5ee92b31f49a69b9f3605eb","abstract_canon_sha256":"ac90abfdd67e5767fc710c0b2c476777630745b38714c0146500c5351f8be06b"},"schema_version":"1.0"},"canonical_sha256":"81826e8ffa46481b1c2d11a8431a6c8d4696d06a23b3d9c5bdfe994fed1f5c2e","source":{"kind":"arxiv","id":"1211.1408","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.1408","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1211.1408v1","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.1408","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"QGBG5D72IZEB","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QGBG5D72IZEBWHBN","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QGBG5D72","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QGBG5D72IZEBWHBNCGUEGGTMRV","target":"record","payload":{"canonical_record":{"source":{"id":"1211.1408","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-06T22:01:55Z","cross_cats_sorted":[],"title_canon_sha256":"1821cb839fd56a44f97ef29ac1273837f21cb935b5ee92b31f49a69b9f3605eb","abstract_canon_sha256":"ac90abfdd67e5767fc710c0b2c476777630745b38714c0146500c5351f8be06b"},"schema_version":"1.0"},"canonical_sha256":"81826e8ffa46481b1c2d11a8431a6c8d4696d06a23b3d9c5bdfe994fed1f5c2e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:21.002233Z","signature_b64":"ohkkRj9scmopemKd+4E4Y+I3At41JPhtUsAotjEhaOBhrs8U3MCghfolt18EiaWtsHO6xYsNC0abv+92q83pCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81826e8ffa46481b1c2d11a8431a6c8d4696d06a23b3d9c5bdfe994fed1f5c2e","last_reissued_at":"2026-05-18T03:41:21.001816Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:21.001816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.1408","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":"2026-05-18T03:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWybhkuy8nEpjX3Dm3br94rrWGJP8l1ICznmbheG60AqUfK4ULFsr+3GmqRZECEyFBlpVbmLonLZXTwLaNNsCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T00:03:54.024831Z"},"content_sha256":"a7b0fe40b851bd31152941fc16670a9157a6f01bf91eba05b947182adfd26a93","schema_version":"1.0","event_id":"sha256:a7b0fe40b851bd31152941fc16670a9157a6f01bf91eba05b947182adfd26a93"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QGBG5D72IZEBWHBNCGUEGGTMRV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theoretical Models of Stellar Activity Cycles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Emre I\\c{s}ik","submitted_at":"2012-11-06T22:01:55Z","abstract_excerpt":"We discuss possible mechanisms underlying the observed features of stellar activity cycles, such as multiple periodicities in very active stars, non-cyclic activity observed in moderately active stars, and spatial distribution of stellar magnetic regions. We review selected attempts to model the dependence of stellar activity cycles on stellar properties, and their comparison with observations. We suggest that combined effects of dynamo action, flux emergence and surface flux transport have substantial effects on the long-term manifestations of stellar magnetism."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.1408","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":"2026-05-18T03:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wf3/QQeHWqjn7qXHZpSKLNKSkCi0vJobYSIa4OccdoZ8Ny5Z5NEfJv2L1D26+hYLfLoRcWYKoIL1InhMUdxQAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T00:03:54.025165Z"},"content_sha256":"8b675271e084452b0b06c3080363abfcbb7fecc901677fd6ff3a6d180c148834","schema_version":"1.0","event_id":"sha256:8b675271e084452b0b06c3080363abfcbb7fecc901677fd6ff3a6d180c148834"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/bundle.json","state_url":"https://pith.science/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/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":"2026-06-30T00:03:54Z","links":{"resolver":"https://pith.science/pith/QGBG5D72IZEBWHBNCGUEGGTMRV","bundle":"https://pith.science/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/bundle.json","state":"https://pith.science/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QGBG5D72IZEBWHBNCGUEGGTMRV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QGBG5D72IZEBWHBNCGUEGGTMRV","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":"ac90abfdd67e5767fc710c0b2c476777630745b38714c0146500c5351f8be06b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-06T22:01:55Z","title_canon_sha256":"1821cb839fd56a44f97ef29ac1273837f21cb935b5ee92b31f49a69b9f3605eb"},"schema_version":"1.0","source":{"id":"1211.1408","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.1408","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1211.1408v1","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.1408","created_at":"2026-05-18T03:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"QGBG5D72IZEB","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QGBG5D72IZEBWHBN","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QGBG5D72","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:8b675271e084452b0b06c3080363abfcbb7fecc901677fd6ff3a6d180c148834","target":"graph","created_at":"2026-05-18T03:41:21Z","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 discuss possible mechanisms underlying the observed features of stellar activity cycles, such as multiple periodicities in very active stars, non-cyclic activity observed in moderately active stars, and spatial distribution of stellar magnetic regions. We review selected attempts to model the dependence of stellar activity cycles on stellar properties, and their comparison with observations. We suggest that combined effects of dynamo action, flux emergence and surface flux transport have substantial effects on the long-term manifestations of stellar magnetism.","authors_text":"Emre I\\c{s}ik","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-06T22:01:55Z","title":"Theoretical Models of Stellar Activity Cycles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.1408","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:a7b0fe40b851bd31152941fc16670a9157a6f01bf91eba05b947182adfd26a93","target":"record","created_at":"2026-05-18T03:41:21Z","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":"ac90abfdd67e5767fc710c0b2c476777630745b38714c0146500c5351f8be06b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-06T22:01:55Z","title_canon_sha256":"1821cb839fd56a44f97ef29ac1273837f21cb935b5ee92b31f49a69b9f3605eb"},"schema_version":"1.0","source":{"id":"1211.1408","kind":"arxiv","version":1}},"canonical_sha256":"81826e8ffa46481b1c2d11a8431a6c8d4696d06a23b3d9c5bdfe994fed1f5c2e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81826e8ffa46481b1c2d11a8431a6c8d4696d06a23b3d9c5bdfe994fed1f5c2e","first_computed_at":"2026-05-18T03:41:21.001816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:21.001816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ohkkRj9scmopemKd+4E4Y+I3At41JPhtUsAotjEhaOBhrs8U3MCghfolt18EiaWtsHO6xYsNC0abv+92q83pCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:21.002233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.1408","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7b0fe40b851bd31152941fc16670a9157a6f01bf91eba05b947182adfd26a93","sha256:8b675271e084452b0b06c3080363abfcbb7fecc901677fd6ff3a6d180c148834"],"state_sha256":"d6b12f9a10cc93b96a24ff649c504a2531cc491a4d7287dae7a6d671753558fc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YIypXC0M0O+LTIgCCidwnmhR3e9d3Nalyyte5DCY8q1WHd6jFHkQ25BB0dGR6dIzbSiEiwM3NdcWTVFtIpCLCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T00:03:54.026902Z","bundle_sha256":"4c13c664a1e64f3bb4269d713fe3707bad199b577d20e3cee06bcb1400fa9944"}}