{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:HIYYQJNRDLZCS74VZU7LA6TR3P","short_pith_number":"pith:HIYYQJNR","canonical_record":{"source":{"id":"astro-ph/0108207","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-12T21:17:36Z","cross_cats_sorted":[],"title_canon_sha256":"5595e8d37bc21110752eb00fab02009fdd639b74cc705a46f02a59cfba12b4f8","abstract_canon_sha256":"428c85188b523559c34d1dc7502448665a4aeb51ff1e6215893ad965cd68b45e"},"schema_version":"1.0"},"canonical_sha256":"3a318825b11af2297f95cd3eb07a71dbd125af968a66a0e9870825bbf9ce5199","source":{"kind":"arxiv","id":"astro-ph/0108207","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0108207","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0108207v2","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0108207","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_12","alias_value":"HIYYQJNRDLZC","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_16","alias_value":"HIYYQJNRDLZCS74V","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_8","alias_value":"HIYYQJNR","created_at":"2026-07-04T16:23:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:HIYYQJNRDLZCS74VZU7LA6TR3P","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0108207","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-12T21:17:36Z","cross_cats_sorted":[],"title_canon_sha256":"5595e8d37bc21110752eb00fab02009fdd639b74cc705a46f02a59cfba12b4f8","abstract_canon_sha256":"428c85188b523559c34d1dc7502448665a4aeb51ff1e6215893ad965cd68b45e"},"schema_version":"1.0"},"canonical_sha256":"3a318825b11af2297f95cd3eb07a71dbd125af968a66a0e9870825bbf9ce5199","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:57.584764Z","signature_b64":"8PkZiEo9kgpNLqMmbvZRFxCl8Ba7549B9hAciKfYjVWWamUSidfVXGcgXukNII1XdVDiH2M7YzYmjwHwy4rRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a318825b11af2297f95cd3eb07a71dbd125af968a66a0e9870825bbf9ce5199","last_reissued_at":"2026-07-04T16:23:57.582823Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:57.582823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0108207","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":"2026-07-04T16:23:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Glruh8JpFgtqsnzCraYYU0VWi6lYqu+nvCg20whL5yx80JyRyCYY1ISGWOpzMxiQ4exduROGl9hsfVdcXX4UAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:00:55.194176Z"},"content_sha256":"d786e50c09bb51dd03861dd68664838caee43368c209c37433590a1ea90a0a0d","schema_version":"1.0","event_id":"sha256:d786e50c09bb51dd03861dd68664838caee43368c209c37433590a1ea90a0a0d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:HIYYQJNRDLZCS74VZU7LA6TR3P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamo action by differential rotation in a stably stratified stellar interior","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"H.C. Spruit","submitted_at":"2001-08-12T21:17:36Z","abstract_excerpt":"Magnetic fields can be created in stably stratified (non-convective) layers in a differentially rotating star. A magnetic instability in the toroidal field (wound up by differential rotation) replaces the role of convection in closing the field amplification loop. Tayler instability is likely to be the most relevant magnetic instability. A dynamo model is developed from these ingredients, and applied to the problem of angular momentum transport in stellar interiors. It produces a prodominantly horizontal field. This dynamo process might account for the observed pattern of rotation in the solar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0108207","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0108207/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":"2026-07-04T16:23:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DTbbSQYG217CbtTxLw4X0L2TANfNRDRmf8XU9bNTa2srJcG0nvUjrZkRyrS1jaK4ps/SrqU/OU5U8XWgzhaDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:00:55.194963Z"},"content_sha256":"dd8cf24814c7ce22daec1dfb777fb9a548d8cbfc541f505c10f4809b380a9453","schema_version":"1.0","event_id":"sha256:dd8cf24814c7ce22daec1dfb777fb9a548d8cbfc541f505c10f4809b380a9453"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/bundle.json","state_url":"https://pith.science/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/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":"2026-08-03T16:00:55Z","links":{"resolver":"https://pith.science/pith/HIYYQJNRDLZCS74VZU7LA6TR3P","bundle":"https://pith.science/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/bundle.json","state":"https://pith.science/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HIYYQJNRDLZCS74VZU7LA6TR3P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:HIYYQJNRDLZCS74VZU7LA6TR3P","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":"428c85188b523559c34d1dc7502448665a4aeb51ff1e6215893ad965cd68b45e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-12T21:17:36Z","title_canon_sha256":"5595e8d37bc21110752eb00fab02009fdd639b74cc705a46f02a59cfba12b4f8"},"schema_version":"1.0","source":{"id":"astro-ph/0108207","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0108207","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0108207v2","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0108207","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_12","alias_value":"HIYYQJNRDLZC","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_16","alias_value":"HIYYQJNRDLZCS74V","created_at":"2026-07-04T16:23:57Z"},{"alias_kind":"pith_short_8","alias_value":"HIYYQJNR","created_at":"2026-07-04T16:23:57Z"}],"graph_snapshots":[{"event_id":"sha256:dd8cf24814c7ce22daec1dfb777fb9a548d8cbfc541f505c10f4809b380a9453","target":"graph","created_at":"2026-07-04T16:23:57Z","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/astro-ph/0108207/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic fields can be created in stably stratified (non-convective) layers in a differentially rotating star. A magnetic instability in the toroidal field (wound up by differential rotation) replaces the role of convection in closing the field amplification loop. Tayler instability is likely to be the most relevant magnetic instability. A dynamo model is developed from these ingredients, and applied to the problem of angular momentum transport in stellar interiors. It produces a prodominantly horizontal field. This dynamo process might account for the observed pattern of rotation in the solar","authors_text":"H.C. Spruit","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-08-12T21:17:36Z","title":"Dynamo action by differential rotation in a stably stratified stellar interior"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0108207","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:d786e50c09bb51dd03861dd68664838caee43368c209c37433590a1ea90a0a0d","target":"record","created_at":"2026-07-04T16:23:57Z","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":"428c85188b523559c34d1dc7502448665a4aeb51ff1e6215893ad965cd68b45e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-12T21:17:36Z","title_canon_sha256":"5595e8d37bc21110752eb00fab02009fdd639b74cc705a46f02a59cfba12b4f8"},"schema_version":"1.0","source":{"id":"astro-ph/0108207","kind":"arxiv","version":2}},"canonical_sha256":"3a318825b11af2297f95cd3eb07a71dbd125af968a66a0e9870825bbf9ce5199","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a318825b11af2297f95cd3eb07a71dbd125af968a66a0e9870825bbf9ce5199","first_computed_at":"2026-07-04T16:23:57.582823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:57.582823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8PkZiEo9kgpNLqMmbvZRFxCl8Ba7549B9hAciKfYjVWWamUSidfVXGcgXukNII1XdVDiH2M7YzYmjwHwy4rRCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:57.584764Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0108207","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d786e50c09bb51dd03861dd68664838caee43368c209c37433590a1ea90a0a0d","sha256:dd8cf24814c7ce22daec1dfb777fb9a548d8cbfc541f505c10f4809b380a9453"],"state_sha256":"51f47d87fd76e27c915724c8aab6f944304e9456d1e0fbcff9c340f57954b4be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EWOD1l9bt+QzLOZTgWOEGE+w0ESYvd8+Iq61XpfqBqma3uVmdy6fgNJ2W6c69dfn6HHkMRYkP90AMmXkNh+SBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:00:55.199249Z","bundle_sha256":"787bfd3e812dcf2bf6cdea90db676dd2f965959f2872287c8b49c2eb748361de"}}