{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4CV5FBTM7MQ4U6BAS5Y62BLFT3","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":"3f75fa0ac224608e021a65e598fd53a0f8bac082f1e09e0b3a9b88e73bbc355b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-06-18T15:56:49Z","title_canon_sha256":"723e436e687ec788bace296c7a504f64a08e2aa884b94358a7e1ba28b713c7ec"},"schema_version":"1.0","source":{"id":"1206.3972","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.3972","created_at":"2026-05-18T03:53:18Z"},{"alias_kind":"arxiv_version","alias_value":"1206.3972v1","created_at":"2026-05-18T03:53:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.3972","created_at":"2026-05-18T03:53:18Z"},{"alias_kind":"pith_short_12","alias_value":"4CV5FBTM7MQ4","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4CV5FBTM7MQ4U6BA","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4CV5FBTM","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:b49c14c49c710aa4f03d366bb69d05887abf44d46eb31bd2df384e1ed0114ffb","target":"graph","created_at":"2026-05-18T03:53:18Z","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":"\"Propellers\" are features in Saturn's A ring associated with moonlets that open partial gaps. They exhibit non-Keplerian motion (Tiscareno 2010); the longitude residuals of the best-observed propeller, \"Bl\\'eriot,\" appear consistent with a sinusoid of period ~4 years. Pan and Chiang (2010) proposed that propeller moonlets librate in \"frog resonances\" with co-orbiting ring material. By analogy with the restricted three-body problem, they treated the co-orbital material as stationary in the rotating frame and neglected non-co-orbital material. Here we use simple numerical experiments to extend t","authors_text":"Eugene Chiang (UC Berkeley), Margaret Pan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-06-18T15:56:49Z","title":"Care and feeding of frogs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.3972","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:af8419764d2546ebeb73c367a218e1eb2fa98032b3d4821dec74a71893b12615","target":"record","created_at":"2026-05-18T03:53:18Z","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":"3f75fa0ac224608e021a65e598fd53a0f8bac082f1e09e0b3a9b88e73bbc355b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-06-18T15:56:49Z","title_canon_sha256":"723e436e687ec788bace296c7a504f64a08e2aa884b94358a7e1ba28b713c7ec"},"schema_version":"1.0","source":{"id":"1206.3972","kind":"arxiv","version":1}},"canonical_sha256":"e0abd2866cfb21ca78209771ed05659ed88cc86c9a0f3ef638b302d024b6a128","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0abd2866cfb21ca78209771ed05659ed88cc86c9a0f3ef638b302d024b6a128","first_computed_at":"2026-05-18T03:53:18.248298Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:18.248298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A2KPziyObYxEghTy/7hQS/HTb0aatLx861bof6E8xCByWGKDZ2sRcZNEejFTOyAfrd/QiLbvHD+gIB6+OwucCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:18.249118Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.3972","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af8419764d2546ebeb73c367a218e1eb2fa98032b3d4821dec74a71893b12615","sha256:b49c14c49c710aa4f03d366bb69d05887abf44d46eb31bd2df384e1ed0114ffb"],"state_sha256":"320742a14765bb14310ef00059274e753b343422a3af81c1e09e891f45999824"}