{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:42OVWD5WB66N5NDV3RKQGPH24Z","short_pith_number":"pith:42OVWD5W","canonical_record":{"source":{"id":"1305.3898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-05-16T19:42:29Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"f5d1029acec39105e136d5267b6c6b5121c5566e549f2aabb3ca2b98cdcdc4b6","abstract_canon_sha256":"47b85a9968190c7eeac3335f60e7b058f1b4b1c15ddef2464758ddf6875c9a4b"},"schema_version":"1.0"},"canonical_sha256":"e69d5b0fb60fbcdeb475dc55033cfae647c648dd658576d99c74405f4beb56e5","source":{"kind":"arxiv","id":"1305.3898","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3898","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3898v1","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3898","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"pith_short_12","alias_value":"42OVWD5WB66N","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"42OVWD5WB66N5NDV","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"42OVWD5W","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:42OVWD5WB66N5NDV3RKQGPH24Z","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-05-16T19:42:29Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"f5d1029acec39105e136d5267b6c6b5121c5566e549f2aabb3ca2b98cdcdc4b6","abstract_canon_sha256":"47b85a9968190c7eeac3335f60e7b058f1b4b1c15ddef2464758ddf6875c9a4b"},"schema_version":"1.0"},"canonical_sha256":"e69d5b0fb60fbcdeb475dc55033cfae647c648dd658576d99c74405f4beb56e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:25:33.725687Z","signature_b64":"OrLfSatlG21bQjgxrsBTK8rtJkwIT+jk+NwZ/d/jeUfmJkJvaUXctDUjCuFA2vuA/wfdeLfo72HyfUJBVlrRBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e69d5b0fb60fbcdeb475dc55033cfae647c648dd658576d99c74405f4beb56e5","last_reissued_at":"2026-05-18T03:25:33.725182Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:25:33.725182Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3898","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":"2026-05-18T03:25:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"94WXtVP9W1AN6ZjhRiPJXB2CCWh/9UsPSuyCqSiputl57UqZ8EVeDJoL0VGriyOLcdrslCeXk/LAfWlbudtgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:21:21.485383Z"},"content_sha256":"722f7603ed35dc7a5bd450d4a01b9e1c7a361bbbcaaa9fdb190dd21bc9259d0a","schema_version":"1.0","event_id":"sha256:722f7603ed35dc7a5bd450d4a01b9e1c7a361bbbcaaa9fdb190dd21bc9259d0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:42OVWD5WB66N5NDV3RKQGPH24Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The dynamics of a rotating ellipsoid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.class-ph"],"primary_cat":"physics.ed-ph","authors_text":"Jos\\'e A. C. Nogales, Laysa G. Martins","submitted_at":"2013-05-16T19:42:29Z","abstract_excerpt":"An interesting physical phenomenon, which contradicts our common sense, is concerned with the dynamics of motion of a spinning ellipsoid in a non smooth surface. A hard-boiled egg spinning on a table with a rough surface is an example. In this article, we present a theoretical explanation, of the dynamics of motion of this ellipsoid, that describes the axis raising phenomenon, from the horizontal to the vertical. The equations of motion were obtained with Lagrangian formalism."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3898","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":"2026-05-18T03:25:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UktzpbYLwzcte99ChVcFVuCwpOeekJj3+b5rT00UdLUD8/hgiyCqLyuBf6YxJq/Tv78QHwcm4SK3pwQNO0soBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:21:21.485766Z"},"content_sha256":"9d9b93fae5d794f3abc3a01c238945f67cf25bbd482addc12e2b92e4fef7c8a1","schema_version":"1.0","event_id":"sha256:9d9b93fae5d794f3abc3a01c238945f67cf25bbd482addc12e2b92e4fef7c8a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/42OVWD5WB66N5NDV3RKQGPH24Z/bundle.json","state_url":"https://pith.science/pith/42OVWD5WB66N5NDV3RKQGPH24Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/42OVWD5WB66N5NDV3RKQGPH24Z/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":"2026-05-27T00:21:21Z","links":{"resolver":"https://pith.science/pith/42OVWD5WB66N5NDV3RKQGPH24Z","bundle":"https://pith.science/pith/42OVWD5WB66N5NDV3RKQGPH24Z/bundle.json","state":"https://pith.science/pith/42OVWD5WB66N5NDV3RKQGPH24Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/42OVWD5WB66N5NDV3RKQGPH24Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:42OVWD5WB66N5NDV3RKQGPH24Z","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":"47b85a9968190c7eeac3335f60e7b058f1b4b1c15ddef2464758ddf6875c9a4b","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-05-16T19:42:29Z","title_canon_sha256":"f5d1029acec39105e136d5267b6c6b5121c5566e549f2aabb3ca2b98cdcdc4b6"},"schema_version":"1.0","source":{"id":"1305.3898","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3898","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3898v1","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3898","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"pith_short_12","alias_value":"42OVWD5WB66N","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"42OVWD5WB66N5NDV","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"42OVWD5W","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:9d9b93fae5d794f3abc3a01c238945f67cf25bbd482addc12e2b92e4fef7c8a1","target":"graph","created_at":"2026-05-18T03:25:33Z","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":"An interesting physical phenomenon, which contradicts our common sense, is concerned with the dynamics of motion of a spinning ellipsoid in a non smooth surface. A hard-boiled egg spinning on a table with a rough surface is an example. In this article, we present a theoretical explanation, of the dynamics of motion of this ellipsoid, that describes the axis raising phenomenon, from the horizontal to the vertical. The equations of motion were obtained with Lagrangian formalism.","authors_text":"Jos\\'e A. C. Nogales, Laysa G. Martins","cross_cats":["physics.class-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-05-16T19:42:29Z","title":"The dynamics of a rotating ellipsoid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3898","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":"sha256:722f7603ed35dc7a5bd450d4a01b9e1c7a361bbbcaaa9fdb190dd21bc9259d0a","target":"record","created_at":"2026-05-18T03:25:33Z","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":"47b85a9968190c7eeac3335f60e7b058f1b4b1c15ddef2464758ddf6875c9a4b","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2013-05-16T19:42:29Z","title_canon_sha256":"f5d1029acec39105e136d5267b6c6b5121c5566e549f2aabb3ca2b98cdcdc4b6"},"schema_version":"1.0","source":{"id":"1305.3898","kind":"arxiv","version":1}},"canonical_sha256":"e69d5b0fb60fbcdeb475dc55033cfae647c648dd658576d99c74405f4beb56e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e69d5b0fb60fbcdeb475dc55033cfae647c648dd658576d99c74405f4beb56e5","first_computed_at":"2026-05-18T03:25:33.725182Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:25:33.725182Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OrLfSatlG21bQjgxrsBTK8rtJkwIT+jk+NwZ/d/jeUfmJkJvaUXctDUjCuFA2vuA/wfdeLfo72HyfUJBVlrRBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:25:33.725687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3898","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:722f7603ed35dc7a5bd450d4a01b9e1c7a361bbbcaaa9fdb190dd21bc9259d0a","sha256:9d9b93fae5d794f3abc3a01c238945f67cf25bbd482addc12e2b92e4fef7c8a1"],"state_sha256":"82d8421e2b1667c4118e323df420ebff2b61a4a36c2b35f28839f51d4517e59e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NWWPvx1RkX24tT2bQNcSj4u6SvNE415rg6B4JIzAJrmq1y3mqfcNjyq2JFpk4ZMN8LAgNl6HDDAi2mK+jKh+AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T00:21:21.488182Z","bundle_sha256":"d93bb08eecc0c7cfd9cc41fd2833bc0f0eb793ffbd14ddfa9678b299981dbf40"}}