{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:TU4BSE55BIBQZTGLAUYFRVZFE3","short_pith_number":"pith:TU4BSE55","canonical_record":{"source":{"id":"1209.2943","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-09-13T16:06:38Z","cross_cats_sorted":[],"title_canon_sha256":"e158f94e9dfe51a9bd72e149be8264ee4dfb9e2a448f97c793c890cb6cb0773d","abstract_canon_sha256":"471f6801cc9ce4f4e438695cabbd64d9cf115966cad7ee8ea47332f78b3566bc"},"schema_version":"1.0"},"canonical_sha256":"9d381913bd0a030ccccb053058d72526e617c184453c2a955d00f1f304d3bf0f","source":{"kind":"arxiv","id":"1209.2943","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2943","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2943v1","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2943","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"pith_short_12","alias_value":"TU4BSE55BIBQ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TU4BSE55BIBQZTGL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TU4BSE55","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:TU4BSE55BIBQZTGLAUYFRVZFE3","target":"record","payload":{"canonical_record":{"source":{"id":"1209.2943","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-09-13T16:06:38Z","cross_cats_sorted":[],"title_canon_sha256":"e158f94e9dfe51a9bd72e149be8264ee4dfb9e2a448f97c793c890cb6cb0773d","abstract_canon_sha256":"471f6801cc9ce4f4e438695cabbd64d9cf115966cad7ee8ea47332f78b3566bc"},"schema_version":"1.0"},"canonical_sha256":"9d381913bd0a030ccccb053058d72526e617c184453c2a955d00f1f304d3bf0f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:29.422067Z","signature_b64":"5vP7/o9J6Gq7uij8FC/0iA2pEo4Y48/cu2qSVzij+6XyaAMRlXncZFe4W/shBNDjALEvR2IemlK2M037LxDLAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d381913bd0a030ccccb053058d72526e617c184453c2a955d00f1f304d3bf0f","last_reissued_at":"2026-05-18T01:54:29.421639Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:29.421639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.2943","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":"2026-05-18T01:54:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pUdbh1Dj2EcKizWTj2N69xutqvMN5TdEC+jxRuT1yEpFzN7fekdAfMyf8UfRljQNS1hUBKICh9qmBKzLByDCCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:33:47.951112Z"},"content_sha256":"90f76d1702134ba80dfccb52d7246a520366cb64dcf6938cc3f48370e22582b2","schema_version":"1.0","event_id":"sha256:90f76d1702134ba80dfccb52d7246a520366cb64dcf6938cc3f48370e22582b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:TU4BSE55BIBQZTGLAUYFRVZFE3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The ballistic transport instability in Saturn's rings I: formalism and linear theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Gordon Ogilvie, Henrik Latter, Marie Chupeau","submitted_at":"2012-09-13T16:06:38Z","abstract_excerpt":"Planetary rings sustain a continual bombardment of hypervelocity meteoroids that erode the surfaces of ring particles on time scales of 10^5 - 10^7 years. The debris ejected from such impacts re-accretes on to the ring, though often at a slightly different orbital radius from the point of emission. This `ballistic transport' leads to a rearrangement of the disk's mass and angular momentum, and gives rise to a linear instability that generates structure on relatively large scales. It is likely that the 100-km undulations in Saturn's inner B-ring and the plateaus and 1000-km waves in Saturn's C-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2943","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":"2026-05-18T01:54:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FhnEe/HsJQz32e8f0NbeRq1mj/NC+hZWfDIOPs1XiFh5DL21hSwD7Dl0/vbgnZDgcVI1frTRJm37mcihx6cyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:33:47.951483Z"},"content_sha256":"a8eaea732884d7b6bbb506ca852a1673d6ef51a8ac280f0d72b69a61271c5014","schema_version":"1.0","event_id":"sha256:a8eaea732884d7b6bbb506ca852a1673d6ef51a8ac280f0d72b69a61271c5014"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/bundle.json","state_url":"https://pith.science/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/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":"2026-06-19T22:33:47Z","links":{"resolver":"https://pith.science/pith/TU4BSE55BIBQZTGLAUYFRVZFE3","bundle":"https://pith.science/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/bundle.json","state":"https://pith.science/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TU4BSE55BIBQZTGLAUYFRVZFE3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TU4BSE55BIBQZTGLAUYFRVZFE3","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":"471f6801cc9ce4f4e438695cabbd64d9cf115966cad7ee8ea47332f78b3566bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-09-13T16:06:38Z","title_canon_sha256":"e158f94e9dfe51a9bd72e149be8264ee4dfb9e2a448f97c793c890cb6cb0773d"},"schema_version":"1.0","source":{"id":"1209.2943","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2943","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2943v1","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2943","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"pith_short_12","alias_value":"TU4BSE55BIBQ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TU4BSE55BIBQZTGL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TU4BSE55","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:a8eaea732884d7b6bbb506ca852a1673d6ef51a8ac280f0d72b69a61271c5014","target":"graph","created_at":"2026-05-18T01:54:29Z","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":"Planetary rings sustain a continual bombardment of hypervelocity meteoroids that erode the surfaces of ring particles on time scales of 10^5 - 10^7 years. The debris ejected from such impacts re-accretes on to the ring, though often at a slightly different orbital radius from the point of emission. This `ballistic transport' leads to a rearrangement of the disk's mass and angular momentum, and gives rise to a linear instability that generates structure on relatively large scales. It is likely that the 100-km undulations in Saturn's inner B-ring and the plateaus and 1000-km waves in Saturn's C-","authors_text":"Gordon Ogilvie, Henrik Latter, Marie Chupeau","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-09-13T16:06:38Z","title":"The ballistic transport instability in Saturn's rings I: formalism and linear theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2943","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":"sha256:90f76d1702134ba80dfccb52d7246a520366cb64dcf6938cc3f48370e22582b2","target":"record","created_at":"2026-05-18T01:54:29Z","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":"471f6801cc9ce4f4e438695cabbd64d9cf115966cad7ee8ea47332f78b3566bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-09-13T16:06:38Z","title_canon_sha256":"e158f94e9dfe51a9bd72e149be8264ee4dfb9e2a448f97c793c890cb6cb0773d"},"schema_version":"1.0","source":{"id":"1209.2943","kind":"arxiv","version":1}},"canonical_sha256":"9d381913bd0a030ccccb053058d72526e617c184453c2a955d00f1f304d3bf0f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d381913bd0a030ccccb053058d72526e617c184453c2a955d00f1f304d3bf0f","first_computed_at":"2026-05-18T01:54:29.421639Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:29.421639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5vP7/o9J6Gq7uij8FC/0iA2pEo4Y48/cu2qSVzij+6XyaAMRlXncZFe4W/shBNDjALEvR2IemlK2M037LxDLAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:29.422067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.2943","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90f76d1702134ba80dfccb52d7246a520366cb64dcf6938cc3f48370e22582b2","sha256:a8eaea732884d7b6bbb506ca852a1673d6ef51a8ac280f0d72b69a61271c5014"],"state_sha256":"5fcece310c735d9b33eae4a978529029a043cd254e19fa16cdff4f6ecea64eca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PW7NkGCpnOepT0uVtW8NdNBAFDd7Ama6/QIcUA58JX/xXlzu8b4lz5veIZ5lZL3VKjLBVvpebonpGfB4GEsoCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T22:33:47.953420Z","bundle_sha256":"896e87e95635bfd8e52690c6e1ae350d63edc45c5ffe5340eb44a963809190f9"}}