{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:AD5T25RLYL6EQF6XB3NTUB4NCI","short_pith_number":"pith:AD5T25RL","canonical_record":{"source":{"id":"1410.3761","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-10-14T16:43:19Z","cross_cats_sorted":[],"title_canon_sha256":"8e68b6d5c39a3331781ad315aba8d25963ff6def8e85a22d49d476fcd7ea9f4f","abstract_canon_sha256":"3f5d3f1c8a20baac3ae927f7366578a896851d1ae169c1a60b57c56b655d4a9d"},"schema_version":"1.0"},"canonical_sha256":"00fb3d762bc2fc4817d70edb3a078d1218836068de0db0651bf47a467a32952c","source":{"kind":"arxiv","id":"1410.3761","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.3761","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"arxiv_version","alias_value":"1410.3761v2","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.3761","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"pith_short_12","alias_value":"AD5T25RLYL6E","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AD5T25RLYL6EQF6X","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AD5T25RL","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:AD5T25RLYL6EQF6XB3NTUB4NCI","target":"record","payload":{"canonical_record":{"source":{"id":"1410.3761","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-10-14T16:43:19Z","cross_cats_sorted":[],"title_canon_sha256":"8e68b6d5c39a3331781ad315aba8d25963ff6def8e85a22d49d476fcd7ea9f4f","abstract_canon_sha256":"3f5d3f1c8a20baac3ae927f7366578a896851d1ae169c1a60b57c56b655d4a9d"},"schema_version":"1.0"},"canonical_sha256":"00fb3d762bc2fc4817d70edb3a078d1218836068de0db0651bf47a467a32952c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:48.499127Z","signature_b64":"TCyoco/hnTrWwoHtVBVTiDwTX46sIGuWpVp1/9CLSaOIH+jUBLpygDT0/Sqdm49m12xgfgaNZJUMVWtDizVrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00fb3d762bc2fc4817d70edb3a078d1218836068de0db0651bf47a467a32952c","last_reissued_at":"2026-05-18T01:41:48.498735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:48.498735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.3761","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":"2026-05-18T01:41:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Od7c/y/xanjY1l2abGyenVkCuFpn+JMYDhzqXhPQyToVglYOD4NzR51f1ykukn4lRDR0Jx1HVDpjLzCb7bugAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:40:07.775626Z"},"content_sha256":"0868a392f03b04a96a32f81c58d1b32f37077f54682cd077e57fae5b861be372","schema_version":"1.0","event_id":"sha256:0868a392f03b04a96a32f81c58d1b32f37077f54682cd077e57fae5b861be372"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:AD5T25RLYL6EQF6XB3NTUB4NCI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Corrugations and eccentric spirals in Saturn's D ring: New insights into what happened at Saturn in 1983","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"J.A. Burns, M.M. Hedman, M.R. Showalter","submitted_at":"2014-10-14T16:43:19Z","abstract_excerpt":"Previous investigations of Saturn's outer D ring (73,200-74,000 km from Saturn's center) identified periodic brightness variations whose radial wavenumber increased linearly over time. This pattern was attributed to a vertical corrugation, and its temporal variability implied that some event --possibly an impact with interplanetary debris-- caused the ring to become tilted out the planet's equatorial plane in 1983. This work examines these patterns in greater detail using a more extensive set of Cassini images in order to obtain additional insights into the 1983 event. These additional data re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.3761","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":""},"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":"2026-05-18T01:41:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYqypyxBXjy6cTQyoWwNdn4poRrdRhXwQ5mIGaAt6WT893X+shQ1cRdSxvWIgsXjUlvhRhUfP38EsmkHrp/NBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:40:07.775969Z"},"content_sha256":"6fc2eb30d6ebd8023969a318ce58ce00a6cc58913862e586803631bb931ce10b","schema_version":"1.0","event_id":"sha256:6fc2eb30d6ebd8023969a318ce58ce00a6cc58913862e586803631bb931ce10b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/bundle.json","state_url":"https://pith.science/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/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":"2026-06-01T19:40:07Z","links":{"resolver":"https://pith.science/pith/AD5T25RLYL6EQF6XB3NTUB4NCI","bundle":"https://pith.science/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/bundle.json","state":"https://pith.science/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AD5T25RLYL6EQF6XB3NTUB4NCI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:AD5T25RLYL6EQF6XB3NTUB4NCI","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":"3f5d3f1c8a20baac3ae927f7366578a896851d1ae169c1a60b57c56b655d4a9d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-10-14T16:43:19Z","title_canon_sha256":"8e68b6d5c39a3331781ad315aba8d25963ff6def8e85a22d49d476fcd7ea9f4f"},"schema_version":"1.0","source":{"id":"1410.3761","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.3761","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"arxiv_version","alias_value":"1410.3761v2","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.3761","created_at":"2026-05-18T01:41:48Z"},{"alias_kind":"pith_short_12","alias_value":"AD5T25RLYL6E","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AD5T25RLYL6EQF6X","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AD5T25RL","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:6fc2eb30d6ebd8023969a318ce58ce00a6cc58913862e586803631bb931ce10b","target":"graph","created_at":"2026-05-18T01:41:48Z","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":"Previous investigations of Saturn's outer D ring (73,200-74,000 km from Saturn's center) identified periodic brightness variations whose radial wavenumber increased linearly over time. This pattern was attributed to a vertical corrugation, and its temporal variability implied that some event --possibly an impact with interplanetary debris-- caused the ring to become tilted out the planet's equatorial plane in 1983. This work examines these patterns in greater detail using a more extensive set of Cassini images in order to obtain additional insights into the 1983 event. These additional data re","authors_text":"J.A. Burns, M.M. Hedman, M.R. Showalter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-10-14T16:43:19Z","title":"Corrugations and eccentric spirals in Saturn's D ring: New insights into what happened at Saturn in 1983"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.3761","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":"sha256:0868a392f03b04a96a32f81c58d1b32f37077f54682cd077e57fae5b861be372","target":"record","created_at":"2026-05-18T01:41:48Z","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":"3f5d3f1c8a20baac3ae927f7366578a896851d1ae169c1a60b57c56b655d4a9d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-10-14T16:43:19Z","title_canon_sha256":"8e68b6d5c39a3331781ad315aba8d25963ff6def8e85a22d49d476fcd7ea9f4f"},"schema_version":"1.0","source":{"id":"1410.3761","kind":"arxiv","version":2}},"canonical_sha256":"00fb3d762bc2fc4817d70edb3a078d1218836068de0db0651bf47a467a32952c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00fb3d762bc2fc4817d70edb3a078d1218836068de0db0651bf47a467a32952c","first_computed_at":"2026-05-18T01:41:48.498735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:48.498735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TCyoco/hnTrWwoHtVBVTiDwTX46sIGuWpVp1/9CLSaOIH+jUBLpygDT0/Sqdm49m12xgfgaNZJUMVWtDizVrCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:48.499127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.3761","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0868a392f03b04a96a32f81c58d1b32f37077f54682cd077e57fae5b861be372","sha256:6fc2eb30d6ebd8023969a318ce58ce00a6cc58913862e586803631bb931ce10b"],"state_sha256":"506690ebdd0fc9261614bceefd2f62238f3a94564f3445713f16e814cc33f26d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H4w/GW8PcWOtEpd6ObJBURm6/aJt6i6erGKlEwgmJju6bkDpFNCth5lY2bcgXvQ7Tb5+EKfn/T6tpcbGx7OxCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T19:40:07.777812Z","bundle_sha256":"16aa6eb02e3cec4a1b211b4e18d9280e94db0a3fcce87ffff4ef03067c86c064"}}