{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7NDOUO46R2RDJB65OMCOQ5QWMD","short_pith_number":"pith:7NDOUO46","canonical_record":{"source":{"id":"1401.6103","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-01-23T18:50:47Z","cross_cats_sorted":[],"title_canon_sha256":"72a9174b10b4b8519d54dea1a53665e4f5acab2af51957c01021a7e29d598922","abstract_canon_sha256":"7b997295d1f005e4cfdb1c2a72b3248d9df2c11f146db3fa52c9c0e01426974c"},"schema_version":"1.0"},"canonical_sha256":"fb46ea3b9e8ea23487dd7304e8761660e9929641be899d752b71428c1523f35f","source":{"kind":"arxiv","id":"1401.6103","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.6103","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.6103v2","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.6103","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"7NDOUO46R2RD","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7NDOUO46R2RDJB65","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7NDOUO46","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7NDOUO46R2RDJB65OMCOQ5QWMD","target":"record","payload":{"canonical_record":{"source":{"id":"1401.6103","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-01-23T18:50:47Z","cross_cats_sorted":[],"title_canon_sha256":"72a9174b10b4b8519d54dea1a53665e4f5acab2af51957c01021a7e29d598922","abstract_canon_sha256":"7b997295d1f005e4cfdb1c2a72b3248d9df2c11f146db3fa52c9c0e01426974c"},"schema_version":"1.0"},"canonical_sha256":"fb46ea3b9e8ea23487dd7304e8761660e9929641be899d752b71428c1523f35f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:17.419050Z","signature_b64":"FYIN91IEcdii/6S4yBplALLDeQKzPOJyWAQVpGoYKP4oH/Nzw/SA2BQIW6GG7lryWxiSIegFBWEJrVXmAPdrAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb46ea3b9e8ea23487dd7304e8761660e9929641be899d752b71428c1523f35f","last_reissued_at":"2026-05-18T01:45:17.418343Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:17.418343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.6103","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":"2026-05-18T01:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lGoqed08DFzBh8IqF2k7JwkEFAbX5XtWOkkNPYM7WB+Zq4rZOqwCSy/XNgQCcmujQcj/mrqdfldnQnepMdynCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:05:20.262409Z"},"content_sha256":"6cb396aa534f1edc75f2e252d3051a438e4f4b1090285b764f95ba61fe365c92","schema_version":"1.0","event_id":"sha256:6cb396aa534f1edc75f2e252d3051a438e4f4b1090285b764f95ba61fe365c92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7NDOUO46R2RDJB65OMCOQ5QWMD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-circular features in Saturn's D ring: D68","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"J.A. Burns, J.A. Burt, M.M. Hedman, M.R. Showalter","submitted_at":"2014-01-23T18:50:47Z","abstract_excerpt":"D68 is a narrow ringlet located only 67,627 km (1.12 planetary radii) from Saturn's spin axis. Images of this ringlet obtained by the Cassini spacecraft reveal that this ringlet exhibits persistent longitudinal brightness variations and a substantial eccentricity (ae=25+/-1 km). By comparing observations made at different times, we confirm that the brightness variations revolve around the planet at approximately the local orbital rate (1751.6 degrees/day), and that the ringlet's pericenter precesses at 38.243+/-0.008 degrees/day, consistent with the expected apsidal precession rate at this loc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.6103","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":"2026-05-18T01:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TAEi9CcdDA6pW+46tuFyHBZ6Oe/kK2snzR0mNQAKY9t9P1cd/O5iKimDKo++QdHGGRvm7RKY9RwysWnIrD98DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:05:20.263064Z"},"content_sha256":"8550168c14da35fd3892e15c81d7134078e629df1d5c1b9fab1d7a748aef9aef","schema_version":"1.0","event_id":"sha256:8550168c14da35fd3892e15c81d7134078e629df1d5c1b9fab1d7a748aef9aef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/bundle.json","state_url":"https://pith.science/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/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":"2026-06-01T02:05:20Z","links":{"resolver":"https://pith.science/pith/7NDOUO46R2RDJB65OMCOQ5QWMD","bundle":"https://pith.science/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/bundle.json","state":"https://pith.science/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7NDOUO46R2RDJB65OMCOQ5QWMD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7NDOUO46R2RDJB65OMCOQ5QWMD","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":"7b997295d1f005e4cfdb1c2a72b3248d9df2c11f146db3fa52c9c0e01426974c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-01-23T18:50:47Z","title_canon_sha256":"72a9174b10b4b8519d54dea1a53665e4f5acab2af51957c01021a7e29d598922"},"schema_version":"1.0","source":{"id":"1401.6103","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.6103","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.6103v2","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.6103","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"7NDOUO46R2RD","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7NDOUO46R2RDJB65","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7NDOUO46","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:8550168c14da35fd3892e15c81d7134078e629df1d5c1b9fab1d7a748aef9aef","target":"graph","created_at":"2026-05-18T01:45:17Z","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":"D68 is a narrow ringlet located only 67,627 km (1.12 planetary radii) from Saturn's spin axis. Images of this ringlet obtained by the Cassini spacecraft reveal that this ringlet exhibits persistent longitudinal brightness variations and a substantial eccentricity (ae=25+/-1 km). By comparing observations made at different times, we confirm that the brightness variations revolve around the planet at approximately the local orbital rate (1751.6 degrees/day), and that the ringlet's pericenter precesses at 38.243+/-0.008 degrees/day, consistent with the expected apsidal precession rate at this loc","authors_text":"J.A. Burns, J.A. Burt, 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":"2014-01-23T18:50:47Z","title":"Non-circular features in Saturn's D ring: D68"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.6103","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":"sha256:6cb396aa534f1edc75f2e252d3051a438e4f4b1090285b764f95ba61fe365c92","target":"record","created_at":"2026-05-18T01:45:17Z","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":"7b997295d1f005e4cfdb1c2a72b3248d9df2c11f146db3fa52c9c0e01426974c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-01-23T18:50:47Z","title_canon_sha256":"72a9174b10b4b8519d54dea1a53665e4f5acab2af51957c01021a7e29d598922"},"schema_version":"1.0","source":{"id":"1401.6103","kind":"arxiv","version":2}},"canonical_sha256":"fb46ea3b9e8ea23487dd7304e8761660e9929641be899d752b71428c1523f35f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb46ea3b9e8ea23487dd7304e8761660e9929641be899d752b71428c1523f35f","first_computed_at":"2026-05-18T01:45:17.418343Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:17.418343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FYIN91IEcdii/6S4yBplALLDeQKzPOJyWAQVpGoYKP4oH/Nzw/SA2BQIW6GG7lryWxiSIegFBWEJrVXmAPdrAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:17.419050Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.6103","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cb396aa534f1edc75f2e252d3051a438e4f4b1090285b764f95ba61fe365c92","sha256:8550168c14da35fd3892e15c81d7134078e629df1d5c1b9fab1d7a748aef9aef"],"state_sha256":"61cfeca614ac968f57cecaef0b3055e41760e05abbc5e5691f9a74b91958a50b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l44FQrLzbn/3Wc7d+2Yt8uHFxjE6hOK0vi6v238i/FR3k0BaCVULepPOub6dOiIl7Sdaj1zXlnfIcluPZEdYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T02:05:20.266685Z","bundle_sha256":"b7de12ee70c4404ae6f276012acb08c714d54e5b0eea59d66b6d91ad806a922f"}}