{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:65EUUPZEVXKX5YNWQO4H7RCWZN","short_pith_number":"pith:65EUUPZE","canonical_record":{"source":{"id":"2011.13686","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-11-27T11:54:26Z","cross_cats_sorted":[],"title_canon_sha256":"7a61966b8ca676a2372b9876fb20491a4986ea5e338bffb087e0acd24a145dd6","abstract_canon_sha256":"833f7c929042655f1bbfcafc6bcd35e49de85004e24d069308e2d6f2eb1b6737"},"schema_version":"1.0"},"canonical_sha256":"f7494a3f24add57ee1b683b87fc456cb7982b822f924954c0ab84022c6db352d","source":{"kind":"arxiv","id":"2011.13686","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.13686","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"2011.13686v1","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.13686","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"65EUUPZEVXKX","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_16","alias_value":"65EUUPZEVXKX5YNW","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_8","alias_value":"65EUUPZE","created_at":"2026-07-05T01:54:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:65EUUPZEVXKX5YNWQO4H7RCWZN","target":"record","payload":{"canonical_record":{"source":{"id":"2011.13686","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-11-27T11:54:26Z","cross_cats_sorted":[],"title_canon_sha256":"7a61966b8ca676a2372b9876fb20491a4986ea5e338bffb087e0acd24a145dd6","abstract_canon_sha256":"833f7c929042655f1bbfcafc6bcd35e49de85004e24d069308e2d6f2eb1b6737"},"schema_version":"1.0"},"canonical_sha256":"f7494a3f24add57ee1b683b87fc456cb7982b822f924954c0ab84022c6db352d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:54:57.782028Z","signature_b64":"qvIskeoM9N4GWcUya3w39Sc2b/LQHZ1IyOBbyQ7h5QIw6y8gy+kXUjCNutYyYh+Vh36ZCEG7Is9gzJS2lRq/CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7494a3f24add57ee1b683b87fc456cb7982b822f924954c0ab84022c6db352d","last_reissued_at":"2026-07-05T01:54:57.781593Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:54:57.781593Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.13686","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":"2026-07-05T01:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6QaWvwBWCBg/7184gUM0i0/HacHcAmVplhMcrB/QzS4ysdhnadaSJ0V3QLsIwZAeCY8dZdDq4hAYKXc1Pi/wCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:11:49.375802Z"},"content_sha256":"3ac856432326053892543a66c9a6b5cacd89054058d2674a24f4ec06f23c641e","schema_version":"1.0","event_id":"sha256:3ac856432326053892543a66c9a6b5cacd89054058d2674a24f4ec06f23c641e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:65EUUPZEVXKX5YNWQO4H7RCWZN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Are the Moon's nearside-farside asymmetries the result of a giant impact?","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alessandro Morbidelli, Kai Wunnemann, Meng-Hua Zhu, Ross W. K. Potter, Thorsten Kleine","submitted_at":"2020-11-27T11:54:26Z","abstract_excerpt":"The Moon exhibits striking geological asymmetries in elevation, crustal thickness, and composition between its nearside and farside. Although several scenarios have been proposed to explain these asymmetries, their origin remains debated. Recent remote sensing observations suggest that (1) the crust on the farside highlands consists of two layers: a primary anorthositic layer with thickness of ~30-50 km and on top a more mafic-rich layer ~10 km thick; and (2) the nearside exhibits a large area of low-Ca pyroxene that has been interpreted to have an impact origin. These observations support the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.13686","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2011.13686/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pe6DXdnTL5ggHV1TiizSXPS1s9PrcnZjPxApw/yOdNGxt+CiLcTz2DbOaRnkZbiom+uBmRryeRjH+5cJCyGHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:11:49.376320Z"},"content_sha256":"43cd922dbb185f5ad6f07468ee36ebc3b8532e208b5acabf7c76f85cc7b21778","schema_version":"1.0","event_id":"sha256:43cd922dbb185f5ad6f07468ee36ebc3b8532e208b5acabf7c76f85cc7b21778"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/bundle.json","state_url":"https://pith.science/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/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":"2026-08-04T15:11:49Z","links":{"resolver":"https://pith.science/pith/65EUUPZEVXKX5YNWQO4H7RCWZN","bundle":"https://pith.science/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/bundle.json","state":"https://pith.science/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65EUUPZEVXKX5YNWQO4H7RCWZN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:65EUUPZEVXKX5YNWQO4H7RCWZN","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":"833f7c929042655f1bbfcafc6bcd35e49de85004e24d069308e2d6f2eb1b6737","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-11-27T11:54:26Z","title_canon_sha256":"7a61966b8ca676a2372b9876fb20491a4986ea5e338bffb087e0acd24a145dd6"},"schema_version":"1.0","source":{"id":"2011.13686","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.13686","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"2011.13686v1","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.13686","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"65EUUPZEVXKX","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_16","alias_value":"65EUUPZEVXKX5YNW","created_at":"2026-07-05T01:54:57Z"},{"alias_kind":"pith_short_8","alias_value":"65EUUPZE","created_at":"2026-07-05T01:54:57Z"}],"graph_snapshots":[{"event_id":"sha256:43cd922dbb185f5ad6f07468ee36ebc3b8532e208b5acabf7c76f85cc7b21778","target":"graph","created_at":"2026-07-05T01:54:57Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2011.13686/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Moon exhibits striking geological asymmetries in elevation, crustal thickness, and composition between its nearside and farside. Although several scenarios have been proposed to explain these asymmetries, their origin remains debated. Recent remote sensing observations suggest that (1) the crust on the farside highlands consists of two layers: a primary anorthositic layer with thickness of ~30-50 km and on top a more mafic-rich layer ~10 km thick; and (2) the nearside exhibits a large area of low-Ca pyroxene that has been interpreted to have an impact origin. These observations support the","authors_text":"Alessandro Morbidelli, Kai Wunnemann, Meng-Hua Zhu, Ross W. K. Potter, Thorsten Kleine","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-11-27T11:54:26Z","title":"Are the Moon's nearside-farside asymmetries the result of a giant impact?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.13686","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":"sha256:3ac856432326053892543a66c9a6b5cacd89054058d2674a24f4ec06f23c641e","target":"record","created_at":"2026-07-05T01:54:57Z","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":"833f7c929042655f1bbfcafc6bcd35e49de85004e24d069308e2d6f2eb1b6737","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-11-27T11:54:26Z","title_canon_sha256":"7a61966b8ca676a2372b9876fb20491a4986ea5e338bffb087e0acd24a145dd6"},"schema_version":"1.0","source":{"id":"2011.13686","kind":"arxiv","version":1}},"canonical_sha256":"f7494a3f24add57ee1b683b87fc456cb7982b822f924954c0ab84022c6db352d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7494a3f24add57ee1b683b87fc456cb7982b822f924954c0ab84022c6db352d","first_computed_at":"2026-07-05T01:54:57.781593Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:54:57.781593Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qvIskeoM9N4GWcUya3w39Sc2b/LQHZ1IyOBbyQ7h5QIw6y8gy+kXUjCNutYyYh+Vh36ZCEG7Is9gzJS2lRq/CA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:54:57.782028Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.13686","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ac856432326053892543a66c9a6b5cacd89054058d2674a24f4ec06f23c641e","sha256:43cd922dbb185f5ad6f07468ee36ebc3b8532e208b5acabf7c76f85cc7b21778"],"state_sha256":"e5c2e4af6de10c1635e4c1049b796b801102ba28cf2fbeee556318b3215eec44"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vKagwPBj2oSU1N3rFAB9uvIyW8huvZo/u/D6vQkSM/wL4FrB/sGU3fZyCox5w04xBpx6tL9cEzrVU9Re+x7dBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T15:11:49.381649Z","bundle_sha256":"eb4d1455e66181484b6e156cd33b0dd387c61119a48e4cee62ae678fd6039cc4"}}