{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:RSMM2JCN7S26PYOGAER4EARO7W","short_pith_number":"pith:RSMM2JCN","canonical_record":{"source":{"id":"1406.2020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-06-08T19:53:02Z","cross_cats_sorted":[],"title_canon_sha256":"dbbb64d0e543093d1e59f2d26ee884b25a0b5a5bc1f3fdcb85ec7e5d5a1eaf43","abstract_canon_sha256":"1ad03a8325a5d2eec1967900ccd2c01bf89e2232fa8508b69bc0d619ffa991cd"},"schema_version":"1.0"},"canonical_sha256":"8c98cd244dfcb5e7e1c60123c2022efda695d5958fcde7cf2477529e214511ae","source":{"kind":"arxiv","id":"1406.2020","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.2020","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"arxiv_version","alias_value":"1406.2020v1","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.2020","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"pith_short_12","alias_value":"RSMM2JCN7S26","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RSMM2JCN7S26PYOG","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RSMM2JCN","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:RSMM2JCN7S26PYOGAER4EARO7W","target":"record","payload":{"canonical_record":{"source":{"id":"1406.2020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-06-08T19:53:02Z","cross_cats_sorted":[],"title_canon_sha256":"dbbb64d0e543093d1e59f2d26ee884b25a0b5a5bc1f3fdcb85ec7e5d5a1eaf43","abstract_canon_sha256":"1ad03a8325a5d2eec1967900ccd2c01bf89e2232fa8508b69bc0d619ffa991cd"},"schema_version":"1.0"},"canonical_sha256":"8c98cd244dfcb5e7e1c60123c2022efda695d5958fcde7cf2477529e214511ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:01.283523Z","signature_b64":"YGACfe/ZySQsomUtsmv3HR1IeWrQaGfr26VbUvwivkO+lMybu/Ri8e+3zsG8rCov7/1CTeZ53n9LQWNEkdpSDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c98cd244dfcb5e7e1c60123c2022efda695d5958fcde7cf2477529e214511ae","last_reissued_at":"2026-05-18T01:43:01.282918Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:01.282918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.2020","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":"2026-05-18T01:43:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MzJnsmy+uV34vem7nbMQfdzk/vCpTKYDwOjV0yutfJynV/pAOmVGqcS4mehoOmR6cAEI3TQr4fUKk60YM8OcAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:33:11.351171Z"},"content_sha256":"f69209ec52fe391978964f3b21a4fa84d527436e50d865130386f11519e53e6d","schema_version":"1.0","event_id":"sha256:f69209ec52fe391978964f3b21a4fa84d527436e50d865130386f11519e53e6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:RSMM2JCN7S26PYOGAER4EARO7W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Earthshine on a Young Moon: Explaining the Lunar Farside Highlands","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Arpita Roy, Jason T. Wright, Steinn Sigurdsson","submitted_at":"2014-06-08T19:53:02Z","abstract_excerpt":"The lunar farside highlands problem refers to the curious and unexplained fact that the farside lunar crust is thicker, on average, than the nearside crust. Here we recognize the crucial influence of Earthshine, and propose that it naturally explains this hemispheric dichotomy. Since the accreting Moon rapidly achieved synchronous rotation, a surface and atmospheric thermal gradient was imposed by the proximity of the hot, post-Giant-Impact Earth. This gradient guided condensation of atmospheric and accreting material, preferentially depositing crust-forming refractories on the cooler farside,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.2020","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":"2026-05-18T01:43:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bxaHyxv/1buyeA1sT3h/ruLi9ZznnwdTX0+v6S6DGOyDR2adFlAaxLMyZQzNM8CAmjiU91gB303T8j7+ACSbCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:33:11.351519Z"},"content_sha256":"5ee7797db8bb677c7e30390adbaedd7b39c6e2166e141b7b61773da2de867e7e","schema_version":"1.0","event_id":"sha256:5ee7797db8bb677c7e30390adbaedd7b39c6e2166e141b7b61773da2de867e7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RSMM2JCN7S26PYOGAER4EARO7W/bundle.json","state_url":"https://pith.science/pith/RSMM2JCN7S26PYOGAER4EARO7W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RSMM2JCN7S26PYOGAER4EARO7W/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":"2026-07-04T12:33:11Z","links":{"resolver":"https://pith.science/pith/RSMM2JCN7S26PYOGAER4EARO7W","bundle":"https://pith.science/pith/RSMM2JCN7S26PYOGAER4EARO7W/bundle.json","state":"https://pith.science/pith/RSMM2JCN7S26PYOGAER4EARO7W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RSMM2JCN7S26PYOGAER4EARO7W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:RSMM2JCN7S26PYOGAER4EARO7W","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":"1ad03a8325a5d2eec1967900ccd2c01bf89e2232fa8508b69bc0d619ffa991cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-06-08T19:53:02Z","title_canon_sha256":"dbbb64d0e543093d1e59f2d26ee884b25a0b5a5bc1f3fdcb85ec7e5d5a1eaf43"},"schema_version":"1.0","source":{"id":"1406.2020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.2020","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"arxiv_version","alias_value":"1406.2020v1","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.2020","created_at":"2026-05-18T01:43:01Z"},{"alias_kind":"pith_short_12","alias_value":"RSMM2JCN7S26","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RSMM2JCN7S26PYOG","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RSMM2JCN","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:5ee7797db8bb677c7e30390adbaedd7b39c6e2166e141b7b61773da2de867e7e","target":"graph","created_at":"2026-05-18T01:43:01Z","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":"The lunar farside highlands problem refers to the curious and unexplained fact that the farside lunar crust is thicker, on average, than the nearside crust. Here we recognize the crucial influence of Earthshine, and propose that it naturally explains this hemispheric dichotomy. Since the accreting Moon rapidly achieved synchronous rotation, a surface and atmospheric thermal gradient was imposed by the proximity of the hot, post-Giant-Impact Earth. This gradient guided condensation of atmospheric and accreting material, preferentially depositing crust-forming refractories on the cooler farside,","authors_text":"Arpita Roy, Jason T. Wright, Steinn Sigurdsson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-06-08T19:53:02Z","title":"Earthshine on a Young Moon: Explaining the Lunar Farside Highlands"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.2020","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:f69209ec52fe391978964f3b21a4fa84d527436e50d865130386f11519e53e6d","target":"record","created_at":"2026-05-18T01:43:01Z","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":"1ad03a8325a5d2eec1967900ccd2c01bf89e2232fa8508b69bc0d619ffa991cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-06-08T19:53:02Z","title_canon_sha256":"dbbb64d0e543093d1e59f2d26ee884b25a0b5a5bc1f3fdcb85ec7e5d5a1eaf43"},"schema_version":"1.0","source":{"id":"1406.2020","kind":"arxiv","version":1}},"canonical_sha256":"8c98cd244dfcb5e7e1c60123c2022efda695d5958fcde7cf2477529e214511ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c98cd244dfcb5e7e1c60123c2022efda695d5958fcde7cf2477529e214511ae","first_computed_at":"2026-05-18T01:43:01.282918Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:01.282918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YGACfe/ZySQsomUtsmv3HR1IeWrQaGfr26VbUvwivkO+lMybu/Ri8e+3zsG8rCov7/1CTeZ53n9LQWNEkdpSDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:01.283523Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.2020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f69209ec52fe391978964f3b21a4fa84d527436e50d865130386f11519e53e6d","sha256:5ee7797db8bb677c7e30390adbaedd7b39c6e2166e141b7b61773da2de867e7e"],"state_sha256":"dea0c8fb9d69cf1dca651537565ca63234c8651eb58c7d59c6fd5bfd699453c2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"INpLpP6mKwRVy/rHvsDHQ20BKE4XFFnkSYmAPQLFs4TA75kidahxyK91Ofy+/01Cat7nHey31SN6BlT68hLfAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T12:33:11.353370Z","bundle_sha256":"3d412a3c63d22b2f52190dd595b1533ec7fdc38fc1e19603e17d8d15232531c4"}}