{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PVYB5MI323MOJNEUSPNQ5EBU3J","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":"57723d82bea762842fe9ac353bfb7703823b90f9219382831e4186d02b371476","cross_cats_sorted":["physics.geo-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-02T03:43:53Z","title_canon_sha256":"f8a8c49e3a351f9b18f7b138fc927f6cf7caefc77c6d08c2868b0fe17368460c"},"schema_version":"1.0","source":{"id":"2102.01281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.01281","created_at":"2026-07-05T02:11:28Z"},{"alias_kind":"arxiv_version","alias_value":"2102.01281v1","created_at":"2026-07-05T02:11:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.01281","created_at":"2026-07-05T02:11:28Z"},{"alias_kind":"pith_short_12","alias_value":"PVYB5MI323MO","created_at":"2026-07-05T02:11:28Z"},{"alias_kind":"pith_short_16","alias_value":"PVYB5MI323MOJNEU","created_at":"2026-07-05T02:11:28Z"},{"alias_kind":"pith_short_8","alias_value":"PVYB5MI3","created_at":"2026-07-05T02:11:28Z"}],"graph_snapshots":[{"event_id":"sha256:0160f1a4571d9f156922fba740897cfbfa2dfff7e8b46a07de72e3687b152dfc","target":"graph","created_at":"2026-07-05T02:11:28Z","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/2102.01281/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Northwest Africa (NWA) 11042 is a heavily shocked achondrite with medium-grained cumulate textures. Its olivine and pyroxene compositions, oxygen isotopic composition, and chromium isotopic composition are consistent with L chondrites. Sm-Nd dating of its primary phases shows a crystallization age of 4100 +/- 160 Ma. Ar-Ar dating of its shocked mineral maskelynite reveals an age of 484.0 +/- 1.5 Ma. This age coincides roughly with the breakup event of the L chondrite parent body evident in the shock ages of many L chondrites and the terrestrial record of fossil L chondritic chromite. NWA 11042","authors_text":"Carl B. Agee, Daniela Krietsch, Henner Busemann, Karen Ziegler, Matthew E. Sanborn, Matthew Heizler, Munir Humayun, Qing-zhu Yin, Victor Polyak, Yemane Asmerom, Zoltan Vaci","cross_cats":["physics.geo-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-02T03:43:53Z","title":"Unique achondrite Northwest Africa 11042: Exploring the melting and breakup of the L Chondrite parent body"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.01281","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":"sha256:47dc2f5bb161b9c40c2add9774c47a3974239e80de3a74de91cdb336c98a6303","target":"record","created_at":"2026-07-05T02:11:28Z","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":"57723d82bea762842fe9ac353bfb7703823b90f9219382831e4186d02b371476","cross_cats_sorted":["physics.geo-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-02T03:43:53Z","title_canon_sha256":"f8a8c49e3a351f9b18f7b138fc927f6cf7caefc77c6d08c2868b0fe17368460c"},"schema_version":"1.0","source":{"id":"2102.01281","kind":"arxiv","version":1}},"canonical_sha256":"7d701eb11bd6d8e4b49493db0e9034da6b2fa9311673abf16a7f11b68c0c5c7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d701eb11bd6d8e4b49493db0e9034da6b2fa9311673abf16a7f11b68c0c5c7f","first_computed_at":"2026-07-05T02:11:28.781942Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:11:28.781942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dcOS1kCz5yIgo45iLDu1QQbsotT5EJ/biGFpblLlzt5Tt0dhziQ5v5ANLGoF2TY1P5ShXNCE67zUdlVYkzjDDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:11:28.782407Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.01281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:47dc2f5bb161b9c40c2add9774c47a3974239e80de3a74de91cdb336c98a6303","sha256:0160f1a4571d9f156922fba740897cfbfa2dfff7e8b46a07de72e3687b152dfc"],"state_sha256":"430bda4a49c73cff0bab9cc41b8412033e75891d105a676e007e2f9d1cfccbca"}