{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UDCTIZIEJUMGX66B322677CGQ4","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":"21c6af939aae5eefc54b076c1b437b2c77fbcd6c287adef995e64cb3708f1b2f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-06-19T20:00:19Z","title_canon_sha256":"ba0ed860923900d64baa2a1368eaa9f564df35e62d82adc9af2021598bfa49c0"},"schema_version":"1.0","source":{"id":"1506.06132","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.06132","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"arxiv_version","alias_value":"1506.06132v1","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06132","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"pith_short_12","alias_value":"UDCTIZIEJUMG","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UDCTIZIEJUMGX66B","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UDCTIZIE","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:1cdc8b447339e9e17ea2072aba043bcb18820f14712e999dfe2b46136112ed13","target":"graph","created_at":"2026-05-18T01:36:52Z","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":"Kaib & Cowan (2015) recently used terrestrial planet formation simulations to conclude that the moon-forming impactor (Theia) had only a ~5% or less chance of having the same oxygen isotope composition as Earth, while Mastrobuono-Battisti et al. (2015) used seemingly similar simulations and methods to arrive at a higher value of ~20% or more. Here we derive the results of both papers from a single set of simulations. Compared to Kaib & Cowan (2015), the analysis of Mastrobuono-Battisti et al. (2015) systematically yields more massive Theia analogs and imposes flatter isotopic gradients across ","authors_text":"Nathan A. Kaib, Nicolas B. Cowan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-06-19T20:00:19Z","title":"Brief Follow-up on Recent Studies of Theia's Accretion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06132","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":"sha256:67441ab56053fd9bce98b708bf20bb96c38e487bdfe2f8c9fa70c4c36a8feaa6","target":"record","created_at":"2026-05-18T01:36:52Z","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":"21c6af939aae5eefc54b076c1b437b2c77fbcd6c287adef995e64cb3708f1b2f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-06-19T20:00:19Z","title_canon_sha256":"ba0ed860923900d64baa2a1368eaa9f564df35e62d82adc9af2021598bfa49c0"},"schema_version":"1.0","source":{"id":"1506.06132","kind":"arxiv","version":1}},"canonical_sha256":"a0c53465044d186bfbc1deb5effc46870aed38cd87fc660784d68cbd1bd30790","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0c53465044d186bfbc1deb5effc46870aed38cd87fc660784d68cbd1bd30790","first_computed_at":"2026-05-18T01:36:52.714326Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:52.714326Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oLBqiNxJUjVL/nwSjz9ebEgV9zVxozKZKQ9G0Pj6KKw/ffSNysv913vew3lcjqfuWRU5evDLhIIabcqBkmADCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:52.714971Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.06132","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67441ab56053fd9bce98b708bf20bb96c38e487bdfe2f8c9fa70c4c36a8feaa6","sha256:1cdc8b447339e9e17ea2072aba043bcb18820f14712e999dfe2b46136112ed13"],"state_sha256":"f212c4f798c5f2a3a942a7b68bbbf9784bc61de8e828ccbfd82469fa17aeb35a"}