{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FJ32FASNFAY4ATO24RERTM5VJM","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":"e1fe98bfe182d3a177c54439fcca66a7ed659d42231168dd2e276d377b4d0386","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-06T18:01:09Z","title_canon_sha256":"c7bb49547d3e3010b891be05567f8fa709fe658aa4988c5895c9b1ac26edb827"},"schema_version":"1.0","source":{"id":"1903.02525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02525","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02525v1","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02525","created_at":"2026-05-17T23:51:55Z"},{"alias_kind":"pith_short_12","alias_value":"FJ32FASNFAY4","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FJ32FASNFAY4ATO2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FJ32FASN","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:28d41ebc84f891b2ea8212de89029d4582024c785c3035ff5687b75e1baeca0f","target":"graph","created_at":"2026-05-17T23:51:55Z","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 hypothesis of lunar origin by a single giant impact can explain some aspects of the Earth-Moon system. However, it is difficult to reconcile giant impact models with the compositional similarity of the Earth and Moon without violating angular momentum constraints. Furthermore, successful giant impact scenarios require very specific conditions such that they have a low probability of occurring. Here we present numerical simulations suggesting that the Moon could instead be the product of a succession of a variety of smaller collisions. In this scenario, each collision forms a debris disk ar","authors_text":"Hagai B. Perets, Oded Aharonson, Raluca Rufu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-06T18:01:09Z","title":"Multiple Impact Origin for the Moon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02525","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":"sha256:7f3adde0450cbe48f5f384a6cb05aea12a201e3854ca19c8eea34ec630b3dd81","target":"record","created_at":"2026-05-17T23:51:55Z","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":"e1fe98bfe182d3a177c54439fcca66a7ed659d42231168dd2e276d377b4d0386","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-06T18:01:09Z","title_canon_sha256":"c7bb49547d3e3010b891be05567f8fa709fe658aa4988c5895c9b1ac26edb827"},"schema_version":"1.0","source":{"id":"1903.02525","kind":"arxiv","version":1}},"canonical_sha256":"2a77a2824d2831c04ddae44919b3b54b1ad16d0f38bfa0bf3a03680d53303973","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a77a2824d2831c04ddae44919b3b54b1ad16d0f38bfa0bf3a03680d53303973","first_computed_at":"2026-05-17T23:51:55.147485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:55.147485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1LGTW67NxLi1xypC1V7huTMjOCeFnFJ+51qC/3dWA/X4l97Arhv8z+/4SHS+cNO5HV64uYJKr/i3+r36tWWZDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:55.147966Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.02525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f3adde0450cbe48f5f384a6cb05aea12a201e3854ca19c8eea34ec630b3dd81","sha256:28d41ebc84f891b2ea8212de89029d4582024c785c3035ff5687b75e1baeca0f"],"state_sha256":"bb6278ba0330ed1f861e99667175a9aee97c2cbc0b63ba03b0901b1f945571d7"}