{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:YSJZ3YIQS5USZK57ZA3PCQPIFD","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":"29b4b93ba7f05369dc0573d7d05fe7a4a7916d7ac97b11888adc07cace91f33f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-11T20:35:32Z","title_canon_sha256":"23062d585231f0b9bf7c462f790aaf9e8a9336c90f962e5e16d0a8c71f97dbfa"},"schema_version":"1.0","source":{"id":"1407.3290","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3290","created_at":"2026-05-18T02:47:43Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3290v1","created_at":"2026-05-18T02:47:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3290","created_at":"2026-05-18T02:47:43Z"},{"alias_kind":"pith_short_12","alias_value":"YSJZ3YIQS5US","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YSJZ3YIQS5USZK57","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YSJZ3YIQ","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:85c6143d7a7383d49f9900689b52a6c9cd296ab08e5ae56e47948294ff9bb094","target":"graph","created_at":"2026-05-18T02:47:43Z","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":"A new model for terrestrial planet formation (Hansen 2009, Walsh et al. 2011) has explored accretion in a truncated protoplanetary disk, and found that such a configuration is able to reproduce the distribution of mass among the planets in the Solar System, especially the Earth/Mars mass ratio, which earlier simulations have generally not been able to match. Walsh et al. tested a possible mechanism to truncate the disk--a two-stage, inward-then-outward migration of Jupiter and Saturn, as found in numerous hydrodynamical simulations of giant planet formation. In addition to truncating the disk ","authors_text":"Alessandro Morbidelli, Avi M. Mandell, David P. O'Brien, Kevin J. Walsh, Sean N. Raymond","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-11T20:35:32Z","title":"Water Delivery and Giant Impacts in the 'Grand Tack' Scenario"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3290","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:d0c6cd1668378fac98758ce961d7ee049421d09369f1f2befc9110f91cd588c3","target":"record","created_at":"2026-05-18T02:47:43Z","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":"29b4b93ba7f05369dc0573d7d05fe7a4a7916d7ac97b11888adc07cace91f33f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-11T20:35:32Z","title_canon_sha256":"23062d585231f0b9bf7c462f790aaf9e8a9336c90f962e5e16d0a8c71f97dbfa"},"schema_version":"1.0","source":{"id":"1407.3290","kind":"arxiv","version":1}},"canonical_sha256":"c4939de11097692cabbfc836f141e828cdccfeb48e86e196bd7d7975f613b8dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4939de11097692cabbfc836f141e828cdccfeb48e86e196bd7d7975f613b8dd","first_computed_at":"2026-05-18T02:47:43.439232Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:43.439232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kI1W8BGMHKEsvp2nXhmHtze64PUF3ExejM3oWLdG+m6I9GsWZYh037atNPLmOp5gugIQ8jfO+3UAZkcogQUjCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:43.440019Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.3290","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0c6cd1668378fac98758ce961d7ee049421d09369f1f2befc9110f91cd588c3","sha256:85c6143d7a7383d49f9900689b52a6c9cd296ab08e5ae56e47948294ff9bb094"],"state_sha256":"d3ae9616e07945373ceed99f65f80ddb4359f396db0476ebe194b2847b263232"}