{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PVFJVCFUAL673BBF2KS7ALA5KI","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":"e0d6303871d1736374796c9d89b99b6321311a461f4fa7089ce477b1974c1858","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-01T19:00:01Z","title_canon_sha256":"53ee2020909753324a26f7bc93aeaa3cd7343e7ce4bdc8a2118b92b7bda5f45d"},"schema_version":"1.0","source":{"id":"1802.00447","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.00447","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"arxiv_version","alias_value":"1802.00447v1","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.00447","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"pith_short_12","alias_value":"PVFJVCFUAL67","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"PVFJVCFUAL673BBF","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"PVFJVCFU","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:916fc44289b66f67bb4024145ca5152b695f9483952df4606ff511e83a857727","target":"graph","created_at":"2026-05-18T00:01:30Z","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":"Recent observational campaigns have shown that multi-planet systems seem to be abundant in our Galaxy. Moreover, it seems that these systems might have distant companions, either planets, brown-dwarfs or other stellar objects. These companions might be inclined with respect to the inner planets, and could potentially excite the eccentricities of the inner planets through the Eccentric Kozai-Lidov mechanism. These eccentricity excitations could perhaps cause the inner orbits to cross, disrupting the inner system. We study the stability of two-planet systems in the presence of a distant, incline","authors_text":"Alexander P. Stephan, Bao-Minh Hoang, Paul Denham, Smadar Naoz, Will M. Farr","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-01T19:00:01Z","title":"Hidden Planetary Friends: On the Stability Of 2-Planet Systems in the Presence of a Distant, Inclined Companion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.00447","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":"sha256:29b67c352a309ca1447d72635f8f83bbe2f3415e597e59a78c334af583d3b227","target":"record","created_at":"2026-05-18T00:01:30Z","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":"e0d6303871d1736374796c9d89b99b6321311a461f4fa7089ce477b1974c1858","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-01T19:00:01Z","title_canon_sha256":"53ee2020909753324a26f7bc93aeaa3cd7343e7ce4bdc8a2118b92b7bda5f45d"},"schema_version":"1.0","source":{"id":"1802.00447","kind":"arxiv","version":1}},"canonical_sha256":"7d4a9a88b402fdfd8425d2a5f02c1d522a81252110cb59ce6b6920c7583d2edd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d4a9a88b402fdfd8425d2a5f02c1d522a81252110cb59ce6b6920c7583d2edd","first_computed_at":"2026-05-18T00:01:30.180667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:30.180667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5KQXBxaOB44bYJFyC0YC5HeorITiz8lFCZDwZdB8NFQLthGGa6eFD8G/pKvZpNedUCwaEsvs+MKx1nK7sgg8CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:30.181274Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.00447","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29b67c352a309ca1447d72635f8f83bbe2f3415e597e59a78c334af583d3b227","sha256:916fc44289b66f67bb4024145ca5152b695f9483952df4606ff511e83a857727"],"state_sha256":"83a0010ffcefe42c63fc9475f3ca6abb4c6c1fb399116a261e147bda3a560bc3"}