{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NKYMFZWJWF2U4USPSOTWQHZBLX","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":"bcd748e01e1463bab9afa95e61c995d07c2f3b5bf8560daeb7f7fdb189ed7695","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-01-10T02:49:02Z","title_canon_sha256":"0f3b7de770ff4347a87ee620f5538fa0f70513b32ddeaad032b2c468be8350d4"},"schema_version":"1.0","source":{"id":"1801.03223","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.03223","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"1801.03223v2","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.03223","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"NKYMFZWJWF2U","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NKYMFZWJWF2U4USP","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NKYMFZWJ","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:d68a0aa97a1d58d98b79bdc80160fff21941606d83449fdb1a3e4441698edb22","target":"graph","created_at":"2026-05-18T00:18:41Z","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":"We conduct a preliminary investigation into the phenomenological implications of Einsteinian cubic gravity (ECG), a 4-dimensional theory of gravity cubic in curvature of interest for its unique formulation and properties. We find an analytic approximation for a spherically symmetric black hole solution to this theory using a continued fraction ansatz. This approximate solution is valid everywhere outside of the horizon and we use it to study the orbit of massive test bodies near a black hole, specifically computing the innermost stable circular orbit. We compute constraints on the ECG coupling","authors_text":"Mohammad Bagher Jahani Poshteh, Robert B. Mann, Robie A. Hennigar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-01-10T02:49:02Z","title":"Shadows, Signals, and Stability in Einsteinian Cubic Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.03223","kind":"arxiv","version":2},"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:edf8afd2764c18afd278c603dbe999af155584cbd70a321b94908d9ad42e08fc","target":"record","created_at":"2026-05-18T00:18:41Z","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":"bcd748e01e1463bab9afa95e61c995d07c2f3b5bf8560daeb7f7fdb189ed7695","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-01-10T02:49:02Z","title_canon_sha256":"0f3b7de770ff4347a87ee620f5538fa0f70513b32ddeaad032b2c468be8350d4"},"schema_version":"1.0","source":{"id":"1801.03223","kind":"arxiv","version":2}},"canonical_sha256":"6ab0c2e6c9b1754e524f93a7681f215df98bd60bf715474824b0e31fa9c9818b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ab0c2e6c9b1754e524f93a7681f215df98bd60bf715474824b0e31fa9c9818b","first_computed_at":"2026-05-18T00:18:41.021418Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:41.021418Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MvMU0w/6ChezVDLXgw9JnjESuI8fnpgQVQlMZjnW3DIFBjt0jxmp2f/Fr/iayQCIZXatxfxPbbhcbMw3i2RpCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:41.021907Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.03223","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edf8afd2764c18afd278c603dbe999af155584cbd70a321b94908d9ad42e08fc","sha256:d68a0aa97a1d58d98b79bdc80160fff21941606d83449fdb1a3e4441698edb22"],"state_sha256":"2b923347294c3c51d2b6589ae56317e56d277e03ebf38405df70e2a64cb0a513"}