{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:H5QVZNOO6QTSUJ2CMGB36IOOHT","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":"c2aca45e31ab1d94598663ac11f31c0d2de3604b8c2290f1d932057076f8dcc3","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-10-19T18:09:40Z","title_canon_sha256":"a6fe561523d3e8a9af240ea9ff1adc7df5ca1726de98d3055f0f8f7f867f0e6b"},"schema_version":"1.0","source":{"id":"1610.06135","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.06135","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"arxiv_version","alias_value":"1610.06135v1","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.06135","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"pith_short_12","alias_value":"H5QVZNOO6QTS","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"H5QVZNOO6QTSUJ2C","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"H5QVZNOO","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:63c0eddc9ec4adcf47d5694dbb5457adb53943e6e6092c7fd24c6c4d325f6e5f","target":"graph","created_at":"2026-05-18T00:43:43Z","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":"So-called \"twisted\" black holes have recently been proposed by Zhang (1609.09721 [gr-qc]), and further considered by Chen and Jing (1610.00886 [gr-qc]), and more recently by Ong (1610.05757 [gr-qc]). While these spacetimes are certainly Ricci-flat, and so mathematically satisfy the vacuum Einstein equations, they are also merely minor variants on Taub--NUT spacetimes. Consequently they exhibit several unphysical features that make them quite unreasonable as realistic astrophysical objects. Specifically, these \"twisted\" black holes are not (globally) asymptotically flat. Furthermore, they conta","authors_text":"Finnian Gray, Jessica Santiago, Matt Visser, Sebastian Schuster","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-10-19T18:09:40Z","title":"\"Twisted\" black holes are unphysical"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.06135","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":"sha256:48ca33764f84e0bb7bfd96b5a6340db131f75846322f1f55c4e5f69f31459c09","target":"record","created_at":"2026-05-18T00:43:43Z","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":"c2aca45e31ab1d94598663ac11f31c0d2de3604b8c2290f1d932057076f8dcc3","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-10-19T18:09:40Z","title_canon_sha256":"a6fe561523d3e8a9af240ea9ff1adc7df5ca1726de98d3055f0f8f7f867f0e6b"},"schema_version":"1.0","source":{"id":"1610.06135","kind":"arxiv","version":1}},"canonical_sha256":"3f615cb5cef4272a27426183bf21ce3cd959f0e4c45a3ba35d338355cb7c4b32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f615cb5cef4272a27426183bf21ce3cd959f0e4c45a3ba35d338355cb7c4b32","first_computed_at":"2026-05-18T00:43:43.394799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:43.394799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AGPfXcDR82bAOYMCvbuuOBXpfhLmQ0ZVlYItOIV3+OQ+e2yNzKf9+/XAIIuEnYTZZcBZBFa1LRrIz5pSEr/kAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:43.395641Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.06135","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48ca33764f84e0bb7bfd96b5a6340db131f75846322f1f55c4e5f69f31459c09","sha256:63c0eddc9ec4adcf47d5694dbb5457adb53943e6e6092c7fd24c6c4d325f6e5f"],"state_sha256":"bb71d8440e709a0f1aa2a758f3aa52210f0a6c53a948d4ed81908c7a408d993d"}