{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:44QXIRXLHBUTVMITJCVWPJVCZY","short_pith_number":"pith:44QXIRXL","canonical_record":{"source":{"id":"2511.13814","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-11-17T19:00:00Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"db5413ae6661ce234e5660699caf9fec4797fd0757c72f3991eb2d5155641d34","abstract_canon_sha256":"52b88cb417060ab84908b4909a1bef09f9971d71c8835081cf1864fe0b0d43b9"},"schema_version":"1.0"},"canonical_sha256":"e7217446eb38693ab11348ab67a6a2ce17753a4c7054f7df1dcad6128732a7aa","source":{"kind":"arxiv","id":"2511.13814","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.13814","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"arxiv_version","alias_value":"2511.13814v2","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.13814","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_12","alias_value":"44QXIRXLHBUT","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_16","alias_value":"44QXIRXLHBUTVMIT","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_8","alias_value":"44QXIRXL","created_at":"2026-05-26T01:03:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:44QXIRXLHBUTVMITJCVWPJVCZY","target":"record","payload":{"canonical_record":{"source":{"id":"2511.13814","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-11-17T19:00:00Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"db5413ae6661ce234e5660699caf9fec4797fd0757c72f3991eb2d5155641d34","abstract_canon_sha256":"52b88cb417060ab84908b4909a1bef09f9971d71c8835081cf1864fe0b0d43b9"},"schema_version":"1.0"},"canonical_sha256":"e7217446eb38693ab11348ab67a6a2ce17753a4c7054f7df1dcad6128732a7aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:03:18.840055Z","signature_b64":"pyvm/lM1BqjWFEmTNJvJntLhsy/rnBTW6d4M1HJulnbPfXb9mmNc4Q4ieV/b0vdlwfkSDw2/4v23Y+dvYtOpCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7217446eb38693ab11348ab67a6a2ce17753a4c7054f7df1dcad6128732a7aa","last_reissued_at":"2026-05-26T01:03:18.839480Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:03:18.839480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2511.13814","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:03:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5JBYeWbmQizmAk+fBpvjCDp4zQiSXj8IUYHlLvEw2a4/9+6ujalXgB2JQPqhG4VnF9grWL+PCRlKPzqcE1SIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:34:43.758601Z"},"content_sha256":"60cd1f0c7c27427bcc6dfdc7750f435d1f05330e4466a4704d30469651094f1a","schema_version":"1.0","event_id":"sha256:60cd1f0c7c27427bcc6dfdc7750f435d1f05330e4466a4704d30469651094f1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:44QXIRXLHBUTVMITJCVWPJVCZY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Twisting asymptotically-flat spacetimes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Antoine Vincenti, Marc Geiller, Pujian Mao","submitted_at":"2025-11-17T19:00:00Z","abstract_excerpt":"We extend the Bondi formalism to describe asymptotically-flat spacetimes where the outgoing null geodesic congruence is not hypersurface-orthogonal, i.e. has non-vanishing twist. In the Newman-Penrose formulation, the twist $\\text{Im}(\\rho)$ is sourced by a twist potential sitting in the transverse null dyad $(m,\\bar{m})$, while in the metric formulation this potential enters $g_{ra}\\neq0$. We explain how to solve the Einstein equations for such generalized line elements, thereby providing an extension of the Bondi hierarchy to asymptotically-flat spacetimes with twist. We work out the twistin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.13814","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2511.13814/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:03:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TskbYfQwUzocKQCYjk86KwqHdoaRBWTzAyGyQfNvSzs79dD6k1zgrceS1mTdrRFuxzYlOrM190SfpyOutdunDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:34:43.758980Z"},"content_sha256":"c208a13b968eb3ecf8d27da74104769df6845d580b6ff177f0fc20916e8046ee","schema_version":"1.0","event_id":"sha256:c208a13b968eb3ecf8d27da74104769df6845d580b6ff177f0fc20916e8046ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44QXIRXLHBUTVMITJCVWPJVCZY/bundle.json","state_url":"https://pith.science/pith/44QXIRXLHBUTVMITJCVWPJVCZY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44QXIRXLHBUTVMITJCVWPJVCZY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T17:34:43Z","links":{"resolver":"https://pith.science/pith/44QXIRXLHBUTVMITJCVWPJVCZY","bundle":"https://pith.science/pith/44QXIRXLHBUTVMITJCVWPJVCZY/bundle.json","state":"https://pith.science/pith/44QXIRXLHBUTVMITJCVWPJVCZY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44QXIRXLHBUTVMITJCVWPJVCZY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:44QXIRXLHBUTVMITJCVWPJVCZY","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":"52b88cb417060ab84908b4909a1bef09f9971d71c8835081cf1864fe0b0d43b9","cross_cats_sorted":["hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-11-17T19:00:00Z","title_canon_sha256":"db5413ae6661ce234e5660699caf9fec4797fd0757c72f3991eb2d5155641d34"},"schema_version":"1.0","source":{"id":"2511.13814","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.13814","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"arxiv_version","alias_value":"2511.13814v2","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.13814","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_12","alias_value":"44QXIRXLHBUT","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_16","alias_value":"44QXIRXLHBUTVMIT","created_at":"2026-05-26T01:03:18Z"},{"alias_kind":"pith_short_8","alias_value":"44QXIRXL","created_at":"2026-05-26T01:03:18Z"}],"graph_snapshots":[{"event_id":"sha256:c208a13b968eb3ecf8d27da74104769df6845d580b6ff177f0fc20916e8046ee","target":"graph","created_at":"2026-05-26T01:03:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2511.13814/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We extend the Bondi formalism to describe asymptotically-flat spacetimes where the outgoing null geodesic congruence is not hypersurface-orthogonal, i.e. has non-vanishing twist. In the Newman-Penrose formulation, the twist $\\text{Im}(\\rho)$ is sourced by a twist potential sitting in the transverse null dyad $(m,\\bar{m})$, while in the metric formulation this potential enters $g_{ra}\\neq0$. We explain how to solve the Einstein equations for such generalized line elements, thereby providing an extension of the Bondi hierarchy to asymptotically-flat spacetimes with twist. We work out the twistin","authors_text":"Antoine Vincenti, Marc Geiller, Pujian Mao","cross_cats":["hep-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-11-17T19:00:00Z","title":"Twisting asymptotically-flat spacetimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.13814","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":"sha256:60cd1f0c7c27427bcc6dfdc7750f435d1f05330e4466a4704d30469651094f1a","target":"record","created_at":"2026-05-26T01:03:18Z","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":"52b88cb417060ab84908b4909a1bef09f9971d71c8835081cf1864fe0b0d43b9","cross_cats_sorted":["hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-11-17T19:00:00Z","title_canon_sha256":"db5413ae6661ce234e5660699caf9fec4797fd0757c72f3991eb2d5155641d34"},"schema_version":"1.0","source":{"id":"2511.13814","kind":"arxiv","version":2}},"canonical_sha256":"e7217446eb38693ab11348ab67a6a2ce17753a4c7054f7df1dcad6128732a7aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7217446eb38693ab11348ab67a6a2ce17753a4c7054f7df1dcad6128732a7aa","first_computed_at":"2026-05-26T01:03:18.839480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:03:18.839480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pyvm/lM1BqjWFEmTNJvJntLhsy/rnBTW6d4M1HJulnbPfXb9mmNc4Q4ieV/b0vdlwfkSDw2/4v23Y+dvYtOpCA==","signature_status":"signed_v1","signed_at":"2026-05-26T01:03:18.840055Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.13814","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60cd1f0c7c27427bcc6dfdc7750f435d1f05330e4466a4704d30469651094f1a","sha256:c208a13b968eb3ecf8d27da74104769df6845d580b6ff177f0fc20916e8046ee"],"state_sha256":"6c9e6d3a2f246d1a6e26e42a1654da772b1abe07724a0ba066789874f8839f56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lkkh5WBjW+wHnZCmY5tVZvk1nvn4RuZicuGFiigW+rtftKxqGNfGtzItKbRJ1G+y25N66rreQM8p/xJ4giNFBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T17:34:43.760988Z","bundle_sha256":"3cfa4eda5d752416a9c2d401f0aaba329ddd2f3e29a368d615937932f3ba1ff2"}}