{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:HV2IMFDC5Z742KYX5PZON44QBS","short_pith_number":"pith:HV2IMFDC","canonical_record":{"source":{"id":"2307.11063","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-07-20T17:43:30Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"2c9803321f1bb5272466f1bd2245e37e2004344dc1c8c9c35fe66284b7c01461","abstract_canon_sha256":"e0d32be7bfa7973c5f7439df20174e9b01dee5a2f2fbc63f96f76c550b941989"},"schema_version":"1.0"},"canonical_sha256":"3d74861462ee7fcd2b17ebf2e6f3900cadd2c69a9da46946082e2681310cef80","source":{"kind":"arxiv","id":"2307.11063","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.11063","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"arxiv_version","alias_value":"2307.11063v2","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.11063","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_12","alias_value":"HV2IMFDC5Z74","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_16","alias_value":"HV2IMFDC5Z742KYX","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_8","alias_value":"HV2IMFDC","created_at":"2026-07-05T07:15:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:HV2IMFDC5Z742KYX5PZON44QBS","target":"record","payload":{"canonical_record":{"source":{"id":"2307.11063","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-07-20T17:43:30Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"2c9803321f1bb5272466f1bd2245e37e2004344dc1c8c9c35fe66284b7c01461","abstract_canon_sha256":"e0d32be7bfa7973c5f7439df20174e9b01dee5a2f2fbc63f96f76c550b941989"},"schema_version":"1.0"},"canonical_sha256":"3d74861462ee7fcd2b17ebf2e6f3900cadd2c69a9da46946082e2681310cef80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:15:57.662253Z","signature_b64":"FM8o9Y6bt1Hd4zU24xXHp2ULqhJ3HCNvJDpCRjiWcqkxPlhN4RtayHyNXnqW4/rcxi3+fmQquV6Oe3f04ISBDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d74861462ee7fcd2b17ebf2e6f3900cadd2c69a9da46946082e2681310cef80","last_reissued_at":"2026-07-05T07:15:57.661639Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:15:57.661639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2307.11063","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":"2026-07-05T07:15:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ezfmN/du0EMmyu2xuqFeLrTdUDS+k49QMYe7zTIlKVPrK2h/amlBiNF5i4MTPpVtJhkjqa6FRuXvY7NBenjzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:16:02.937589Z"},"content_sha256":"3dbac1bd160f87c8ed61db06b96f9cc251c83acc7f1d013bd51343d1e74ab860","schema_version":"1.0","event_id":"sha256:3dbac1bd160f87c8ed61db06b96f9cc251c83acc7f1d013bd51343d1e74ab860"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:HV2IMFDC5Z742KYX5PZON44QBS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self-Dual Fields on Self-Dual Backgrounds and the Double Copy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Bill Spence, Graham R. Brown, Joshua Gowdy","submitted_at":"2023-07-20T17:43:30Z","abstract_excerpt":"We explore the double copy for self-dual gauge and gravitational fields on self-dual background spacetimes. We consider backgrounds associated to solutions of the second Plebanski equation and describe results with different gauge-fixing conditions. Finally we discuss the kinematic and $w$-algebras and the double copy, identifying modified Poisson structures and kinematic structure constants in the presence of the self-dual background. The self-dual plane wave and Eguchi-Hanson spacetimes are studied as examples and their respective $w$-algebras derived."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.11063","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/2307.11063/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":"2026-07-05T07:15:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LXCzU1e8jeO8sA4UQEhQP7/TH733Eaa1tCVnhpmp3fdUyZ68I+lKqrG6MmjDV5a1UOCjrStXnC464Oy5Hwq0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:16:02.938111Z"},"content_sha256":"9291c1a8913539d9dd73eb297c31d74565681c9a661dbdd779b9301a447b0173","schema_version":"1.0","event_id":"sha256:9291c1a8913539d9dd73eb297c31d74565681c9a661dbdd779b9301a447b0173"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HV2IMFDC5Z742KYX5PZON44QBS/bundle.json","state_url":"https://pith.science/pith/HV2IMFDC5Z742KYX5PZON44QBS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HV2IMFDC5Z742KYX5PZON44QBS/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":"2026-08-11T03:16:02Z","links":{"resolver":"https://pith.science/pith/HV2IMFDC5Z742KYX5PZON44QBS","bundle":"https://pith.science/pith/HV2IMFDC5Z742KYX5PZON44QBS/bundle.json","state":"https://pith.science/pith/HV2IMFDC5Z742KYX5PZON44QBS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HV2IMFDC5Z742KYX5PZON44QBS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:HV2IMFDC5Z742KYX5PZON44QBS","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":"e0d32be7bfa7973c5f7439df20174e9b01dee5a2f2fbc63f96f76c550b941989","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-07-20T17:43:30Z","title_canon_sha256":"2c9803321f1bb5272466f1bd2245e37e2004344dc1c8c9c35fe66284b7c01461"},"schema_version":"1.0","source":{"id":"2307.11063","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.11063","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"arxiv_version","alias_value":"2307.11063v2","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.11063","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_12","alias_value":"HV2IMFDC5Z74","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_16","alias_value":"HV2IMFDC5Z742KYX","created_at":"2026-07-05T07:15:57Z"},{"alias_kind":"pith_short_8","alias_value":"HV2IMFDC","created_at":"2026-07-05T07:15:57Z"}],"graph_snapshots":[{"event_id":"sha256:9291c1a8913539d9dd73eb297c31d74565681c9a661dbdd779b9301a447b0173","target":"graph","created_at":"2026-07-05T07:15:57Z","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/2307.11063/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore the double copy for self-dual gauge and gravitational fields on self-dual background spacetimes. We consider backgrounds associated to solutions of the second Plebanski equation and describe results with different gauge-fixing conditions. Finally we discuss the kinematic and $w$-algebras and the double copy, identifying modified Poisson structures and kinematic structure constants in the presence of the self-dual background. The self-dual plane wave and Eguchi-Hanson spacetimes are studied as examples and their respective $w$-algebras derived.","authors_text":"Bill Spence, Graham R. Brown, Joshua Gowdy","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-07-20T17:43:30Z","title":"Self-Dual Fields on Self-Dual Backgrounds and the Double Copy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.11063","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":"sha256:3dbac1bd160f87c8ed61db06b96f9cc251c83acc7f1d013bd51343d1e74ab860","target":"record","created_at":"2026-07-05T07:15:57Z","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":"e0d32be7bfa7973c5f7439df20174e9b01dee5a2f2fbc63f96f76c550b941989","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-07-20T17:43:30Z","title_canon_sha256":"2c9803321f1bb5272466f1bd2245e37e2004344dc1c8c9c35fe66284b7c01461"},"schema_version":"1.0","source":{"id":"2307.11063","kind":"arxiv","version":2}},"canonical_sha256":"3d74861462ee7fcd2b17ebf2e6f3900cadd2c69a9da46946082e2681310cef80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d74861462ee7fcd2b17ebf2e6f3900cadd2c69a9da46946082e2681310cef80","first_computed_at":"2026-07-05T07:15:57.661639Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:15:57.661639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FM8o9Y6bt1Hd4zU24xXHp2ULqhJ3HCNvJDpCRjiWcqkxPlhN4RtayHyNXnqW4/rcxi3+fmQquV6Oe3f04ISBDA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:15:57.662253Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.11063","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dbac1bd160f87c8ed61db06b96f9cc251c83acc7f1d013bd51343d1e74ab860","sha256:9291c1a8913539d9dd73eb297c31d74565681c9a661dbdd779b9301a447b0173"],"state_sha256":"e8e422bee6ec36bb095703803e6490fd706a55ce842a7a363e70732d5967c466"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"voPmssmVzlAhEYCZBeWqaKeNVxkfBUkGmAfHp1927KItg5hqR46/byDpO4vpl4zm9VycTg7VHlzZLgvjSuKkCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T03:16:02.943815Z","bundle_sha256":"49e946e61dd2dfc1be3c9b1d2f270382ba8b2735cc52a417f79665202b900b26"}}