{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ZZ55UIC4UDTJ3L7QXZ75JGBRGS","short_pith_number":"pith:ZZ55UIC4","canonical_record":{"source":{"id":"2201.09640","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2022-01-24T12:43:10Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"c79419d7fbdae30c3b413a3afd94f4b5c3d198859083f0cd6e34ed6ad989d521","abstract_canon_sha256":"32fdec1198f1f835a4c17eb5deb8bb5458e04ab688c113216a4128a19c03090c"},"schema_version":"1.0"},"canonical_sha256":"ce7bda205ca0e69daff0be7fd4983134bca8b2ac9635faacb40490e1073c0ece","source":{"kind":"arxiv","id":"2201.09640","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.09640","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"arxiv_version","alias_value":"2201.09640v2","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.09640","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_12","alias_value":"ZZ55UIC4UDTJ","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_16","alias_value":"ZZ55UIC4UDTJ3L7Q","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_8","alias_value":"ZZ55UIC4","created_at":"2026-07-05T05:19:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ZZ55UIC4UDTJ3L7QXZ75JGBRGS","target":"record","payload":{"canonical_record":{"source":{"id":"2201.09640","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2022-01-24T12:43:10Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"c79419d7fbdae30c3b413a3afd94f4b5c3d198859083f0cd6e34ed6ad989d521","abstract_canon_sha256":"32fdec1198f1f835a4c17eb5deb8bb5458e04ab688c113216a4128a19c03090c"},"schema_version":"1.0"},"canonical_sha256":"ce7bda205ca0e69daff0be7fd4983134bca8b2ac9635faacb40490e1073c0ece","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:19:13.773791Z","signature_b64":"GBs9tc2NtUB4M9laGGQrwCXw0qA4vq76lJzQ2o/7rwJLbe5E/lBCCbE8+7CmihwnjtbflidCT5siBFmfTM0xCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce7bda205ca0e69daff0be7fd4983134bca8b2ac9635faacb40490e1073c0ece","last_reissued_at":"2026-07-05T05:19:13.773299Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:19:13.773299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.09640","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":"2026-07-05T05:19:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TNSPOBY51zOiz3ngGaUolRukqGFv6QYdjqc/lmDzMbKhSx2c8fljzhYLd4y/uXvqXJMq2C8AgKWQjO88+5QUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T06:54:55.896509Z"},"content_sha256":"830e7315a2571b5fde205ad19395dfd1567fc3a8f54f81294071264d8fe10f72","schema_version":"1.0","event_id":"sha256:830e7315a2571b5fde205ad19395dfd1567fc3a8f54f81294071264d8fe10f72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ZZ55UIC4UDTJ3L7QXZ75JGBRGS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Schwarzian transformations at null infinity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Kevin Nguyen","submitted_at":"2022-01-24T12:43:10Z","abstract_excerpt":"I describe the Schwarzian behavior of the gravitational field at null infinity under superrotations, to be understood as an \\textit{unobservable} gauge artifact. To this end I review the induced geometry of null infinity and the construction of the gauge-invariant News tensor that characterizes gravitational radiation. I discuss potentially important implications for the celestial holography program, suggesting in particular that the uplift of the AdS$_3$/CFT$_2$ correspondence directly relates to the unobservable gauge sector."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.09640","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/2201.09640/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":"2026-07-05T05:19:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0rIdnY/+XgWHCt7ixyePKLGxADIwPADjpNyo89ujSICUIGVmg40ivuFKCAfPBVaM91G9VmdJmtqAdJJBzgkWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T06:54:55.897412Z"},"content_sha256":"29a26499f16b7f2999a870f0e1b493056b7e4813c37ccc41992e0d53ea637156","schema_version":"1.0","event_id":"sha256:29a26499f16b7f2999a870f0e1b493056b7e4813c37ccc41992e0d53ea637156"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/bundle.json","state_url":"https://pith.science/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/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":"2026-08-17T06:54:55Z","links":{"resolver":"https://pith.science/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS","bundle":"https://pith.science/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/bundle.json","state":"https://pith.science/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZZ55UIC4UDTJ3L7QXZ75JGBRGS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZZ55UIC4UDTJ3L7QXZ75JGBRGS","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":"32fdec1198f1f835a4c17eb5deb8bb5458e04ab688c113216a4128a19c03090c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2022-01-24T12:43:10Z","title_canon_sha256":"c79419d7fbdae30c3b413a3afd94f4b5c3d198859083f0cd6e34ed6ad989d521"},"schema_version":"1.0","source":{"id":"2201.09640","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.09640","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"arxiv_version","alias_value":"2201.09640v2","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.09640","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_12","alias_value":"ZZ55UIC4UDTJ","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_16","alias_value":"ZZ55UIC4UDTJ3L7Q","created_at":"2026-07-05T05:19:13Z"},{"alias_kind":"pith_short_8","alias_value":"ZZ55UIC4","created_at":"2026-07-05T05:19:13Z"}],"graph_snapshots":[{"event_id":"sha256:29a26499f16b7f2999a870f0e1b493056b7e4813c37ccc41992e0d53ea637156","target":"graph","created_at":"2026-07-05T05:19:13Z","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/2201.09640/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"I describe the Schwarzian behavior of the gravitational field at null infinity under superrotations, to be understood as an \\textit{unobservable} gauge artifact. To this end I review the induced geometry of null infinity and the construction of the gauge-invariant News tensor that characterizes gravitational radiation. I discuss potentially important implications for the celestial holography program, suggesting in particular that the uplift of the AdS$_3$/CFT$_2$ correspondence directly relates to the unobservable gauge sector.","authors_text":"Kevin Nguyen","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2022-01-24T12:43:10Z","title":"Schwarzian transformations at null infinity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.09640","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":"sha256:830e7315a2571b5fde205ad19395dfd1567fc3a8f54f81294071264d8fe10f72","target":"record","created_at":"2026-07-05T05:19:13Z","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":"32fdec1198f1f835a4c17eb5deb8bb5458e04ab688c113216a4128a19c03090c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2022-01-24T12:43:10Z","title_canon_sha256":"c79419d7fbdae30c3b413a3afd94f4b5c3d198859083f0cd6e34ed6ad989d521"},"schema_version":"1.0","source":{"id":"2201.09640","kind":"arxiv","version":2}},"canonical_sha256":"ce7bda205ca0e69daff0be7fd4983134bca8b2ac9635faacb40490e1073c0ece","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce7bda205ca0e69daff0be7fd4983134bca8b2ac9635faacb40490e1073c0ece","first_computed_at":"2026-07-05T05:19:13.773299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:19:13.773299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GBs9tc2NtUB4M9laGGQrwCXw0qA4vq76lJzQ2o/7rwJLbe5E/lBCCbE8+7CmihwnjtbflidCT5siBFmfTM0xCA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:19:13.773791Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.09640","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:830e7315a2571b5fde205ad19395dfd1567fc3a8f54f81294071264d8fe10f72","sha256:29a26499f16b7f2999a870f0e1b493056b7e4813c37ccc41992e0d53ea637156"],"state_sha256":"23487adcac7ef0693970145f386c0ee5993c88ddd1da2edf3b4db3a232d0ab65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WW6Oe6vuBhB2p9FgQ3amJwsLMm8D0PG5OdkmPC0NTis2mIR7BUORyddhByo3VDdGbhOApgYIOXAmQlpfWiHyDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T06:54:55.904623Z","bundle_sha256":"41c3a92b50f0865aeb947f8c09eec94541ca3da4c977f353de15fd26a5c7c0f9"}}