{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:LPSZEEQ2LSGOCCMSTUXNL7NJ3C","short_pith_number":"pith:LPSZEEQ2","canonical_record":{"source":{"id":"hep-th/9611121","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1996-11-16T20:51:29Z","cross_cats_sorted":[],"title_canon_sha256":"ddfba4a681fd09c79c4eafdbbddafcfd8391236c47e870901b1db577dbb93f9b","abstract_canon_sha256":"57bf8afb481cabe98b8f8334479b6822f1aac8e32f9e504702a7b0e42accc3fa"},"schema_version":"1.0"},"canonical_sha256":"5be592121a5c8ce109929d2ed5fda9d8aab7c1e3e9bf5da749fc12abd62667c2","source":{"kind":"arxiv","id":"hep-th/9611121","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9611121","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9611121v1","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9611121","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"pith_short_12","alias_value":"LPSZEEQ2LSGO","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"LPSZEEQ2LSGOCCMS","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"LPSZEEQ2","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:LPSZEEQ2LSGOCCMSTUXNL7NJ3C","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/9611121","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1996-11-16T20:51:29Z","cross_cats_sorted":[],"title_canon_sha256":"ddfba4a681fd09c79c4eafdbbddafcfd8391236c47e870901b1db577dbb93f9b","abstract_canon_sha256":"57bf8afb481cabe98b8f8334479b6822f1aac8e32f9e504702a7b0e42accc3fa"},"schema_version":"1.0"},"canonical_sha256":"5be592121a5c8ce109929d2ed5fda9d8aab7c1e3e9bf5da749fc12abd62667c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:56.556453Z","signature_b64":"w1mnqGvPOE7iEwqBYeXbPYTLA5QLqPnp35AS5+r3i2xtGeiAlKM589KQjQx3Lij6pn3alScHpFhsSG4MlXXqDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5be592121a5c8ce109929d2ed5fda9d8aab7c1e3e9bf5da749fc12abd62667c2","last_reissued_at":"2026-05-18T01:05:56.555945Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:56.555945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/9611121","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:05:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1rd/SIFXhm+FjZKXv3upcfc0tjiHe/Aay8d93q4GDx4F6cWdC+DbNRCd4gv2yQsMsGFYTwpeblOkRR6T0TmlDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T02:25:36.137517Z"},"content_sha256":"4d51b33b066e2901e4872eadbcdb70afe3c8efa5ed8be1858b2a798542e7b308","schema_version":"1.0","event_id":"sha256:4d51b33b066e2901e4872eadbcdb70afe3c8efa5ed8be1858b2a798542e7b308"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:LPSZEEQ2LSGOCCMSTUXNL7NJ3C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Symmetries of 2-d Gravity","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Ioannis Giannakis (Rockefeller University)","submitted_at":"1996-11-16T20:51:29Z","abstract_excerpt":"Two-dimensional gravity in the light-cone gauge was shown to exhibit an underlying sl(2,R) current algebra. It is the purpose of this note to offer a possible explanation about the origin of this important algebra. The essential point is that two-dimensional gravity is governed by a topological field theory. The gauge group is sl(2,R) and it is this enhanced gauge group that yields Polyakov's current algebra."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9611121","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:05:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zuaefBTTjWN5Rm4UWnYg+tfxlq1OwAHtDFmPWr3WcR4dkIQLWxlXWAAhDv3Nt6KrEpPljUNgR6FccwMAlEM8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T02:25:36.137859Z"},"content_sha256":"55655ae533a1c604eba8532e3ef7dcc98962a9eba1e78473f5b7888f2448614e","schema_version":"1.0","event_id":"sha256:55655ae533a1c604eba8532e3ef7dcc98962a9eba1e78473f5b7888f2448614e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/bundle.json","state_url":"https://pith.science/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/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":"2026-06-26T02:25:36Z","links":{"resolver":"https://pith.science/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C","bundle":"https://pith.science/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/bundle.json","state":"https://pith.science/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LPSZEEQ2LSGOCCMSTUXNL7NJ3C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:LPSZEEQ2LSGOCCMSTUXNL7NJ3C","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":"57bf8afb481cabe98b8f8334479b6822f1aac8e32f9e504702a7b0e42accc3fa","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"1996-11-16T20:51:29Z","title_canon_sha256":"ddfba4a681fd09c79c4eafdbbddafcfd8391236c47e870901b1db577dbb93f9b"},"schema_version":"1.0","source":{"id":"hep-th/9611121","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9611121","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9611121v1","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9611121","created_at":"2026-05-18T01:05:56Z"},{"alias_kind":"pith_short_12","alias_value":"LPSZEEQ2LSGO","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"LPSZEEQ2LSGOCCMS","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"LPSZEEQ2","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:55655ae533a1c604eba8532e3ef7dcc98962a9eba1e78473f5b7888f2448614e","target":"graph","created_at":"2026-05-18T01:05:56Z","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":"Two-dimensional gravity in the light-cone gauge was shown to exhibit an underlying sl(2,R) current algebra. It is the purpose of this note to offer a possible explanation about the origin of this important algebra. The essential point is that two-dimensional gravity is governed by a topological field theory. The gauge group is sl(2,R) and it is this enhanced gauge group that yields Polyakov's current algebra.","authors_text":"Ioannis Giannakis (Rockefeller University)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"1996-11-16T20:51:29Z","title":"Symmetries of 2-d Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9611121","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":"sha256:4d51b33b066e2901e4872eadbcdb70afe3c8efa5ed8be1858b2a798542e7b308","target":"record","created_at":"2026-05-18T01:05:56Z","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":"57bf8afb481cabe98b8f8334479b6822f1aac8e32f9e504702a7b0e42accc3fa","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"1996-11-16T20:51:29Z","title_canon_sha256":"ddfba4a681fd09c79c4eafdbbddafcfd8391236c47e870901b1db577dbb93f9b"},"schema_version":"1.0","source":{"id":"hep-th/9611121","kind":"arxiv","version":1}},"canonical_sha256":"5be592121a5c8ce109929d2ed5fda9d8aab7c1e3e9bf5da749fc12abd62667c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5be592121a5c8ce109929d2ed5fda9d8aab7c1e3e9bf5da749fc12abd62667c2","first_computed_at":"2026-05-18T01:05:56.555945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:56.555945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w1mnqGvPOE7iEwqBYeXbPYTLA5QLqPnp35AS5+r3i2xtGeiAlKM589KQjQx3Lij6pn3alScHpFhsSG4MlXXqDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:56.556453Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/9611121","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d51b33b066e2901e4872eadbcdb70afe3c8efa5ed8be1858b2a798542e7b308","sha256:55655ae533a1c604eba8532e3ef7dcc98962a9eba1e78473f5b7888f2448614e"],"state_sha256":"b9e96d95d19d4ddd016367eecc88449b74a43d2441237c01860a2cebd1bc3c7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XtQMSD2gdAjpgHXhHN8iuKQhiGDe5Z8cUIk33YWeK8oiLvAUUKWk/+9onHE3dpFwYA5TwIzLudMWngA7JpLeAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T02:25:36.139861Z","bundle_sha256":"1cc6d772527c5d19d1685baa256d462c3fd236de4a10395ed482e59736c8029a"}}