{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1993:WZ6DE5H3GVYRJWB5ZDEIP5YFEJ","short_pith_number":"pith:WZ6DE5H3","canonical_record":{"source":{"id":"hep-th/9301068","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1993-01-18T04:56:41Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"ec6d013409daf667d7fff6a3c950d6f7a076b6428375d5a2659486243c870829","abstract_canon_sha256":"d763273b796862565cd982923ac372c44fd6ee238cd7a8bb93473212ca51eda8"},"schema_version":"1.0"},"canonical_sha256":"b67c3274fb357114d83dc8c887f7052240919b3137d14d908c6e98212a92b0d9","source":{"kind":"arxiv","id":"hep-th/9301068","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9301068","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9301068v1","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9301068","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_12","alias_value":"WZ6DE5H3GVYR","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_16","alias_value":"WZ6DE5H3GVYRJWB5","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_8","alias_value":"WZ6DE5H3","created_at":"2026-07-04T15:23:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1993:WZ6DE5H3GVYRJWB5ZDEIP5YFEJ","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/9301068","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"1993-01-18T04:56:41Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"ec6d013409daf667d7fff6a3c950d6f7a076b6428375d5a2659486243c870829","abstract_canon_sha256":"d763273b796862565cd982923ac372c44fd6ee238cd7a8bb93473212ca51eda8"},"schema_version":"1.0"},"canonical_sha256":"b67c3274fb357114d83dc8c887f7052240919b3137d14d908c6e98212a92b0d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:23:56.776938Z","signature_b64":"FlHkfJunCzPwZ4IMIrbKeQ7BAODrFCpurS8BYbhF5mazNozloq3XfS8hwaMzyrlvzh9riFpj/QiGAnaCxatsDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b67c3274fb357114d83dc8c887f7052240919b3137d14d908c6e98212a92b0d9","last_reissued_at":"2026-07-04T15:23:56.776522Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:23:56.776522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/9301068","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":"2026-07-04T15:23:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KGJwpoBC5restLNiutkJ0GmXbroDYeRXQy8V2fNdGgj8vXBGgsu4lj7LWis/p9qecr+Z3AvTUDYBjkIWpMg6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:47:02.779341Z"},"content_sha256":"1dee9a5cbc01187adf50f93e1280710b5433f20ea1a2033ed3030e02e8d83172","schema_version":"1.0","event_id":"sha256:1dee9a5cbc01187adf50f93e1280710b5433f20ea1a2033ed3030e02e8d83172"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1993:WZ6DE5H3GVYRJWB5ZDEIP5YFEJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two Dimensional QCD is a String Theory","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-th","authors_text":"David J. Gross, Washington Taylor","submitted_at":"1993-01-18T04:56:41Z","abstract_excerpt":"The partition function of two dimensional QCD on a Riemann surface of area $A$ is expanded as a power series in $1/N$ and $A$. It is shown that the coefficients of this expansion are precisely determined by a sum over maps from a two dimensional surface onto the two dimensional target space. Thus two dimensional QCD has a simple interpretation as a closed string theory."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9301068","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-th/9301068/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":"2026-07-04T15:23:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xAK6zU4CMekBrp37SDoNIM1wquufbE0Fg3Z+99b3AjUh7MTQKI/+uQ5PcwPbUjFcIGEYEvbSvhu3gjRzhIw8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:47:02.779839Z"},"content_sha256":"fb0c7a44bdd41a083c73e0c4ffba787a3ee6ae76c5ed52c40323d22bd523c9d2","schema_version":"1.0","event_id":"sha256:fb0c7a44bdd41a083c73e0c4ffba787a3ee6ae76c5ed52c40323d22bd523c9d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/bundle.json","state_url":"https://pith.science/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/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":"2026-08-03T16:47:02Z","links":{"resolver":"https://pith.science/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ","bundle":"https://pith.science/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/bundle.json","state":"https://pith.science/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WZ6DE5H3GVYRJWB5ZDEIP5YFEJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1993:WZ6DE5H3GVYRJWB5ZDEIP5YFEJ","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":"d763273b796862565cd982923ac372c44fd6ee238cd7a8bb93473212ca51eda8","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"hep-th","submitted_at":"1993-01-18T04:56:41Z","title_canon_sha256":"ec6d013409daf667d7fff6a3c950d6f7a076b6428375d5a2659486243c870829"},"schema_version":"1.0","source":{"id":"hep-th/9301068","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/9301068","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/9301068v1","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/9301068","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_12","alias_value":"WZ6DE5H3GVYR","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_16","alias_value":"WZ6DE5H3GVYRJWB5","created_at":"2026-07-04T15:23:56Z"},{"alias_kind":"pith_short_8","alias_value":"WZ6DE5H3","created_at":"2026-07-04T15:23:56Z"}],"graph_snapshots":[{"event_id":"sha256:fb0c7a44bdd41a083c73e0c4ffba787a3ee6ae76c5ed52c40323d22bd523c9d2","target":"graph","created_at":"2026-07-04T15:23:56Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-th/9301068/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The partition function of two dimensional QCD on a Riemann surface of area $A$ is expanded as a power series in $1/N$ and $A$. It is shown that the coefficients of this expansion are precisely determined by a sum over maps from a two dimensional surface onto the two dimensional target space. Thus two dimensional QCD has a simple interpretation as a closed string theory.","authors_text":"David J. Gross, Washington Taylor","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"1993-01-18T04:56:41Z","title":"Two Dimensional QCD is a String Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9301068","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":"sha256:1dee9a5cbc01187adf50f93e1280710b5433f20ea1a2033ed3030e02e8d83172","target":"record","created_at":"2026-07-04T15:23:56Z","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":"d763273b796862565cd982923ac372c44fd6ee238cd7a8bb93473212ca51eda8","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"hep-th","submitted_at":"1993-01-18T04:56:41Z","title_canon_sha256":"ec6d013409daf667d7fff6a3c950d6f7a076b6428375d5a2659486243c870829"},"schema_version":"1.0","source":{"id":"hep-th/9301068","kind":"arxiv","version":1}},"canonical_sha256":"b67c3274fb357114d83dc8c887f7052240919b3137d14d908c6e98212a92b0d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b67c3274fb357114d83dc8c887f7052240919b3137d14d908c6e98212a92b0d9","first_computed_at":"2026-07-04T15:23:56.776522Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:56.776522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FlHkfJunCzPwZ4IMIrbKeQ7BAODrFCpurS8BYbhF5mazNozloq3XfS8hwaMzyrlvzh9riFpj/QiGAnaCxatsDw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:56.776938Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/9301068","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1dee9a5cbc01187adf50f93e1280710b5433f20ea1a2033ed3030e02e8d83172","sha256:fb0c7a44bdd41a083c73e0c4ffba787a3ee6ae76c5ed52c40323d22bd523c9d2"],"state_sha256":"97fe9077050513557019cb6cd66c09ab16ed8bd1d281dad511d13ca0c0024d8e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qx7Sii6mykGOvIyMELSwhQUl+qX2Ifz5x6wRpZyKcG1pKkT75c6mwC8S2se/TofK3/4tZSlXu4sUhXsDmudECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:47:02.787003Z","bundle_sha256":"f6ac78e3beb91f1b1ff0de18418255ca0b47104be2ced39bc8ba78d59d0807db"}}