{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:6U2XS2OSMQJEROLKAREXYFWB6U","short_pith_number":"pith:6U2XS2OS","canonical_record":{"source":{"id":"hep-th/0107140","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2001-07-17T15:27:23Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"db2f8863f3616df354524541b84ff2fcd1d6ed656691c6a90c109eac12255849","abstract_canon_sha256":"c0c80fb51c85b577966565f5872ad9733de043ff71d08387475f609420f30e59"},"schema_version":"1.0"},"canonical_sha256":"f5357969d2641248b96a04497c16c1f53b16c40ec7aa51ac6140838836c212cd","source":{"kind":"arxiv","id":"hep-th/0107140","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0107140","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0107140v3","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0107140","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"pith_short_12","alias_value":"6U2XS2OSMQJE","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"6U2XS2OSMQJEROLK","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"6U2XS2OS","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:6U2XS2OSMQJEROLKAREXYFWB6U","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/0107140","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2001-07-17T15:27:23Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"db2f8863f3616df354524541b84ff2fcd1d6ed656691c6a90c109eac12255849","abstract_canon_sha256":"c0c80fb51c85b577966565f5872ad9733de043ff71d08387475f609420f30e59"},"schema_version":"1.0"},"canonical_sha256":"f5357969d2641248b96a04497c16c1f53b16c40ec7aa51ac6140838836c212cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:36:11.849609Z","signature_b64":"Mgj1s3BXsxZxADduDYo6LsQJ7Fkdg4prE5gn215ZoYTcWZmvSqVTTdtTp2Oe+cgUFIjOkgang8Rff3+3K6fHBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5357969d2641248b96a04497c16c1f53b16c40ec7aa51ac6140838836c212cd","last_reissued_at":"2026-05-18T02:36:11.849173Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:36:11.849173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/0107140","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:36:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6tG/So1CH3y96hCxAmaDuY7g34UpWKFqT+1tzr3iQdSt35q3jJ55EbkyKkg7o7XYfH2yJPN5g+6NZlus5/01Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:25:03.179946Z"},"content_sha256":"ad418a3d149e37eba0b7974422b27879cde574bbd640d9ff7fdbd5b944d21dbd","schema_version":"1.0","event_id":"sha256:ad418a3d149e37eba0b7974422b27879cde574bbd640d9ff7fdbd5b944d21dbd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:6U2XS2OSMQJEROLKAREXYFWB6U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superstrings in 2D Backgrounds with R-R Flux and New Extremal Black Holes","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Brenno Carlini Vallilo, Nathan Berkovits, Sergei Gukov","submitted_at":"2001-07-17T15:27:23Z","abstract_excerpt":"The hybrid formalism is used to quantize the superstring compactified to two-dimensional target-space in a manifestly spacetime supersymmetric manner. A quantizable sigma model action is then constructed for the Type II superstring in curved two-dimensional supergravity backgrounds which can include Ramond-Ramond flux. Such curved backgrounds include Calabi-Yau four-fold compactifications with Ramond-Ramond flux, and new extremal black hole solutions in two-dimensional dilaton supergravity theory. These black hole solutions are a natural generalization of the CGHS model and might be possible t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0107140","kind":"arxiv","version":3},"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":"2026-05-18T02:36:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SEiDIE0qtpayIXdFAVC5IedRF21eV//qqR9NWI1ySErAmN2DkLlLK1b4SdEBgykRkOgaTtnC+0BuKImG1v0RAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:25:03.181265Z"},"content_sha256":"fe726a107b49a8d693988d8d417a0362134889163d3c98e16071dc980c65f673","schema_version":"1.0","event_id":"sha256:fe726a107b49a8d693988d8d417a0362134889163d3c98e16071dc980c65f673"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6U2XS2OSMQJEROLKAREXYFWB6U/bundle.json","state_url":"https://pith.science/pith/6U2XS2OSMQJEROLKAREXYFWB6U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6U2XS2OSMQJEROLKAREXYFWB6U/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":"2026-05-23T11:25:03Z","links":{"resolver":"https://pith.science/pith/6U2XS2OSMQJEROLKAREXYFWB6U","bundle":"https://pith.science/pith/6U2XS2OSMQJEROLKAREXYFWB6U/bundle.json","state":"https://pith.science/pith/6U2XS2OSMQJEROLKAREXYFWB6U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6U2XS2OSMQJEROLKAREXYFWB6U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:6U2XS2OSMQJEROLKAREXYFWB6U","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":"c0c80fb51c85b577966565f5872ad9733de043ff71d08387475f609420f30e59","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"2001-07-17T15:27:23Z","title_canon_sha256":"db2f8863f3616df354524541b84ff2fcd1d6ed656691c6a90c109eac12255849"},"schema_version":"1.0","source":{"id":"hep-th/0107140","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0107140","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0107140v3","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0107140","created_at":"2026-05-18T02:36:11Z"},{"alias_kind":"pith_short_12","alias_value":"6U2XS2OSMQJE","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"6U2XS2OSMQJEROLK","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"6U2XS2OS","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:fe726a107b49a8d693988d8d417a0362134889163d3c98e16071dc980c65f673","target":"graph","created_at":"2026-05-18T02:36:11Z","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":"The hybrid formalism is used to quantize the superstring compactified to two-dimensional target-space in a manifestly spacetime supersymmetric manner. A quantizable sigma model action is then constructed for the Type II superstring in curved two-dimensional supergravity backgrounds which can include Ramond-Ramond flux. Such curved backgrounds include Calabi-Yau four-fold compactifications with Ramond-Ramond flux, and new extremal black hole solutions in two-dimensional dilaton supergravity theory. These black hole solutions are a natural generalization of the CGHS model and might be possible t","authors_text":"Brenno Carlini Vallilo, Nathan Berkovits, Sergei Gukov","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2001-07-17T15:27:23Z","title":"Superstrings in 2D Backgrounds with R-R Flux and New Extremal Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0107140","kind":"arxiv","version":3},"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:ad418a3d149e37eba0b7974422b27879cde574bbd640d9ff7fdbd5b944d21dbd","target":"record","created_at":"2026-05-18T02:36:11Z","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":"c0c80fb51c85b577966565f5872ad9733de043ff71d08387475f609420f30e59","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"2001-07-17T15:27:23Z","title_canon_sha256":"db2f8863f3616df354524541b84ff2fcd1d6ed656691c6a90c109eac12255849"},"schema_version":"1.0","source":{"id":"hep-th/0107140","kind":"arxiv","version":3}},"canonical_sha256":"f5357969d2641248b96a04497c16c1f53b16c40ec7aa51ac6140838836c212cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5357969d2641248b96a04497c16c1f53b16c40ec7aa51ac6140838836c212cd","first_computed_at":"2026-05-18T02:36:11.849173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:11.849173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mgj1s3BXsxZxADduDYo6LsQJ7Fkdg4prE5gn215ZoYTcWZmvSqVTTdtTp2Oe+cgUFIjOkgang8Rff3+3K6fHBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:11.849609Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0107140","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad418a3d149e37eba0b7974422b27879cde574bbd640d9ff7fdbd5b944d21dbd","sha256:fe726a107b49a8d693988d8d417a0362134889163d3c98e16071dc980c65f673"],"state_sha256":"3fce5a5838aaa58939fb6585d54aa828cec4c0bac4033cf80cab3a7978d52682"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ATasTl1ya6VjmsPNDH3jd1ZEAWcABc6BfPzDL9Y/LlmDmkG9OQYgA5r2EZiaA70BV1yWmjlx6/fC1OJwzkFoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T11:25:03.185222Z","bundle_sha256":"184f6048872ab420e4efc32c5d4c1add6e62eba15007b66cad19e6d3be85036d"}}