{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:AT36VTOP3J5HFUBJNXWZAW3IU6","short_pith_number":"pith:AT36VTOP","canonical_record":{"source":{"id":"1507.04347","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-15T20:00:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"34bad014390f07fe90ebc0f35bbd8e982c7613d65d84d784de446b7e517c5a14","abstract_canon_sha256":"b42633c7f6db2cc6acdcb8f5d5f8b07dc36603e9b8f72a3edad9cfa85b6642a1"},"schema_version":"1.0"},"canonical_sha256":"04f7eacdcfda7a72d0296ded905b68a78b083d92991e500c26bcf37ace8e8306","source":{"kind":"arxiv","id":"1507.04347","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.04347","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"arxiv_version","alias_value":"1507.04347v2","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04347","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"pith_short_12","alias_value":"AT36VTOP3J5H","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"AT36VTOP3J5HFUBJ","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"AT36VTOP","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:AT36VTOP3J5HFUBJNXWZAW3IU6","target":"record","payload":{"canonical_record":{"source":{"id":"1507.04347","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-15T20:00:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"34bad014390f07fe90ebc0f35bbd8e982c7613d65d84d784de446b7e517c5a14","abstract_canon_sha256":"b42633c7f6db2cc6acdcb8f5d5f8b07dc36603e9b8f72a3edad9cfa85b6642a1"},"schema_version":"1.0"},"canonical_sha256":"04f7eacdcfda7a72d0296ded905b68a78b083d92991e500c26bcf37ace8e8306","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:45.361514Z","signature_b64":"9ptCBhtRowhrXh06qfeb9yC5At8bMQaQEV8uuPnqcThQpvXJE5OVhwX1GCU9dOqg5vvtCNdDJ6LsjVz5ne6qCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"04f7eacdcfda7a72d0296ded905b68a78b083d92991e500c26bcf37ace8e8306","last_reissued_at":"2026-05-18T01:29:45.361082Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:45.361082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.04347","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":"2026-05-18T01:29:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q9IGCQ5wGgBuJ+mRaqk8Qfu1c8khf8ZkIROpugm9TGe3eLFxtTDzeA8OxOOxEFBy6wEivGAuJN9LcHlrdDsZDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:26:09.694380Z"},"content_sha256":"08eaf120692d561995dd9f48600d1525ae7d1734276c7b22655449cf9ba2de78","schema_version":"1.0","event_id":"sha256:08eaf120692d561995dd9f48600d1525ae7d1734276c7b22655449cf9ba2de78"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:AT36VTOP3J5HFUBJNXWZAW3IU6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Microscopic Entropy of the Magnetised Extremal Reissner-Nordstrom Black Hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Marco Astorino","submitted_at":"2015-07-15T20:00:33Z","abstract_excerpt":"The extremal Reissner-Nordstrom black hole embedded in a Melvin-like magnetic universe is studied in the framework of the Kerr/CFT correspondence. The near horizon geometry can be written as a warped and twisted product of $AdS_2 \\times S^2$, also in presence of an axial external magnetic field that deforms the black hole. The central charge of the Virasoro algebra can be extracted from the asymptotic symmetries. Using the Cardy formula for the microscopic statistical entropy of the dual two-dimensional CFT, the Bekenstein-Hawking entropy, for this charged and magnetised black hole, is reprodu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04347","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":""},"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":"2026-05-18T01:29:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6kVo2fMeu3ItzPtGnpAdSX5R5V9ZijqlrwcQBmB2Qul2YYGVC3/qxNr1SqrEgbJk5lqaDq3/1fDvX/WDGc27Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:26:09.694725Z"},"content_sha256":"ea52d51ab94077ec610c27879992ddb969b512b99afd24959c5f621944ce0bf0","schema_version":"1.0","event_id":"sha256:ea52d51ab94077ec610c27879992ddb969b512b99afd24959c5f621944ce0bf0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/bundle.json","state_url":"https://pith.science/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/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":"2026-06-04T20:26:09Z","links":{"resolver":"https://pith.science/pith/AT36VTOP3J5HFUBJNXWZAW3IU6","bundle":"https://pith.science/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/bundle.json","state":"https://pith.science/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AT36VTOP3J5HFUBJNXWZAW3IU6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:AT36VTOP3J5HFUBJNXWZAW3IU6","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":"b42633c7f6db2cc6acdcb8f5d5f8b07dc36603e9b8f72a3edad9cfa85b6642a1","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-15T20:00:33Z","title_canon_sha256":"34bad014390f07fe90ebc0f35bbd8e982c7613d65d84d784de446b7e517c5a14"},"schema_version":"1.0","source":{"id":"1507.04347","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.04347","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"arxiv_version","alias_value":"1507.04347v2","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04347","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"pith_short_12","alias_value":"AT36VTOP3J5H","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"AT36VTOP3J5HFUBJ","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"AT36VTOP","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:ea52d51ab94077ec610c27879992ddb969b512b99afd24959c5f621944ce0bf0","target":"graph","created_at":"2026-05-18T01:29:45Z","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 extremal Reissner-Nordstrom black hole embedded in a Melvin-like magnetic universe is studied in the framework of the Kerr/CFT correspondence. The near horizon geometry can be written as a warped and twisted product of $AdS_2 \\times S^2$, also in presence of an axial external magnetic field that deforms the black hole. The central charge of the Virasoro algebra can be extracted from the asymptotic symmetries. Using the Cardy formula for the microscopic statistical entropy of the dual two-dimensional CFT, the Bekenstein-Hawking entropy, for this charged and magnetised black hole, is reprodu","authors_text":"Marco Astorino","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-15T20:00:33Z","title":"Microscopic Entropy of the Magnetised Extremal Reissner-Nordstrom Black Hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04347","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":"sha256:08eaf120692d561995dd9f48600d1525ae7d1734276c7b22655449cf9ba2de78","target":"record","created_at":"2026-05-18T01:29:45Z","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":"b42633c7f6db2cc6acdcb8f5d5f8b07dc36603e9b8f72a3edad9cfa85b6642a1","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-15T20:00:33Z","title_canon_sha256":"34bad014390f07fe90ebc0f35bbd8e982c7613d65d84d784de446b7e517c5a14"},"schema_version":"1.0","source":{"id":"1507.04347","kind":"arxiv","version":2}},"canonical_sha256":"04f7eacdcfda7a72d0296ded905b68a78b083d92991e500c26bcf37ace8e8306","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04f7eacdcfda7a72d0296ded905b68a78b083d92991e500c26bcf37ace8e8306","first_computed_at":"2026-05-18T01:29:45.361082Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:45.361082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9ptCBhtRowhrXh06qfeb9yC5At8bMQaQEV8uuPnqcThQpvXJE5OVhwX1GCU9dOqg5vvtCNdDJ6LsjVz5ne6qCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:45.361514Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.04347","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08eaf120692d561995dd9f48600d1525ae7d1734276c7b22655449cf9ba2de78","sha256:ea52d51ab94077ec610c27879992ddb969b512b99afd24959c5f621944ce0bf0"],"state_sha256":"3f1a1395722999f474f12901c56fed2d2a4d1dd6703b03911afa438d6fc621d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcfGpxItXiw8zPRN7c5c9O9238FX5VvcYlMhezwqPmYT5BUmZlyTQR7463aihe8SlIshHMqdFMu+15dL2fPjBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T20:26:09.696757Z","bundle_sha256":"2895cb8a1ca5cc52d27c57c9bd81befe16ee31f731a76a1b94ae0d05a8ee8bed"}}