{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:VGP5KYLUJI73GJL4SQOYIJEBCV","short_pith_number":"pith:VGP5KYLU","canonical_record":{"source":{"id":"1305.3479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-05-15T14:01:33Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"99d1a35858f24d333cd46f8e8f78fa41cd897892f45c0ac010fe833bbd4020bd","abstract_canon_sha256":"7830973d7d27c6bb7778fed02ac4579d0e8b682d7079aa23fe55cfea04c21e0c"},"schema_version":"1.0"},"canonical_sha256":"a99fd561744a3fb3257c941d842481157046ede5afff366f17225b126eb403c0","source":{"kind":"arxiv","id":"1305.3479","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3479","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3479v1","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3479","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"pith_short_12","alias_value":"VGP5KYLUJI73","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VGP5KYLUJI73GJL4","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VGP5KYLU","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:VGP5KYLUJI73GJL4SQOYIJEBCV","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-05-15T14:01:33Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"99d1a35858f24d333cd46f8e8f78fa41cd897892f45c0ac010fe833bbd4020bd","abstract_canon_sha256":"7830973d7d27c6bb7778fed02ac4579d0e8b682d7079aa23fe55cfea04c21e0c"},"schema_version":"1.0"},"canonical_sha256":"a99fd561744a3fb3257c941d842481157046ede5afff366f17225b126eb403c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:49:56.935136Z","signature_b64":"PnSza229DpWtUJP+dzsVOodqqjtKdDrskVIpo5lGNunoTOy+3gZ5xvaa1BSkCQKrEvOVNWa6tkbxYTUZBXdJDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a99fd561744a3fb3257c941d842481157046ede5afff366f17225b126eb403c0","last_reissued_at":"2026-05-18T01:49:56.934610Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:49:56.934610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3479","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":"2026-05-18T01:49:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eaG8oj66wYrxPtKVngr2+9spYPWLVBBegsC6+9199TfCF9TcJh1YWbtxR6cg2c3Q8P5NXDpdp64sH2uJj5qBAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T18:48:59.920421Z"},"content_sha256":"50c805a9a2220ae2cd00d66f152d9823e8767796478e35798a5e32a9085638bd","schema_version":"1.0","event_id":"sha256:50c805a9a2220ae2cd00d66f152d9823e8767796478e35798a5e32a9085638bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:VGP5KYLUJI73GJL4SQOYIJEBCV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"From bricks to quasinormal modes: A new perspective on black hole entropy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Michele Arzano, Olaf Dreyer, Stefano Bianco","submitted_at":"2013-05-15T14:01:33Z","abstract_excerpt":"Calculations of black hole entropy based on the counting of modes of a quantum field propagating in a Schwarzschild background need to be regularized in the vicinity of the horizon. To obtain the Bekenstein-Hawking result the short distance cut-off needs to be fixed by hand. In this note we give an argument for obtaining this cut-off in a natural fashion. We do this by modelling the black hole by its set of quasinormal modes. The horizon then becomes a extended region: the quantum ergosphere. The interaction of the quantum ergosphere and the quantum field provides a natural regularization mech"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3479","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":"2026-05-18T01:49:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kyZggRAt/RQvNxgXFCQkQArb/01g4ydXqYcPu1oT0oBDQN9YKukauYPyMdHbOJEPsQ6nmT0EIFjAX5IpCLnrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T18:48:59.921099Z"},"content_sha256":"045aa6e152ad12e7395cde4607b226791534a14fcffa2e25e94af86dee21bc43","schema_version":"1.0","event_id":"sha256:045aa6e152ad12e7395cde4607b226791534a14fcffa2e25e94af86dee21bc43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/bundle.json","state_url":"https://pith.science/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/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":"2026-06-07T18:48:59Z","links":{"resolver":"https://pith.science/pith/VGP5KYLUJI73GJL4SQOYIJEBCV","bundle":"https://pith.science/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/bundle.json","state":"https://pith.science/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VGP5KYLUJI73GJL4SQOYIJEBCV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VGP5KYLUJI73GJL4SQOYIJEBCV","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":"7830973d7d27c6bb7778fed02ac4579d0e8b682d7079aa23fe55cfea04c21e0c","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-05-15T14:01:33Z","title_canon_sha256":"99d1a35858f24d333cd46f8e8f78fa41cd897892f45c0ac010fe833bbd4020bd"},"schema_version":"1.0","source":{"id":"1305.3479","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3479","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3479v1","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3479","created_at":"2026-05-18T01:49:56Z"},{"alias_kind":"pith_short_12","alias_value":"VGP5KYLUJI73","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VGP5KYLUJI73GJL4","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VGP5KYLU","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:045aa6e152ad12e7395cde4607b226791534a14fcffa2e25e94af86dee21bc43","target":"graph","created_at":"2026-05-18T01:49:56Z","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":"Calculations of black hole entropy based on the counting of modes of a quantum field propagating in a Schwarzschild background need to be regularized in the vicinity of the horizon. To obtain the Bekenstein-Hawking result the short distance cut-off needs to be fixed by hand. In this note we give an argument for obtaining this cut-off in a natural fashion. We do this by modelling the black hole by its set of quasinormal modes. The horizon then becomes a extended region: the quantum ergosphere. The interaction of the quantum ergosphere and the quantum field provides a natural regularization mech","authors_text":"Michele Arzano, Olaf Dreyer, Stefano Bianco","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-05-15T14:01:33Z","title":"From bricks to quasinormal modes: A new perspective on black hole entropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3479","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":"sha256:50c805a9a2220ae2cd00d66f152d9823e8767796478e35798a5e32a9085638bd","target":"record","created_at":"2026-05-18T01:49:56Z","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":"7830973d7d27c6bb7778fed02ac4579d0e8b682d7079aa23fe55cfea04c21e0c","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-05-15T14:01:33Z","title_canon_sha256":"99d1a35858f24d333cd46f8e8f78fa41cd897892f45c0ac010fe833bbd4020bd"},"schema_version":"1.0","source":{"id":"1305.3479","kind":"arxiv","version":1}},"canonical_sha256":"a99fd561744a3fb3257c941d842481157046ede5afff366f17225b126eb403c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a99fd561744a3fb3257c941d842481157046ede5afff366f17225b126eb403c0","first_computed_at":"2026-05-18T01:49:56.934610Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:56.934610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PnSza229DpWtUJP+dzsVOodqqjtKdDrskVIpo5lGNunoTOy+3gZ5xvaa1BSkCQKrEvOVNWa6tkbxYTUZBXdJDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:56.935136Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3479","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50c805a9a2220ae2cd00d66f152d9823e8767796478e35798a5e32a9085638bd","sha256:045aa6e152ad12e7395cde4607b226791534a14fcffa2e25e94af86dee21bc43"],"state_sha256":"601f03fb43262f5f5ef770c86de3d1f7c29f6d8cdb24522c11f2d695a2e48e00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KDnFCeeAqY3oB6KUx3kTFZvdy1qjc+GQGqlLqfSLaMyrsNVIvbJk5cBzHlDQ4nZGoUnyYTPs1kFjtQ/7QAIJBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T18:48:59.924643Z","bundle_sha256":"7324ee9c8df74acd80c0f64831d0cd56c0c63bc378659c3f4a497d9b1146294b"}}