{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:HA3SG6HNIJJZGWWDHHXEEXL2PA","short_pith_number":"pith:HA3SG6HN","canonical_record":{"source":{"id":"1512.04071","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-12-13T15:57:09Z","cross_cats_sorted":["gr-qc","quant-ph"],"title_canon_sha256":"d8c32732023661eb17cf2013640621694d8146dc65bc2bec15ede4268c38bc59","abstract_canon_sha256":"446c0b73f2e0570eeac17d8f330bae2fe9e72b169bf20418930bfc2276066967"},"schema_version":"1.0"},"canonical_sha256":"38372378ed4253935ac339ee425d7a78369fdf9be6fd3594892bf9b0252c798c","source":{"kind":"arxiv","id":"1512.04071","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04071","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04071v1","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04071","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"HA3SG6HNIJJZ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"HA3SG6HNIJJZGWWD","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"HA3SG6HN","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:HA3SG6HNIJJZGWWDHHXEEXL2PA","target":"record","payload":{"canonical_record":{"source":{"id":"1512.04071","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-12-13T15:57:09Z","cross_cats_sorted":["gr-qc","quant-ph"],"title_canon_sha256":"d8c32732023661eb17cf2013640621694d8146dc65bc2bec15ede4268c38bc59","abstract_canon_sha256":"446c0b73f2e0570eeac17d8f330bae2fe9e72b169bf20418930bfc2276066967"},"schema_version":"1.0"},"canonical_sha256":"38372378ed4253935ac339ee425d7a78369fdf9be6fd3594892bf9b0252c798c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:01.575788Z","signature_b64":"HVutq2WbzX/TGzXffuYo3ZBKQs1viIXj/0ahSzkNHWApusw4kfyWlGhgWrcXVFw98HQ/qScDPSTFS/dCbgVpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"38372378ed4253935ac339ee425d7a78369fdf9be6fd3594892bf9b0252c798c","last_reissued_at":"2026-05-18T01:19:01.575392Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:01.575392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.04071","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":"2026-05-18T01:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LDuLYC1+nEWu0iqPMwFsUMTN8qiRWg/qqKOYuGqaZfHhKXWwFnv6Al6sHdRE8n1Zi/oKpZ1NBI4UD2jG7O9oBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:31:16.212520Z"},"content_sha256":"1fee8d6ea066c4b51fb5e4690522878a954c2a7c9cb446f0fde4792a9f075cb8","schema_version":"1.0","event_id":"sha256:1fee8d6ea066c4b51fb5e4690522878a954c2a7c9cb446f0fde4792a9f075cb8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:HA3SG6HNIJJZGWWDHHXEEXL2PA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Horizon Quantum Mechanics: a hitchhiker's guide to quantum black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","quant-ph"],"primary_cat":"hep-th","authors_text":"A. Giugno, O. Micu, R. Casadio","submitted_at":"2015-12-13T15:57:09Z","abstract_excerpt":"It is congruous with the quantum nature of the world to view the space-time geometry as an emergent structure that shows classical features only at some observational level. One can thus conceive the space-time manifold as a purely theoretical arena, where quantum states are defined, with the additional freedom of changing coordinates like any other symmetry. Observables, including positions and distances, should then be described by suitable operators acting on such quantum states. In principle, the top-down (canonical) quantisation of Einstein-Hilbert gravity falls right into this picture, b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04071","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":"2026-05-18T01:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y4E/C9N4mfN8PBpYW22opJNi0gPNuB31GO2mJb1setpZ0j+yvlPcktmpTvrrQTWh582s1sSDSXgam8Wtv+F5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:31:16.212890Z"},"content_sha256":"37e58402cc69ab87e4b7043945a24e60eef916ed5d722faa060c7311d17dfc4b","schema_version":"1.0","event_id":"sha256:37e58402cc69ab87e4b7043945a24e60eef916ed5d722faa060c7311d17dfc4b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/bundle.json","state_url":"https://pith.science/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/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":"2026-06-05T16:31:16Z","links":{"resolver":"https://pith.science/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA","bundle":"https://pith.science/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/bundle.json","state":"https://pith.science/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HA3SG6HNIJJZGWWDHHXEEXL2PA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HA3SG6HNIJJZGWWDHHXEEXL2PA","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":"446c0b73f2e0570eeac17d8f330bae2fe9e72b169bf20418930bfc2276066967","cross_cats_sorted":["gr-qc","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-12-13T15:57:09Z","title_canon_sha256":"d8c32732023661eb17cf2013640621694d8146dc65bc2bec15ede4268c38bc59"},"schema_version":"1.0","source":{"id":"1512.04071","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04071","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04071v1","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04071","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"HA3SG6HNIJJZ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"HA3SG6HNIJJZGWWD","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"HA3SG6HN","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:37e58402cc69ab87e4b7043945a24e60eef916ed5d722faa060c7311d17dfc4b","target":"graph","created_at":"2026-05-18T01:19:01Z","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":"It is congruous with the quantum nature of the world to view the space-time geometry as an emergent structure that shows classical features only at some observational level. One can thus conceive the space-time manifold as a purely theoretical arena, where quantum states are defined, with the additional freedom of changing coordinates like any other symmetry. Observables, including positions and distances, should then be described by suitable operators acting on such quantum states. In principle, the top-down (canonical) quantisation of Einstein-Hilbert gravity falls right into this picture, b","authors_text":"A. Giugno, O. Micu, R. Casadio","cross_cats":["gr-qc","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-12-13T15:57:09Z","title":"Horizon Quantum Mechanics: a hitchhiker's guide to quantum black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04071","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":"sha256:1fee8d6ea066c4b51fb5e4690522878a954c2a7c9cb446f0fde4792a9f075cb8","target":"record","created_at":"2026-05-18T01:19:01Z","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":"446c0b73f2e0570eeac17d8f330bae2fe9e72b169bf20418930bfc2276066967","cross_cats_sorted":["gr-qc","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-12-13T15:57:09Z","title_canon_sha256":"d8c32732023661eb17cf2013640621694d8146dc65bc2bec15ede4268c38bc59"},"schema_version":"1.0","source":{"id":"1512.04071","kind":"arxiv","version":1}},"canonical_sha256":"38372378ed4253935ac339ee425d7a78369fdf9be6fd3594892bf9b0252c798c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"38372378ed4253935ac339ee425d7a78369fdf9be6fd3594892bf9b0252c798c","first_computed_at":"2026-05-18T01:19:01.575392Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:01.575392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HVutq2WbzX/TGzXffuYo3ZBKQs1viIXj/0ahSzkNHWApusw4kfyWlGhgWrcXVFw98HQ/qScDPSTFS/dCbgVpAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:01.575788Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.04071","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fee8d6ea066c4b51fb5e4690522878a954c2a7c9cb446f0fde4792a9f075cb8","sha256:37e58402cc69ab87e4b7043945a24e60eef916ed5d722faa060c7311d17dfc4b"],"state_sha256":"ab28e25cc3dae9cb613d02fad20b59e2978b15ae23390da11f876703f56ecab6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0WrxHHCc8VxEecuMw2zyMkySrVQxYUt9kZASx0UC7ptGQwRN8ErhjroNVYKYbsvN+XK4bNGJ76xHvh+pd93RBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T16:31:16.215109Z","bundle_sha256":"dd6261899de02fe3aee5009b62883b24a2026427161adbde090b17e4f4f13fb0"}}