{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PCFV6JYLDIWHIFREJQWOKK4AXP","short_pith_number":"pith:PCFV6JYL","canonical_record":{"source":{"id":"1503.08207","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-03-27T20:00:17Z","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"title_canon_sha256":"b792d34343228fdc2b0f2a0e71d4845d18f2441ba8419c3abc26479d5aab54e0","abstract_canon_sha256":"f75e647070ccc8543c413a637416e2b8f61f1d634c29cd6f1383558345d9c63c"},"schema_version":"1.0"},"canonical_sha256":"788b5f270b1a2c7416244c2ce52b80bbf705fdd6201f7fc217a7e1d6b638ad05","source":{"kind":"arxiv","id":"1503.08207","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08207","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08207v2","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08207","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"pith_short_12","alias_value":"PCFV6JYLDIWH","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PCFV6JYLDIWHIFRE","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PCFV6JYL","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PCFV6JYLDIWHIFREJQWOKK4AXP","target":"record","payload":{"canonical_record":{"source":{"id":"1503.08207","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-03-27T20:00:17Z","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"title_canon_sha256":"b792d34343228fdc2b0f2a0e71d4845d18f2441ba8419c3abc26479d5aab54e0","abstract_canon_sha256":"f75e647070ccc8543c413a637416e2b8f61f1d634c29cd6f1383558345d9c63c"},"schema_version":"1.0"},"canonical_sha256":"788b5f270b1a2c7416244c2ce52b80bbf705fdd6201f7fc217a7e1d6b638ad05","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:01.726310Z","signature_b64":"KboAQMj8zfA8W8Z25k8GY9NRZ4oh2TM6BLWU7WGuCxe7QYN2efvmIlrVl0oCUduZS2d0rWQm/QSYG7mafHFRBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"788b5f270b1a2c7416244c2ce52b80bbf705fdd6201f7fc217a7e1d6b638ad05","last_reissued_at":"2026-05-18T01:22:01.725764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:01.725764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.08207","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":"2026-05-18T01:22:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OuxzepRcgzfLqFOQYUXMq4I6s3CVYxDYlugN7tZVjjdtMkI5nnIz++2k0922w5PEJQ+dtBNpMYjq4gHW/4UvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T09:11:14.126614Z"},"content_sha256":"405d8297be64b52f926e2cae225f7952e77119319343313661d3d0c619c8d198","schema_version":"1.0","event_id":"sha256:405d8297be64b52f926e2cae225f7952e77119319343313661d3d0c619c8d198"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PCFV6JYLDIWHIFREJQWOKK4AXP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hilbert space structure in quantum gravity: an algebraic perspective","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","math-ph","math.MP"],"primary_cat":"hep-th","authors_text":"Steven B. Giddings","submitted_at":"2015-03-27T20:00:17Z","abstract_excerpt":"If quantum gravity respects the principles of quantum mechanics, suitably generalized, it may be that a more viable approach to the theory is through identifying the relevant quantum structures rather than by quantizing classical spacetime. This viewpoint is supported by difficulties of such quantization, and by the apparent lack of a fundamental role for locality. In finite or discrete quantum systems, important structure is provided by tensor factorizations of the Hilbert space. However, even in local quantum field theory properties of the generic type III von Neumann algebras and of long ra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08207","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":"2026-05-18T01:22:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e/Dr1gfViGUzFdsjZp+9Fe2XP4gxYhS0q7xnttiJCSpLQRieChA7baM2ovCb+aPRXgfWBFucBLRBlgvaQc2TBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T09:11:14.126965Z"},"content_sha256":"adf9d5d06f9aa0e737a2ff90269e95b2340aec9fea4ac008d6eaffe19ab0cec3","schema_version":"1.0","event_id":"sha256:adf9d5d06f9aa0e737a2ff90269e95b2340aec9fea4ac008d6eaffe19ab0cec3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/bundle.json","state_url":"https://pith.science/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/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":"2026-06-30T09:11:14Z","links":{"resolver":"https://pith.science/pith/PCFV6JYLDIWHIFREJQWOKK4AXP","bundle":"https://pith.science/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/bundle.json","state":"https://pith.science/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PCFV6JYLDIWHIFREJQWOKK4AXP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PCFV6JYLDIWHIFREJQWOKK4AXP","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":"f75e647070ccc8543c413a637416e2b8f61f1d634c29cd6f1383558345d9c63c","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-03-27T20:00:17Z","title_canon_sha256":"b792d34343228fdc2b0f2a0e71d4845d18f2441ba8419c3abc26479d5aab54e0"},"schema_version":"1.0","source":{"id":"1503.08207","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08207","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08207v2","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08207","created_at":"2026-05-18T01:22:01Z"},{"alias_kind":"pith_short_12","alias_value":"PCFV6JYLDIWH","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PCFV6JYLDIWHIFRE","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PCFV6JYL","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:adf9d5d06f9aa0e737a2ff90269e95b2340aec9fea4ac008d6eaffe19ab0cec3","target":"graph","created_at":"2026-05-18T01:22:01Z","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":"If quantum gravity respects the principles of quantum mechanics, suitably generalized, it may be that a more viable approach to the theory is through identifying the relevant quantum structures rather than by quantizing classical spacetime. This viewpoint is supported by difficulties of such quantization, and by the apparent lack of a fundamental role for locality. In finite or discrete quantum systems, important structure is provided by tensor factorizations of the Hilbert space. However, even in local quantum field theory properties of the generic type III von Neumann algebras and of long ra","authors_text":"Steven B. Giddings","cross_cats":["gr-qc","math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-03-27T20:00:17Z","title":"Hilbert space structure in quantum gravity: an algebraic perspective"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08207","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":"sha256:405d8297be64b52f926e2cae225f7952e77119319343313661d3d0c619c8d198","target":"record","created_at":"2026-05-18T01:22:01Z","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":"f75e647070ccc8543c413a637416e2b8f61f1d634c29cd6f1383558345d9c63c","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-03-27T20:00:17Z","title_canon_sha256":"b792d34343228fdc2b0f2a0e71d4845d18f2441ba8419c3abc26479d5aab54e0"},"schema_version":"1.0","source":{"id":"1503.08207","kind":"arxiv","version":2}},"canonical_sha256":"788b5f270b1a2c7416244c2ce52b80bbf705fdd6201f7fc217a7e1d6b638ad05","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"788b5f270b1a2c7416244c2ce52b80bbf705fdd6201f7fc217a7e1d6b638ad05","first_computed_at":"2026-05-18T01:22:01.725764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:01.725764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KboAQMj8zfA8W8Z25k8GY9NRZ4oh2TM6BLWU7WGuCxe7QYN2efvmIlrVl0oCUduZS2d0rWQm/QSYG7mafHFRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:01.726310Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.08207","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:405d8297be64b52f926e2cae225f7952e77119319343313661d3d0c619c8d198","sha256:adf9d5d06f9aa0e737a2ff90269e95b2340aec9fea4ac008d6eaffe19ab0cec3"],"state_sha256":"c7c4d6c187d9ed26a1fbc4ab3ea13e232f6cd95caa24c4cc114a89c8d9687f8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TipCiDYHx9XbubFezqt1/Zpg9QSxs9VYDIFeLMK/zK7Ew3evwy3Sxk8I7Fgif1C3wjHnOQMG5m0qV408NKPwAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T09:11:14.128924Z","bundle_sha256":"5e795e06b8444e82d3bd5a3a4f8ee10e3cd60aac8086e2b94a0457a79f620c00"}}