{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:EPXVGLCZBMQ3PK3KVQCQEVZ7TR","short_pith_number":"pith:EPXVGLCZ","canonical_record":{"source":{"id":"2005.05357","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-05-11T18:06:59Z","cross_cats_sorted":["hep-th","quant-ph"],"title_canon_sha256":"fb90f51f1c5173187fc75eec2f4adce56f720f73aedad977c3b6e3293042dd08","abstract_canon_sha256":"6128605b0da79bade36676767f47be118f2323b86ac2bc3a4a72a53c65c764b2"},"schema_version":"1.0"},"canonical_sha256":"23ef532c590b21b7ab6aac0502573f9c4c4792e8ebc7236ca1283213ddda9657","source":{"kind":"arxiv","id":"2005.05357","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.05357","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"arxiv_version","alias_value":"2005.05357v3","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.05357","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_12","alias_value":"EPXVGLCZBMQ3","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_16","alias_value":"EPXVGLCZBMQ3PK3K","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_8","alias_value":"EPXVGLCZ","created_at":"2026-07-05T01:39:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:EPXVGLCZBMQ3PK3KVQCQEVZ7TR","target":"record","payload":{"canonical_record":{"source":{"id":"2005.05357","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-05-11T18:06:59Z","cross_cats_sorted":["hep-th","quant-ph"],"title_canon_sha256":"fb90f51f1c5173187fc75eec2f4adce56f720f73aedad977c3b6e3293042dd08","abstract_canon_sha256":"6128605b0da79bade36676767f47be118f2323b86ac2bc3a4a72a53c65c764b2"},"schema_version":"1.0"},"canonical_sha256":"23ef532c590b21b7ab6aac0502573f9c4c4792e8ebc7236ca1283213ddda9657","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:39:13.518228Z","signature_b64":"f7jDxQ3K1tlkja0ZV2FQooBDWokCtuW056zCNRHrnGtSJCfEo79s60yXKsJvM3J35DN12ybGvfI753MR0iIoCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23ef532c590b21b7ab6aac0502573f9c4c4792e8ebc7236ca1283213ddda9657","last_reissued_at":"2026-07-05T01:39:13.517790Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:39:13.517790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.05357","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":"2026-07-05T01:39:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5JaQwD8P6AYZwnIleAHNSw4WdYMRiDgknhYZXZ4i0Gxb7lMcw+QWz6YGAc2CaY8csZFnT3TbUH5fdEuljzZfBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:03:41.381100Z"},"content_sha256":"608e7770cc97c40d90d623793d3a945b6fd219eb0c4d06342d51c4888704aae7","schema_version":"1.0","event_id":"sha256:608e7770cc97c40d90d623793d3a945b6fd219eb0c4d06342d51c4888704aae7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:EPXVGLCZBMQ3PK3KVQCQEVZ7TR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Singularity resolution depends on the clock","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th","quant-ph"],"primary_cat":"gr-qc","authors_text":"Luc\\'ia Men\\'endez-Pidal, Steffen Gielen","submitted_at":"2020-05-11T18:06:59Z","abstract_excerpt":"We study the quantum cosmology of a flat Friedmann-Lema\\^{i}tre-Robertson-Walker universe filled with a (free) massless scalar field and a perfect fluid that represents radiation or a cosmological constant whose value is not fixed by the action, as in unimodular gravity. We study two versions of the quantum theory: the first is based on a time coordinate conjugate to the radiation/dark energy matter component, i.e., conformal time (for radiation) or unimodular time. As shown by Gryb and Th\\'ebault, this quantum theory achieves a type of singularity resolution; we illustrate this and other prop"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.05357","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.05357/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:39:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q+p2xKvmX8t7B9tuyza+4cCmKOXVgK/C/6fdD+qEMET0/xZ76UVA/aWeMbqJEcNDkhXWraQe1/8M2NqTF1g4Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:03:41.382024Z"},"content_sha256":"4aff061a67c4f48b5f0590fca3ebf5f6fdd2658384d33cccfb11f374e59bcad9","schema_version":"1.0","event_id":"sha256:4aff061a67c4f48b5f0590fca3ebf5f6fdd2658384d33cccfb11f374e59bcad9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/bundle.json","state_url":"https://pith.science/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/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":"2026-08-03T17:03:41Z","links":{"resolver":"https://pith.science/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR","bundle":"https://pith.science/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/bundle.json","state":"https://pith.science/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EPXVGLCZBMQ3PK3KVQCQEVZ7TR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EPXVGLCZBMQ3PK3KVQCQEVZ7TR","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":"6128605b0da79bade36676767f47be118f2323b86ac2bc3a4a72a53c65c764b2","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-05-11T18:06:59Z","title_canon_sha256":"fb90f51f1c5173187fc75eec2f4adce56f720f73aedad977c3b6e3293042dd08"},"schema_version":"1.0","source":{"id":"2005.05357","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.05357","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"arxiv_version","alias_value":"2005.05357v3","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.05357","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_12","alias_value":"EPXVGLCZBMQ3","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_16","alias_value":"EPXVGLCZBMQ3PK3K","created_at":"2026-07-05T01:39:13Z"},{"alias_kind":"pith_short_8","alias_value":"EPXVGLCZ","created_at":"2026-07-05T01:39:13Z"}],"graph_snapshots":[{"event_id":"sha256:4aff061a67c4f48b5f0590fca3ebf5f6fdd2658384d33cccfb11f374e59bcad9","target":"graph","created_at":"2026-07-05T01:39:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2005.05357/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the quantum cosmology of a flat Friedmann-Lema\\^{i}tre-Robertson-Walker universe filled with a (free) massless scalar field and a perfect fluid that represents radiation or a cosmological constant whose value is not fixed by the action, as in unimodular gravity. We study two versions of the quantum theory: the first is based on a time coordinate conjugate to the radiation/dark energy matter component, i.e., conformal time (for radiation) or unimodular time. As shown by Gryb and Th\\'ebault, this quantum theory achieves a type of singularity resolution; we illustrate this and other prop","authors_text":"Luc\\'ia Men\\'endez-Pidal, Steffen Gielen","cross_cats":["hep-th","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-05-11T18:06:59Z","title":"Singularity resolution depends on the clock"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.05357","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":"sha256:608e7770cc97c40d90d623793d3a945b6fd219eb0c4d06342d51c4888704aae7","target":"record","created_at":"2026-07-05T01:39:13Z","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":"6128605b0da79bade36676767f47be118f2323b86ac2bc3a4a72a53c65c764b2","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-05-11T18:06:59Z","title_canon_sha256":"fb90f51f1c5173187fc75eec2f4adce56f720f73aedad977c3b6e3293042dd08"},"schema_version":"1.0","source":{"id":"2005.05357","kind":"arxiv","version":3}},"canonical_sha256":"23ef532c590b21b7ab6aac0502573f9c4c4792e8ebc7236ca1283213ddda9657","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23ef532c590b21b7ab6aac0502573f9c4c4792e8ebc7236ca1283213ddda9657","first_computed_at":"2026-07-05T01:39:13.517790Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:39:13.517790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f7jDxQ3K1tlkja0ZV2FQooBDWokCtuW056zCNRHrnGtSJCfEo79s60yXKsJvM3J35DN12ybGvfI753MR0iIoCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:39:13.518228Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.05357","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:608e7770cc97c40d90d623793d3a945b6fd219eb0c4d06342d51c4888704aae7","sha256:4aff061a67c4f48b5f0590fca3ebf5f6fdd2658384d33cccfb11f374e59bcad9"],"state_sha256":"0a7fb023a9cf9fa6a2d22cf1386121a194587073d437ff21f1c8e02474cac9d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7/Pwla+ZGBp1fbz3TIXcLTsd/+fg4JsznLxQAtEmY1v+iwK7JvjAmhYMaWbQLPzQB0lVcm6nbZQ9SqTk4tfkDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:03:41.387394Z","bundle_sha256":"98c448112bd64442735a21b8846351fbaa73e20af3de10a894c3b726bae237df"}}