{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WPYHV6B3WSFFWZOLSAGAUDUBB6","short_pith_number":"pith:WPYHV6B3","canonical_record":{"source":{"id":"1510.08766","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-10-29T16:30:15Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"0f29aef23dfaf0ca4050a7c73532cbedf279b62a628f81dff6ac796243382dfb","abstract_canon_sha256":"dd9fd0137d521808b1bd4b3e7b3b4b00264538a247a057cf572228c9f12b03eb"},"schema_version":"1.0"},"canonical_sha256":"b3f07af83bb48a5b65cb900c0a0e810f8afad947c8f8f13d6b83f809e52cc9c6","source":{"kind":"arxiv","id":"1510.08766","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.08766","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.08766v2","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08766","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"WPYHV6B3WSFF","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WPYHV6B3WSFFWZOL","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WPYHV6B3","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WPYHV6B3WSFFWZOLSAGAUDUBB6","target":"record","payload":{"canonical_record":{"source":{"id":"1510.08766","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-10-29T16:30:15Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"0f29aef23dfaf0ca4050a7c73532cbedf279b62a628f81dff6ac796243382dfb","abstract_canon_sha256":"dd9fd0137d521808b1bd4b3e7b3b4b00264538a247a057cf572228c9f12b03eb"},"schema_version":"1.0"},"canonical_sha256":"b3f07af83bb48a5b65cb900c0a0e810f8afad947c8f8f13d6b83f809e52cc9c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:30.512122Z","signature_b64":"CAzxsToVcDczeCjYvmrxUiVoGib6FDKZVWGUDPybitz7cn0MQj+qC+NiQ0I9pqZf7w0+uZe+r/AAJajJa/FFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3f07af83bb48a5b65cb900c0a0e810f8afad947c8f8f13d6b83f809e52cc9c6","last_reissued_at":"2026-05-18T01:12:30.511761Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:30.511761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.08766","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":"2026-05-18T01:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+PIlCeUji/BBIkhoEohfcydRdwxM4JP4x8yf/w6ft6K3ytZIILh2dRcetiJ15M8wVvPjaqws35qfyFCN6H9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:22:34.205686Z"},"content_sha256":"e3c5ebc94735ee6a0d13fc112a4c20f5d14f1b54c058d6bc402ccc4698da90e6","schema_version":"1.0","event_id":"sha256:e3c5ebc94735ee6a0d13fc112a4c20f5d14f1b54c058d6bc402ccc4698da90e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WPYHV6B3WSFFWZOLSAGAUDUBB6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational Exclusion of a Consistent Quantum Cosmology Scenario","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Aurelien Barrau, Boris Bolliet, Julien Grain, Susanne Schander","submitted_at":"2015-10-29T16:30:15Z","abstract_excerpt":"It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations. In general, only very ad hoc scenarios or hyper fine-tuned initial conditions can lead to observationally testable theories. Here we consider a well-defined and well motivated candidate quantum cosmology model that predicts inflation. Using the most recent observational constraints on the cosmic microwave background B modes, we show that the model is excluded for all its para"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08766","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":"2026-05-18T01:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aOtR/JuYiK5YDm2N1xK5WHonKWk9ZSRMyJDNXYFfEfy/TpWcZYSd01Fn9Uce4pVA0D5djH9WlHC+pmBWFJ2TAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:22:34.206419Z"},"content_sha256":"61b6f07c00d8fca55ca1fde202be9e1c72b572b7a93ace1670e0a3186c353678","schema_version":"1.0","event_id":"sha256:61b6f07c00d8fca55ca1fde202be9e1c72b572b7a93ace1670e0a3186c353678"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/bundle.json","state_url":"https://pith.science/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/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":"2026-05-25T17:22:34Z","links":{"resolver":"https://pith.science/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6","bundle":"https://pith.science/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/bundle.json","state":"https://pith.science/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPYHV6B3WSFFWZOLSAGAUDUBB6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WPYHV6B3WSFFWZOLSAGAUDUBB6","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":"dd9fd0137d521808b1bd4b3e7b3b4b00264538a247a057cf572228c9f12b03eb","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-10-29T16:30:15Z","title_canon_sha256":"0f29aef23dfaf0ca4050a7c73532cbedf279b62a628f81dff6ac796243382dfb"},"schema_version":"1.0","source":{"id":"1510.08766","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.08766","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.08766v2","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08766","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"WPYHV6B3WSFF","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WPYHV6B3WSFFWZOL","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WPYHV6B3","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:61b6f07c00d8fca55ca1fde202be9e1c72b572b7a93ace1670e0a3186c353678","target":"graph","created_at":"2026-05-18T01:12:30Z","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 often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations. In general, only very ad hoc scenarios or hyper fine-tuned initial conditions can lead to observationally testable theories. Here we consider a well-defined and well motivated candidate quantum cosmology model that predicts inflation. Using the most recent observational constraints on the cosmic microwave background B modes, we show that the model is excluded for all its para","authors_text":"Aurelien Barrau, Boris Bolliet, Julien Grain, Susanne Schander","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-10-29T16:30:15Z","title":"Observational Exclusion of a Consistent Quantum Cosmology Scenario"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08766","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:e3c5ebc94735ee6a0d13fc112a4c20f5d14f1b54c058d6bc402ccc4698da90e6","target":"record","created_at":"2026-05-18T01:12:30Z","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":"dd9fd0137d521808b1bd4b3e7b3b4b00264538a247a057cf572228c9f12b03eb","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-10-29T16:30:15Z","title_canon_sha256":"0f29aef23dfaf0ca4050a7c73532cbedf279b62a628f81dff6ac796243382dfb"},"schema_version":"1.0","source":{"id":"1510.08766","kind":"arxiv","version":2}},"canonical_sha256":"b3f07af83bb48a5b65cb900c0a0e810f8afad947c8f8f13d6b83f809e52cc9c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3f07af83bb48a5b65cb900c0a0e810f8afad947c8f8f13d6b83f809e52cc9c6","first_computed_at":"2026-05-18T01:12:30.511761Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:30.511761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CAzxsToVcDczeCjYvmrxUiVoGib6FDKZVWGUDPybitz7cn0MQj+qC+NiQ0I9pqZf7w0+uZe+r/AAJajJa/FFCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:30.512122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.08766","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3c5ebc94735ee6a0d13fc112a4c20f5d14f1b54c058d6bc402ccc4698da90e6","sha256:61b6f07c00d8fca55ca1fde202be9e1c72b572b7a93ace1670e0a3186c353678"],"state_sha256":"4b11f0bab5f9560619b8de8213899d9a43d6d0829344501aee324af4db519323"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pEyIdyBJsvioQfNQkmIo/epGpm6NRNDHMzaLXTxeAvwqwH8Qa94tesZv4Eb8+wNzmV+17dbt3xs8QFnJYRSpCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:22:34.209996Z","bundle_sha256":"4379c4e875fe575f8bda7e3ea8bd5b1196cc7ef037b97b4f941a8a8918b1884d"}}