{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:UY4XFCL2Z4SYAB2FBIFXPEJZEJ","short_pith_number":"pith:UY4XFCL2","canonical_record":{"source":{"id":"gr-qc/0602086","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2006-02-22T20:22:34Z","cross_cats_sorted":["astro-ph","hep-th"],"title_canon_sha256":"5dc4e24ec9b216404dbc4bbf435f24505fe8453a5cf2f30e2947f65226f0b3f4","abstract_canon_sha256":"34d45d5bb787a044df11f9acc059282bc65a30dc53af109e6db4604f2f6cc234"},"schema_version":"1.0"},"canonical_sha256":"a63972897acf258007450a0b779139227e130a127752a2c033f9f5f53245c820","source":{"kind":"arxiv","id":"gr-qc/0602086","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0602086","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0602086v2","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0602086","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_12","alias_value":"UY4XFCL2Z4SY","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_16","alias_value":"UY4XFCL2Z4SYAB2F","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_8","alias_value":"UY4XFCL2","created_at":"2026-07-04T15:19:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:UY4XFCL2Z4SYAB2FBIFXPEJZEJ","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/0602086","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2006-02-22T20:22:34Z","cross_cats_sorted":["astro-ph","hep-th"],"title_canon_sha256":"5dc4e24ec9b216404dbc4bbf435f24505fe8453a5cf2f30e2947f65226f0b3f4","abstract_canon_sha256":"34d45d5bb787a044df11f9acc059282bc65a30dc53af109e6db4604f2f6cc234"},"schema_version":"1.0"},"canonical_sha256":"a63972897acf258007450a0b779139227e130a127752a2c033f9f5f53245c820","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:19:44.680921Z","signature_b64":"4259bbU9jkIB+MhEv7cIIf0hZ9pI0EihRR62su2F/z701U3SPro31bEiSMltZT7me0Ftwn6O4iIHtxWMWLqTCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a63972897acf258007450a0b779139227e130a127752a2c033f9f5f53245c820","last_reissued_at":"2026-07-04T15:19:44.680481Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:19:44.680481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/0602086","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":"2026-07-04T15:19:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JmUAeLyWEk0KXdky5N2+oPNCxUdx2ucKwQ6tdtKXIzJAPNIzFdpMS7zYuJRBD76h2c2GIyXiP+9A35LedIs0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:03:00.732819Z"},"content_sha256":"97ea340604bf945646f6eccce968f6731ac8567101426fcd8439e9eb32dc7386","schema_version":"1.0","event_id":"sha256:97ea340604bf945646f6eccce968f6731ac8567101426fcd8439e9eb32dc7386"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:UY4XFCL2Z4SYAB2FBIFXPEJZEJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Nature of the Big Bang","license":"","headline":"","cross_cats":["astro-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Abhay Ashtekar, Parampreet Singh, Tomasz Pawlowski","submitted_at":"2006-02-22T20:22:34Z","abstract_excerpt":"Some long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum cosmology are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0602086","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/gr-qc/0602086/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":"2026-07-04T15:19:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x24z1TB6sIrzMZozULVZgUdWL9HCLIWs0W+n2RQBxWEagbB8QAcfCzA8pANFoBBttax8Z9QQp90wTDnbPYF1Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:03:00.733324Z"},"content_sha256":"29edbe645156669a4e300523c1b94d64fdba38412c2af55dd9c99ccf7d1cc7c7","schema_version":"1.0","event_id":"sha256:29edbe645156669a4e300523c1b94d64fdba38412c2af55dd9c99ccf7d1cc7c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/bundle.json","state_url":"https://pith.science/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/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":"2026-08-04T17:03:00Z","links":{"resolver":"https://pith.science/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ","bundle":"https://pith.science/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/bundle.json","state":"https://pith.science/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UY4XFCL2Z4SYAB2FBIFXPEJZEJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:UY4XFCL2Z4SYAB2FBIFXPEJZEJ","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":"34d45d5bb787a044df11f9acc059282bc65a30dc53af109e6db4604f2f6cc234","cross_cats_sorted":["astro-ph","hep-th"],"license":"","primary_cat":"gr-qc","submitted_at":"2006-02-22T20:22:34Z","title_canon_sha256":"5dc4e24ec9b216404dbc4bbf435f24505fe8453a5cf2f30e2947f65226f0b3f4"},"schema_version":"1.0","source":{"id":"gr-qc/0602086","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0602086","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0602086v2","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0602086","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_12","alias_value":"UY4XFCL2Z4SY","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_16","alias_value":"UY4XFCL2Z4SYAB2F","created_at":"2026-07-04T15:19:44Z"},{"alias_kind":"pith_short_8","alias_value":"UY4XFCL2","created_at":"2026-07-04T15:19:44Z"}],"graph_snapshots":[{"event_id":"sha256:29edbe645156669a4e300523c1b94d64fdba38412c2af55dd9c99ccf7d1cc7c7","target":"graph","created_at":"2026-07-04T15:19:44Z","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/gr-qc/0602086/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Some long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum cosmology are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the","authors_text":"Abhay Ashtekar, Parampreet Singh, Tomasz Pawlowski","cross_cats":["astro-ph","hep-th"],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2006-02-22T20:22:34Z","title":"Quantum Nature of the Big Bang"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0602086","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":"sha256:97ea340604bf945646f6eccce968f6731ac8567101426fcd8439e9eb32dc7386","target":"record","created_at":"2026-07-04T15:19:44Z","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":"34d45d5bb787a044df11f9acc059282bc65a30dc53af109e6db4604f2f6cc234","cross_cats_sorted":["astro-ph","hep-th"],"license":"","primary_cat":"gr-qc","submitted_at":"2006-02-22T20:22:34Z","title_canon_sha256":"5dc4e24ec9b216404dbc4bbf435f24505fe8453a5cf2f30e2947f65226f0b3f4"},"schema_version":"1.0","source":{"id":"gr-qc/0602086","kind":"arxiv","version":2}},"canonical_sha256":"a63972897acf258007450a0b779139227e130a127752a2c033f9f5f53245c820","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a63972897acf258007450a0b779139227e130a127752a2c033f9f5f53245c820","first_computed_at":"2026-07-04T15:19:44.680481Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:19:44.680481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4259bbU9jkIB+MhEv7cIIf0hZ9pI0EihRR62su2F/z701U3SPro31bEiSMltZT7me0Ftwn6O4iIHtxWMWLqTCg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:19:44.680921Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/0602086","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97ea340604bf945646f6eccce968f6731ac8567101426fcd8439e9eb32dc7386","sha256:29edbe645156669a4e300523c1b94d64fdba38412c2af55dd9c99ccf7d1cc7c7"],"state_sha256":"2bda93a83a6b679ebcc26af9c2683e764c07be999fefd694f331b1c3fbb148c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vZVe517Q8KLJ2FA+aaehyHA/K2ZxN69Guw7JKqj3x3R9wQiB5ARCG6UvqH49EkEu09hc29d//n5Jklt/gsw2Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T17:03:00.743679Z","bundle_sha256":"4e3c416a11f9d53843a49d31a18d4250fbf6141ea915388919607155199750f1"}}