{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:4TNFFO353UOJK5X5YSN7NEBQWC","short_pith_number":"pith:4TNFFO35","canonical_record":{"source":{"id":"gr-qc/0404018","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2004-04-05T13:34:11Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"16a57dd7234570632f62630b129b81de8208728bf73ba91b608e77c2008cc970","abstract_canon_sha256":"ffd6f516728a239448de65513934c4815447982d9058397f6077fd25a01a9f28"},"schema_version":"1.0"},"canonical_sha256":"e4da52bb7ddd1c9576fdc49bf69030b0917093d25ff347586b9d02883806dd71","source":{"kind":"arxiv","id":"gr-qc/0404018","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0404018","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0404018v2","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0404018","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_12","alias_value":"4TNFFO353UOJ","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_16","alias_value":"4TNFFO353UOJK5X5","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_8","alias_value":"4TNFFO35","created_at":"2026-07-04T15:23:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:4TNFFO353UOJK5X5YSN7NEBQWC","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/0404018","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2004-04-05T13:34:11Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"16a57dd7234570632f62630b129b81de8208728bf73ba91b608e77c2008cc970","abstract_canon_sha256":"ffd6f516728a239448de65513934c4815447982d9058397f6077fd25a01a9f28"},"schema_version":"1.0"},"canonical_sha256":"e4da52bb7ddd1c9576fdc49bf69030b0917093d25ff347586b9d02883806dd71","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:23:03.934272Z","signature_b64":"zWdRLhnlw5s2rmE21xzey0qyaurWx2M2Dwjq1a1t0NxsJjZc5p1S7Z/9onidcAAcQd2Ug7kKjVUyOm/auuiCBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4da52bb7ddd1c9576fdc49bf69030b0917093d25ff347586b9d02883806dd71","last_reissued_at":"2026-07-04T15:23:03.933939Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:23:03.933939Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/0404018","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":"2026-07-04T15:23:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pHssdc/73ktzaZsoTIP1tWwZmwuQvBvtX4GEnTUg5x4YOLOVkckIkjOjTL3kBjHsNV8j22koPqYEZdbyFgMtCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:29:12.262756Z"},"content_sha256":"7b4d16646f1682a8f695683e9d225d4a984b72cfcd568fbe361a0d91b9ec468e","schema_version":"1.0","event_id":"sha256:7b4d16646f1682a8f695683e9d225d4a984b72cfcd568fbe361a0d91b9ec468e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:4TNFFO353UOJK5X5YSN7NEBQWC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Background Independent Quantum Gravity: A Status Report","license":"","headline":"","cross_cats":["hep-th","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Abhay Ashtekar, Jerzy lewandowski","submitted_at":"2004-04-05T13:34:11Z","abstract_excerpt":"The goal of this article is to present an introduction to loop quantum gravity -a background independent, non-perturbative approach to the problem of unification of general relativity and quantum physics, based on a quantum theory of geometry. Our presentation is pedagogical. Thus, in addition to providing a bird's eye view of the present status of the subject, the article should also serve as a vehicle to enter the field and explore it in detail. To aid non-experts, very little is assumed beyond elements of general relativity, gauge theories and quantum field theory. While the article is esse"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0404018","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/0404018/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":"2026-07-04T15:23:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yNjVC91Db5u9TpmNpgp1NzzsO4gc2OOf5zvBS5tKDRWuB5LdV3CBczeGYUr2uElTqU0AAzsd8vh6jzu9tjaBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:29:12.263674Z"},"content_sha256":"54bf5bc22e046b731c4f9047281ff5ea1d940853c254647a0d41f358a8c6e4a8","schema_version":"1.0","event_id":"sha256:54bf5bc22e046b731c4f9047281ff5ea1d940853c254647a0d41f358a8c6e4a8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TNFFO353UOJK5X5YSN7NEBQWC/bundle.json","state_url":"https://pith.science/pith/4TNFFO353UOJK5X5YSN7NEBQWC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TNFFO353UOJK5X5YSN7NEBQWC/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":"2026-08-05T02:29:12Z","links":{"resolver":"https://pith.science/pith/4TNFFO353UOJK5X5YSN7NEBQWC","bundle":"https://pith.science/pith/4TNFFO353UOJK5X5YSN7NEBQWC/bundle.json","state":"https://pith.science/pith/4TNFFO353UOJK5X5YSN7NEBQWC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TNFFO353UOJK5X5YSN7NEBQWC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:4TNFFO353UOJK5X5YSN7NEBQWC","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":"ffd6f516728a239448de65513934c4815447982d9058397f6077fd25a01a9f28","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"","primary_cat":"gr-qc","submitted_at":"2004-04-05T13:34:11Z","title_canon_sha256":"16a57dd7234570632f62630b129b81de8208728bf73ba91b608e77c2008cc970"},"schema_version":"1.0","source":{"id":"gr-qc/0404018","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0404018","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0404018v2","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0404018","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_12","alias_value":"4TNFFO353UOJ","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_16","alias_value":"4TNFFO353UOJK5X5","created_at":"2026-07-04T15:23:03Z"},{"alias_kind":"pith_short_8","alias_value":"4TNFFO35","created_at":"2026-07-04T15:23:03Z"}],"graph_snapshots":[{"event_id":"sha256:54bf5bc22e046b731c4f9047281ff5ea1d940853c254647a0d41f358a8c6e4a8","target":"graph","created_at":"2026-07-04T15:23:03Z","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/0404018/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The goal of this article is to present an introduction to loop quantum gravity -a background independent, non-perturbative approach to the problem of unification of general relativity and quantum physics, based on a quantum theory of geometry. Our presentation is pedagogical. Thus, in addition to providing a bird's eye view of the present status of the subject, the article should also serve as a vehicle to enter the field and explore it in detail. To aid non-experts, very little is assumed beyond elements of general relativity, gauge theories and quantum field theory. While the article is esse","authors_text":"Abhay Ashtekar, Jerzy lewandowski","cross_cats":["hep-th","math-ph","math.MP"],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2004-04-05T13:34:11Z","title":"Background Independent Quantum Gravity: A Status Report"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0404018","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":"sha256:7b4d16646f1682a8f695683e9d225d4a984b72cfcd568fbe361a0d91b9ec468e","target":"record","created_at":"2026-07-04T15:23:03Z","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":"ffd6f516728a239448de65513934c4815447982d9058397f6077fd25a01a9f28","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"","primary_cat":"gr-qc","submitted_at":"2004-04-05T13:34:11Z","title_canon_sha256":"16a57dd7234570632f62630b129b81de8208728bf73ba91b608e77c2008cc970"},"schema_version":"1.0","source":{"id":"gr-qc/0404018","kind":"arxiv","version":2}},"canonical_sha256":"e4da52bb7ddd1c9576fdc49bf69030b0917093d25ff347586b9d02883806dd71","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4da52bb7ddd1c9576fdc49bf69030b0917093d25ff347586b9d02883806dd71","first_computed_at":"2026-07-04T15:23:03.933939Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:03.933939Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zWdRLhnlw5s2rmE21xzey0qyaurWx2M2Dwjq1a1t0NxsJjZc5p1S7Z/9onidcAAcQd2Ug7kKjVUyOm/auuiCBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:03.934272Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/0404018","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b4d16646f1682a8f695683e9d225d4a984b72cfcd568fbe361a0d91b9ec468e","sha256:54bf5bc22e046b731c4f9047281ff5ea1d940853c254647a0d41f358a8c6e4a8"],"state_sha256":"200fa2f4fa1014ee075ded57276eeb8c3e08934f10216027e3d2fc75368f8046"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cbVRUDXN7l7UT8XrGa/8V82CKkWn3kWHm748VArpa9o1/Ku7qcfq9bgr5qslW9B25f+St2KAfG1pjZz751NDCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T02:29:12.267218Z","bundle_sha256":"2760586dce5dd04248fe2392d6e4082138f19bcd7da292b0e47ad56f54d2f19e"}}