{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QUBLXOJHT6HHSAHSVFD6ELWCAQ","short_pith_number":"pith:QUBLXOJH","canonical_record":{"source":{"id":"2211.17101","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2022-11-18T08:32:34Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"title_canon_sha256":"55fedae9428b5862f3904e3938b1f50f48bccb74d2e29fef42bac0291ffda16f","abstract_canon_sha256":"37f31b296da0089c53a5d260e2349931ad12632f826d9af1ccaf9d078b72b5ed"},"schema_version":"1.0"},"canonical_sha256":"8502bbb9279f8e7900f2a947e22ec20438e932a9081796a3e3d2c101f4ff2f1b","source":{"kind":"arxiv","id":"2211.17101","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.17101","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"arxiv_version","alias_value":"2211.17101v1","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.17101","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_12","alias_value":"QUBLXOJHT6HH","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_16","alias_value":"QUBLXOJHT6HHSAHS","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_8","alias_value":"QUBLXOJH","created_at":"2026-07-05T05:21:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QUBLXOJHT6HHSAHSVFD6ELWCAQ","target":"record","payload":{"canonical_record":{"source":{"id":"2211.17101","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2022-11-18T08:32:34Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"title_canon_sha256":"55fedae9428b5862f3904e3938b1f50f48bccb74d2e29fef42bac0291ffda16f","abstract_canon_sha256":"37f31b296da0089c53a5d260e2349931ad12632f826d9af1ccaf9d078b72b5ed"},"schema_version":"1.0"},"canonical_sha256":"8502bbb9279f8e7900f2a947e22ec20438e932a9081796a3e3d2c101f4ff2f1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:21:14.923427Z","signature_b64":"QcqkkFURCQcHFB1gVZ3iLbMaHADon849c89wabm82BJqIifdlmmjufUI67ahmsw0dPPTpu3/He18mzixbrOADw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8502bbb9279f8e7900f2a947e22ec20438e932a9081796a3e3d2c101f4ff2f1b","last_reissued_at":"2026-07-05T05:21:14.923073Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:21:14.923073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.17101","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:21:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ph7EM3sKwi2SvmEGWC3gyGWaOy7VfwfGs7I19k/hC+Zxz9i7gJ2+ICPIStFIQeVUozlJz7CWSYn9/Pw3XOBADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T17:30:21.830271Z"},"content_sha256":"dcbc055aadc0fa1094246acb04aa4f86606445b9d31a730b243c5c88838fb74d","schema_version":"1.0","event_id":"sha256:dcbc055aadc0fa1094246acb04aa4f86606445b9d31a730b243c5c88838fb74d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QUBLXOJHT6HHSAHSVFD6ELWCAQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Centenary of Alexander Friedmann's Prediction of the Universe Expansion and the Quantum Vacuum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"primary_cat":"physics.pop-ph","authors_text":"Galina L. Klimchitskaya, Vladimir M. Mostepanenko","submitted_at":"2022-11-18T08:32:34Z","abstract_excerpt":"We review the main scientific pictures of the universe developed from ancient times to Albert Einstein and underline that all of them treated the universe as a stationary system with unchanged physical properties. In contrast to this, 100 years ago Alexander Friedmann predicted that the universe expands starting from the point of infinitely large energy density. We briefly discuss the physical meaning of this prediction and its experimental confirmation consisting of the discovery of redshift in the spectra of remote galaxies and relic radiation. After mentioning the horizon problem in the the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.17101","kind":"arxiv","version":1},"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/2211.17101/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":"2026-07-05T05:21:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ljttwa/VvW6BhVeJ8FYCsSrRfJqlaLp1KYQGGdtmg/IxPn6kkqyAY8osK+ZlE8QgwJz46+dDB1FdbXLMaq7EAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T17:30:21.830792Z"},"content_sha256":"8832fbad5dd21d513a7820010d78609c410cdfb141983db9493ac9daf692a94c","schema_version":"1.0","event_id":"sha256:8832fbad5dd21d513a7820010d78609c410cdfb141983db9493ac9daf692a94c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/bundle.json","state_url":"https://pith.science/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/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":"2026-08-15T17:30:21Z","links":{"resolver":"https://pith.science/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ","bundle":"https://pith.science/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/bundle.json","state":"https://pith.science/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QUBLXOJHT6HHSAHSVFD6ELWCAQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QUBLXOJHT6HHSAHSVFD6ELWCAQ","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":"37f31b296da0089c53a5d260e2349931ad12632f826d9af1ccaf9d078b72b5ed","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2022-11-18T08:32:34Z","title_canon_sha256":"55fedae9428b5862f3904e3938b1f50f48bccb74d2e29fef42bac0291ffda16f"},"schema_version":"1.0","source":{"id":"2211.17101","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.17101","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"arxiv_version","alias_value":"2211.17101v1","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.17101","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_12","alias_value":"QUBLXOJHT6HH","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_16","alias_value":"QUBLXOJHT6HHSAHS","created_at":"2026-07-05T05:21:14Z"},{"alias_kind":"pith_short_8","alias_value":"QUBLXOJH","created_at":"2026-07-05T05:21:14Z"}],"graph_snapshots":[{"event_id":"sha256:8832fbad5dd21d513a7820010d78609c410cdfb141983db9493ac9daf692a94c","target":"graph","created_at":"2026-07-05T05:21:14Z","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/2211.17101/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We review the main scientific pictures of the universe developed from ancient times to Albert Einstein and underline that all of them treated the universe as a stationary system with unchanged physical properties. In contrast to this, 100 years ago Alexander Friedmann predicted that the universe expands starting from the point of infinitely large energy density. We briefly discuss the physical meaning of this prediction and its experimental confirmation consisting of the discovery of redshift in the spectra of remote galaxies and relic radiation. After mentioning the horizon problem in the the","authors_text":"Galina L. Klimchitskaya, Vladimir M. Mostepanenko","cross_cats":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2022-11-18T08:32:34Z","title":"Centenary of Alexander Friedmann's Prediction of the Universe Expansion and the Quantum Vacuum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.17101","kind":"arxiv","version":1},"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:dcbc055aadc0fa1094246acb04aa4f86606445b9d31a730b243c5c88838fb74d","target":"record","created_at":"2026-07-05T05:21:14Z","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":"37f31b296da0089c53a5d260e2349931ad12632f826d9af1ccaf9d078b72b5ed","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th","physics.hist-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2022-11-18T08:32:34Z","title_canon_sha256":"55fedae9428b5862f3904e3938b1f50f48bccb74d2e29fef42bac0291ffda16f"},"schema_version":"1.0","source":{"id":"2211.17101","kind":"arxiv","version":1}},"canonical_sha256":"8502bbb9279f8e7900f2a947e22ec20438e932a9081796a3e3d2c101f4ff2f1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8502bbb9279f8e7900f2a947e22ec20438e932a9081796a3e3d2c101f4ff2f1b","first_computed_at":"2026-07-05T05:21:14.923073Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:21:14.923073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QcqkkFURCQcHFB1gVZ3iLbMaHADon849c89wabm82BJqIifdlmmjufUI67ahmsw0dPPTpu3/He18mzixbrOADw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:21:14.923427Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.17101","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcbc055aadc0fa1094246acb04aa4f86606445b9d31a730b243c5c88838fb74d","sha256:8832fbad5dd21d513a7820010d78609c410cdfb141983db9493ac9daf692a94c"],"state_sha256":"f39166be212ab34e7c07c69c492318616b18dd28a56f1b4fdaeea5631e964130"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ahjnaz6XQe4AnfoYUUIpUc/p8UGrd4jGd8Pct9wRWL+X8Jf7a724YQbRH5uo7kG777j8EPzey3hIOebn3WVEBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T17:30:21.835911Z","bundle_sha256":"039db5d6f0b0a920453fe078815379bdc0ab3ac3a92d8b39a068aed2461bdc81"}}