{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:B4QBBIAXMQUGUKJ7QN2XODPHQS","short_pith_number":"pith:B4QBBIAX","canonical_record":{"source":{"id":"2011.12608","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-25T09:36:07Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"03ad215b87a4cb34e2cdc546f4c5ee15dab05f31049cfe9748ebd7a9ee353be2","abstract_canon_sha256":"b6d4848afb8a57689be46c05f3a4d422193842fd70b48ee84a1be13a1dad5ac9"},"schema_version":"1.0"},"canonical_sha256":"0f2010a01764286a293f8375770de784a7b2fc2def95c5c5249a4cfaad634b75","source":{"kind":"arxiv","id":"2011.12608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12608","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12608v1","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12608","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_12","alias_value":"B4QBBIAXMQUG","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_16","alias_value":"B4QBBIAXMQUGUKJ7","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_8","alias_value":"B4QBBIAX","created_at":"2026-07-05T02:08:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:B4QBBIAXMQUGUKJ7QN2XODPHQS","target":"record","payload":{"canonical_record":{"source":{"id":"2011.12608","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-25T09:36:07Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"03ad215b87a4cb34e2cdc546f4c5ee15dab05f31049cfe9748ebd7a9ee353be2","abstract_canon_sha256":"b6d4848afb8a57689be46c05f3a4d422193842fd70b48ee84a1be13a1dad5ac9"},"schema_version":"1.0"},"canonical_sha256":"0f2010a01764286a293f8375770de784a7b2fc2def95c5c5249a4cfaad634b75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:08:40.570400Z","signature_b64":"LRgDLXc2qWB2rqLg1oNn6vc1JczLEnj1XOiqGABGLb2fx+huHZqPczp5bEOsS5iAjCo6fWDSO5exsoztEIRWDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f2010a01764286a293f8375770de784a7b2fc2def95c5c5249a4cfaad634b75","last_reissued_at":"2026-07-05T02:08:40.570027Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:08:40.570027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.12608","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":"2026-07-05T02:08:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hmPFVsqXIpshy+VBuJOQZlbF+YYpExA9rWSRHk+dKvlGrgCAuoYCEAkyE9u0XscVXrhQ1oRFo9m4J5k0qryCCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:17:45.845480Z"},"content_sha256":"5ca471ba75e86d9279213651fdc9342ec8774fbb288fc00d9fceadf5eac0be6c","schema_version":"1.0","event_id":"sha256:5ca471ba75e86d9279213651fdc9342ec8774fbb288fc00d9fceadf5eac0be6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:B4QBBIAXMQUGUKJ7QN2XODPHQS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology and the massive photon frequency shift in the Standard-Model Extension","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Alessandro D.A.M. Spallicci, Jos\\'e A. Helay\\\"el-Neto, Martin L\\'opez-Corredoira, Salvatore Capozziello","submitted_at":"2020-11-25T09:36:07Z","abstract_excerpt":"The total red shift $z$ might be recast as a combination of the expansion red shift and a static shift due to the energy-momentum tensor non-conservation of a photon propagating through Electro-Magnetic (EM) fields. If massive, the photon may be described by the de Broglie-Proca (dBP) theory which satisfies the Lorentz(-Poincar\\'e) Symmetry (LoSy) but not gauge-invariance. The latter is regained in the Standard-Model Extension (SME), associated with LoSy Violation (LSV) that naturally dresses photons of a mass. The non-conservation stems from the vacuum expectation value of the vector and tens"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12608","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/2011.12608/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":"2026-07-05T02:08:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5TtZlxfx5y+9hRCax7L3pkQcx8hL98QAW/sPe0IXvliDe0MIJVuHPBmWTYje/FpsTRZEke9hy+UoNfWyDhv8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:17:45.846072Z"},"content_sha256":"ee03651fc08fccb1df50149fb803ad459210bbf2b36496983f46b0c727e9c7e5","schema_version":"1.0","event_id":"sha256:ee03651fc08fccb1df50149fb803ad459210bbf2b36496983f46b0c727e9c7e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/bundle.json","state_url":"https://pith.science/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/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":"2026-08-05T07:17:45Z","links":{"resolver":"https://pith.science/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS","bundle":"https://pith.science/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/bundle.json","state":"https://pith.science/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B4QBBIAXMQUGUKJ7QN2XODPHQS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:B4QBBIAXMQUGUKJ7QN2XODPHQS","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":"b6d4848afb8a57689be46c05f3a4d422193842fd70b48ee84a1be13a1dad5ac9","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-25T09:36:07Z","title_canon_sha256":"03ad215b87a4cb34e2cdc546f4c5ee15dab05f31049cfe9748ebd7a9ee353be2"},"schema_version":"1.0","source":{"id":"2011.12608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12608","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12608v1","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12608","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_12","alias_value":"B4QBBIAXMQUG","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_16","alias_value":"B4QBBIAXMQUGUKJ7","created_at":"2026-07-05T02:08:40Z"},{"alias_kind":"pith_short_8","alias_value":"B4QBBIAX","created_at":"2026-07-05T02:08:40Z"}],"graph_snapshots":[{"event_id":"sha256:ee03651fc08fccb1df50149fb803ad459210bbf2b36496983f46b0c727e9c7e5","target":"graph","created_at":"2026-07-05T02:08:40Z","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/2011.12608/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The total red shift $z$ might be recast as a combination of the expansion red shift and a static shift due to the energy-momentum tensor non-conservation of a photon propagating through Electro-Magnetic (EM) fields. If massive, the photon may be described by the de Broglie-Proca (dBP) theory which satisfies the Lorentz(-Poincar\\'e) Symmetry (LoSy) but not gauge-invariance. The latter is regained in the Standard-Model Extension (SME), associated with LoSy Violation (LSV) that naturally dresses photons of a mass. The non-conservation stems from the vacuum expectation value of the vector and tens","authors_text":"Alessandro D.A.M. Spallicci, Jos\\'e A. Helay\\\"el-Neto, Martin L\\'opez-Corredoira, Salvatore Capozziello","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-25T09:36:07Z","title":"Cosmology and the massive photon frequency shift in the Standard-Model Extension"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12608","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":"sha256:5ca471ba75e86d9279213651fdc9342ec8774fbb288fc00d9fceadf5eac0be6c","target":"record","created_at":"2026-07-05T02:08:40Z","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":"b6d4848afb8a57689be46c05f3a4d422193842fd70b48ee84a1be13a1dad5ac9","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-25T09:36:07Z","title_canon_sha256":"03ad215b87a4cb34e2cdc546f4c5ee15dab05f31049cfe9748ebd7a9ee353be2"},"schema_version":"1.0","source":{"id":"2011.12608","kind":"arxiv","version":1}},"canonical_sha256":"0f2010a01764286a293f8375770de784a7b2fc2def95c5c5249a4cfaad634b75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0f2010a01764286a293f8375770de784a7b2fc2def95c5c5249a4cfaad634b75","first_computed_at":"2026-07-05T02:08:40.570027Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:08:40.570027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LRgDLXc2qWB2rqLg1oNn6vc1JczLEnj1XOiqGABGLb2fx+huHZqPczp5bEOsS5iAjCo6fWDSO5exsoztEIRWDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:08:40.570400Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.12608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ca471ba75e86d9279213651fdc9342ec8774fbb288fc00d9fceadf5eac0be6c","sha256:ee03651fc08fccb1df50149fb803ad459210bbf2b36496983f46b0c727e9c7e5"],"state_sha256":"721f73def01fc2374592ae9b4fe9ed99e7902031c4fa35b5fe5b7e09e52b7d32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rJBX09cRpVl+OgWXe8eEPJL6W9ZVmWg3Xzn39/hHvbiRfxh+DBFtqwq/M7w58h3cw4ojqbX6z70WXmJryIFZCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:17:45.852586Z","bundle_sha256":"7c8657b741bb5d0891ced9c06601f835a36afba5f0317b6fe771b4c851a592ed"}}