{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:TN323PN6BWTLB6RN7B3OXALTVQ","short_pith_number":"pith:TN323PN6","canonical_record":{"source":{"id":"2508.15373","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-08-21T09:08:42Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"d578e5df03e089ecf038600d22df8a43929c9d2bde7114864d14589f890ef205","abstract_canon_sha256":"19048c286aa1408ae4f31f89783031471d0b070cdc0a8a748e6ee25fe8330915"},"schema_version":"1.0"},"canonical_sha256":"9b77adbdbe0da6b0fa2df876eb8173ac34a3ef9624fc5d4578eddea1979cbbfe","source":{"kind":"arxiv","id":"2508.15373","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15373","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15373v1","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15373","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"TN323PN6BWTL","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"TN323PN6BWTLB6RN","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"TN323PN6","created_at":"2026-05-20T01:04:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:TN323PN6BWTLB6RN7B3OXALTVQ","target":"record","payload":{"canonical_record":{"source":{"id":"2508.15373","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-08-21T09:08:42Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"d578e5df03e089ecf038600d22df8a43929c9d2bde7114864d14589f890ef205","abstract_canon_sha256":"19048c286aa1408ae4f31f89783031471d0b070cdc0a8a748e6ee25fe8330915"},"schema_version":"1.0"},"canonical_sha256":"9b77adbdbe0da6b0fa2df876eb8173ac34a3ef9624fc5d4578eddea1979cbbfe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T01:04:56.794365Z","signature_b64":"AzkwghSjVOtc1UtLFDIM0BQtD0sCmNz8jLeCIqlggXmCGN+xTpAYJbf/ivy1Oh/sv/X9pBLP7hs0wxEBCpcvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b77adbdbe0da6b0fa2df876eb8173ac34a3ef9624fc5d4578eddea1979cbbfe","last_reissued_at":"2026-05-20T01:04:56.793615Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T01:04:56.793615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.15373","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":"2026-05-20T01:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3lnpm1mBQA2w7ZTge0cPvcvuSd7vX+xwCVn2dOH2m+8Bb7eGuypEY/rTG6m68dE0hH9yJjIIv10eP30SLd4kCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:41:10.789450Z"},"content_sha256":"ecf6ea92ef39b3271858b17f9117a46c61ccb657e8c87213a68568ac997138ed","schema_version":"1.0","event_id":"sha256:ecf6ea92ef39b3271858b17f9117a46c61ccb657e8c87213a68568ac997138ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:TN323PN6BWTLB6RN7B3OXALTVQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Husain-Kucha\\v{r} model as the Carrollian limit of the Holst term","license":"http://creativecommons.org/licenses/by/4.0/","headline":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections.","cross_cats":["hep-th","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Aitor Vicente-Cano, Eduardo J.S. Villase\\~nor, J. Fernando Barbero G., Juan Margalef-Bentabol","submitted_at":"2025-08-21T09:08:42Z","abstract_excerpt":"We show how the Husain-Kucha\\v{r} model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections. We also discuss the footprint of the Carrollian symmetry in the Hamiltonian formulation of the Husain-Kucha\\v{r} action."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We show how the Husain-Kuchař model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Carrollian limit is well-defined for the Holst term in the coframe and spin connection formulation such that it exactly reproduces the Husain-Kuchař model without requiring extra field constraints or modifications (abstract statement of the limit procedure).","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Husain-Kuchař model is obtained as the Carrollian limit of the Holst term in coframe-spin connection theories, with Carrollian symmetry analyzed in the Hamiltonian formulation.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"0ebcb2f96e354fcf94f04075ecc3d11ff812847a33554b820f9705fd0b0f450c"},"source":{"id":"2508.15373","kind":"arxiv","version":1},"verdict":{"id":"dc5a5f49-d304-4323-8395-7c8bd808ee33","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-18T22:16:39.979482Z","strongest_claim":"We show how the Husain-Kuchař model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections.","one_line_summary":"Husain-Kuchař model is obtained as the Carrollian limit of the Holst term in coframe-spin connection theories, with Carrollian symmetry analyzed in the Hamiltonian formulation.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Carrollian limit is well-defined for the Holst term in the coframe and spin connection formulation such that it exactly reproduces the Husain-Kuchař model without requiring extra field constraints or modifications (abstract statement of the limit procedure).","pith_extraction_headline":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.15373/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":21,"sample":[{"doi":"","year":1968,"title":"H. Bacry and J. Levy-Leblond, Possible kinematics, J. Math. Phys. 9 (1968) 1605","work_id":"194d4d3f-cb61-4d47-93f7-e6b1bab99a67","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1965,"title":"L´ evy-Leblond,Une nouvelle limite non-relativiste du groupe de Poincar´ e, Annales de l’I.H.P","work_id":"ed95fd6e-0768-4b22-bc5d-35356fc9f3d5","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1966,"title":"N. D. Sen Gupta, On an analogue of the Galilei group , Nuovo Cim. A 44 (1966) 512","work_id":"236d4b36-6c73-4b4c-842d-b054eef3c2cd","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2014,"title":"C. Duval, G. W. Gibbons, and P.A. Horvathy, Conformal Carroll groups and BMS symmetry, Class. Quant. Grav. 31 (2014) 092001","work_id":"3cee22bc-04ac-466d-87af-ca2f1c67af48","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2014,"title":"C. Duval, G. W. Gibbons, P. A. Horvathy, and P. M. Zhang, Carroll versus Newton and Galilei: two dual non-Einsteinian concepts of time , Class. Quant. Grav. 31 (2014) 085016","work_id":"5ca274ac-c322-47c1-8047-e3d37688a319","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":21,"snapshot_sha256":"d16bf7b41e49aaec0f656ac53b6b8581c395787883329ea44ce4863194d17b6c","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":"dc5a5f49-d304-4323-8395-7c8bd808ee33"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T01:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DHxZ/I2aVh4BmeJfvwfy5S2dEzwzbNHdBhaOqMCN35wY5EXLNDUnjDeulF5AfQwKK/orE+9pJHtcqpkx6RcwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:41:10.790294Z"},"content_sha256":"e4d39939d47c08e88d4b9e7dbb48b2096f65d354149ef3a541500ce49558462a","schema_version":"1.0","event_id":"sha256:e4d39939d47c08e88d4b9e7dbb48b2096f65d354149ef3a541500ce49558462a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TN323PN6BWTLB6RN7B3OXALTVQ/bundle.json","state_url":"https://pith.science/pith/TN323PN6BWTLB6RN7B3OXALTVQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TN323PN6BWTLB6RN7B3OXALTVQ/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":"2026-05-21T12:41:10Z","links":{"resolver":"https://pith.science/pith/TN323PN6BWTLB6RN7B3OXALTVQ","bundle":"https://pith.science/pith/TN323PN6BWTLB6RN7B3OXALTVQ/bundle.json","state":"https://pith.science/pith/TN323PN6BWTLB6RN7B3OXALTVQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TN323PN6BWTLB6RN7B3OXALTVQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:TN323PN6BWTLB6RN7B3OXALTVQ","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":"19048c286aa1408ae4f31f89783031471d0b070cdc0a8a748e6ee25fe8330915","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-08-21T09:08:42Z","title_canon_sha256":"d578e5df03e089ecf038600d22df8a43929c9d2bde7114864d14589f890ef205"},"schema_version":"1.0","source":{"id":"2508.15373","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15373","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15373v1","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15373","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"TN323PN6BWTL","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"TN323PN6BWTLB6RN","created_at":"2026-05-20T01:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"TN323PN6","created_at":"2026-05-20T01:04:56Z"}],"graph_snapshots":[{"event_id":"sha256:e4d39939d47c08e88d4b9e7dbb48b2096f65d354149ef3a541500ce49558462a","target":"graph","created_at":"2026-05-20T01:04:56Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"We show how the Husain-Kuchař model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The Carrollian limit is well-defined for the Holst term in the coframe and spin connection formulation such that it exactly reproduces the Husain-Kuchař model without requiring extra field constraints or modifications (abstract statement of the limit procedure)."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Husain-Kuchař model is obtained as the Carrollian limit of the Holst term in coframe-spin connection theories, with Carrollian symmetry analyzed in the Hamiltonian formulation."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections."}],"snapshot_sha256":"0ebcb2f96e354fcf94f04075ecc3d11ff812847a33554b820f9705fd0b0f450c"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2508.15373/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show how the Husain-Kucha\\v{r} model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections. We also discuss the footprint of the Carrollian symmetry in the Hamiltonian formulation of the Husain-Kucha\\v{r} action.","authors_text":"Aitor Vicente-Cano, Eduardo J.S. Villase\\~nor, J. Fernando Barbero G., Juan Margalef-Bentabol","cross_cats":["hep-th","math-ph","math.MP"],"headline":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-08-21T09:08:42Z","title":"Husain-Kucha\\v{r} model as the Carrollian limit of the Holst term"},"references":{"count":21,"internal_anchors":0,"resolved_work":21,"sample":[{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":1,"title":"H. Bacry and J. Levy-Leblond, Possible kinematics, J. Math. Phys. 9 (1968) 1605","work_id":"194d4d3f-cb61-4d47-93f7-e6b1bab99a67","year":1968},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":2,"title":"L´ evy-Leblond,Une nouvelle limite non-relativiste du groupe de Poincar´ e, Annales de l’I.H.P","work_id":"ed95fd6e-0768-4b22-bc5d-35356fc9f3d5","year":1965},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"N. D. Sen Gupta, On an analogue of the Galilei group , Nuovo Cim. A 44 (1966) 512","work_id":"236d4b36-6c73-4b4c-842d-b054eef3c2cd","year":1966},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":4,"title":"C. Duval, G. W. Gibbons, and P.A. Horvathy, Conformal Carroll groups and BMS symmetry, Class. Quant. Grav. 31 (2014) 092001","work_id":"3cee22bc-04ac-466d-87af-ca2f1c67af48","year":2014},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":5,"title":"C. Duval, G. W. Gibbons, P. A. Horvathy, and P. M. Zhang, Carroll versus Newton and Galilei: two dual non-Einsteinian concepts of time , Class. Quant. Grav. 31 (2014) 085016","work_id":"5ca274ac-c322-47c1-8047-e3d37688a319","year":2014}],"snapshot_sha256":"d16bf7b41e49aaec0f656ac53b6b8581c395787883329ea44ce4863194d17b6c"},"source":{"id":"2508.15373","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-18T22:16:39.979482Z","id":"dc5a5f49-d304-4323-8395-7c8bd808ee33","model_set":{"reader":"grok-4.3"},"one_line_summary":"Husain-Kuchař model is obtained as the Carrollian limit of the Holst term in coframe-spin connection theories, with Carrollian symmetry analyzed in the Hamiltonian formulation.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"The Husain-Kuchař model arises as the Carrollian limit of the Holst term when gravity is formulated with coframes and spin connections.","strongest_claim":"We show how the Husain-Kuchař model can be understood as a Carrollian limit of the Holst term in the context of background-independent field theories described in terms of coframes and spin connections.","weakest_assumption":"The Carrollian limit is well-defined for the Holst term in the coframe and spin connection formulation such that it exactly reproduces the Husain-Kuchař model without requiring extra field constraints or modifications (abstract statement of the limit procedure)."}},"verdict_id":"dc5a5f49-d304-4323-8395-7c8bd808ee33"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:ecf6ea92ef39b3271858b17f9117a46c61ccb657e8c87213a68568ac997138ed","target":"record","created_at":"2026-05-20T01:04:56Z","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":"19048c286aa1408ae4f31f89783031471d0b070cdc0a8a748e6ee25fe8330915","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-08-21T09:08:42Z","title_canon_sha256":"d578e5df03e089ecf038600d22df8a43929c9d2bde7114864d14589f890ef205"},"schema_version":"1.0","source":{"id":"2508.15373","kind":"arxiv","version":1}},"canonical_sha256":"9b77adbdbe0da6b0fa2df876eb8173ac34a3ef9624fc5d4578eddea1979cbbfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b77adbdbe0da6b0fa2df876eb8173ac34a3ef9624fc5d4578eddea1979cbbfe","first_computed_at":"2026-05-20T01:04:56.793615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T01:04:56.793615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AzkwghSjVOtc1UtLFDIM0BQtD0sCmNz8jLeCIqlggXmCGN+xTpAYJbf/ivy1Oh/sv/X9pBLP7hs0wxEBCpcvBw==","signature_status":"signed_v1","signed_at":"2026-05-20T01:04:56.794365Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.15373","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecf6ea92ef39b3271858b17f9117a46c61ccb657e8c87213a68568ac997138ed","sha256:e4d39939d47c08e88d4b9e7dbb48b2096f65d354149ef3a541500ce49558462a"],"state_sha256":"e65190c99c18b97bff7c45ca3fa4037424f820da3e5179f9c5d13bf80e0b58b1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWlSNKH4HCRDqEgb7zoOfhtycs023iLGox75bhml9kjo7h9tlMIN9uX7gcUhOJ1QTCqrOxYR/SXS3cQ3ClyCCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T12:41:10.793426Z","bundle_sha256":"2ab53b5f4abdfcc52a5f4e93b4e61cd920ad685812848ff36895a2c03eed2e8b"}}