{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TUNK2NNUORX3BXXVXQ5UQYDMB2","short_pith_number":"pith:TUNK2NNU","canonical_record":{"source":{"id":"2604.06911","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.HC","submitted_at":"2026-04-08T10:11:07Z","cross_cats_sorted":[],"title_canon_sha256":"8916b345595d2bfc29d8df556908cabef5a483d0174ab21fb539ca6d13a53233","abstract_canon_sha256":"fb5ea44e43e850384f634e669b81e7d6895f938dd3deb821ee38c9961eb87382"},"schema_version":"1.0"},"canonical_sha256":"9d1aad35b4746fb0def5bc3b48606c0e8e168fb555f50de2c34c3ff8cd9cc3cb","source":{"kind":"arxiv","id":"2604.06911","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.06911","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"arxiv_version","alias_value":"2604.06911v1","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.06911","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_12","alias_value":"TUNK2NNUORX3","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_16","alias_value":"TUNK2NNUORX3BXXV","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_8","alias_value":"TUNK2NNU","created_at":"2026-05-27T01:05:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TUNK2NNUORX3BXXVXQ5UQYDMB2","target":"record","payload":{"canonical_record":{"source":{"id":"2604.06911","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.HC","submitted_at":"2026-04-08T10:11:07Z","cross_cats_sorted":[],"title_canon_sha256":"8916b345595d2bfc29d8df556908cabef5a483d0174ab21fb539ca6d13a53233","abstract_canon_sha256":"fb5ea44e43e850384f634e669b81e7d6895f938dd3deb821ee38c9961eb87382"},"schema_version":"1.0"},"canonical_sha256":"9d1aad35b4746fb0def5bc3b48606c0e8e168fb555f50de2c34c3ff8cd9cc3cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:05:53.940255Z","signature_b64":"jFAffmx6clRb7Tbm5u2F/S0GPNb2xqFStJCkmxMEVLoIFF+87IQ8sIbXlfUIMmvQmOxEB4eHdWC7Bb9PSh3oAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d1aad35b4746fb0def5bc3b48606c0e8e168fb555f50de2c34c3ff8cd9cc3cb","last_reissued_at":"2026-05-27T01:05:53.939207Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:05:53.939207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2604.06911","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":"2026-05-27T01:05:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/XxOBSYNpchNOJWm8vvTX6lfvWLixLz15xrDPB31VbrS/YHJZpIzGJhCJ/m6fXKvhvwdJKfcejzLfirot1meAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:20:59.371870Z"},"content_sha256":"f7d65f650a635cb89cd90fc793d6caf9e01c69a05495afa747490fdb95756467","schema_version":"1.0","event_id":"sha256:f7d65f650a635cb89cd90fc793d6caf9e01c69a05495afa747490fdb95756467"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TUNK2NNUORX3BXXVXQ5UQYDMB2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Physics-driven Sonification for Improving Multisensory Needle Guidance in Percutaneous Epicardial Access","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone.","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Alberto Redaelli, Alessandro Albanesi, Emiliano Votta, Gianluigi Buccoliero, Nassir Navab, Pasquale Vergara, Sasan Matinfar, Serena Dell'Aversana, Stefano Carugo, Veronica Ruozzi","submitted_at":"2026-04-08T10:11:07Z","abstract_excerpt":"Percutaneous epicardial access (PEA), performed on a beating heart under fluoroscopy, enables arrhythmia treatment. However, advancing a needle toward the thin and moving pericardium remains highly challenging and risky. To address this problem, we present a physics-driven sonification method for Extended Reality (XR)-based multisensory navigation to enhance user perception during the critical needle landing phase in PEA.\n  Dynamic cardiac anatomy from 4D CTA was reconstructed and registered to a real-world coordinate system. Real-time needle tracking provided the position of the needle tip re"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The multisensory method significantly improved navigation safety (χ² = 11.30, p < 0.01), reducing myocardial contact (3.64% vs. 7.27%) and increasing correct access (90.91% vs. 52.73%). Needle placement accuracy improved, with closer membrane proximity (Cliff delta = 0.19) and reduced variability (p < 0.05). NASA-TLX indicated lower cognitive load with multisensory guidance (p < 0.01).","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The phantom model and 4D CTA registration sufficiently replicate real clinical challenges of a moving heart under fluoroscopy, including tissue acoustics and needle-tissue interactions, so that observed improvements will translate to live patients.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Physics-driven sonification via a multilayer membrane model improves needle navigation safety, accuracy, and reduces cognitive load in a cardiologist phantom study for pericardial access.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"138dc48558987f3d1b8376f40223b41169cd1aa834f7ec98b4d03e3bfce3c42b"},"source":{"id":"2604.06911","kind":"arxiv","version":1},"verdict":{"id":"37cfd5a4-c88a-402b-8784-7c10b0ef355e","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T17:56:54.538185Z","strongest_claim":"The multisensory method significantly improved navigation safety (χ² = 11.30, p < 0.01), reducing myocardial contact (3.64% vs. 7.27%) and increasing correct access (90.91% vs. 52.73%). Needle placement accuracy improved, with closer membrane proximity (Cliff delta = 0.19) and reduced variability (p < 0.05). NASA-TLX indicated lower cognitive load with multisensory guidance (p < 0.01).","one_line_summary":"Physics-driven sonification via a multilayer membrane model improves needle navigation safety, accuracy, and reduces cognitive load in a cardiologist phantom study for pericardial access.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The phantom model and 4D CTA registration sufficiently replicate real clinical challenges of a moving heart under fluoroscopy, including tissue acoustics and needle-tissue interactions, so that observed improvements will translate to live patients.","pith_extraction_headline":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.06911/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":3,"sample":[{"doi":"","year":1985,"title":"Epicardial access complications during electrophysiology procedures.Journal of cardiovascu- lar electrophysiology, 32(7):1985–1994,","work_id":"6efc217a-793d-430f-98cd-c461c70215f2","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2044,"title":"Anatomy-aware computed tomography-to-ultrasound spine registration","work_id":"11b5cfb4-38d0-4017-a24d-bf4a3bd79eeb","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2003,"title":"2003: Opensound control: State of the art 2003.A NIME Reader: Fifteen Years of New Interfaces for Musical Expression, pages 125–145,","work_id":"bbddf302-6b70-42b5-9e83-1568d6d4fae4","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":3,"snapshot_sha256":"cfd451a68e9c157175812d6b78c8c849ee78cf03404dcf0a4ea0b6acedb0fe6f","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":"37cfd5a4-c88a-402b-8784-7c10b0ef355e"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-27T01:05:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0kxdaQQa+nv1pdppr22X87b5gM74UWCkxHRJldeuJCnwVXdVhSPHI+M5Xyrn8DTGrDMA3B3UJyIbpvMPq/aaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:20:59.372573Z"},"content_sha256":"252f53fdd4d5a0044312ea7b8c0caeb31e86e581624cc577a3ca378de436cbf3","schema_version":"1.0","event_id":"sha256:252f53fdd4d5a0044312ea7b8c0caeb31e86e581624cc577a3ca378de436cbf3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/bundle.json","state_url":"https://pith.science/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/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":"2026-05-30T12:20:59Z","links":{"resolver":"https://pith.science/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2","bundle":"https://pith.science/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/bundle.json","state":"https://pith.science/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TUNK2NNUORX3BXXVXQ5UQYDMB2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TUNK2NNUORX3BXXVXQ5UQYDMB2","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":"fb5ea44e43e850384f634e669b81e7d6895f938dd3deb821ee38c9961eb87382","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.HC","submitted_at":"2026-04-08T10:11:07Z","title_canon_sha256":"8916b345595d2bfc29d8df556908cabef5a483d0174ab21fb539ca6d13a53233"},"schema_version":"1.0","source":{"id":"2604.06911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.06911","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"arxiv_version","alias_value":"2604.06911v1","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.06911","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_12","alias_value":"TUNK2NNUORX3","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_16","alias_value":"TUNK2NNUORX3BXXV","created_at":"2026-05-27T01:05:53Z"},{"alias_kind":"pith_short_8","alias_value":"TUNK2NNU","created_at":"2026-05-27T01:05:53Z"}],"graph_snapshots":[{"event_id":"sha256:252f53fdd4d5a0044312ea7b8c0caeb31e86e581624cc577a3ca378de436cbf3","target":"graph","created_at":"2026-05-27T01:05:53Z","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":"The multisensory method significantly improved navigation safety (χ² = 11.30, p < 0.01), reducing myocardial contact (3.64% vs. 7.27%) and increasing correct access (90.91% vs. 52.73%). Needle placement accuracy improved, with closer membrane proximity (Cliff delta = 0.19) and reduced variability (p < 0.05). NASA-TLX indicated lower cognitive load with multisensory guidance (p < 0.01)."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The phantom model and 4D CTA registration sufficiently replicate real clinical challenges of a moving heart under fluoroscopy, including tissue acoustics and needle-tissue interactions, so that observed improvements will translate to live patients."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Physics-driven sonification via a multilayer membrane model improves needle navigation safety, accuracy, and reduces cognitive load in a cardiologist phantom study for pericardial access."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone."}],"snapshot_sha256":"138dc48558987f3d1b8376f40223b41169cd1aa834f7ec98b4d03e3bfce3c42b"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2604.06911/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Percutaneous epicardial access (PEA), performed on a beating heart under fluoroscopy, enables arrhythmia treatment. However, advancing a needle toward the thin and moving pericardium remains highly challenging and risky. To address this problem, we present a physics-driven sonification method for Extended Reality (XR)-based multisensory navigation to enhance user perception during the critical needle landing phase in PEA.\n  Dynamic cardiac anatomy from 4D CTA was reconstructed and registered to a real-world coordinate system. Real-time needle tracking provided the position of the needle tip re","authors_text":"Alberto Redaelli, Alessandro Albanesi, Emiliano Votta, Gianluigi Buccoliero, Nassir Navab, Pasquale Vergara, Sasan Matinfar, Serena Dell'Aversana, Stefano Carugo, Veronica Ruozzi","cross_cats":[],"headline":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone.","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.HC","submitted_at":"2026-04-08T10:11:07Z","title":"Physics-driven Sonification for Improving Multisensory Needle Guidance in Percutaneous Epicardial Access"},"references":{"count":3,"internal_anchors":0,"resolved_work":3,"sample":[{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":1,"title":"Epicardial access complications during electrophysiology procedures.Journal of cardiovascu- lar electrophysiology, 32(7):1985–1994,","work_id":"6efc217a-793d-430f-98cd-c461c70215f2","year":1985},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":2,"title":"Anatomy-aware computed tomography-to-ultrasound spine registration","work_id":"11b5cfb4-38d0-4017-a24d-bf4a3bd79eeb","year":2044},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"2003: Opensound control: State of the art 2003.A NIME Reader: Fifteen Years of New Interfaces for Musical Expression, pages 125–145,","work_id":"bbddf302-6b70-42b5-9e83-1568d6d4fae4","year":2003}],"snapshot_sha256":"cfd451a68e9c157175812d6b78c8c849ee78cf03404dcf0a4ea0b6acedb0fe6f"},"source":{"id":"2604.06911","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-10T17:56:54.538185Z","id":"37cfd5a4-c88a-402b-8784-7c10b0ef355e","model_set":{"reader":"grok-4.3"},"one_line_summary":"Physics-driven sonification via a multilayer membrane model improves needle navigation safety, accuracy, and reduces cognitive load in a cardiologist phantom study for pericardial access.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Multisensory sonification using a physical membrane model improves needle safety and accuracy for pericardial access over visual guidance alone.","strongest_claim":"The multisensory method significantly improved navigation safety (χ² = 11.30, p < 0.01), reducing myocardial contact (3.64% vs. 7.27%) and increasing correct access (90.91% vs. 52.73%). Needle placement accuracy improved, with closer membrane proximity (Cliff delta = 0.19) and reduced variability (p < 0.05). NASA-TLX indicated lower cognitive load with multisensory guidance (p < 0.01).","weakest_assumption":"The phantom model and 4D CTA registration sufficiently replicate real clinical challenges of a moving heart under fluoroscopy, including tissue acoustics and needle-tissue interactions, so that observed improvements will translate to live patients."}},"verdict_id":"37cfd5a4-c88a-402b-8784-7c10b0ef355e"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f7d65f650a635cb89cd90fc793d6caf9e01c69a05495afa747490fdb95756467","target":"record","created_at":"2026-05-27T01:05:53Z","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":"fb5ea44e43e850384f634e669b81e7d6895f938dd3deb821ee38c9961eb87382","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.HC","submitted_at":"2026-04-08T10:11:07Z","title_canon_sha256":"8916b345595d2bfc29d8df556908cabef5a483d0174ab21fb539ca6d13a53233"},"schema_version":"1.0","source":{"id":"2604.06911","kind":"arxiv","version":1}},"canonical_sha256":"9d1aad35b4746fb0def5bc3b48606c0e8e168fb555f50de2c34c3ff8cd9cc3cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d1aad35b4746fb0def5bc3b48606c0e8e168fb555f50de2c34c3ff8cd9cc3cb","first_computed_at":"2026-05-27T01:05:53.939207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:05:53.939207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jFAffmx6clRb7Tbm5u2F/S0GPNb2xqFStJCkmxMEVLoIFF+87IQ8sIbXlfUIMmvQmOxEB4eHdWC7Bb9PSh3oAQ==","signature_status":"signed_v1","signed_at":"2026-05-27T01:05:53.940255Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.06911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7d65f650a635cb89cd90fc793d6caf9e01c69a05495afa747490fdb95756467","sha256:252f53fdd4d5a0044312ea7b8c0caeb31e86e581624cc577a3ca378de436cbf3"],"state_sha256":"db9fc47a10c45b1a46f68232ed328d97224998ed39ec6bdd9668aea8a6b80d56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWc4tr1ttgXLgNbxxJXd2+oTfhrVwp8MdIehNF1nwScCx9Tubzkg9IUgNTufX87J486SSnDtFOru441rnP8xAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T12:20:59.375568Z","bundle_sha256":"2042954c747e788713b08be01d2581ebd991a89cb038db62e66524fab97d3889"}}