{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:BRFO2GNLEX252OLKM6THLGGXQU","short_pith_number":"pith:BRFO2GNL","canonical_record":{"source":{"id":"2410.11601","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-15T13:37:33Z","cross_cats_sorted":["cs.NA","math.NA"],"title_canon_sha256":"c1076124da2571044c6b41cbcec403ad77874a558dd99bec16eaee74b1b9a5ae","abstract_canon_sha256":"5463c2aaf26c918874044fb6da0497c6756d0de85921fddd6d5865ddbf45147b"},"schema_version":"1.0"},"canonical_sha256":"0c4aed19ab25f5dd396a67a67598d7852a03d916dbb2bf675601e67964dcda0e","source":{"kind":"arxiv","id":"2410.11601","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.11601","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"arxiv_version","alias_value":"2410.11601v1","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.11601","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_12","alias_value":"BRFO2GNLEX25","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_16","alias_value":"BRFO2GNLEX252OLK","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_8","alias_value":"BRFO2GNL","created_at":"2026-07-05T09:20:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:BRFO2GNLEX252OLKM6THLGGXQU","target":"record","payload":{"canonical_record":{"source":{"id":"2410.11601","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-15T13:37:33Z","cross_cats_sorted":["cs.NA","math.NA"],"title_canon_sha256":"c1076124da2571044c6b41cbcec403ad77874a558dd99bec16eaee74b1b9a5ae","abstract_canon_sha256":"5463c2aaf26c918874044fb6da0497c6756d0de85921fddd6d5865ddbf45147b"},"schema_version":"1.0"},"canonical_sha256":"0c4aed19ab25f5dd396a67a67598d7852a03d916dbb2bf675601e67964dcda0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:20:56.384483Z","signature_b64":"s4Vq42rsMluTzDF4frrxHm+VSv+QRoX6qRe/NGaczau8vwcBWBUjCt9Za9m7JDBM1Ap+spW7icQvJ2DjQf7PAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c4aed19ab25f5dd396a67a67598d7852a03d916dbb2bf675601e67964dcda0e","last_reissued_at":"2026-07-05T09:20:56.384007Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:20:56.384007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.11601","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":"2026-07-05T09:20:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kPjZeekD5kAyjchwJm2a94Tbljh0YnFqKimCxSaE0jIdlpGnxi08WxFGWEF931kNHqChBhTjOKhi35ffWQXRCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T11:47:55.427346Z"},"content_sha256":"0d0fa97e4fb054d62ce8932bd9fbff7b1876ac10db7e9c6f9a09dacf86bc5e72","schema_version":"1.0","event_id":"sha256:0d0fa97e4fb054d62ce8932bd9fbff7b1876ac10db7e9c6f9a09dacf86bc5e72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:BRFO2GNLEX252OLKM6THLGGXQU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Defining myocardial fiber bundle architecture in atrial digital twins","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.NA","math.NA"],"primary_cat":"physics.med-ph","authors_text":"Alfio Quarteroni, Luca Dede', Natalia A. Trayanova, Roberto Piersanti, Ryan Bradley, Syed Yusuf Alid","submitted_at":"2024-10-15T13:37:33Z","abstract_excerpt":"A key component in developing atrial digital twins (ADT) - virtual representations of patients' atria - is the accurate prescription of myocardial fibers which are essential for the tissue characterization. Due to the difficulty of reconstructing atrial fibers from medical imaging, a widely used strategy for fiber generation in ADT relies on mathematical models. Existing methodologies utilze semi-automatic approaches, are tailored to specific morphologies, and lack rigorous validation against imaging fiber data. In this study, we introduce a novel atrial Laplace-Dirichlet-Rule-Based Method (LD"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.11601","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/2410.11601/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":"2026-07-05T09:20:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nSRGQLM9fVOCna2mxDhJlg1wL8yp7jWfUP1EZH3pYybzDCp+yGWWsaOc930M809bP4VwaWbswN/jQS98nM0NCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T11:47:55.427664Z"},"content_sha256":"167b523e59359ed2c1cd14ed03f53662e297b5c12e06a6638ea8223083d42e9e","schema_version":"1.0","event_id":"sha256:167b523e59359ed2c1cd14ed03f53662e297b5c12e06a6638ea8223083d42e9e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BRFO2GNLEX252OLKM6THLGGXQU/bundle.json","state_url":"https://pith.science/pith/BRFO2GNLEX252OLKM6THLGGXQU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BRFO2GNLEX252OLKM6THLGGXQU/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":"2026-08-14T11:47:55Z","links":{"resolver":"https://pith.science/pith/BRFO2GNLEX252OLKM6THLGGXQU","bundle":"https://pith.science/pith/BRFO2GNLEX252OLKM6THLGGXQU/bundle.json","state":"https://pith.science/pith/BRFO2GNLEX252OLKM6THLGGXQU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BRFO2GNLEX252OLKM6THLGGXQU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:BRFO2GNLEX252OLKM6THLGGXQU","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":"5463c2aaf26c918874044fb6da0497c6756d0de85921fddd6d5865ddbf45147b","cross_cats_sorted":["cs.NA","math.NA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-15T13:37:33Z","title_canon_sha256":"c1076124da2571044c6b41cbcec403ad77874a558dd99bec16eaee74b1b9a5ae"},"schema_version":"1.0","source":{"id":"2410.11601","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.11601","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"arxiv_version","alias_value":"2410.11601v1","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.11601","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_12","alias_value":"BRFO2GNLEX25","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_16","alias_value":"BRFO2GNLEX252OLK","created_at":"2026-07-05T09:20:56Z"},{"alias_kind":"pith_short_8","alias_value":"BRFO2GNL","created_at":"2026-07-05T09:20:56Z"}],"graph_snapshots":[{"event_id":"sha256:167b523e59359ed2c1cd14ed03f53662e297b5c12e06a6638ea8223083d42e9e","target":"graph","created_at":"2026-07-05T09:20:56Z","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":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2410.11601/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A key component in developing atrial digital twins (ADT) - virtual representations of patients' atria - is the accurate prescription of myocardial fibers which are essential for the tissue characterization. Due to the difficulty of reconstructing atrial fibers from medical imaging, a widely used strategy for fiber generation in ADT relies on mathematical models. Existing methodologies utilze semi-automatic approaches, are tailored to specific morphologies, and lack rigorous validation against imaging fiber data. In this study, we introduce a novel atrial Laplace-Dirichlet-Rule-Based Method (LD","authors_text":"Alfio Quarteroni, Luca Dede', Natalia A. Trayanova, Roberto Piersanti, Ryan Bradley, Syed Yusuf Alid","cross_cats":["cs.NA","math.NA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-15T13:37:33Z","title":"Defining myocardial fiber bundle architecture in atrial digital twins"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.11601","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":"sha256:0d0fa97e4fb054d62ce8932bd9fbff7b1876ac10db7e9c6f9a09dacf86bc5e72","target":"record","created_at":"2026-07-05T09:20:56Z","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":"5463c2aaf26c918874044fb6da0497c6756d0de85921fddd6d5865ddbf45147b","cross_cats_sorted":["cs.NA","math.NA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-15T13:37:33Z","title_canon_sha256":"c1076124da2571044c6b41cbcec403ad77874a558dd99bec16eaee74b1b9a5ae"},"schema_version":"1.0","source":{"id":"2410.11601","kind":"arxiv","version":1}},"canonical_sha256":"0c4aed19ab25f5dd396a67a67598d7852a03d916dbb2bf675601e67964dcda0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c4aed19ab25f5dd396a67a67598d7852a03d916dbb2bf675601e67964dcda0e","first_computed_at":"2026-07-05T09:20:56.384007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:20:56.384007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s4Vq42rsMluTzDF4frrxHm+VSv+QRoX6qRe/NGaczau8vwcBWBUjCt9Za9m7JDBM1Ap+spW7icQvJ2DjQf7PAg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:20:56.384483Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.11601","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0d0fa97e4fb054d62ce8932bd9fbff7b1876ac10db7e9c6f9a09dacf86bc5e72","sha256:167b523e59359ed2c1cd14ed03f53662e297b5c12e06a6638ea8223083d42e9e"],"state_sha256":"9f1168833ea8253ae3faca1928ab7df219b64f01a5aa660b7684f6f651c63164"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uvbN+x/fBuPQkLIkqbHU7jywGrmf5ALqVxxflq1p/5fyhd2iQiNgD0IN4o1oT84mz1wMZRYHSB8lofhdxCGGCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T11:47:55.431147Z","bundle_sha256":"3836677c1db520dc186b35a9bb234016549620631d906787f7811ff9119669fc"}}