{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:YNRU5OXMX4IX6JI7H7M63Z2A52","short_pith_number":"pith:YNRU5OXM","canonical_record":{"source":{"id":"2507.21716","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-07-29T11:47:14Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"7a9e1c821dd63ab151e50e28b4529cf2fdf510ac4ae1db9b1220f92d43d248c6","abstract_canon_sha256":"02cdcd13fa2a55b77ae935cbb25d3efbb53e2113db07c5754c78bc294fa84d37"},"schema_version":"1.0"},"canonical_sha256":"c3634ebaecbf117f251f3fd9ede740ee9eaa329446ba9c2975d8c71886adde70","source":{"kind":"arxiv","id":"2507.21716","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21716","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21716v1","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21716","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_12","alias_value":"YNRU5OXMX4IX","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_16","alias_value":"YNRU5OXMX4IX6JI7","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_8","alias_value":"YNRU5OXM","created_at":"2026-07-05T11:45:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:YNRU5OXMX4IX6JI7H7M63Z2A52","target":"record","payload":{"canonical_record":{"source":{"id":"2507.21716","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-07-29T11:47:14Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"7a9e1c821dd63ab151e50e28b4529cf2fdf510ac4ae1db9b1220f92d43d248c6","abstract_canon_sha256":"02cdcd13fa2a55b77ae935cbb25d3efbb53e2113db07c5754c78bc294fa84d37"},"schema_version":"1.0"},"canonical_sha256":"c3634ebaecbf117f251f3fd9ede740ee9eaa329446ba9c2975d8c71886adde70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:45:05.091312Z","signature_b64":"lbz0fnwjM7PdKZWjab8XCybp/HPClQIh6zvS4Ttw+mfv8z6ZzDRrDJBNT/sT+SFjo7D+BDHIPgUQ1tp5TzZhCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3634ebaecbf117f251f3fd9ede740ee9eaa329446ba9c2975d8c71886adde70","last_reissued_at":"2026-07-05T11:45:05.090535Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:45:05.090535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.21716","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":"2026-07-05T11:45:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BVF3a5rdAebPV9Y5OvqtEuFar0Raw7c+4w1a1AEOqp7TsrL8LLhYU2f+yzJbBKA1UUnIt0F6wWpjDI9/OzE7Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:38:39.820949Z"},"content_sha256":"14ac7338dd196c044dc5ab5f729adae8bd44e250e6727fca15c2dea36efe5ab2","schema_version":"1.0","event_id":"sha256:14ac7338dd196c044dc5ab5f729adae8bd44e250e6727fca15c2dea36efe5ab2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:YNRU5OXMX4IX6JI7H7M63Z2A52","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Reduced Order Modeling Based on HODMD to Predict Intraventricular Flow Dynamics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Eneko Lazpita, Jesus Garicano-Mena, Soledad Le Clainche","submitted_at":"2025-07-29T11:47:14Z","abstract_excerpt":"Accurate and efficient modeling of cardiac blood flow is crucial for advancing data-driven tools in cardiovascular research and clinical applications. Recently, the accuracy and availability of computational fluid dynamics (CFD) methodologies for simulating intraventricular flow have increased. However, these methods remain complex and computationally costly. This study presents a reduced order model (ROM) based on higher order dynamic mode decomposition (HODMD). The proposed approach enables accurate reconstruction and long term prediction of left ventricle flow fields. The method is tested o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21716","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/2507.21716/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":"2026-07-05T11:45:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yt7s9exb2QU7O9u+bS2+HTjfxFPIzhMxIHLvsuDcf7ZPBIw/FyeCtx8NjSyqWgTzyxc8lAUwNiYDiqYg0hFtDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:38:39.821880Z"},"content_sha256":"9847829ed4e88e5f182976ab305bebe4d00dd458e378456b17032434c0d05108","schema_version":"1.0","event_id":"sha256:9847829ed4e88e5f182976ab305bebe4d00dd458e378456b17032434c0d05108"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/bundle.json","state_url":"https://pith.science/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/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":"2026-08-03T21:38:39Z","links":{"resolver":"https://pith.science/pith/YNRU5OXMX4IX6JI7H7M63Z2A52","bundle":"https://pith.science/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/bundle.json","state":"https://pith.science/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YNRU5OXMX4IX6JI7H7M63Z2A52/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:YNRU5OXMX4IX6JI7H7M63Z2A52","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":"02cdcd13fa2a55b77ae935cbb25d3efbb53e2113db07c5754c78bc294fa84d37","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-07-29T11:47:14Z","title_canon_sha256":"7a9e1c821dd63ab151e50e28b4529cf2fdf510ac4ae1db9b1220f92d43d248c6"},"schema_version":"1.0","source":{"id":"2507.21716","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21716","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21716v1","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21716","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_12","alias_value":"YNRU5OXMX4IX","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_16","alias_value":"YNRU5OXMX4IX6JI7","created_at":"2026-07-05T11:45:05Z"},{"alias_kind":"pith_short_8","alias_value":"YNRU5OXM","created_at":"2026-07-05T11:45:05Z"}],"graph_snapshots":[{"event_id":"sha256:9847829ed4e88e5f182976ab305bebe4d00dd458e378456b17032434c0d05108","target":"graph","created_at":"2026-07-05T11:45:05Z","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/2507.21716/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate and efficient modeling of cardiac blood flow is crucial for advancing data-driven tools in cardiovascular research and clinical applications. Recently, the accuracy and availability of computational fluid dynamics (CFD) methodologies for simulating intraventricular flow have increased. However, these methods remain complex and computationally costly. This study presents a reduced order model (ROM) based on higher order dynamic mode decomposition (HODMD). The proposed approach enables accurate reconstruction and long term prediction of left ventricle flow fields. The method is tested o","authors_text":"Eneko Lazpita, Jesus Garicano-Mena, Soledad Le Clainche","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-07-29T11:47:14Z","title":"Efficient Reduced Order Modeling Based on HODMD to Predict Intraventricular Flow Dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21716","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":"sha256:14ac7338dd196c044dc5ab5f729adae8bd44e250e6727fca15c2dea36efe5ab2","target":"record","created_at":"2026-07-05T11:45:05Z","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":"02cdcd13fa2a55b77ae935cbb25d3efbb53e2113db07c5754c78bc294fa84d37","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-07-29T11:47:14Z","title_canon_sha256":"7a9e1c821dd63ab151e50e28b4529cf2fdf510ac4ae1db9b1220f92d43d248c6"},"schema_version":"1.0","source":{"id":"2507.21716","kind":"arxiv","version":1}},"canonical_sha256":"c3634ebaecbf117f251f3fd9ede740ee9eaa329446ba9c2975d8c71886adde70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3634ebaecbf117f251f3fd9ede740ee9eaa329446ba9c2975d8c71886adde70","first_computed_at":"2026-07-05T11:45:05.090535Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:45:05.090535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lbz0fnwjM7PdKZWjab8XCybp/HPClQIh6zvS4Ttw+mfv8z6ZzDRrDJBNT/sT+SFjo7D+BDHIPgUQ1tp5TzZhCA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:45:05.091312Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.21716","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14ac7338dd196c044dc5ab5f729adae8bd44e250e6727fca15c2dea36efe5ab2","sha256:9847829ed4e88e5f182976ab305bebe4d00dd458e378456b17032434c0d05108"],"state_sha256":"6028f05b889ae46b271237143c063ea43cb16d959d6439bad087b53b0bbf59b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wnTg5ArE10j5hfJe3s3Qgp5dyoPLb7sdLYWwctIQj8V61G/I7Mh+ImPfZWI5YTKLTsjcbgwYJ5s+BZ3BUYTKDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:38:39.829159Z","bundle_sha256":"b28cb50b8b7557b5fbfce235a6c07db2b74b0ff225430a2f3f418d6b52a4588b"}}