{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:3P2FLFIJJFWBPIUMDOUBQJM7V4","short_pith_number":"pith:3P2FLFIJ","canonical_record":{"source":{"id":"1310.5057","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-18T17:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"78c4b9a96a599e64130e13048a0af3c481057d1676f295b953a250a93913cb7e","abstract_canon_sha256":"8181c157e42988d8c23b7d80a43d7e1083b62a1bd6c8b13ca2f9140c68511a16"},"schema_version":"1.0"},"canonical_sha256":"dbf4559509496c17a28c1ba818259faf258266b6b4b0c882e90e9cfb19f3dab5","source":{"kind":"arxiv","id":"1310.5057","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.5057","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"arxiv_version","alias_value":"1310.5057v1","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.5057","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"pith_short_12","alias_value":"3P2FLFIJJFWB","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3P2FLFIJJFWBPIUM","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3P2FLFIJ","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:3P2FLFIJJFWBPIUMDOUBQJM7V4","target":"record","payload":{"canonical_record":{"source":{"id":"1310.5057","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-18T17:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"78c4b9a96a599e64130e13048a0af3c481057d1676f295b953a250a93913cb7e","abstract_canon_sha256":"8181c157e42988d8c23b7d80a43d7e1083b62a1bd6c8b13ca2f9140c68511a16"},"schema_version":"1.0"},"canonical_sha256":"dbf4559509496c17a28c1ba818259faf258266b6b4b0c882e90e9cfb19f3dab5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:10:01.346673Z","signature_b64":"OHcbew5A0xlBetIdYECantEODbpSU8TSEVPMQIJJe5IoxCAABgFtj0Ibq4PNK58g39czM89wEuudsTE1JzV8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dbf4559509496c17a28c1ba818259faf258266b6b4b0c882e90e9cfb19f3dab5","last_reissued_at":"2026-05-18T03:10:01.346070Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:10:01.346070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.5057","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":"2026-05-18T03:10:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ynCtQsIinPP04OGqGyeNAyvtaJ6x6JgzlMFFpHJIOFhlJZVhg/iblDvtYweVKT1C8hRD84kw5M9qXB8O2Z3ODg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:43:26.764377Z"},"content_sha256":"87559cf6936b60874ed3b80d4152cd7d2b4b19928d62c6a9fef47adcf4a92d25","schema_version":"1.0","event_id":"sha256:87559cf6936b60874ed3b80d4152cd7d2b4b19928d62c6a9fef47adcf4a92d25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:3P2FLFIJJFWBPIUMDOUBQJM7V4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Airflow in a Multiscale Subject-Specific Breathing Human Lung Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Ching-Long Lin, Eric A. Hoffman, Jiwoong Choi, Merryn H. Tawhai, Youbing Yin","submitted_at":"2013-10-18T17:35:06Z","abstract_excerpt":"The airflow in a subject-specific breathing human lung is simulated with a multiscale computational fluid dynamics (CFD) lung model. The three-dimensional (3D) airway geometry beginning from the mouth to about 7 generations of airways is reconstructed from the multi-detector row computed tomography (MDCT) image at the total lung capacity (TLC). Along with the segmented lobe surfaces, we can build an anatomically-consistent one-dimensional (1D) airway tree spanning over more than 20 generations down to the terminal bronchioles, which is specific to the CT resolved airways and lobes (J Biomech 4"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.5057","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":""},"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":"2026-05-18T03:10:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V5UnDgs7LmleT4gnr/HuINcqt/cVGY1eBTJnj3HDVqkljziWZDDo03rC5BhMpkwTl9wV+7CaIU/cBi8pv+zkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:43:26.764727Z"},"content_sha256":"3f7d274fb0bb6866a8f70386a8514fd50a1297cd345cd15040da68e51fcebb50","schema_version":"1.0","event_id":"sha256:3f7d274fb0bb6866a8f70386a8514fd50a1297cd345cd15040da68e51fcebb50"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/bundle.json","state_url":"https://pith.science/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/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":"2026-06-04T02:43:26Z","links":{"resolver":"https://pith.science/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4","bundle":"https://pith.science/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/bundle.json","state":"https://pith.science/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3P2FLFIJJFWBPIUMDOUBQJM7V4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:3P2FLFIJJFWBPIUMDOUBQJM7V4","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":"8181c157e42988d8c23b7d80a43d7e1083b62a1bd6c8b13ca2f9140c68511a16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-18T17:35:06Z","title_canon_sha256":"78c4b9a96a599e64130e13048a0af3c481057d1676f295b953a250a93913cb7e"},"schema_version":"1.0","source":{"id":"1310.5057","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.5057","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"arxiv_version","alias_value":"1310.5057v1","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.5057","created_at":"2026-05-18T03:10:01Z"},{"alias_kind":"pith_short_12","alias_value":"3P2FLFIJJFWB","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3P2FLFIJJFWBPIUM","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3P2FLFIJ","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:3f7d274fb0bb6866a8f70386a8514fd50a1297cd345cd15040da68e51fcebb50","target":"graph","created_at":"2026-05-18T03:10:01Z","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"},"paper":{"abstract_excerpt":"The airflow in a subject-specific breathing human lung is simulated with a multiscale computational fluid dynamics (CFD) lung model. The three-dimensional (3D) airway geometry beginning from the mouth to about 7 generations of airways is reconstructed from the multi-detector row computed tomography (MDCT) image at the total lung capacity (TLC). Along with the segmented lobe surfaces, we can build an anatomically-consistent one-dimensional (1D) airway tree spanning over more than 20 generations down to the terminal bronchioles, which is specific to the CT resolved airways and lobes (J Biomech 4","authors_text":"Ching-Long Lin, Eric A. Hoffman, Jiwoong Choi, Merryn H. Tawhai, Youbing Yin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-18T17:35:06Z","title":"Airflow in a Multiscale Subject-Specific Breathing Human Lung Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.5057","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":"sha256:87559cf6936b60874ed3b80d4152cd7d2b4b19928d62c6a9fef47adcf4a92d25","target":"record","created_at":"2026-05-18T03:10:01Z","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":"8181c157e42988d8c23b7d80a43d7e1083b62a1bd6c8b13ca2f9140c68511a16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-18T17:35:06Z","title_canon_sha256":"78c4b9a96a599e64130e13048a0af3c481057d1676f295b953a250a93913cb7e"},"schema_version":"1.0","source":{"id":"1310.5057","kind":"arxiv","version":1}},"canonical_sha256":"dbf4559509496c17a28c1ba818259faf258266b6b4b0c882e90e9cfb19f3dab5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbf4559509496c17a28c1ba818259faf258266b6b4b0c882e90e9cfb19f3dab5","first_computed_at":"2026-05-18T03:10:01.346070Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:10:01.346070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OHcbew5A0xlBetIdYECantEODbpSU8TSEVPMQIJJe5IoxCAABgFtj0Ibq4PNK58g39czM89wEuudsTE1JzV8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:10:01.346673Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.5057","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87559cf6936b60874ed3b80d4152cd7d2b4b19928d62c6a9fef47adcf4a92d25","sha256:3f7d274fb0bb6866a8f70386a8514fd50a1297cd345cd15040da68e51fcebb50"],"state_sha256":"a1e7e3757c93ed073b38b29d90ef7a4a3d0df3867929bc1a815a9201703a0bca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+IitjEUycPVCTMd5Ax8JFFZi8bsT4/zE2nNx0GbLzMIj+P4iVZ/XVcTrfKOfRb3YBHbfZqg0V9eeObu6FBhACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T02:43:26.766664Z","bundle_sha256":"cc3e84447e63f85c4a4f42d07a5fc9d6c3f9a8e0d3f0c786a4291e3485e37711"}}