{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ITVZY52GTONKG4FWZDTI46NQM7","short_pith_number":"pith:ITVZY52G","canonical_record":{"source":{"id":"2311.07234","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-11-13T10:54:53Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"5afa08ed4adb677ceb225b6d5a079b78c3517a5dbaa5094bc45cc87b20ec1fd5","abstract_canon_sha256":"2843faa0815c06e771dc9e2d2920c8dcd7b850504c833274c6edc40762f024b9"},"schema_version":"1.0"},"canonical_sha256":"44eb9c77469b9aa370b6c8e68e79b067e0284c5030fb384aba551779b8d6a6cc","source":{"kind":"arxiv","id":"2311.07234","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.07234","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"arxiv_version","alias_value":"2311.07234v1","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.07234","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_12","alias_value":"ITVZY52GTONK","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_16","alias_value":"ITVZY52GTONKG4FW","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_8","alias_value":"ITVZY52G","created_at":"2026-07-05T07:12:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ITVZY52GTONKG4FWZDTI46NQM7","target":"record","payload":{"canonical_record":{"source":{"id":"2311.07234","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-11-13T10:54:53Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"5afa08ed4adb677ceb225b6d5a079b78c3517a5dbaa5094bc45cc87b20ec1fd5","abstract_canon_sha256":"2843faa0815c06e771dc9e2d2920c8dcd7b850504c833274c6edc40762f024b9"},"schema_version":"1.0"},"canonical_sha256":"44eb9c77469b9aa370b6c8e68e79b067e0284c5030fb384aba551779b8d6a6cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:12:10.052142Z","signature_b64":"RCLcC0uxltbGMbgqtQpExaYAtqZHXDBOIQRL/cXsxngGGlkS7nFFnOWt/RaV8lw264su2ChXHO3XYg1WL0OZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44eb9c77469b9aa370b6c8e68e79b067e0284c5030fb384aba551779b8d6a6cc","last_reissued_at":"2026-07-05T07:12:10.051671Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:12:10.051671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.07234","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":"2026-07-05T07:12:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FeUxqDH+nsJVn/bIIRIc4ET3UGvkYA9F/aamwK862n8rM1/orJ5AAuTf02vIsgAqwNkY/8JkFHbSXRqThXOgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:37:08.619651Z"},"content_sha256":"32d4b26e93d61bd121cb7f4a5e31cdb13e7a905f72ea3a92e24d85025484e81c","schema_version":"1.0","event_id":"sha256:32d4b26e93d61bd121cb7f4a5e31cdb13e7a905f72ea3a92e24d85025484e81c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ITVZY52GTONKG4FWZDTI46NQM7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-task learning for joint weakly-supervised segmentation and aortic arch anomaly classification in fetal cardiac MRI","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV","cs.LG"],"primary_cat":"eess.IV","authors_text":"Alena Uus, Andrew P. King, David F.A. Lloyd, Irina Grigorescu, Johannes K. Steinweg, Kuberan Pushparajah, Maria Deprez, Milou P.M. van Poppel, Paula Ramirez","submitted_at":"2023-11-13T10:54:53Z","abstract_excerpt":"Congenital Heart Disease (CHD) is a group of cardiac malformations present already during fetal life, representing the prevailing category of birth defects globally. Our aim in this study is to aid 3D fetal vessel topology visualisation in aortic arch anomalies, a group which encompasses a range of conditions with significant anatomical heterogeneity. We present a multi-task framework for automated multi-class fetal vessel segmentation from 3D black blood T2w MRI and anomaly classification. Our training data consists of binary manual segmentation masks of the cardiac vessels' region in individ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.07234","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/2311.07234/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":"2026-07-05T07:12:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1EpSUC+SJDzV3RB4OxHnw81kv0WpDXlSLN0dm0gJ1oBgoOdBhpHJZPVh4vdFxrOO7OEFXhPX5wRRdf31ezsQAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:37:08.620166Z"},"content_sha256":"664f9d9b01f9c2f355515077cfa6d2de3051167c6240d2c5d09619c20bc205d9","schema_version":"1.0","event_id":"sha256:664f9d9b01f9c2f355515077cfa6d2de3051167c6240d2c5d09619c20bc205d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ITVZY52GTONKG4FWZDTI46NQM7/bundle.json","state_url":"https://pith.science/pith/ITVZY52GTONKG4FWZDTI46NQM7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ITVZY52GTONKG4FWZDTI46NQM7/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":"2026-08-14T14:37:08Z","links":{"resolver":"https://pith.science/pith/ITVZY52GTONKG4FWZDTI46NQM7","bundle":"https://pith.science/pith/ITVZY52GTONKG4FWZDTI46NQM7/bundle.json","state":"https://pith.science/pith/ITVZY52GTONKG4FWZDTI46NQM7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ITVZY52GTONKG4FWZDTI46NQM7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ITVZY52GTONKG4FWZDTI46NQM7","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":"2843faa0815c06e771dc9e2d2920c8dcd7b850504c833274c6edc40762f024b9","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-11-13T10:54:53Z","title_canon_sha256":"5afa08ed4adb677ceb225b6d5a079b78c3517a5dbaa5094bc45cc87b20ec1fd5"},"schema_version":"1.0","source":{"id":"2311.07234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.07234","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"arxiv_version","alias_value":"2311.07234v1","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.07234","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_12","alias_value":"ITVZY52GTONK","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_16","alias_value":"ITVZY52GTONKG4FW","created_at":"2026-07-05T07:12:10Z"},{"alias_kind":"pith_short_8","alias_value":"ITVZY52G","created_at":"2026-07-05T07:12:10Z"}],"graph_snapshots":[{"event_id":"sha256:664f9d9b01f9c2f355515077cfa6d2de3051167c6240d2c5d09619c20bc205d9","target":"graph","created_at":"2026-07-05T07:12:10Z","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/2311.07234/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Congenital Heart Disease (CHD) is a group of cardiac malformations present already during fetal life, representing the prevailing category of birth defects globally. Our aim in this study is to aid 3D fetal vessel topology visualisation in aortic arch anomalies, a group which encompasses a range of conditions with significant anatomical heterogeneity. We present a multi-task framework for automated multi-class fetal vessel segmentation from 3D black blood T2w MRI and anomaly classification. Our training data consists of binary manual segmentation masks of the cardiac vessels' region in individ","authors_text":"Alena Uus, Andrew P. King, David F.A. Lloyd, Irina Grigorescu, Johannes K. Steinweg, Kuberan Pushparajah, Maria Deprez, Milou P.M. van Poppel, Paula Ramirez","cross_cats":["cs.CV","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-11-13T10:54:53Z","title":"Multi-task learning for joint weakly-supervised segmentation and aortic arch anomaly classification in fetal cardiac MRI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.07234","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":"sha256:32d4b26e93d61bd121cb7f4a5e31cdb13e7a905f72ea3a92e24d85025484e81c","target":"record","created_at":"2026-07-05T07:12:10Z","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":"2843faa0815c06e771dc9e2d2920c8dcd7b850504c833274c6edc40762f024b9","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-11-13T10:54:53Z","title_canon_sha256":"5afa08ed4adb677ceb225b6d5a079b78c3517a5dbaa5094bc45cc87b20ec1fd5"},"schema_version":"1.0","source":{"id":"2311.07234","kind":"arxiv","version":1}},"canonical_sha256":"44eb9c77469b9aa370b6c8e68e79b067e0284c5030fb384aba551779b8d6a6cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"44eb9c77469b9aa370b6c8e68e79b067e0284c5030fb384aba551779b8d6a6cc","first_computed_at":"2026-07-05T07:12:10.051671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:12:10.051671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RCLcC0uxltbGMbgqtQpExaYAtqZHXDBOIQRL/cXsxngGGlkS7nFFnOWt/RaV8lw264su2ChXHO3XYg1WL0OZAw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:12:10.052142Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.07234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32d4b26e93d61bd121cb7f4a5e31cdb13e7a905f72ea3a92e24d85025484e81c","sha256:664f9d9b01f9c2f355515077cfa6d2de3051167c6240d2c5d09619c20bc205d9"],"state_sha256":"1e5e6e7135881815635a0d2bf8d768e75941e5694261629f4c1400cc721dae22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"diYjA0vxnZFgeTKpW9ClXKk/vKR8l3UqRKga1LkGFAxZZqEtjsDYnUjaUlExa1oUpRZoHcR/JpqrPbVGxHZ2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:37:08.624440Z","bundle_sha256":"4d46f1cee2d37de11756e156445945473037aa1cef1e52c156c47c246cbaf591"}}