{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:E4XVND6XGZNKN7AFTVCJYETVKU","short_pith_number":"pith:E4XVND6X","canonical_record":{"source":{"id":"2607.18283","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-30T09:02:13Z","cross_cats_sorted":["cs.AI","cs.CV"],"title_canon_sha256":"49495180e54e983181953026b0d09d0567c6fb2d66f41e7bff1e9206ba83abad","abstract_canon_sha256":"2fa5133e49794b9523255871a3c4e39009a18ee709434e7dbaf7ecea6dfdc1bc"},"schema_version":"1.0"},"canonical_sha256":"272f568fd7365aa6fc059d449c1275550f4ef322884a3c2e7e886168864212cc","source":{"kind":"arxiv","id":"2607.18283","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18283","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18283v1","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18283","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_12","alias_value":"E4XVND6XGZNK","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_16","alias_value":"E4XVND6XGZNKN7AF","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_8","alias_value":"E4XVND6X","created_at":"2026-07-22T00:22:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:E4XVND6XGZNKN7AFTVCJYETVKU","target":"record","payload":{"canonical_record":{"source":{"id":"2607.18283","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-30T09:02:13Z","cross_cats_sorted":["cs.AI","cs.CV"],"title_canon_sha256":"49495180e54e983181953026b0d09d0567c6fb2d66f41e7bff1e9206ba83abad","abstract_canon_sha256":"2fa5133e49794b9523255871a3c4e39009a18ee709434e7dbaf7ecea6dfdc1bc"},"schema_version":"1.0"},"canonical_sha256":"272f568fd7365aa6fc059d449c1275550f4ef322884a3c2e7e886168864212cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-22T00:22:40.023125Z","signature_b64":"SIRzCvOJqTCtaRywsz5OVhiyebRdRcHUPILLKHn++mgew7u5x8yPG5LQgCDuMaDEKFv4xiPGk5NIg18UdallBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"272f568fd7365aa6fc059d449c1275550f4ef322884a3c2e7e886168864212cc","last_reissued_at":"2026-07-22T00:22:40.022350Z","signature_status":"signed_v1","first_computed_at":"2026-07-22T00:22:40.022350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.18283","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":"2026-07-22T00:22:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a6xP/29iZ59ykEYEMEkr0BhRnnel3oYgvaQbe5KOpr192Bvwy4TRo+Pi45cKL/CoSlvhXIBSFLLMCQdLhUxTBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:59:46.625167Z"},"content_sha256":"bbb2ff5bfceaf742e8ceb3cb882557d56219a3ce7c8699097e789bdcea07d7a3","schema_version":"1.0","event_id":"sha256:bbb2ff5bfceaf742e8ceb3cb882557d56219a3ce7c8699097e789bdcea07d7a3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:E4XVND6XGZNKN7AFTVCJYETVKU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FedCC: A Low-Resource Federated Adaptation of Foundation Models for Robust Corpus Callosum localization in Fetal Ultrasound Images","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.CV"],"primary_cat":"cs.LG","authors_text":"Alessandro Di Matteo, Francesco D'Antonio, Gianpaolo Grisolia, Giuseppe Rizzo, Lorenzo Vasciaveo, Maria Chiara Fiorentino, Ricciarda Raffaelli, Sara Moccia","submitted_at":"2026-06-30T09:02:13Z","abstract_excerpt":"Accurate localization of the corpus callosum (CC) in fetal ultrasound (US) images is crucial for the early identification of neurodevelopmental abnormalities. However, this task remains highly challenging due to the intrinsic limitations of US imaging, including low contrast, speckle noise, and the considerable anatomical variability of the CC. We propose FedCC, a federated learning (FL)-based framework for CC localization in fetal US images, specifically designed for realistic multi-center and resource-constrained clinical settings without requiring data sharing. The framework integrates a fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18283","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/2607.18283/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":"2026-07-22T00:22:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7PqWVEkQvPhMVKKzOyoi6kdvI6C3y/WF6rt++YEGND3IYB1pXiQftxL47UXrESv/BvZ+IZ9VAF/ddr+t5ECPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:59:46.625705Z"},"content_sha256":"9146fc1e901d5fb20ead24ac7feecbb7816671bc4f3923536f115b68e772f2f2","schema_version":"1.0","event_id":"sha256:9146fc1e901d5fb20ead24ac7feecbb7816671bc4f3923536f115b68e772f2f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E4XVND6XGZNKN7AFTVCJYETVKU/bundle.json","state_url":"https://pith.science/pith/E4XVND6XGZNKN7AFTVCJYETVKU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E4XVND6XGZNKN7AFTVCJYETVKU/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":"2026-08-10T10:59:46Z","links":{"resolver":"https://pith.science/pith/E4XVND6XGZNKN7AFTVCJYETVKU","bundle":"https://pith.science/pith/E4XVND6XGZNKN7AFTVCJYETVKU/bundle.json","state":"https://pith.science/pith/E4XVND6XGZNKN7AFTVCJYETVKU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E4XVND6XGZNKN7AFTVCJYETVKU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:E4XVND6XGZNKN7AFTVCJYETVKU","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":"2fa5133e49794b9523255871a3c4e39009a18ee709434e7dbaf7ecea6dfdc1bc","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-30T09:02:13Z","title_canon_sha256":"49495180e54e983181953026b0d09d0567c6fb2d66f41e7bff1e9206ba83abad"},"schema_version":"1.0","source":{"id":"2607.18283","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18283","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18283v1","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18283","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_12","alias_value":"E4XVND6XGZNK","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_16","alias_value":"E4XVND6XGZNKN7AF","created_at":"2026-07-22T00:22:40Z"},{"alias_kind":"pith_short_8","alias_value":"E4XVND6X","created_at":"2026-07-22T00:22:40Z"}],"graph_snapshots":[{"event_id":"sha256:9146fc1e901d5fb20ead24ac7feecbb7816671bc4f3923536f115b68e772f2f2","target":"graph","created_at":"2026-07-22T00:22:40Z","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/2607.18283/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate localization of the corpus callosum (CC) in fetal ultrasound (US) images is crucial for the early identification of neurodevelopmental abnormalities. However, this task remains highly challenging due to the intrinsic limitations of US imaging, including low contrast, speckle noise, and the considerable anatomical variability of the CC. We propose FedCC, a federated learning (FL)-based framework for CC localization in fetal US images, specifically designed for realistic multi-center and resource-constrained clinical settings without requiring data sharing. The framework integrates a fr","authors_text":"Alessandro Di Matteo, Francesco D'Antonio, Gianpaolo Grisolia, Giuseppe Rizzo, Lorenzo Vasciaveo, Maria Chiara Fiorentino, Ricciarda Raffaelli, Sara Moccia","cross_cats":["cs.AI","cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-30T09:02:13Z","title":"FedCC: A Low-Resource Federated Adaptation of Foundation Models for Robust Corpus Callosum localization in Fetal Ultrasound Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18283","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:bbb2ff5bfceaf742e8ceb3cb882557d56219a3ce7c8699097e789bdcea07d7a3","target":"record","created_at":"2026-07-22T00:22:40Z","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":"2fa5133e49794b9523255871a3c4e39009a18ee709434e7dbaf7ecea6dfdc1bc","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-30T09:02:13Z","title_canon_sha256":"49495180e54e983181953026b0d09d0567c6fb2d66f41e7bff1e9206ba83abad"},"schema_version":"1.0","source":{"id":"2607.18283","kind":"arxiv","version":1}},"canonical_sha256":"272f568fd7365aa6fc059d449c1275550f4ef322884a3c2e7e886168864212cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"272f568fd7365aa6fc059d449c1275550f4ef322884a3c2e7e886168864212cc","first_computed_at":"2026-07-22T00:22:40.022350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-22T00:22:40.022350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SIRzCvOJqTCtaRywsz5OVhiyebRdRcHUPILLKHn++mgew7u5x8yPG5LQgCDuMaDEKFv4xiPGk5NIg18UdallBg==","signature_status":"signed_v1","signed_at":"2026-07-22T00:22:40.023125Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.18283","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbb2ff5bfceaf742e8ceb3cb882557d56219a3ce7c8699097e789bdcea07d7a3","sha256:9146fc1e901d5fb20ead24ac7feecbb7816671bc4f3923536f115b68e772f2f2"],"state_sha256":"3998cc2c8c23f7a422eb40b73fa065990fb16e1f68e0856c44f1264d5fdcf736"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"abbs4vmAx24grPF6R0RnXOrtvzhNjtQ0LPafvP935py5eVT12bIbGiOO+t9yAghJOD6IhOczsY/cFvkQNlSvBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T10:59:46.631461Z","bundle_sha256":"0ba88c2de78166b9b21700d33a3002259e0fb8613bda039d54a2a024eaf53f1b"}}