{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CIIN2S5E2LR6MYCAY5II2M3MZU","short_pith_number":"pith:CIIN2S5E","canonical_record":{"source":{"id":"2312.05148","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-12-08T16:29:10Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6915d81c697ee12496bedad7c58e3049e3fe034278ab37672cdb5c67ace7ba44","abstract_canon_sha256":"a5aab8bd6c07ded1a0d6ed7c8dcd14bbcacfbcca61dbd704d273e8ff46d02125"},"schema_version":"1.0"},"canonical_sha256":"1210dd4ba4d2e3e66040c7508d336ccd39a3185aaaf883d55f519f4bb605d8b0","source":{"kind":"arxiv","id":"2312.05148","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.05148","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"2312.05148v1","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.05148","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"CIIN2S5E2LR6","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_16","alias_value":"CIIN2S5E2LR6MYCA","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_8","alias_value":"CIIN2S5E","created_at":"2026-07-05T07:21:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CIIN2S5E2LR6MYCAY5II2M3MZU","target":"record","payload":{"canonical_record":{"source":{"id":"2312.05148","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-12-08T16:29:10Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6915d81c697ee12496bedad7c58e3049e3fe034278ab37672cdb5c67ace7ba44","abstract_canon_sha256":"a5aab8bd6c07ded1a0d6ed7c8dcd14bbcacfbcca61dbd704d273e8ff46d02125"},"schema_version":"1.0"},"canonical_sha256":"1210dd4ba4d2e3e66040c7508d336ccd39a3185aaaf883d55f519f4bb605d8b0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:21:57.431837Z","signature_b64":"35ubqfOjEPykmEYkqEvRBt7JhSzIgGCEKDgXl27EeaxAe9BJX5cVpNorWn/JpvYEpftam5OO8y5qBGI9PYqfAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1210dd4ba4d2e3e66040c7508d336ccd39a3185aaaf883d55f519f4bb605d8b0","last_reissued_at":"2026-07-05T07:21:57.431430Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:21:57.431430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.05148","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":"2026-07-05T07:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dLVREhm7eJ8oozUefUY34AySdnuD5YGkEonXY4EQg4ZUQAE1ZsK/4+xgK9qhLL5K618ZHVKTFX9heDdXfKZaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T20:19:25.433786Z"},"content_sha256":"da45184fc2baf63b9a1b011d26dcc13f2f104ac6ea80a3e5153d50a852baf61a","schema_version":"1.0","event_id":"sha256:da45184fc2baf63b9a1b011d26dcc13f2f104ac6ea80a3e5153d50a852baf61a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CIIN2S5E2LR6MYCAY5II2M3MZU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shape-aware Segmentation of the Placenta in BOLD Fetal MRI Time Series","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Clinton J. Wang, Eileen Pan, Esra Abaci Turk, Katherine I. Hobgood, Neel Dey, P. Ellen Grant, Polina Golland, Sean I. Young, S. Mazdak Abulnaga","submitted_at":"2023-12-08T16:29:10Z","abstract_excerpt":"Blood oxygen level dependent (BOLD) MRI time series with maternal hyperoxia can assess placental oxygenation and function. Measuring precise BOLD changes in the placenta requires accurate temporal placental segmentation and is confounded by fetal and maternal motion, contractions, and hyperoxia-induced intensity changes. Current BOLD placenta segmentation methods warp a manually annotated subject-specific template to the entire time series. However, as the placenta is a thin, elongated, and highly non-rigid organ subject to large deformations and obfuscated edges, existing work cannot accurate"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.05148","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/2312.05148/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":"2026-07-05T07:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tUzhFKxPsU/2ON4hA44BfoebbMxo4fgdxxHppFEe//t4ajventXB1fjHpySHM+eG6lytjPKVHFHDD4Nn9V36Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T20:19:25.434156Z"},"content_sha256":"a5a4b342941fb52acaddcfe7fc86e8bdc4a8515fe7d4b5498a404c09a09baf42","schema_version":"1.0","event_id":"sha256:a5a4b342941fb52acaddcfe7fc86e8bdc4a8515fe7d4b5498a404c09a09baf42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/bundle.json","state_url":"https://pith.science/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/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":"2026-07-11T20:19:25Z","links":{"resolver":"https://pith.science/pith/CIIN2S5E2LR6MYCAY5II2M3MZU","bundle":"https://pith.science/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/bundle.json","state":"https://pith.science/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CIIN2S5E2LR6MYCAY5II2M3MZU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CIIN2S5E2LR6MYCAY5II2M3MZU","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":"a5aab8bd6c07ded1a0d6ed7c8dcd14bbcacfbcca61dbd704d273e8ff46d02125","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-12-08T16:29:10Z","title_canon_sha256":"6915d81c697ee12496bedad7c58e3049e3fe034278ab37672cdb5c67ace7ba44"},"schema_version":"1.0","source":{"id":"2312.05148","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.05148","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"2312.05148v1","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.05148","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"CIIN2S5E2LR6","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_16","alias_value":"CIIN2S5E2LR6MYCA","created_at":"2026-07-05T07:21:57Z"},{"alias_kind":"pith_short_8","alias_value":"CIIN2S5E","created_at":"2026-07-05T07:21:57Z"}],"graph_snapshots":[{"event_id":"sha256:a5a4b342941fb52acaddcfe7fc86e8bdc4a8515fe7d4b5498a404c09a09baf42","target":"graph","created_at":"2026-07-05T07:21:57Z","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/2312.05148/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Blood oxygen level dependent (BOLD) MRI time series with maternal hyperoxia can assess placental oxygenation and function. Measuring precise BOLD changes in the placenta requires accurate temporal placental segmentation and is confounded by fetal and maternal motion, contractions, and hyperoxia-induced intensity changes. Current BOLD placenta segmentation methods warp a manually annotated subject-specific template to the entire time series. However, as the placenta is a thin, elongated, and highly non-rigid organ subject to large deformations and obfuscated edges, existing work cannot accurate","authors_text":"Clinton J. Wang, Eileen Pan, Esra Abaci Turk, Katherine I. Hobgood, Neel Dey, P. Ellen Grant, Polina Golland, Sean I. Young, S. Mazdak Abulnaga","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-12-08T16:29:10Z","title":"Shape-aware Segmentation of the Placenta in BOLD Fetal MRI Time Series"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.05148","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:da45184fc2baf63b9a1b011d26dcc13f2f104ac6ea80a3e5153d50a852baf61a","target":"record","created_at":"2026-07-05T07:21:57Z","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":"a5aab8bd6c07ded1a0d6ed7c8dcd14bbcacfbcca61dbd704d273e8ff46d02125","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2023-12-08T16:29:10Z","title_canon_sha256":"6915d81c697ee12496bedad7c58e3049e3fe034278ab37672cdb5c67ace7ba44"},"schema_version":"1.0","source":{"id":"2312.05148","kind":"arxiv","version":1}},"canonical_sha256":"1210dd4ba4d2e3e66040c7508d336ccd39a3185aaaf883d55f519f4bb605d8b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1210dd4ba4d2e3e66040c7508d336ccd39a3185aaaf883d55f519f4bb605d8b0","first_computed_at":"2026-07-05T07:21:57.431430Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:21:57.431430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"35ubqfOjEPykmEYkqEvRBt7JhSzIgGCEKDgXl27EeaxAe9BJX5cVpNorWn/JpvYEpftam5OO8y5qBGI9PYqfAw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:21:57.431837Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.05148","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da45184fc2baf63b9a1b011d26dcc13f2f104ac6ea80a3e5153d50a852baf61a","sha256:a5a4b342941fb52acaddcfe7fc86e8bdc4a8515fe7d4b5498a404c09a09baf42"],"state_sha256":"345d60660c1dc17b633622e2a0cd070e62d094e5e94e655ed1c6c2b9373af577"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dnqn7Bjdw2NvIW03VRCq53RxtLNKE8K0rJvJwbVR2py72un2YyDJo/ENCrgWeqXgpjWMhrFiguUt8mxFTnzRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T20:19:25.436554Z","bundle_sha256":"a5ed64d8618b371fc8128e90f47f5c51867e96df89a618bc9104c98fffcf2b30"}}