{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:BG5HZHKSQSDIT3OAYMOAKUCSU2","short_pith_number":"pith:BG5HZHKS","canonical_record":{"source":{"id":"2312.03368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-12-06T09:09:27Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"2c090940e3dc0dde77c3a51558e8329be4d21f2c8e4a9ee2df83a9f80fab8665","abstract_canon_sha256":"425755eaccefec67260735d738f14e3cb1f1d638ad153c5b824f80bdc0838cbe"},"schema_version":"1.0"},"canonical_sha256":"09ba7c9d52848689edc0c31c055052a68486cdc36d463d1af471f7da84af13cc","source":{"kind":"arxiv","id":"2312.03368","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.03368","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"arxiv_version","alias_value":"2312.03368v1","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.03368","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_12","alias_value":"BG5HZHKSQSDI","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_16","alias_value":"BG5HZHKSQSDIT3OA","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_8","alias_value":"BG5HZHKS","created_at":"2026-07-05T07:21:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:BG5HZHKSQSDIT3OAYMOAKUCSU2","target":"record","payload":{"canonical_record":{"source":{"id":"2312.03368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-12-06T09:09:27Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"2c090940e3dc0dde77c3a51558e8329be4d21f2c8e4a9ee2df83a9f80fab8665","abstract_canon_sha256":"425755eaccefec67260735d738f14e3cb1f1d638ad153c5b824f80bdc0838cbe"},"schema_version":"1.0"},"canonical_sha256":"09ba7c9d52848689edc0c31c055052a68486cdc36d463d1af471f7da84af13cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:21:02.811378Z","signature_b64":"est9HSnZP6KB+W3n+jqe3E4miIahcG8d/Z0Gv04kyoZjqt2hFwRgnRbXo2Vw5PpY/xlGVEIknRhH9/qiJaXGDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09ba7c9d52848689edc0c31c055052a68486cdc36d463d1af471f7da84af13cc","last_reissued_at":"2026-07-05T07:21:02.810972Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:21:02.810972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.03368","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":"2026-07-05T07:21:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFtinJdvZ8NOO3ToAnvHg1DlvM6etFVY/TufNRBK7A38BUpxleqyF8CHOdVmbSgyaRNQXn0M3/BN5/BMs2usBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T21:57:06.753897Z"},"content_sha256":"e09e63c562cf6e5c29213e5f78905cd2eecf6174387fbd55e523ef845a102033","schema_version":"1.0","event_id":"sha256:e09e63c562cf6e5c29213e5f78905cd2eecf6174387fbd55e523ef845a102033"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:BG5HZHKSQSDIT3OAYMOAKUCSU2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bottom-Up Instance Segmentation of Catheters for Chest X-Rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Axel Saalbach, Francesca Boccardi, Heinrich Schulz, Ilyas Sirazitdinov, Samuele Salti","submitted_at":"2023-12-06T09:09:27Z","abstract_excerpt":"Chest X-ray (CXR) is frequently employed in emergency departments and intensive care units to verify the proper placement of central lines and tubes and to rule out related complications. The automation of the X-ray reading process can be a valuable support tool for non-specialist technicians and minimize reporting delays due to non-availability of experts. While existing solutions for automated catheter segmentation and malposition detection show promising results, the disentanglement of individual catheters remains an open challenge, especially in complex cases where multiple devices appear "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.03368","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/2312.03368/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":"2026-07-05T07:21:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WgKsAKiBLLE9Do9cwBQp+FP1LlhiiDmL4999o22Fdo2XQroAv61iz8AMdbXs9m45XjTfabaIChef5GaI9lUIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T21:57:06.754834Z"},"content_sha256":"d905560fe61df5a5a28466be7ecc7b226d308287880901e11b4543932f677b2c","schema_version":"1.0","event_id":"sha256:d905560fe61df5a5a28466be7ecc7b226d308287880901e11b4543932f677b2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/bundle.json","state_url":"https://pith.science/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/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":"2026-08-14T21:57:06Z","links":{"resolver":"https://pith.science/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2","bundle":"https://pith.science/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/bundle.json","state":"https://pith.science/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BG5HZHKSQSDIT3OAYMOAKUCSU2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:BG5HZHKSQSDIT3OAYMOAKUCSU2","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":"425755eaccefec67260735d738f14e3cb1f1d638ad153c5b824f80bdc0838cbe","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-12-06T09:09:27Z","title_canon_sha256":"2c090940e3dc0dde77c3a51558e8329be4d21f2c8e4a9ee2df83a9f80fab8665"},"schema_version":"1.0","source":{"id":"2312.03368","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.03368","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"arxiv_version","alias_value":"2312.03368v1","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.03368","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_12","alias_value":"BG5HZHKSQSDI","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_16","alias_value":"BG5HZHKSQSDIT3OA","created_at":"2026-07-05T07:21:02Z"},{"alias_kind":"pith_short_8","alias_value":"BG5HZHKS","created_at":"2026-07-05T07:21:02Z"}],"graph_snapshots":[{"event_id":"sha256:d905560fe61df5a5a28466be7ecc7b226d308287880901e11b4543932f677b2c","target":"graph","created_at":"2026-07-05T07:21:02Z","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/2312.03368/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Chest X-ray (CXR) is frequently employed in emergency departments and intensive care units to verify the proper placement of central lines and tubes and to rule out related complications. The automation of the X-ray reading process can be a valuable support tool for non-specialist technicians and minimize reporting delays due to non-availability of experts. While existing solutions for automated catheter segmentation and malposition detection show promising results, the disentanglement of individual catheters remains an open challenge, especially in complex cases where multiple devices appear ","authors_text":"Axel Saalbach, Francesca Boccardi, Heinrich Schulz, Ilyas Sirazitdinov, Samuele Salti","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-12-06T09:09:27Z","title":"Bottom-Up Instance Segmentation of Catheters for Chest X-Rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.03368","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:e09e63c562cf6e5c29213e5f78905cd2eecf6174387fbd55e523ef845a102033","target":"record","created_at":"2026-07-05T07:21:02Z","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":"425755eaccefec67260735d738f14e3cb1f1d638ad153c5b824f80bdc0838cbe","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-12-06T09:09:27Z","title_canon_sha256":"2c090940e3dc0dde77c3a51558e8329be4d21f2c8e4a9ee2df83a9f80fab8665"},"schema_version":"1.0","source":{"id":"2312.03368","kind":"arxiv","version":1}},"canonical_sha256":"09ba7c9d52848689edc0c31c055052a68486cdc36d463d1af471f7da84af13cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09ba7c9d52848689edc0c31c055052a68486cdc36d463d1af471f7da84af13cc","first_computed_at":"2026-07-05T07:21:02.810972Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:21:02.810972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"est9HSnZP6KB+W3n+jqe3E4miIahcG8d/Z0Gv04kyoZjqt2hFwRgnRbXo2Vw5PpY/xlGVEIknRhH9/qiJaXGDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:21:02.811378Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.03368","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e09e63c562cf6e5c29213e5f78905cd2eecf6174387fbd55e523ef845a102033","sha256:d905560fe61df5a5a28466be7ecc7b226d308287880901e11b4543932f677b2c"],"state_sha256":"18f706bcc83605b0d7316ef98b1b1eacdf4af1ad6ee9648235bb956b9b991858"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SysDizL8Kqf55fv9sR/3m09sK+5gqHBOzYl5z1/IcOeybFFn4UnR1qXY7ZKvaRlar3f4mgEMD3eridbUu+KyBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T21:57:06.760144Z","bundle_sha256":"01654c926850f1f287437d93549f15a899cc4c5325882bb80479158ef77723b9"}}