{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:V3WVJZOUKFCVCG465S6TBCABW6","short_pith_number":"pith:V3WVJZOU","canonical_record":{"source":{"id":"2605.20461","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T20:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"325271b75e594476a4691c60af94f8627dc4a91124f5c184a3b7d1a4ac823baa","abstract_canon_sha256":"03d859b2c2a10cfa035c4786bcbc72504dd70f80b9cae5f68c66a65d90db4975"},"schema_version":"1.0"},"canonical_sha256":"aeed54e5d45145511b9eecbd308801b79f3edccddf4792683632895d600dee14","source":{"kind":"arxiv","id":"2605.20461","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.20461","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2605.20461v1","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.20461","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"V3WVJZOUKFCV","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"V3WVJZOUKFCVCG46","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"V3WVJZOU","created_at":"2026-05-21T01:04:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:V3WVJZOUKFCVCG465S6TBCABW6","target":"record","payload":{"canonical_record":{"source":{"id":"2605.20461","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T20:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"325271b75e594476a4691c60af94f8627dc4a91124f5c184a3b7d1a4ac823baa","abstract_canon_sha256":"03d859b2c2a10cfa035c4786bcbc72504dd70f80b9cae5f68c66a65d90db4975"},"schema_version":"1.0"},"canonical_sha256":"aeed54e5d45145511b9eecbd308801b79f3edccddf4792683632895d600dee14","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T01:04:38.740406Z","signature_b64":"Eh+Q2qfzc9BTc8qNRNhzQgpBKssYrNyJivmIk50HCORhJtQIWgItRwWKPvHRmAmJU7iivHoa8i0vRs0W2EgCCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aeed54e5d45145511b9eecbd308801b79f3edccddf4792683632895d600dee14","last_reissued_at":"2026-05-21T01:04:38.739869Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T01:04:38.739869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.20461","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":"2026-05-21T01:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"42vFA8oRowq+vvkV5BKqhc096GINKQrI3Ea/eWmYELuN9+1uzOAzUPExVOzFHHFzIxF54xgOEvwrD9EzISSGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T22:51:16.725700Z"},"content_sha256":"66f48597af094c81ff9f2339bd400344e4fb8c69cd4bc07b56d03c26e3a6736c","schema_version":"1.0","event_id":"sha256:66f48597af094c81ff9f2339bd400344e4fb8c69cd4bc07b56d03c26e3a6736c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:V3WVJZOUKFCVCG465S6TBCABW6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Understanding Model Behavior in Monocular Polyp Sizing","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Andrea Dunn Beltran, Junmyeong Choi, Marc Niethammer, Roni Sengupta, Sarah K. McGill, Xinqi Xiong","submitted_at":"2026-05-19T20:14:14Z","abstract_excerpt":"Accurate polyp size stratification guides surveillance decisions, with lesions larger than 5 mm typically requiring closer follow-up. However, monocular colonoscopy lacks a reliable metric reference. We present a diagnostic audit of binary polyp size classification (<=5 mm vs. >5 mm) across multiple public multi-center datasets, model families, and patient-stratified cross-validation. Across architectures and input modalities, including RGB appearance, relative depth, and photometry, model performance is moderately consistent, suggesting reliance on cues correlated with examination behavior ra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.20461","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/2605.20461/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":"2026-05-21T01:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FYIPRDlmPl4eHk2QTcMrEGTgdkJm/2fSbDAX5jb8kylOkEDKWITbiIscc++lccR8eRdmX8cm6GL5WJQygFlgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T22:51:16.726361Z"},"content_sha256":"ffea572820c787bf055741c2c0761a236bbd9d595230bebea8fce8a76f70e605","schema_version":"1.0","event_id":"sha256:ffea572820c787bf055741c2c0761a236bbd9d595230bebea8fce8a76f70e605"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V3WVJZOUKFCVCG465S6TBCABW6/bundle.json","state_url":"https://pith.science/pith/V3WVJZOUKFCVCG465S6TBCABW6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V3WVJZOUKFCVCG465S6TBCABW6/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":"2026-05-24T22:51:16Z","links":{"resolver":"https://pith.science/pith/V3WVJZOUKFCVCG465S6TBCABW6","bundle":"https://pith.science/pith/V3WVJZOUKFCVCG465S6TBCABW6/bundle.json","state":"https://pith.science/pith/V3WVJZOUKFCVCG465S6TBCABW6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V3WVJZOUKFCVCG465S6TBCABW6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:V3WVJZOUKFCVCG465S6TBCABW6","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":"03d859b2c2a10cfa035c4786bcbc72504dd70f80b9cae5f68c66a65d90db4975","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T20:14:14Z","title_canon_sha256":"325271b75e594476a4691c60af94f8627dc4a91124f5c184a3b7d1a4ac823baa"},"schema_version":"1.0","source":{"id":"2605.20461","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.20461","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2605.20461v1","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.20461","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"V3WVJZOUKFCV","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"V3WVJZOUKFCVCG46","created_at":"2026-05-21T01:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"V3WVJZOU","created_at":"2026-05-21T01:04:38Z"}],"graph_snapshots":[{"event_id":"sha256:ffea572820c787bf055741c2c0761a236bbd9d595230bebea8fce8a76f70e605","target":"graph","created_at":"2026-05-21T01:04:38Z","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/2605.20461/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate polyp size stratification guides surveillance decisions, with lesions larger than 5 mm typically requiring closer follow-up. However, monocular colonoscopy lacks a reliable metric reference. We present a diagnostic audit of binary polyp size classification (<=5 mm vs. >5 mm) across multiple public multi-center datasets, model families, and patient-stratified cross-validation. Across architectures and input modalities, including RGB appearance, relative depth, and photometry, model performance is moderately consistent, suggesting reliance on cues correlated with examination behavior ra","authors_text":"Andrea Dunn Beltran, Junmyeong Choi, Marc Niethammer, Roni Sengupta, Sarah K. McGill, Xinqi Xiong","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T20:14:14Z","title":"Understanding Model Behavior in Monocular Polyp Sizing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.20461","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":"sha256:66f48597af094c81ff9f2339bd400344e4fb8c69cd4bc07b56d03c26e3a6736c","target":"record","created_at":"2026-05-21T01:04:38Z","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":"03d859b2c2a10cfa035c4786bcbc72504dd70f80b9cae5f68c66a65d90db4975","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T20:14:14Z","title_canon_sha256":"325271b75e594476a4691c60af94f8627dc4a91124f5c184a3b7d1a4ac823baa"},"schema_version":"1.0","source":{"id":"2605.20461","kind":"arxiv","version":1}},"canonical_sha256":"aeed54e5d45145511b9eecbd308801b79f3edccddf4792683632895d600dee14","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aeed54e5d45145511b9eecbd308801b79f3edccddf4792683632895d600dee14","first_computed_at":"2026-05-21T01:04:38.739869Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T01:04:38.739869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Eh+Q2qfzc9BTc8qNRNhzQgpBKssYrNyJivmIk50HCORhJtQIWgItRwWKPvHRmAmJU7iivHoa8i0vRs0W2EgCCA==","signature_status":"signed_v1","signed_at":"2026-05-21T01:04:38.740406Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.20461","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66f48597af094c81ff9f2339bd400344e4fb8c69cd4bc07b56d03c26e3a6736c","sha256:ffea572820c787bf055741c2c0761a236bbd9d595230bebea8fce8a76f70e605"],"state_sha256":"59a39bb5ef31c8d7396b26b10693265500835ed1fb2d8073943471e026aa2ac8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ipk6DPGMCVO9YpHXb2zQTrxG24AsbWFoEAn+wiXtseQ5mgqbY74oY6OLjxEkDTCOBIA+Wfn7B9VR+FgRYgTTDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T22:51:16.729786Z","bundle_sha256":"ef1c5ac5d97033fd75ef3cd2c36518a0c004fef38eab1168ffe81447fc091dc5"}}