{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:V4MRYUPWRSQ4J2WJGRZPDIJ7KD","short_pith_number":"pith:V4MRYUPW","canonical_record":{"source":{"id":"1909.02664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-09-05T22:50:35Z","cross_cats_sorted":["physics.data-an","q-bio.TO","stat.AP"],"title_canon_sha256":"03aca3a113659432aae789a8a53bae111b8b99e7ac6e64728745222ed32a347f","abstract_canon_sha256":"de35178aba39ca02d1728252692869d5a499b1c23e6832312261489a6a815060"},"schema_version":"1.0"},"canonical_sha256":"af191c51f68ca1c4eac93472f1a13f50ef336ac6e4404d81eb72e5c0c9ec6ce6","source":{"kind":"arxiv","id":"1909.02664","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.02664","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"arxiv_version","alias_value":"1909.02664v1","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.02664","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_12","alias_value":"V4MRYUPWRSQ4","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_16","alias_value":"V4MRYUPWRSQ4J2WJ","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_8","alias_value":"V4MRYUPW","created_at":"2026-07-05T00:43:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:V4MRYUPWRSQ4J2WJGRZPDIJ7KD","target":"record","payload":{"canonical_record":{"source":{"id":"1909.02664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-09-05T22:50:35Z","cross_cats_sorted":["physics.data-an","q-bio.TO","stat.AP"],"title_canon_sha256":"03aca3a113659432aae789a8a53bae111b8b99e7ac6e64728745222ed32a347f","abstract_canon_sha256":"de35178aba39ca02d1728252692869d5a499b1c23e6832312261489a6a815060"},"schema_version":"1.0"},"canonical_sha256":"af191c51f68ca1c4eac93472f1a13f50ef336ac6e4404d81eb72e5c0c9ec6ce6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:43:55.833653Z","signature_b64":"O+vo26UCr6fyuJvQnCVwod1YUbgQD+bKuBf5FqPyS38pusUXpmfIIYjUdbJn2aQSKpdm75jePMla10DuJ+ueAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af191c51f68ca1c4eac93472f1a13f50ef336ac6e4404d81eb72e5c0c9ec6ce6","last_reissued_at":"2026-07-05T00:43:55.833160Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:43:55.833160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.02664","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":"2026-07-05T00:43:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mtgp0VJ1/aXLmkTmt7sYd0lufffSZ94Lso9oS2+mll5d3/s/H2Czwxz5R/mx9U50IHGmYI8yPzrJwAVucsHLDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:17:36.389498Z"},"content_sha256":"57a7dbcaf0840ddff3c1677dc3a080f670563a7247ae1a7cfdad92c2f965bc03","schema_version":"1.0","event_id":"sha256:57a7dbcaf0840ddff3c1677dc3a080f670563a7247ae1a7cfdad92c2f965bc03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:V4MRYUPWRSQ4J2WJGRZPDIJ7KD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Network-Based Approach for Modeling and Analyzing Coronary Angiography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.data-an","q-bio.TO","stat.AP"],"primary_cat":"q-bio.QM","authors_text":"Arash Ravandi, Babak Ravandi","submitted_at":"2019-09-05T22:50:35Z","abstract_excerpt":"Significant intra-observer and inter-observer variability in the interpretation of coronary angiograms are reported. This variability is in part due to the common practices that rely on performing visual inspections by specialists (e.g., the thickness of coronaries). Quantitative Coronary Angiography (QCA) approaches are emerging to minimize observer's error and furthermore perform predictions and analysis on angiography images. However, QCA approaches suffer from the same problem as they mainly rely on performing visual inspections by utilizing image processing techniques.\n  In this work, we "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.02664","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/1909.02664/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":"2026-07-05T00:43:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rTcVZE0p0ngR1a4bElJpDJjPqjrGVEY3dno0jVMNfYocO+w46n8xZrGN0In3jVAJbLn/r+COrpBpqoaSUEovBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:17:36.390282Z"},"content_sha256":"045c1d976bcea306292c044d8246a3a5ab18dc080678da8e75c417826e3b9b30","schema_version":"1.0","event_id":"sha256:045c1d976bcea306292c044d8246a3a5ab18dc080678da8e75c417826e3b9b30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/bundle.json","state_url":"https://pith.science/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/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":"2026-08-18T08:17:36Z","links":{"resolver":"https://pith.science/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD","bundle":"https://pith.science/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/bundle.json","state":"https://pith.science/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V4MRYUPWRSQ4J2WJGRZPDIJ7KD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:V4MRYUPWRSQ4J2WJGRZPDIJ7KD","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":"de35178aba39ca02d1728252692869d5a499b1c23e6832312261489a6a815060","cross_cats_sorted":["physics.data-an","q-bio.TO","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-09-05T22:50:35Z","title_canon_sha256":"03aca3a113659432aae789a8a53bae111b8b99e7ac6e64728745222ed32a347f"},"schema_version":"1.0","source":{"id":"1909.02664","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.02664","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"arxiv_version","alias_value":"1909.02664v1","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.02664","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_12","alias_value":"V4MRYUPWRSQ4","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_16","alias_value":"V4MRYUPWRSQ4J2WJ","created_at":"2026-07-05T00:43:55Z"},{"alias_kind":"pith_short_8","alias_value":"V4MRYUPW","created_at":"2026-07-05T00:43:55Z"}],"graph_snapshots":[{"event_id":"sha256:045c1d976bcea306292c044d8246a3a5ab18dc080678da8e75c417826e3b9b30","target":"graph","created_at":"2026-07-05T00:43:55Z","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/1909.02664/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Significant intra-observer and inter-observer variability in the interpretation of coronary angiograms are reported. This variability is in part due to the common practices that rely on performing visual inspections by specialists (e.g., the thickness of coronaries). Quantitative Coronary Angiography (QCA) approaches are emerging to minimize observer's error and furthermore perform predictions and analysis on angiography images. However, QCA approaches suffer from the same problem as they mainly rely on performing visual inspections by utilizing image processing techniques.\n  In this work, we ","authors_text":"Arash Ravandi, Babak Ravandi","cross_cats":["physics.data-an","q-bio.TO","stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-09-05T22:50:35Z","title":"Network-Based Approach for Modeling and Analyzing Coronary Angiography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.02664","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":"sha256:57a7dbcaf0840ddff3c1677dc3a080f670563a7247ae1a7cfdad92c2f965bc03","target":"record","created_at":"2026-07-05T00:43:55Z","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":"de35178aba39ca02d1728252692869d5a499b1c23e6832312261489a6a815060","cross_cats_sorted":["physics.data-an","q-bio.TO","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-09-05T22:50:35Z","title_canon_sha256":"03aca3a113659432aae789a8a53bae111b8b99e7ac6e64728745222ed32a347f"},"schema_version":"1.0","source":{"id":"1909.02664","kind":"arxiv","version":1}},"canonical_sha256":"af191c51f68ca1c4eac93472f1a13f50ef336ac6e4404d81eb72e5c0c9ec6ce6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af191c51f68ca1c4eac93472f1a13f50ef336ac6e4404d81eb72e5c0c9ec6ce6","first_computed_at":"2026-07-05T00:43:55.833160Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:43:55.833160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O+vo26UCr6fyuJvQnCVwod1YUbgQD+bKuBf5FqPyS38pusUXpmfIIYjUdbJn2aQSKpdm75jePMla10DuJ+ueAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:43:55.833653Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.02664","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57a7dbcaf0840ddff3c1677dc3a080f670563a7247ae1a7cfdad92c2f965bc03","sha256:045c1d976bcea306292c044d8246a3a5ab18dc080678da8e75c417826e3b9b30"],"state_sha256":"d74beec9ca35b66a56435563e6300f0ddd0ad157dda0bf8939b703d4288a1473"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m6ctbjpPkE9NI5+KWGnSbbkuD3bzSpubpFUjoVX4G7gqW3r2wueD9ERzMRETXgSPzyrNFIrrbkv1MnJNPj+RCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T08:17:36.395376Z","bundle_sha256":"68dd007c84fbf13b1fa614d9287eb2bc645d8c88861c9e014bf1cb8c3eeb106f"}}