{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:743RHIAHMUZIANO6MMZ4D2TRPF","short_pith_number":"pith:743RHIAH","canonical_record":{"source":{"id":"1509.08918","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-09-24T06:01:37Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e3469d398fefd97257f94ab1d74dee2a33d33e6d468c76665539417218a9233e","abstract_canon_sha256":"fdae3153e8c68ad4d982e147b6347cc1b07247e679c06ec5a81754cfd3d00c09"},"schema_version":"1.0"},"canonical_sha256":"ff3713a00765328035de6333c1ea717953e8a5745bd47bb848cd17cee4fcdc4e","source":{"kind":"arxiv","id":"1509.08918","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08918","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08918v2","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08918","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"743RHIAHMUZI","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"743RHIAHMUZIANO6","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"743RHIAH","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:743RHIAHMUZIANO6MMZ4D2TRPF","target":"record","payload":{"canonical_record":{"source":{"id":"1509.08918","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-09-24T06:01:37Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e3469d398fefd97257f94ab1d74dee2a33d33e6d468c76665539417218a9233e","abstract_canon_sha256":"fdae3153e8c68ad4d982e147b6347cc1b07247e679c06ec5a81754cfd3d00c09"},"schema_version":"1.0"},"canonical_sha256":"ff3713a00765328035de6333c1ea717953e8a5745bd47bb848cd17cee4fcdc4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:56.855097Z","signature_b64":"Y5y5e+n54FieoqcbBmA14zug40jRDLeK1a2nZc/L3MuSqzB5gjfgHDu4aAkdaUIzfZGPWsDoYXdQJ4XOGEHHDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff3713a00765328035de6333c1ea717953e8a5745bd47bb848cd17cee4fcdc4e","last_reissued_at":"2026-05-18T01:27:56.854261Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:56.854261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.08918","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ETgrdMiAS4UMx4PmSNCD/wDDX0GTRRiZWHVIuNWCDEAN0q/SLnXTW/6e5Sa81WRf3scuSMBdOVxDXRW7dD1xBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:30:38.154981Z"},"content_sha256":"b88631831df660b68a795650c6c26e54e67079b91e960288d75094e97fad3fe3","schema_version":"1.0","event_id":"sha256:b88631831df660b68a795650c6c26e54e67079b91e960288d75094e97fad3fe3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:743RHIAHMUZIANO6MMZ4D2TRPF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Statistical analysis of motion contrast in optical coherence tomography angiography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.bio-ph","authors_text":"Cong Pan, Li Guo, Peng Li, Tianyu Hong, Tongtong Lu, Yuxuan Cheng, Zhihua Ding","submitted_at":"2015-09-24T06:01:37Z","abstract_excerpt":"Optical coherence tomography angiography (Angio-OCT), mainly based on the temporal dynamics of OCT scattering signals, has found a range of potential applications in clinical and scientific research. Based on the model of random phasor sums, temporal statistics of the complex-valued OCT signals are mathematically described. Statistical distributions of the amplitude differential and complex differential Angio-OCT signals are derived. The theories are validated through the flow phantom and live animal experiments. Using the model developed, the origin of the motion contrast in Angio-OCT is math"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08918","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Wp1Kv/xs95LNhGtdvb+Fr4ChRrasuD0EwR4Tfy/HeAAAMsDKOzO9COz8MMtG0CHcWNdQAeDTDgdLOtaRNRGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:30:38.155375Z"},"content_sha256":"d9fbe452f14bb8acb842c2d90fcbdc2f084e8d994c68cde94b8e8845e9464537","schema_version":"1.0","event_id":"sha256:d9fbe452f14bb8acb842c2d90fcbdc2f084e8d994c68cde94b8e8845e9464537"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/743RHIAHMUZIANO6MMZ4D2TRPF/bundle.json","state_url":"https://pith.science/pith/743RHIAHMUZIANO6MMZ4D2TRPF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/743RHIAHMUZIANO6MMZ4D2TRPF/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":"2026-05-28T00:30:38Z","links":{"resolver":"https://pith.science/pith/743RHIAHMUZIANO6MMZ4D2TRPF","bundle":"https://pith.science/pith/743RHIAHMUZIANO6MMZ4D2TRPF/bundle.json","state":"https://pith.science/pith/743RHIAHMUZIANO6MMZ4D2TRPF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/743RHIAHMUZIANO6MMZ4D2TRPF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:743RHIAHMUZIANO6MMZ4D2TRPF","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":"fdae3153e8c68ad4d982e147b6347cc1b07247e679c06ec5a81754cfd3d00c09","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-09-24T06:01:37Z","title_canon_sha256":"e3469d398fefd97257f94ab1d74dee2a33d33e6d468c76665539417218a9233e"},"schema_version":"1.0","source":{"id":"1509.08918","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08918","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08918v2","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08918","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"743RHIAHMUZI","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"743RHIAHMUZIANO6","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"743RHIAH","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:d9fbe452f14bb8acb842c2d90fcbdc2f084e8d994c68cde94b8e8845e9464537","target":"graph","created_at":"2026-05-18T01:27:56Z","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"},"paper":{"abstract_excerpt":"Optical coherence tomography angiography (Angio-OCT), mainly based on the temporal dynamics of OCT scattering signals, has found a range of potential applications in clinical and scientific research. Based on the model of random phasor sums, temporal statistics of the complex-valued OCT signals are mathematically described. Statistical distributions of the amplitude differential and complex differential Angio-OCT signals are derived. The theories are validated through the flow phantom and live animal experiments. Using the model developed, the origin of the motion contrast in Angio-OCT is math","authors_text":"Cong Pan, Li Guo, Peng Li, Tianyu Hong, Tongtong Lu, Yuxuan Cheng, Zhihua Ding","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-09-24T06:01:37Z","title":"Statistical analysis of motion contrast in optical coherence tomography angiography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08918","kind":"arxiv","version":2},"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:b88631831df660b68a795650c6c26e54e67079b91e960288d75094e97fad3fe3","target":"record","created_at":"2026-05-18T01:27:56Z","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":"fdae3153e8c68ad4d982e147b6347cc1b07247e679c06ec5a81754cfd3d00c09","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-09-24T06:01:37Z","title_canon_sha256":"e3469d398fefd97257f94ab1d74dee2a33d33e6d468c76665539417218a9233e"},"schema_version":"1.0","source":{"id":"1509.08918","kind":"arxiv","version":2}},"canonical_sha256":"ff3713a00765328035de6333c1ea717953e8a5745bd47bb848cd17cee4fcdc4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff3713a00765328035de6333c1ea717953e8a5745bd47bb848cd17cee4fcdc4e","first_computed_at":"2026-05-18T01:27:56.854261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:56.854261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y5y5e+n54FieoqcbBmA14zug40jRDLeK1a2nZc/L3MuSqzB5gjfgHDu4aAkdaUIzfZGPWsDoYXdQJ4XOGEHHDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:56.855097Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.08918","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b88631831df660b68a795650c6c26e54e67079b91e960288d75094e97fad3fe3","sha256:d9fbe452f14bb8acb842c2d90fcbdc2f084e8d994c68cde94b8e8845e9464537"],"state_sha256":"fdc65560071b56a7eb77e851b62e8ec424854897fcbee0a19536296f0731f7b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JwvD/NXlOKWeFdeOeFjgfbtp2Go1Grox2Pk2NLJaeMAy28Akak28lONKM3o5UwQU4s0RV2/Mau1WYwsPcrzmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:30:38.157631Z","bundle_sha256":"8751b60cc312030175f4a57f491dfd785c5cd562301a137545eef526b01c967f"}}