{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MQZUIMEOK2L7YP6SHQKFY6P7NR","short_pith_number":"pith:MQZUIMEO","canonical_record":{"source":{"id":"1912.07709","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-12-16T21:22:23Z","cross_cats_sorted":["eess.IV","physics.comp-ph","physics.optics"],"title_canon_sha256":"a46e772378bd8dba719807a43f2e59f55f11f105694e044e1ce1b52b10375dec","abstract_canon_sha256":"1bceda33c828e86623ffff431fc8017a4bfdcb02fd634cf02e4543dc273497c9"},"schema_version":"1.0"},"canonical_sha256":"643344308e5697fc3fd23c145c79ff6c5727cd211cef8d066e96b6f15d4cd335","source":{"kind":"arxiv","id":"1912.07709","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.07709","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"arxiv_version","alias_value":"1912.07709v1","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.07709","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_12","alias_value":"MQZUIMEOK2L7","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_16","alias_value":"MQZUIMEOK2L7YP6S","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_8","alias_value":"MQZUIMEO","created_at":"2026-07-05T00:26:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MQZUIMEOK2L7YP6SHQKFY6P7NR","target":"record","payload":{"canonical_record":{"source":{"id":"1912.07709","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-12-16T21:22:23Z","cross_cats_sorted":["eess.IV","physics.comp-ph","physics.optics"],"title_canon_sha256":"a46e772378bd8dba719807a43f2e59f55f11f105694e044e1ce1b52b10375dec","abstract_canon_sha256":"1bceda33c828e86623ffff431fc8017a4bfdcb02fd634cf02e4543dc273497c9"},"schema_version":"1.0"},"canonical_sha256":"643344308e5697fc3fd23c145c79ff6c5727cd211cef8d066e96b6f15d4cd335","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:26:25.307211Z","signature_b64":"cSRytvmieOwtg+cYGMzJwsZexLhlPKE4/1A9dQMiue7so1holFyysp+HKZo3/bBKcuE8lH0qfnnhf6YR2XXqDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"643344308e5697fc3fd23c145c79ff6c5727cd211cef8d066e96b6f15d4cd335","last_reissued_at":"2026-07-05T00:26:25.306667Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:26:25.306667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.07709","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":"2026-07-05T00:26:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EwZ6cEfofcpl3rB3ml8BePX0bP9w7hLUf98B4q/iYU8SVn6c3t0sFzO0G4JRD4CExVVRnIKl6lrtV9AYaElICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:18:30.752658Z"},"content_sha256":"2cdb09cac5b9c8fe4f5fa171c062cf2d34aad3c073830e2c3e81e5f03990a30b","schema_version":"1.0","event_id":"sha256:2cdb09cac5b9c8fe4f5fa171c062cf2d34aad3c073830e2c3e81e5f03990a30b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MQZUIMEOK2L7YP6SHQKFY6P7NR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inverse scattering for reflection intensity phase microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV","physics.comp-ph","physics.optics"],"primary_cat":"q-bio.QM","authors_text":"Alex Matlock, Anne Sentenac, Ji Yi, Lei Tian, Patrick C. Chaumet","submitted_at":"2019-12-16T21:22:23Z","abstract_excerpt":"Reflection phase imaging provides label-free, high-resolution characterization of biological samples, typically using interferometric-based techniques. Here, we investigate reflection phase microscopy from intensity-only measurements under diverse illumination. We evaluate the forward and inverse scattering model based on the first Born approximation for imaging scattering objects above a glass slide. Under this design, the measured field combines linear forward-scattering and height-dependent nonlinear back-scattering from the object that complicates object phase recovery. Using only the forw"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.07709","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/1912.07709/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":"2026-07-05T00:26:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oaxknvDRNFeo4mV6K1L5RuWD9FZLoE1YnHWEeTxFay4lvS323rG4BMSNWt5151j5zq5T4PmzgpcsCz5i+v2GDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:18:30.753627Z"},"content_sha256":"9bd0db098f4d39ffea7984de5818e99997b7e3f33e074814565ad03343eb1711","schema_version":"1.0","event_id":"sha256:9bd0db098f4d39ffea7984de5818e99997b7e3f33e074814565ad03343eb1711"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/bundle.json","state_url":"https://pith.science/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/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":"2026-08-01T05:18:30Z","links":{"resolver":"https://pith.science/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR","bundle":"https://pith.science/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/bundle.json","state":"https://pith.science/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MQZUIMEOK2L7YP6SHQKFY6P7NR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MQZUIMEOK2L7YP6SHQKFY6P7NR","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":"1bceda33c828e86623ffff431fc8017a4bfdcb02fd634cf02e4543dc273497c9","cross_cats_sorted":["eess.IV","physics.comp-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-12-16T21:22:23Z","title_canon_sha256":"a46e772378bd8dba719807a43f2e59f55f11f105694e044e1ce1b52b10375dec"},"schema_version":"1.0","source":{"id":"1912.07709","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.07709","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"arxiv_version","alias_value":"1912.07709v1","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.07709","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_12","alias_value":"MQZUIMEOK2L7","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_16","alias_value":"MQZUIMEOK2L7YP6S","created_at":"2026-07-05T00:26:25Z"},{"alias_kind":"pith_short_8","alias_value":"MQZUIMEO","created_at":"2026-07-05T00:26:25Z"}],"graph_snapshots":[{"event_id":"sha256:9bd0db098f4d39ffea7984de5818e99997b7e3f33e074814565ad03343eb1711","target":"graph","created_at":"2026-07-05T00:26:25Z","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/1912.07709/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reflection phase imaging provides label-free, high-resolution characterization of biological samples, typically using interferometric-based techniques. Here, we investigate reflection phase microscopy from intensity-only measurements under diverse illumination. We evaluate the forward and inverse scattering model based on the first Born approximation for imaging scattering objects above a glass slide. Under this design, the measured field combines linear forward-scattering and height-dependent nonlinear back-scattering from the object that complicates object phase recovery. Using only the forw","authors_text":"Alex Matlock, Anne Sentenac, Ji Yi, Lei Tian, Patrick C. Chaumet","cross_cats":["eess.IV","physics.comp-ph","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-12-16T21:22:23Z","title":"Inverse scattering for reflection intensity phase microscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.07709","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":"sha256:2cdb09cac5b9c8fe4f5fa171c062cf2d34aad3c073830e2c3e81e5f03990a30b","target":"record","created_at":"2026-07-05T00:26:25Z","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":"1bceda33c828e86623ffff431fc8017a4bfdcb02fd634cf02e4543dc273497c9","cross_cats_sorted":["eess.IV","physics.comp-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-12-16T21:22:23Z","title_canon_sha256":"a46e772378bd8dba719807a43f2e59f55f11f105694e044e1ce1b52b10375dec"},"schema_version":"1.0","source":{"id":"1912.07709","kind":"arxiv","version":1}},"canonical_sha256":"643344308e5697fc3fd23c145c79ff6c5727cd211cef8d066e96b6f15d4cd335","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"643344308e5697fc3fd23c145c79ff6c5727cd211cef8d066e96b6f15d4cd335","first_computed_at":"2026-07-05T00:26:25.306667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:26:25.306667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cSRytvmieOwtg+cYGMzJwsZexLhlPKE4/1A9dQMiue7so1holFyysp+HKZo3/bBKcuE8lH0qfnnhf6YR2XXqDA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:26:25.307211Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.07709","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cdb09cac5b9c8fe4f5fa171c062cf2d34aad3c073830e2c3e81e5f03990a30b","sha256:9bd0db098f4d39ffea7984de5818e99997b7e3f33e074814565ad03343eb1711"],"state_sha256":"39a8b753a47654a94f4d5cc8420fcddd2b474bd0a5ce56cc0f1c513140d3a9c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QJeY9KO7LOyJ284iikgD3rz6FeKmRZOebEN2/YVFClRdQS/ZU6K395V9CmFA033/Il4PIFb70YOl7HBDGRbvCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T05:18:30.758674Z","bundle_sha256":"f88146a1518209984e88d56e207c51c33b49cc7ea97255054decee7bfc09ce06"}}