{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:TTX6CUXSLQXULQVJPVSBMMQS2R","short_pith_number":"pith:TTX6CUXS","canonical_record":{"source":{"id":"2008.10308","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-24T10:29:38Z","cross_cats_sorted":[],"title_canon_sha256":"44482a7ca555bade1cb52699259a5b4da932c7db66f8a6e1cda51d59c6566bb7","abstract_canon_sha256":"c1e269f13375ea9ab9e97711bb1afc3d31ac11f84a4fd02a185f28354c8411b5"},"schema_version":"1.0"},"canonical_sha256":"9cefe152f25c2f45c2a97d64163212d46622060480a25b6e9070bb1bf02b00ad","source":{"kind":"arxiv","id":"2008.10308","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.10308","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"2008.10308v1","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.10308","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"TTX6CUXSLQXU","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"TTX6CUXSLQXULQVJ","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"TTX6CUXS","created_at":"2026-07-05T01:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:TTX6CUXSLQXULQVJPVSBMMQS2R","target":"record","payload":{"canonical_record":{"source":{"id":"2008.10308","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-24T10:29:38Z","cross_cats_sorted":[],"title_canon_sha256":"44482a7ca555bade1cb52699259a5b4da932c7db66f8a6e1cda51d59c6566bb7","abstract_canon_sha256":"c1e269f13375ea9ab9e97711bb1afc3d31ac11f84a4fd02a185f28354c8411b5"},"schema_version":"1.0"},"canonical_sha256":"9cefe152f25c2f45c2a97d64163212d46622060480a25b6e9070bb1bf02b00ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:29:22.518380Z","signature_b64":"txyWwnoaPsCl1iX4wlCqtk2l4TUbmGWtOBE7/EOjU5Cl6GvCPIbVv5+0itW2HY/EHZqoFWZl0DUQ5K9BiPgaAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9cefe152f25c2f45c2a97d64163212d46622060480a25b6e9070bb1bf02b00ad","last_reissued_at":"2026-07-05T01:29:22.517868Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:29:22.517868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.10308","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":"2026-07-05T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dqR+vhamaB3xatAng98s9UmUZ37ycCr/U6P56lj7PqBAGpYNSwwboVqyWS59R52yQP/Nf5dtE6/clZCcaXviBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:52:00.982411Z"},"content_sha256":"76167fa079bb57dd009feda5ba5a36a2e4283e3258ec36ae89c3c45aa4ec9225","schema_version":"1.0","event_id":"sha256:76167fa079bb57dd009feda5ba5a36a2e4283e3258ec36ae89c3c45aa4ec9225"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:TTX6CUXSLQXULQVJPVSBMMQS2R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scatting theory for reflective Fourier ptychographic diffraction tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Shuhe Zhang, Shuo Zhang, Tos Berendschot","submitted_at":"2020-08-24T10:29:38Z","abstract_excerpt":"A forward model is presented to an inverse scattering problem that arises in the application of reflective Fourier ptychographic microscopy. The model allows us to determine the 3D distributions of refractive index for weakly scattering semi-transparent objects using Fourier ptychographic tomography. The derivation results show that both transmission types reported previously and reflective type present in this article are corresponding to a specific application in Wolf's work (Emil Wolf, Opt. Commun. 1969 1(4) pp. 153-156). The transmission type measures the forward scattering field while the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.10308","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/2008.10308/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":"2026-07-05T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"51+mwZ0Jr6LwcJM2bpKomk0S8W/W1X6zPAFYfJnW0lU5DY+H5sjlUfaiwiAOz6gVPf34m1hHkbYnXxSvYSkUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:52:00.982780Z"},"content_sha256":"854a883ff828417280c77fe485cbfb509b866f6274062c64fa53b79d52916f01","schema_version":"1.0","event_id":"sha256:854a883ff828417280c77fe485cbfb509b866f6274062c64fa53b79d52916f01"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/bundle.json","state_url":"https://pith.science/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/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":"2026-07-07T03:52:00Z","links":{"resolver":"https://pith.science/pith/TTX6CUXSLQXULQVJPVSBMMQS2R","bundle":"https://pith.science/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/bundle.json","state":"https://pith.science/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TTX6CUXSLQXULQVJPVSBMMQS2R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:TTX6CUXSLQXULQVJPVSBMMQS2R","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":"c1e269f13375ea9ab9e97711bb1afc3d31ac11f84a4fd02a185f28354c8411b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-24T10:29:38Z","title_canon_sha256":"44482a7ca555bade1cb52699259a5b4da932c7db66f8a6e1cda51d59c6566bb7"},"schema_version":"1.0","source":{"id":"2008.10308","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.10308","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"2008.10308v1","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.10308","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"TTX6CUXSLQXU","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"TTX6CUXSLQXULQVJ","created_at":"2026-07-05T01:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"TTX6CUXS","created_at":"2026-07-05T01:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:854a883ff828417280c77fe485cbfb509b866f6274062c64fa53b79d52916f01","target":"graph","created_at":"2026-07-05T01:29:22Z","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/2008.10308/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A forward model is presented to an inverse scattering problem that arises in the application of reflective Fourier ptychographic microscopy. The model allows us to determine the 3D distributions of refractive index for weakly scattering semi-transparent objects using Fourier ptychographic tomography. The derivation results show that both transmission types reported previously and reflective type present in this article are corresponding to a specific application in Wolf's work (Emil Wolf, Opt. Commun. 1969 1(4) pp. 153-156). The transmission type measures the forward scattering field while the","authors_text":"Shuhe Zhang, Shuo Zhang, Tos Berendschot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-24T10:29:38Z","title":"Scatting theory for reflective Fourier ptychographic diffraction tomography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.10308","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":"sha256:76167fa079bb57dd009feda5ba5a36a2e4283e3258ec36ae89c3c45aa4ec9225","target":"record","created_at":"2026-07-05T01:29:22Z","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":"c1e269f13375ea9ab9e97711bb1afc3d31ac11f84a4fd02a185f28354c8411b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-24T10:29:38Z","title_canon_sha256":"44482a7ca555bade1cb52699259a5b4da932c7db66f8a6e1cda51d59c6566bb7"},"schema_version":"1.0","source":{"id":"2008.10308","kind":"arxiv","version":1}},"canonical_sha256":"9cefe152f25c2f45c2a97d64163212d46622060480a25b6e9070bb1bf02b00ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cefe152f25c2f45c2a97d64163212d46622060480a25b6e9070bb1bf02b00ad","first_computed_at":"2026-07-05T01:29:22.517868Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:29:22.517868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"txyWwnoaPsCl1iX4wlCqtk2l4TUbmGWtOBE7/EOjU5Cl6GvCPIbVv5+0itW2HY/EHZqoFWZl0DUQ5K9BiPgaAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:29:22.518380Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.10308","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76167fa079bb57dd009feda5ba5a36a2e4283e3258ec36ae89c3c45aa4ec9225","sha256:854a883ff828417280c77fe485cbfb509b866f6274062c64fa53b79d52916f01"],"state_sha256":"3aa4f262d691c1fd0fa3b0af143022f6a1806fd15dc810619baf3548a6a398ce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PwwleavzrEanwqZv3ebaFqMQYeoJ6v5dIj3ZP2BfhAGoUL5kNAdTUIcz5KamyH3nad9FbS6Ypv9vrcjRvgZPBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T03:52:00.984805Z","bundle_sha256":"32f59df890a8bb8bb49c891ef94813b46e18af18505be1eca0afed29baa3c281"}}