{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:T6OJIXDRK45JGC3ODTKT2F3W2O","short_pith_number":"pith:T6OJIXDR","canonical_record":{"source":{"id":"2002.03369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-02-09T14:19:05Z","cross_cats_sorted":["eess.IV","physics.app-ph"],"title_canon_sha256":"8523be37e17763d58ead3083a90c1885d5cd659e2390f8c0bec19c8fbb661613","abstract_canon_sha256":"8207f52bd9e5c1c0237883298a3ad9478753e1212c4a9264b52cb3ca2494e151"},"schema_version":"1.0"},"canonical_sha256":"9f9c945c71573a930b6e1cd53d1776d3a7db49275ae4fedbaf505dc9378590c3","source":{"kind":"arxiv","id":"2002.03369","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.03369","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"2002.03369v1","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.03369","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"T6OJIXDRK45J","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_16","alias_value":"T6OJIXDRK45JGC3O","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_8","alias_value":"T6OJIXDR","created_at":"2026-07-05T01:48:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:T6OJIXDRK45JGC3ODTKT2F3W2O","target":"record","payload":{"canonical_record":{"source":{"id":"2002.03369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-02-09T14:19:05Z","cross_cats_sorted":["eess.IV","physics.app-ph"],"title_canon_sha256":"8523be37e17763d58ead3083a90c1885d5cd659e2390f8c0bec19c8fbb661613","abstract_canon_sha256":"8207f52bd9e5c1c0237883298a3ad9478753e1212c4a9264b52cb3ca2494e151"},"schema_version":"1.0"},"canonical_sha256":"9f9c945c71573a930b6e1cd53d1776d3a7db49275ae4fedbaf505dc9378590c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:48:25.795214Z","signature_b64":"U5uRQQ6ovlunIzhNqR5nMqk9HC5EV5T5UI6r1dz6T4rArTgkUDo8EUOHUG1OlnzPF9ComiAd1meFKH0sXFdfCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f9c945c71573a930b6e1cd53d1776d3a7db49275ae4fedbaf505dc9378590c3","last_reissued_at":"2026-07-05T01:48:25.794754Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:48:25.794754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.03369","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":"2026-07-05T01:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7vKPTcQGh7kO9E1EsV5Bl50FDaLyls9caBUHiVN9bMX99Fv6YQggPtFnNx2XwkukdsLoOY3SEC5kIBqq2JkgAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T02:56:35.900625Z"},"content_sha256":"fe6c11cd887ec0962731b2f560f12ef2d8f6394de26164585ba75eafb941767b","schema_version":"1.0","event_id":"sha256:fe6c11cd887ec0962731b2f560f12ef2d8f6394de26164585ba75eafb941767b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:T6OJIXDRK45JGC3ODTKT2F3W2O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lensless in-line holographic microscopy with light source of low spatio-temporal coherence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV","physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Manjunatha Mahadevappa, Pranab Kumar Dutta, Sanjeev Kumar","submitted_at":"2020-02-09T14:19:05Z","abstract_excerpt":"Lensless microscopy with coherent or partially coherent light sources is a well known imaging technique, commonly referred as digital in-line holographic microscopy. In the established methods, both the spatial and temporal coherence of light play a crucial role in determining the resolution of reconstructed object. We report lensless microscopy with a spatially extended white LED, a light source of low spatial and very low temporal coherence. The wave-field propagation between two parallel planes can be obtained using a convolution operation, where the convolution kernel depends on the object"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.03369","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/2002.03369/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":"2026-07-05T01:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IBRhvXLDzM1ambBQPMT7LnQLIsJBbjPNdQE7VmsBly/oeD1+29qXjM8qu49+AsxvIQUaJESsIlMOhd9Fy090Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T02:56:35.901145Z"},"content_sha256":"6598eb5f1b9deafc0ae40b5c72fa1905f809ca7711234e86c05db5158def3787","schema_version":"1.0","event_id":"sha256:6598eb5f1b9deafc0ae40b5c72fa1905f809ca7711234e86c05db5158def3787"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/bundle.json","state_url":"https://pith.science/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/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":"2026-08-14T02:56:35Z","links":{"resolver":"https://pith.science/pith/T6OJIXDRK45JGC3ODTKT2F3W2O","bundle":"https://pith.science/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/bundle.json","state":"https://pith.science/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T6OJIXDRK45JGC3ODTKT2F3W2O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:T6OJIXDRK45JGC3ODTKT2F3W2O","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":"8207f52bd9e5c1c0237883298a3ad9478753e1212c4a9264b52cb3ca2494e151","cross_cats_sorted":["eess.IV","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-02-09T14:19:05Z","title_canon_sha256":"8523be37e17763d58ead3083a90c1885d5cd659e2390f8c0bec19c8fbb661613"},"schema_version":"1.0","source":{"id":"2002.03369","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.03369","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"2002.03369v1","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.03369","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"T6OJIXDRK45J","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_16","alias_value":"T6OJIXDRK45JGC3O","created_at":"2026-07-05T01:48:25Z"},{"alias_kind":"pith_short_8","alias_value":"T6OJIXDR","created_at":"2026-07-05T01:48:25Z"}],"graph_snapshots":[{"event_id":"sha256:6598eb5f1b9deafc0ae40b5c72fa1905f809ca7711234e86c05db5158def3787","target":"graph","created_at":"2026-07-05T01:48:25Z","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/2002.03369/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Lensless microscopy with coherent or partially coherent light sources is a well known imaging technique, commonly referred as digital in-line holographic microscopy. In the established methods, both the spatial and temporal coherence of light play a crucial role in determining the resolution of reconstructed object. We report lensless microscopy with a spatially extended white LED, a light source of low spatial and very low temporal coherence. The wave-field propagation between two parallel planes can be obtained using a convolution operation, where the convolution kernel depends on the object","authors_text":"Manjunatha Mahadevappa, Pranab Kumar Dutta, Sanjeev Kumar","cross_cats":["eess.IV","physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-02-09T14:19:05Z","title":"Lensless in-line holographic microscopy with light source of low spatio-temporal coherence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.03369","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:fe6c11cd887ec0962731b2f560f12ef2d8f6394de26164585ba75eafb941767b","target":"record","created_at":"2026-07-05T01:48:25Z","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":"8207f52bd9e5c1c0237883298a3ad9478753e1212c4a9264b52cb3ca2494e151","cross_cats_sorted":["eess.IV","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-02-09T14:19:05Z","title_canon_sha256":"8523be37e17763d58ead3083a90c1885d5cd659e2390f8c0bec19c8fbb661613"},"schema_version":"1.0","source":{"id":"2002.03369","kind":"arxiv","version":1}},"canonical_sha256":"9f9c945c71573a930b6e1cd53d1776d3a7db49275ae4fedbaf505dc9378590c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f9c945c71573a930b6e1cd53d1776d3a7db49275ae4fedbaf505dc9378590c3","first_computed_at":"2026-07-05T01:48:25.794754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:48:25.794754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U5uRQQ6ovlunIzhNqR5nMqk9HC5EV5T5UI6r1dz6T4rArTgkUDo8EUOHUG1OlnzPF9ComiAd1meFKH0sXFdfCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:48:25.795214Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.03369","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe6c11cd887ec0962731b2f560f12ef2d8f6394de26164585ba75eafb941767b","sha256:6598eb5f1b9deafc0ae40b5c72fa1905f809ca7711234e86c05db5158def3787"],"state_sha256":"428b3e4d51b67ab157024a5a4505b76178a2d2fcd7cc2ce236db8f8dccaf46c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bhCPpvbGJExBEX7+hJcGGfZy7yyYS7fP93ISR2lY+XkDX33wffVCjCIjpg6NBdRhEQXNhDzJ0piaacKtX6NMDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T02:56:35.905806Z","bundle_sha256":"8a938cc7bb8258ef975ab77fa29903e61ece7d1fe971f3ba29338bbba7ed0df9"}}