{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:NCAHEI246MRXR5TQGY7GSSHMVS","short_pith_number":"pith:NCAHEI24","canonical_record":{"source":{"id":"1505.04231","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-16T02:13:17Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"bebacf623fc53f73cfeff7f1cc42c8f076e64571a5685688b575c7967ac05ed3","abstract_canon_sha256":"4cdf80d4432890903cac1f364770d06f4ebb97c6fdb8b6d1fd13196eb6f51923"},"schema_version":"1.0"},"canonical_sha256":"688072235cf32378f670363e6948ecacb34b02ba019341cc88ee578cfe00c5b7","source":{"kind":"arxiv","id":"1505.04231","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.04231","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"arxiv_version","alias_value":"1505.04231v1","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.04231","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"pith_short_12","alias_value":"NCAHEI246MRX","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"NCAHEI246MRXR5TQ","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"NCAHEI24","created_at":"2026-05-18T12:29:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:NCAHEI246MRXR5TQGY7GSSHMVS","target":"record","payload":{"canonical_record":{"source":{"id":"1505.04231","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-16T02:13:17Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"bebacf623fc53f73cfeff7f1cc42c8f076e64571a5685688b575c7967ac05ed3","abstract_canon_sha256":"4cdf80d4432890903cac1f364770d06f4ebb97c6fdb8b6d1fd13196eb6f51923"},"schema_version":"1.0"},"canonical_sha256":"688072235cf32378f670363e6948ecacb34b02ba019341cc88ee578cfe00c5b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:26.029495Z","signature_b64":"PwHwVx2pyvtEFr+1u0fQ5xMhG2gZWn6tNiIIF/FsViXVGwFNEeshtp1+Ee62bSh8bkJiPxcigeU3gy8HBBkZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"688072235cf32378f670363e6948ecacb34b02ba019341cc88ee578cfe00c5b7","last_reissued_at":"2026-05-18T02:07:26.029139Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:26.029139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.04231","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":"2026-05-18T02:07:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TPV4xK/6hzRd7PDt0rugWRrYPU045+nfakd1Fqp7QlTWkKBMD50aS3bzeMHt25tuMCEEv3eCZHGusUQId0Z3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:41:17.369968Z"},"content_sha256":"8ddf0b13aa7991bf45e7b062e6125ed3b017dcd2ba4a574c7dbe53f4380fef32","schema_version":"1.0","event_id":"sha256:8ddf0b13aa7991bf45e7b062e6125ed3b017dcd2ba4a574c7dbe53f4380fef32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:NCAHEI246MRXR5TQGY7GSSHMVS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantitative Morphological and Biochemical Studies on Human Downy Hairs using 3-D Quantitative Phase Imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.bio-ph","authors_text":"Heejae Shin, HyunJoo Park, Jongwon Yang, Kwanhong Ko, Kyoohyun Kim, Sangyun Lee, Sungjin Park, YongKeun Park, Yuhyun Lee","submitted_at":"2015-05-16T02:13:17Z","abstract_excerpt":"This study presents the morphological and biochemical findings on human downy arm hairs using 3-D quantitative phase imaging techniques. 3-D refractive index tomograms and high-resolution 2-D synthetic aperture images of individual downy arm hairs were measured using a Mach-Zehnder laser interferometric microscopy equipped with a two-axis galvanometer mirror. From the measured quantitative images, the biochemical and morphological parameters of downy hairs were non-invasively quantified including the mean refractive index, volume, cylinder, and effective radius of individual hairs. In addition"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.04231","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":""},"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":"2026-05-18T02:07:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SywtlMo/znXGzEqk4Z2gfk56gKvpiE7UAHW/RIT8U1L677M/BG+bMaS8hS53Q4EFmSLwKDKO7NEdVilfBdfPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:41:17.370646Z"},"content_sha256":"0c87fa2c23e4ee2ecbb3b7732f35e010532f6ae1e5d087c794d05b419b1db4e3","schema_version":"1.0","event_id":"sha256:0c87fa2c23e4ee2ecbb3b7732f35e010532f6ae1e5d087c794d05b419b1db4e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NCAHEI246MRXR5TQGY7GSSHMVS/bundle.json","state_url":"https://pith.science/pith/NCAHEI246MRXR5TQGY7GSSHMVS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NCAHEI246MRXR5TQGY7GSSHMVS/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":"2026-05-27T08:41:17Z","links":{"resolver":"https://pith.science/pith/NCAHEI246MRXR5TQGY7GSSHMVS","bundle":"https://pith.science/pith/NCAHEI246MRXR5TQGY7GSSHMVS/bundle.json","state":"https://pith.science/pith/NCAHEI246MRXR5TQGY7GSSHMVS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NCAHEI246MRXR5TQGY7GSSHMVS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:NCAHEI246MRXR5TQGY7GSSHMVS","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":"4cdf80d4432890903cac1f364770d06f4ebb97c6fdb8b6d1fd13196eb6f51923","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-16T02:13:17Z","title_canon_sha256":"bebacf623fc53f73cfeff7f1cc42c8f076e64571a5685688b575c7967ac05ed3"},"schema_version":"1.0","source":{"id":"1505.04231","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.04231","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"arxiv_version","alias_value":"1505.04231v1","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.04231","created_at":"2026-05-18T02:07:26Z"},{"alias_kind":"pith_short_12","alias_value":"NCAHEI246MRX","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"NCAHEI246MRXR5TQ","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"NCAHEI24","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:0c87fa2c23e4ee2ecbb3b7732f35e010532f6ae1e5d087c794d05b419b1db4e3","target":"graph","created_at":"2026-05-18T02:07:26Z","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":"This study presents the morphological and biochemical findings on human downy arm hairs using 3-D quantitative phase imaging techniques. 3-D refractive index tomograms and high-resolution 2-D synthetic aperture images of individual downy arm hairs were measured using a Mach-Zehnder laser interferometric microscopy equipped with a two-axis galvanometer mirror. From the measured quantitative images, the biochemical and morphological parameters of downy hairs were non-invasively quantified including the mean refractive index, volume, cylinder, and effective radius of individual hairs. In addition","authors_text":"Heejae Shin, HyunJoo Park, Jongwon Yang, Kwanhong Ko, Kyoohyun Kim, Sangyun Lee, Sungjin Park, YongKeun Park, Yuhyun Lee","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-16T02:13:17Z","title":"Quantitative Morphological and Biochemical Studies on Human Downy Hairs using 3-D Quantitative Phase Imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.04231","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":"sha256:8ddf0b13aa7991bf45e7b062e6125ed3b017dcd2ba4a574c7dbe53f4380fef32","target":"record","created_at":"2026-05-18T02:07:26Z","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":"4cdf80d4432890903cac1f364770d06f4ebb97c6fdb8b6d1fd13196eb6f51923","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-16T02:13:17Z","title_canon_sha256":"bebacf623fc53f73cfeff7f1cc42c8f076e64571a5685688b575c7967ac05ed3"},"schema_version":"1.0","source":{"id":"1505.04231","kind":"arxiv","version":1}},"canonical_sha256":"688072235cf32378f670363e6948ecacb34b02ba019341cc88ee578cfe00c5b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"688072235cf32378f670363e6948ecacb34b02ba019341cc88ee578cfe00c5b7","first_computed_at":"2026-05-18T02:07:26.029139Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:26.029139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PwHwVx2pyvtEFr+1u0fQ5xMhG2gZWn6tNiIIF/FsViXVGwFNEeshtp1+Ee62bSh8bkJiPxcigeU3gy8HBBkZAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:26.029495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.04231","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ddf0b13aa7991bf45e7b062e6125ed3b017dcd2ba4a574c7dbe53f4380fef32","sha256:0c87fa2c23e4ee2ecbb3b7732f35e010532f6ae1e5d087c794d05b419b1db4e3"],"state_sha256":"bf41f15d6318406ba5300f1adf65ba54a6cb2dc35d21c6a602833db1f1d3e932"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wLdCNdwACc/RobBHBVl3bGA1qFMTP/jV8Ii4rvyIHSQKvX4kkEDvHzyLpjEG/rpFQL3a9kflJ5IVWXL05fXKAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:41:17.373989Z","bundle_sha256":"20812c2c90c3c6f496b9dbd868b47183e2a59bd2b3bcd1d8fc2055379212fd09"}}