{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:PLRUGSEFT3REDIZJ6LYMTRJIX4","short_pith_number":"pith:PLRUGSEF","canonical_record":{"source":{"id":"2212.08763","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2022-12-17T00:19:18Z","cross_cats_sorted":[],"title_canon_sha256":"7ffac036670fd1f12d77ae01ae28cdde8754b7d971d5fdca4facc07d5b8b46d1","abstract_canon_sha256":"d360a5e1c2dbcf46e7e83d118b5724c9b6e9822c0524897690678406154a8896"},"schema_version":"1.0"},"canonical_sha256":"7ae34348859ee241a329f2f0c9c528bf1dac9f5016e96103248798d2cef5158f","source":{"kind":"arxiv","id":"2212.08763","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.08763","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"arxiv_version","alias_value":"2212.08763v2","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.08763","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_12","alias_value":"PLRUGSEFT3RE","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_16","alias_value":"PLRUGSEFT3REDIZJ","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_8","alias_value":"PLRUGSEF","created_at":"2026-07-05T05:30:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:PLRUGSEFT3REDIZJ6LYMTRJIX4","target":"record","payload":{"canonical_record":{"source":{"id":"2212.08763","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2022-12-17T00:19:18Z","cross_cats_sorted":[],"title_canon_sha256":"7ffac036670fd1f12d77ae01ae28cdde8754b7d971d5fdca4facc07d5b8b46d1","abstract_canon_sha256":"d360a5e1c2dbcf46e7e83d118b5724c9b6e9822c0524897690678406154a8896"},"schema_version":"1.0"},"canonical_sha256":"7ae34348859ee241a329f2f0c9c528bf1dac9f5016e96103248798d2cef5158f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:30:33.672557Z","signature_b64":"O8umTNyy/+58OC9eBt5iM1aRgyFPDkGNKo9jTnjbI5Px4u5erAb/PVx6GSdLBV4CzHh7U79tM47hDwmyFU7qDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ae34348859ee241a329f2f0c9c528bf1dac9f5016e96103248798d2cef5158f","last_reissued_at":"2026-07-05T05:30:33.672102Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:30:33.672102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.08763","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":"2026-07-05T05:30:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pCeQ/dw9mYPqGTj3NH3C3wQcgzkTb2OcK+XRq+1G+4SWgfHePnnm4L60a6E+lL6q3A76mYvAwa3ceLoYH4e+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:48:43.766665Z"},"content_sha256":"1f3c0f6f1efc408c8d8f4c70562e3a852f0d431627980c8ac7712ce618f92fa2","schema_version":"1.0","event_id":"sha256:1f3c0f6f1efc408c8d8f4c70562e3a852f0d431627980c8ac7712ce618f92fa2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:PLRUGSEFT3REDIZJ6LYMTRJIX4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Experimental Double-Integrating Sphere Spectrophotometer for In Vitro Optical Analysis of Blood and Tissue Samples, Including Examples of Analyte Measurement Results","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Barry K. Gilbert, Clifton R. Haider, Daniel J. Schwab, Gary S. Delp, Stefan K. Grebe","submitted_at":"2022-12-17T00:19:18Z","abstract_excerpt":"Data-driven science requires data to drive it. Being able to make accurate and precise measurement of biomaterials in the body means that medical assessments can be more accurate. There are differences between how blood absorbs and how it reflects light. The Mayo Clinic's Double-Integrating Sphere Spectrophotometer (MDISS) is an automated measurement device that detects both scattered and direct energy as it passes through a sample in a holder. It can make over 1,200 evenly spaced color measurements from the very deep purple (300-nm) through the visible light spectrum into the near infrared (2"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.08763","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2212.08763/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":"2026-07-05T05:30:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9boTS3qdF3+FZrar7oIC2PeUxeVB5+4dtNH4KAnWb3/FPdKtl3eNbrzKBywQn4Ct1DGH0pL/5dhBUqHxepUzDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:48:43.767034Z"},"content_sha256":"fc99738bc99d858cc2ccbe44c02df83803625186efc36def6a09fe9e89403f71","schema_version":"1.0","event_id":"sha256:fc99738bc99d858cc2ccbe44c02df83803625186efc36def6a09fe9e89403f71"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/bundle.json","state_url":"https://pith.science/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/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":"2026-07-06T15:48:43Z","links":{"resolver":"https://pith.science/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4","bundle":"https://pith.science/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/bundle.json","state":"https://pith.science/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PLRUGSEFT3REDIZJ6LYMTRJIX4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:PLRUGSEFT3REDIZJ6LYMTRJIX4","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":"d360a5e1c2dbcf46e7e83d118b5724c9b6e9822c0524897690678406154a8896","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2022-12-17T00:19:18Z","title_canon_sha256":"7ffac036670fd1f12d77ae01ae28cdde8754b7d971d5fdca4facc07d5b8b46d1"},"schema_version":"1.0","source":{"id":"2212.08763","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.08763","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"arxiv_version","alias_value":"2212.08763v2","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.08763","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_12","alias_value":"PLRUGSEFT3RE","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_16","alias_value":"PLRUGSEFT3REDIZJ","created_at":"2026-07-05T05:30:33Z"},{"alias_kind":"pith_short_8","alias_value":"PLRUGSEF","created_at":"2026-07-05T05:30:33Z"}],"graph_snapshots":[{"event_id":"sha256:fc99738bc99d858cc2ccbe44c02df83803625186efc36def6a09fe9e89403f71","target":"graph","created_at":"2026-07-05T05:30:33Z","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/2212.08763/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Data-driven science requires data to drive it. Being able to make accurate and precise measurement of biomaterials in the body means that medical assessments can be more accurate. There are differences between how blood absorbs and how it reflects light. The Mayo Clinic's Double-Integrating Sphere Spectrophotometer (MDISS) is an automated measurement device that detects both scattered and direct energy as it passes through a sample in a holder. It can make over 1,200 evenly spaced color measurements from the very deep purple (300-nm) through the visible light spectrum into the near infrared (2","authors_text":"Barry K. Gilbert, Clifton R. Haider, Daniel J. Schwab, Gary S. Delp, Stefan K. Grebe","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2022-12-17T00:19:18Z","title":"An Experimental Double-Integrating Sphere Spectrophotometer for In Vitro Optical Analysis of Blood and Tissue Samples, Including Examples of Analyte Measurement Results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.08763","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":"sha256:1f3c0f6f1efc408c8d8f4c70562e3a852f0d431627980c8ac7712ce618f92fa2","target":"record","created_at":"2026-07-05T05:30:33Z","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":"d360a5e1c2dbcf46e7e83d118b5724c9b6e9822c0524897690678406154a8896","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2022-12-17T00:19:18Z","title_canon_sha256":"7ffac036670fd1f12d77ae01ae28cdde8754b7d971d5fdca4facc07d5b8b46d1"},"schema_version":"1.0","source":{"id":"2212.08763","kind":"arxiv","version":2}},"canonical_sha256":"7ae34348859ee241a329f2f0c9c528bf1dac9f5016e96103248798d2cef5158f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ae34348859ee241a329f2f0c9c528bf1dac9f5016e96103248798d2cef5158f","first_computed_at":"2026-07-05T05:30:33.672102Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:30:33.672102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O8umTNyy/+58OC9eBt5iM1aRgyFPDkGNKo9jTnjbI5Px4u5erAb/PVx6GSdLBV4CzHh7U79tM47hDwmyFU7qDg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:30:33.672557Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.08763","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f3c0f6f1efc408c8d8f4c70562e3a852f0d431627980c8ac7712ce618f92fa2","sha256:fc99738bc99d858cc2ccbe44c02df83803625186efc36def6a09fe9e89403f71"],"state_sha256":"123dea93a769107386e2f92bf676459390e0c1a646e26b62ac37c2dac1dfba2e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xq1AiBbKYyRVYfc3iWUm371HP9P40BKGpugTjXwZo9BUAELf48hZh4CGPSq9OSdHbiEzOMu63Bl/ZsDxKzLFBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T15:48:43.768962Z","bundle_sha256":"d9d6e397881328b0ab2d4d41d52242bc91494d6f12f6d74c1c935bf3c0f4db2e"}}