{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:5HND35ZIWGVHT7WAH5V2PIKF6F","short_pith_number":"pith:5HND35ZI","canonical_record":{"source":{"id":"2608.02889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-08-03T21:19:58Z","cross_cats_sorted":["physics.app-ph","physics.optics"],"title_canon_sha256":"698cd78eb046bcffc3621582a5c97a6a4999812ceca4a20ba04899428213eb7d","abstract_canon_sha256":"f656adf6318d7481e7c8980510743c66d1d30b6e97e3b931bfb0132a8940bb33"},"schema_version":"1.0"},"canonical_sha256":"e9da3df728b1aa79fec03f6ba7a145f1403873b3f5681e8151fa269f938ac21f","source":{"kind":"arxiv","id":"2608.02889","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.02889","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"arxiv_version","alias_value":"2608.02889v1","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.02889","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_12","alias_value":"5HND35ZIWGVH","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_16","alias_value":"5HND35ZIWGVHT7WA","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_8","alias_value":"5HND35ZI","created_at":"2026-08-05T00:43:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:5HND35ZIWGVHT7WAH5V2PIKF6F","target":"record","payload":{"canonical_record":{"source":{"id":"2608.02889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-08-03T21:19:58Z","cross_cats_sorted":["physics.app-ph","physics.optics"],"title_canon_sha256":"698cd78eb046bcffc3621582a5c97a6a4999812ceca4a20ba04899428213eb7d","abstract_canon_sha256":"f656adf6318d7481e7c8980510743c66d1d30b6e97e3b931bfb0132a8940bb33"},"schema_version":"1.0"},"canonical_sha256":"e9da3df728b1aa79fec03f6ba7a145f1403873b3f5681e8151fa269f938ac21f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T00:43:15.617537Z","signature_b64":"P8sXGzYfyq8V5wT+UhijYfnO2/m8UZKs7OcLI0wb3EAv3izVI+86MOH2HQ8mtkGTsPWFqYrTRNEwpuNzP3mjAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9da3df728b1aa79fec03f6ba7a145f1403873b3f5681e8151fa269f938ac21f","last_reissued_at":"2026-08-05T00:43:15.615151Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T00:43:15.615151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.02889","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":"2026-08-05T00:43:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tldw7+UmXnJr8QwhVJCLYBdALFRnTPqCKpcp+XDttE0lfvZDL1B5cN2YlIIWAjkWrrFp6OvHRHg/sOZXybgVCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T04:52:44.961350Z"},"content_sha256":"9bea77386f92443dc4a4edd99c14013f31ae8e26a2815155097dfc5186bd361d","schema_version":"1.0","event_id":"sha256:9bea77386f92443dc4a4edd99c14013f31ae8e26a2815155097dfc5186bd361d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:5HND35ZIWGVHT7WAH5V2PIKF6F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-time tissue-equivalent measurement of individual clinical radiotherapy pulses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph","physics.optics"],"primary_cat":"physics.med-ph","authors_text":"Fernanda C. Rodrigues-Machado, Jack C. Sankey, Jingyi Bian, Katherine Szabo, Lilian Childress, Shirin A. Enger, Simon Bernard, Tanner Connell","submitted_at":"2026-08-03T21:19:58Z","abstract_excerpt":"We apply the precision tools of cavity-enhanced absorption sensing to clinical oncology, demonstrating a dosimeter paradigm in which a centimeter-scale volume of water serves as a tissue-equivalent sensing medium. Our proof-of-concept, all-optical scheme achieves real-time readout of clinical radiation pulses with a nominal single-pulse resolution of 90 $\\mu$Gy. This demonstration paves the way toward fiber-integrated, micron-scale devices for $\\textit{in situ}$ universal absolute dosimetry during treatment."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.02889","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/2608.02889/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":"2026-08-05T00:43:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jlQ9g04/sYFRpmrtLzr5phDEVBlL6kyj0YUdgvGvQVIIAR3WBrF/7iMQ8fvSrF9GT+7xHvxf7PzL+8mIvIoGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T04:52:44.961858Z"},"content_sha256":"45b4499ad1497552990833e492a8caf3a8c31081cd5f3cf4492f12c0114d6019","schema_version":"1.0","event_id":"sha256:45b4499ad1497552990833e492a8caf3a8c31081cd5f3cf4492f12c0114d6019"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/bundle.json","state_url":"https://pith.science/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/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":"2026-08-23T04:52:44Z","links":{"resolver":"https://pith.science/pith/5HND35ZIWGVHT7WAH5V2PIKF6F","bundle":"https://pith.science/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/bundle.json","state":"https://pith.science/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5HND35ZIWGVHT7WAH5V2PIKF6F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:5HND35ZIWGVHT7WAH5V2PIKF6F","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":"f656adf6318d7481e7c8980510743c66d1d30b6e97e3b931bfb0132a8940bb33","cross_cats_sorted":["physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-08-03T21:19:58Z","title_canon_sha256":"698cd78eb046bcffc3621582a5c97a6a4999812ceca4a20ba04899428213eb7d"},"schema_version":"1.0","source":{"id":"2608.02889","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.02889","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"arxiv_version","alias_value":"2608.02889v1","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.02889","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_12","alias_value":"5HND35ZIWGVH","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_16","alias_value":"5HND35ZIWGVHT7WA","created_at":"2026-08-05T00:43:15Z"},{"alias_kind":"pith_short_8","alias_value":"5HND35ZI","created_at":"2026-08-05T00:43:15Z"}],"graph_snapshots":[{"event_id":"sha256:45b4499ad1497552990833e492a8caf3a8c31081cd5f3cf4492f12c0114d6019","target":"graph","created_at":"2026-08-05T00:43:15Z","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/2608.02889/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We apply the precision tools of cavity-enhanced absorption sensing to clinical oncology, demonstrating a dosimeter paradigm in which a centimeter-scale volume of water serves as a tissue-equivalent sensing medium. Our proof-of-concept, all-optical scheme achieves real-time readout of clinical radiation pulses with a nominal single-pulse resolution of 90 $\\mu$Gy. This demonstration paves the way toward fiber-integrated, micron-scale devices for $\\textit{in situ}$ universal absolute dosimetry during treatment.","authors_text":"Fernanda C. Rodrigues-Machado, Jack C. Sankey, Jingyi Bian, Katherine Szabo, Lilian Childress, Shirin A. Enger, Simon Bernard, Tanner Connell","cross_cats":["physics.app-ph","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-08-03T21:19:58Z","title":"Real-time tissue-equivalent measurement of individual clinical radiotherapy pulses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.02889","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":"sha256:9bea77386f92443dc4a4edd99c14013f31ae8e26a2815155097dfc5186bd361d","target":"record","created_at":"2026-08-05T00:43:15Z","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":"f656adf6318d7481e7c8980510743c66d1d30b6e97e3b931bfb0132a8940bb33","cross_cats_sorted":["physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2026-08-03T21:19:58Z","title_canon_sha256":"698cd78eb046bcffc3621582a5c97a6a4999812ceca4a20ba04899428213eb7d"},"schema_version":"1.0","source":{"id":"2608.02889","kind":"arxiv","version":1}},"canonical_sha256":"e9da3df728b1aa79fec03f6ba7a145f1403873b3f5681e8151fa269f938ac21f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9da3df728b1aa79fec03f6ba7a145f1403873b3f5681e8151fa269f938ac21f","first_computed_at":"2026-08-05T00:43:15.615151Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T00:43:15.615151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P8sXGzYfyq8V5wT+UhijYfnO2/m8UZKs7OcLI0wb3EAv3izVI+86MOH2HQ8mtkGTsPWFqYrTRNEwpuNzP3mjAw==","signature_status":"signed_v1","signed_at":"2026-08-05T00:43:15.617537Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.02889","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9bea77386f92443dc4a4edd99c14013f31ae8e26a2815155097dfc5186bd361d","sha256:45b4499ad1497552990833e492a8caf3a8c31081cd5f3cf4492f12c0114d6019"],"state_sha256":"6976debf1669997376416a7dfd916cb4efa132799f514a412fd49e4ae20afa53"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bhMYs/Mb/o7yJAWWwTuK/X2PCEW56DZSWUoT5Nu+/J+J0GDB59vzn5F4KNnqe5a57BHiVFYVHZQt4lSIozrPCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T04:52:44.967893Z","bundle_sha256":"7248cc229defb1dec0dad39254068aa53569c4ad3a64f69342d969c8cf5352eb"}}