{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:72PZB5PIQ2MXBX4NZFJ6FCQMUD","short_pith_number":"pith:72PZB5PI","canonical_record":{"source":{"id":"2409.18521","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-27T07:57:14Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"0ef472bec9e1acc78c1a942e6ed4f9b42753467d778a6b9ce79247f265258315","abstract_canon_sha256":"08afdeaac969932ee827a4442a68fdc6517ed81baf84bf884ca283431d46bc4e"},"schema_version":"1.0"},"canonical_sha256":"fe9f90f5e8869970df8dc953e28a0ca0d221cdf5730ad30b9ea30caccbdae788","source":{"kind":"arxiv","id":"2409.18521","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.18521","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"arxiv_version","alias_value":"2409.18521v1","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.18521","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_12","alias_value":"72PZB5PIQ2MX","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_16","alias_value":"72PZB5PIQ2MXBX4N","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_8","alias_value":"72PZB5PI","created_at":"2026-07-05T09:12:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:72PZB5PIQ2MXBX4NZFJ6FCQMUD","target":"record","payload":{"canonical_record":{"source":{"id":"2409.18521","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-27T07:57:14Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"0ef472bec9e1acc78c1a942e6ed4f9b42753467d778a6b9ce79247f265258315","abstract_canon_sha256":"08afdeaac969932ee827a4442a68fdc6517ed81baf84bf884ca283431d46bc4e"},"schema_version":"1.0"},"canonical_sha256":"fe9f90f5e8869970df8dc953e28a0ca0d221cdf5730ad30b9ea30caccbdae788","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:12:36.893525Z","signature_b64":"210OpBmuD75dY2g492BjsGCMl5NzVj4UC6Bcw884g23bIvpiWX7foey+1/YSqMSw4Ge5eYDQoi0LhuA28XduAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe9f90f5e8869970df8dc953e28a0ca0d221cdf5730ad30b9ea30caccbdae788","last_reissued_at":"2026-07-05T09:12:36.893021Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:12:36.893021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.18521","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":"2026-07-05T09:12:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FL6K3RgWt9/v4jpgTS8nsenLOzpYj4HpEdFYRJE7L1HHJxMSZRQdfnVaFbSBgnUezfEjnp4tH4M++VX3NgvxDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T13:00:21.080455Z"},"content_sha256":"f6106594273cf31b5681d30c388e82e0b632711f0c3c0cc0295096d7447d627b","schema_version":"1.0","event_id":"sha256:f6106594273cf31b5681d30c388e82e0b632711f0c3c0cc0295096d7447d627b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:72PZB5PIQ2MXBX4NZFJ6FCQMUD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assessing the Dosimetric Effects of High-Z Titanium Implants in Proton Therapy Using Pixel Detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.med-ph","authors_text":"A. Molokanov, C. Balan, C. Granja, C. Oancea, G. Mytsin, S. Shvidky, V. Chis","submitted_at":"2024-09-27T07:57:14Z","abstract_excerpt":"This study experimentally examines the effect and changes in the delivered fields, using water-equivalent phantoms with and without titanium (Ti) dental implants positioned along the primary beam path. We measure in detail the composition and spectral-tracking characterization of particles generated in the entrance region of the Bragg curve using high-spatial resolution, spectral and time-sensitive imaging detectors with a pixelated array provided by the ASIC chip Timepix3. A 170 MeV proton beam was collimated and modulated in a polymethyl methacrylate (PMMA). Placing two dental implants at th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.18521","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/2409.18521/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":"2026-07-05T09:12:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x3K7WyoHacJKxJgqVXwgyQsMLgswf+vUAvSBmzSRPOJUzVRXANKozLv6tOQgKcIfKNcPLoRRhfoUnZ2869l8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T13:00:21.080836Z"},"content_sha256":"2d03220c6e4b2b1cb5017abfbdbd07e6c4670c856a6d1d198695555222f67270","schema_version":"1.0","event_id":"sha256:2d03220c6e4b2b1cb5017abfbdbd07e6c4670c856a6d1d198695555222f67270"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/bundle.json","state_url":"https://pith.science/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/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":"2026-07-14T13:00:21Z","links":{"resolver":"https://pith.science/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD","bundle":"https://pith.science/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/bundle.json","state":"https://pith.science/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/72PZB5PIQ2MXBX4NZFJ6FCQMUD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:72PZB5PIQ2MXBX4NZFJ6FCQMUD","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":"08afdeaac969932ee827a4442a68fdc6517ed81baf84bf884ca283431d46bc4e","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-27T07:57:14Z","title_canon_sha256":"0ef472bec9e1acc78c1a942e6ed4f9b42753467d778a6b9ce79247f265258315"},"schema_version":"1.0","source":{"id":"2409.18521","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.18521","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"arxiv_version","alias_value":"2409.18521v1","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.18521","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_12","alias_value":"72PZB5PIQ2MX","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_16","alias_value":"72PZB5PIQ2MXBX4N","created_at":"2026-07-05T09:12:36Z"},{"alias_kind":"pith_short_8","alias_value":"72PZB5PI","created_at":"2026-07-05T09:12:36Z"}],"graph_snapshots":[{"event_id":"sha256:2d03220c6e4b2b1cb5017abfbdbd07e6c4670c856a6d1d198695555222f67270","target":"graph","created_at":"2026-07-05T09:12:36Z","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/2409.18521/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This study experimentally examines the effect and changes in the delivered fields, using water-equivalent phantoms with and without titanium (Ti) dental implants positioned along the primary beam path. We measure in detail the composition and spectral-tracking characterization of particles generated in the entrance region of the Bragg curve using high-spatial resolution, spectral and time-sensitive imaging detectors with a pixelated array provided by the ASIC chip Timepix3. A 170 MeV proton beam was collimated and modulated in a polymethyl methacrylate (PMMA). Placing two dental implants at th","authors_text":"A. Molokanov, C. Balan, C. Granja, C. Oancea, G. Mytsin, S. Shvidky, V. Chis","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-27T07:57:14Z","title":"Assessing the Dosimetric Effects of High-Z Titanium Implants in Proton Therapy Using Pixel Detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.18521","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:f6106594273cf31b5681d30c388e82e0b632711f0c3c0cc0295096d7447d627b","target":"record","created_at":"2026-07-05T09:12:36Z","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":"08afdeaac969932ee827a4442a68fdc6517ed81baf84bf884ca283431d46bc4e","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-27T07:57:14Z","title_canon_sha256":"0ef472bec9e1acc78c1a942e6ed4f9b42753467d778a6b9ce79247f265258315"},"schema_version":"1.0","source":{"id":"2409.18521","kind":"arxiv","version":1}},"canonical_sha256":"fe9f90f5e8869970df8dc953e28a0ca0d221cdf5730ad30b9ea30caccbdae788","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe9f90f5e8869970df8dc953e28a0ca0d221cdf5730ad30b9ea30caccbdae788","first_computed_at":"2026-07-05T09:12:36.893021Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:12:36.893021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"210OpBmuD75dY2g492BjsGCMl5NzVj4UC6Bcw884g23bIvpiWX7foey+1/YSqMSw4Ge5eYDQoi0LhuA28XduAA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:12:36.893525Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.18521","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6106594273cf31b5681d30c388e82e0b632711f0c3c0cc0295096d7447d627b","sha256:2d03220c6e4b2b1cb5017abfbdbd07e6c4670c856a6d1d198695555222f67270"],"state_sha256":"fba8aef8de6d7a7f6e6773c10711db28c3ea1955bc4b5d9d6e42180db198be03"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aDZ8sGEI0OrlGP6JFxrPIPM2tmMZk4EY1r05kk+eG4hEH1yAmHRRQ0VBsv84fqH2embsW8VSeyHL8hO8tNdJBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-14T13:00:21.083366Z","bundle_sha256":"3b6b1f07e2dca19a538881ff9c60269457b394e784ceea0d4de830cb34f459d4"}}