{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:RZSKQBNB6ZXPRLCGBIJP3PZHYT","short_pith_number":"pith:RZSKQBNB","canonical_record":{"source":{"id":"2605.29593","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T08:34:29Z","cross_cats_sorted":[],"title_canon_sha256":"946b5bf108cb6a16d1d4cc00f086b42026af83472e006c8bed7a820656493577","abstract_canon_sha256":"cb8ab85f92bc7e2a205ff94c7bb40751b26f04c5e93b751e9d2025566044bd1d"},"schema_version":"1.0"},"canonical_sha256":"8e64a805a1f66ef8ac460a12fdbf27c4d225270a8046fed34bb2fc34dcbbdafc","source":{"kind":"arxiv","id":"2605.29593","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.29593","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"arxiv_version","alias_value":"2605.29593v1","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29593","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_12","alias_value":"RZSKQBNB6ZXP","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_16","alias_value":"RZSKQBNB6ZXPRLCG","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_8","alias_value":"RZSKQBNB","created_at":"2026-05-29T01:05:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:RZSKQBNB6ZXPRLCGBIJP3PZHYT","target":"record","payload":{"canonical_record":{"source":{"id":"2605.29593","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T08:34:29Z","cross_cats_sorted":[],"title_canon_sha256":"946b5bf108cb6a16d1d4cc00f086b42026af83472e006c8bed7a820656493577","abstract_canon_sha256":"cb8ab85f92bc7e2a205ff94c7bb40751b26f04c5e93b751e9d2025566044bd1d"},"schema_version":"1.0"},"canonical_sha256":"8e64a805a1f66ef8ac460a12fdbf27c4d225270a8046fed34bb2fc34dcbbdafc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-29T01:05:49.677121Z","signature_b64":"HL96XE8hR9yXvSUy+KbIYl7bbz0qItywUjn3bHIoLh5P1ovqRlJRNSIimszGq/2V18EDs8EIRXCAPRo9nescDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e64a805a1f66ef8ac460a12fdbf27c4d225270a8046fed34bb2fc34dcbbdafc","last_reissued_at":"2026-05-29T01:05:49.676196Z","signature_status":"signed_v1","first_computed_at":"2026-05-29T01:05:49.676196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.29593","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":"2026-05-29T01:05:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2zBFYBMZ5773rchox+jBx3wCXDZxTIs60fCiu12UgOYp1agZEzxlF5YyK6VGTVFAKmrWWI8zAE6TPDbId/ubCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T19:31:01.307162Z"},"content_sha256":"3cb7af8016aec685f86a9617e18194a01783fc5304db8ff029aafb824c0bfcc9","schema_version":"1.0","event_id":"sha256:3cb7af8016aec685f86a9617e18194a01783fc5304db8ff029aafb824c0bfcc9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:RZSKQBNB6ZXPRLCGBIJP3PZHYT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CT Imaging with Helium and Carbon Ions for Hadron Therapy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"G\\'abor B\\'ir\\'o, G\\'abor Papp, Gergely G\\'abor Barnaf\\\"oldi, Zs\\'ofia J\\'olesz","submitted_at":"2026-05-28T08:34:29Z","abstract_excerpt":"Objective: To perform a comprehensive comparative analysis of proton, helium-ion, and carbon-ion computed tomography (CT) as direct imaging modalities for hadron therapy treatment planning, focusing on Relative Stopping Power (RSP) reconstruction accuracy and patient radiation dose.\n  Approach: High-fidelity Monte Carlo simulations were conducted using the GATE/Geant4 platform to model a standard CTP404 phantom. RSP maps were reconstructed using an iterative Richardson-Lucy deconvolution algorithm. Imaging performance was evaluated by comparing reconstructed RSP values against ground truth dat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29593","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/2605.29593/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":"2026-05-29T01:05:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TsrbPDd6D6fZpPCjDyBZvfeG7FQ0B2Gbyo2EI6y1eXsQM3o7AwfMd5ne0BhYYqZWWaav7XbjYeu45BzmyZ02Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T19:31:01.307557Z"},"content_sha256":"6ed57c506a067512dc015decd8550a314544172fa17bf25d692dd88512dac0b7","schema_version":"1.0","event_id":"sha256:6ed57c506a067512dc015decd8550a314544172fa17bf25d692dd88512dac0b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/bundle.json","state_url":"https://pith.science/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/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":"2026-06-25T19:31:01Z","links":{"resolver":"https://pith.science/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT","bundle":"https://pith.science/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/bundle.json","state":"https://pith.science/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RZSKQBNB6ZXPRLCGBIJP3PZHYT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:RZSKQBNB6ZXPRLCGBIJP3PZHYT","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":"cb8ab85f92bc7e2a205ff94c7bb40751b26f04c5e93b751e9d2025566044bd1d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T08:34:29Z","title_canon_sha256":"946b5bf108cb6a16d1d4cc00f086b42026af83472e006c8bed7a820656493577"},"schema_version":"1.0","source":{"id":"2605.29593","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.29593","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"arxiv_version","alias_value":"2605.29593v1","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29593","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_12","alias_value":"RZSKQBNB6ZXP","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_16","alias_value":"RZSKQBNB6ZXPRLCG","created_at":"2026-05-29T01:05:49Z"},{"alias_kind":"pith_short_8","alias_value":"RZSKQBNB","created_at":"2026-05-29T01:05:49Z"}],"graph_snapshots":[{"event_id":"sha256:6ed57c506a067512dc015decd8550a314544172fa17bf25d692dd88512dac0b7","target":"graph","created_at":"2026-05-29T01:05:49Z","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/2605.29593/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Objective: To perform a comprehensive comparative analysis of proton, helium-ion, and carbon-ion computed tomography (CT) as direct imaging modalities for hadron therapy treatment planning, focusing on Relative Stopping Power (RSP) reconstruction accuracy and patient radiation dose.\n  Approach: High-fidelity Monte Carlo simulations were conducted using the GATE/Geant4 platform to model a standard CTP404 phantom. RSP maps were reconstructed using an iterative Richardson-Lucy deconvolution algorithm. Imaging performance was evaluated by comparing reconstructed RSP values against ground truth dat","authors_text":"G\\'abor B\\'ir\\'o, G\\'abor Papp, Gergely G\\'abor Barnaf\\\"oldi, Zs\\'ofia J\\'olesz","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T08:34:29Z","title":"CT Imaging with Helium and Carbon Ions for Hadron Therapy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29593","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":"sha256:3cb7af8016aec685f86a9617e18194a01783fc5304db8ff029aafb824c0bfcc9","target":"record","created_at":"2026-05-29T01:05:49Z","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":"cb8ab85f92bc7e2a205ff94c7bb40751b26f04c5e93b751e9d2025566044bd1d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.med-ph","submitted_at":"2026-05-28T08:34:29Z","title_canon_sha256":"946b5bf108cb6a16d1d4cc00f086b42026af83472e006c8bed7a820656493577"},"schema_version":"1.0","source":{"id":"2605.29593","kind":"arxiv","version":1}},"canonical_sha256":"8e64a805a1f66ef8ac460a12fdbf27c4d225270a8046fed34bb2fc34dcbbdafc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e64a805a1f66ef8ac460a12fdbf27c4d225270a8046fed34bb2fc34dcbbdafc","first_computed_at":"2026-05-29T01:05:49.676196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-29T01:05:49.676196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HL96XE8hR9yXvSUy+KbIYl7bbz0qItywUjn3bHIoLh5P1ovqRlJRNSIimszGq/2V18EDs8EIRXCAPRo9nescDA==","signature_status":"signed_v1","signed_at":"2026-05-29T01:05:49.677121Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.29593","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3cb7af8016aec685f86a9617e18194a01783fc5304db8ff029aafb824c0bfcc9","sha256:6ed57c506a067512dc015decd8550a314544172fa17bf25d692dd88512dac0b7"],"state_sha256":"d77afc85f890cffaf6d36e4c320e035b87d814af3845d731ca0a37fc6d955cc7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MzxCUTzi/LDpfSlFS5WECXUdVlmOZdjpoe9WumgKXyTVZXCKQzZIP9UnwhbOPAzKjHLVlfmIzzX5CdcRDhoFAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T19:31:01.309571Z","bundle_sha256":"f446c44075060da42a2dd2fa11e3a6367078e945120dde44fb994b00c11287c0"}}