{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TUI66GZNC6F4MR6ATDY5XPQE3V","short_pith_number":"pith:TUI66GZN","canonical_record":{"source":{"id":"1505.00530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2015-05-04T06:20:22Z","cross_cats_sorted":[],"title_canon_sha256":"463d8045aa178ba120a151507e92d6f3feb4b4bb41ce8f9ac9d46b1abee20f6c","abstract_canon_sha256":"ec0b7546cab7edc42910cb24da5cc65eb168c88149a4dc5ae9ea3c59a17f5159"},"schema_version":"1.0"},"canonical_sha256":"9d11ef1b2d178bc647c098f1dbbe04dd6fb93d911d9ab6a44316f2c22e5c6048","source":{"kind":"arxiv","id":"1505.00530","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00530","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00530v1","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00530","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"pith_short_12","alias_value":"TUI66GZNC6F4","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TUI66GZNC6F4MR6A","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TUI66GZN","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TUI66GZNC6F4MR6ATDY5XPQE3V","target":"record","payload":{"canonical_record":{"source":{"id":"1505.00530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2015-05-04T06:20:22Z","cross_cats_sorted":[],"title_canon_sha256":"463d8045aa178ba120a151507e92d6f3feb4b4bb41ce8f9ac9d46b1abee20f6c","abstract_canon_sha256":"ec0b7546cab7edc42910cb24da5cc65eb168c88149a4dc5ae9ea3c59a17f5159"},"schema_version":"1.0"},"canonical_sha256":"9d11ef1b2d178bc647c098f1dbbe04dd6fb93d911d9ab6a44316f2c22e5c6048","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:02.683521Z","signature_b64":"pUnYfBOoihIyGtQvAZCnIum1mQd9AYLDj8MSAfSV85nPyjeRJhnZI1cWiRtL+q9fc57v4A4J+ok+xL3Fp3OKCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d11ef1b2d178bc647c098f1dbbe04dd6fb93d911d9ab6a44316f2c22e5c6048","last_reissued_at":"2026-05-18T02:17:02.682993Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:02.682993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.00530","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":"2026-05-18T02:17:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q7IDE1KgQ3ssr3Z6xT4jF/xmnu7uTIVPzsrRaM4+6EKuARDS/tgZddFy6PbBGFz+RmrEPWfMpyDmyxj+eLJOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T00:13:58.651907Z"},"content_sha256":"19ce7a5d1401415adea8359a6e8a952594439376dfa8e7e2d862119b47214365","schema_version":"1.0","event_id":"sha256:19ce7a5d1401415adea8359a6e8a952594439376dfa8e7e2d862119b47214365"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TUI66GZNC6F4MR6ATDY5XPQE3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Model selection for radiochromic film dosimetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Ignasi M\\'endez","submitted_at":"2015-05-04T06:20:22Z","abstract_excerpt":"The purpose of this study was to find the most accurate model for radiochromic film dosimetry by comparing different channel independent perturbation models. A model selection approach based on (algorithmic) information theory was followed, and the results were validated using gamma-index analysis on a set of benchmark test cases. Several questions were addressed: (a) whether incorporating the information of the non-irradiated film, by scanning prior to irradiation, improves the results; (b) whether lateral corrections are necessary when using multichannel models; (c) whether multichannel dosi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00530","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":"2026-05-18T02:17:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"74KoEIrzLZ6FUJTuc3z7sr2V4qX1CogpBnN+oO0uPYcuCXeI741x9LIlMx1lavUl4eU+7HKP3r/JtWkojGTbAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T00:13:58.652252Z"},"content_sha256":"260efbd9c825706b9db8fa58520209ebbd37d70e5cc1b047486d81de0596a57f","schema_version":"1.0","event_id":"sha256:260efbd9c825706b9db8fa58520209ebbd37d70e5cc1b047486d81de0596a57f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/bundle.json","state_url":"https://pith.science/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/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":"2026-07-01T00:13:58Z","links":{"resolver":"https://pith.science/pith/TUI66GZNC6F4MR6ATDY5XPQE3V","bundle":"https://pith.science/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/bundle.json","state":"https://pith.science/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TUI66GZNC6F4MR6ATDY5XPQE3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TUI66GZNC6F4MR6ATDY5XPQE3V","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":"ec0b7546cab7edc42910cb24da5cc65eb168c88149a4dc5ae9ea3c59a17f5159","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2015-05-04T06:20:22Z","title_canon_sha256":"463d8045aa178ba120a151507e92d6f3feb4b4bb41ce8f9ac9d46b1abee20f6c"},"schema_version":"1.0","source":{"id":"1505.00530","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00530","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00530v1","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00530","created_at":"2026-05-18T02:17:02Z"},{"alias_kind":"pith_short_12","alias_value":"TUI66GZNC6F4","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TUI66GZNC6F4MR6A","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TUI66GZN","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:260efbd9c825706b9db8fa58520209ebbd37d70e5cc1b047486d81de0596a57f","target":"graph","created_at":"2026-05-18T02:17:02Z","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":"The purpose of this study was to find the most accurate model for radiochromic film dosimetry by comparing different channel independent perturbation models. A model selection approach based on (algorithmic) information theory was followed, and the results were validated using gamma-index analysis on a set of benchmark test cases. Several questions were addressed: (a) whether incorporating the information of the non-irradiated film, by scanning prior to irradiation, improves the results; (b) whether lateral corrections are necessary when using multichannel models; (c) whether multichannel dosi","authors_text":"Ignasi M\\'endez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2015-05-04T06:20:22Z","title":"Model selection for radiochromic film dosimetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00530","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":"sha256:19ce7a5d1401415adea8359a6e8a952594439376dfa8e7e2d862119b47214365","target":"record","created_at":"2026-05-18T02:17:02Z","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":"ec0b7546cab7edc42910cb24da5cc65eb168c88149a4dc5ae9ea3c59a17f5159","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2015-05-04T06:20:22Z","title_canon_sha256":"463d8045aa178ba120a151507e92d6f3feb4b4bb41ce8f9ac9d46b1abee20f6c"},"schema_version":"1.0","source":{"id":"1505.00530","kind":"arxiv","version":1}},"canonical_sha256":"9d11ef1b2d178bc647c098f1dbbe04dd6fb93d911d9ab6a44316f2c22e5c6048","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d11ef1b2d178bc647c098f1dbbe04dd6fb93d911d9ab6a44316f2c22e5c6048","first_computed_at":"2026-05-18T02:17:02.682993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:02.682993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pUnYfBOoihIyGtQvAZCnIum1mQd9AYLDj8MSAfSV85nPyjeRJhnZI1cWiRtL+q9fc57v4A4J+ok+xL3Fp3OKCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:02.683521Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.00530","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19ce7a5d1401415adea8359a6e8a952594439376dfa8e7e2d862119b47214365","sha256:260efbd9c825706b9db8fa58520209ebbd37d70e5cc1b047486d81de0596a57f"],"state_sha256":"ed3a66a0751034b366b9c246a2e53c1b5958a28cbcc89dc4e93956feff819ba2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d1qAd6ZSRysM9utSyFlSH+XMrgFj2ILOen5G3MMUNbQW5NUIRCqpRHzMveI4SSZiKIElfdO8tBSyZoMrMpqqBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T00:13:58.654170Z","bundle_sha256":"b0639617fa5382b8118f22f23e51caab466c8682253ec58a82fadc03aa41c749"}}