{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:KOJQ24GCARNXD5JTYFU4DAX25C","short_pith_number":"pith:KOJQ24GC","canonical_record":{"source":{"id":"2304.14411","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-04-15T09:48:25Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"5748f9e642e7cc7ee731acbcf1663a3ba15d36789eefb589f3d9065c681cbf58","abstract_canon_sha256":"9db1bf4e509d2870532d478df3bcf9d30eef09fd2ae393d80160b306dc60be69"},"schema_version":"1.0"},"canonical_sha256":"53930d70c2045b71f533c169c182fae893bbc2e5ea6400b9d9072ad3108edc2e","source":{"kind":"arxiv","id":"2304.14411","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.14411","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2304.14411v1","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.14411","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"KOJQ24GCARNX","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"KOJQ24GCARNXD5JT","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"KOJQ24GC","created_at":"2026-07-05T06:05:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:KOJQ24GCARNXD5JTYFU4DAX25C","target":"record","payload":{"canonical_record":{"source":{"id":"2304.14411","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-04-15T09:48:25Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"5748f9e642e7cc7ee731acbcf1663a3ba15d36789eefb589f3d9065c681cbf58","abstract_canon_sha256":"9db1bf4e509d2870532d478df3bcf9d30eef09fd2ae393d80160b306dc60be69"},"schema_version":"1.0"},"canonical_sha256":"53930d70c2045b71f533c169c182fae893bbc2e5ea6400b9d9072ad3108edc2e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:05:04.626754Z","signature_b64":"WzC+vjQx72Goe2aYIIYmPqRr2EeJpgJfCF1J2jvPzjgB+3oCxxhnlhhDCZA1M4gGVnZbyTeBYdOOLAwmcDVqCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53930d70c2045b71f533c169c182fae893bbc2e5ea6400b9d9072ad3108edc2e","last_reissued_at":"2026-07-05T06:05:04.626382Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:05:04.626382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.14411","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":"2026-07-05T06:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VzBPrHF69KmVBU8e03NBd9cIZHUpbhbpOcT/Ac33jDQAB3X5p8qR4+MbrOqw6xFJIOePCqoBeperAy70FDhmDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:14:36.093222Z"},"content_sha256":"dc8f16ded5af237998c75ce1639528fb40038f701c7f4f011844c53079e9eefb","schema_version":"1.0","event_id":"sha256:dc8f16ded5af237998c75ce1639528fb40038f701c7f4f011844c53079e9eefb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:KOJQ24GCARNXD5JTYFU4DAX25C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classifier for centrality determination with Zero Degree Calorimeter at the Cooling-Storage-Ring External-target Experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"Biao Zhang, Hua Pei, Li-Ke Liu, Nu Xu, Shusu Shi, Yaping Wang","submitted_at":"2023-04-15T09:48:25Z","abstract_excerpt":"The Zero Degree Calorimeter (ZDC) plays a crucial role in determining centrality at the Cooling-Storage-Ring External-target Experiment (CEE) in the Heavy Ion Research Facility in Lanzhou (HIRFL). A Boosted Decision Trees (BDT) multi-classification algorithm is employed to classify the centrality of the collision events based on the raw features from ZDC such as the number of fired channels and deposited energy. The data from simulated $\\rm ^{238}U$ + $\\rm ^{238}U$ collisions at 500 $\\rm MeV/u$, generated by the IQMD event generator and subsequently modeled through the GEANT4 package, is emplo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.14411","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/2304.14411/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":"2026-07-05T06:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oxKyFbOrTrHBaQ0RnyKvM5FEMfWWGl5tOfrGBl37s72tN9eFRH/EUjbJN9M/R/3EhXWOtthRnApTh8vG+qYFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:14:36.093748Z"},"content_sha256":"abec8e8e415be3bb860ecb9babdcf157e3a015649f3a28369831cbfe2c7ef874","schema_version":"1.0","event_id":"sha256:abec8e8e415be3bb860ecb9babdcf157e3a015649f3a28369831cbfe2c7ef874"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KOJQ24GCARNXD5JTYFU4DAX25C/bundle.json","state_url":"https://pith.science/pith/KOJQ24GCARNXD5JTYFU4DAX25C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KOJQ24GCARNXD5JTYFU4DAX25C/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":"2026-08-07T10:14:36Z","links":{"resolver":"https://pith.science/pith/KOJQ24GCARNXD5JTYFU4DAX25C","bundle":"https://pith.science/pith/KOJQ24GCARNXD5JTYFU4DAX25C/bundle.json","state":"https://pith.science/pith/KOJQ24GCARNXD5JTYFU4DAX25C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KOJQ24GCARNXD5JTYFU4DAX25C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:KOJQ24GCARNXD5JTYFU4DAX25C","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":"9db1bf4e509d2870532d478df3bcf9d30eef09fd2ae393d80160b306dc60be69","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-04-15T09:48:25Z","title_canon_sha256":"5748f9e642e7cc7ee731acbcf1663a3ba15d36789eefb589f3d9065c681cbf58"},"schema_version":"1.0","source":{"id":"2304.14411","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.14411","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2304.14411v1","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.14411","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"KOJQ24GCARNX","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"KOJQ24GCARNXD5JT","created_at":"2026-07-05T06:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"KOJQ24GC","created_at":"2026-07-05T06:05:04Z"}],"graph_snapshots":[{"event_id":"sha256:abec8e8e415be3bb860ecb9babdcf157e3a015649f3a28369831cbfe2c7ef874","target":"graph","created_at":"2026-07-05T06:05:04Z","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/2304.14411/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Zero Degree Calorimeter (ZDC) plays a crucial role in determining centrality at the Cooling-Storage-Ring External-target Experiment (CEE) in the Heavy Ion Research Facility in Lanzhou (HIRFL). A Boosted Decision Trees (BDT) multi-classification algorithm is employed to classify the centrality of the collision events based on the raw features from ZDC such as the number of fired channels and deposited energy. The data from simulated $\\rm ^{238}U$ + $\\rm ^{238}U$ collisions at 500 $\\rm MeV/u$, generated by the IQMD event generator and subsequently modeled through the GEANT4 package, is emplo","authors_text":"Biao Zhang, Hua Pei, Li-Ke Liu, Nu Xu, Shusu Shi, Yaping Wang","cross_cats":["nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-04-15T09:48:25Z","title":"Classifier for centrality determination with Zero Degree Calorimeter at the Cooling-Storage-Ring External-target Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.14411","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:dc8f16ded5af237998c75ce1639528fb40038f701c7f4f011844c53079e9eefb","target":"record","created_at":"2026-07-05T06:05:04Z","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":"9db1bf4e509d2870532d478df3bcf9d30eef09fd2ae393d80160b306dc60be69","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-04-15T09:48:25Z","title_canon_sha256":"5748f9e642e7cc7ee731acbcf1663a3ba15d36789eefb589f3d9065c681cbf58"},"schema_version":"1.0","source":{"id":"2304.14411","kind":"arxiv","version":1}},"canonical_sha256":"53930d70c2045b71f533c169c182fae893bbc2e5ea6400b9d9072ad3108edc2e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53930d70c2045b71f533c169c182fae893bbc2e5ea6400b9d9072ad3108edc2e","first_computed_at":"2026-07-05T06:05:04.626382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:05:04.626382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WzC+vjQx72Goe2aYIIYmPqRr2EeJpgJfCF1J2jvPzjgB+3oCxxhnlhhDCZA1M4gGVnZbyTeBYdOOLAwmcDVqCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:05:04.626754Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.14411","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc8f16ded5af237998c75ce1639528fb40038f701c7f4f011844c53079e9eefb","sha256:abec8e8e415be3bb860ecb9babdcf157e3a015649f3a28369831cbfe2c7ef874"],"state_sha256":"1b78e3803e76985cecf89bf562e783d7ede8208a01caf030427f8ff4b78b2006"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2OHNXjE1AtCs8GxbH1mFtY3omWPBW4sm2UHRTli+/T2k26o0fDVc9bQ449Q3rnRpDEa6vGf9p1pFbJ3BKs9uDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T10:14:36.098785Z","bundle_sha256":"f10898d864041bf4643c532ee624e8d170f1094ea52630a55832a7963535e059"}}