{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:UWTSD27KSJDPP6RS24DDURLMO4","short_pith_number":"pith:UWTSD27K","canonical_record":{"source":{"id":"0711.3814","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"math.SP","submitted_at":"2007-11-24T04:31:40Z","cross_cats_sorted":[],"title_canon_sha256":"9560133076501facb3581567039c37b87339477109133fe010f19c922333631e","abstract_canon_sha256":"33b2564a4abdbd0c5e17c516ba42aaa1cdbe4ae2b9482b782c424cc66dddcb4f"},"schema_version":"1.0"},"canonical_sha256":"a5a721ebea9246f7fa32d7063a456c7731d31c955ca45247e06b2034d1dd1660","source":{"kind":"arxiv","id":"0711.3814","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.3814","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"arxiv_version","alias_value":"0711.3814v1","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.3814","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_12","alias_value":"UWTSD27KSJDP","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_16","alias_value":"UWTSD27KSJDPP6RS","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_8","alias_value":"UWTSD27K","created_at":"2026-07-04T15:13:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:UWTSD27KSJDPP6RS24DDURLMO4","target":"record","payload":{"canonical_record":{"source":{"id":"0711.3814","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"math.SP","submitted_at":"2007-11-24T04:31:40Z","cross_cats_sorted":[],"title_canon_sha256":"9560133076501facb3581567039c37b87339477109133fe010f19c922333631e","abstract_canon_sha256":"33b2564a4abdbd0c5e17c516ba42aaa1cdbe4ae2b9482b782c424cc66dddcb4f"},"schema_version":"1.0"},"canonical_sha256":"a5a721ebea9246f7fa32d7063a456c7731d31c955ca45247e06b2034d1dd1660","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:13:31.603050Z","signature_b64":"GloFNNndBaKoaf/eLuIAQZkmf0Prps8HGcJ7DrGtu0W/noEsp5LH/xOnW5k2w2/1SJiNQelJ0L7X6VyAL6tLBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5a721ebea9246f7fa32d7063a456c7731d31c955ca45247e06b2034d1dd1660","last_reissued_at":"2026-07-04T15:13:31.602705Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:13:31.602705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0711.3814","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":"2026-07-04T15:13:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RRROcUGRINQ7D6r17t7qnKxEjrkpGgNX9d721+d8yqQnE6mvAIXcyQSJVHaD8qzPG86AruZjje/D6iTZx3eoAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T10:06:07.241497Z"},"content_sha256":"912da67b7092b863cd11bcbaef061410b75183d3bed2a617afd97dd2da4ff439","schema_version":"1.0","event_id":"sha256:912da67b7092b863cd11bcbaef061410b75183d3bed2a617afd97dd2da4ff439"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:UWTSD27KSJDPP6RS24DDURLMO4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Least Squares Fitting of Low-Level Gamma-ray Spectra with B-Spline Basis Functions","license":"","headline":"","cross_cats":[],"primary_cat":"math.SP","authors_text":"A.A. Xu, L.G. Liu, M.H. Zhu, Z. You","submitted_at":"2007-11-24T04:31:40Z","abstract_excerpt":"In this paper, new methods for smoothing gamma-ray spectra measured by NaI detector are derived. Least squares fitting method with B-spline basis functions is used to reduce the influence of statistical fluctuations. The derived procedures are simple and automatic. The results show that this method is better than traditional method with a more complete reduction of staistical fluctuation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.3814","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/0711.3814/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":"2026-07-04T15:13:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UXtRuG8eB/ANAQrOxQLyYSSBcYa8vRi43YW9BBQBe75KVXFJ+FfOLfjmtf3kNSN1KMOkba1F1bBVPvcD2SYdBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T10:06:07.241861Z"},"content_sha256":"1a69cfbccc124cc1703cce08cf4c7379fa5b4394d891b306c6021d967baab586","schema_version":"1.0","event_id":"sha256:1a69cfbccc124cc1703cce08cf4c7379fa5b4394d891b306c6021d967baab586"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UWTSD27KSJDPP6RS24DDURLMO4/bundle.json","state_url":"https://pith.science/pith/UWTSD27KSJDPP6RS24DDURLMO4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UWTSD27KSJDPP6RS24DDURLMO4/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":"2026-07-17T10:06:07Z","links":{"resolver":"https://pith.science/pith/UWTSD27KSJDPP6RS24DDURLMO4","bundle":"https://pith.science/pith/UWTSD27KSJDPP6RS24DDURLMO4/bundle.json","state":"https://pith.science/pith/UWTSD27KSJDPP6RS24DDURLMO4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UWTSD27KSJDPP6RS24DDURLMO4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:UWTSD27KSJDPP6RS24DDURLMO4","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":"33b2564a4abdbd0c5e17c516ba42aaa1cdbe4ae2b9482b782c424cc66dddcb4f","cross_cats_sorted":[],"license":"","primary_cat":"math.SP","submitted_at":"2007-11-24T04:31:40Z","title_canon_sha256":"9560133076501facb3581567039c37b87339477109133fe010f19c922333631e"},"schema_version":"1.0","source":{"id":"0711.3814","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.3814","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"arxiv_version","alias_value":"0711.3814v1","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.3814","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_12","alias_value":"UWTSD27KSJDP","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_16","alias_value":"UWTSD27KSJDPP6RS","created_at":"2026-07-04T15:13:31Z"},{"alias_kind":"pith_short_8","alias_value":"UWTSD27K","created_at":"2026-07-04T15:13:31Z"}],"graph_snapshots":[{"event_id":"sha256:1a69cfbccc124cc1703cce08cf4c7379fa5b4394d891b306c6021d967baab586","target":"graph","created_at":"2026-07-04T15:13:31Z","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/0711.3814/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, new methods for smoothing gamma-ray spectra measured by NaI detector are derived. Least squares fitting method with B-spline basis functions is used to reduce the influence of statistical fluctuations. The derived procedures are simple and automatic. The results show that this method is better than traditional method with a more complete reduction of staistical fluctuation.","authors_text":"A.A. Xu, L.G. Liu, M.H. Zhu, Z. You","cross_cats":[],"headline":"","license":"","primary_cat":"math.SP","submitted_at":"2007-11-24T04:31:40Z","title":"Least Squares Fitting of Low-Level Gamma-ray Spectra with B-Spline Basis Functions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.3814","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":"sha256:912da67b7092b863cd11bcbaef061410b75183d3bed2a617afd97dd2da4ff439","target":"record","created_at":"2026-07-04T15:13:31Z","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":"33b2564a4abdbd0c5e17c516ba42aaa1cdbe4ae2b9482b782c424cc66dddcb4f","cross_cats_sorted":[],"license":"","primary_cat":"math.SP","submitted_at":"2007-11-24T04:31:40Z","title_canon_sha256":"9560133076501facb3581567039c37b87339477109133fe010f19c922333631e"},"schema_version":"1.0","source":{"id":"0711.3814","kind":"arxiv","version":1}},"canonical_sha256":"a5a721ebea9246f7fa32d7063a456c7731d31c955ca45247e06b2034d1dd1660","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5a721ebea9246f7fa32d7063a456c7731d31c955ca45247e06b2034d1dd1660","first_computed_at":"2026-07-04T15:13:31.602705Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:13:31.602705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GloFNNndBaKoaf/eLuIAQZkmf0Prps8HGcJ7DrGtu0W/noEsp5LH/xOnW5k2w2/1SJiNQelJ0L7X6VyAL6tLBw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:13:31.603050Z","signed_message":"canonical_sha256_bytes"},"source_id":"0711.3814","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:912da67b7092b863cd11bcbaef061410b75183d3bed2a617afd97dd2da4ff439","sha256:1a69cfbccc124cc1703cce08cf4c7379fa5b4394d891b306c6021d967baab586"],"state_sha256":"6eecd55be58239053e502492e6f6dbf4bd0f7e6d700ff1d5a1d8d38bdd18e24f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iL4dlAuhvMLRk2eogNuqJ1Cbdo/zkCc+bj7LQ3unuxcaTV639gOC6z7PXxdW0CH/Sw2E7eHkScDFAgWylbu/Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T10:06:07.243813Z","bundle_sha256":"5babe5211d253ff1e8971f5f8014831d10235ff723622c5cf0e0ebc35252f452"}}