{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:2F3OLAVVRVXNWFRE6EOCMHNCJR","short_pith_number":"pith:2F3OLAVV","canonical_record":{"source":{"id":"1710.10170","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-26T13:58:23Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"31e17c043ee9349fa484e5a1fadbddd76442f70eef7ef86ba63dd88af281a041","abstract_canon_sha256":"6f44b313f755ba05f46975d5010ed49cd88b1268c7daea82b8176fa2cf93ed99"},"schema_version":"1.0"},"canonical_sha256":"d176e582b58d6edb1624f11c261da24c469120e296774fbb3bb10817cdc5c8da","source":{"kind":"arxiv","id":"1710.10170","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10170","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10170v1","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10170","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"pith_short_12","alias_value":"2F3OLAVVRVXN","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2F3OLAVVRVXNWFRE","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2F3OLAVV","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:2F3OLAVVRVXNWFRE6EOCMHNCJR","target":"record","payload":{"canonical_record":{"source":{"id":"1710.10170","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-26T13:58:23Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"31e17c043ee9349fa484e5a1fadbddd76442f70eef7ef86ba63dd88af281a041","abstract_canon_sha256":"6f44b313f755ba05f46975d5010ed49cd88b1268c7daea82b8176fa2cf93ed99"},"schema_version":"1.0"},"canonical_sha256":"d176e582b58d6edb1624f11c261da24c469120e296774fbb3bb10817cdc5c8da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:54.627730Z","signature_b64":"b62qhSX5UCMzNn4nUfkPtjSmITVv70jdpES4Ey5ZgLgZI1xQxvI7z8RTyDOE/8fFg5lQoAtkipaAQ5pus2iyAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d176e582b58d6edb1624f11c261da24c469120e296774fbb3bb10817cdc5c8da","last_reissued_at":"2026-05-18T00:31:54.627183Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:54.627183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.10170","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":"2026-05-18T00:31:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oo8VLbEV7k3fhwFhbZp1KHpCnkiPFKn2Wl2zBUkkkfDfTWSEabHo+fap/lGiI66jayvDXp407IjLEN038hQlAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:13:43.021306Z"},"content_sha256":"4681ec1f07cc5fcac839ec2e54c9d7bf4d47b2cc281dabed816f0789c9b12058","schema_version":"1.0","event_id":"sha256:4681ec1f07cc5fcac839ec2e54c9d7bf4d47b2cc281dabed816f0789c9b12058"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:2F3OLAVVRVXNWFRE6EOCMHNCJR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comparison and Evaluation of Isotope-Ratio Calculation Schemes for Compound-Specific Chlorine Isotope Analysis Using GC-EI-MS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.ins-det","authors_text":"Caiming Tang, Lianjun Baoc","submitted_at":"2017-10-26T13:58:23Z","abstract_excerpt":"A recent article reported a comparison study concerning compound-specific chlorine isotope analysis (CSIA-Cl) of organochlorines using gas chromatography- isotope ratio mass spectrometry (GC-IRMS) and gas chromatography-quadrupole mass spectrometry (GC-qMS). Comparable precisions between the two instruments were achieved and trueness of the analysis results was confirmed. The CSIA-Cl method using GC-qMS was originally developed by Sakaguchi-S\\\"oder et al.and further improved by several relevant studies,and has been used to evaluate organic contaminant attenuation in the environment. The essent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10170","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":"2026-05-18T00:31:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QXuPE8u62lxbCqxMy6pDBQxnB/cc6btGDvq9XMBQf4m1zy+kAhpMdGpXpssZ4vk8UGEGtwvJqZLOS5k6tGYQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:13:43.021683Z"},"content_sha256":"d4b53191575f99e50bff77563a59e2e1760c1ea6d729965d9ed7397ce32f6b13","schema_version":"1.0","event_id":"sha256:d4b53191575f99e50bff77563a59e2e1760c1ea6d729965d9ed7397ce32f6b13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/bundle.json","state_url":"https://pith.science/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/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":"2026-06-02T16:13:43Z","links":{"resolver":"https://pith.science/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR","bundle":"https://pith.science/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/bundle.json","state":"https://pith.science/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2F3OLAVVRVXNWFRE6EOCMHNCJR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:2F3OLAVVRVXNWFRE6EOCMHNCJR","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":"6f44b313f755ba05f46975d5010ed49cd88b1268c7daea82b8176fa2cf93ed99","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-26T13:58:23Z","title_canon_sha256":"31e17c043ee9349fa484e5a1fadbddd76442f70eef7ef86ba63dd88af281a041"},"schema_version":"1.0","source":{"id":"1710.10170","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10170","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10170v1","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10170","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"pith_short_12","alias_value":"2F3OLAVVRVXN","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2F3OLAVVRVXNWFRE","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2F3OLAVV","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:d4b53191575f99e50bff77563a59e2e1760c1ea6d729965d9ed7397ce32f6b13","target":"graph","created_at":"2026-05-18T00:31:54Z","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":"A recent article reported a comparison study concerning compound-specific chlorine isotope analysis (CSIA-Cl) of organochlorines using gas chromatography- isotope ratio mass spectrometry (GC-IRMS) and gas chromatography-quadrupole mass spectrometry (GC-qMS). Comparable precisions between the two instruments were achieved and trueness of the analysis results was confirmed. The CSIA-Cl method using GC-qMS was originally developed by Sakaguchi-S\\\"oder et al.and further improved by several relevant studies,and has been used to evaluate organic contaminant attenuation in the environment. The essent","authors_text":"Caiming Tang, Lianjun Baoc","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-26T13:58:23Z","title":"Comparison and Evaluation of Isotope-Ratio Calculation Schemes for Compound-Specific Chlorine Isotope Analysis Using GC-EI-MS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10170","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":"sha256:4681ec1f07cc5fcac839ec2e54c9d7bf4d47b2cc281dabed816f0789c9b12058","target":"record","created_at":"2026-05-18T00:31:54Z","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":"6f44b313f755ba05f46975d5010ed49cd88b1268c7daea82b8176fa2cf93ed99","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-26T13:58:23Z","title_canon_sha256":"31e17c043ee9349fa484e5a1fadbddd76442f70eef7ef86ba63dd88af281a041"},"schema_version":"1.0","source":{"id":"1710.10170","kind":"arxiv","version":1}},"canonical_sha256":"d176e582b58d6edb1624f11c261da24c469120e296774fbb3bb10817cdc5c8da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d176e582b58d6edb1624f11c261da24c469120e296774fbb3bb10817cdc5c8da","first_computed_at":"2026-05-18T00:31:54.627183Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:54.627183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b62qhSX5UCMzNn4nUfkPtjSmITVv70jdpES4Ey5ZgLgZI1xQxvI7z8RTyDOE/8fFg5lQoAtkipaAQ5pus2iyAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:54.627730Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.10170","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4681ec1f07cc5fcac839ec2e54c9d7bf4d47b2cc281dabed816f0789c9b12058","sha256:d4b53191575f99e50bff77563a59e2e1760c1ea6d729965d9ed7397ce32f6b13"],"state_sha256":"d36198c785d3bc1f55d4de845a78ff57fcfcd53233d3ccba02d461b2d8b8ab60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3vS2Bbz6zYx1mDwaYkvSPJBeMNfC7+SpGTC3WYDJE9wpMyG8py4iUmYIq3WjOzVARMNLc0L9SjDCEErBDJSXAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:13:43.024227Z","bundle_sha256":"1dc068917e893830017a68dda23ecd39a643bd5eaed05fb6a5f7e2b12362a47d"}}